adding ffmpeg specific version

1 files changed, 4311 insertions, 0 deletions

diff --git a/ffmpeg1/libavcodec/mpegvideo_enc.c b/ffmpeg1/libavcodec/mpegvideo_enc.c
new file mode 100644
index 0000000..dd66943
--- /dev/null
+++ b/ffmpeg1/libavcodec/mpegvideo_enc.c
@@ -0,0 +1,4311 @@
+/*
+ * The simplest mpeg encoder (well, it was the simplest!)
+ * Copyright (c) 2000,2001 Fabrice Bellard
+ * Copyright (c) 2002-2004 Michael Niedermayer <michaelni@gmx.at>
+ *
+ * 4MV & hq & B-frame encoding stuff by Michael Niedermayer <michaelni@gmx.at>
+ *
+ * This file is part of FFmpeg.
+ *
+ * FFmpeg is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * FFmpeg is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with FFmpeg; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+/**
+ * @file
+ * The simplest mpeg encoder (well, it was the simplest!).
+ */
+
+#include "libavutil/internal.h"
+#include "libavutil/intmath.h"
+#include "libavutil/mathematics.h"
+#include "libavutil/pixdesc.h"
+#include "libavutil/opt.h"
+#include "avcodec.h"
+#include "dct.h"
+#include "dsputil.h"
+#include "mpegvideo.h"
+#include "h263.h"
+#include "mathops.h"
+#include "mjpegenc.h"
+#include "msmpeg4.h"
+#include "faandct.h"
+#include "thread.h"
+#include "aandcttab.h"
+#include "flv.h"
+#include "mpeg4video.h"
+#include "internal.h"
+#include "bytestream.h"
+#include <limits.h>
+#include "sp5x.h"
+
+//#undef NDEBUG
+//#include <assert.h>
+
+static int encode_picture(MpegEncContext *s, int picture_number);
+static int dct_quantize_refine(MpegEncContext *s, int16_t *block, int16_t *weight, int16_t *orig, int n, int qscale);
+static int sse_mb(MpegEncContext *s);
+static void denoise_dct_c(MpegEncContext *s, int16_t *block);
+static int dct_quantize_trellis_c(MpegEncContext *s, int16_t *block, int n, int qscale, int *overflow);
+
+//#define DEBUG
+
+static uint8_t default_mv_penalty[MAX_FCODE + 1][MAX_MV * 2 + 1];
+static uint8_t default_fcode_tab[MAX_MV * 2 + 1];
+
+const AVOption ff_mpv_generic_options[] = {
+    FF_MPV_COMMON_OPTS
+    { NULL },
+};
+
+void ff_convert_matrix(DSPContext *dsp, int (*qmat)[64],
+                       uint16_t (*qmat16)[2][64],
+                       const uint16_t *quant_matrix,
+                       int bias, int qmin, int qmax, int intra)
+{
+    int qscale;
+    int shift = 0;
+
+    for (qscale = qmin; qscale <= qmax; qscale++) {
+        int i;
+        if (dsp->fdct == ff_jpeg_fdct_islow_8 ||
+            dsp->fdct == ff_jpeg_fdct_islow_10 ||
+            dsp->fdct == ff_faandct) {
+            for (i = 0; i < 64; i++) {
+                const int j = dsp->idct_permutation[i];
+                /* 16 <= qscale * quant_matrix[i] <= 7905
+                 * Assume x = ff_aanscales[i] * qscale * quant_matrix[i]
+                 *             19952 <=              x  <= 249205026
+                 * (1 << 36) / 19952 >= (1 << 36) / (x) >= (1 << 36) / 249205026
+                 *           3444240 >= (1 << 36) / (x) >= 275 */
+
+                qmat[qscale][i] = (int)((UINT64_C(1) << QMAT_SHIFT) /
+                                        (qscale * quant_matrix[j]));
+            }
+        } else if (dsp->fdct == ff_fdct_ifast) {
+            for (i = 0; i < 64; i++) {
+                const int j = dsp->idct_permutation[i];
+                /* 16 <= qscale * quant_matrix[i] <= 7905
+                 * Assume x = ff_aanscales[i] * qscale * quant_matrix[i]
+                 *             19952 <=              x  <= 249205026
+                 * (1 << 36) / 19952 >= (1 << 36) / (x) >= (1 << 36) / 249205026
+                 *           3444240 >= (1 << 36) / (x) >= 275 */
+
+                qmat[qscale][i] = (int)((UINT64_C(1) << (QMAT_SHIFT + 14)) /
+                                        (ff_aanscales[i] * (int64_t)qscale * quant_matrix[j]));
+            }
+        } else {
+            for (i = 0; i < 64; i++) {
+                const int j = dsp->idct_permutation[i];
+                /* We can safely suppose that 16 <= quant_matrix[i] <= 255
+                 * Assume x = qscale * quant_matrix[i]
+                 * So             16 <=              x  <= 7905
+                 * so (1 << 19) / 16 >= (1 << 19) / (x) >= (1 << 19) / 7905
+                 * so          32768 >= (1 << 19) / (x) >= 67 */
+                qmat[qscale][i] = (int)((UINT64_C(1) << QMAT_SHIFT) /
+                                        (qscale * quant_matrix[j]));
+                //qmat  [qscale][i] = (1 << QMAT_SHIFT_MMX) /
+                //                    (qscale * quant_matrix[i]);
+                qmat16[qscale][0][i] = (1 << QMAT_SHIFT_MMX) /
+                                       (qscale * quant_matrix[j]);
+
+                if (qmat16[qscale][0][i] == 0 ||
+                    qmat16[qscale][0][i] == 128 * 256)
+                    qmat16[qscale][0][i] = 128 * 256 - 1;
+                qmat16[qscale][1][i] =
+                    ROUNDED_DIV(bias << (16 - QUANT_BIAS_SHIFT),
+                                qmat16[qscale][0][i]);
+            }
+        }
+
+        for (i = intra; i < 64; i++) {
+            int64_t max = 8191;
+            if (dsp->fdct == ff_fdct_ifast) {
+                max = (8191LL * ff_aanscales[i]) >> 14;
+            }
+            while (((max * qmat[qscale][i]) >> shift) > INT_MAX) {
+                shift++;
+            }
+        }
+    }
+    if (shift) {
+        av_log(NULL, AV_LOG_INFO,
+               "Warning, QMAT_SHIFT is larger than %d, overflows possible\n",
+               QMAT_SHIFT - shift);
+    }
+}
+
+static inline void update_qscale(MpegEncContext *s)
+{
+    s->qscale = (s->lambda * 139 + FF_LAMBDA_SCALE * 64) >>
+                (FF_LAMBDA_SHIFT + 7);
+    s->qscale = av_clip(s->qscale, s->avctx->qmin, s->avctx->qmax);
+
+    s->lambda2 = (s->lambda * s->lambda + FF_LAMBDA_SCALE / 2) >>
+                 FF_LAMBDA_SHIFT;
+}
+
+void ff_write_quant_matrix(PutBitContext *pb, uint16_t *matrix)
+{
+    int i;
+
+    if (matrix) {
+        put_bits(pb, 1, 1);
+        for (i = 0; i < 64; i++) {
+            put_bits(pb, 8, matrix[ff_zigzag_direct[i]]);
+        }
+    } else
+        put_bits(pb, 1, 0);
+}
+
+/**
+ * init s->current_picture.qscale_table from s->lambda_table
+ */
+void ff_init_qscale_tab(MpegEncContext *s)
+{
+    int8_t * const qscale_table = s->current_picture.qscale_table;
+    int i;
+
+    for (i = 0; i < s->mb_num; i++) {
+        unsigned int lam = s->lambda_table[s->mb_index2xy[i]];
+        int qp = (lam * 139 + FF_LAMBDA_SCALE * 64) >> (FF_LAMBDA_SHIFT + 7);
+        qscale_table[s->mb_index2xy[i]] = av_clip(qp, s->avctx->qmin,
+                                                  s->avctx->qmax);
+    }
+}
+
+static void copy_picture_attributes(MpegEncContext *s, AVFrame *dst,
+                                    const AVFrame *src)
+{
+    dst->pict_type              = src->pict_type;
+    dst->quality                = src->quality;
+    dst->coded_picture_number   = src->coded_picture_number;
+    dst->display_picture_number = src->display_picture_number;
+    //dst->reference              = src->reference;
+    dst->pts                    = src->pts;
+    dst->interlaced_frame       = src->interlaced_frame;
+    dst->top_field_first        = src->top_field_first;
+}
+
+static void update_duplicate_context_after_me(MpegEncContext *dst,
+                                              MpegEncContext *src)
+{
+#define COPY(a) dst->a= src->a
+    COPY(pict_type);
+    COPY(current_picture);
+    COPY(f_code);
+    COPY(b_code);
+    COPY(qscale);
+    COPY(lambda);
+    COPY(lambda2);
+    COPY(picture_in_gop_number);
+    COPY(gop_picture_number);
+    COPY(frame_pred_frame_dct); // FIXME don't set in encode_header
+    COPY(progressive_frame);    // FIXME don't set in encode_header
+    COPY(partitioned_frame);    // FIXME don't set in encode_header
+#undef COPY
+}
+
+/**
+ * Set the given MpegEncContext to defaults for encoding.
+ * the changed fields will not depend upon the prior state of the MpegEncContext.
+ */
+static void MPV_encode_defaults(MpegEncContext *s)
+{
+    int i;
+    ff_MPV_common_defaults(s);
+
+    for (i = -16; i < 16; i++) {
+        default_fcode_tab[i + MAX_MV] = 1;
+    }
+    s->me.mv_penalty = default_mv_penalty;
+    s->fcode_tab     = default_fcode_tab;
+}
+
+av_cold int ff_dct_encode_init(MpegEncContext *s) {
+    if (ARCH_X86)
+        ff_dct_encode_init_x86(s);
+
+    if (!s->dct_quantize)
+        s->dct_quantize = ff_dct_quantize_c;
+    if (!s->denoise_dct)
+        s->denoise_dct  = denoise_dct_c;
+    s->fast_dct_quantize = s->dct_quantize;
+    if (s->avctx->trellis)
+        s->dct_quantize  = dct_quantize_trellis_c;
+
+    return 0;
+}
+
+/* init video encoder */
+av_cold int ff_MPV_encode_init(AVCodecContext *avctx)
+{
+    MpegEncContext *s = avctx->priv_data;
+    int i;
+    int chroma_h_shift, chroma_v_shift;
+
+    MPV_encode_defaults(s);
+
+    switch (avctx->codec_id) {
+    case AV_CODEC_ID_MPEG2VIDEO:
+        if (avctx->pix_fmt != AV_PIX_FMT_YUV420P &&
+            avctx->pix_fmt != AV_PIX_FMT_YUV422P) {
+            av_log(avctx, AV_LOG_ERROR,
+                   "only YUV420 and YUV422 are supported\n");
+            return -1;
+        }
+        break;
+    case AV_CODEC_ID_LJPEG:
+        if (avctx->pix_fmt != AV_PIX_FMT_YUVJ420P &&
+            avctx->pix_fmt != AV_PIX_FMT_YUVJ422P &&
+            avctx->pix_fmt != AV_PIX_FMT_YUVJ444P &&
+            avctx->pix_fmt != AV_PIX_FMT_BGR0     &&
+            avctx->pix_fmt != AV_PIX_FMT_BGRA     &&
+            avctx->pix_fmt != AV_PIX_FMT_BGR24    &&
+            ((avctx->pix_fmt != AV_PIX_FMT_YUV420P &&
+              avctx->pix_fmt != AV_PIX_FMT_YUV422P &&
+              avctx->pix_fmt != AV_PIX_FMT_YUV444P) ||
+             avctx->strict_std_compliance > FF_COMPLIANCE_UNOFFICIAL)) {
+            av_log(avctx, AV_LOG_ERROR, "colorspace not supported in LJPEG\n");
+            return -1;
+        }
+        break;
+    case AV_CODEC_ID_MJPEG:
+    case AV_CODEC_ID_AMV:
+        if (avctx->pix_fmt != AV_PIX_FMT_YUVJ420P &&
+            avctx->pix_fmt != AV_PIX_FMT_YUVJ422P &&
+            avctx->pix_fmt != AV_PIX_FMT_YUVJ444P &&
+            ((avctx->pix_fmt != AV_PIX_FMT_YUV420P &&
+              avctx->pix_fmt != AV_PIX_FMT_YUV422P &&
+              avctx->pix_fmt != AV_PIX_FMT_YUV444P) ||
+             avctx->strict_std_compliance > FF_COMPLIANCE_UNOFFICIAL)) {
+            av_log(avctx, AV_LOG_ERROR, "colorspace not supported in jpeg\n");
+            return -1;
+        }
+        break;
+    default:
+        if (avctx->pix_fmt != AV_PIX_FMT_YUV420P) {
+            av_log(avctx, AV_LOG_ERROR, "only YUV420 is supported\n");
+            return -1;
+        }
+    }
+
+    switch (avctx->pix_fmt) {
+    case AV_PIX_FMT_YUVJ444P:
+    case AV_PIX_FMT_YUV444P:
+        s->chroma_format = CHROMA_444;
+        break;
+    case AV_PIX_FMT_YUVJ422P:
+    case AV_PIX_FMT_YUV422P:
+        s->chroma_format = CHROMA_422;
+        break;
+    case AV_PIX_FMT_YUVJ420P:
+    case AV_PIX_FMT_YUV420P:
+    default:
+        s->chroma_format = CHROMA_420;
+        break;
+    }
+
+    s->bit_rate = avctx->bit_rate;
+    s->width    = avctx->width;
+    s->height   = avctx->height;
+    if (avctx->gop_size > 600 &&
+        avctx->strict_std_compliance > FF_COMPLIANCE_EXPERIMENTAL) {
+        av_log(avctx, AV_LOG_WARNING,
+               "keyframe interval too large!, reducing it from %d to %d\n",
+               avctx->gop_size, 600);
+        avctx->gop_size = 600;
+    }
+    s->gop_size     = avctx->gop_size;
+    s->avctx        = avctx;
+    s->flags        = avctx->flags;
+    s->flags2       = avctx->flags2;
+    s->max_b_frames = avctx->max_b_frames;
+    s->codec_id     = avctx->codec->id;
+    s->strict_std_compliance = avctx->strict_std_compliance;
+    s->quarter_sample     = (avctx->flags & CODEC_FLAG_QPEL) != 0;
+    s->mpeg_quant         = avctx->mpeg_quant;
+    s->rtp_mode           = !!avctx->rtp_payload_size;
+    s->intra_dc_precision = avctx->intra_dc_precision;
+    s->user_specified_pts = AV_NOPTS_VALUE;
+
+    if (s->gop_size <= 1) {
+        s->intra_only = 1;
+        s->gop_size   = 12;
+    } else {
+        s->intra_only = 0;
+    }
+
+    s->me_method = avctx->me_method;
+
+    /* Fixed QSCALE */
+    s->fixed_qscale = !!(avctx->flags & CODEC_FLAG_QSCALE);
+
+    s->adaptive_quant = (s->avctx->lumi_masking ||
+                         s->avctx->dark_masking ||
+                         s->avctx->temporal_cplx_masking ||
+                         s->avctx->spatial_cplx_masking  ||
+                         s->avctx->p_masking      ||
+                         s->avctx->border_masking ||
+                         (s->mpv_flags & FF_MPV_FLAG_QP_RD)) &&
+                        !s->fixed_qscale;
+
+    s->loop_filter      = !!(s->flags & CODEC_FLAG_LOOP_FILTER);
+
+    if (avctx->rc_max_rate && !avctx->rc_buffer_size) {
+        switch(avctx->codec_id) {
+        case AV_CODEC_ID_MPEG1VIDEO:
+        case AV_CODEC_ID_MPEG2VIDEO:
+            avctx->rc_buffer_size = FFMAX(avctx->rc_max_rate, 15000000) * 112L / 15000000 * 16384;
+            break;
+        case AV_CODEC_ID_MPEG4:
+        case AV_CODEC_ID_MSMPEG4V1:
+        case AV_CODEC_ID_MSMPEG4V2:
+        case AV_CODEC_ID_MSMPEG4V3:
+            if       (avctx->rc_max_rate >= 15000000) {
+                avctx->rc_buffer_size = 320 + (avctx->rc_max_rate - 15000000L) * (760-320) / (38400000 - 15000000);
+            } else if(avctx->rc_max_rate >=  2000000) {
+                avctx->rc_buffer_size =  80 + (avctx->rc_max_rate -  2000000L) * (320- 80) / (15000000 -  2000000);
+            } else if(avctx->rc_max_rate >=   384000) {
+                avctx->rc_buffer_size =  40 + (avctx->rc_max_rate -   384000L) * ( 80- 40) / ( 2000000 -   384000);
+            } else
+                avctx->rc_buffer_size = 40;
+            avctx->rc_buffer_size *= 16384;
+            break;
+        }
+        if (avctx->rc_buffer_size) {
+            av_log(avctx, AV_LOG_INFO, "Automatically choosing VBV buffer size of %d kbyte\n", avctx->rc_buffer_size/8192);
+        }
+    }
+
+    if ((!avctx->rc_max_rate) != (!avctx->rc_buffer_size)) {
+        av_log(avctx, AV_LOG_ERROR, "Either both buffer size and max rate or neither must be specified\n");
+        if (avctx->rc_max_rate && !avctx->rc_buffer_size)
+            return -1;
+    }
+
+    if (avctx->rc_min_rate && avctx->rc_max_rate != avctx->rc_min_rate) {
+        av_log(avctx, AV_LOG_INFO,
+               "Warning min_rate > 0 but min_rate != max_rate isn't recommended!\n");
+    }
+
+    if (avctx->rc_min_rate && avctx->rc_min_rate > avctx->bit_rate) {
+        av_log(avctx, AV_LOG_ERROR, "bitrate below min bitrate\n");
+        return -1;
+    }
+
+    if (avctx->rc_max_rate && avctx->rc_max_rate < avctx->bit_rate) {
+        av_log(avctx, AV_LOG_ERROR, "bitrate above max bitrate\n");
+        return -1;
+    }
+
+    if (avctx->rc_max_rate &&
+        avctx->rc_max_rate == avctx->bit_rate &&
+        avctx->rc_max_rate != avctx->rc_min_rate) {
+        av_log(avctx, AV_LOG_INFO,
+               "impossible bitrate constraints, this will fail\n");
+    }
+
+    if (avctx->rc_buffer_size &&
+        avctx->bit_rate * (int64_t)avctx->time_base.num >
+            avctx->rc_buffer_size * (int64_t)avctx->time_base.den) {
+        av_log(avctx, AV_LOG_ERROR, "VBV buffer too small for bitrate\n");
+        return -1;
+    }
+
+    if (!s->fixed_qscale &&
+        avctx->bit_rate * av_q2d(avctx->time_base) >
+            avctx->bit_rate_tolerance) {
+        av_log(avctx, AV_LOG_ERROR,
+               "bitrate tolerance too small for bitrate\n");
+        return -1;
+    }
+
+    if (s->avctx->rc_max_rate &&
+        s->avctx->rc_min_rate == s->avctx->rc_max_rate &&
+        (s->codec_id == AV_CODEC_ID_MPEG1VIDEO ||
+         s->codec_id == AV_CODEC_ID_MPEG2VIDEO) &&
+        90000LL * (avctx->rc_buffer_size - 1) >
+            s->avctx->rc_max_rate * 0xFFFFLL) {
+        av_log(avctx, AV_LOG_INFO,
+               "Warning vbv_delay will be set to 0xFFFF (=VBR) as the "
+               "specified vbv buffer is too large for the given bitrate!\n");
+    }
+
+    if ((s->flags & CODEC_FLAG_4MV)  && s->codec_id != AV_CODEC_ID_MPEG4 &&
+        s->codec_id != AV_CODEC_ID_H263 && s->codec_id != AV_CODEC_ID_H263P &&
+        s->codec_id != AV_CODEC_ID_FLV1) {
+        av_log(avctx, AV_LOG_ERROR, "4MV not supported by codec\n");
+        return -1;
+    }
+
+    if (s->obmc && s->avctx->mb_decision != FF_MB_DECISION_SIMPLE) {
+        av_log(avctx, AV_LOG_ERROR,
+               "OBMC is only supported with simple mb decision\n");
+        return -1;
+    }
+
+    if (s->quarter_sample && s->codec_id != AV_CODEC_ID_MPEG4) {
+        av_log(avctx, AV_LOG_ERROR, "qpel not supported by codec\n");
+        return -1;
+    }
+
+    if (s->max_b_frames                    &&
+        s->codec_id != AV_CODEC_ID_MPEG4      &&
+        s->codec_id != AV_CODEC_ID_MPEG1VIDEO &&
+        s->codec_id != AV_CODEC_ID_MPEG2VIDEO) {
+        av_log(avctx, AV_LOG_ERROR, "b frames not supported by codec\n");
+        return -1;
+    }
+
+    if ((s->codec_id == AV_CODEC_ID_MPEG4 ||
+         s->codec_id == AV_CODEC_ID_H263  ||
+         s->codec_id == AV_CODEC_ID_H263P) &&
+        (avctx->sample_aspect_ratio.num > 255 ||
+         avctx->sample_aspect_ratio.den > 255)) {
+        av_log(avctx, AV_LOG_WARNING,
+               "Invalid pixel aspect ratio %i/%i, limit is 255/255 reducing\n",
+               avctx->sample_aspect_ratio.num, avctx->sample_aspect_ratio.den);
+        av_reduce(&avctx->sample_aspect_ratio.num, &avctx->sample_aspect_ratio.den,
+                   avctx->sample_aspect_ratio.num,  avctx->sample_aspect_ratio.den, 255);
+    }
+
+    if ((s->codec_id == AV_CODEC_ID_H263  ||
+         s->codec_id == AV_CODEC_ID_H263P) &&
+        (avctx->width  > 2048 ||
+         avctx->height > 1152 )) {
+        av_log(avctx, AV_LOG_ERROR, "H.263 does not support resolutions above 2048x1152\n");
+        return -1;
+    }
+    if ((s->codec_id == AV_CODEC_ID_H263  ||
+         s->codec_id == AV_CODEC_ID_H263P) &&
+        ((avctx->width &3) ||
+         (avctx->height&3) )) {
+        av_log(avctx, AV_LOG_ERROR, "w/h must be a multiple of 4\n");
+        return -1;
+    }
+
+    if (s->codec_id == AV_CODEC_ID_MPEG1VIDEO &&
+        (avctx->width  > 4095 ||
+         avctx->height > 4095 )) {
+        av_log(avctx, AV_LOG_ERROR, "MPEG-1 does not support resolutions above 4095x4095\n");
+        return -1;
+    }
+
+    if (s->codec_id == AV_CODEC_ID_MPEG2VIDEO &&
+        (avctx->width  > 16383 ||
+         avctx->height > 16383 )) {
+        av_log(avctx, AV_LOG_ERROR, "MPEG-2 does not support resolutions above 16383x16383\n");
+        return -1;
+    }
+
+    if (s->codec_id == AV_CODEC_ID_RV10 &&
+        (avctx->width &15 ||
+         avctx->height&15 )) {
+        av_log(avctx, AV_LOG_ERROR, "width and height must be a multiple of 16\n");
+        return AVERROR(EINVAL);
+    }
+
+    if (s->codec_id == AV_CODEC_ID_RV20 &&
+        (avctx->width &3 ||
+         avctx->height&3 )) {
+        av_log(avctx, AV_LOG_ERROR, "width and height must be a multiple of 4\n");
+        return AVERROR(EINVAL);
+    }
+
+    if ((s->codec_id == AV_CODEC_ID_WMV1 ||
+         s->codec_id == AV_CODEC_ID_WMV2) &&
+         avctx->width & 1) {
+         av_log(avctx, AV_LOG_ERROR, "width must be multiple of 2\n");
+         return -1;
+    }
+
+    if ((s->flags & (CODEC_FLAG_INTERLACED_DCT | CODEC_FLAG_INTERLACED_ME)) &&
+        s->codec_id != AV_CODEC_ID_MPEG4 && s->codec_id != AV_CODEC_ID_MPEG2VIDEO) {
+        av_log(avctx, AV_LOG_ERROR, "interlacing not supported by codec\n");
+        return -1;
+    }
+
+    // FIXME mpeg2 uses that too
+    if (s->mpeg_quant && s->codec_id != AV_CODEC_ID_MPEG4) {
+        av_log(avctx, AV_LOG_ERROR,
+               "mpeg2 style quantization not supported by codec\n");
+        return -1;
+    }
+
+    if ((s->mpv_flags & FF_MPV_FLAG_CBP_RD) && !avctx->trellis) {
+        av_log(avctx, AV_LOG_ERROR, "CBP RD needs trellis quant\n");
+        return -1;
+    }
+
+    if ((s->mpv_flags & FF_MPV_FLAG_QP_RD) &&
+        s->avctx->mb_decision != FF_MB_DECISION_RD) {
+        av_log(avctx, AV_LOG_ERROR, "QP RD needs mbd=2\n");
+        return -1;
+    }
+
+    if (s->avctx->scenechange_threshold < 1000000000 &&
+        (s->flags & CODEC_FLAG_CLOSED_GOP)) {
+        av_log(avctx, AV_LOG_ERROR,
+               "closed gop with scene change detection are not supported yet, "
+               "set threshold to 1000000000\n");
+        return -1;
+    }
+
+    if (s->flags & CODEC_FLAG_LOW_DELAY) {
+        if (s->codec_id != AV_CODEC_ID_MPEG2VIDEO) {
+            av_log(avctx, AV_LOG_ERROR,
+                  "low delay forcing is only available for mpeg2\n");
+            return -1;
+        }
+        if (s->max_b_frames != 0) {
+            av_log(avctx, AV_LOG_ERROR,
+                   "b frames cannot be used with low delay\n");
+            return -1;
+        }
+    }
+
+    if (s->q_scale_type == 1) {
+        if (avctx->qmax > 12) {
+            av_log(avctx, AV_LOG_ERROR,
+                   "non linear quant only supports qmax <= 12 currently\n");
+            return -1;
+        }
+    }
+
+    if (s->avctx->thread_count > 1         &&
+        s->codec_id != AV_CODEC_ID_MPEG4      &&
+        s->codec_id != AV_CODEC_ID_MPEG1VIDEO &&
+        s->codec_id != AV_CODEC_ID_MPEG2VIDEO &&
+        s->codec_id != AV_CODEC_ID_MJPEG      &&
+        (s->codec_id != AV_CODEC_ID_H263P)) {
+        av_log(avctx, AV_LOG_ERROR,
+               "multi threaded encoding not supported by codec\n");
+        return -1;
+    }
+
+    if (s->avctx->thread_count < 1) {
+        av_log(avctx, AV_LOG_ERROR,
+               "automatic thread number detection not supported by codec, "
+               "patch welcome\n");
+        return -1;
+    }
+
+    if (s->avctx->slices > 1 || s->avctx->thread_count > 1)
+        s->rtp_mode = 1;
+
+    if (s->avctx->thread_count > 1 && s->codec_id == AV_CODEC_ID_H263P)
+        s->h263_slice_structured = 1;
+
+    if (!avctx->time_base.den || !avctx->time_base.num) {
+        av_log(avctx, AV_LOG_ERROR, "framerate not set\n");
+        return -1;
+    }
+
+    i = (INT_MAX / 2 + 128) >> 8;
