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diff --git a/ffmpeg1/libavcodec/svq3.c b/ffmpeg1/libavcodec/svq3.c
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+/*
+ * Copyright (c) 2003 The FFmpeg Project
+ *
+ * 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
+ */
+
+/*
+ * How to use this decoder:
+ * SVQ3 data is transported within Apple Quicktime files. Quicktime files
+ * have stsd atoms to describe media trak properties. A stsd atom for a
+ * video trak contains 1 or more ImageDescription atoms. These atoms begin
+ * with the 4-byte length of the atom followed by the codec fourcc. Some
+ * decoders need information in this atom to operate correctly. Such
+ * is the case with SVQ3. In order to get the best use out of this decoder,
+ * the calling app must make the SVQ3 ImageDescription atom available
+ * via the AVCodecContext's extradata[_size] field:
+ *
+ * AVCodecContext.extradata = pointer to ImageDescription, first characters
+ * are expected to be 'S', 'V', 'Q', and '3', NOT the 4-byte atom length
+ * AVCodecContext.extradata_size = size of ImageDescription atom memory
+ * buffer (which will be the same as the ImageDescription atom size field
+ * from the QT file, minus 4 bytes since the length is missing)
+ *
+ * You will know you have these parameters passed correctly when the decoder
+ * correctly decodes this file:
+ * http://samples.mplayerhq.hu/V-codecs/SVQ3/Vertical400kbit.sorenson3.mov
+ */
+#include "internal.h"
+#include "avcodec.h"
+#include "mpegvideo.h"
+#include "h264.h"
+
+#include "h264data.h" // FIXME FIXME FIXME
+
+#include "h264_mvpred.h"
+#include "golomb.h"
+#include "hpeldsp.h"
+#include "rectangle.h"
+#include "vdpau_internal.h"
+
+#if CONFIG_ZLIB
+#include <zlib.h>
+#endif
+
+#include "svq1.h"
+#include "svq3.h"
+
+/**
+ * @file
+ * svq3 decoder.
+ */
+
+typedef struct {
+ H264Context h;
+ HpelDSPContext hdsp;
+ Picture *cur_pic;
+ Picture *next_pic;
+ Picture *last_pic;
+ int halfpel_flag;
+ int thirdpel_flag;
+ int unknown_flag;
+ int next_slice_index;
+ uint32_t watermark_key;
+ uint8_t *buf;
+ int buf_size;
+ int adaptive_quant;
+ int next_p_frame_damaged;
+ int h_edge_pos;
+ int v_edge_pos;
+ int last_frame_output;
+} SVQ3Context;
+
+#define FULLPEL_MODE 1
+#define HALFPEL_MODE 2
+#define THIRDPEL_MODE 3
+#define PREDICT_MODE 4
+
+/* dual scan (from some older h264 draft)
+ * o-->o-->o o
+ * | /|
+ * o o o / o
+ * | / | |/ |
+ * o o o o
+ * /
+ * o-->o-->o-->o
+ */
+static const uint8_t svq3_scan[16] = {
+ 0 + 0 * 4, 1 + 0 * 4, 2 + 0 * 4, 2 + 1 * 4,
+ 2 + 2 * 4, 3 + 0 * 4, 3 + 1 * 4, 3 + 2 * 4,
+ 0 + 1 * 4, 0 + 2 * 4, 1 + 1 * 4, 1 + 2 * 4,
+ 0 + 3 * 4, 1 + 3 * 4, 2 + 3 * 4, 3 + 3 * 4,
+};
+
+static const uint8_t svq3_pred_0[25][2] = {
+ { 0, 0 },
+ { 1, 0 }, { 0, 1 },
+ { 0, 2 }, { 1, 1 }, { 2, 0 },
+ { 3, 0 }, { 2, 1 }, { 1, 2 }, { 0, 3 },
+ { 0, 4 }, { 1, 3 }, { 2, 2 }, { 3, 1 }, { 4, 0 },
+ { 4, 1 }, { 3, 2 }, { 2, 3 }, { 1, 4 },
+ { 2, 4 }, { 3, 3 }, { 4, 2 },
+ { 4, 3 }, { 3, 4 },
+ { 4, 4 }
+};
+
+static const int8_t svq3_pred_1[6][6][5] = {
+ { { 2, -1, -1, -1, -1 }, { 2, 1, -1, -1, -1 }, { 1, 2, -1, -1, -1 },
+ { 2, 1, -1, -1, -1 }, { 1, 2, -1, -1, -1 }, { 1, 2, -1, -1, -1 } },
+ { { 0, 2, -1, -1, -1 }, { 0, 2, 1, 4, 3 }, { 0, 1, 2, 4, 3 },
+ { 0, 2, 1, 4, 3 }, { 2, 0, 1, 3, 4 }, { 0, 4, 2, 1, 3 } },
+ { { 2, 0, -1, -1, -1 }, { 2, 1, 0, 4, 3 }, { 1, 2, 4, 0, 3 },
+ { 2, 1, 0, 4, 3 }, { 2, 1, 4, 3, 0 }, { 1, 2, 4, 0, 3 } },
+ { { 2, 0, -1, -1, -1 }, { 2, 0, 1, 4, 3 }, { 1, 2, 0, 4, 3 },
+ { 2, 1, 0, 4, 3 }, { 2, 1, 3, 4, 0 }, { 2, 4, 1, 0, 3 } },
+ { { 0, 2, -1, -1, -1 }, { 0, 2, 1, 3, 4 }, { 1, 2, 3, 0, 4 },
+ { 2, 0, 1, 3, 4 }, { 2, 1, 3, 0, 4 }, { 2, 0, 4, 3, 1 } },
+ { { 0, 2, -1, -1, -1 }, { 0, 2, 4, 1, 3 }, { 1, 4, 2, 0, 3 },
+ { 4, 2, 0, 1, 3 }, { 2, 0, 1, 4, 3 }, { 4, 2, 1, 0, 3 } },
+};
+
+static const struct {
+ uint8_t run;
+ uint8_t level;
+} svq3_dct_tables[2][16] = {
+ { { 0, 0 }, { 0, 1 }, { 1, 1 }, { 2, 1 }, { 0, 2 }, { 3, 1 }, { 4, 1 }, { 5, 1 },
+ { 0, 3 }, { 1, 2 }, { 2, 2 }, { 6, 1 }, { 7, 1 }, { 8, 1 }, { 9, 1 }, { 0, 4 } },
+ { { 0, 0 }, { 0, 1 }, { 1, 1 }, { 0, 2 }, { 2, 1 }, { 0, 3 }, { 0, 4 }, { 0, 5 },
+ { 3, 1 }, { 4, 1 }, { 1, 2 }, { 1, 3 }, { 0, 6 }, { 0, 7 }, { 0, 8 }, { 0, 9 } }
+};
+
+static const uint32_t svq3_dequant_coeff[32] = {
+ 3881, 4351, 4890, 5481, 6154, 6914, 7761, 8718,
+ 9781, 10987, 12339, 13828, 15523, 17435, 19561, 21873,
+ 24552, 27656, 30847, 34870, 38807, 43747, 49103, 54683,
+ 61694, 68745, 77615, 89113, 100253, 109366, 126635, 141533
+};
+
+void ff_svq3_luma_dc_dequant_idct_c(int16_t *output, int16_t *input, int qp)
+{
+ const int qmul = svq3_dequant_coeff[qp];
+#define stride 16
+ int i;
+ int temp[16];
+ static const uint8_t x_offset[4] = { 0, 1 * stride, 4 * stride, 5 * stride };
+
+ for (i = 0; i < 4; i++) {
+ const int z0 = 13 * (input[4 * i + 0] + input[4 * i + 2]);
+ const int z1 = 13 * (input[4 * i + 0] - input[4 * i + 2]);
+ const int z2 = 7 * input[4 * i + 1] - 17 * input[4 * i + 3];
+ const int z3 = 17 * input[4 * i + 1] + 7 * input[4 * i + 3];
