making act segmenter

1 files changed, 0 insertions, 1062 deletions

diff --git a/ffmpeg1/libavcodec/ratecontrol.c b/ffmpeg1/libavcodec/ratecontrol.c
deleted file mode 100644
index 5860423..0000000
--- a/ffmpeg1/libavcodec/ratecontrol.c
+++ /dev/null
@@ -1,1062 +0,0 @@
-/*
- * Rate control for video encoders
- *
- * Copyright (c) 2002-2004 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
- * Rate control for video encoders.
- */
-
-#include "avcodec.h"
-#include "ratecontrol.h"
-#include "mpegvideo.h"
-#include "libavutil/eval.h"
-
-#undef NDEBUG // Always check asserts, the speed effect is far too small to disable them.
-#include <assert.h>
-
-#ifndef M_E
-#define M_E 2.718281828
-#endif
-
-static int init_pass2(MpegEncContext *s);
-static double get_qscale(MpegEncContext *s, RateControlEntry *rce,
-                         double rate_factor, int frame_num);
-
-void ff_write_pass1_stats(MpegEncContext *s)
-{
-    snprintf(s->avctx->stats_out, 256,
-             "in:%d out:%d type:%d q:%d itex:%d ptex:%d mv:%d misc:%d "
-             "fcode:%d bcode:%d mc-var:%d var:%d icount:%d skipcount:%d hbits:%d;\n",
-             s->current_picture_ptr->f.display_picture_number,
-             s->current_picture_ptr->f.coded_picture_number,
-             s->pict_type,
-             s->current_picture.f.quality,
-             s->i_tex_bits,
-             s->p_tex_bits,
-             s->mv_bits,
-             s->misc_bits,
-             s->f_code,
-             s->b_code,
-             s->current_picture.mc_mb_var_sum,
-             s->current_picture.mb_var_sum,
-             s->i_count, s->skip_count,
-             s->header_bits);
-}
-
-static double get_fps(AVCodecContext *avctx)
-{
-    return 1.0 / av_q2d(avctx->time_base) / FFMAX(avctx->ticks_per_frame, 1);
-}
-
-static inline double qp2bits(RateControlEntry *rce, double qp)
-{
-    if (qp <= 0.0) {
-        av_log(NULL, AV_LOG_ERROR, "qp<=0.0\n");
-    }
-    return rce->qscale * (double)(rce->i_tex_bits + rce->p_tex_bits + 1) / qp;
-}
-
-static inline double bits2qp(RateControlEntry *rce, double bits)
-{
-    if (bits < 0.9) {
-        av_log(NULL, AV_LOG_ERROR, "bits<0.9\n");
-    }
-    return rce->qscale * (double)(rce->i_tex_bits + rce->p_tex_bits + 1) / bits;
-}
-
-int ff_rate_control_init(MpegEncContext *s)
-{
-    RateControlContext *rcc = &s->rc_context;
-    int i, res;
-    static const char * const const_names[] = {
-        "PI",
-        "E",
-        "iTex",
-        "pTex",
-        "tex",
-        "mv",
-        "fCode",
-        "iCount",
-        "mcVar",
-        "var",
-        "isI",
-        "isP",
-        "isB",
-        "avgQP",
-        "qComp",
-#if 0
-        "lastIQP",
-        "lastPQP",
-        "lastBQP",
-        "nextNonBQP",
-#endif
-        "avgIITex",
-        "avgPITex",
-        "avgPPTex",
-        "avgBPTex",
-        "avgTex",
-        NULL
-    };
-    static double (* const func1[])(void *, double) = {
-        (void *)bits2qp,
-        (void *)qp2bits,
-        NULL
-    };
-    static const char * const func1_names[] = {
-        "bits2qp",
-        "qp2bits",
-        NULL
-    };
-    emms_c();
-
-    if (!s->avctx->rc_max_available_vbv_use && s->avctx->rc_buffer_size) {
-        if (s->avctx->rc_max_rate) {
-            s->avctx->rc_max_available_vbv_use = av_clipf(s->avctx->rc_max_rate/(s->avctx->rc_buffer_size*get_fps(s->avctx)), 1.0/3, 1.0);
-        } else
-            s->avctx->rc_max_available_vbv_use = 1.0;
-    }
-
-    res = av_expr_parse(&rcc->rc_eq_eval,
-                        s->avctx->rc_eq ? s->avctx->rc_eq : "tex^qComp",
-                        const_names, func1_names, func1,
-                        NULL, NULL, 0, s->avctx);
-    if (res < 0) {
-        av_log(s->avctx, AV_LOG_ERROR, "Error parsing rc_eq \"%s\"\n", s->avctx->rc_eq);
-        return res;
-    }
-
-    for (i = 0; i < 5; i++) {
-        rcc->pred[i].coeff = FF_QP2LAMBDA * 7.0;
-        rcc->pred[i].count = 1.0;
-        rcc->pred[i].decay = 0.4;
-
-        rcc->i_cplx_sum [i] =
-        rcc->p_cplx_sum [i] =
-        rcc->mv_bits_sum[i] =
-        rcc->qscale_sum [i] =
-        rcc->frame_count[i] = 1; // 1 is better because of 1/0 and such
-
-        rcc->last_qscale_for[i] = FF_QP2LAMBDA * 5;
-    }
-    rcc->buffer_index = s->avctx->rc_initial_buffer_occupancy;
-    if (!rcc->buffer_index)
-        rcc->buffer_index = s->avctx->rc_buffer_size * 3 / 4;
-
-    if (s->flags & CODEC_FLAG_PASS2) {
-        int i;
-        char *p;
-
-        /* find number of pics */
-        p = s->avctx->stats_in;