+    if (avctx->mb_threshold >= i) {
+        av_log(avctx, AV_LOG_ERROR, "mb_threshold too large, max is %d\n",
+               i - 1);
+        return -1;
+    }
+
+    if (avctx->b_frame_strategy && (avctx->flags & CODEC_FLAG_PASS2)) {
+        av_log(avctx, AV_LOG_INFO,
+               "notice: b_frame_strategy only affects the first pass\n");
+        avctx->b_frame_strategy = 0;
+    }
+
+    i = av_gcd(avctx->time_base.den, avctx->time_base.num);
+    if (i > 1) {
+        av_log(avctx, AV_LOG_INFO, "removing common factors from framerate\n");
+        avctx->time_base.den /= i;
+        avctx->time_base.num /= i;
+        //return -1;
+    }
+
+    if (s->mpeg_quant || s->codec_id == AV_CODEC_ID_MPEG1VIDEO || s->codec_id == AV_CODEC_ID_MPEG2VIDEO || s->codec_id == AV_CODEC_ID_MJPEG || s->codec_id==AV_CODEC_ID_AMV) {
+        // (a + x * 3 / 8) / x
+        s->intra_quant_bias = 3 << (QUANT_BIAS_SHIFT - 3);
+        s->inter_quant_bias = 0;
+    } else {
+        s->intra_quant_bias = 0;
+        // (a - x / 4) / x
+        s->inter_quant_bias = -(1 << (QUANT_BIAS_SHIFT - 2));
+    }
+
+    if (avctx->intra_quant_bias != FF_DEFAULT_QUANT_BIAS)
+        s->intra_quant_bias = avctx->intra_quant_bias;
+    if (avctx->inter_quant_bias != FF_DEFAULT_QUANT_BIAS)
+        s->inter_quant_bias = avctx->inter_quant_bias;
+
+    av_log(avctx, AV_LOG_DEBUG, "intra_quant_bias = %d inter_quant_bias = %d\n",s->intra_quant_bias,s->inter_quant_bias);
+
+    avcodec_get_chroma_sub_sample(avctx->pix_fmt, &chroma_h_shift, &chroma_v_shift);
+
+    if (avctx->codec_id == AV_CODEC_ID_MPEG4 &&
+        s->avctx->time_base.den > (1 << 16) - 1) {
+        av_log(avctx, AV_LOG_ERROR,
+               "timebase %d/%d not supported by MPEG 4 standard, "
+               "the maximum admitted value for the timebase denominator "
+               "is %d\n", s->avctx->time_base.num, s->avctx->time_base.den,
+               (1 << 16) - 1);
+        return -1;
+    }
+    s->time_increment_bits = av_log2(s->avctx->time_base.den - 1) + 1;
+
+    switch (avctx->codec->id) {
+    case AV_CODEC_ID_MPEG1VIDEO:
+        s->out_format = FMT_MPEG1;
+        s->low_delay  = !!(s->flags & CODEC_FLAG_LOW_DELAY);
+        avctx->delay  = s->low_delay ? 0 : (s->max_b_frames + 1);
+        break;
+    case AV_CODEC_ID_MPEG2VIDEO:
+        s->out_format = FMT_MPEG1;
+        s->low_delay  = !!(s->flags & CODEC_FLAG_LOW_DELAY);
+        avctx->delay  = s->low_delay ? 0 : (s->max_b_frames + 1);
+        s->rtp_mode   = 1;
+        break;
+    case AV_CODEC_ID_LJPEG:
+    case AV_CODEC_ID_MJPEG:
+    case AV_CODEC_ID_AMV:
+        s->out_format = FMT_MJPEG;
+        s->intra_only = 1; /* force intra only for jpeg */
+        if (avctx->codec->id == AV_CODEC_ID_LJPEG &&
+            (avctx->pix_fmt == AV_PIX_FMT_BGR0
+             || s->avctx->pix_fmt == AV_PIX_FMT_BGRA
+             || s->avctx->pix_fmt == AV_PIX_FMT_BGR24)) {
+            s->mjpeg_vsample[0] = s->mjpeg_hsample[0] =
+            s->mjpeg_vsample[1] = s->mjpeg_hsample[1] =
+            s->mjpeg_vsample[2] = s->mjpeg_hsample[2] = 1;
+        } else if (avctx->pix_fmt == AV_PIX_FMT_YUV444P || avctx->pix_fmt == AV_PIX_FMT_YUVJ444P) {
+            s->mjpeg_vsample[0] = s->mjpeg_vsample[1] = s->mjpeg_vsample[2] = 2;
+            s->mjpeg_hsample[0] = s->mjpeg_hsample[1] = s->mjpeg_hsample[2] = 1;
+        } else {
+            s->mjpeg_vsample[0] = 2;
+            s->mjpeg_vsample[1] = 2 >> chroma_v_shift;
+            s->mjpeg_vsample[2] = 2 >> chroma_v_shift;
+            s->mjpeg_hsample[0] = 2;
+            s->mjpeg_hsample[1] = 2 >> chroma_h_shift;
+            s->mjpeg_hsample[2] = 2 >> chroma_h_shift;
+        }
+        if (!(CONFIG_MJPEG_ENCODER || CONFIG_LJPEG_ENCODER) ||
+            ff_mjpeg_encode_init(s) < 0)
+            return -1;
+        avctx->delay = 0;
+        s->low_delay = 1;
+        break;
+    case AV_CODEC_ID_H261:
+        if (!CONFIG_H261_ENCODER)
+            return -1;
+        if (ff_h261_get_picture_format(s->width, s->height) < 0) {
+            av_log(avctx, AV_LOG_ERROR,
+                   "The specified picture size of %dx%d is not valid for the "
+                   "H.261 codec.\nValid sizes are 176x144, 352x288\n",
+                    s->width, s->height);
+            return -1;
+        }
+        s->out_format = FMT_H261;
+        avctx->delay  = 0;
+        s->low_delay  = 1;
+        break;
+    case AV_CODEC_ID_H263:
+        if (!CONFIG_H263_ENCODER)
+            return -1;
+        if (ff_match_2uint16(ff_h263_format, FF_ARRAY_ELEMS(ff_h263_format),
+                             s->width, s->height) == 8) {
+            av_log(avctx, AV_LOG_ERROR,
+                   "The specified picture size of %dx%d is not valid for "
+                   "the H.263 codec.\nValid sizes are 128x96, 176x144, "
+                   "352x288, 704x576, and 1408x1152. "
+                   "Try H.263+.\n", s->width, s->height);
+            return -1;
+        }
+        s->out_format = FMT_H263;
+        avctx->delay  = 0;
+        s->low_delay  = 1;
+        break;
+    case AV_CODEC_ID_H263P:
+        s->out_format = FMT_H263;
+        s->h263_plus  = 1;
+        /* Fx */
+        s->h263_aic        = (avctx->flags & CODEC_FLAG_AC_PRED) ? 1 : 0;
+        s->modified_quant  = s->h263_aic;
+        s->loop_filter     = (avctx->flags & CODEC_FLAG_LOOP_FILTER) ? 1 : 0;
+        s->unrestricted_mv = s->obmc || s->loop_filter || s->umvplus;
+
+        /* /Fx */
+        /* These are just to be sure */
+        avctx->delay = 0;
+        s->low_delay = 1;
+        break;
+    case AV_CODEC_ID_FLV1:
+        s->out_format      = FMT_H263;
+        s->h263_flv        = 2; /* format = 1; 11-bit codes */
+        s->unrestricted_mv = 1;
+        s->rtp_mode  = 0; /* don't allow GOB */
+        avctx->delay = 0;
+        s->low_delay = 1;
+        break;
+    case AV_CODEC_ID_RV10:
+        s->out_format = FMT_H263;
+        avctx->delay  = 0;
+        s->low_delay  = 1;
+        break;
+    case AV_CODEC_ID_RV20:
+        s->out_format      = FMT_H263;
+        avctx->delay       = 0;
+        s->low_delay       = 1;
+        s->modified_quant  = 1;
+        s->h263_aic        = 1;
+        s->h263_plus       = 1;
+        s->loop_filter     = 1;
+        s->unrestricted_mv = 0;
+        break;
+    case AV_CODEC_ID_MPEG4:
+        s->out_format      = FMT_H263;
+        s->h263_pred       = 1;
+        s->unrestricted_mv = 1;
+        s->low_delay       = s->max_b_frames ? 0 : 1;
+        avctx->delay       = s->low_delay ? 0 : (s->max_b_frames + 1);
+        break;
+    case AV_CODEC_ID_MSMPEG4V2:
+        s->out_format      = FMT_H263;
+        s->h263_pred       = 1;
+        s->unrestricted_mv = 1;
+        s->msmpeg4_version = 2;
+        avctx->delay       = 0;
+        s->low_delay       = 1;
+        break;
+    case AV_CODEC_ID_MSMPEG4V3:
+        s->out_format        = FMT_H263;
+        s->h263_pred         = 1;
+        s->unrestricted_mv   = 1;
+        s->msmpeg4_version   = 3;
+        s->flipflop_rounding = 1;
+        avctx->delay         = 0;
+        s->low_delay         = 1;
+        break;
+    case AV_CODEC_ID_WMV1:
+        s->out_format        = FMT_H263;
+        s->h263_pred         = 1;
+        s->unrestricted_mv   = 1;
+        s->msmpeg4_version   = 4;
+        s->flipflop_rounding = 1;
+        avctx->delay         = 0;
+        s->low_delay         = 1;
+        break;
+    case AV_CODEC_ID_WMV2:
+        s->out_format        = FMT_H263;
+        s->h263_pred         = 1;
+        s->unrestricted_mv   = 1;
+        s->msmpeg4_version   = 5;
+        s->flipflop_rounding = 1;
+        avctx->delay         = 0;
+        s->low_delay         = 1;
+        break;
+    default:
+        return -1;
+    }
+
+    avctx->has_b_frames = !s->low_delay;
+
+    s->encoding = 1;
+
+    s->progressive_frame    =
+    s->progressive_sequence = !(avctx->flags & (CODEC_FLAG_INTERLACED_DCT |
+                                                CODEC_FLAG_INTERLACED_ME) ||
+                                s->alternate_scan);
+
+    /* init */
+    if (ff_MPV_common_init(s) < 0)
+        return -1;
+
+    ff_dct_encode_init(s);
+
+    if ((CONFIG_H263P_ENCODER || CONFIG_RV20_ENCODER) && s->modified_quant)
+        s->chroma_qscale_table = ff_h263_chroma_qscale_table;
+
+    s->quant_precision = 5;
+
+    ff_set_cmp(&s->dsp, s->dsp.ildct_cmp, s->avctx->ildct_cmp);
+    ff_set_cmp(&s->dsp, s->dsp.frame_skip_cmp, s->avctx->frame_skip_cmp);
+
+    if (CONFIG_H261_ENCODER && s->out_format == FMT_H261)
+        ff_h261_encode_init(s);
+    if (CONFIG_H263_ENCODER && s->out_format == FMT_H263)
+        ff_h263_encode_init(s);
+    if (CONFIG_MSMPEG4_ENCODER && s->msmpeg4_version)
+        ff_msmpeg4_encode_init(s);
+    if ((CONFIG_MPEG1VIDEO_ENCODER || CONFIG_MPEG2VIDEO_ENCODER)
+        && s->out_format == FMT_MPEG1)
+        ff_mpeg1_encode_init(s);
+
+    /* init q matrix */
+    for (i = 0; i < 64; i++) {
+        int j = s->dsp.idct_permutation[i];
+        if (CONFIG_MPEG4_ENCODER && s->codec_id == AV_CODEC_ID_MPEG4 &&
+            s->mpeg_quant) {
+            s->intra_matrix[j] = ff_mpeg4_default_intra_matrix[i];
+            s->inter_matrix[j] = ff_mpeg4_default_non_intra_matrix[i];
+        } else if (s->out_format == FMT_H263 || s->out_format == FMT_H261) {
+            s->intra_matrix[j] =
+            s->inter_matrix[j] = ff_mpeg1_default_non_intra_matrix[i];
+        } else {
+            /* mpeg1/2 */
+            s->intra_matrix[j] = ff_mpeg1_default_intra_matrix[i];
+            s->inter_matrix[j] = ff_mpeg1_default_non_intra_matrix[i];
+        }
+        if (s->avctx->intra_matrix)
+            s->intra_matrix[j] = s->avctx->intra_matrix[i];
+        if (s->avctx->inter_matrix)
+            s->inter_matrix[j] = s->avctx->inter_matrix[i];
+    }
+
+    /* precompute matrix */
+    /* for mjpeg, we do include qscale in the matrix */
+    if (s->out_format != FMT_MJPEG) {
+        ff_convert_matrix(&s->dsp, s->q_intra_matrix, s->q_intra_matrix16,
+                          s->intra_matrix, s->intra_quant_bias, avctx->qmin,
+                          31, 1);
+        ff_convert_matrix(&s->dsp, s->q_inter_matrix, s->q_inter_matrix16,
+                          s->inter_matrix, s->inter_quant_bias, avctx->qmin,
+                          31, 0);
+    }
+
+    if (ff_rate_control_init(s) < 0)
+        return -1;
+
+    return 0;
+}
+
+av_cold int ff_MPV_encode_end(AVCodecContext *avctx)
+{
+    MpegEncContext *s = avctx->priv_data;
+
+    ff_rate_control_uninit(s);
+
+    ff_MPV_common_end(s);
+    if ((CONFIG_MJPEG_ENCODER || CONFIG_LJPEG_ENCODER) &&
+        s->out_format == FMT_MJPEG)
+        ff_mjpeg_encode_close(s);
+
+    av_freep(&avctx->extradata);
+
+    return 0;
+}
+
+static int get_sae(uint8_t *src, int ref, int stride)
+{
+    int x,y;
+    int acc = 0;
+
+    for (y = 0; y < 16; y++) {
+        for (x = 0; x < 16; x++) {
+            acc += FFABS(src[x + y * stride] - ref);
+        }
+    }
+
+    return acc;
+}
+
+static int get_intra_count(MpegEncContext *s, uint8_t *src,
+                           uint8_t *ref, int stride)
+{
+    int x, y, w, h;
+    int acc = 0;
+
+    w = s->width  & ~15;
+    h = s->height & ~15;
+
+    for (y = 0; y < h; y += 16) {
+        for (x = 0; x < w; x += 16) {
+            int offset = x + y * stride;
+            int sad  = s->dsp.sad[0](NULL, src + offset, ref + offset, stride,
+                                     16);
+            int mean = (s->dsp.pix_sum(src + offset, stride) + 128) >> 8;
+            int sae  = get_sae(src + offset, mean, stride);
+
+            acc += sae + 500 < sad;
+        }
+    }
+    return acc;
+}
+
+
+static int load_input_picture(MpegEncContext *s, const AVFrame *pic_arg)
+{
+    Picture *pic = NULL;
+    int64_t pts;
+    int i, display_picture_number = 0, ret;
+    const int encoding_delay = s->max_b_frames ? s->max_b_frames :
+                                                 (s->low_delay ? 0 : 1);
+    int direct = 1;
+
+    if (pic_arg) {
+        pts = pic_arg->pts;
+        display_picture_number = s->input_picture_number++;
+
+        if (pts != AV_NOPTS_VALUE) {
+            if (s->user_specified_pts != AV_NOPTS_VALUE) {
+                int64_t time = pts;
+                int64_t last = s->user_specified_pts;
+
+                if (time <= last) {
+                    av_log(s->avctx, AV_LOG_ERROR,
+                           "Error, Invalid timestamp=%"PRId64", "
+                           "last=%"PRId64"\n", pts, s->user_specified_pts);
+                    return -1;
+                }
+
+                if (!s->low_delay && display_picture_number == 1)
+                    s->dts_delta = time - last;
+            }
+            s->user_specified_pts = pts;
+        } else {
+            if (s->user_specified_pts != AV_NOPTS_VALUE) {
+                s->user_specified_pts =
+                pts = s->user_specified_pts + 1;
+                av_log(s->avctx, AV_LOG_INFO,
+                       "Warning: AVFrame.pts=? trying to guess (%"PRId64")\n",
+                       pts);
+            } else {
+                pts = display_picture_number;
+            }
+        }
+    }
+
+    if (pic_arg) {
+        if (!pic_arg->buf[0])
+            direct = 0;
+        if (pic_arg->linesize[0] != s->linesize)
+            direct = 0;
+        if (pic_arg->linesize[1] != s->uvlinesize)
+            direct = 0;
+        if (pic_arg->linesize[2] != s->uvlinesize)
+            direct = 0;
+
+        av_dlog(s->avctx, "%d %d %d %d\n", pic_arg->linesize[0],
+                pic_arg->linesize[1], s->linesize, s->uvlinesize);
+
+        if (direct) {
+            i = ff_find_unused_picture(s, 1);
+            if (i < 0)
+                return i;
+
+            pic = &s->picture[i];
+            pic->reference = 3;
+
+            if ((ret = av_frame_ref(&pic->f, pic_arg)) < 0)
+                return ret;
+            if (ff_alloc_picture(s, pic, 1) < 0) {
+                return -1;
+            }
+        } else {
+            i = ff_find_unused_picture(s, 0);
+            if (i < 0)
+                return i;
+
+            pic = &s->picture[i];
+            pic->reference = 3;
+
+            if (ff_alloc_picture(s, pic, 0) < 0) {
+                return -1;
+            }
+
+            if (pic->f.data[0] + INPLACE_OFFSET == pic_arg->data[0] &&
+                pic->f.data[1] + INPLACE_OFFSET == pic_arg->data[1] &&
+                pic->f.data[2] + INPLACE_OFFSET == pic_arg->data[2]) {
+                // empty
+            } else {
+                int h_chroma_shift, v_chroma_shift;
+                av_pix_fmt_get_chroma_sub_sample(s->avctx->pix_fmt,
+                                                 &h_chroma_shift,
+                                                 &v_chroma_shift);
+
+                for (i = 0; i < 3; i++) {
+                    int src_stride = pic_arg->linesize[i];
+                    int dst_stride = i ? s->uvlinesize : s->linesize;
+                    int h_shift = i ? h_chroma_shift : 0;
+                    int v_shift = i ? v_chroma_shift : 0;
+                    int w = s->width  >> h_shift;
+                    int h = s->height >> v_shift;
+                    uint8_t *src = pic_arg->data[i];
+                    uint8_t *dst = pic->f.data[i];
+
+                    if (s->codec_id == AV_CODEC_ID_AMV && !(s->avctx->flags & CODEC_FLAG_EMU_EDGE)) {
+                        h = ((s->height + 15)/16*16) >> v_shift;
+                    }
+
+                    if (!s->avctx->rc_buffer_size)
+                        dst += INPLACE_OFFSET;
+
+                    if (src_stride == dst_stride)
+                        memcpy(dst, src, src_stride * h);
+                    else {
+                        int h2 = h;
+                        uint8_t *dst2 = dst;
+                        while (h2--) {
+                            memcpy(dst2, src, w);
+                            dst2 += dst_stride;
+                            src += src_stride;
+                        }
+                    }
+                    if ((s->width & 15) || (s->height & 15)) {
+                        s->dsp.draw_edges(dst, dst_stride,
+                                          w, h,
+                                          16>>h_shift,
+                                          16>>v_shift,
+                                          EDGE_BOTTOM);
+                    }
+                }
+            }
+        }
+        copy_picture_attributes(s, &pic->f, pic_arg);
+        pic->f.display_picture_number = display_picture_number;
+        pic->f.pts = pts; // we set this here to avoid modifiying pic_arg
+    }
+
+    /* shift buffer entries */
+    for (i = 1; i < MAX_PICTURE_COUNT /*s->encoding_delay + 1*/; i++)
+        s->input_picture[i - 1] = s->input_picture[i];
+
+    s->input_picture[encoding_delay] = (Picture*) pic;
+
+    return 0;
+}
+
+static int skip_check(MpegEncContext *s, Picture *p, Picture *ref)
+{
+    int x, y, plane;
+    int score = 0;
+    int64_t score64 = 0;
+
+    for (plane = 0; plane < 3; plane++) {
+        const int stride = p->f.linesize[plane];
+        const int bw = plane ? 1 : 2;
+        for (y = 0; y < s->mb_height * bw; y++) {
+            for (x = 0; x < s->mb_width * bw; x++) {
+                int off = p->shared ? 0 : 16;
+                uint8_t *dptr = p->f.data[plane] + 8 * (x + y * stride) + off;
+                uint8_t *rptr = ref->f.data[plane] + 8 * (x + y * stride);
+                int v   = s->dsp.frame_skip_cmp[1](s, dptr, rptr, stride, 8);
+
+                switch (s->avctx->frame_skip_exp) {
+                case 0: score    =  FFMAX(score, v);          break;
+                case 1: score   += FFABS(v);                  break;
+                case 2: score   += v * v;                     break;
+                case 3: score64 += FFABS(v * v * (int64_t)v); break;
+                case 4: score64 += v * v * (int64_t)(v * v);  break;
+                }
+            }
+        }
+    }
+
+    if (score)
+        score64 = score;
+
+    if (score64 < s->avctx->frame_skip_threshold)
+        return 1;
+    if (score64 < ((s->avctx->frame_skip_factor * (int64_t)s->lambda) >> 8))
+        return 1;
+    return 0;
+}
+
+static int encode_frame(AVCodecContext *c, AVFrame *frame)
+{
+    AVPacket pkt = { 0 };
+    int ret, got_output;
+
+    av_init_packet(&pkt);
+    ret = avcodec_encode_video2(c, &pkt, frame, &got_output);
+    if (ret < 0)
+        return ret;
+
+    ret = pkt.size;
+    av_free_packet(&pkt);
+    return ret;
+}
+
+static int estimate_best_b_count(MpegEncContext *s)
+{
+    AVCodec *codec    = avcodec_find_encoder(s->avctx->codec_id);
+    AVCodecContext *c = avcodec_alloc_context3(NULL);
+    AVFrame input[FF_MAX_B_FRAMES + 2];
+    const int scale = s->avctx->brd_scale;
+    int i, j, out_size, p_lambda, b_lambda, lambda2;
+    int64_t best_rd  = INT64_MAX;
+    int best_b_count = -1;
+
+    av_assert0(scale >= 0 && scale <= 3);
+
+    //emms_c();
+    //s->next_picture_ptr->quality;
+    p_lambda = s->last_lambda_for[AV_PICTURE_TYPE_P];
+    //p_lambda * FFABS(s->avctx->b_quant_factor) + s->avctx->b_quant_offset;
+    b_lambda = s->last_lambda_for[AV_PICTURE_TYPE_B];
+    if (!b_lambda) // FIXME we should do this somewhere else
+        b_lambda = p_lambda;
+    lambda2  = (b_lambda * b_lambda + (1 << FF_LAMBDA_SHIFT) / 2) >>
+               FF_LAMBDA_SHIFT;
+
+    c->width        = s->width  >> scale;
+    c->height       = s->height >> scale;
+    c->flags        = CODEC_FLAG_QSCALE | CODEC_FLAG_PSNR |
+                      CODEC_FLAG_INPUT_PRESERVED /*| CODEC_FLAG_EMU_EDGE*/;
+    c->flags       |= s->avctx->flags & CODEC_FLAG_QPEL;
+    c->mb_decision  = s->avctx->mb_decision;
+    c->me_cmp       = s->avctx->me_cmp;
+    c->mb_cmp       = s->avctx->mb_cmp;
+    c->me_sub_cmp   = s->avctx->me_sub_cmp;
+    c->pix_fmt      = AV_PIX_FMT_YUV420P;
+    c->time_base    = s->avctx->time_base;
+    c->max_b_frames = s->max_b_frames;
+
+    if (avcodec_open2(c, codec, NULL) < 0)
+        return -1;
+
+    for (i = 0; i < s->max_b_frames + 2; i++) {
+        int ysize = c->width * c->height;
+        int csize = (c->width / 2) * (c->height / 2);
+        Picture pre_input, *pre_input_ptr = i ? s->input_picture[i - 1] :
+                                                s->next_picture_ptr;
+
+        avcodec_get_frame_defaults(&input[i]);
+        input[i].data[0]     = av_malloc(ysize + 2 * csize);
+        input[i].data[1]     = input[i].data[0] + ysize;
+        input[i].data[2]     = input[i].data[1] + csize;
+        input[i].linesize[0] = c->width;
+        input[i].linesize[1] =
+        input[i].linesize[2] = c->width / 2;
+
+        if (pre_input_ptr && (!i || s->input_picture[i - 1])) {
+            pre_input = *pre_input_ptr;
+
+            if (!pre_input.shared && i) {
+                pre_input.f.data[0] += INPLACE_OFFSET;
+                pre_input.f.data[1] += INPLACE_OFFSET;
+                pre_input.f.data[2] += INPLACE_OFFSET;
+            }
+
+            s->dsp.shrink[scale](input[i].data[0], input[i].linesize[0],
+                                 pre_input.f.data[0], pre_input.f.linesize[0],
+                                 c->width,      c->height);
+            s->dsp.shrink[scale](input[i].data[1], input[i].linesize[1],
+                                 pre_input.f.data[1], pre_input.f.linesize[1],
+                                 c->width >> 1, c->height >> 1);
+            s->dsp.shrink[scale](input[i].data[2], input[i].linesize[2],
+                                 pre_input.f.data[2], pre_input.f.linesize[2],
+                                 c->width >> 1, c->height >> 1);
+        }
+    }
+
+    for (j = 0; j < s->max_b_frames + 1; j++) {
+        int64_t rd = 0;
+
+        if (!s->input_picture[j])
+            break;
+
+        c->error[0] = c->error[1] = c->error[2] = 0;
+
+        input[0].pict_type = AV_PICTURE_TYPE_I;
+        input[0].quality   = 1 * FF_QP2LAMBDA;
+
+        out_size = encode_frame(c, &input[0]);
+
+        //rd += (out_size * lambda2) >> FF_LAMBDA_SHIFT;
+
+        for (i = 0; i < s->max_b_frames + 1; i++) {
+            int is_p = i % (j + 1) == j || i == s->max_b_frames;
+
+            input[i + 1].pict_type = is_p ?