+
+ temp[4 * i + 0] = z0 + z3;
+ temp[4 * i + 1] = z1 + z2;
+ temp[4 * i + 2] = z1 - z2;
+ temp[4 * i + 3] = z0 - z3;
+ }
+
+ for (i = 0; i < 4; i++) {
+ const int offset = x_offset[i];
+ const int z0 = 13 * (temp[4 * 0 + i] + temp[4 * 2 + i]);
+ const int z1 = 13 * (temp[4 * 0 + i] - temp[4 * 2 + i]);
+ const int z2 = 7 * temp[4 * 1 + i] - 17 * temp[4 * 3 + i];
+ const int z3 = 17 * temp[4 * 1 + i] + 7 * temp[4 * 3 + i];
+
+ output[stride * 0 + offset] = (z0 + z3) * qmul + 0x80000 >> 20;
+ output[stride * 2 + offset] = (z1 + z2) * qmul + 0x80000 >> 20;
+ output[stride * 8 + offset] = (z1 - z2) * qmul + 0x80000 >> 20;
+ output[stride * 10 + offset] = (z0 - z3) * qmul + 0x80000 >> 20;
+ }
+}
+#undef stride
+
+void ff_svq3_add_idct_c(uint8_t *dst, int16_t *block,
+ int stride, int qp, int dc)
+{
+ const int qmul = svq3_dequant_coeff[qp];
+ int i;
+
+ if (dc) {
+ dc = 13 * 13 * (dc == 1 ? 1538 * block[0]
+ : qmul * (block[0] >> 3) / 2);
+ block[0] = 0;
+ }
+
+ for (i = 0; i < 4; i++) {
+ const int z0 = 13 * (block[0 + 4 * i] + block[2 + 4 * i]);
+ const int z1 = 13 * (block[0 + 4 * i] - block[2 + 4 * i]);
+ const int z2 = 7 * block[1 + 4 * i] - 17 * block[3 + 4 * i];
+ const int z3 = 17 * block[1 + 4 * i] + 7 * block[3 + 4 * i];
+
+ block[0 + 4 * i] = z0 + z3;
+ block[1 + 4 * i] = z1 + z2;
+ block[2 + 4 * i] = z1 - z2;
+ block[3 + 4 * i] = z0 - z3;
+ }
+
+ for (i = 0; i < 4; i++) {
+ const int z0 = 13 * (block[i + 4 * 0] + block[i + 4 * 2]);
+ const int z1 = 13 * (block[i + 4 * 0] - block[i + 4 * 2]);
+ const int z2 = 7 * block[i + 4 * 1] - 17 * block[i + 4 * 3];
+ const int z3 = 17 * block[i + 4 * 1] + 7 * block[i + 4 * 3];
+ const int rr = (dc + 0x80000);
+
+ dst[i + stride * 0] = av_clip_uint8(dst[i + stride * 0] + ((z0 + z3) * qmul + rr >> 20));
+ dst[i + stride * 1] = av_clip_uint8(dst[i + stride * 1] + ((z1 + z2) * qmul + rr >> 20));
+ dst[i + stride * 2] = av_clip_uint8(dst[i + stride * 2] + ((z1 - z2) * qmul + rr >> 20));
+ dst[i + stride * 3] = av_clip_uint8(dst[i + stride * 3] + ((z0 - z3) * qmul + rr >> 20));
+ }
+
+ memset(block, 0, 16 * sizeof(int16_t));
+}
+
+static inline int svq3_decode_block(GetBitContext *gb, int16_t *block,
+ int index, const int type)
+{
+ static const uint8_t *const scan_patterns[4] =
+ { luma_dc_zigzag_scan, zigzag_scan, svq3_scan, chroma_dc_scan };
+
+ int run, level, sign, limit;
+ unsigned vlc;
+ const int intra = 3 * type >> 2;
+ const uint8_t *const scan = scan_patterns[type];
+
+ for (limit = (16 >> intra); index < 16; index = limit, limit += 8) {
+ for (; (vlc = svq3_get_ue_golomb(gb)) != 0; index++) {
+ if ((int32_t)vlc < 0)
+ return -1;
+
+ sign = (vlc & 1) ? 0 : -1;
+ vlc = vlc + 1 >> 1;
+
+ if (type == 3) {
+ if (vlc < 3) {
+ run = 0;
+ level = vlc;
+ } else if (vlc < 4) {
+ run = 1;
+ level = 1;
+ } else {
+ run = vlc & 0x3;
+ level = (vlc + 9 >> 2) - run;
+ }
+ } else {
+ if (vlc < 16U) {
+ run = svq3_dct_tables[intra][vlc].run;
+ level = svq3_dct_tables[intra][vlc].level;
+ } else if (intra) {
+ run = vlc & 0x7;
+ level = (vlc >> 3) + ((run == 0) ? 8 : ((run < 2) ? 2 : ((run < 5) ? 0 : -1)));
+ } else {
+ run = vlc & 0xF;
+ level = (vlc >> 4) + ((run == 0) ? 4 : ((run < 3) ? 2 : ((run < 10) ? 1 : 0)));
+ }
+ }
+
+
+ if ((index += run) >= limit)
+ return -1;
+
+ block[scan[index]] = (level ^ sign) - sign;
+ }
+
+ if (type != 2) {
+ break;
+ }
+ }
+
+ return 0;
+}
+
+static inline void svq3_mc_dir_part(SVQ3Context *s,
+ int x, int y, int width, int height,
+ int mx, int my, int dxy,
+ int thirdpel, int dir, int avg)
+{
+ H264Context *h = &s->h;
+ const Picture *pic = (dir == 0) ? s->last_pic : s->next_pic;
+ uint8_t *src, *dest;
+ int i, emu = 0;
+ int blocksize = 2 - (width >> 3); // 16->0, 8->1, 4->2
+
+ mx += x;
+ my += y;
+
+ if (mx < 0 || mx >= s->h_edge_pos - width - 1 ||
+ my < 0 || my >= s->v_edge_pos - height - 1) {
+ emu = 1;
+ mx = av_clip(mx, -16, s->h_edge_pos - width + 15);
+ my = av_clip(my, -16, s->v_edge_pos - height + 15);
+ }
+
+ /* form component predictions */
+ dest = h->cur_pic.f.data[0] + x + y * h->linesize;
+ src = pic->f.data[0] + mx + my * h->linesize;
+
+ if (emu) {
+ h->vdsp.emulated_edge_mc(h->edge_emu_buffer, src, h->linesize,
+ width + 1, height + 1,
+ mx, my, s->h_edge_pos, s->v_edge_pos);
+ src = h->edge_emu_buffer;
+ }
+ if (thirdpel)
+ (avg ? h->dsp.avg_tpel_pixels_tab
+ : h->dsp.put_tpel_pixels_tab)[dxy](dest, src, h->linesize,
+ width, height);
+ else
+ (avg ? s->hdsp.avg_pixels_tab
+ : s->hdsp.put_pixels_tab)[blocksize][dxy](dest, src, h->linesize,
+ height);
+
+ if (!(h->flags & CODEC_FLAG_GRAY)) {
+ mx = mx + (mx < (int) x) >> 1;
+ my = my + (my < (int) y) >> 1;
+ width = width >> 1;
+ height = height >> 1;
+ blocksize++;
+
+ for (i = 1; i < 3; i++) {
+ dest = h->cur_pic.f.data[i] + (x >> 1) + (y >> 1) * h->uvlinesize;
+ src = pic->f.data[i] + mx + my * h->uvlinesize;
+
+ if (emu) {
+ h->vdsp.emulated_edge_mc(h->edge_emu_buffer, src, h->uvlinesize,
+ width + 1, height + 1,
+ mx, my, (s->h_edge_pos >> 1),
+ s->v_edge_pos >> 1);