-        for (i = -1; p; i++)
-            p = strchr(p + 1, ';');
-        i += s->max_b_frames;
-        if (i <= 0 || i >= INT_MAX / sizeof(RateControlEntry))
-            return -1;
-        rcc->entry       = av_mallocz(i * sizeof(RateControlEntry));
-        rcc->num_entries = i;
-
-        /* init all to skipped p frames
-         * (with b frames we might have a not encoded frame at the end FIXME) */
-        for (i = 0; i < rcc->num_entries; i++) {
-            RateControlEntry *rce = &rcc->entry[i];
-
-            rce->pict_type  = rce->new_pict_type = AV_PICTURE_TYPE_P;
-            rce->qscale     = rce->new_qscale    = FF_QP2LAMBDA * 2;
-            rce->misc_bits  = s->mb_num + 10;
-            rce->mb_var_sum = s->mb_num * 100;
-        }
-
-        /* read stats */
-        p = s->avctx->stats_in;
-        for (i = 0; i < rcc->num_entries - s->max_b_frames; i++) {
-            RateControlEntry *rce;
-            int picture_number;
-            int e;
-            char *next;
-
-            next = strchr(p, ';');
-            if (next) {
-                (*next) = 0; // sscanf in unbelievably slow on looong strings // FIXME copy / do not write
-                next++;
-            }
-            e = sscanf(p, " in:%d ", &picture_number);
-
-            assert(picture_number >= 0);
-            assert(picture_number < rcc->num_entries);
-            rce = &rcc->entry[picture_number];
-
-            e += sscanf(p, " in:%*d out:%*d type:%d q:%f itex:%d ptex:%d mv:%d misc:%d fcode:%d bcode:%d mc-var:%d var:%d icount:%d skipcount:%d hbits:%d",
-                        &rce->pict_type, &rce->qscale, &rce->i_tex_bits, &rce->p_tex_bits,
-                        &rce->mv_bits, &rce->misc_bits,
-                        &rce->f_code, &rce->b_code,
-                        &rce->mc_mb_var_sum, &rce->mb_var_sum,
-                        &rce->i_count, &rce->skip_count, &rce->header_bits);
-            if (e != 14) {
-                av_log(s->avctx, AV_LOG_ERROR,
-                       "statistics are damaged at line %d, parser out=%d\n",
-                       i, e);
-                return -1;
-            }
-
-            p = next;
-        }
-
-        if (init_pass2(s) < 0)
-            return -1;
-
-        // FIXME maybe move to end
-        if ((s->flags & CODEC_FLAG_PASS2) && s->avctx->rc_strategy == FF_RC_STRATEGY_XVID) {
-#if CONFIG_LIBXVID
-            return ff_xvid_rate_control_init(s);
-#else
-            av_log(s->avctx, AV_LOG_ERROR,
-                   "Xvid ratecontrol requires libavcodec compiled with Xvid support.\n");
-            return -1;
-#endif
-        }
-    }
-
-    if (!(s->flags & CODEC_FLAG_PASS2)) {
-        rcc->short_term_qsum   = 0.001;
-        rcc->short_term_qcount = 0.001;
-
-        rcc->pass1_rc_eq_output_sum = 0.001;
-        rcc->pass1_wanted_bits      = 0.001;
-
-        if (s->avctx->qblur > 1.0) {
-            av_log(s->avctx, AV_LOG_ERROR, "qblur too large\n");
-            return -1;
-        }
-        /* init stuff with the user specified complexity */
-        if (s->avctx->rc_initial_cplx) {
-            for (i = 0; i < 60 * 30; i++) {
-                double bits = s->avctx->rc_initial_cplx * (i / 10000.0 + 1.0) * s->mb_num;
-                RateControlEntry rce;
-
-                if (i % ((s->gop_size + 3) / 4) == 0)
-                    rce.pict_type = AV_PICTURE_TYPE_I;
-                else if (i % (s->max_b_frames + 1))
-                    rce.pict_type = AV_PICTURE_TYPE_B;
-                else
-                    rce.pict_type = AV_PICTURE_TYPE_P;
-
-                rce.new_pict_type = rce.pict_type;
-                rce.mc_mb_var_sum = bits * s->mb_num / 100000;
-                rce.mb_var_sum    = s->mb_num;
-
-                rce.qscale    = FF_QP2LAMBDA * 2;
-                rce.f_code    = 2;
-                rce.b_code    = 1;
-                rce.misc_bits = 1;
-
-                if (s->pict_type == AV_PICTURE_TYPE_I) {
-                    rce.i_count    = s->mb_num;
-                    rce.i_tex_bits = bits;
-                    rce.p_tex_bits = 0;
-                    rce.mv_bits    = 0;
-                } else {
-                    rce.i_count    = 0; // FIXME we do know this approx
-                    rce.i_tex_bits = 0;
-                    rce.p_tex_bits = bits * 0.9;
-                    rce.mv_bits    = bits * 0.1;
-                }
-                rcc->i_cplx_sum[rce.pict_type]  += rce.i_tex_bits * rce.qscale;
-                rcc->p_cplx_sum[rce.pict_type]  += rce.p_tex_bits * rce.qscale;