+                                     AV_PICTURE_TYPE_P : AV_PICTURE_TYPE_B;
+            input[i + 1].quality   = is_p ? p_lambda : b_lambda;
+
+            out_size = encode_frame(c, &input[i + 1]);
+
+            rd += (out_size * lambda2) >> (FF_LAMBDA_SHIFT - 3);
+        }
+
+        /* get the delayed frames */
+        while (out_size) {
+            out_size = encode_frame(c, NULL);
+            rd += (out_size * lambda2) >> (FF_LAMBDA_SHIFT - 3);
+        }
+
+        rd += c->error[0] + c->error[1] + c->error[2];
+
+        if (rd < best_rd) {
+            best_rd = rd;
+            best_b_count = j;
+        }
+    }
+
+    avcodec_close(c);
+    av_freep(&c);
+
+    for (i = 0; i < s->max_b_frames + 2; i++) {
+        av_freep(&input[i].data[0]);
+    }
+
+    return best_b_count;
+}
+
+static int select_input_picture(MpegEncContext *s)
+{
+    int i, ret;
+
+    for (i = 1; i < MAX_PICTURE_COUNT; i++)
+        s->reordered_input_picture[i - 1] = s->reordered_input_picture[i];
+    s->reordered_input_picture[MAX_PICTURE_COUNT - 1] = NULL;
+
+    /* set next picture type & ordering */
+    if (s->reordered_input_picture[0] == NULL && s->input_picture[0]) {
+        if (/*s->picture_in_gop_number >= s->gop_size ||*/
+            s->next_picture_ptr == NULL || s->intra_only) {
+            s->reordered_input_picture[0] = s->input_picture[0];
+            s->reordered_input_picture[0]->f.pict_type = AV_PICTURE_TYPE_I;
+            s->reordered_input_picture[0]->f.coded_picture_number =
+                s->coded_picture_number++;
+        } else {
+            int b_frames;
+
+            if (s->avctx->frame_skip_threshold || s->avctx->frame_skip_factor) {
+                if (s->picture_in_gop_number < s->gop_size &&
+                    skip_check(s, s->input_picture[0], s->next_picture_ptr)) {
+                    // FIXME check that te gop check above is +-1 correct
+                    av_frame_unref(&s->input_picture[0]->f);
+
+                    emms_c();
+                    ff_vbv_update(s, 0);
+
+                    goto no_output_pic;
+                }
+            }
+
+            if (s->flags & CODEC_FLAG_PASS2) {
+                for (i = 0; i < s->max_b_frames + 1; i++) {
+                    int pict_num = s->input_picture[0]->f.display_picture_number + i;
+
+                    if (pict_num >= s->rc_context.num_entries)
+                        break;
+                    if (!s->input_picture[i]) {
+                        s->rc_context.entry[pict_num - 1].new_pict_type = AV_PICTURE_TYPE_P;
+                        break;
+                    }
+
+                    s->input_picture[i]->f.pict_type =
+                        s->rc_context.entry[pict_num].new_pict_type;
+                }
+            }
+
+            if (s->avctx->b_frame_strategy == 0) {
+                b_frames = s->max_b_frames;
+                while (b_frames && !s->input_picture[b_frames])
+                    b_frames--;
+            } else if (s->avctx->b_frame_strategy == 1) {
+                for (i = 1; i < s->max_b_frames + 1; i++) {
+                    if (s->input_picture[i] &&
+                        s->input_picture[i]->b_frame_score == 0) {
+                        s->input_picture[i]->b_frame_score =
+                            get_intra_count(s,
+                                            s->input_picture[i    ]->f.data[0],
+                                            s->input_picture[i - 1]->f.data[0],
+                                            s->linesize) + 1;
+                    }
+                }
+                for (i = 0; i < s->max_b_frames + 1; i++) {
+                    if (s->input_picture[i] == NULL ||
+                        s->input_picture[i]->b_frame_score - 1 >
+                            s->mb_num / s->avctx->b_sensitivity)
+                        break;
+                }
+
+                b_frames = FFMAX(0, i - 1);
+
+                /* reset scores */
+                for (i = 0; i < b_frames + 1; i++) {
+                    s->input_picture[i]->b_frame_score = 0;
+                }
+            } else if (s->avctx->b_frame_strategy == 2) {
+                b_frames = estimate_best_b_count(s);
+            } else {
+                av_log(s->avctx, AV_LOG_ERROR, "illegal b frame strategy\n");
+                b_frames = 0;
+            }
+
+            emms_c();
+
+            for (i = b_frames - 1; i >= 0; i--) {
+                int type = s->input_picture[i]->f.pict_type;
+                if (type && type != AV_PICTURE_TYPE_B)
+                    b_frames = i;
+            }
+            if (s->input_picture[b_frames]->f.pict_type == AV_PICTURE_TYPE_B &&
+                b_frames == s->max_b_frames) {
+                av_log(s->avctx, AV_LOG_ERROR,
+                       "warning, too many b frames in a row\n");
+            }
+
+            if (s->picture_in_gop_number + b_frames >= s->gop_size) {
+                if ((s->mpv_flags & FF_MPV_FLAG_STRICT_GOP) &&
+                    s->gop_size > s->picture_in_gop_number) {
+                    b_frames = s->gop_size - s->picture_in_gop_number - 1;
+                } else {
+                    if (s->flags & CODEC_FLAG_CLOSED_GOP)
+                        b_frames = 0;
+                    s->input_picture[b_frames]->f.pict_type = AV_PICTURE_TYPE_I;
+                }
+            }
+
+            if ((s->flags & CODEC_FLAG_CLOSED_GOP) && b_frames &&
+                s->input_picture[b_frames]->f.pict_type == AV_PICTURE_TYPE_I)
+                b_frames--;
+
+            s->reordered_input_picture[0] = s->input_picture[b_frames];
+            if (s->reordered_input_picture[0]->f.pict_type != AV_PICTURE_TYPE_I)
+                s->reordered_input_picture[0]->f.pict_type = AV_PICTURE_TYPE_P;
+            s->reordered_input_picture[0]->f.coded_picture_number =
+                s->coded_picture_number++;
+            for (i = 0; i < b_frames; i++) {
+                s->reordered_input_picture[i + 1] = s->input_picture[i];
+                s->reordered_input_picture[i + 1]->f.pict_type =
+                    AV_PICTURE_TYPE_B;
+                s->reordered_input_picture[i + 1]->f.coded_picture_number =
+                    s->coded_picture_number++;
+            }
+        }
+    }
+no_output_pic:
+    if (s->reordered_input_picture[0]) {
+        s->reordered_input_picture[0]->reference =
+           s->reordered_input_picture[0]->f.pict_type !=
+               AV_PICTURE_TYPE_B ? 3 : 0;
+
+        ff_mpeg_unref_picture(s, &s->new_picture);
+        if ((ret = ff_mpeg_ref_picture(s, &s->new_picture, s->reordered_input_picture[0])))
+            return ret;
+
+        if (s->reordered_input_picture[0]->shared || s->avctx->rc_buffer_size) {
+            // input is a shared pix, so we can't modifiy it -> alloc a new
+            // one & ensure that the shared one is reuseable
+
+            Picture *pic;
+            int i = ff_find_unused_picture(s, 0);
+            if (i < 0)
+                return i;
+            pic = &s->picture[i];
+
+            pic->reference = s->reordered_input_picture[0]->reference;
+            if (ff_alloc_picture(s, pic, 0) < 0) {
+                return -1;
+            }
+
+            copy_picture_attributes(s, &pic->f,
+                                    &s->reordered_input_picture[0]->f);
+
+            /* mark us unused / free shared pic */
+            av_frame_unref(&s->reordered_input_picture[0]->f);
+            s->reordered_input_picture[0]->shared = 0;
+
+            s->current_picture_ptr = pic;
+        } else {
+            // input is not a shared pix -> reuse buffer for current_pix
+            s->current_picture_ptr = s->reordered_input_picture[0];
+            for (i = 0; i < 4; i++) {
+                s->new_picture.f.data[i] += INPLACE_OFFSET;
+            }
+        }
+        ff_mpeg_unref_picture(s, &s->current_picture);
+        if ((ret = ff_mpeg_ref_picture(s, &s->current_picture,
+                                       s->current_picture_ptr)) < 0)
+            return ret;
+
+        s->picture_number = s->new_picture.f.display_picture_number;
+    } else {
+        ff_mpeg_unref_picture(s, &s->new_picture);
+    }
+    return 0;
+}
+
+int ff_MPV_encode_picture(AVCodecContext *avctx, AVPacket *pkt,
+                          AVFrame *pic_arg, int *got_packet)
+{
+    MpegEncContext *s = avctx->priv_data;
+    int i, stuffing_count, ret;
+    int context_count = s->slice_context_count;
+
+    s->picture_in_gop_number++;
+
+    if (load_input_picture(s, pic_arg) < 0)
+        return -1;
+
+    if (select_input_picture(s) < 0) {
+        return -1;
+    }
+
+    /* output? */
+    if (s->new_picture.f.data[0]) {
+        if ((ret = ff_alloc_packet2(avctx, pkt, s->mb_width*s->mb_height*(MAX_MB_BYTES+100)+10000)) < 0)
+            return ret;
+        if (s->mb_info) {
+            s->mb_info_ptr = av_packet_new_side_data(pkt,
+                                 AV_PKT_DATA_H263_MB_INFO,
+                                 s->mb_width*s->mb_height*12);
+            s->prev_mb_info = s->last_mb_info = s->mb_info_size = 0;
+        }
+
+        for (i = 0; i < context_count; i++) {
+            int start_y = s->thread_context[i]->start_mb_y;
+            int   end_y = s->thread_context[i]->  end_mb_y;
+            int h       = s->mb_height;
+            uint8_t *start = pkt->data + (size_t)(((int64_t) pkt->size) * start_y / h);
+            uint8_t *end   = pkt->data + (size_t)(((int64_t) pkt->size) *   end_y / h);
+
+            init_put_bits(&s->thread_context[i]->pb, start, end - start);
+        }
+
+        s->pict_type = s->new_picture.f.pict_type;
+        //emms_c();
+        if (ff_MPV_frame_start(s, avctx) < 0)
+            return -1;
+vbv_retry:
+        if (encode_picture(s, s->picture_number) < 0)
+            return -1;
+
+        avctx->header_bits = s->header_bits;
+        avctx->mv_bits     = s->mv_bits;
+        avctx->misc_bits   = s->misc_bits;
+        avctx->i_tex_bits  = s->i_tex_bits;
+        avctx->p_tex_bits  = s->p_tex_bits;
+        avctx->i_count     = s->i_count;
+        // FIXME f/b_count in avctx
+        avctx->p_count     = s->mb_num - s->i_count - s->skip_count;
+        avctx->skip_count  = s->skip_count;
+
+        ff_MPV_frame_end(s);
+
+        if (CONFIG_MJPEG_ENCODER && s->out_format == FMT_MJPEG)
+            ff_mjpeg_encode_picture_trailer(s);
+
+        if (avctx->rc_buffer_size) {
+            RateControlContext *rcc = &s->rc_context;
+            int max_size = rcc->buffer_index * avctx->rc_max_available_vbv_use;
+
+            if (put_bits_count(&s->pb) > max_size &&
+                s->lambda < s->avctx->lmax) {
+                s->next_lambda = FFMAX(s->lambda + 1, s->lambda *
+                                       (s->qscale + 1) / s->qscale);
+                if (s->adaptive_quant) {
+                    int i;
+                    for (i = 0; i < s->mb_height * s->mb_stride; i++)
+                        s->lambda_table[i] =
+                            FFMAX(s->lambda_table[i] + 1,
+                                  s->lambda_table[i] * (s->qscale + 1) /
+                                  s->qscale);
+                }
+                s->mb_skipped = 0;        // done in MPV_frame_start()
+                // done in encode_picture() so we must undo it
+                if (s->pict_type == AV_PICTURE_TYPE_P) {
+                    if (s->flipflop_rounding          ||
+                        s->codec_id == AV_CODEC_ID_H263P ||
+                        s->codec_id == AV_CODEC_ID_MPEG4)
+                        s->no_rounding ^= 1;
+                }
+                if (s->pict_type != AV_PICTURE_TYPE_B) {
+                    s->time_base       = s->last_time_base;
+                    s->last_non_b_time = s->time - s->pp_time;
+                }
+                for (i = 0; i < context_count; i++) {
+                    PutBitContext *pb = &s->thread_context[i]->pb;
+                    init_put_bits(pb, pb->buf, pb->buf_end - pb->buf);
+                }
+                goto vbv_retry;
+            }
+
+            assert(s->avctx->rc_max_rate);
+        }
+
+        if (s->flags & CODEC_FLAG_PASS1)
+            ff_write_pass1_stats(s);
+
+        for (i = 0; i < 4; i++) {
+            s->current_picture_ptr->f.error[i] = s->current_picture.f.error[i];
+            avctx->error[i] += s->current_picture_ptr->f.error[i];
+        }
+
+        if (s->flags & CODEC_FLAG_PASS1)
+            assert(avctx->header_bits + avctx->mv_bits + avctx->misc_bits +
+                   avctx->i_tex_bits + avctx->p_tex_bits ==
+                       put_bits_count(&s->pb));
+        flush_put_bits(&s->pb);
+        s->frame_bits  = put_bits_count(&s->pb);
+
+        stuffing_count = ff_vbv_update(s, s->frame_bits);
+        s->stuffing_bits = 8*stuffing_count;
+        if (stuffing_count) {
+            if (s->pb.buf_end - s->pb.buf - (put_bits_count(&s->pb) >> 3) <
+                    stuffing_count + 50) {
+                av_log(s->avctx, AV_LOG_ERROR, "stuffing too large\n");
+                return -1;
+            }
+
+            switch (s->codec_id) {
+            case AV_CODEC_ID_MPEG1VIDEO:
+            case AV_CODEC_ID_MPEG2VIDEO:
+                while (stuffing_count--) {
+                    put_bits(&s->pb, 8, 0);
+                }
+            break;
+            case AV_CODEC_ID_MPEG4:
+                put_bits(&s->pb, 16, 0);
+                put_bits(&s->pb, 16, 0x1C3);
+                stuffing_count -= 4;
+                while (stuffing_count--) {
+                    put_bits(&s->pb, 8, 0xFF);
+                }
+            break;
+            default:
+                av_log(s->avctx, AV_LOG_ERROR, "vbv buffer overflow\n");
+            }
+            flush_put_bits(&s->pb);
+            s->frame_bits  = put_bits_count(&s->pb);
+        }
+
+        /* update mpeg1/2 vbv_delay for CBR */
+        if (s->avctx->rc_max_rate                          &&
+            s->avctx->rc_min_rate == s->avctx->rc_max_rate &&
+            s->out_format == FMT_MPEG1                     &&
+            90000LL * (avctx->rc_buffer_size - 1) <=
+                s->avctx->rc_max_rate * 0xFFFFLL) {
+            int vbv_delay, min_delay;
+            double inbits  = s->avctx->rc_max_rate *
+                             av_q2d(s->avctx->time_base);
+            int    minbits = s->frame_bits - 8 *
+                             (s->vbv_delay_ptr - s->pb.buf - 1);
+            double bits    = s->rc_context.buffer_index + minbits - inbits;
+
+            if (bits < 0)
+                av_log(s->avctx, AV_LOG_ERROR,
+                       "Internal error, negative bits\n");
+
+            assert(s->repeat_first_field == 0);
+
+            vbv_delay = bits * 90000 / s->avctx->rc_max_rate;
+            min_delay = (minbits * 90000LL + s->avctx->rc_max_rate - 1) /
+                        s->avctx->rc_max_rate;
+
+            vbv_delay = FFMAX(vbv_delay, min_delay);
+
+            av_assert0(vbv_delay < 0xFFFF);
+
+            s->vbv_delay_ptr[0] &= 0xF8;
+            s->vbv_delay_ptr[0] |= vbv_delay >> 13;
+            s->vbv_delay_ptr[1]  = vbv_delay >> 5;
+            s->vbv_delay_ptr[2] &= 0x07;
+            s->vbv_delay_ptr[2] |= vbv_delay << 3;
+            avctx->vbv_delay     = vbv_delay * 300;
+        }
+        s->total_bits     += s->frame_bits;
+        avctx->frame_bits  = s->frame_bits;
+
+        pkt->pts = s->current_picture.f.pts;
+        if (!s->low_delay && s->pict_type != AV_PICTURE_TYPE_B) {
+            if (!s->current_picture.f.coded_picture_number)
+                pkt->dts = pkt->pts - s->dts_delta;
+            else
+                pkt->dts = s->reordered_pts;
+            s->reordered_pts = pkt->pts;
+        } else
+            pkt->dts = pkt->pts;
+        if (s->current_picture.f.key_frame)
+            pkt->flags |= AV_PKT_FLAG_KEY;
+        if (s->mb_info)
+            av_packet_shrink_side_data(pkt, AV_PKT_DATA_H263_MB_INFO, s->mb_info_size);
+    } else {
+        s->frame_bits = 0;
+    }
+    assert((s->frame_bits & 7) == 0);
+
+    pkt->size = s->frame_bits / 8;
+    *got_packet = !!pkt->size;
+    return 0;
+}
+
+static inline void dct_single_coeff_elimination(MpegEncContext *s,
+                                                int n, int threshold)
+{
+    static const char tab[64] = {
+        3, 2, 2, 1, 1, 1, 1, 1,
+        1, 1, 1, 1, 1, 1, 1, 1,
+        1, 1, 1, 1, 1, 1, 1, 1,
+        0, 0, 0, 0, 0, 0, 0, 0,
+        0, 0, 0, 0, 0, 0, 0, 0,
+        0, 0, 0, 0, 0, 0, 0, 0,
+        0, 0, 0, 0, 0, 0, 0, 0,
+        0, 0, 0, 0, 0, 0, 0, 0
+    };
+    int score = 0;
+    int run = 0;
+    int i;
+    int16_t *block = s->block[n];
+    const int last_index = s->block_last_index[n];
+    int skip_dc;
+
+    if (threshold < 0) {
+        skip_dc = 0;
+        threshold = -threshold;
+    } else
+        skip_dc = 1;
+
+    /* Are all we could set to zero already zero? */
+    if (last_index <= skip_dc - 1)
+        return;
+
+    for (i = 0; i <= last_index; i++) {
+        const int j = s->intra_scantable.permutated[i];
+        const int level = FFABS(block[j]);
+        if (level == 1) {
+            if (skip_dc && i == 0)
+                continue;
+            score += tab[run];
+            run = 0;
+        } else if (level > 1) {
+            return;
+        } else {
+            run++;
+        }
+    }
+    if (score >= threshold)
+        return;
+    for (i = skip_dc; i <= last_index; i++) {
+        const int j = s->intra_scantable.permutated[i];
+        block[j] = 0;
+    }
+    if (block[0])
+        s->block_last_index[n] = 0;
+    else
+        s->block_last_index[n] = -1;
+}
+
+static inline void clip_coeffs(MpegEncContext *s, int16_t *block,
+                               int last_index)
+{
+    int i;
+    const int maxlevel = s->max_qcoeff;
+    const int minlevel = s->min_qcoeff;
+    int overflow = 0;
+
+    if (s->mb_intra) {
+        i = 1; // skip clipping of intra dc
+    } else
+        i = 0;
+
+    for (; i <= last_index; i++) {
+        const int j = s->intra_scantable.permutated[i];
+        int level = block[j];
+
+        if (level > maxlevel) {
+            level = maxlevel;
+            overflow++;
+        } else if (level < minlevel) {
+            level = minlevel;
+            overflow++;
+        }
+
+        block[j] = level;
+    }
+
+    if (overflow && s->avctx->mb_decision == FF_MB_DECISION_SIMPLE)