+ src = h->edge_emu_buffer;
+ }
+ if (thirdpel)
+ (avg ? h->dsp.avg_tpel_pixels_tab
+ : h->dsp.put_tpel_pixels_tab)[dxy](dest, src,
+ h->uvlinesize,
+ width, height);
+ else
+ (avg ? s->hdsp.avg_pixels_tab
+ : s->hdsp.put_pixels_tab)[blocksize][dxy](dest, src,
+ h->uvlinesize,
+ height);
+ }
+ }
+}
+
+static inline int svq3_mc_dir(SVQ3Context *s, int size, int mode,
+ int dir, int avg)
+{
+ int i, j, k, mx, my, dx, dy, x, y;
+ H264Context *h = &s->h;
+ const int part_width = ((size & 5) == 4) ? 4 : 16 >> (size & 1);
+ const int part_height = 16 >> ((unsigned)(size + 1) / 3);
+ const int extra_width = (mode == PREDICT_MODE) ? -16 * 6 : 0;
+ const int h_edge_pos = 6 * (s->h_edge_pos - part_width) - extra_width;
+ const int v_edge_pos = 6 * (s->v_edge_pos - part_height) - extra_width;
+
+ for (i = 0; i < 16; i += part_height)
+ for (j = 0; j < 16; j += part_width) {
+ const int b_xy = (4 * h->mb_x + (j >> 2)) +
+ (4 * h->mb_y + (i >> 2)) * h->b_stride;
+ int dxy;
+ x = 16 * h->mb_x + j;
+ y = 16 * h->mb_y + i;
+ k = (j >> 2 & 1) + (i >> 1 & 2) +
+ (j >> 1 & 4) + (i & 8);
+
+ if (mode != PREDICT_MODE) {
+ pred_motion(h, k, part_width >> 2, dir, 1, &mx, &my);
+ } else {
+ mx = s->next_pic->motion_val[0][b_xy][0] << 1;
+ my = s->next_pic->motion_val[0][b_xy][1] << 1;
+
+ if (dir == 0) {
+ mx = mx * h->frame_num_offset /
+ h->prev_frame_num_offset + 1 >> 1;
+ my = my * h->frame_num_offset /
+ h->prev_frame_num_offset + 1 >> 1;
+ } else {
+ mx = mx * (h->frame_num_offset - h->prev_frame_num_offset) /
+ h->prev_frame_num_offset + 1 >> 1;
+ my = my * (h->frame_num_offset - h->prev_frame_num_offset) /
+ h->prev_frame_num_offset + 1 >> 1;
+ }
+ }
+
+ /* clip motion vector prediction to frame border */
+ mx = av_clip(mx, extra_width - 6 * x, h_edge_pos - 6 * x);
+ my = av_clip(my, extra_width - 6 * y, v_edge_pos - 6 * y);
+
+ /* get (optional) motion vector differential */
+ if (mode == PREDICT_MODE) {
+ dx = dy = 0;
+ } else {
+ dy = svq3_get_se_golomb(&h->gb);
+ dx = svq3_get_se_golomb(&h->gb);
+
+ if (dx == INVALID_VLC || dy == INVALID_VLC) {
+ av_log(h->avctx, AV_LOG_ERROR, "invalid MV vlc\n");
+ return -1;
+ }
+ }
+
+ /* compute motion vector */
+ if (mode == THIRDPEL_MODE) {
+ int fx, fy;
+ mx = (mx + 1 >> 1) + dx;
+ my = (my + 1 >> 1) + dy;
+ fx = (unsigned)(mx + 0x3000) / 3 - 0x1000;
+ fy = (unsigned)(my + 0x3000) / 3 - 0x1000;
+ dxy = (mx - 3 * fx) + 4 * (my - 3 * fy);
+
+ svq3_mc_dir_part(s, x, y, part_width, part_height,
+ fx, fy, dxy, 1, dir, avg);
+ mx += mx;
+ my += my;
+ } else if (mode == HALFPEL_MODE || mode == PREDICT_MODE) {
+ mx = (unsigned)(mx + 1 + 0x3000) / 3 + dx - 0x1000;
+ my = (unsigned)(my + 1 + 0x3000) / 3 + dy - 0x1000;
+ dxy = (mx & 1) + 2 * (my & 1);
+
+ svq3_mc_dir_part(s, x, y, part_width, part_height,
+ mx >> 1, my >> 1, dxy, 0, dir, avg);
+ mx *= 3;
+ my *= 3;
+ } else {
+ mx = (unsigned)(mx + 3 + 0x6000) / 6 + dx - 0x1000;
+ my = (unsigned)(my + 3 + 0x6000) / 6 + dy - 0x1000;
+
+ svq3_mc_dir_part(s, x, y, part_width, part_height,
+ mx, my, 0, 0, dir, avg);
+ mx *= 6;
+ my *= 6;
+ }
+
+ /* update mv_cache */
+ if (mode != PREDICT_MODE) {
+ int32_t mv = pack16to32(mx, my);
+
+ if (part_height == 8 && i < 8) {
+ AV_WN32A(h->mv_cache[dir][scan8[k] + 1 * 8], mv);
+
+ if (part_width == 8 && j < 8)
+ AV_WN32A(h->mv_cache[dir][scan8[k] + 1 + 1 * 8], mv);
+ }
+ if (part_width == 8 && j < 8)
+ AV_WN32A(h->mv_cache[dir][scan8[k] + 1], mv);
+ if (part_width == 4 || part_height == 4)
+ AV_WN32A(h->mv_cache[dir][scan8[k]], mv);
+ }
+
+ /* write back motion vectors */
+ fill_rectangle(h->cur_pic.motion_val[dir][b_xy],
+ part_width >> 2, part_height >> 2, h->b_stride,
+ pack16to32(mx, my), 4);
+ }
+
+ return 0;
+}
+
+static int svq3_decode_mb(SVQ3Context *s, unsigned int mb_type)
+{
+ H264Context *h = &s->h;
+ int i, j, k, m, dir, mode;
+ int cbp = 0;
+ uint32_t vlc;
+ int8_t *top, *left;
+ const int mb_xy = h->mb_xy;
+ const int b_xy = 4 * h->mb_x + 4 * h->mb_y * h->b_stride;
+
+ h->top_samples_available = (h->mb_y == 0) ? 0x33FF : 0xFFFF;
+ h->left_samples_available = (h->mb_x == 0) ? 0x5F5F : 0xFFFF;
+ h->topright_samples_available = 0xFFFF;
+
+ if (mb_type == 0) { /* SKIP */
+ if (h->pict_type == AV_PICTURE_TYPE_P ||
+ s->next_pic->mb_type[mb_xy] == -1) {
+ svq3_mc_dir_part(s, 16 * h->mb_x, 16 * h->mb_y, 16, 16,
+ 0, 0, 0, 0, 0, 0);
+
+ if (h->pict_type == AV_PICTURE_TYPE_B)
+ svq3_mc_dir_part(s, 16 * h->mb_x, 16 * h->mb_y, 16, 16,
+ 0, 0, 0, 0, 1, 1);
+
+ mb_type = MB_TYPE_SKIP;
+ } else {
+ mb_type = FFMIN(s->next_pic->mb_type[mb_xy], 6);
+ if (svq3_mc_dir(s, mb_type, PREDICT_MODE, 0, 0) < 0)
+ return -1;
+ if (svq3_mc_dir(s, mb_type, PREDICT_MODE, 1, 1) < 0)
+ return -1;
+
+ mb_type = MB_TYPE_16x16;
+ }
+ } else if (mb_type < 8) { /* INTER */
+ if (s->thirdpel_flag && s->halfpel_flag == !get_bits1(&h->gb))
+ mode = THIRDPEL_MODE;
+ else if (s->halfpel_flag &&
+ s->thirdpel_flag == !get_bits1(&h->gb))
+ mode = HALFPEL_MODE;
+ else
+ mode = FULLPEL_MODE;
+
+ /* fill caches */
+ /* note ref_cache should contain here:
+ * ????????