-                rcc->mv_bits_sum[rce.pict_type] += rce.mv_bits;
-                rcc->frame_count[rce.pict_type]++;
-
-                get_qscale(s, &rce, rcc->pass1_wanted_bits / rcc->pass1_rc_eq_output_sum, i);
-
-                // FIXME misbehaves a little for variable fps
-                rcc->pass1_wanted_bits += s->bit_rate / get_fps(s->avctx);
-            }
-        }
-    }
-
-    return 0;
-}
-
-void ff_rate_control_uninit(MpegEncContext *s)
-{
-    RateControlContext *rcc = &s->rc_context;
-    emms_c();
-
-    av_expr_free(rcc->rc_eq_eval);
-    av_freep(&rcc->entry);
-
-#if CONFIG_LIBXVID
-    if ((s->flags & CODEC_FLAG_PASS2) && s->avctx->rc_strategy == FF_RC_STRATEGY_XVID)
-        ff_xvid_rate_control_uninit(s);
-#endif
-}
-
-int ff_vbv_update(MpegEncContext *s, int frame_size)
-{
-    RateControlContext *rcc = &s->rc_context;
-    const double fps        = get_fps(s->avctx);
-    const int buffer_size   = s->avctx->rc_buffer_size;
-    const double min_rate   = s->avctx->rc_min_rate / fps;
-    const double max_rate   = s->avctx->rc_max_rate / fps;
-
-    av_dlog(s, "%d %f %d %f %f\n",
-            buffer_size, rcc->buffer_index, frame_size, min_rate, max_rate);
-
-    if (buffer_size) {
-        int left;
-
-        rcc->buffer_index -= frame_size;
-        if (rcc->buffer_index < 0) {
-            av_log(s->avctx, AV_LOG_ERROR, "rc buffer underflow\n");
-            rcc->buffer_index = 0;
-        }
-
-        left = buffer_size - rcc->buffer_index - 1;
-        rcc->buffer_index += av_clip(left, min_rate, max_rate);
-
-        if (rcc->buffer_index > buffer_size) {
-            int stuffing = ceil((rcc->buffer_index - buffer_size) / 8);
-
-            if (stuffing < 4 && s->codec_id == AV_CODEC_ID_MPEG4)
-                stuffing = 4;
-            rcc->buffer_index -= 8 * stuffing;
-
-            if (s->avctx->debug & FF_DEBUG_RC)
-                av_log(s->avctx, AV_LOG_DEBUG, "stuffing %d bytes\n", stuffing);
-
-            return stuffing;
-        }
-    }
-    return 0;
-}
-
-/**
- * Modify the bitrate curve from pass1 for one frame.
- */
-static double get_qscale(MpegEncContext *s, RateControlEntry *rce,
-                         double rate_factor, int frame_num)
-{
-    RateControlContext *rcc = &s->rc_context;
-    AVCodecContext *a       = s->avctx;
-    const int pict_type     = rce->new_pict_type;
-    const double mb_num     = s->mb_num;
-    double q, bits;
-    int i;
-
-    double const_values[] = {
-        M_PI,
-        M_E,
-        rce->i_tex_bits * rce->qscale,
-        rce->p_tex_bits * rce->qscale,
-        (rce->i_tex_bits + rce->p_tex_bits) * (double)rce->qscale,
-        rce->mv_bits / mb_num,
-        rce->pict_type == AV_PICTURE_TYPE_B ? (rce->f_code + rce->b_code) * 0.5 : rce->f_code,
-        rce->i_count / mb_num,
-        rce->mc_mb_var_sum / mb_num,
-        rce->mb_var_sum / mb_num,
-        rce->pict_type == AV_PICTURE_TYPE_I,
-        rce->pict_type == AV_PICTURE_TYPE_P,
-        rce->pict_type == AV_PICTURE_TYPE_B,
-        rcc->qscale_sum[pict_type] / (double)rcc->frame_count[pict_type],
-        a->qcompress,
-#if 0
-        rcc->last_qscale_for[AV_PICTURE_TYPE_I],
-        rcc->last_qscale_for[AV_PICTURE_TYPE_P],
-        rcc->last_qscale_for[AV_PICTURE_TYPE_B],
-        rcc->next_non_b_qscale,
-#endif
-        rcc->i_cplx_sum[AV_PICTURE_TYPE_I] / (double)rcc->frame_count[AV_PICTURE_TYPE_I],
-        rcc->i_cplx_sum[AV_PICTURE_TYPE_P] / (double)rcc->frame_count[AV_PICTURE_TYPE_P],
-        rcc->p_cplx_sum[AV_PICTURE_TYPE_P] / (double)rcc->frame_count[AV_PICTURE_TYPE_P],
-        rcc->p_cplx_sum[AV_PICTURE_TYPE_B] / (double)rcc->frame_count[AV_PICTURE_TYPE_B],
-        (rcc->i_cplx_sum[pict_type] + rcc->p_cplx_sum[pict_type]) / (double)rcc->frame_count[pict_type],
-        0
-    };
-
-    bits = av_expr_eval(rcc->rc_eq_eval, const_values, rce);
-    if (isnan(bits)) {
-        av_log(s->avctx, AV_LOG_ERROR, "Error evaluating rc_eq \"%s\"\n", s->avctx->rc_eq);
-        return -1;
-    }
-
-    rcc->pass1_rc_eq_output_sum += bits;
-    bits *= rate_factor;
-    if (bits < 0.0)
-        bits = 0.0;
-    bits += 1.0; // avoid 1/0 issues
-
-    /* user override */
-    for (i = 0; i < s->avctx->rc_override_count; i++) {
-        RcOverride *rco = s->avctx->rc_override;
-        if (rco[i].start_frame > frame_num)
-            continue;
-        if (rco[i].end_frame < frame_num)
-            continue;
-
-        if (rco[i].qscale)
-            bits = qp2bits(rce, rco[i].qscale);  // FIXME move at end to really force it?