+        av_log(s->avctx, AV_LOG_INFO,
+               "warning, clipping %d dct coefficients to %d..%d\n",
+               overflow, minlevel, maxlevel);
+}
+
+static void get_visual_weight(int16_t *weight, uint8_t *ptr, int stride)
+{
+    int x, y;
+    // FIXME optimize
+    for (y = 0; y < 8; y++) {
+        for (x = 0; x < 8; x++) {
+            int x2, y2;
+            int sum = 0;
+            int sqr = 0;
+            int count = 0;
+
+            for (y2 = FFMAX(y - 1, 0); y2 < FFMIN(8, y + 2); y2++) {
+                for (x2= FFMAX(x - 1, 0); x2 < FFMIN(8, x + 2); x2++) {
+                    int v = ptr[x2 + y2 * stride];
+                    sum += v;
+                    sqr += v * v;
+                    count++;
+                }
+            }
+            weight[x + 8 * y]= (36 * ff_sqrt(count * sqr - sum * sum)) / count;
+        }
+    }
+}
+
+static av_always_inline void encode_mb_internal(MpegEncContext *s,
+                                                int motion_x, int motion_y,
+                                                int mb_block_height,
+                                                int mb_block_width,
+                                                int mb_block_count)
+{
+    int16_t weight[12][64];
+    int16_t orig[12][64];
+    const int mb_x = s->mb_x;
+    const int mb_y = s->mb_y;
+    int i;
+    int skip_dct[12];
+    int dct_offset = s->linesize * 8; // default for progressive frames
+    int uv_dct_offset = s->uvlinesize * 8;
+    uint8_t *ptr_y, *ptr_cb, *ptr_cr;
+    int wrap_y, wrap_c;
+
+    for (i = 0; i < mb_block_count; i++)
+        skip_dct[i] = s->skipdct;
+
+    if (s->adaptive_quant) {
+        const int last_qp = s->qscale;
+        const int mb_xy = mb_x + mb_y * s->mb_stride;
+
+        s->lambda = s->lambda_table[mb_xy];
+        update_qscale(s);
+
+        if (!(s->mpv_flags & FF_MPV_FLAG_QP_RD)) {
+            s->qscale = s->current_picture_ptr->qscale_table[mb_xy];
+            s->dquant = s->qscale - last_qp;
+
+            if (s->out_format == FMT_H263) {
+                s->dquant = av_clip(s->dquant, -2, 2);
+
+                if (s->codec_id == AV_CODEC_ID_MPEG4) {
+                    if (!s->mb_intra) {
+                        if (s->pict_type == AV_PICTURE_TYPE_B) {
+                            if (s->dquant & 1 || s->mv_dir & MV_DIRECT)
+                                s->dquant = 0;
+                        }
+                        if (s->mv_type == MV_TYPE_8X8)
+                            s->dquant = 0;
+                    }
+                }
+            }
+        }
+        ff_set_qscale(s, last_qp + s->dquant);
+    } else if (s->mpv_flags & FF_MPV_FLAG_QP_RD)
+        ff_set_qscale(s, s->qscale + s->dquant);
+
+    wrap_y = s->linesize;
+    wrap_c = s->uvlinesize;
+    ptr_y  = s->new_picture.f.data[0] +
+             (mb_y * 16 * wrap_y)              + mb_x * 16;
+    ptr_cb = s->new_picture.f.data[1] +
+             (mb_y * mb_block_height * wrap_c) + mb_x * mb_block_width;
+    ptr_cr = s->new_picture.f.data[2] +
+             (mb_y * mb_block_height * wrap_c) + mb_x * mb_block_width;
+
+    if((mb_x*16+16 > s->width || mb_y*16+16 > s->height) && s->codec_id != AV_CODEC_ID_AMV){
+        uint8_t *ebuf = s->edge_emu_buffer + 32;
+        int cw = (s->width  + s->chroma_x_shift) >> s->chroma_x_shift;
+        int ch = (s->height + s->chroma_y_shift) >> s->chroma_y_shift;
+        s->vdsp.emulated_edge_mc(ebuf, ptr_y, wrap_y, 16, 16, mb_x * 16,
+                                 mb_y * 16, s->width, s->height);
+        ptr_y = ebuf;
+        s->vdsp.emulated_edge_mc(ebuf + 18 * wrap_y, ptr_cb, wrap_c, mb_block_width,
+                                 mb_block_height, mb_x * mb_block_width, mb_y * mb_block_height,
+                                 cw, ch);
+        ptr_cb = ebuf + 18 * wrap_y;
+        s->vdsp.emulated_edge_mc(ebuf + 18 * wrap_y + 16, ptr_cr, wrap_c, mb_block_width,
+                                 mb_block_height, mb_x * mb_block_width, mb_y * mb_block_height,
+                                 cw, ch);
+        ptr_cr = ebuf + 18 * wrap_y + 16;
+    }
+
+    if (s->mb_intra) {
+        if (s->flags & CODEC_FLAG_INTERLACED_DCT) {
+            int progressive_score, interlaced_score;
+
+            s->interlaced_dct = 0;
+            progressive_score = s->dsp.ildct_cmp[4](s, ptr_y,
+                                                    NULL, wrap_y, 8) +
+                                s->dsp.ildct_cmp[4](s, ptr_y + wrap_y * 8,
+                                                    NULL, wrap_y, 8) - 400;
+
+            if (progressive_score > 0) {
+                interlaced_score = s->dsp.ildct_cmp[4](s, ptr_y,
+                                                       NULL, wrap_y * 2, 8) +
+                                   s->dsp.ildct_cmp[4](s, ptr_y + wrap_y,
+                                                       NULL, wrap_y * 2, 8);
+                if (progressive_score > interlaced_score) {
+                    s->interlaced_dct = 1;
+
+                    dct_offset = wrap_y;
+                    uv_dct_offset = wrap_c;
+                    wrap_y <<= 1;
+                    if (s->chroma_format == CHROMA_422 ||
+                        s->chroma_format == CHROMA_444)
+                        wrap_c <<= 1;
+                }
+            }
+        }
+
+        s->dsp.get_pixels(s->block[0], ptr_y                  , wrap_y);
+        s->dsp.get_pixels(s->block[1], ptr_y              + 8 , wrap_y);
+        s->dsp.get_pixels(s->block[2], ptr_y + dct_offset     , wrap_y);
+        s->dsp.get_pixels(s->block[3], ptr_y + dct_offset + 8 , wrap_y);
+
+        if (s->flags & CODEC_FLAG_GRAY) {
+            skip_dct[4] = 1;
+            skip_dct[5] = 1;
+        } else {
+            s->dsp.get_pixels(s->block[4], ptr_cb, wrap_c);
+            s->dsp.get_pixels(s->block[5], ptr_cr, wrap_c);
+            if (!s->chroma_y_shift && s->chroma_x_shift) { /* 422 */
+                s->dsp.get_pixels(s->block[6], ptr_cb + uv_dct_offset, wrap_c);
+                s->dsp.get_pixels(s->block[7], ptr_cr + uv_dct_offset, wrap_c);
+            } else if (!s->chroma_y_shift && !s->chroma_x_shift) { /* 444 */
+                s->dsp.get_pixels(s->block[6], ptr_cb + 8, wrap_c);
+                s->dsp.get_pixels(s->block[7], ptr_cr + 8, wrap_c);
+                s->dsp.get_pixels(s->block[8], ptr_cb + uv_dct_offset, wrap_c);
+                s->dsp.get_pixels(s->block[9], ptr_cr + uv_dct_offset, wrap_c);
+                s->dsp.get_pixels(s->block[10], ptr_cb + uv_dct_offset + 8, wrap_c);
+                s->dsp.get_pixels(s->block[11], ptr_cr + uv_dct_offset + 8, wrap_c);
+            }
+        }
+    } else {
+        op_pixels_func (*op_pix)[4];
+        qpel_mc_func (*op_qpix)[16];
+        uint8_t *dest_y, *dest_cb, *dest_cr;
+
+        dest_y  = s->dest[0];
+        dest_cb = s->dest[1];
+        dest_cr = s->dest[2];
+
+        if ((!s->no_rounding) || s->pict_type == AV_PICTURE_TYPE_B) {
+            op_pix  = s->hdsp.put_pixels_tab;
+            op_qpix = s->dsp.put_qpel_pixels_tab;
+        } else {
+            op_pix  = s->hdsp.put_no_rnd_pixels_tab;
+            op_qpix = s->dsp.put_no_rnd_qpel_pixels_tab;
+        }
+
+        if (s->mv_dir & MV_DIR_FORWARD) {
+            ff_MPV_motion(s, dest_y, dest_cb, dest_cr, 0,
+                          s->last_picture.f.data,
+                          op_pix, op_qpix);
+            op_pix  = s->hdsp.avg_pixels_tab;
+            op_qpix = s->dsp.avg_qpel_pixels_tab;
+        }
+        if (s->mv_dir & MV_DIR_BACKWARD) {
+            ff_MPV_motion(s, dest_y, dest_cb, dest_cr, 1,
+                          s->next_picture.f.data,
+                          op_pix, op_qpix);
+        }
+
+        if (s->flags & CODEC_FLAG_INTERLACED_DCT) {
+            int progressive_score, interlaced_score;
+
+            s->interlaced_dct = 0;
+            progressive_score = s->dsp.ildct_cmp[0](s, dest_y,
+                                                    ptr_y,              wrap_y,
+                                                    8) +
+                                s->dsp.ildct_cmp[0](s, dest_y + wrap_y * 8,
+                                                    ptr_y + wrap_y * 8, wrap_y,
+                                                    8) - 400;
+
+            if (s->avctx->ildct_cmp == FF_CMP_VSSE)
+                progressive_score -= 400;
+
+            if (progressive_score > 0) {
+                interlaced_score = s->dsp.ildct_cmp[0](s, dest_y,
+                                                       ptr_y,
+                                                       wrap_y * 2, 8) +
+                                   s->dsp.ildct_cmp[0](s, dest_y + wrap_y,
+                                                       ptr_y + wrap_y,
+                                                       wrap_y * 2, 8);
+
+                if (progressive_score > interlaced_score) {
+                    s->interlaced_dct = 1;
+
+                    dct_offset = wrap_y;
+                    uv_dct_offset = wrap_c;
+                    wrap_y <<= 1;
+                    if (s->chroma_format == CHROMA_422)
+                        wrap_c <<= 1;
+                }
+            }
+        }
+
+        s->dsp.diff_pixels(s->block[0], ptr_y, dest_y, wrap_y);
+        s->dsp.diff_pixels(s->block[1], ptr_y + 8, dest_y + 8, wrap_y);
+        s->dsp.diff_pixels(s->block[2], ptr_y + dct_offset,
+                           dest_y + dct_offset, wrap_y);
+        s->dsp.diff_pixels(s->block[3], ptr_y + dct_offset + 8,
+                           dest_y + dct_offset + 8, wrap_y);
+
+        if (s->flags & CODEC_FLAG_GRAY) {
+            skip_dct[4] = 1;
+            skip_dct[5] = 1;
+        } else {
+            s->dsp.diff_pixels(s->block[4], ptr_cb, dest_cb, wrap_c);
+            s->dsp.diff_pixels(s->block[5], ptr_cr, dest_cr, wrap_c);
+            if (!s->chroma_y_shift) { /* 422 */
+                s->dsp.diff_pixels(s->block[6], ptr_cb + uv_dct_offset,
+                                   dest_cb + uv_dct_offset, wrap_c);
+                s->dsp.diff_pixels(s->block[7], ptr_cr + uv_dct_offset,
+                                   dest_cr + uv_dct_offset, wrap_c);
+            }
+        }
+        /* pre quantization */
+        if (s->current_picture.mc_mb_var[s->mb_stride * mb_y + mb_x] <
+                2 * s->qscale * s->qscale) {
+            // FIXME optimize
+            if (s->dsp.sad[1](NULL, ptr_y , dest_y,
+                              wrap_y, 8) < 20 * s->qscale)
+                skip_dct[0] = 1;
+            if (s->dsp.sad[1](NULL, ptr_y + 8,
+                              dest_y + 8, wrap_y, 8) < 20 * s->qscale)
+                skip_dct[1] = 1;
+            if (s->dsp.sad[1](NULL, ptr_y + dct_offset,
+                              dest_y + dct_offset, wrap_y, 8) < 20 * s->qscale)
+                skip_dct[2] = 1;
+            if (s->dsp.sad[1](NULL, ptr_y + dct_offset + 8,
+                              dest_y + dct_offset + 8,
+                              wrap_y, 8) < 20 * s->qscale)
+                skip_dct[3] = 1;
+            if (s->dsp.sad[1](NULL, ptr_cb, dest_cb,
+                              wrap_c, 8) < 20 * s->qscale)
+                skip_dct[4] = 1;
+            if (s->dsp.sad[1](NULL, ptr_cr, dest_cr,
+                              wrap_c, 8) < 20 * s->qscale)
+                skip_dct[5] = 1;
+            if (!s->chroma_y_shift) { /* 422 */
+                if (s->dsp.sad[1](NULL, ptr_cb + uv_dct_offset,
+                                  dest_cb + uv_dct_offset,
+                                  wrap_c, 8) < 20 * s->qscale)
+                    skip_dct[6] = 1;
+                if (s->dsp.sad[1](NULL, ptr_cr + uv_dct_offset,
+                                  dest_cr + uv_dct_offset,
+                                  wrap_c, 8) < 20 * s->qscale)
+                    skip_dct[7] = 1;
+            }
+        }
+    }
+
+    if (s->quantizer_noise_shaping) {
+        if (!skip_dct[0])
+            get_visual_weight(weight[0], ptr_y                 , wrap_y);
+        if (!skip_dct[1])
+            get_visual_weight(weight[1], ptr_y              + 8, wrap_y);
+        if (!skip_dct[2])
+            get_visual_weight(weight[2], ptr_y + dct_offset    , wrap_y);
+        if (!skip_dct[3])
+            get_visual_weight(weight[3], ptr_y + dct_offset + 8, wrap_y);
+        if (!skip_dct[4])
+            get_visual_weight(weight[4], ptr_cb                , wrap_c);
+        if (!skip_dct[5])
+            get_visual_weight(weight[5], ptr_cr                , wrap_c);
+        if (!s->chroma_y_shift) { /* 422 */
+            if (!skip_dct[6])
+                get_visual_weight(weight[6], ptr_cb + uv_dct_offset,
+                                  wrap_c);
+            if (!skip_dct[7])
+                get_visual_weight(weight[7], ptr_cr + uv_dct_offset,
+                                  wrap_c);
+        }
+        memcpy(orig[0], s->block[0], sizeof(int16_t) * 64 * mb_block_count);
+    }
+
+    /* DCT & quantize */
+    av_assert2(s->out_format != FMT_MJPEG || s->qscale == 8);
+    {
+        for (i = 0; i < mb_block_count; i++) {
+            if (!skip_dct[i]) {
+                int overflow;
+                s->block_last_index[i] = s->dct_quantize(s, s->block[i], i, s->qscale, &overflow);
+                // FIXME we could decide to change to quantizer instead of
+                // clipping
+                // JS: I don't think that would be a good idea it could lower
+                //     quality instead of improve it. Just INTRADC clipping
+                //     deserves changes in quantizer
+                if (overflow)
+                    clip_coeffs(s, s->block[i], s->block_last_index[i]);
+            } else
+                s->block_last_index[i] = -1;
+        }
+        if (s->quantizer_noise_shaping) {
+            for (i = 0; i < mb_block_count; i++) {
+                if (!skip_dct[i]) {
+                    s->block_last_index[i] =
+                        dct_quantize_refine(s, s->block[i], weight[i],
+                                            orig[i], i, s->qscale);
+                }
+            }
+        }
+
+        if (s->luma_elim_threshold && !s->mb_intra)
+            for (i = 0; i < 4; i++)
+                dct_single_coeff_elimination(s, i, s->luma_elim_threshold);
+        if (s->chroma_elim_threshold && !s->mb_intra)
+            for (i = 4; i < mb_block_count; i++)
+                dct_single_coeff_elimination(s, i, s->chroma_elim_threshold);
+
+        if (s->mpv_flags & FF_MPV_FLAG_CBP_RD) {
+            for (i = 0; i < mb_block_count; i++) {
+                if (s->block_last_index[i] == -1)
+                    s->coded_score[i] = INT_MAX / 256;
+            }
+        }
+    }
+
+    if ((s->flags & CODEC_FLAG_GRAY) && s->mb_intra) {
+        s->block_last_index[4] =
+        s->block_last_index[5] = 0;
+        s->block[4][0] =
+        s->block[5][0] = (1024 + s->c_dc_scale / 2) / s->c_dc_scale;
+        if (!s->chroma_y_shift) { /* 422 / 444 */
+            for (i=6; i<12; i++) {
+                s->block_last_index[i] = 0;
+                s->block[i][0] = s->block[4][0];
+            }
+        }
+    }
+
+    // non c quantize code returns incorrect block_last_index FIXME
+    if (s->alternate_scan && s->dct_quantize != ff_dct_quantize_c) {
+        for (i = 0; i < mb_block_count; i++) {
+            int j;
+            if (s->block_last_index[i] > 0) {
+                for (j = 63; j > 0; j--) {
+                    if (s->block[i][s->intra_scantable.permutated[j]])
+                        break;
+                }
+                s->block_last_index[i] = j;
+            }
+        }
+    }
+
+    /* huffman encode */
+    switch(s->codec_id){ //FIXME funct ptr could be slightly faster
+    case AV_CODEC_ID_MPEG1VIDEO:
+    case AV_CODEC_ID_MPEG2VIDEO:
+        if (CONFIG_MPEG1VIDEO_ENCODER || CONFIG_MPEG2VIDEO_ENCODER)
+            ff_mpeg1_encode_mb(s, s->block, motion_x, motion_y);
+        break;
+    case AV_CODEC_ID_MPEG4:
+        if (CONFIG_MPEG4_ENCODER)
+            ff_mpeg4_encode_mb(s, s->block, motion_x, motion_y);
+        break;
+    case AV_CODEC_ID_MSMPEG4V2:
+    case AV_CODEC_ID_MSMPEG4V3:
+    case AV_CODEC_ID_WMV1:
+        if (CONFIG_MSMPEG4_ENCODER)
+            ff_msmpeg4_encode_mb(s, s->block, motion_x, motion_y);
+        break;
+    case AV_CODEC_ID_WMV2:
+        if (CONFIG_WMV2_ENCODER)
+            ff_wmv2_encode_mb(s, s->block, motion_x, motion_y);
+        break;
+    case AV_CODEC_ID_H261:
+        if (CONFIG_H261_ENCODER)
+            ff_h261_encode_mb(s, s->block, motion_x, motion_y);
+        break;
+    case AV_CODEC_ID_H263:
+    case AV_CODEC_ID_H263P:
+    case AV_CODEC_ID_FLV1:
+    case AV_CODEC_ID_RV10:
+    case AV_CODEC_ID_RV20:
+        if (CONFIG_H263_ENCODER)
+            ff_h263_encode_mb(s, s->block, motion_x, motion_y);
+        break;
+    case AV_CODEC_ID_MJPEG:
+    case AV_CODEC_ID_AMV:
+        if (CONFIG_MJPEG_ENCODER)
+            ff_mjpeg_encode_mb(s, s->block);
+        break;
+    default:
+        av_assert1(0);
+    }
+}
+
+static av_always_inline void encode_mb(MpegEncContext *s, int motion_x, int motion_y)
+{
+    if (s->chroma_format == CHROMA_420) encode_mb_internal(s, motion_x, motion_y,  8, 8, 6);
+    else if (s->chroma_format == CHROMA_422) encode_mb_internal(s, motion_x, motion_y, 16, 8, 8);
+    else encode_mb_internal(s, motion_x, motion_y, 16, 16, 12);
+}
+
+static inline void copy_context_before_encode(MpegEncContext *d, MpegEncContext *s, int type){
+    int i;
+
+    memcpy(d->last_mv, s->last_mv, 2*2*2*sizeof(int)); //FIXME is memcpy faster than a loop?
+
+    /* mpeg1 */
+    d->mb_skip_run= s->mb_skip_run;
+    for(i=0; i<3; i++)
+        d->last_dc[i] = s->last_dc[i];
+
+    /* statistics */
+    d->mv_bits= s->mv_bits;
+    d->i_tex_bits= s->i_tex_bits;
+    d->p_tex_bits= s->p_tex_bits;
+    d->i_count= s->i_count;
+    d->f_count= s->f_count;
+    d->b_count= s->b_count;
+    d->skip_count= s->skip_count;
+    d->misc_bits= s->misc_bits;
+    d->last_bits= 0;
+
+    d->mb_skipped= 0;
+    d->qscale= s->qscale;
+    d->dquant= s->dquant;
+
+    d->esc3_level_length= s->esc3_level_length;
+}
+
+static inline void copy_context_after_encode(MpegEncContext *d, MpegEncContext *s, int type){
+    int i;
+
+    memcpy(d->mv, s->mv, 2*4*2*sizeof(int));
+    memcpy(d->last_mv, s->last_mv, 2*2*2*sizeof(int)); //FIXME is memcpy faster than a loop?