+ * ???11111
+ * N??11111
+ * N??11111
+ * N??11111
+ */
+
+ for (m = 0; m < 2; m++) {
+ if (h->mb_x > 0 && h->intra4x4_pred_mode[h->mb2br_xy[mb_xy - 1] + 6] != -1) {
+ for (i = 0; i < 4; i++)
+ AV_COPY32(h->mv_cache[m][scan8[0] - 1 + i * 8],
+ h->cur_pic.motion_val[m][b_xy - 1 + i * h->b_stride]);
+ } else {
+ for (i = 0; i < 4; i++)
+ AV_ZERO32(h->mv_cache[m][scan8[0] - 1 + i * 8]);
+ }
+ if (h->mb_y > 0) {
+ memcpy(h->mv_cache[m][scan8[0] - 1 * 8],
+ h->cur_pic.motion_val[m][b_xy - h->b_stride],
+ 4 * 2 * sizeof(int16_t));
+ memset(&h->ref_cache[m][scan8[0] - 1 * 8],
+ (h->intra4x4_pred_mode[h->mb2br_xy[mb_xy - h->mb_stride]] == -1) ? PART_NOT_AVAILABLE : 1, 4);
+
+ if (h->mb_x < h->mb_width - 1) {
+ AV_COPY32(h->mv_cache[m][scan8[0] + 4 - 1 * 8],
+ h->cur_pic.motion_val[m][b_xy - h->b_stride + 4]);
+ h->ref_cache[m][scan8[0] + 4 - 1 * 8] =
+ (h->intra4x4_pred_mode[h->mb2br_xy[mb_xy - h->mb_stride + 1] + 6] == -1 ||
+ h->intra4x4_pred_mode[h->mb2br_xy[mb_xy - h->mb_stride]] == -1) ? PART_NOT_AVAILABLE : 1;
+ } else
+ h->ref_cache[m][scan8[0] + 4 - 1 * 8] = PART_NOT_AVAILABLE;
+ if (h->mb_x > 0) {
+ AV_COPY32(h->mv_cache[m][scan8[0] - 1 - 1 * 8],
+ h->cur_pic.motion_val[m][b_xy - h->b_stride - 1]);
+ h->ref_cache[m][scan8[0] - 1 - 1 * 8] =
+ (h->intra4x4_pred_mode[h->mb2br_xy[mb_xy - h->mb_stride - 1] + 3] == -1) ? PART_NOT_AVAILABLE : 1;
+ } else
+ h->ref_cache[m][scan8[0] - 1 - 1 * 8] = PART_NOT_AVAILABLE;
+ } else
+ memset(&h->ref_cache[m][scan8[0] - 1 * 8 - 1],
+ PART_NOT_AVAILABLE, 8);
+
+ if (h->pict_type != AV_PICTURE_TYPE_B)
+ break;
+ }
+
+ /* decode motion vector(s) and form prediction(s) */
+ if (h->pict_type == AV_PICTURE_TYPE_P) {
+ if (svq3_mc_dir(s, mb_type - 1, mode, 0, 0) < 0)
+ return -1;
+ } else { /* AV_PICTURE_TYPE_B */
+ if (mb_type != 2) {
+ if (svq3_mc_dir(s, 0, mode, 0, 0) < 0)
+ return -1;
+ } else {
+ for (i = 0; i < 4; i++)
+ memset(h->cur_pic.motion_val[0][b_xy + i * h->b_stride],
+ 0, 4 * 2 * sizeof(int16_t));
+ }
+ if (mb_type != 1) {
+ if (svq3_mc_dir(s, 0, mode, 1, mb_type == 3) < 0)
+ return -1;
+ } else {
+ for (i = 0; i < 4; i++)
+ memset(h->cur_pic.motion_val[1][b_xy + i * h->b_stride],
+ 0, 4 * 2 * sizeof(int16_t));
+ }
+ }
+
+ mb_type = MB_TYPE_16x16;
+ } else if (mb_type == 8 || mb_type == 33) { /* INTRA4x4 */
+ memset(h->intra4x4_pred_mode_cache, -1, 8 * 5 * sizeof(int8_t));
+
+ if (mb_type == 8) {
+ if (h->mb_x > 0) {
+ for (i = 0; i < 4; i++)
+ h->intra4x4_pred_mode_cache[scan8[0] - 1 + i * 8] = h->intra4x4_pred_mode[h->mb2br_xy[mb_xy - 1] + 6 - i];
+ if (h->intra4x4_pred_mode_cache[scan8[0] - 1] == -1)
+ h->left_samples_available = 0x5F5F;
+ }
+ if (h->mb_y > 0) {
+ h->intra4x4_pred_mode_cache[4 + 8 * 0] = h->intra4x4_pred_mode[h->mb2br_xy[mb_xy - h->mb_stride] + 0];
+ h->intra4x4_pred_mode_cache[5 + 8 * 0] = h->intra4x4_pred_mode[h->mb2br_xy[mb_xy - h->mb_stride] + 1];
+ h->intra4x4_pred_mode_cache[6 + 8 * 0] = h->intra4x4_pred_mode[h->mb2br_xy[mb_xy - h->mb_stride] + 2];
+ h->intra4x4_pred_mode_cache[7 + 8 * 0] = h->intra4x4_pred_mode[h->mb2br_xy[mb_xy - h->mb_stride] + 3];
+
+ if (h->intra4x4_pred_mode_cache[4 + 8 * 0] == -1)
+ h->top_samples_available = 0x33FF;
+ }
+
+ /* decode prediction codes for luma blocks */
+ for (i = 0; i < 16; i += 2) {
+ vlc = svq3_get_ue_golomb(&h->gb);
+
+ if (vlc >= 25U) {
+ av_log(h->avctx, AV_LOG_ERROR, "luma prediction:%d\n", vlc);
+ return -1;
+ }
+
+ left = &h->intra4x4_pred_mode_cache[scan8[i] - 1];
+ top = &h->intra4x4_pred_mode_cache[scan8[i] - 8];
+
+ left[1] = svq3_pred_1[top[0] + 1][left[0] + 1][svq3_pred_0[vlc][0]];
+ left[2] = svq3_pred_1[top[1] + 1][left[1] + 1][svq3_pred_0[vlc][1]];
+
+ if (left[1] == -1 || left[2] == -1) {
+ av_log(h->avctx, AV_LOG_ERROR, "weird prediction\n");
+ return -1;
+ }
+ }
+ } else { /* mb_type == 33, DC_128_PRED block type */
+ for (i = 0; i < 4; i++)
+ memset(&h->intra4x4_pred_mode_cache[scan8[0] + 8 * i], DC_PRED, 4);
+ }
+
+ write_back_intra_pred_mode(h);
+
+ if (mb_type == 8) {
+ ff_h264_check_intra4x4_pred_mode(h);
+
+ h->top_samples_available = (h->mb_y == 0) ? 0x33FF : 0xFFFF;
+ h->left_samples_available = (h->mb_x == 0) ? 0x5F5F : 0xFFFF;
+ } else {
+ for (i = 0; i < 4; i++)
+ memset(&h->intra4x4_pred_mode_cache[scan8[0] + 8 * i], DC_128_PRED, 4);
+
+ h->top_samples_available = 0x33FF;
+ h->left_samples_available = 0x5F5F;
+ }
+
+ mb_type = MB_TYPE_INTRA4x4;
+ } else { /* INTRA16x16 */
+ dir = i_mb_type_info[mb_type - 8].pred_mode;
+ dir = (dir >> 1) ^ 3 * (dir & 1) ^ 1;
+
+ if ((h->intra16x16_pred_mode = ff_h264_check_intra_pred_mode(h, dir, 0)) == -1) {
+ av_log(h->avctx, AV_LOG_ERROR, "check_intra_pred_mode = -1\n");
+ return -1;
+ }
+
+ cbp = i_mb_type_info[mb_type - 8].cbp;
+ mb_type = MB_TYPE_INTRA16x16;