-        else
-            bits *= rco[i].quality_factor;
-    }
-
-    q = bits2qp(rce, bits);
-
-    /* I/B difference */
-    if (pict_type == AV_PICTURE_TYPE_I && s->avctx->i_quant_factor < 0.0)
-        q = -q * s->avctx->i_quant_factor + s->avctx->i_quant_offset;
-    else if (pict_type == AV_PICTURE_TYPE_B && s->avctx->b_quant_factor < 0.0)
-        q = -q * s->avctx->b_quant_factor + s->avctx->b_quant_offset;
-    if (q < 1)
-        q = 1;
-
-    return q;
-}
-
-static double get_diff_limited_q(MpegEncContext *s, RateControlEntry *rce, double q)
-{
-    RateControlContext *rcc   = &s->rc_context;
-    AVCodecContext *a         = s->avctx;
-    const int pict_type       = rce->new_pict_type;
-    const double last_p_q     = rcc->last_qscale_for[AV_PICTURE_TYPE_P];
-    const double last_non_b_q = rcc->last_qscale_for[rcc->last_non_b_pict_type];
-
-    if (pict_type == AV_PICTURE_TYPE_I &&
-        (a->i_quant_factor > 0.0 || rcc->last_non_b_pict_type == AV_PICTURE_TYPE_P))
-        q = last_p_q * FFABS(a->i_quant_factor) + a->i_quant_offset;
-    else if (pict_type == AV_PICTURE_TYPE_B &&
-             a->b_quant_factor > 0.0)
-        q = last_non_b_q * a->b_quant_factor + a->b_quant_offset;
-    if (q < 1)
-        q = 1;
-
-    /* last qscale / qdiff stuff */
-    if (rcc->last_non_b_pict_type == pict_type || pict_type != AV_PICTURE_TYPE_I) {
-        double last_q     = rcc->last_qscale_for[pict_type];
-        const int maxdiff = FF_QP2LAMBDA * a->max_qdiff;
-
-        if (q > last_q + maxdiff)
-            q = last_q + maxdiff;
-        else if (q < last_q - maxdiff)
-            q = last_q - maxdiff;
-    }
-
-    rcc->last_qscale_for[pict_type] = q; // Note we cannot do that after blurring
-
-    if (pict_type != AV_PICTURE_TYPE_B)
-        rcc->last_non_b_pict_type = pict_type;
-
-    return q;
-}
-
-/**
- * Get the qmin & qmax for pict_type.
- */
-static void get_qminmax(int *qmin_ret, int *qmax_ret, MpegEncContext *s, int pict_type)
-{
-    int qmin = s->avctx->lmin;
-    int qmax = s->avctx->lmax;
-
-    assert(qmin <= qmax);
-
-    switch (pict_type) {
-    case AV_PICTURE_TYPE_B:
-        qmin = (int)(qmin * FFABS(s->avctx->b_quant_factor) + s->avctx->b_quant_offset + 0.5);
-        qmax = (int)(qmax * FFABS(s->avctx->b_quant_factor) + s->avctx->b_quant_offset + 0.5);
-        break;
-    case AV_PICTURE_TYPE_I:
-        qmin = (int)(qmin * FFABS(s->avctx->i_quant_factor) + s->avctx->i_quant_offset + 0.5);
-        qmax = (int)(qmax * FFABS(s->avctx->i_quant_factor) + s->avctx->i_quant_offset + 0.5);
-        break;
-    }
-
-    qmin = av_clip(qmin, 1, FF_LAMBDA_MAX);
-    qmax = av_clip(qmax, 1, FF_LAMBDA_MAX);
-
-    if (qmax < qmin)
-        qmax = qmin;
-
-    *qmin_ret = qmin;
-    *qmax_ret = qmax;
-}
-
-static double modify_qscale(MpegEncContext *s, RateControlEntry *rce,
-                            double q, int frame_num)
-{
-    RateControlContext *rcc  = &s->rc_context;
-    const double buffer_size = s->avctx->rc_buffer_size;
-    const double fps         = get_fps(s->avctx);
-    const double min_rate    = s->avctx->rc_min_rate / fps;
-    const double max_rate    = s->avctx->rc_max_rate / fps;
-    const int pict_type      = rce->new_pict_type;
-    int qmin, qmax;
-
-    get_qminmax(&qmin, &qmax, s, pict_type);
-
-    /* modulation */
-    if (s->avctx->rc_qmod_freq &&
-        frame_num % s->avctx->rc_qmod_freq == 0 &&
-        pict_type == AV_PICTURE_TYPE_P)
-        q *= s->avctx->rc_qmod_amp;
-
-    /* buffer overflow/underflow protection */
-    if (buffer_size) {
-        double expected_size = rcc->buffer_index;
-        double q_limit;
-
-        if (min_rate) {
-            double d = 2 * (buffer_size - expected_size) / buffer_size;
-            if (d > 1.0)
-                d = 1.0;
-            else if (d < 0.0001)
-                d = 0.0001;
-            q *= pow(d, 1.0 / s->avctx->rc_buffer_aggressivity);
-
-            q_limit = bits2qp(rce,
-                              FFMAX((min_rate - buffer_size + rcc->buffer_index) *
-                                    s->avctx->rc_min_vbv_overflow_use, 1));
-
-            if (q > q_limit) {
-                if (s->avctx->debug & FF_DEBUG_RC)
-                    av_log(s->avctx, AV_LOG_DEBUG,
-                           "limiting QP %f -> %f\n", q, q_limit);
-                q = q_limit;
-            }
-        }
-
-        if (max_rate) {
-            double d = 2 * expected_size / buffer_size;
-            if (d > 1.0)
-                d = 1.0;
-            else if (d < 0.0001)