+
+    /* mpeg1 */
+    d->mb_skip_run= s->mb_skip_run;
+    for(i=0; i<3; i++)
+        d->last_dc[i] = s->last_dc[i];
+
+    /* statistics */
+    d->mv_bits= s->mv_bits;
+    d->i_tex_bits= s->i_tex_bits;
+    d->p_tex_bits= s->p_tex_bits;
+    d->i_count= s->i_count;
+    d->f_count= s->f_count;
+    d->b_count= s->b_count;
+    d->skip_count= s->skip_count;
+    d->misc_bits= s->misc_bits;
+
+    d->mb_intra= s->mb_intra;
+    d->mb_skipped= s->mb_skipped;
+    d->mv_type= s->mv_type;
+    d->mv_dir= s->mv_dir;
+    d->pb= s->pb;
+    if(s->data_partitioning){
+        d->pb2= s->pb2;
+        d->tex_pb= s->tex_pb;
+    }
+    d->block= s->block;
+    for(i=0; i<8; i++)
+        d->block_last_index[i]= s->block_last_index[i];
+    d->interlaced_dct= s->interlaced_dct;
+    d->qscale= s->qscale;
+
+    d->esc3_level_length= s->esc3_level_length;
+}
+
+static inline void encode_mb_hq(MpegEncContext *s, MpegEncContext *backup, MpegEncContext *best, int type,
+                           PutBitContext pb[2], PutBitContext pb2[2], PutBitContext tex_pb[2],
+                           int *dmin, int *next_block, int motion_x, int motion_y)
+{
+    int score;
+    uint8_t *dest_backup[3];
+
+    copy_context_before_encode(s, backup, type);
+
+    s->block= s->blocks[*next_block];
+    s->pb= pb[*next_block];
+    if(s->data_partitioning){
+        s->pb2   = pb2   [*next_block];
+        s->tex_pb= tex_pb[*next_block];
+    }
+
+    if(*next_block){
+        memcpy(dest_backup, s->dest, sizeof(s->dest));
+        s->dest[0] = s->rd_scratchpad;
+        s->dest[1] = s->rd_scratchpad + 16*s->linesize;
+        s->dest[2] = s->rd_scratchpad + 16*s->linesize + 8;
+        assert(s->linesize >= 32); //FIXME
+    }
+
+    encode_mb(s, motion_x, motion_y);
+
+    score= put_bits_count(&s->pb);
+    if(s->data_partitioning){
+        score+= put_bits_count(&s->pb2);
+        score+= put_bits_count(&s->tex_pb);
+    }
+
+    if(s->avctx->mb_decision == FF_MB_DECISION_RD){
+        ff_MPV_decode_mb(s, s->block);
+
+        score *= s->lambda2;
+        score += sse_mb(s) << FF_LAMBDA_SHIFT;
+    }
+
+    if(*next_block){
+        memcpy(s->dest, dest_backup, sizeof(s->dest));
+    }
+
+    if(score<*dmin){
+        *dmin= score;
+        *next_block^=1;
+
+        copy_context_after_encode(best, s, type);
+    }
+}
+
+static int sse(MpegEncContext *s, uint8_t *src1, uint8_t *src2, int w, int h, int stride){
+    uint32_t *sq = ff_squareTbl + 256;
+    int acc=0;
+    int x,y;
+
+    if(w==16 && h==16)
+        return s->dsp.sse[0](NULL, src1, src2, stride, 16);
+    else if(w==8 && h==8)
+        return s->dsp.sse[1](NULL, src1, src2, stride, 8);
+
+    for(y=0; y<h; y++){
+        for(x=0; x<w; x++){
+            acc+= sq[src1[x + y*stride] - src2[x + y*stride]];
+        }
+    }
+
+    av_assert2(acc>=0);
+
+    return acc;
+}
+
+static int sse_mb(MpegEncContext *s){
+    int w= 16;
+    int h= 16;
+
+    if(s->mb_x*16 + 16 > s->width ) w= s->width - s->mb_x*16;
+    if(s->mb_y*16 + 16 > s->height) h= s->height- s->mb_y*16;
+
+    if(w==16 && h==16)
+      if(s->avctx->mb_cmp == FF_CMP_NSSE){
+        return  s->dsp.nsse[0](s, s->new_picture.f.data[0] + s->mb_x*16 + s->mb_y*s->linesize*16, s->dest[0], s->linesize, 16)
+               +s->dsp.nsse[1](s, s->new_picture.f.data[1] + s->mb_x*8  + s->mb_y*s->uvlinesize*8,s->dest[1], s->uvlinesize, 8)
+               +s->dsp.nsse[1](s, s->new_picture.f.data[2] + s->mb_x*8  + s->mb_y*s->uvlinesize*8,s->dest[2], s->uvlinesize, 8);
+      }else{
+        return  s->dsp.sse[0](NULL, s->new_picture.f.data[0] + s->mb_x*16 + s->mb_y*s->linesize*16, s->dest[0], s->linesize, 16)
+               +s->dsp.sse[1](NULL, s->new_picture.f.data[1] + s->mb_x*8  + s->mb_y*s->uvlinesize*8,s->dest[1], s->uvlinesize, 8)
+               +s->dsp.sse[1](NULL, s->new_picture.f.data[2] + s->mb_x*8  + s->mb_y*s->uvlinesize*8,s->dest[2], s->uvlinesize, 8);
+      }
+    else
+        return  sse(s, s->new_picture.f.data[0] + s->mb_x*16 + s->mb_y*s->linesize*16, s->dest[0], w, h, s->linesize)
+               +sse(s, s->new_picture.f.data[1] + s->mb_x*8  + s->mb_y*s->uvlinesize*8,s->dest[1], w>>1, h>>1, s->uvlinesize)
+               +sse(s, s->new_picture.f.data[2] + s->mb_x*8  + s->mb_y*s->uvlinesize*8,s->dest[2], w>>1, h>>1, s->uvlinesize);
+}
+
+static int pre_estimate_motion_thread(AVCodecContext *c, void *arg){
+    MpegEncContext *s= *(void**)arg;
+
+
+    s->me.pre_pass=1;
+    s->me.dia_size= s->avctx->pre_dia_size;
+    s->first_slice_line=1;
+    for(s->mb_y= s->end_mb_y-1; s->mb_y >= s->start_mb_y; s->mb_y--) {
+        for(s->mb_x=s->mb_width-1; s->mb_x >=0 ;s->mb_x--) {
+            ff_pre_estimate_p_frame_motion(s, s->mb_x, s->mb_y);
+        }
+        s->first_slice_line=0;
+    }
+
+    s->me.pre_pass=0;
+
+    return 0;
+}
+
+static int estimate_motion_thread(AVCodecContext *c, void *arg){
+    MpegEncContext *s= *(void**)arg;
+
+    ff_check_alignment();
+
+    s->me.dia_size= s->avctx->dia_size;
+    s->first_slice_line=1;
+    for(s->mb_y= s->start_mb_y; s->mb_y < s->end_mb_y; s->mb_y++) {
+        s->mb_x=0; //for block init below
+        ff_init_block_index(s);
+        for(s->mb_x=0; s->mb_x < s->mb_width; s->mb_x++) {
+            s->block_index[0]+=2;
+            s->block_index[1]+=2;
+            s->block_index[2]+=2;
+            s->block_index[3]+=2;
+
+            /* compute motion vector & mb_type and store in context */
+            if(s->pict_type==AV_PICTURE_TYPE_B)
+                ff_estimate_b_frame_motion(s, s->mb_x, s->mb_y);
+            else
+                ff_estimate_p_frame_motion(s, s->mb_x, s->mb_y);
+        }
+        s->first_slice_line=0;
+    }
+    return 0;
+}
+
+static int mb_var_thread(AVCodecContext *c, void *arg){
+    MpegEncContext *s= *(void**)arg;
+    int mb_x, mb_y;
+
+    ff_check_alignment();
+
+    for(mb_y=s->start_mb_y; mb_y < s->end_mb_y; mb_y++) {
+        for(mb_x=0; mb_x < s->mb_width; mb_x++) {
+            int xx = mb_x * 16;
+            int yy = mb_y * 16;
+            uint8_t *pix = s->new_picture.f.data[0] + (yy * s->linesize) + xx;
+            int varc;
+            int sum = s->dsp.pix_sum(pix, s->linesize);
+
+            varc = (s->dsp.pix_norm1(pix, s->linesize) - (((unsigned)sum*sum)>>8) + 500 + 128)>>8;
+
+            s->current_picture.mb_var [s->mb_stride * mb_y + mb_x] = varc;
+            s->current_picture.mb_mean[s->mb_stride * mb_y + mb_x] = (sum+128)>>8;
+            s->me.mb_var_sum_temp    += varc;
+        }
+    }
+    return 0;
+}
+
+static void write_slice_end(MpegEncContext *s){
+    if(CONFIG_MPEG4_ENCODER && s->codec_id==AV_CODEC_ID_MPEG4){
+        if(s->partitioned_frame){
+            ff_mpeg4_merge_partitions(s);
+        }
+
+        ff_mpeg4_stuffing(&s->pb);
+    }else if(CONFIG_MJPEG_ENCODER && s->out_format == FMT_MJPEG){
+        ff_mjpeg_encode_stuffing(s);
+    }
+
+    avpriv_align_put_bits(&s->pb);
+    flush_put_bits(&s->pb);
+
+    if((s->flags&CODEC_FLAG_PASS1) && !s->partitioned_frame)
+        s->misc_bits+= get_bits_diff(s);
+}
+
+static void write_mb_info(MpegEncContext *s)
+{
+    uint8_t *ptr = s->mb_info_ptr + s->mb_info_size - 12;
+    int offset = put_bits_count(&s->pb);
+    int mba  = s->mb_x + s->mb_width * (s->mb_y % s->gob_index);
+    int gobn = s->mb_y / s->gob_index;
+    int pred_x, pred_y;
+    if (CONFIG_H263_ENCODER)
+        ff_h263_pred_motion(s, 0, 0, &pred_x, &pred_y);
+    bytestream_put_le32(&ptr, offset);
+    bytestream_put_byte(&ptr, s->qscale);
+    bytestream_put_byte(&ptr, gobn);
+    bytestream_put_le16(&ptr, mba);
+    bytestream_put_byte(&ptr, pred_x); /* hmv1 */
+    bytestream_put_byte(&ptr, pred_y); /* vmv1 */
+    /* 4MV not implemented */
+    bytestream_put_byte(&ptr, 0); /* hmv2 */
+    bytestream_put_byte(&ptr, 0); /* vmv2 */
+}
+
+static void update_mb_info(MpegEncContext *s, int startcode)
+{
+    if (!s->mb_info)
+        return;
+    if (put_bits_count(&s->pb) - s->prev_mb_info*8 >= s->mb_info*8) {
+        s->mb_info_size += 12;
+        s->prev_mb_info = s->last_mb_info;
+    }
+    if (startcode) {
+        s->prev_mb_info = put_bits_count(&s->pb)/8;
+        /* This might have incremented mb_info_size above, and we return without
+         * actually writing any info into that slot yet. But in that case,
+         * this will be called again at the start of the after writing the
+         * start code, actually writing the mb info. */
+        return;
+    }
+
+    s->last_mb_info = put_bits_count(&s->pb)/8;
+    if (!s->mb_info_size)
+        s->mb_info_size += 12;
+    write_mb_info(s);
+}
+
+static int encode_thread(AVCodecContext *c, void *arg){
+    MpegEncContext *s= *(void**)arg;
+    int mb_x, mb_y, pdif = 0;
+    int chr_h= 16>>s->chroma_y_shift;
+    int i, j;
+    MpegEncContext best_s, backup_s;
+    uint8_t bit_buf[2][MAX_MB_BYTES];
+    uint8_t bit_buf2[2][MAX_MB_BYTES];
+    uint8_t bit_buf_tex[2][MAX_MB_BYTES];
+    PutBitContext pb[2], pb2[2], tex_pb[2];
+
+    ff_check_alignment();
+
+    for(i=0; i<2; i++){
+        init_put_bits(&pb    [i], bit_buf    [i], MAX_MB_BYTES);
+        init_put_bits(&pb2   [i], bit_buf2   [i], MAX_MB_BYTES);
+        init_put_bits(&tex_pb[i], bit_buf_tex[i], MAX_MB_BYTES);
+    }
+
+    s->last_bits= put_bits_count(&s->pb);
+    s->mv_bits=0;
+    s->misc_bits=0;
+    s->i_tex_bits=0;
+    s->p_tex_bits=0;
+    s->i_count=0;
+    s->f_count=0;
+    s->b_count=0;
+    s->skip_count=0;
+
+    for(i=0; i<3; i++){
+        /* init last dc values */
+        /* note: quant matrix value (8) is implied here */
+        s->last_dc[i] = 128 << s->intra_dc_precision;
+
+        s->current_picture.f.error[i] = 0;
+    }
+    if(s->codec_id==AV_CODEC_ID_AMV){
+        s->last_dc[0] = 128*8/13;
+        s->last_dc[1] = 128*8/14;
+        s->last_dc[2] = 128*8/14;
+    }
+    s->mb_skip_run = 0;
+    memset(s->last_mv, 0, sizeof(s->last_mv));
+
+    s->last_mv_dir = 0;
+
+    switch(s->codec_id){
+    case AV_CODEC_ID_H263:
+    case AV_CODEC_ID_H263P:
+    case AV_CODEC_ID_FLV1:
+        if (CONFIG_H263_ENCODER)
+            s->gob_index = ff_h263_get_gob_height(s);
+        break;
+    case AV_CODEC_ID_MPEG4:
+        if(CONFIG_MPEG4_ENCODER && s->partitioned_frame)
+            ff_mpeg4_init_partitions(s);
+        break;
+    }
+
+    s->resync_mb_x=0;
+    s->resync_mb_y=0;
+    s->first_slice_line = 1;
+    s->ptr_lastgob = s->pb.buf;
+    for(mb_y= s->start_mb_y; mb_y < s->end_mb_y; mb_y++) {
+        s->mb_x=0;
+        s->mb_y= mb_y;
+
+        ff_set_qscale(s, s->qscale);
+        ff_init_block_index(s);
+
+        for(mb_x=0; mb_x < s->mb_width; mb_x++) {
+            int xy= mb_y*s->mb_stride + mb_x; // removed const, H261 needs to adjust this
+            int mb_type= s->mb_type[xy];
+//            int d;
+            int dmin= INT_MAX;
+            int dir;
+
+            if(s->pb.buf_end - s->pb.buf - (put_bits_count(&s->pb)>>3) < MAX_MB_BYTES){
+                av_log(s->avctx, AV_LOG_ERROR, "encoded frame too large\n");
+                return -1;
+            }
+            if(s->data_partitioning){
+                if(   s->pb2   .buf_end - s->pb2   .buf - (put_bits_count(&s->    pb2)>>3) < MAX_MB_BYTES
+                   || s->tex_pb.buf_end - s->tex_pb.buf - (put_bits_count(&s->tex_pb )>>3) < MAX_MB_BYTES){
+                    av_log(s->avctx, AV_LOG_ERROR, "encoded partitioned frame too large\n");
+                    return -1;
+                }
+            }
+
+            s->mb_x = mb_x;
+            s->mb_y = mb_y;  // moved into loop, can get changed by H.261
+            ff_update_block_index(s);
+
+            if(CONFIG_H261_ENCODER && s->codec_id == AV_CODEC_ID_H261){
+                ff_h261_reorder_mb_index(s);
+                xy= s->mb_y*s->mb_stride + s->mb_x;
+                mb_type= s->mb_type[xy];
+            }
+
+            /* write gob / video packet header  */
+            if(s->rtp_mode){
+                int current_packet_size, is_gob_start;
+
+                current_packet_size= ((put_bits_count(&s->pb)+7)>>3) - (s->ptr_lastgob - s->pb.buf);
+
+                is_gob_start= s->avctx->rtp_payload_size && current_packet_size >= s->avctx->rtp_payload_size && mb_y + mb_x>0;
+
+                if(s->start_mb_y == mb_y && mb_y > 0 && mb_x==0) is_gob_start=1;
+
+                switch(s->codec_id){
+                case AV_CODEC_ID_H263:
+                case AV_CODEC_ID_H263P:
+                    if(!s->h263_slice_structured)
+                        if(s->mb_x || s->mb_y%s->gob_index) is_gob_start=0;
+                    break;
+                case AV_CODEC_ID_MPEG2VIDEO:
+                    if(s->mb_x==0 && s->mb_y!=0) is_gob_start=1;
+                case AV_CODEC_ID_MPEG1VIDEO:
+                    if(s->mb_skip_run) is_gob_start=0;
+                    break;
+                case AV_CODEC_ID_MJPEG:
+                    if(s->mb_x==0 && s->mb_y!=0) is_gob_start=1;
+                    break;
+                }
+
+                if(is_gob_start){
+                    if(s->start_mb_y != mb_y || mb_x!=0){
+                        write_slice_end(s);
+                        if(CONFIG_MPEG4_ENCODER && s->codec_id==AV_CODEC_ID_MPEG4 && s->partitioned_frame){
+                            ff_mpeg4_init_partitions(s);
+                        }
+                    }
+
+                    av_assert2((put_bits_count(&s->pb)&7) == 0);
+                    current_packet_size= put_bits_ptr(&s->pb) - s->ptr_lastgob;
+
+                    if(s->avctx->error_rate && s->resync_mb_x + s->resync_mb_y > 0){
+                        int r= put_bits_count(&s->pb)/8 + s->picture_number + 16 + s->mb_x + s->mb_y;
+                        int d= 100 / s->avctx->error_rate;
+                        if(r % d == 0){
+                            current_packet_size=0;
+                            s->pb.buf_ptr= s->ptr_lastgob;
+                            assert(put_bits_ptr(&s->pb) == s->ptr_lastgob);
+                        }
+                    }
+
+                    if (s->avctx->rtp_callback){
+                        int number_mb = (mb_y - s->resync_mb_y)*s->mb_width + mb_x - s->resync_mb_x;
+                        s->avctx->rtp_callback(s->avctx, s->ptr_lastgob, current_packet_size, number_mb);
+                    }
+                    update_mb_info(s, 1);
+
+                    switch(s->codec_id){
+                    case AV_CODEC_ID_MPEG4:
+                        if (CONFIG_MPEG4_ENCODER) {
+                            ff_mpeg4_encode_video_packet_header(s);
+                            ff_mpeg4_clean_buffers(s);
+                        }
+                    break;
+                    case AV_CODEC_ID_MPEG1VIDEO:
+                    case AV_CODEC_ID_MPEG2VIDEO:
+                        if (CONFIG_MPEG1VIDEO_ENCODER || CONFIG_MPEG2VIDEO_ENCODER) {
+                            ff_mpeg1_encode_slice_header(s);
+                            ff_mpeg1_clean_buffers(s);
+                        }
+                    break;
+                    case AV_CODEC_ID_H263:
+                    case AV_CODEC_ID_H263P:
+                        if (CONFIG_H263_ENCODER)
+                            ff_h263_encode_gob_header(s, mb_y);
+                    break;
+                    }
+
+                    if(s->flags&CODEC_FLAG_PASS1){
+                        int bits= put_bits_count(&s->pb);
+                        s->misc_bits+= bits - s->last_bits;
+                        s->last_bits= bits;
+                    }
+
+                    s->ptr_lastgob += current_packet_size;
+                    s->first_slice_line=1;
+                    s->resync_mb_x=mb_x;
+                    s->resync_mb_y=mb_y;
+                }
+            }
+
+            if(  (s->resync_mb_x   == s->mb_x)
+               && s->resync_mb_y+1 == s->mb_y){
+                s->first_slice_line=0;
+            }
+
+            s->mb_skipped=0;
+            s->dquant=0; //only for QP_RD
+
+            update_mb_info(s, 0);
+
+            if (mb_type & (mb_type-1) || (s->mpv_flags & FF_MPV_FLAG_QP_RD)) { // more than 1 MB type possible or FF_MPV_FLAG_QP_RD
+                int next_block=0;
+                int pb_bits_count, pb2_bits_count, tex_pb_bits_count;
+
+                copy_context_before_encode(&backup_s, s, -1);
+                backup_s.pb= s->pb;
+                best_s.data_partitioning= s->data_partitioning;
+                best_s.partitioned_frame= s->partitioned_frame;
+                if(s->data_partitioning){
+                    backup_s.pb2= s->pb2;
+                    backup_s.tex_pb= s->tex_pb;
+                }
+
+                if(mb_type&CANDIDATE_MB_TYPE_INTER){
+                    s->mv_dir = MV_DIR_FORWARD;
+                    s->mv_type = MV_TYPE_16X16;
+                    s->mb_intra= 0;
+                    s->mv[0][0][0] = s->p_mv_table[xy][0];
+                    s->mv[0][0][1] = s->p_mv_table[xy][1];
+                    encode_mb_hq(s, &backup_s, &best_s, CANDIDATE_MB_TYPE_INTER, pb, pb2, tex_pb,
+                                 &dmin, &next_block, s->mv[0][0][0], s->mv[0][0][1]);
+                }
+                if(mb_type&CANDIDATE_MB_TYPE_INTER_I){
+                    s->mv_dir = MV_DIR_FORWARD;
+                    s->mv_type = MV_TYPE_FIELD;
+                    s->mb_intra= 0;
+                    for(i=0; i<2; i++){
+                        j= s->field_select[0][i] = s->p_field_select_table[i][xy];
+                        s->mv[0][i][0] = s->p_field_mv_table[i][j][xy][0];
+                        s->mv[0][i][1] = s->p_field_mv_table[i][j][xy][1];
+                    }
+                    encode_mb_hq(s, &backup_s, &best_s, CANDIDATE_MB_TYPE_INTER_I, pb, pb2, tex_pb,
+                                 &dmin, &next_block, 0, 0);
+                }
+                if(mb_type&CANDIDATE_MB_TYPE_SKIPPED){
+                    s->mv_dir = MV_DIR_FORWARD;
+                    s->mv_type = MV_TYPE_16X16;
+                    s->mb_intra= 0;
+                    s->mv[0][0][0] = 0;
+                    s->mv[0][0][1] = 0;
+                    encode_mb_hq(s, &backup_s, &best_s, CANDIDATE_MB_TYPE_SKIPPED, pb, pb2, tex_pb,
+                                 &dmin, &next_block, s->mv[0][0][0], s->mv[0][0][1]);
+                }
+                if(mb_type&CANDIDATE_MB_TYPE_INTER4V){
+                    s->mv_dir = MV_DIR_FORWARD;
+                    s->mv_type = MV_TYPE_8X8;
+                    s->mb_intra= 0;
+                    for(i=0; i<4; i++){
+                        s->mv[0][i][0] = s->current_picture.motion_val[0][s->block_index[i]][0];
+                        s->mv[0][i][1] = s->current_picture.motion_val[0][s->block_index[i]][1];
+                    }
+                    encode_mb_hq(s, &backup_s, &best_s, CANDIDATE_MB_TYPE_INTER4V, pb, pb2, tex_pb,
+                                 &dmin, &next_block, 0, 0);
+                }
+                if(mb_type&CANDIDATE_MB_TYPE_FORWARD){
+                    s->mv_dir = MV_DIR_FORWARD;
+                    s->mv_type = MV_TYPE_16X16;
+                    s->mb_intra= 0;
+                    s->mv[0][0][0] = s->b_forw_mv_table[xy][0];
+                    s->mv[0][0][1] = s->b_forw_mv_table[xy][1];
+                    encode_mb_hq(s, &backup_s, &best_s, CANDIDATE_MB_TYPE_FORWARD, pb, pb2, tex_pb,
+                                 &dmin, &next_block, s->mv[0][0][0], s->mv[0][0][1]);
+                }
+                if(mb_type&CANDIDATE_MB_TYPE_BACKWARD){
+                    s->mv_dir = MV_DIR_BACKWARD;
+                    s->mv_type = MV_TYPE_16X16;
+                    s->mb_intra= 0;
+                    s->mv[1][0][0] = s->b_back_mv_table[xy][0];
+                    s->mv[1][0][1] = s->b_back_mv_table[xy][1];
+                    encode_mb_hq(s, &backup_s, &best_s, CANDIDATE_MB_TYPE_BACKWARD, pb, pb2, tex_pb,
+                                 &dmin, &next_block, s->mv[1][0][0], s->mv[1][0][1]);
+                }
+                if(mb_type&CANDIDATE_MB_TYPE_BIDIR){
+                    s->mv_dir = MV_DIR_FORWARD | MV_DIR_BACKWARD;
+                    s->mv_type = MV_TYPE_16X16;
+                    s->mb_intra= 0;
+                    s->mv[0][0][0] = s->b_bidir_forw_mv_table[xy][0];
+                    s->mv[0][0][1] = s->b_bidir_forw_mv_table[xy][1];
+                    s->mv[1][0][0] = s->b_bidir_back_mv_table[xy][0];
+                    s->mv[1][0][1] = s->b_bidir_back_mv_table[xy][1];
+                    encode_mb_hq(s, &backup_s, &best_s, CANDIDATE_MB_TYPE_BIDIR, pb, pb2, tex_pb,
+                                 &dmin, &next_block, 0, 0);
+                }
+                if(mb_type&CANDIDATE_MB_TYPE_FORWARD_I){
+                    s->mv_dir = MV_DIR_FORWARD;
+                    s->mv_type = MV_TYPE_FIELD;
+                    s->mb_intra= 0;
+                    for(i=0; i<2; i++){
+                        j= s->field_select[0][i] = s->b_field_select_table[0][i][xy];
+                        s->mv[0][i][0] = s->b_field_mv_table[0][i][j][xy][0];
+                        s->mv[0][i][1] = s->b_field_mv_table[0][i][j][xy][1];
+                    }
+                    encode_mb_hq(s, &backup_s, &best_s, CANDIDATE_MB_TYPE_FORWARD_I, pb, pb2, tex_pb,
+                                 &dmin, &next_block, 0, 0);
+                }
+                if(mb_type&CANDIDATE_MB_TYPE_BACKWARD_I){
+                    s->mv_dir = MV_DIR_BACKWARD;
+                    s->mv_type = MV_TYPE_FIELD;
+                    s->mb_intra= 0;
+                    for(i=0; i<2; i++){
+                        j= s->field_select[1][i] = s->b_field_select_table[1][i][xy];
+                        s->mv[1][i][0] = s->b_field_mv_table[1][i][j][xy][0];
+                        s->mv[1][i][1] = s->b_field_mv_table[1][i][j][xy][1];
+                    }
+                    encode_mb_hq(s, &backup_s, &best_s, CANDIDATE_MB_TYPE_BACKWARD_I, pb, pb2, tex_pb,
+                                 &dmin, &next_block, 0, 0);
+                }
+                if(mb_type&CANDIDATE_MB_TYPE_BIDIR_I){
+                    s->mv_dir = MV_DIR_FORWARD | MV_DIR_BACKWARD;
+                    s->mv_type = MV_TYPE_FIELD;
+                    s->mb_intra= 0;
+                    for(dir=0; dir<2; dir++){
+                        for(i=0; i<2; i++){
+                            j= s->field_select[dir][i] = s->b_field_select_table[dir][i][xy];
+                            s->mv[dir][i][0] = s->b_field_mv_table[dir][i][j][xy][0];
+                            s->mv[dir][i][1] = s->b_field_mv_table[dir][i][j][xy][1];
+                        }
+                    }
+                    encode_mb_hq(s, &backup_s, &best_s, CANDIDATE_MB_TYPE_BIDIR_I, pb, pb2, tex_pb,
+                                 &dmin, &next_block, 0, 0);
+                }
+                if(mb_type&CANDIDATE_MB_TYPE_INTRA){
+                    s->mv_dir = 0;
+                    s->mv_type = MV_TYPE_16X16;
+                    s->mb_intra= 1;
+                    s->mv[0][0][0] = 0;
+                    s->mv[0][0][1] = 0;
+                    encode_mb_hq(s, &backup_s, &best_s, CANDIDATE_MB_TYPE_INTRA, pb, pb2, tex_pb,
+                                 &dmin, &next_block, 0, 0);
+                    if(s->h263_pred || s->h263_aic){
+                        if(best_s.mb_intra)
+                            s->mbintra_table[mb_x + mb_y*s->mb_stride]=1;
+                        else
+                            ff_clean_intra_table_entries(s); //old mode?