+ }
+
+ if (!IS_INTER(mb_type) && h->pict_type != AV_PICTURE_TYPE_I) {
+ for (i = 0; i < 4; i++)
+ memset(h->cur_pic.motion_val[0][b_xy + i * h->b_stride],
+ 0, 4 * 2 * sizeof(int16_t));
+ if (h->pict_type == AV_PICTURE_TYPE_B) {
+ for (i = 0; i < 4; i++)
+ memset(h->cur_pic.motion_val[1][b_xy + i * h->b_stride],
+ 0, 4 * 2 * sizeof(int16_t));
+ }
+ }
+ if (!IS_INTRA4x4(mb_type)) {
+ memset(h->intra4x4_pred_mode + h->mb2br_xy[mb_xy], DC_PRED, 8);
+ }
+ if (!IS_SKIP(mb_type) || h->pict_type == AV_PICTURE_TYPE_B) {
+ memset(h->non_zero_count_cache + 8, 0, 14 * 8 * sizeof(uint8_t));
+ }
+
+ if (!IS_INTRA16x16(mb_type) &&
+ (!IS_SKIP(mb_type) || h->pict_type == AV_PICTURE_TYPE_B)) {
+ if ((vlc = svq3_get_ue_golomb(&h->gb)) >= 48U){
+ av_log(h->avctx, AV_LOG_ERROR, "cbp_vlc=%d\n", vlc);
+ return -1;
+ }
+
+ cbp = IS_INTRA(mb_type) ? golomb_to_intra4x4_cbp[vlc]
+ : golomb_to_inter_cbp[vlc];
+ }
+ if (IS_INTRA16x16(mb_type) ||
+ (h->pict_type != AV_PICTURE_TYPE_I && s->adaptive_quant && cbp)) {
+ h->qscale += svq3_get_se_golomb(&h->gb);
+
+ if (h->qscale > 31u) {
+ av_log(h->avctx, AV_LOG_ERROR, "qscale:%d\n", h->qscale);
+ return -1;
+ }
+ }
+ if (IS_INTRA16x16(mb_type)) {
+ AV_ZERO128(h->mb_luma_dc[0] + 0);
+ AV_ZERO128(h->mb_luma_dc[0] + 8);
+ if (svq3_decode_block(&h->gb, h->mb_luma_dc[0], 0, 1)) {
+ av_log(h->avctx, AV_LOG_ERROR,
+ "error while decoding intra luma dc\n");
+ return -1;
+ }
+ }
+
+ if (cbp) {
+ const int index = IS_INTRA16x16(mb_type) ? 1 : 0;
+ const int type = ((h->qscale < 24 && IS_INTRA4x4(mb_type)) ? 2 : 1);
+
+ for (i = 0; i < 4; i++)
+ if ((cbp & (1 << i))) {
+ for (j = 0; j < 4; j++) {
+ k = index ? (1 * (j & 1) + 2 * (i & 1) +
+ 2 * (j & 2) + 4 * (i & 2))
+ : (4 * i + j);
+ h->non_zero_count_cache[scan8[k]] = 1;
+
+ if (svq3_decode_block(&h->gb, &h->mb[16 * k], index, type)) {
+ av_log(h->avctx, AV_LOG_ERROR,
+ "error while decoding block\n");
+ return -1;
+ }
+ }
+ }
+
+ if ((cbp & 0x30)) {
+ for (i = 1; i < 3; ++i)
+ if (svq3_decode_block(&h->gb, &h->mb[16 * 16 * i], 0, 3)) {
+ av_log(h->avctx, AV_LOG_ERROR,
+ "error while decoding chroma dc block\n");
+ return -1;
+ }
+
+ if ((cbp & 0x20)) {
+ for (i = 1; i < 3; i++) {
+ for (j = 0; j < 4; j++) {
+ k = 16 * i + j;
+ h->non_zero_count_cache[scan8[k]] = 1;
+
+ if (svq3_decode_block(&h->gb, &h->mb[16 * k], 1, 1)) {
+ av_log(h->avctx, AV_LOG_ERROR,
+ "error while decoding chroma ac block\n");
+ return -1;
+ }
+ }
+ }
+ }
+ }
+ }
+
+ h->cbp = cbp;
+ h->cur_pic.mb_type[mb_xy] = mb_type;
+
+ if (IS_INTRA(mb_type))
+ h->chroma_pred_mode = ff_h264_check_intra_pred_mode(h, DC_PRED8x8, 1);
+
+ return 0;
+}
+
+static int svq3_decode_slice_header(AVCodecContext *avctx)
+{
+ SVQ3Context *s = avctx->priv_data;
+ H264Context *h = &s->h;
+ const int mb_xy = h->mb_xy;
+ int i, header;
+ unsigned slice_id;
+
+ header = get_bits(&h->gb, 8);
+
+ if (((header & 0x9F) != 1 && (header & 0x9F) != 2) || (header & 0x60) == 0) {
+ /* TODO: what? */
+ av_log(avctx, AV_LOG_ERROR, "unsupported slice header (%02X)\n", header);
+ return -1;
+ } else {
+ int length = header >> 5 & 3;
+
+ s->next_slice_index = get_bits_count(&h->gb) +
+ 8 * show_bits(&h->gb, 8 * length) +
+ 8 * length;
+
+ if (s->next_slice_index > h->gb.size_in_bits) {
+ av_log(avctx, AV_LOG_ERROR, "slice after bitstream end\n");
+ return -1;
+ }
+
+ h->gb.size_in_bits = s->next_slice_index - 8 * (length - 1);
+ skip_bits(&h->gb, 8);
+
+ if (s->watermark_key) {
+ uint32_t header = AV_RL32(&h->gb.buffer[(get_bits_count(&h->gb) >> 3) + 1]);
+ AV_WL32(&h->gb.buffer[(get_bits_count(&h->gb) >> 3) + 1],
+ header ^ s->watermark_key);
+ }
+ if (length > 0) {
+ memcpy((uint8_t *) &h->gb.buffer[get_bits_count(&h->gb) >> 3],
+ &h->gb.buffer[h->gb.size_in_bits >> 3], length - 1);
+ }
+ skip_bits_long(&h->gb, 0);
+ }
+
+ if ((slice_id = svq3_get_ue_golomb(&h->gb)) >= 3) {
+ av_log(h->avctx, AV_LOG_ERROR, "illegal slice type %d \n", slice_id);
+ return -1;
+ }
+
+ h->slice_type = golomb_to_pict_type[slice_id];
+
+ if ((header & 0x9F) == 2) {
+ i = (h->mb_num < 64) ? 6 : (1 + av_log2(h->mb_num - 1));
+ h->mb_skip_run = get_bits(&h->gb, i) -
+ (h->mb_y * h->mb_width + h->mb_x);
+ } else {
+ skip_bits1(&h->gb);
+ h->mb_skip_run = 0;
+ }
+
+ h->slice_num = get_bits(&h->gb, 8);
+ h->qscale = get_bits(&h->gb, 5);
+ s->adaptive_quant = get_bits1(&h->gb);
+
+ /* unknown fields */
+ skip_bits1(&h->gb);
+
+ if (s->unknown_flag)
+ skip_bits1(&h->gb);
+
+ skip_bits1(&h->gb);
+ skip_bits(&h->gb, 2);
+
+ while (get_bits1(&h->gb))
+ skip_bits(&h->gb, 8);
+
+ /* reset intra predictors and invalidate motion vector references */
+ if (h->mb_x > 0) {
+ memset(h->intra4x4_pred_mode + h->mb2br_xy[mb_xy - 1] + 3,
+ -1, 4 * sizeof(int8_t));