-                d = 0.0001;
-            q /= pow(d, 1.0 / s->avctx->rc_buffer_aggressivity);
-
-            q_limit = bits2qp(rce,
-                              FFMAX(rcc->buffer_index *
-                                    s->avctx->rc_max_available_vbv_use,
-                                    1));
-            if (q < q_limit) {
-                if (s->avctx->debug & FF_DEBUG_RC)
-                    av_log(s->avctx, AV_LOG_DEBUG,
-                           "limiting QP %f -> %f\n", q, q_limit);
-                q = q_limit;
-            }
-        }
-    }
-    av_dlog(s, "q:%f max:%f min:%f size:%f index:%f agr:%f\n",
-            q, max_rate, min_rate, buffer_size, rcc->buffer_index,
-            s->avctx->rc_buffer_aggressivity);
-    if (s->avctx->rc_qsquish == 0.0 || qmin == qmax) {
-        if (q < qmin)
-            q = qmin;
-        else if (q > qmax)
-            q = qmax;
-    } else {
-        double min2 = log(qmin);
-        double max2 = log(qmax);
-
-        q  = log(q);
-        q  = (q - min2) / (max2 - min2) - 0.5;
-        q *= -4.0;
-        q  = 1.0 / (1.0 + exp(q));
-        q  = q * (max2 - min2) + min2;
-
-        q = exp(q);
-    }
-
-    return q;
-}
-
-// ----------------------------------
-// 1 Pass Code
-
-static double predict_size(Predictor *p, double q, double var)
-{
-    return p->coeff * var / (q * p->count);
-}
-
-static void update_predictor(Predictor *p, double q, double var, double size)
-{
-    double new_coeff = size * q / (var + 1);
-    if (var < 10)
-        return;
-
-    p->count *= p->decay;
-    p->coeff *= p->decay;
-    p->count++;
-    p->coeff += new_coeff;
-}
-
-static void adaptive_quantization(MpegEncContext *s, double q)
-{
-    int i;
-    const float lumi_masking         = s->avctx->lumi_masking / (128.0 * 128.0);
-    const float dark_masking         = s->avctx->dark_masking / (128.0 * 128.0);
-    const float temp_cplx_masking    = s->avctx->temporal_cplx_masking;
-    const float spatial_cplx_masking = s->avctx->spatial_cplx_masking;
-    const float p_masking            = s->avctx->p_masking;
-    const float border_masking       = s->avctx->border_masking;
-    float bits_sum                   = 0.0;
-    float cplx_sum                   = 0.0;
-    float *cplx_tab                  = s->cplx_tab;
-    float *bits_tab                  = s->bits_tab;
-    const int qmin                   = s->avctx->mb_lmin;
-    const int qmax                   = s->avctx->mb_lmax;
-    Picture *const pic               = &s->current_picture;
-    const int mb_width               = s->mb_width;
-    const int mb_height              = s->mb_height;
-
-    for (i = 0; i < s->mb_num; i++) {
-        const int mb_xy = s->mb_index2xy[i];
-        float temp_cplx = sqrt(pic->mc_mb_var[mb_xy]); // FIXME merge in pow()
-        float spat_cplx = sqrt(pic->mb_var[mb_xy]);
-        const int lumi  = pic->mb_mean[mb_xy];
-        float bits, cplx, factor;
-        int mb_x = mb_xy % s->mb_stride;
-        int mb_y = mb_xy / s->mb_stride;
-        int mb_distance;
-        float mb_factor = 0.0;
-        if (spat_cplx < 4)
-            spat_cplx = 4;              // FIXME finetune
-        if (temp_cplx < 4)
-            temp_cplx = 4;              // FIXME finetune
-
-        if ((s->mb_type[mb_xy] & CANDIDATE_MB_TYPE_INTRA)) { // FIXME hq mode
-            cplx   = spat_cplx;
-            factor = 1.0 + p_masking;
-        } else {
-            cplx   = temp_cplx;
-            factor = pow(temp_cplx, -temp_cplx_masking);
-        }
-        factor *= pow(spat_cplx, -spatial_cplx_masking);
-
-        if (lumi > 127)
-            factor *= (1.0 - (lumi - 128) * (lumi - 128) * lumi_masking);
-        else
-            factor *= (1.0 - (lumi - 128) * (lumi - 128) * dark_masking);
-
-        if (mb_x < mb_width / 5) {
-            mb_distance = mb_width / 5 - mb_x;
-            mb_factor   = (float)mb_distance / (float)(mb_width / 5);
-        } else if (mb_x > 4 * mb_width / 5) {
-            mb_distance = mb_x - 4 * mb_width / 5;
-            mb_factor   = (float)mb_distance / (float)(mb_width / 5);
-        }
-        if (mb_y < mb_height / 5) {
-            mb_distance = mb_height / 5 - mb_y;
-            mb_factor   = FFMAX(mb_factor,
-                                (float)mb_distance / (float)(mb_height / 5));
-        } else if (mb_y > 4 * mb_height / 5) {
-            mb_distance = mb_y - 4 * mb_height / 5;
-            mb_factor   = FFMAX(mb_factor,
-                                (float)mb_distance / (float)(mb_height / 5));
-        }
-