+                    }
+                }
+
+                if ((s->mpv_flags & FF_MPV_FLAG_QP_RD) && dmin < INT_MAX) {
+                    if(best_s.mv_type==MV_TYPE_16X16){ //FIXME move 4mv after QPRD
+                        const int last_qp= backup_s.qscale;
+                        int qpi, qp, dc[6];
+                        int16_t ac[6][16];
+                        const int mvdir= (best_s.mv_dir&MV_DIR_BACKWARD) ? 1 : 0;
+                        static const int dquant_tab[4]={-1,1,-2,2};
+                        int storecoefs = s->mb_intra && s->dc_val[0];
+
+                        av_assert2(backup_s.dquant == 0);
+
+                        //FIXME intra
+                        s->mv_dir= best_s.mv_dir;
+                        s->mv_type = MV_TYPE_16X16;
+                        s->mb_intra= best_s.mb_intra;
+                        s->mv[0][0][0] = best_s.mv[0][0][0];
+                        s->mv[0][0][1] = best_s.mv[0][0][1];
+                        s->mv[1][0][0] = best_s.mv[1][0][0];
+                        s->mv[1][0][1] = best_s.mv[1][0][1];
+
+                        qpi = s->pict_type == AV_PICTURE_TYPE_B ? 2 : 0;
+                        for(; qpi<4; qpi++){
+                            int dquant= dquant_tab[qpi];
+                            qp= last_qp + dquant;
+                            if(qp < s->avctx->qmin || qp > s->avctx->qmax)
+                                continue;
+                            backup_s.dquant= dquant;
+                            if(storecoefs){
+                                for(i=0; i<6; i++){
+                                    dc[i]= s->dc_val[0][ s->block_index[i] ];
+                                    memcpy(ac[i], s->ac_val[0][s->block_index[i]], sizeof(int16_t)*16);
+                                }
+                            }
+
+                            encode_mb_hq(s, &backup_s, &best_s, CANDIDATE_MB_TYPE_INTER /* wrong but unused */, pb, pb2, tex_pb,
+                                         &dmin, &next_block, s->mv[mvdir][0][0], s->mv[mvdir][0][1]);
+                            if(best_s.qscale != qp){
+                                if(storecoefs){
+                                    for(i=0; i<6; i++){
+                                        s->dc_val[0][ s->block_index[i] ]= dc[i];
+                                        memcpy(s->ac_val[0][s->block_index[i]], ac[i], sizeof(int16_t)*16);
+                                    }
+                                }
+                            }
+                        }
+                    }
+                }
+                if(CONFIG_MPEG4_ENCODER && mb_type&CANDIDATE_MB_TYPE_DIRECT){
+                    int mx= s->b_direct_mv_table[xy][0];
+                    int my= s->b_direct_mv_table[xy][1];
+
+                    backup_s.dquant = 0;
+                    s->mv_dir = MV_DIR_FORWARD | MV_DIR_BACKWARD | MV_DIRECT;
+                    s->mb_intra= 0;
+                    ff_mpeg4_set_direct_mv(s, mx, my);
+                    encode_mb_hq(s, &backup_s, &best_s, CANDIDATE_MB_TYPE_DIRECT, pb, pb2, tex_pb,
+                                 &dmin, &next_block, mx, my);
+                }
+                if(CONFIG_MPEG4_ENCODER && mb_type&CANDIDATE_MB_TYPE_DIRECT0){
+                    backup_s.dquant = 0;
+                    s->mv_dir = MV_DIR_FORWARD | MV_DIR_BACKWARD | MV_DIRECT;
+                    s->mb_intra= 0;
+                    ff_mpeg4_set_direct_mv(s, 0, 0);
+                    encode_mb_hq(s, &backup_s, &best_s, CANDIDATE_MB_TYPE_DIRECT, pb, pb2, tex_pb,
+                                 &dmin, &next_block, 0, 0);
+                }
+                if (!best_s.mb_intra && s->mpv_flags & FF_MPV_FLAG_SKIP_RD) {
+                    int coded=0;
+                    for(i=0; i<6; i++)
+                        coded |= s->block_last_index[i];
+                    if(coded){
+                        int mx,my;
+                        memcpy(s->mv, best_s.mv, sizeof(s->mv));
+                        if(CONFIG_MPEG4_ENCODER && best_s.mv_dir & MV_DIRECT){
+                            mx=my=0; //FIXME find the one we actually used
+                            ff_mpeg4_set_direct_mv(s, mx, my);
+                        }else if(best_s.mv_dir&MV_DIR_BACKWARD){
+                            mx= s->mv[1][0][0];
+                            my= s->mv[1][0][1];
+                        }else{
+                            mx= s->mv[0][0][0];
+                            my= s->mv[0][0][1];
+                        }
+
+                        s->mv_dir= best_s.mv_dir;
+                        s->mv_type = best_s.mv_type;
+                        s->mb_intra= 0;
+/*                        s->mv[0][0][0] = best_s.mv[0][0][0];
+                        s->mv[0][0][1] = best_s.mv[0][0][1];
+                        s->mv[1][0][0] = best_s.mv[1][0][0];
+                        s->mv[1][0][1] = best_s.mv[1][0][1];*/
+                        backup_s.dquant= 0;
+                        s->skipdct=1;
+                        encode_mb_hq(s, &backup_s, &best_s, CANDIDATE_MB_TYPE_INTER /* wrong but unused */, pb, pb2, tex_pb,
+                                        &dmin, &next_block, mx, my);
+                        s->skipdct=0;
+                    }
+                }
+
+                s->current_picture.qscale_table[xy] = best_s.qscale;
+
+                copy_context_after_encode(s, &best_s, -1);
+
+                pb_bits_count= put_bits_count(&s->pb);
+                flush_put_bits(&s->pb);
+                avpriv_copy_bits(&backup_s.pb, bit_buf[next_block^1], pb_bits_count);
+                s->pb= backup_s.pb;
+
+                if(s->data_partitioning){
+                    pb2_bits_count= put_bits_count(&s->pb2);
+                    flush_put_bits(&s->pb2);
+                    avpriv_copy_bits(&backup_s.pb2, bit_buf2[next_block^1], pb2_bits_count);
+                    s->pb2= backup_s.pb2;
+
+                    tex_pb_bits_count= put_bits_count(&s->tex_pb);
+                    flush_put_bits(&s->tex_pb);
+                    avpriv_copy_bits(&backup_s.tex_pb, bit_buf_tex[next_block^1], tex_pb_bits_count);
+                    s->tex_pb= backup_s.tex_pb;
+                }
+                s->last_bits= put_bits_count(&s->pb);
+
+                if (CONFIG_H263_ENCODER &&
+                    s->out_format == FMT_H263 && s->pict_type!=AV_PICTURE_TYPE_B)
+                    ff_h263_update_motion_val(s);
+
+                if(next_block==0){ //FIXME 16 vs linesize16
+                    s->hdsp.put_pixels_tab[0][0](s->dest[0], s->rd_scratchpad                     , s->linesize  ,16);
+                    s->hdsp.put_pixels_tab[1][0](s->dest[1], s->rd_scratchpad + 16*s->linesize    , s->uvlinesize, 8);
+                    s->hdsp.put_pixels_tab[1][0](s->dest[2], s->rd_scratchpad + 16*s->linesize + 8, s->uvlinesize, 8);
+                }
+
+                if(s->avctx->mb_decision == FF_MB_DECISION_BITS)
+                    ff_MPV_decode_mb(s, s->block);
+            } else {
+                int motion_x = 0, motion_y = 0;
+                s->mv_type=MV_TYPE_16X16;
+                // only one MB-Type possible
+
+                switch(mb_type){
+                case CANDIDATE_MB_TYPE_INTRA:
+                    s->mv_dir = 0;
+                    s->mb_intra= 1;
+                    motion_x= s->mv[0][0][0] = 0;
+                    motion_y= s->mv[0][0][1] = 0;
+                    break;
+                case CANDIDATE_MB_TYPE_INTER:
+                    s->mv_dir = MV_DIR_FORWARD;
+                    s->mb_intra= 0;
+                    motion_x= s->mv[0][0][0] = s->p_mv_table[xy][0];
+                    motion_y= s->mv[0][0][1] = s->p_mv_table[xy][1];
+                    break;
+                case CANDIDATE_MB_TYPE_INTER_I:
+                    s->mv_dir = MV_DIR_FORWARD;
+                    s->mv_type = MV_TYPE_FIELD;
+                    s->mb_intra= 0;
+                    for(i=0; i<2; i++){
+                        j= s->field_select[0][i] = s->p_field_select_table[i][xy];
+                        s->mv[0][i][0] = s->p_field_mv_table[i][j][xy][0];
+                        s->mv[0][i][1] = s->p_field_mv_table[i][j][xy][1];
+                    }
+                    break;
+                case CANDIDATE_MB_TYPE_INTER4V:
+                    s->mv_dir = MV_DIR_FORWARD;
+                    s->mv_type = MV_TYPE_8X8;
+                    s->mb_intra= 0;
+                    for(i=0; i<4; i++){
+                        s->mv[0][i][0] = s->current_picture.motion_val[0][s->block_index[i]][0];
+                        s->mv[0][i][1] = s->current_picture.motion_val[0][s->block_index[i]][1];
+                    }
+                    break;
+                case CANDIDATE_MB_TYPE_DIRECT:
+                    if (CONFIG_MPEG4_ENCODER) {
+                        s->mv_dir = MV_DIR_FORWARD|MV_DIR_BACKWARD|MV_DIRECT;
+                        s->mb_intra= 0;
+                        motion_x=s->b_direct_mv_table[xy][0];
+                        motion_y=s->b_direct_mv_table[xy][1];
+                        ff_mpeg4_set_direct_mv(s, motion_x, motion_y);
+                    }
+                    break;
+                case CANDIDATE_MB_TYPE_DIRECT0:
+                    if (CONFIG_MPEG4_ENCODER) {
+                        s->mv_dir = MV_DIR_FORWARD|MV_DIR_BACKWARD|MV_DIRECT;
+                        s->mb_intra= 0;
+                        ff_mpeg4_set_direct_mv(s, 0, 0);
+                    }
+                    break;
+                case CANDIDATE_MB_TYPE_BIDIR:
+                    s->mv_dir = MV_DIR_FORWARD | MV_DIR_BACKWARD;
+                    s->mb_intra= 0;
+                    s->mv[0][0][0] = s->b_bidir_forw_mv_table[xy][0];
+                    s->mv[0][0][1] = s->b_bidir_forw_mv_table[xy][1];
+                    s->mv[1][0][0] = s->b_bidir_back_mv_table[xy][0];
+                    s->mv[1][0][1] = s->b_bidir_back_mv_table[xy][1];
+                    break;
+                case CANDIDATE_MB_TYPE_BACKWARD:
+                    s->mv_dir = MV_DIR_BACKWARD;
+                    s->mb_intra= 0;
+                    motion_x= s->mv[1][0][0] = s->b_back_mv_table[xy][0];
+                    motion_y= s->mv[1][0][1] = s->b_back_mv_table[xy][1];
+                    break;
+                case CANDIDATE_MB_TYPE_FORWARD:
+                    s->mv_dir = MV_DIR_FORWARD;
+                    s->mb_intra= 0;
+                    motion_x= s->mv[0][0][0] = s->b_forw_mv_table[xy][0];
+                    motion_y= s->mv[0][0][1] = s->b_forw_mv_table[xy][1];
+                    break;
+                case CANDIDATE_MB_TYPE_FORWARD_I:
+                    s->mv_dir = MV_DIR_FORWARD;
+                    s->mv_type = MV_TYPE_FIELD;
+                    s->mb_intra= 0;
+                    for(i=0; i<2; i++){
+                        j= s->field_select[0][i] = s->b_field_select_table[0][i][xy];
+                        s->mv[0][i][0] = s->b_field_mv_table[0][i][j][xy][0];
+                        s->mv[0][i][1] = s->b_field_mv_table[0][i][j][xy][1];
+                    }
+                    break;
+                case CANDIDATE_MB_TYPE_BACKWARD_I:
+                    s->mv_dir = MV_DIR_BACKWARD;
+                    s->mv_type = MV_TYPE_FIELD;
+                    s->mb_intra= 0;
+                    for(i=0; i<2; i++){
+                        j= s->field_select[1][i] = s->b_field_select_table[1][i][xy];
+                        s->mv[1][i][0] = s->b_field_mv_table[1][i][j][xy][0];
+                        s->mv[1][i][1] = s->b_field_mv_table[1][i][j][xy][1];
+                    }
+                    break;
+                case CANDIDATE_MB_TYPE_BIDIR_I:
+                    s->mv_dir = MV_DIR_FORWARD | MV_DIR_BACKWARD;
+                    s->mv_type = MV_TYPE_FIELD;
+                    s->mb_intra= 0;
+                    for(dir=0; dir<2; dir++){
+                        for(i=0; i<2; i++){
+                            j= s->field_select[dir][i] = s->b_field_select_table[dir][i][xy];
+                            s->mv[dir][i][0] = s->b_field_mv_table[dir][i][j][xy][0];
+                            s->mv[dir][i][1] = s->b_field_mv_table[dir][i][j][xy][1];
+                        }
+                    }
+                    break;
+                default:
+                    av_log(s->avctx, AV_LOG_ERROR, "illegal MB type\n");
+                }
+
+                encode_mb(s, motion_x, motion_y);
+
+                // RAL: Update last macroblock type
+                s->last_mv_dir = s->mv_dir;
+
+                if (CONFIG_H263_ENCODER &&
+                    s->out_format == FMT_H263 && s->pict_type!=AV_PICTURE_TYPE_B)
+                    ff_h263_update_motion_val(s);
+
+                ff_MPV_decode_mb(s, s->block);
+            }
+
+            /* clean the MV table in IPS frames for direct mode in B frames */
+            if(s->mb_intra /* && I,P,S_TYPE */){
+                s->p_mv_table[xy][0]=0;
+                s->p_mv_table[xy][1]=0;
+            }
+
+            if(s->flags&CODEC_FLAG_PSNR){
+                int w= 16;
+                int h= 16;
+
+                if(s->mb_x*16 + 16 > s->width ) w= s->width - s->mb_x*16;
+                if(s->mb_y*16 + 16 > s->height) h= s->height- s->mb_y*16;
+
+                s->current_picture.f.error[0] += sse(
+                    s, s->new_picture.f.data[0] + s->mb_x*16 + s->mb_y*s->linesize*16,
+                    s->dest[0], w, h, s->linesize);
+                s->current_picture.f.error[1] += sse(
+                    s, s->new_picture.f.data[1] + s->mb_x*8  + s->mb_y*s->uvlinesize*chr_h,
+                    s->dest[1], w>>1, h>>s->chroma_y_shift, s->uvlinesize);
+                s->current_picture.f.error[2] += sse(
+                    s, s->new_picture.f.data[2] + s->mb_x*8  + s->mb_y*s->uvlinesize*chr_h,
+                    s->dest[2], w>>1, h>>s->chroma_y_shift, s->uvlinesize);
+            }
+            if(s->loop_filter){
+                if(CONFIG_H263_ENCODER && s->out_format == FMT_H263)
+                    ff_h263_loop_filter(s);
+            }
+            av_dlog(s->avctx, "MB %d %d bits\n",
+                    s->mb_x + s->mb_y * s->mb_stride, put_bits_count(&s->pb));
+        }
+    }
+
+    //not beautiful here but we must write it before flushing so it has to be here
+    if (CONFIG_MSMPEG4_ENCODER && s->msmpeg4_version && s->msmpeg4_version<4 && s->pict_type == AV_PICTURE_TYPE_I)
+        ff_msmpeg4_encode_ext_header(s);
+
+    write_slice_end(s);
+
+    /* Send the last GOB if RTP */
+    if (s->avctx->rtp_callback) {
+        int number_mb = (mb_y - s->resync_mb_y)*s->mb_width - s->resync_mb_x;
+        pdif = put_bits_ptr(&s->pb) - s->ptr_lastgob;
+        /* Call the RTP callback to send the last GOB */
+        emms_c();
+        s->avctx->rtp_callback(s->avctx, s->ptr_lastgob, pdif, number_mb);
+    }
+
+    return 0;
+}
+
+#define MERGE(field) dst->field += src->field; src->field=0
+static void merge_context_after_me(MpegEncContext *dst, MpegEncContext *src){
+    MERGE(me.scene_change_score);
+    MERGE(me.mc_mb_var_sum_temp);
+    MERGE(me.mb_var_sum_temp);
+}
+
+static void merge_context_after_encode(MpegEncContext *dst, MpegEncContext *src){
+    int i;
+
+    MERGE(dct_count[0]); //note, the other dct vars are not part of the context
+    MERGE(dct_count[1]);
+    MERGE(mv_bits);
+    MERGE(i_tex_bits);
+    MERGE(p_tex_bits);
+    MERGE(i_count);
+    MERGE(f_count);
+    MERGE(b_count);
+    MERGE(skip_count);
+    MERGE(misc_bits);
+    MERGE(er.error_count);
+    MERGE(padding_bug_score);
+    MERGE(current_picture.f.error[0]);
+    MERGE(current_picture.f.error[1]);
+    MERGE(current_picture.f.error[2]);
+
+    if(dst->avctx->noise_reduction){
+        for(i=0; i<64; i++){
+            MERGE(dct_error_sum[0][i]);
+            MERGE(dct_error_sum[1][i]);
+        }
+    }
+
+    assert(put_bits_count(&src->pb) % 8 ==0);
+    assert(put_bits_count(&dst->pb) % 8 ==0);
+    avpriv_copy_bits(&dst->pb, src->pb.buf, put_bits_count(&src->pb));
+    flush_put_bits(&dst->pb);
+}
+
+static int estimate_qp(MpegEncContext *s, int dry_run){
+    if (s->next_lambda){
+        s->current_picture_ptr->f.quality =
+        s->current_picture.f.quality = s->next_lambda;
+        if(!dry_run) s->next_lambda= 0;
+    } else if (!s->fixed_qscale) {
+        s->current_picture_ptr->f.quality =
+        s->current_picture.f.quality = ff_rate_estimate_qscale(s, dry_run);
+        if (s->current_picture.f.quality < 0)
+            return -1;
+    }
+
+    if(s->adaptive_quant){
+        switch(s->codec_id){
+        case AV_CODEC_ID_MPEG4:
+            if (CONFIG_MPEG4_ENCODER)
+                ff_clean_mpeg4_qscales(s);
+            break;
+        case AV_CODEC_ID_H263:
+        case AV_CODEC_ID_H263P:
+        case AV_CODEC_ID_FLV1:
+            if (CONFIG_H263_ENCODER)
+                ff_clean_h263_qscales(s);
+            break;
+        default:
+            ff_init_qscale_tab(s);
+        }
+
+        s->lambda= s->lambda_table[0];
+        //FIXME broken
+    }else
+        s->lambda = s->current_picture.f.quality;
+    update_qscale(s);
+    return 0;
+}
+
+/* must be called before writing the header */
+static void set_frame_distances(MpegEncContext * s){
+    assert(s->current_picture_ptr->f.pts != AV_NOPTS_VALUE);
+    s->time = s->current_picture_ptr->f.pts * s->avctx->time_base.num;
+
+    if(s->pict_type==AV_PICTURE_TYPE_B){
+        s->pb_time= s->pp_time - (s->last_non_b_time - s->time);
+        assert(s->pb_time > 0 && s->pb_time < s->pp_time);
+    }else{
+        s->pp_time= s->time - s->last_non_b_time;
+        s->last_non_b_time= s->time;
+        assert(s->picture_number==0 || s->pp_time > 0);
+    }
+}
+
+static int encode_picture(MpegEncContext *s, int picture_number)
+{
+    int i, ret;
+    int bits;
+    int context_count = s->slice_context_count;
+
+    s->picture_number = picture_number;
+
+    /* Reset the average MB variance */
+    s->me.mb_var_sum_temp    =
+    s->me.mc_mb_var_sum_temp = 0;
+
+    /* we need to initialize some time vars before we can encode b-frames */
+    // RAL: Condition added for MPEG1VIDEO
+    if (s->codec_id == AV_CODEC_ID_MPEG1VIDEO || s->codec_id == AV_CODEC_ID_MPEG2VIDEO || (s->h263_pred && !s->msmpeg4_version))
+        set_frame_distances(s);
+    if(CONFIG_MPEG4_ENCODER && s->codec_id == AV_CODEC_ID_MPEG4)
+        ff_set_mpeg4_time(s);
+
+    s->me.scene_change_score=0;
+
+//    s->lambda= s->current_picture_ptr->quality; //FIXME qscale / ... stuff for ME rate distortion
+
+    if(s->pict_type==AV_PICTURE_TYPE_I){
+        if(s->msmpeg4_version >= 3) s->no_rounding=1;