+ memset(h->intra4x4_pred_mode + h->mb2br_xy[mb_xy - h->mb_x],
+ -1, 8 * sizeof(int8_t) * h->mb_x);
+ }
+ if (h->mb_y > 0) {
+ memset(h->intra4x4_pred_mode + h->mb2br_xy[mb_xy - h->mb_stride],
+ -1, 8 * sizeof(int8_t) * (h->mb_width - h->mb_x));
+
+ if (h->mb_x > 0)
+ h->intra4x4_pred_mode[h->mb2br_xy[mb_xy - h->mb_stride - 1] + 3] = -1;
+ }
+
+ return 0;
+}
+
+static av_cold int svq3_decode_init(AVCodecContext *avctx)
+{
+ SVQ3Context *s = avctx->priv_data;
+ H264Context *h = &s->h;
+ int m;
+ unsigned char *extradata;
+ unsigned char *extradata_end;
+ unsigned int size;
+ int marker_found = 0;
+
+ s->cur_pic = av_mallocz(sizeof(*s->cur_pic));
+ s->last_pic = av_mallocz(sizeof(*s->last_pic));
+ s->next_pic = av_mallocz(sizeof(*s->next_pic));
+ if (!s->next_pic || !s->last_pic || !s->cur_pic) {
+ av_freep(&s->cur_pic);
+ av_freep(&s->last_pic);
+ av_freep(&s->next_pic);
+ return AVERROR(ENOMEM);
+ }
+
+ if (ff_h264_decode_init(avctx) < 0)
+ return -1;
+
+ ff_hpeldsp_init(&s->hdsp, avctx->flags);
+ h->flags = avctx->flags;
+ h->is_complex = 1;
+ h->sps.chroma_format_idc = 1;
+ h->picture_structure = PICT_FRAME;
+ avctx->pix_fmt = avctx->codec->pix_fmts[0];
+
+ h->chroma_qp[0] = h->chroma_qp[1] = 4;
+ h->chroma_x_shift = h->chroma_y_shift = 1;
+
+ s->halfpel_flag = 1;
+ s->thirdpel_flag = 1;
+ s->unknown_flag = 0;
+
+ /* prowl for the "SEQH" marker in the extradata */
+ extradata = (unsigned char *)avctx->extradata;
+ extradata_end = avctx->extradata + avctx->extradata_size;
+ if (extradata) {
+ for (m = 0; m + 8 < avctx->extradata_size; m++) {
+ if (!memcmp(extradata, "SEQH", 4)) {
+ marker_found = 1;
+ break;
+ }
+ extradata++;
+ }
+ }
+
+ /* if a match was found, parse the extra data */
+ if (marker_found) {
+ GetBitContext gb;
+ int frame_size_code;
+
+ size = AV_RB32(&extradata[4]);
+ if (size > extradata_end - extradata - 8)
+ return AVERROR_INVALIDDATA;
+ init_get_bits(&gb, extradata + 8, size * 8);
+
+ /* 'frame size code' and optional 'width, height' */
+ frame_size_code = get_bits(&gb, 3);
+ switch (frame_size_code) {
+ case 0:
+ avctx->width = 160;
+ avctx->height = 120;
+ break;
+ case 1:
+ avctx->width = 128;
+ avctx->height = 96;
+ break;
+ case 2:
+ avctx->width = 176;
+ avctx->height = 144;
+ break;
+ case 3:
+ avctx->width = 352;
+ avctx->height = 288;
+ break;
+ case 4:
+ avctx->width = 704;
+ avctx->height = 576;
+ break;
+ case 5:
+ avctx->width = 240;
+ avctx->height = 180;
+ break;
+ case 6:
+ avctx->width = 320;
+ avctx->height = 240;
+ break;
+ case 7:
+ avctx->width = get_bits(&gb, 12);
+ avctx->height = get_bits(&gb, 12);
+ break;
+ }
+
+ s->halfpel_flag = get_bits1(&gb);
+ s->thirdpel_flag = get_bits1(&gb);
+
+ /* unknown fields */
+ skip_bits1(&gb);
+ skip_bits1(&gb);
+ skip_bits1(&gb);
+ skip_bits1(&gb);
+
+ h->low_delay = get_bits1(&gb);
+
+ /* unknown field */
+ skip_bits1(&gb);
+
+ while (get_bits1(&gb))
+ skip_bits(&gb, 8);
+
+ s->unknown_flag = get_bits1(&gb);
+ avctx->has_b_frames = !h->low_delay;
+ if (s->unknown_flag) {
+#if CONFIG_ZLIB
+ unsigned watermark_width = svq3_get_ue_golomb(&gb);
+ unsigned watermark_height = svq3_get_ue_golomb(&gb);
+ int u1 = svq3_get_ue_golomb(&gb);
+ int u2 = get_bits(&gb, 8);
+ int u3 = get_bits(&gb, 2);
+ int u4 = svq3_get_ue_golomb(&gb);
+ unsigned long buf_len = watermark_width *
+ watermark_height * 4;
+ int offset = get_bits_count(&gb) + 7 >> 3;
+ uint8_t *buf;
+
+ if (watermark_height <= 0 || (uint64_t)watermark_width*4 > UINT_MAX/watermark_height)
+ return -1;
+
+ buf = av_malloc(buf_len);
+ av_log(avctx, AV_LOG_DEBUG, "watermark size: %dx%d\n",
+ watermark_width, watermark_height);
+ av_log(avctx, AV_LOG_DEBUG,
+ "u1: %x u2: %x u3: %x compressed data size: %d offset: %d\n",
+ u1, u2, u3, u4, offset);
+ if (uncompress(buf, &buf_len, extradata + 8 + offset,
+ size - offset) != Z_OK) {
+ av_log(avctx, AV_LOG_ERROR,
+ "could not uncompress watermark logo\n");
+ av_free(buf);
+ return -1;
+ }
+ s->watermark_key = ff_svq1_packet_checksum(buf, buf_len, 0);
+ s->watermark_key = s->watermark_key << 16 | s->watermark_key;
+ av_log(avctx, AV_LOG_DEBUG,
+ "watermark key %#x\n", s->watermark_key);
+ av_free(buf);
+#else
+ av_log(avctx, AV_LOG_ERROR,
+ "this svq3 file contains watermark which need zlib support compiled in\n");
+ return -1;
+#endif
+ }
+ }
+
+ h->width = avctx->width;
+ h->height = avctx->height;
+ h->mb_width = (h->width + 15) / 16;
+ h->mb_height = (h->height + 15) / 16;
+ h->mb_stride = h->mb_width + 1;
+ h->mb_num = h->mb_width * h->mb_height;
+ h->b_stride = 4 * h->mb_width;
+ s->h_edge_pos = h->mb_width * 16;
+ s->v_edge_pos = h->mb_height * 16;
+
+ if (ff_h264_alloc_tables(h) < 0) {
+ av_log(avctx, AV_LOG_ERROR, "svq3 memory allocation failed\n");