-        factor *= 1.0 - border_masking * mb_factor;
-
-        if (factor < 0.00001)
-            factor = 0.00001;
-
-        bits        = cplx * factor;
-        cplx_sum   += cplx;
-        bits_sum   += bits;
-        cplx_tab[i] = cplx;
-        bits_tab[i] = bits;
-    }
-
-    /* handle qmin/qmax clipping */
-    if (s->flags & CODEC_FLAG_NORMALIZE_AQP) {
-        float factor = bits_sum / cplx_sum;
-        for (i = 0; i < s->mb_num; i++) {
-            float newq = q * cplx_tab[i] / bits_tab[i];
-            newq *= factor;
-
-            if (newq > qmax) {
-                bits_sum -= bits_tab[i];
-                cplx_sum -= cplx_tab[i] * q / qmax;
-            } else if (newq < qmin) {
-                bits_sum -= bits_tab[i];
-                cplx_sum -= cplx_tab[i] * q / qmin;
-            }
-        }
-        if (bits_sum < 0.001)
-            bits_sum = 0.001;
-        if (cplx_sum < 0.001)
-            cplx_sum = 0.001;
-    }
-
-    for (i = 0; i < s->mb_num; i++) {
-        const int mb_xy = s->mb_index2xy[i];
-        float newq      = q * cplx_tab[i] / bits_tab[i];
-        int intq;
-
-        if (s->flags & CODEC_FLAG_NORMALIZE_AQP) {
-            newq *= bits_sum / cplx_sum;
-        }
-
-        intq = (int)(newq + 0.5);
-
-        if (intq > qmax)
-            intq = qmax;
-        else if (intq < qmin)
-            intq = qmin;
-        s->lambda_table[mb_xy] = intq;
-    }
-}
-
-void ff_get_2pass_fcode(MpegEncContext *s)
-{
-    RateControlContext *rcc = &s->rc_context;
-    RateControlEntry *rce   = &rcc->entry[s->picture_number];
-
-    s->f_code = rce->f_code;
-    s->b_code = rce->b_code;
-}
-
-// FIXME rd or at least approx for dquant
-
-float ff_rate_estimate_qscale(MpegEncContext *s, int dry_run)
-{
-    float q;
-    int qmin, qmax;
-    float br_compensation;
-    double diff;
-    double short_term_q;
-    double fps;
-    int picture_number = s->picture_number;
-    int64_t wanted_bits;
-    RateControlContext *rcc = &s->rc_context;
-    AVCodecContext *a       = s->avctx;
-    RateControlEntry local_rce, *rce;
-    double bits;
-    double rate_factor;
-    int var;
-    const int pict_type = s->pict_type;
-    Picture * const pic = &s->current_picture;
-    emms_c();
-
-#if CONFIG_LIBXVID
-    if ((s->flags & CODEC_FLAG_PASS2) &&
-        s->avctx->rc_strategy == FF_RC_STRATEGY_XVID)
-        return ff_xvid_rate_estimate_qscale(s, dry_run);
-#endif
-
-    get_qminmax(&qmin, &qmax, s, pict_type);
-
-    fps = get_fps(s->avctx);
-    /* update predictors */
-    if (picture_number > 2 && !dry_run) {
-        const int last_var = s->last_pict_type == AV_PICTURE_TYPE_I ? rcc->last_mb_var_sum
-                                                                    : rcc->last_mc_mb_var_sum;
-        av_assert1(s->frame_bits >= s->stuffing_bits);
-        update_predictor(&rcc->pred[s->last_pict_type],
-                         rcc->last_qscale,
-                         sqrt(last_var),
-                         s->frame_bits - s->stuffing_bits);
-    }
-
-    if (s->flags & CODEC_FLAG_PASS2) {
-        assert(picture_number >= 0);
-        if (picture_number >= rcc->num_entries) {
-            av_log(s, AV_LOG_ERROR, "Input is longer than 2-pass log file\n");
-            return -1;
-        }
-        rce         = &rcc->entry[picture_number];
-        wanted_bits = rce->expected_bits;
-    } else {
-        Picture *dts_pic;
-        rce = &local_rce;
-
-        /* FIXME add a dts field to AVFrame and ensure it is set and use it
-         * here instead of reordering but the reordering is simpler for now
-         * until H.264 B-pyramid must be handled. */
-        if (s->pict_type == AV_PICTURE_TYPE_B || s->low_delay)
-            dts_pic = s->current_picture_ptr;
-        else
-            dts_pic = s->last_picture_ptr;
-
-        if (!dts_pic || dts_pic->f.pts == AV_NOPTS_VALUE)
-            wanted_bits = (uint64_t)(s->bit_rate * (double)picture_number / fps);
-        else
-            wanted_bits = (uint64_t)(s->bit_rate * (double)dts_pic->f.pts / fps);
-    }
-
-    diff = s->total_bits - wanted_bits;
-    br_compensation = (a->bit_rate_tolerance - diff) / a->bit_rate_tolerance;
-    if (br_compensation <= 0.0)
-        br_compensation = 0.001;
-
-    var = pict_type == AV_PICTURE_TYPE_I ? pic->mb_var_sum : pic->mc_mb_var_sum;
-
-    short_term_q = 0; /* avoid warning */
-    if (s->flags & CODEC_FLAG_PASS2) {
-        if (pict_type != AV_PICTURE_TYPE_I)
-            assert(pict_type == rce->new_pict_type);
-
-        q = rce->new_qscale / br_compensation;