+        else                        s->no_rounding=0;
+    }else if(s->pict_type!=AV_PICTURE_TYPE_B){
+        if(s->flipflop_rounding || s->codec_id == AV_CODEC_ID_H263P || s->codec_id == AV_CODEC_ID_MPEG4)
+            s->no_rounding ^= 1;
+    }
+
+    if(s->flags & CODEC_FLAG_PASS2){
+        if (estimate_qp(s,1) < 0)
+            return -1;
+        ff_get_2pass_fcode(s);
+    }else if(!(s->flags & CODEC_FLAG_QSCALE)){
+        if(s->pict_type==AV_PICTURE_TYPE_B)
+            s->lambda= s->last_lambda_for[s->pict_type];
+        else
+            s->lambda= s->last_lambda_for[s->last_non_b_pict_type];
+        update_qscale(s);
+    }
+
+    if(s->codec_id != AV_CODEC_ID_AMV){
+        if(s->q_chroma_intra_matrix   != s->q_intra_matrix  ) av_freep(&s->q_chroma_intra_matrix);
+        if(s->q_chroma_intra_matrix16 != s->q_intra_matrix16) av_freep(&s->q_chroma_intra_matrix16);
+        s->q_chroma_intra_matrix   = s->q_intra_matrix;
+        s->q_chroma_intra_matrix16 = s->q_intra_matrix16;
+    }
+
+    s->mb_intra=0; //for the rate distortion & bit compare functions
+    for(i=1; i<context_count; i++){
+        ret = ff_update_duplicate_context(s->thread_context[i], s);
+        if (ret < 0)
+            return ret;
+    }
+
+    if(ff_init_me(s)<0)
+        return -1;
+
+    /* Estimate motion for every MB */
+    if(s->pict_type != AV_PICTURE_TYPE_I){
+        s->lambda = (s->lambda * s->avctx->me_penalty_compensation + 128)>>8;
+        s->lambda2= (s->lambda2* (int64_t)s->avctx->me_penalty_compensation + 128)>>8;
+        if (s->pict_type != AV_PICTURE_TYPE_B) {
+            if((s->avctx->pre_me && s->last_non_b_pict_type==AV_PICTURE_TYPE_I) || s->avctx->pre_me==2){
+                s->avctx->execute(s->avctx, pre_estimate_motion_thread, &s->thread_context[0], NULL, context_count, sizeof(void*));
+            }
+        }
+
+        s->avctx->execute(s->avctx, estimate_motion_thread, &s->thread_context[0], NULL, context_count, sizeof(void*));
+    }else /* if(s->pict_type == AV_PICTURE_TYPE_I) */{
+        /* I-Frame */
+        for(i=0; i<s->mb_stride*s->mb_height; i++)
+            s->mb_type[i]= CANDIDATE_MB_TYPE_INTRA;
+
+        if(!s->fixed_qscale){
+            /* finding spatial complexity for I-frame rate control */
+            s->avctx->execute(s->avctx, mb_var_thread, &s->thread_context[0], NULL, context_count, sizeof(void*));
+        }
+    }
+    for(i=1; i<context_count; i++){
+        merge_context_after_me(s, s->thread_context[i]);
+    }
+    s->current_picture.mc_mb_var_sum= s->current_picture_ptr->mc_mb_var_sum= s->me.mc_mb_var_sum_temp;
+    s->current_picture.   mb_var_sum= s->current_picture_ptr->   mb_var_sum= s->me.   mb_var_sum_temp;
+    emms_c();
+
+    if(s->me.scene_change_score > s->avctx->scenechange_threshold && s->pict_type == AV_PICTURE_TYPE_P){
+        s->pict_type= AV_PICTURE_TYPE_I;
+        for(i=0; i<s->mb_stride*s->mb_height; i++)
+            s->mb_type[i]= CANDIDATE_MB_TYPE_INTRA;
+        if(s->msmpeg4_version >= 3)
+            s->no_rounding=1;
+        av_dlog(s, "Scene change detected, encoding as I Frame %d %d\n",
+                s->current_picture.mb_var_sum, s->current_picture.mc_mb_var_sum);
+    }
+
+    if(!s->umvplus){
+        if(s->pict_type==AV_PICTURE_TYPE_P || s->pict_type==AV_PICTURE_TYPE_S) {
+            s->f_code= ff_get_best_fcode(s, s->p_mv_table, CANDIDATE_MB_TYPE_INTER);
+
+            if(s->flags & CODEC_FLAG_INTERLACED_ME){
+                int a,b;
+                a= ff_get_best_fcode(s, s->p_field_mv_table[0][0], CANDIDATE_MB_TYPE_INTER_I); //FIXME field_select
+                b= ff_get_best_fcode(s, s->p_field_mv_table[1][1], CANDIDATE_MB_TYPE_INTER_I);
+                s->f_code= FFMAX3(s->f_code, a, b);
+            }
+
+            ff_fix_long_p_mvs(s);
+            ff_fix_long_mvs(s, NULL, 0, s->p_mv_table, s->f_code, CANDIDATE_MB_TYPE_INTER, 0);
+            if(s->flags & CODEC_FLAG_INTERLACED_ME){
+                int j;
+                for(i=0; i<2; i++){
+                    for(j=0; j<2; j++)
+                        ff_fix_long_mvs(s, s->p_field_select_table[i], j,
+                                        s->p_field_mv_table[i][j], s->f_code, CANDIDATE_MB_TYPE_INTER_I, 0);
+                }
+            }
+        }
+
+        if(s->pict_type==AV_PICTURE_TYPE_B){
+            int a, b;
+
+            a = ff_get_best_fcode(s, s->b_forw_mv_table, CANDIDATE_MB_TYPE_FORWARD);
+            b = ff_get_best_fcode(s, s->b_bidir_forw_mv_table, CANDIDATE_MB_TYPE_BIDIR);
+            s->f_code = FFMAX(a, b);
+
+            a = ff_get_best_fcode(s, s->b_back_mv_table, CANDIDATE_MB_TYPE_BACKWARD);
+            b = ff_get_best_fcode(s, s->b_bidir_back_mv_table, CANDIDATE_MB_TYPE_BIDIR);
+            s->b_code = FFMAX(a, b);
+
+            ff_fix_long_mvs(s, NULL, 0, s->b_forw_mv_table, s->f_code, CANDIDATE_MB_TYPE_FORWARD, 1);
+            ff_fix_long_mvs(s, NULL, 0, s->b_back_mv_table, s->b_code, CANDIDATE_MB_TYPE_BACKWARD, 1);
+            ff_fix_long_mvs(s, NULL, 0, s->b_bidir_forw_mv_table, s->f_code, CANDIDATE_MB_TYPE_BIDIR, 1);
+            ff_fix_long_mvs(s, NULL, 0, s->b_bidir_back_mv_table, s->b_code, CANDIDATE_MB_TYPE_BIDIR, 1);
+            if(s->flags & CODEC_FLAG_INTERLACED_ME){
+                int dir, j;
+                for(dir=0; dir<2; dir++){
+                    for(i=0; i<2; i++){
+                        for(j=0; j<2; j++){
+                            int type= dir ? (CANDIDATE_MB_TYPE_BACKWARD_I|CANDIDATE_MB_TYPE_BIDIR_I)
+                                          : (CANDIDATE_MB_TYPE_FORWARD_I |CANDIDATE_MB_TYPE_BIDIR_I);
+                            ff_fix_long_mvs(s, s->b_field_select_table[dir][i], j,
+                                            s->b_field_mv_table[dir][i][j], dir ? s->b_code : s->f_code, type, 1);
+                        }
+                    }
+                }
+            }
+        }
+    }
+
+    if (estimate_qp(s, 0) < 0)
+        return -1;
+
+    if(s->qscale < 3 && s->max_qcoeff<=128 && s->pict_type==AV_PICTURE_TYPE_I && !(s->flags & CODEC_FLAG_QSCALE))
+        s->qscale= 3; //reduce clipping problems
+
+    if (s->out_format == FMT_MJPEG) {
+        /* for mjpeg, we do include qscale in the matrix */
+        for(i=1;i<64;i++){
+            int j= s->dsp.idct_permutation[i];
+
+            s->intra_matrix[j] = av_clip_uint8((ff_mpeg1_default_intra_matrix[i] * s->qscale) >> 3);
+        }
+        s->y_dc_scale_table=
+        s->c_dc_scale_table= ff_mpeg2_dc_scale_table[s->intra_dc_precision];
+        s->intra_matrix[0] = ff_mpeg2_dc_scale_table[s->intra_dc_precision][8];
+        ff_convert_matrix(&s->dsp, s->q_intra_matrix, s->q_intra_matrix16,
+                       s->intra_matrix, s->intra_quant_bias, 8, 8, 1);
+        s->qscale= 8;
+    }
+    if(s->codec_id == AV_CODEC_ID_AMV){
+        static const uint8_t y[32]={13,13,13,13,13,13,13,13,13,13,13,13,13,13,13,13,13,13,13,13,13,13,13,13,13,13,13,13,13,13,13,13};
+        static const uint8_t c[32]={14,14,14,14,14,14,14,14,14,14,14,14,14,14,14,14,14,14,14,14,14,14,14,14,14,14,14,14,14,14,14,14};
+        for(i=1;i<64;i++){
+            int j= s->dsp.idct_permutation[ff_zigzag_direct[i]];
+
+            s->intra_matrix[j] = sp5x_quant_table[5*2+0][i];
+            s->chroma_intra_matrix[j] = sp5x_quant_table[5*2+1][i];
+        }
+        s->y_dc_scale_table= y;
+        s->c_dc_scale_table= c;
+        s->intra_matrix[0] = 13;
+        s->chroma_intra_matrix[0] = 14;
+        ff_convert_matrix(&s->dsp, s->q_intra_matrix, s->q_intra_matrix16,
+                       s->intra_matrix, s->intra_quant_bias, 8, 8, 1);
+        ff_convert_matrix(&s->dsp, s->q_chroma_intra_matrix, s->q_chroma_intra_matrix16,
+                       s->chroma_intra_matrix, s->intra_quant_bias, 8, 8, 1);
+        s->qscale= 8;
+    }
+
+    //FIXME var duplication
+    s->current_picture_ptr->f.key_frame =
+    s->current_picture.f.key_frame = s->pict_type == AV_PICTURE_TYPE_I; //FIXME pic_ptr
+    s->current_picture_ptr->f.pict_type =
+    s->current_picture.f.pict_type = s->pict_type;
+
+    if (s->current_picture.f.key_frame)
+        s->picture_in_gop_number=0;
+
+    s->mb_x = s->mb_y = 0;
+    s->last_bits= put_bits_count(&s->pb);
+    switch(s->out_format) {
+    case FMT_MJPEG:
+        if (CONFIG_MJPEG_ENCODER)
+            ff_mjpeg_encode_picture_header(s);
+        break;
+    case FMT_H261:
+        if (CONFIG_H261_ENCODER)
+            ff_h261_encode_picture_header(s, picture_number);
+        break;
+    case FMT_H263:
+        if (CONFIG_WMV2_ENCODER && s->codec_id == AV_CODEC_ID_WMV2)
+            ff_wmv2_encode_picture_header(s, picture_number);
+        else if (CONFIG_MSMPEG4_ENCODER && s->msmpeg4_version)
+            ff_msmpeg4_encode_picture_header(s, picture_number);
+        else if (CONFIG_MPEG4_ENCODER && s->h263_pred)
+            ff_mpeg4_encode_picture_header(s, picture_number);
+        else if (CONFIG_RV10_ENCODER && s->codec_id == AV_CODEC_ID_RV10)
+            ff_rv10_encode_picture_header(s, picture_number);
+        else if (CONFIG_RV20_ENCODER && s->codec_id == AV_CODEC_ID_RV20)
+            ff_rv20_encode_picture_header(s, picture_number);
+        else if (CONFIG_FLV_ENCODER && s->codec_id == AV_CODEC_ID_FLV1)
+            ff_flv_encode_picture_header(s, picture_number);
+        else if (CONFIG_H263_ENCODER)
+            ff_h263_encode_picture_header(s, picture_number);
+        break;
+    case FMT_MPEG1:
+        if (CONFIG_MPEG1VIDEO_ENCODER || CONFIG_MPEG2VIDEO_ENCODER)
+            ff_mpeg1_encode_picture_header(s, picture_number);
+        break;
+    default:
+        av_assert0(0);
+    }
+    bits= put_bits_count(&s->pb);
+    s->header_bits= bits - s->last_bits;
+
+    for(i=1; i<context_count; i++){
+        update_duplicate_context_after_me(s->thread_context[i], s);
+    }
+    s->avctx->execute(s->avctx, encode_thread, &s->thread_context[0], NULL, context_count, sizeof(void*));
+    for(i=1; i<context_count; i++){
+        merge_context_after_encode(s, s->thread_context[i]);
+    }
+    emms_c();
+    return 0;
+}
+
+static void denoise_dct_c(MpegEncContext *s, int16_t *block){
+    const int intra= s->mb_intra;
+    int i;
+
+    s->dct_count[intra]++;
+
+    for(i=0; i<64; i++){
+        int level= block[i];
+
+        if(level){
+            if(level>0){
+                s->dct_error_sum[intra][i] += level;
+                level -= s->dct_offset[intra][i];
+                if(level<0) level=0;
+            }else{
+                s->dct_error_sum[intra][i] -= level;
+                level += s->dct_offset[intra][i];
+                if(level>0) level=0;
+            }
+            block[i]= level;
+        }
+    }
+}
+
+static int dct_quantize_trellis_c(MpegEncContext *s,
+                                  int16_t *block, int n,
+                                  int qscale, int *overflow){
+    const int *qmat;
+    const uint8_t *scantable= s->intra_scantable.scantable;
+    const uint8_t *perm_scantable= s->intra_scantable.permutated;
+    int max=0;
+    unsigned int threshold1, threshold2;
+    int bias=0;
+    int run_tab[65];
+    int level_tab[65];
+    int score_tab[65];
+    int survivor[65];
+    int survivor_count;
+    int last_run=0;
+    int last_level=0;
+    int last_score= 0;
+    int last_i;
+    int coeff[2][64];
+    int coeff_count[64];
+    int qmul, qadd, start_i, last_non_zero, i, dc;
+    const int esc_length= s->ac_esc_length;
+    uint8_t * length;
+    uint8_t * last_length;
+    const int lambda= s->lambda2 >> (FF_LAMBDA_SHIFT - 6);
+
+    s->dsp.fdct (block);
+
+    if(s->dct_error_sum)
+        s->denoise_dct(s, block);
+    qmul= qscale*16;
+    qadd= ((qscale-1)|1)*8;
+
+    if (s->mb_intra) {
+        int q;
+        if (!s->h263_aic) {
+            if (n < 4)
+                q = s->y_dc_scale;
+            else
+                q = s->c_dc_scale;
+            q = q << 3;
+        } else{
+            /* For AIC we skip quant/dequant of INTRADC */
+            q = 1 << 3;
+            qadd=0;
+        }
+
+        /* note: block[0] is assumed to be positive */
+        block[0] = (block[0] + (q >> 1)) / q;
+        start_i = 1;
+        last_non_zero = 0;
+        qmat = n < 4 ? s->q_intra_matrix[qscale] : s->q_chroma_intra_matrix[qscale];
+        if(s->mpeg_quant || s->out_format == FMT_MPEG1)
+            bias= 1<<(QMAT_SHIFT-1);
+        length     = s->intra_ac_vlc_length;
+        last_length= s->intra_ac_vlc_last_length;
+    } else {
+        start_i = 0;
+        last_non_zero = -1;
+        qmat = s->q_inter_matrix[qscale];
+        length     = s->inter_ac_vlc_length;
+        last_length= s->inter_ac_vlc_last_length;
+    }
+    last_i= start_i;
+
+    threshold1= (1<<QMAT_SHIFT) - bias - 1;
+    threshold2= (threshold1<<1);
+
+    for(i=63; i>=start_i; i--) {
+        const int j = scantable[i];
+        int level = block[j] * qmat[j];
+
+        if(((unsigned)(level+threshold1))>threshold2){
+            last_non_zero = i;
+            break;
+        }
+    }
+
+    for(i=start_i; i<=last_non_zero; i++) {
+        const int j = scantable[i];
+        int level = block[j] * qmat[j];
+
+//        if(   bias+level >= (1<<(QMAT_SHIFT - 3))
+//           || bias-level >= (1<<(QMAT_SHIFT - 3))){
+        if(((unsigned)(level+threshold1))>threshold2){
+            if(level>0){
+                level= (bias + level)>>QMAT_SHIFT;
+                coeff[0][i]= level;
+                coeff[1][i]= level-1;
+//                coeff[2][k]= level-2;
+            }else{
+                level= (bias - level)>>QMAT_SHIFT;
+                coeff[0][i]= -level;
+                coeff[1][i]= -level+1;
+//                coeff[2][k]= -level+2;
+            }
+            coeff_count[i]= FFMIN(level, 2);
+            av_assert2(coeff_count[i]);
+            max |=level;
+        }else{
+            coeff[0][i]= (level>>31)|1;
+            coeff_count[i]= 1;
+        }
+    }
+
+    *overflow= s->max_qcoeff < max; //overflow might have happened
+
+    if(last_non_zero < start_i){
+        memset(block + start_i, 0, (64-start_i)*sizeof(int16_t));
+        return last_non_zero;
+    }
+
+    score_tab[start_i]= 0;
+    survivor[0]= start_i;
+    survivor_count= 1;
+
+    for(i=start_i; i<=last_non_zero; i++){
+        int level_index, j, zero_distortion;
+        int dct_coeff= FFABS(block[ scantable[i] ]);
+        int best_score=256*256*256*120;
+
+        if (s->dsp.fdct == ff_fdct_ifast)
+            dct_coeff= (dct_coeff*ff_inv_aanscales[ scantable[i] ]) >> 12;
+        zero_distortion= dct_coeff*dct_coeff;
+
+        for(level_index=0; level_index < coeff_count[i]; level_index++){
+            int distortion;
+            int level= coeff[level_index][i];
+            const int alevel= FFABS(level);
+            int unquant_coeff;
+
+            av_assert2(level);
+
+            if(s->out_format == FMT_H263){
+                unquant_coeff= alevel*qmul + qadd;
+            }else{ //MPEG1
+                j= s->dsp.idct_permutation[ scantable[i] ]; //FIXME optimize
+                if(s->mb_intra){
+                        unquant_coeff = (int)(  alevel  * qscale * s->intra_matrix[j]) >> 3;
+                        unquant_coeff =   (unquant_coeff - 1) | 1;
+                }else{
+                        unquant_coeff = (((  alevel  << 1) + 1) * qscale * ((int) s->inter_matrix[j])) >> 4;
+                        unquant_coeff =   (unquant_coeff - 1) | 1;
+                }
+                unquant_coeff<<= 3;
+            }
+
+            distortion= (unquant_coeff - dct_coeff) * (unquant_coeff - dct_coeff) - zero_distortion;
+            level+=64;
+            if((level&(~127)) == 0){
+                for(j=survivor_count-1; j>=0; j--){
+                    int run= i - survivor[j];
+                    int score= distortion + length[UNI_AC_ENC_INDEX(run, level)]*lambda;
+                    score += score_tab[i-run];
+
+                    if(score < best_score){
+                        best_score= score;
+                        run_tab[i+1]= run;
+                        level_tab[i+1]= level-64;
+                    }
+                }
+
+                if(s->out_format == FMT_H263){
+                    for(j=survivor_count-1; j>=0; j--){
+                        int run= i - survivor[j];
+                        int score= distortion + last_length[UNI_AC_ENC_INDEX(run, level)]*lambda;
+                        score += score_tab[i-run];
+                        if(score < last_score){
+                            last_score= score;
+                            last_run= run;
+                            last_level= level-64;
+                            last_i= i+1;
+                        }
+                    }
+                }
+            }else{
+                distortion += esc_length*lambda;
+                for(j=survivor_count-1; j>=0; j--){
+                    int run= i - survivor[j];
+                    int score= distortion + score_tab[i-run];
+
+                    if(score < best_score){
+                        best_score= score;
+                        run_tab[i+1]= run;
+                        level_tab[i+1]= level-64;
+                    }
+                }
+
+                if(s->out_format == FMT_H263){
+                  for(j=survivor_count-1; j>=0; j--){
+                        int run= i - survivor[j];
+                        int score= distortion + score_tab[i-run];
+                        if(score < last_score){
+                            last_score= score;
+                            last_run= run;
+                            last_level= level-64;
+                            last_i= i+1;
+                        }
+                    }
+                }
+            }
+        }
+
+        score_tab[i+1]= best_score;
+
+        //Note: there is a vlc code in mpeg4 which is 1 bit shorter then another one with a shorter run and the same level
+        if(last_non_zero <= 27){
+            for(; survivor_count; survivor_count--){
+                if(score_tab[ survivor[survivor_count-1] ] <= best_score)
+                    break;
+            }
+        }else{
+            for(; survivor_count; survivor_count--){
+                if(score_tab[ survivor[survivor_count-1] ] <= best_score + lambda)
+                    break;
+            }
+        }
+
+        survivor[ survivor_count++ ]= i+1;
+    }
+
+    if(s->out_format != FMT_H263){
+        last_score= 256*256*256*120;
+        for(i= survivor[0]; i<=last_non_zero + 1; i++){
+            int score= score_tab[i];
+            if(i) score += lambda*2; //FIXME exacter?