+ return AVERROR(ENOMEM);
+ }
+
+ return 0;
+}
+
+static void free_picture(AVCodecContext *avctx, Picture *pic)
+{
+ int i;
+ for (i = 0; i < 2; i++) {
+ av_buffer_unref(&pic->motion_val_buf[i]);
+ av_buffer_unref(&pic->ref_index_buf[i]);
+ }
+ av_buffer_unref(&pic->mb_type_buf);
+
+ av_frame_unref(&pic->f);
+}
+
+static int get_buffer(AVCodecContext *avctx, Picture *pic)
+{
+ SVQ3Context *s = avctx->priv_data;
+ H264Context *h = &s->h;
+ const int big_mb_num = h->mb_stride * (h->mb_height + 1) + 1;
+ const int mb_array_size = h->mb_stride * h->mb_height;
+ const int b4_stride = h->mb_width * 4 + 1;
+ const int b4_array_size = b4_stride * h->mb_height * 4;
+ int ret;
+
+ if (!pic->motion_val_buf[0]) {
+ int i;
+
+ pic->mb_type_buf = av_buffer_allocz((big_mb_num + h->mb_stride) * sizeof(uint32_t));
+ if (!pic->mb_type_buf)
+ return AVERROR(ENOMEM);
+ pic->mb_type = (uint32_t*)pic->mb_type_buf->data + 2 * h->mb_stride + 1;
+
+ for (i = 0; i < 2; i++) {
+ pic->motion_val_buf[i] = av_buffer_allocz(2 * (b4_array_size + 4) * sizeof(int16_t));
+ pic->ref_index_buf[i] = av_buffer_allocz(4 * mb_array_size);
+ if (!pic->motion_val_buf[i] || !pic->ref_index_buf[i]) {
+ ret = AVERROR(ENOMEM);
+ goto fail;
+ }
+
+ pic->motion_val[i] = (int16_t (*)[2])pic->motion_val_buf[i]->data + 4;
+ pic->ref_index[i] = pic->ref_index_buf[i]->data;
+ }
+ }
+ pic->reference = !(h->pict_type == AV_PICTURE_TYPE_B);
+
+ ret = ff_get_buffer(avctx, &pic->f,
+ pic->reference ? AV_GET_BUFFER_FLAG_REF : 0);
+ if (ret < 0)
+ goto fail;
+
+ if (!h->edge_emu_buffer) {
+ h->edge_emu_buffer = av_mallocz(pic->f.linesize[0] * 17);
+ if (!h->edge_emu_buffer)
+ return AVERROR(ENOMEM);
+ }
+
+ h->linesize = pic->f.linesize[0];
+ h->uvlinesize = pic->f.linesize[1];
+
+ return 0;
+fail:
+ free_picture(avctx, pic);
+ return ret;
+}
+
+static int svq3_decode_frame(AVCodecContext *avctx, void *data,
+ int *got_frame, AVPacket *avpkt)
+{
+ SVQ3Context *s = avctx->priv_data;
+ H264Context *h = &s->h;
+ int buf_size = avpkt->size;
+ int left;
+ uint8_t *buf;
+ int ret, m, i;
+
+ /* special case for last picture */
+ if (buf_size == 0) {
+ if (s->next_pic->f.data[0] && !h->low_delay && !s->last_frame_output) {
+ ret = av_frame_ref(data, &s->next_pic->f);
+ if (ret < 0)
+ return ret;
+ s->last_frame_output = 1;
+ *got_frame = 1;
+ }
+ return 0;
+ }
+
+ h->mb_x = h->mb_y = h->mb_xy = 0;
+
+ if (s->watermark_key) {
+ av_fast_malloc(&s->buf, &s->buf_size,
+ buf_size+FF_INPUT_BUFFER_PADDING_SIZE);
+ if (!s->buf)
+ return AVERROR(ENOMEM);
+ memcpy(s->buf, avpkt->data, buf_size);
+ buf = s->buf;
+ } else {
+ buf = avpkt->data;
+ }
+
+ init_get_bits(&h->gb, buf, 8 * buf_size);
+
+ if (svq3_decode_slice_header(avctx))
+ return -1;
+
+ h->pict_type = h->slice_type;
+
+ if (h->pict_type != AV_PICTURE_TYPE_B)
+ FFSWAP(Picture*, s->next_pic, s->last_pic);
+
+ av_frame_unref(&s->cur_pic->f);
+
+ /* for skipping the frame */
+ s->cur_pic->f.pict_type = h->pict_type;
+ s->cur_pic->f.key_frame = (h->pict_type == AV_PICTURE_TYPE_I);
+
+ ret = get_buffer(avctx, s->cur_pic);
+ if (ret < 0)
+ return ret;
+
+ h->cur_pic_ptr = s->cur_pic;
+ av_frame_unref(&h->cur_pic.f);
+ h->cur_pic = *s->cur_pic;
+ ret = av_frame_ref(&h->cur_pic.f, &s->cur_pic->f);
+ if (ret < 0)
+ return ret;
+
+ for (i = 0; i < 16; i++) {
+ h->block_offset[i] = (4 * ((scan8[i] - scan8[0]) & 7)) + 4 * h->linesize * ((scan8[i] - scan8[0]) >> 3);
+ h->block_offset[48 + i] = (4 * ((scan8[i] - scan8[0]) & 7)) + 8 * h->linesize * ((scan8[i] - scan8[0]) >> 3);
+ }
+ for (i = 0; i < 16; i++) {
+ h->block_offset[16 + i] =
+ h->block_offset[32 + i] = (4 * ((scan8[i] - scan8[0]) & 7)) + 4 * h->uvlinesize * ((scan8[i] - scan8[0]) >> 3);
+ h->block_offset[48 + 16 + i] =
+ h->block_offset[48 + 32 + i] = (4 * ((scan8[i] - scan8[0]) & 7)) + 8 * h->uvlinesize * ((scan8[i] - scan8[0]) >> 3);
+ }
+
+ if (h->pict_type != AV_PICTURE_TYPE_I) {
+ if (!s->last_pic->f.data[0]) {
+ av_log(avctx, AV_LOG_ERROR, "Missing reference frame.\n");
+ ret = get_buffer(avctx, s->last_pic);
+ if (ret < 0)
+ return ret;
+ memset(s->last_pic->f.data[0], 0, avctx->height * s->last_pic->f.linesize[0]);
+ memset(s->last_pic->f.data[1], 0x80, (avctx->height / 2) *
+ s->last_pic->f.linesize[1]);
+ memset(s->last_pic->f.data[2], 0x80, (avctx->height / 2) *
+ s->last_pic->f.linesize[2]);
+ }
+
+ if (h->pict_type == AV_PICTURE_TYPE_B && !s->next_pic->f.data[0]) {
+ av_log(avctx, AV_LOG_ERROR, "Missing reference frame.\n");
+ ret = get_buffer(avctx, s->next_pic);
+ if (ret < 0)
+ return ret;
+ memset(s->next_pic->f.data[0], 0, avctx->height * s->next_pic->f.linesize[0]);
+ memset(s->next_pic->f.data[1], 0x80, (avctx->height / 2) *
+ s->next_pic->f.linesize[1]);