-        av_dlog(s, "%f %f %f last:%d var:%d type:%d//\n", q, rce->new_qscale,
-                br_compensation, s->frame_bits, var, pict_type);
-    } else {
-        rce->pict_type     =
-        rce->new_pict_type = pict_type;
-        rce->mc_mb_var_sum = pic->mc_mb_var_sum;
-        rce->mb_var_sum    = pic->mb_var_sum;
-        rce->qscale        = FF_QP2LAMBDA * 2;
-        rce->f_code        = s->f_code;
-        rce->b_code        = s->b_code;
-        rce->misc_bits     = 1;
-
-        bits = predict_size(&rcc->pred[pict_type], rce->qscale, sqrt(var));
-        if (pict_type == AV_PICTURE_TYPE_I) {
-            rce->i_count    = s->mb_num;
-            rce->i_tex_bits = bits;
-            rce->p_tex_bits = 0;
-            rce->mv_bits    = 0;
-        } else {
-            rce->i_count    = 0;    // FIXME we do know this approx
-            rce->i_tex_bits = 0;
-            rce->p_tex_bits = bits * 0.9;
-            rce->mv_bits    = bits * 0.1;
-        }
-        rcc->i_cplx_sum[pict_type]  += rce->i_tex_bits * rce->qscale;
-        rcc->p_cplx_sum[pict_type]  += rce->p_tex_bits * rce->qscale;
-        rcc->mv_bits_sum[pict_type] += rce->mv_bits;
-        rcc->frame_count[pict_type]++;
-
-        bits        = rce->i_tex_bits + rce->p_tex_bits;
-        rate_factor = rcc->pass1_wanted_bits /
-                      rcc->pass1_rc_eq_output_sum * br_compensation;
-
-        q = get_qscale(s, rce, rate_factor, picture_number);
-        if (q < 0)
-            return -1;
-
-        assert(q > 0.0);
-        q = get_diff_limited_q(s, rce, q);
-        assert(q > 0.0);
-
-        // FIXME type dependent blur like in 2-pass
-        if (pict_type == AV_PICTURE_TYPE_P || s->intra_only) {
-            rcc->short_term_qsum   *= a->qblur;
-            rcc->short_term_qcount *= a->qblur;
-
-            rcc->short_term_qsum += q;
-            rcc->short_term_qcount++;
-            q = short_term_q = rcc->short_term_qsum / rcc->short_term_qcount;
-        }
-        assert(q > 0.0);
-
-        q = modify_qscale(s, rce, q, picture_number);
-
-        rcc->pass1_wanted_bits += s->bit_rate / fps;
-
-        assert(q > 0.0);
-    }
-
-    if (s->avctx->debug & FF_DEBUG_RC) {
-        av_log(s->avctx, AV_LOG_DEBUG,
-               "%c qp:%d<%2.1f<%d %d want:%d total:%d comp:%f st_q:%2.2f "
-               "size:%d var:%d/%d br:%d fps:%d\n",
-               av_get_picture_type_char(pict_type),
-               qmin, q, qmax, picture_number,
-               (int)wanted_bits / 1000, (int)s->total_bits / 1000,
-               br_compensation, short_term_q, s->frame_bits,
-               pic->mb_var_sum, pic->mc_mb_var_sum,
-               s->bit_rate / 1000, (int)fps);
-    }
-
-    if (q < qmin)
-        q = qmin;
-    else if (q > qmax)
-        q = qmax;
-
-    if (s->adaptive_quant)
-        adaptive_quantization(s, q);
-    else
-        q = (int)(q + 0.5);
-
-    if (!dry_run) {
-        rcc->last_qscale        = q;
-        rcc->last_mc_mb_var_sum = pic->mc_mb_var_sum;
-        rcc->last_mb_var_sum    = pic->mb_var_sum;
-    }
-    return q;
-}
-
-// ----------------------------------------------
-// 2-Pass code
-
-static int init_pass2(MpegEncContext *s)
-{
-    RateControlContext *rcc = &s->rc_context;
-    AVCodecContext *a       = s->avctx;
-    int i, toobig;
-    double fps             = get_fps(s->avctx);
-    double complexity[5]   = { 0 }; // approximate bits at quant=1
-    uint64_t const_bits[5] = { 0 }; // quantizer independent bits
-    uint64_t all_const_bits;
-    uint64_t all_available_bits = (uint64_t)(s->bit_rate *
-                                             (double)rcc->num_entries / fps);
-    double rate_factor          = 0;
-    double step;
-    const int filter_size = (int)(a->qblur * 4) | 1;
-    double expected_bits;
-    double *qscale, *blurred_qscale, qscale_sum;
-
-    /* find complexity & const_bits & decide the pict_types */
-    for (i = 0; i < rcc->num_entries; i++) {
-        RateControlEntry *rce = &rcc->entry[i];
-
-        rce->new_pict_type                = rce->pict_type;
-        rcc->i_cplx_sum[rce->pict_type]  += rce->i_tex_bits * rce->qscale;
-        rcc->p_cplx_sum[rce->pict_type]  += rce->p_tex_bits * rce->qscale;
-        rcc->mv_bits_sum[rce->pict_type] += rce->mv_bits;
-        rcc->frame_count[rce->pict_type]++;
-
-        complexity[rce->new_pict_type] += (rce->i_tex_bits + rce->p_tex_bits) *
-                                          (double)rce->qscale;
-        const_bits[rce->new_pict_type] += rce->mv_bits + rce->misc_bits;
-    }
-