+
+            if(score < last_score){
+                last_score= score;
+                last_i= i;
+                last_level= level_tab[i];
+                last_run= run_tab[i];
+            }
+        }
+    }
+
+    s->coded_score[n] = last_score;
+
+    dc= FFABS(block[0]);
+    last_non_zero= last_i - 1;
+    memset(block + start_i, 0, (64-start_i)*sizeof(int16_t));
+
+    if(last_non_zero < start_i)
+        return last_non_zero;
+
+    if(last_non_zero == 0 && start_i == 0){
+        int best_level= 0;
+        int best_score= dc * dc;
+
+        for(i=0; i<coeff_count[0]; i++){
+            int level= coeff[i][0];
+            int alevel= FFABS(level);
+            int unquant_coeff, score, distortion;
+
+            if(s->out_format == FMT_H263){
+                    unquant_coeff= (alevel*qmul + qadd)>>3;
+            }else{ //MPEG1
+                    unquant_coeff = (((  alevel  << 1) + 1) * qscale * ((int) s->inter_matrix[0])) >> 4;
+                    unquant_coeff =   (unquant_coeff - 1) | 1;
+            }
+            unquant_coeff = (unquant_coeff + 4) >> 3;
+            unquant_coeff<<= 3 + 3;
+
+            distortion= (unquant_coeff - dc) * (unquant_coeff - dc);
+            level+=64;
+            if((level&(~127)) == 0) score= distortion + last_length[UNI_AC_ENC_INDEX(0, level)]*lambda;
+            else                    score= distortion + esc_length*lambda;
+
+            if(score < best_score){
+                best_score= score;
+                best_level= level - 64;
+            }
+        }
+        block[0]= best_level;
+        s->coded_score[n] = best_score - dc*dc;
+        if(best_level == 0) return -1;
+        else                return last_non_zero;
+    }
+
+    i= last_i;
+    av_assert2(last_level);
+
+    block[ perm_scantable[last_non_zero] ]= last_level;
+    i -= last_run + 1;
+
+    for(; i>start_i; i -= run_tab[i] + 1){
+        block[ perm_scantable[i-1] ]= level_tab[i];
+    }
+
+    return last_non_zero;
+}
+
+//#define REFINE_STATS 1
+static int16_t basis[64][64];
+
+static void build_basis(uint8_t *perm){
+    int i, j, x, y;
+    emms_c();
+    for(i=0; i<8; i++){
+        for(j=0; j<8; j++){
+            for(y=0; y<8; y++){
+                for(x=0; x<8; x++){
+                    double s= 0.25*(1<<BASIS_SHIFT);
+                    int index= 8*i + j;
+                    int perm_index= perm[index];
+                    if(i==0) s*= sqrt(0.5);
+                    if(j==0) s*= sqrt(0.5);
+                    basis[perm_index][8*x + y]= lrintf(s * cos((M_PI/8.0)*i*(x+0.5)) * cos((M_PI/8.0)*j*(y+0.5)));
+                }
+            }
+        }
+    }
+}
+
+static int dct_quantize_refine(MpegEncContext *s, //FIXME breaks denoise?
+                        int16_t *block, int16_t *weight, int16_t *orig,
+                        int n, int qscale){
+    int16_t rem[64];
+    LOCAL_ALIGNED_16(int16_t, d1, [64]);
+    const uint8_t *scantable= s->intra_scantable.scantable;
+    const uint8_t *perm_scantable= s->intra_scantable.permutated;
+//    unsigned int threshold1, threshold2;
+//    int bias=0;
+    int run_tab[65];
+    int prev_run=0;
+    int prev_level=0;
+    int qmul, qadd, start_i, last_non_zero, i, dc;
+    uint8_t * length;
+    uint8_t * last_length;
+    int lambda;
+    int rle_index, run, q = 1, sum; //q is only used when s->mb_intra is true
+#ifdef REFINE_STATS
+static int count=0;
+static int after_last=0;
+static int to_zero=0;
+static int from_zero=0;
+static int raise=0;
+static int lower=0;
+static int messed_sign=0;
+#endif
+
+    if(basis[0][0] == 0)
+        build_basis(s->dsp.idct_permutation);
+
+    qmul= qscale*2;
+    qadd= (qscale-1)|1;
+    if (s->mb_intra) {
+        if (!s->h263_aic) {
+            if (n < 4)
+                q = s->y_dc_scale;
+            else
+                q = s->c_dc_scale;
+        } else{
+            /* For AIC we skip quant/dequant of INTRADC */
+            q = 1;
+            qadd=0;
+        }
+        q <<= RECON_SHIFT-3;
+        /* note: block[0] is assumed to be positive */
+        dc= block[0]*q;
+//        block[0] = (block[0] + (q >> 1)) / q;
+        start_i = 1;
+//        if(s->mpeg_quant || s->out_format == FMT_MPEG1)
+//            bias= 1<<(QMAT_SHIFT-1);
+        length     = s->intra_ac_vlc_length;
+        last_length= s->intra_ac_vlc_last_length;
+    } else {
+        dc= 0;
+        start_i = 0;
+        length     = s->inter_ac_vlc_length;
+        last_length= s->inter_ac_vlc_last_length;
+    }
+    last_non_zero = s->block_last_index[n];
+
+#ifdef REFINE_STATS
+{START_TIMER
+#endif
+    dc += (1<<(RECON_SHIFT-1));
+    for(i=0; i<64; i++){
+        rem[i]= dc - (orig[i]<<RECON_SHIFT); //FIXME  use orig dirrectly instead of copying to rem[]
+    }
+#ifdef REFINE_STATS
+STOP_TIMER("memset rem[]")}
+#endif
+    sum=0;
+    for(i=0; i<64; i++){
+        int one= 36;
+        int qns=4;
+        int w;
+
+        w= FFABS(weight[i]) + qns*one;
+        w= 15 + (48*qns*one + w/2)/w; // 16 .. 63
+
+        weight[i] = w;
+//        w=weight[i] = (63*qns + (w/2)) / w;
+
+        av_assert2(w>0);
+        av_assert2(w<(1<<6));
+        sum += w*w;
+    }
+    lambda= sum*(uint64_t)s->lambda2 >> (FF_LAMBDA_SHIFT - 6 + 6 + 6 + 6);
+#ifdef REFINE_STATS
+{START_TIMER
+#endif
+    run=0;
+    rle_index=0;
+    for(i=start_i; i<=last_non_zero; i++){
+        int j= perm_scantable[i];
+        const int level= block[j];
+        int coeff;
+
+        if(level){
+            if(level<0) coeff= qmul*level - qadd;
+            else        coeff= qmul*level + qadd;
+            run_tab[rle_index++]=run;
+            run=0;
+
+            s->dsp.add_8x8basis(rem, basis[j], coeff);
+        }else{
+            run++;
+        }
+    }
+#ifdef REFINE_STATS
+if(last_non_zero>0){
+STOP_TIMER("init rem[]")
+}
+}
+
+{START_TIMER
+#endif
+    for(;;){
+        int best_score=s->dsp.try_8x8basis(rem, weight, basis[0], 0);
+        int best_coeff=0;
+        int best_change=0;
+        int run2, best_unquant_change=0, analyze_gradient;
+#ifdef REFINE_STATS
+{START_TIMER
+#endif
+        analyze_gradient = last_non_zero > 2 || s->quantizer_noise_shaping >= 3;
+
+        if(analyze_gradient){
+#ifdef REFINE_STATS
+{START_TIMER
+#endif
+            for(i=0; i<64; i++){
+                int w= weight[i];
+
+                d1[i] = (rem[i]*w*w + (1<<(RECON_SHIFT+12-1)))>>(RECON_SHIFT+12);
+            }
+#ifdef REFINE_STATS
+STOP_TIMER("rem*w*w")}
+{START_TIMER
+#endif
+            s->dsp.fdct(d1);
+#ifdef REFINE_STATS
+STOP_TIMER("dct")}
+#endif
+        }
+
+        if(start_i){
+            const int level= block[0];
+            int change, old_coeff;
+
+            av_assert2(s->mb_intra);
+
+            old_coeff= q*level;
+
+            for(change=-1; change<=1; change+=2){
+                int new_level= level + change;
+                int score, new_coeff;
+
+                new_coeff= q*new_level;
+                if(new_coeff >= 2048 || new_coeff < 0)
+                    continue;
+
+                score= s->dsp.try_8x8basis(rem, weight, basis[0], new_coeff - old_coeff);
+                if(score<best_score){
+                    best_score= score;
+                    best_coeff= 0;
+                    best_change= change;
+                    best_unquant_change= new_coeff - old_coeff;
+                }
+            }
+        }
+
+        run=0;
+        rle_index=0;
+        run2= run_tab[rle_index++];
+        prev_level=0;
+        prev_run=0;
+
+        for(i=start_i; i<64; i++){
+            int j= perm_scantable[i];
+            const int level= block[j];
+            int change, old_coeff;
+
+            if(s->quantizer_noise_shaping < 3 && i > last_non_zero + 1)
+                break;
+
+            if(level){
+                if(level<0) old_coeff= qmul*level - qadd;
+                else        old_coeff= qmul*level + qadd;
+                run2= run_tab[rle_index++]; //FIXME ! maybe after last
+            }else{
+                old_coeff=0;
+                run2--;
+                av_assert2(run2>=0 || i >= last_non_zero );
+            }
+
+            for(change=-1; change<=1; change+=2){
+                int new_level= level + change;
+                int score, new_coeff, unquant_change;
+
+                score=0;
+                if(s->quantizer_noise_shaping < 2 && FFABS(new_level) > FFABS(level))
+                   continue;
+
+                if(new_level){
+                    if(new_level<0) new_coeff= qmul*new_level - qadd;
+                    else            new_coeff= qmul*new_level + qadd;
+                    if(new_coeff >= 2048 || new_coeff <= -2048)
+                        continue;
+                    //FIXME check for overflow
+
+                    if(level){
+                        if(level < 63 && level > -63){
+                            if(i < last_non_zero)
+                                score +=   length[UNI_AC_ENC_INDEX(run, new_level+64)]
+                                         - length[UNI_AC_ENC_INDEX(run, level+64)];
+                            else
+                                score +=   last_length[UNI_AC_ENC_INDEX(run, new_level+64)]
+                                         - last_length[UNI_AC_ENC_INDEX(run, level+64)];
+                        }
+                    }else{
+                        av_assert2(FFABS(new_level)==1);
+
+                        if(analyze_gradient){
+                            int g= d1[ scantable[i] ];
+                            if(g && (g^new_level) >= 0)
+                                continue;
+                        }
+
+                        if(i < last_non_zero){
+                            int next_i= i + run2 + 1;
+                            int next_level= block[ perm_scantable[next_i] ] + 64;
+
+                            if(next_level&(~127))
+                                next_level= 0;
+
+                            if(next_i < last_non_zero)
+                                score +=   length[UNI_AC_ENC_INDEX(run, 65)]
+                                         + length[UNI_AC_ENC_INDEX(run2, next_level)]
+                                         - length[UNI_AC_ENC_INDEX(run + run2 + 1, next_level)];
+                            else
+                                score +=  length[UNI_AC_ENC_INDEX(run, 65)]
+                                        + last_length[UNI_AC_ENC_INDEX(run2, next_level)]
+                                        - last_length[UNI_AC_ENC_INDEX(run + run2 + 1, next_level)];
+                        }else{
+                            score += last_length[UNI_AC_ENC_INDEX(run, 65)];
+                            if(prev_level){
+                                score +=  length[UNI_AC_ENC_INDEX(prev_run, prev_level)]
+                                        - last_length[UNI_AC_ENC_INDEX(prev_run, prev_level)];
+                            }
+                        }
+                    }
+                }else{
+                    new_coeff=0;
+                    av_assert2(FFABS(level)==1);
+
+                    if(i < last_non_zero){
+                        int next_i= i + run2 + 1;
+                        int next_level= block[ perm_scantable[next_i] ] + 64;
+
+                        if(next_level&(~127))
+                            next_level= 0;
+
+                        if(next_i < last_non_zero)
+                            score +=   length[UNI_AC_ENC_INDEX(run + run2 + 1, next_level)]
+                                     - length[UNI_AC_ENC_INDEX(run2, next_level)]
+                                     - length[UNI_AC_ENC_INDEX(run, 65)];
+                        else
+                            score +=   last_length[UNI_AC_ENC_INDEX(run + run2 + 1, next_level)]
+                                     - last_length[UNI_AC_ENC_INDEX(run2, next_level)]
+                                     - length[UNI_AC_ENC_INDEX(run, 65)];
+                    }else{
+                        score += -last_length[UNI_AC_ENC_INDEX(run, 65)];
+                        if(prev_level){
+                            score +=  last_length[UNI_AC_ENC_INDEX(prev_run, prev_level)]
+                                    - length[UNI_AC_ENC_INDEX(prev_run, prev_level)];
+                        }
+                    }
+                }
+
+                score *= lambda;
+
+                unquant_change= new_coeff - old_coeff;
+                av_assert2((score < 100*lambda && score > -100*lambda) || lambda==0);
+
+                score+= s->dsp.try_8x8basis(rem, weight, basis[j], unquant_change);
+                if(score<best_score){
+                    best_score= score;
+                    best_coeff= i;
+                    best_change= change;
+                    best_unquant_change= unquant_change;
+                }
+            }
+            if(level){
+                prev_level= level + 64;
+                if(prev_level&(~127))
+                    prev_level= 0;
+                prev_run= run;
+                run=0;
+            }else{
+                run++;
+            }
+        }
+#ifdef REFINE_STATS
+STOP_TIMER("iterative step")}
+#endif
+
+        if(best_change){
+            int j= perm_scantable[ best_coeff ];
+
+            block[j] += best_change;
+
+            if(best_coeff > last_non_zero){
+                last_non_zero= best_coeff;
+                av_assert2(block[j]);
+#ifdef REFINE_STATS
+after_last++;
+#endif
+            }else{
+#ifdef REFINE_STATS
+if(block[j]){
+    if(block[j] - best_change){
+        if(FFABS(block[j]) > FFABS(block[j] - best_change)){
+            raise++;
+        }else{
+            lower++;
+        }
+    }else{
+        from_zero++;
+    }
+}else{
+    to_zero++;
+}
+#endif
+                for(; last_non_zero>=start_i; last_non_zero--){
+                    if(block[perm_scantable[last_non_zero]])
+                        break;
+                }
+            }
+#ifdef REFINE_STATS
+count++;
+if(256*256*256*64 % count == 0){
+    av_log(s->avctx, AV_LOG_DEBUG, "after_last:%d to_zero:%d from_zero:%d raise:%d lower:%d sign:%d xyp:%d/%d/%d\n", after_last, to_zero, from_zero, raise, lower, messed_sign, s->mb_x, s->mb_y, s->picture_number);
+}
+#endif
+            run=0;
+            rle_index=0;
+            for(i=start_i; i<=last_non_zero; i++){
+                int j= perm_scantable[i];
+                const int level= block[j];
+
+                 if(level){
+                     run_tab[rle_index++]=run;
+                     run=0;
+                 }else{
+                     run++;
+                 }
+            }
+
+            s->dsp.add_8x8basis(rem, basis[j], best_unquant_change);
+        }else{
+            break;
+        }
+    }
+#ifdef REFINE_STATS
+if(last_non_zero>0){
+STOP_TIMER("iterative search")
+}
+}
+#endif
+
+    return last_non_zero;
+}
+
+int ff_dct_quantize_c(MpegEncContext *s,
+                        int16_t *block, int n,
+                        int qscale, int *overflow)
+{
+    int i, j, level, last_non_zero, q, start_i;
+    const int *qmat;
+    const uint8_t *scantable= s->intra_scantable.scantable;
+    int bias;
+    int max=0;
+    unsigned int threshold1, threshold2;
+
+    s->dsp.fdct (block);
+
+    if(s->dct_error_sum)
+        s->denoise_dct(s, block);
+
+    if (s->mb_intra) {
+        if (!s->h263_aic) {
+            if (n < 4)
+                q = s->y_dc_scale;
+            else
+                q = s->c_dc_scale;
+            q = q << 3;
+        } else
+            /* For AIC we skip quant/dequant of INTRADC */
+            q = 1 << 3;
+
+        /* note: block[0] is assumed to be positive */
+        block[0] = (block[0] + (q >> 1)) / q;
+        start_i = 1;
+        last_non_zero = 0;
+        qmat = n < 4 ? s->q_intra_matrix[qscale] : s->q_chroma_intra_matrix[qscale];
+        bias= s->intra_quant_bias<<(QMAT_SHIFT - QUANT_BIAS_SHIFT);
+    } else {
+        start_i = 0;
+        last_non_zero = -1;
+        qmat = s->q_inter_matrix[qscale];
+        bias= s->inter_quant_bias<<(QMAT_SHIFT - QUANT_BIAS_SHIFT);
+    }
+    threshold1= (1<<QMAT_SHIFT) - bias - 1;
+    threshold2= (threshold1<<1);
+    for(i=63;i>=start_i;i--) {
+        j = scantable[i];
+        level = block[j] * qmat[j];
+
+        if(((unsigned)(level+threshold1))>threshold2){
+            last_non_zero = i;
+            break;
+        }else{
+            block[j]=0;
+        }
+    }
+    for(i=start_i; i<=last_non_zero; i++) {
+        j = scantable[i];
+        level = block[j] * qmat[j];
+
+//        if(   bias+level >= (1<<QMAT_SHIFT)
+//           || bias-level >= (1<<QMAT_SHIFT)){
+        if(((unsigned)(level+threshold1))>threshold2){
+            if(level>0){
+                level= (bias + level)>>QMAT_SHIFT;
+                block[j]= level;
+            }else{
+                level= (bias - level)>>QMAT_SHIFT;
+                block[j]= -level;
+            }
+            max |=level;
+        }else{
+            block[j]=0;
+        }
+    }
+    *overflow= s->max_qcoeff < max; //overflow might have happened
+
+    /* we need this permutation so that we correct the IDCT, we only permute the !=0 elements */
+    if (s->dsp.idct_permutation_type != FF_NO_IDCT_PERM)
+        ff_block_permute(block, s->dsp.idct_permutation, scantable, last_non_zero);
+
+    return last_non_zero;
+}
+
+#define OFFSET(x) offsetof(MpegEncContext, x)
+#define VE AV_OPT_FLAG_VIDEO_PARAM | AV_OPT_FLAG_ENCODING_PARAM
+static const AVOption h263_options[] = {
+    { "obmc",         "use overlapped block motion compensation.", OFFSET(obmc), AV_OPT_TYPE_INT, { .i64 = 0 }, 0, 1, VE },
+    { "structured_slices","Write slice start position at every GOB header instead of just GOB number.", OFFSET(h263_slice_structured), AV_OPT_TYPE_INT, { .i64 = 0 }, 0, 1, VE},
+    { "mb_info",      "emit macroblock info for RFC 2190 packetization, the parameter value is the maximum payload size", OFFSET(mb_info), AV_OPT_TYPE_INT, { .i64 = 0 }, 0, INT_MAX, VE },
+    FF_MPV_COMMON_OPTS
+    { NULL },
+};
+
+static const AVClass h263_class = {
+    .class_name = "H.263 encoder",
+    .item_name  = av_default_item_name,
+    .option     = h263_options,
+    .version    = LIBAVUTIL_VERSION_INT,
+};
+
+AVCodec ff_h263_encoder = {
+    .name           = "h263",
+    .type           = AVMEDIA_TYPE_VIDEO,
+    .id             = AV_CODEC_ID_H263,
+    .priv_data_size = sizeof(MpegEncContext),
+    .init           = ff_MPV_encode_init,
+    .encode2        = ff_MPV_encode_picture,
+    .close          = ff_MPV_encode_end,
+    .pix_fmts= (const enum AVPixelFormat[]){AV_PIX_FMT_YUV420P, AV_PIX_FMT_NONE},
+    .long_name= NULL_IF_CONFIG_SMALL("H.263 / H.263-1996"),
+    .priv_class     = &h263_class,
+};
+
+static const AVOption h263p_options[] = {
+    { "umv",        "Use unlimited motion vectors.",    OFFSET(umvplus), AV_OPT_TYPE_INT, { .i64 = 0 }, 0, 1, VE },
+    { "aiv",        "Use alternative inter VLC.",       OFFSET(alt_inter_vlc), AV_OPT_TYPE_INT, { .i64 = 0 }, 0, 1, VE },
+    { "obmc",       "use overlapped block motion compensation.", OFFSET(obmc), AV_OPT_TYPE_INT, { .i64 = 0 }, 0, 1, VE },
+    { "structured_slices", "Write slice start position at every GOB header instead of just GOB number.", OFFSET(h263_slice_structured), AV_OPT_TYPE_INT, { .i64 = 0 }, 0, 1, VE},
+    FF_MPV_COMMON_OPTS
+    { NULL },
+};
+static const AVClass h263p_class = {
+    .class_name = "H.263p encoder",
+    .item_name  = av_default_item_name,
+    .option     = h263p_options,
+    .version    = LIBAVUTIL_VERSION_INT,
+};
+
+AVCodec ff_h263p_encoder = {
+    .name           = "h263p",
+    .type           = AVMEDIA_TYPE_VIDEO,
+    .id             = AV_CODEC_ID_H263P,
+    .priv_data_size = sizeof(MpegEncContext),
+    .init           = ff_MPV_encode_init,
+    .encode2        = ff_MPV_encode_picture,
+    .close          = ff_MPV_encode_end,
+    .capabilities   = CODEC_CAP_SLICE_THREADS,
+    .pix_fmts       = (const enum AVPixelFormat[]){ AV_PIX_FMT_YUV420P, AV_PIX_FMT_NONE },
+    .long_name      = NULL_IF_CONFIG_SMALL("H.263+ / H.263-1998 / H.263 version 2"),
+    .priv_class     = &h263p_class,
+};
+
+FF_MPV_GENERIC_CLASS(msmpeg4v2)
+
+AVCodec ff_msmpeg4v2_encoder = {
+    .name           = "msmpeg4v2",
+    .type           = AVMEDIA_TYPE_VIDEO,
+    .id             = AV_CODEC_ID_MSMPEG4V2,
+    .priv_data_size = sizeof(MpegEncContext),
+    .init           = ff_MPV_encode_init,
+    .encode2        = ff_MPV_encode_picture,
+    .close          = ff_MPV_encode_end,
+    .pix_fmts       = (const enum AVPixelFormat[]){ AV_PIX_FMT_YUV420P, AV_PIX_FMT_NONE },
+    .long_name      = NULL_IF_CONFIG_SMALL("MPEG-4 part 2 Microsoft variant version 2"),
+    .priv_class     = &msmpeg4v2_class,
+};
+
+FF_MPV_GENERIC_CLASS(msmpeg4v3)
+
+AVCodec ff_msmpeg4v3_encoder = {
+    .name           = "msmpeg4",
+    .type           = AVMEDIA_TYPE_VIDEO,
+    .id             = AV_CODEC_ID_MSMPEG4V3,
+    .priv_data_size = sizeof(MpegEncContext),
+    .init           = ff_MPV_encode_init,
+    .encode2        = ff_MPV_encode_picture,
+    .close          = ff_MPV_encode_end,
+    .pix_fmts       = (const enum AVPixelFormat[]){ AV_PIX_FMT_YUV420P, AV_PIX_FMT_NONE },
+    .long_name      = NULL_IF_CONFIG_SMALL("MPEG-4 part 2 Microsoft variant version 3"),
+    .priv_class     = &msmpeg4v3_class,
+};
+
+FF_MPV_GENERIC_CLASS(wmv1)
+
+AVCodec ff_wmv1_encoder = {
+    .name           = "wmv1",
+    .type           = AVMEDIA_TYPE_VIDEO,
+    .id             = AV_CODEC_ID_WMV1,
+    .priv_data_size = sizeof(MpegEncContext),
+    .init           = ff_MPV_encode_init,
+    .encode2        = ff_MPV_encode_picture,
+    .close          = ff_MPV_encode_end,
+    .pix_fmts       = (const enum AVPixelFormat[]){ AV_PIX_FMT_YUV420P, AV_PIX_FMT_NONE },
+    .long_name      = NULL_IF_CONFIG_SMALL("Windows Media Video 7"),
+    .priv_class     = &wmv1_class,
+};