+ memset(s->next_pic->f.data[2], 0x80, (avctx->height / 2) *
+ s->next_pic->f.linesize[2]);
+ }
+ }
+
+ if (avctx->debug & FF_DEBUG_PICT_INFO)
+ av_log(h->avctx, AV_LOG_DEBUG,
+ "%c hpel:%d, tpel:%d aqp:%d qp:%d, slice_num:%02X\n",
+ av_get_picture_type_char(h->pict_type),
+ s->halfpel_flag, s->thirdpel_flag,
+ s->adaptive_quant, h->qscale, h->slice_num);
+
+ if (avctx->skip_frame >= AVDISCARD_NONREF && h->pict_type == AV_PICTURE_TYPE_B ||
+ avctx->skip_frame >= AVDISCARD_NONKEY && h->pict_type != AV_PICTURE_TYPE_I ||
+ avctx->skip_frame >= AVDISCARD_ALL)
+ return 0;
+
+ if (s->next_p_frame_damaged) {
+ if (h->pict_type == AV_PICTURE_TYPE_B)
+ return 0;
+ else
+ s->next_p_frame_damaged = 0;
+ }
+
+ if (h->pict_type == AV_PICTURE_TYPE_B) {
+ h->frame_num_offset = h->slice_num - h->prev_frame_num;
+
+ if (h->frame_num_offset < 0)
+ h->frame_num_offset += 256;
+ if (h->frame_num_offset == 0 ||
+ h->frame_num_offset >= h->prev_frame_num_offset) {
+ av_log(h->avctx, AV_LOG_ERROR, "error in B-frame picture id\n");
+ return -1;
+ }
+ } else {
+ h->prev_frame_num = h->frame_num;
+ h->frame_num = h->slice_num;
+ h->prev_frame_num_offset = h->frame_num - h->prev_frame_num;
+
+ if (h->prev_frame_num_offset < 0)
+ h->prev_frame_num_offset += 256;
+ }
+
+ for (m = 0; m < 2; m++) {
+ int i;
+ for (i = 0; i < 4; i++) {
+ int j;
+ for (j = -1; j < 4; j++)
+ h->ref_cache[m][scan8[0] + 8 * i + j] = 1;
+ if (i < 3)
+ h->ref_cache[m][scan8[0] + 8 * i + j] = PART_NOT_AVAILABLE;
+ }
+ }
+
+ for (h->mb_y = 0; h->mb_y < h->mb_height; h->mb_y++) {
+ for (h->mb_x = 0; h->mb_x < h->mb_width; h->mb_x++) {
+ unsigned mb_type;
+ h->mb_xy = h->mb_x + h->mb_y * h->mb_stride;
+
+ if ((get_bits_count(&h->gb) + 7) >= h->gb.size_in_bits &&
+ ((get_bits_count(&h->gb) & 7) == 0 ||
+ show_bits(&h->gb, -get_bits_count(&h->gb) & 7) == 0)) {
+ skip_bits(&h->gb, s->next_slice_index - get_bits_count(&h->gb));
+ h->gb.size_in_bits = 8 * buf_size;
+
+ if (svq3_decode_slice_header(avctx))
+ return -1;
+
+ /* TODO: support s->mb_skip_run */
+ }
+
+ mb_type = svq3_get_ue_golomb(&h->gb);
+
+ if (h->pict_type == AV_PICTURE_TYPE_I)
+ mb_type += 8;
+ else if (h->pict_type == AV_PICTURE_TYPE_B && mb_type >= 4)
+ mb_type += 4;
+ if (mb_type > 33 || svq3_decode_mb(s, mb_type)) {
+ av_log(h->avctx, AV_LOG_ERROR,
+ "error while decoding MB %d %d\n", h->mb_x, h->mb_y);
+ return -1;
+ }
+
+ if (mb_type != 0 || h->cbp)
+ ff_h264_hl_decode_mb(h);
+
+ if (h->pict_type != AV_PICTURE_TYPE_B && !h->low_delay)
+ h->cur_pic.mb_type[h->mb_x + h->mb_y * h->mb_stride] =
+ (h->pict_type == AV_PICTURE_TYPE_P && mb_type < 8) ? (mb_type - 1) : -1;
+ }
+
+ ff_draw_horiz_band(avctx, NULL, s->cur_pic, s->last_pic->f.data[0] ? s->last_pic : NULL,
+ 16 * h->mb_y, 16, h->picture_structure, 0, 0,
+ h->low_delay, h->mb_height * 16, h->mb_width * 16);
+ }
+
+ left = buf_size*8 - get_bits_count(&h->gb);
+
+ if (h->mb_y != h->mb_height || h->mb_x != h->mb_width) {
+ av_log(avctx, AV_LOG_INFO, "frame num %d incomplete pic x %d y %d left %d\n", avctx->frame_number, h->mb_y, h->mb_x, left);
+ //av_hex_dump(stderr, buf+buf_size-8, 8);
+ }
+
+ if (left < 0) {
+ av_log(avctx, AV_LOG_ERROR, "frame num %d left %d\n", avctx->frame_number, left);
+ return -1;
+ }
+
+ if (h->pict_type == AV_PICTURE_TYPE_B || h->low_delay)
+ ret = av_frame_ref(data, &s->cur_pic->f);
+ else if (s->last_pic->f.data[0])
+ ret = av_frame_ref(data, &s->last_pic->f);
+ if (ret < 0)
+ return ret;
+
+ /* Do not output the last pic after seeking. */
+ if (s->last_pic->f.data[0] || h->low_delay)
+ *got_frame = 1;
+
+ if (h->pict_type != AV_PICTURE_TYPE_B) {
+ FFSWAP(Picture*, s->cur_pic, s->next_pic);
+ } else {
+ av_frame_unref(&s->cur_pic->f);
+ }
+
+ return buf_size;
+}
+
+static int svq3_decode_end(AVCodecContext *avctx)
+{
+ SVQ3Context *s = avctx->priv_data;
+ H264Context *h = &s->h;
+
+ free_picture(avctx, s->cur_pic);
+ free_picture(avctx, s->next_pic);
+ free_picture(avctx, s->last_pic);
+ av_freep(&s->cur_pic);
+ av_freep(&s->next_pic);
+ av_freep(&s->last_pic);
+
+ av_frame_unref(&h->cur_pic.f);
+
+ ff_h264_free_context(h);
+
+ av_freep(&s->buf);
+ s->buf_size = 0;
+ av_freep(&h->edge_emu_buffer);
+
+ return 0;
+}
+
+AVCodec ff_svq3_decoder = {
+ .name = "svq3",
+ .type = AVMEDIA_TYPE_VIDEO,
+ .id = AV_CODEC_ID_SVQ3,
+ .priv_data_size = sizeof(SVQ3Context),
+ .init = svq3_decode_init,
+ .close = svq3_decode_end,
+ .decode = svq3_decode_frame,
+ .capabilities = CODEC_CAP_DRAW_HORIZ_BAND |
+ CODEC_CAP_DR1 |
+ CODEC_CAP_DELAY,
+ .long_name = NULL_IF_CONFIG_SMALL("Sorenson Vector Quantizer 3 / Sorenson Video 3 / SVQ3"),
+ .pix_fmts = (const enum AVPixelFormat[]) { AV_PIX_FMT_YUVJ420P,
+ AV_PIX_FMT_NONE},
+};
generated by cgit v1.2.3 (git 2.39.1) at 2025-12-06 20:40:48 +0000