-    all_const_bits = const_bits[AV_PICTURE_TYPE_I] +
-                     const_bits[AV_PICTURE_TYPE_P] +
-                     const_bits[AV_PICTURE_TYPE_B];
-
-    if (all_available_bits < all_const_bits) {
-        av_log(s->avctx, AV_LOG_ERROR, "requested bitrate is too low\n");
-        return -1;
-    }
-
-    qscale         = av_malloc(sizeof(double) * rcc->num_entries);
-    blurred_qscale = av_malloc(sizeof(double) * rcc->num_entries);
-    toobig = 0;
-
-    for (step = 256 * 256; step > 0.0000001; step *= 0.5) {
-        expected_bits = 0;
-        rate_factor  += step;
-
-        rcc->buffer_index = s->avctx->rc_buffer_size / 2;
-
-        /* find qscale */
-        for (i = 0; i < rcc->num_entries; i++) {
-            RateControlEntry *rce = &rcc->entry[i];
-
-            qscale[i] = get_qscale(s, &rcc->entry[i], rate_factor, i);
-            rcc->last_qscale_for[rce->pict_type] = qscale[i];
-        }
-        assert(filter_size % 2 == 1);
-
-        /* fixed I/B QP relative to P mode */
-        for (i = FFMAX(0, rcc->num_entries - 300); i < rcc->num_entries; i++) {
-            RateControlEntry *rce = &rcc->entry[i];
-
-            qscale[i] = get_diff_limited_q(s, rce, qscale[i]);
-        }
-
-        for (i = rcc->num_entries - 1; i >= 0; i--) {
-            RateControlEntry *rce = &rcc->entry[i];
-
-            qscale[i] = get_diff_limited_q(s, rce, qscale[i]);
-        }
-
-        /* smooth curve */
-        for (i = 0; i < rcc->num_entries; i++) {
-            RateControlEntry *rce = &rcc->entry[i];
-            const int pict_type   = rce->new_pict_type;
-            int j;
-            double q = 0.0, sum = 0.0;
-
-            for (j = 0; j < filter_size; j++) {
-                int index    = i + j - filter_size / 2;
-                double d     = index - i;
-                double coeff = a->qblur == 0 ? 1.0 : exp(-d * d / (a->qblur * a->qblur));
-
-                if (index < 0 || index >= rcc->num_entries)
-                    continue;
-                if (pict_type != rcc->entry[index].new_pict_type)
-                    continue;
-                q   += qscale[index] * coeff;
-                sum += coeff;
-            }
-            blurred_qscale[i] = q / sum;
-        }
-
-        /* find expected bits */
-        for (i = 0; i < rcc->num_entries; i++) {
-            RateControlEntry *rce = &rcc->entry[i];
-            double bits;
-
-            rce->new_qscale = modify_qscale(s, rce, blurred_qscale[i], i);
-
-            bits  = qp2bits(rce, rce->new_qscale) + rce->mv_bits + rce->misc_bits;
-            bits += 8 * ff_vbv_update(s, bits);
-
-            rce->expected_bits = expected_bits;
-            expected_bits     += bits;
-        }
-
-        av_dlog(s->avctx,
-                "expected_bits: %f all_available_bits: %d rate_factor: %f\n",
-                expected_bits, (int)all_available_bits, rate_factor);
-        if (expected_bits > all_available_bits) {
-            rate_factor -= step;
-            ++toobig;
-        }
-    }
-    av_free(qscale);
-    av_free(blurred_qscale);
-
-    /* check bitrate calculations and print info */
-    qscale_sum = 0.0;
-    for (i = 0; i < rcc->num_entries; i++) {
-        av_dlog(s, "[lavc rc] entry[%d].new_qscale = %.3f  qp = %.3f\n",
-                i,
-                rcc->entry[i].new_qscale,
-                rcc->entry[i].new_qscale / FF_QP2LAMBDA);
-        qscale_sum += av_clip(rcc->entry[i].new_qscale / FF_QP2LAMBDA,
-                              s->avctx->qmin, s->avctx->qmax);
-    }
-    assert(toobig <= 40);
-    av_log(s->avctx, AV_LOG_DEBUG,
-           "[lavc rc] requested bitrate: %d bps  expected bitrate: %d bps\n",
-           s->bit_rate,
-           (int)(expected_bits / ((double)all_available_bits / s->bit_rate)));
-    av_log(s->avctx, AV_LOG_DEBUG,
-           "[lavc rc] estimated target average qp: %.3f\n",
-           (float)qscale_sum / rcc->num_entries);
-    if (toobig == 0) {
-        av_log(s->avctx, AV_LOG_INFO,
-               "[lavc rc] Using all of requested bitrate is not "
-               "necessary for this video with these parameters.\n");
-    } else if (toobig == 40) {
-        av_log(s->avctx, AV_LOG_ERROR,
-               "[lavc rc] Error: bitrate too low for this video "
-               "with these parameters.\n");
-        return -1;
-    } else if (fabs(expected_bits / all_available_bits - 1.0) > 0.01) {
-        av_log(s->avctx, AV_LOG_ERROR,
-               "[lavc rc] Error: 2pass curve failed to converge\n");
-        return -1;
-    }
-
-    return 0;
-}