2 * Copyright (c) 2003 The FFmpeg Project
4 * This file is part of FFmpeg.
6 * FFmpeg is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU Lesser General Public
8 * License as published by the Free Software Foundation; either
9 * version 2.1 of the License, or (at your option) any later version.
11 * FFmpeg is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14 * Lesser General Public License for more details.
16 * You should have received a copy of the GNU Lesser General Public
17 * License along with FFmpeg; if not, write to the Free Software
18 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
22 * How to use this decoder:
23 * SVQ3 data is transported within Apple Quicktime files. Quicktime files
24 * have stsd atoms to describe media trak properties. A stsd atom for a
25 * video trak contains 1 or more ImageDescription atoms. These atoms begin
26 * with the 4-byte length of the atom followed by the codec fourcc. Some
27 * decoders need information in this atom to operate correctly. Such
28 * is the case with SVQ3. In order to get the best use out of this decoder,
29 * the calling app must make the SVQ3 ImageDescription atom available
30 * via the AVCodecContext's extradata[_size] field:
32 * AVCodecContext.extradata = pointer to ImageDescription, first characters
33 * are expected to be 'S', 'V', 'Q', and '3', NOT the 4-byte atom length
34 * AVCodecContext.extradata_size = size of ImageDescription atom memory
35 * buffer (which will be the same as the ImageDescription atom size field
36 * from the QT file, minus 4 bytes since the length is missing)
38 * You will know you have these parameters passed correctly when the decoder
39 * correctly decodes this file:
40 * http://samples.mplayerhq.hu/V-codecs/SVQ3/Vertical400kbit.sorenson3.mov
45 #include "mpegvideo.h"
48 #include "h264data.h" //FIXME FIXME FIXME
50 #include "h264_mvpred.h"
52 #include "rectangle.h"
53 #include "vdpau_internal.h"
72 uint32_t watermark_key;
77 #define FULLPEL_MODE 1
78 #define HALFPEL_MODE 2
79 #define THIRDPEL_MODE 3
80 #define PREDICT_MODE 4
82 /* dual scan (from some older h264 draft)
91 static const uint8_t svq3_scan[16] = {
92 0+0*4, 1+0*4, 2+0*4, 2+1*4,
93 2+2*4, 3+0*4, 3+1*4, 3+2*4,
94 0+1*4, 0+2*4, 1+1*4, 1+2*4,
95 0+3*4, 1+3*4, 2+3*4, 3+3*4,
98 static const uint8_t svq3_pred_0[25][2] = {
101 { 0, 2 }, { 1, 1 }, { 2, 0 },
102 { 3, 0 }, { 2, 1 }, { 1, 2 }, { 0, 3 },
103 { 0, 4 }, { 1, 3 }, { 2, 2 }, { 3, 1 }, { 4, 0 },
104 { 4, 1 }, { 3, 2 }, { 2, 3 }, { 1, 4 },
105 { 2, 4 }, { 3, 3 }, { 4, 2 },
110 static const int8_t svq3_pred_1[6][6][5] = {
111 { { 2,-1,-1,-1,-1 }, { 2, 1,-1,-1,-1 }, { 1, 2,-1,-1,-1 },
112 { 2, 1,-1,-1,-1 }, { 1, 2,-1,-1,-1 }, { 1, 2,-1,-1,-1 } },
113 { { 0, 2,-1,-1,-1 }, { 0, 2, 1, 4, 3 }, { 0, 1, 2, 4, 3 },
114 { 0, 2, 1, 4, 3 }, { 2, 0, 1, 3, 4 }, { 0, 4, 2, 1, 3 } },
115 { { 2, 0,-1,-1,-1 }, { 2, 1, 0, 4, 3 }, { 1, 2, 4, 0, 3 },
116 { 2, 1, 0, 4, 3 }, { 2, 1, 4, 3, 0 }, { 1, 2, 4, 0, 3 } },
117 { { 2, 0,-1,-1,-1 }, { 2, 0, 1, 4, 3 }, { 1, 2, 0, 4, 3 },
118 { 2, 1, 0, 4, 3 }, { 2, 1, 3, 4, 0 }, { 2, 4, 1, 0, 3 } },
119 { { 0, 2,-1,-1,-1 }, { 0, 2, 1, 3, 4 }, { 1, 2, 3, 0, 4 },
120 { 2, 0, 1, 3, 4 }, { 2, 1, 3, 0, 4 }, { 2, 0, 4, 3, 1 } },
121 { { 0, 2,-1,-1,-1 }, { 0, 2, 4, 1, 3 }, { 1, 4, 2, 0, 3 },
122 { 4, 2, 0, 1, 3 }, { 2, 0, 1, 4, 3 }, { 4, 2, 1, 0, 3 } },
125 static const struct { uint8_t run; uint8_t level; } svq3_dct_tables[2][16] = {
126 { { 0, 0 }, { 0, 1 }, { 1, 1 }, { 2, 1 }, { 0, 2 }, { 3, 1 }, { 4, 1 }, { 5, 1 },
127 { 0, 3 }, { 1, 2 }, { 2, 2 }, { 6, 1 }, { 7, 1 }, { 8, 1 }, { 9, 1 }, { 0, 4 } },
128 { { 0, 0 }, { 0, 1 }, { 1, 1 }, { 0, 2 }, { 2, 1 }, { 0, 3 }, { 0, 4 }, { 0, 5 },
129 { 3, 1 }, { 4, 1 }, { 1, 2 }, { 1, 3 }, { 0, 6 }, { 0, 7 }, { 0, 8 }, { 0, 9 } }
132 static const uint32_t svq3_dequant_coeff[32] = {
133 3881, 4351, 4890, 5481, 6154, 6914, 7761, 8718,
134 9781, 10987, 12339, 13828, 15523, 17435, 19561, 21873,
135 24552, 27656, 30847, 34870, 38807, 43747, 49103, 54683,
136 61694, 68745, 77615, 89113,100253,109366,126635,141533
139 void ff_svq3_luma_dc_dequant_idct_c(DCTELEM *output, DCTELEM *input, int qp){
140 const int qmul = svq3_dequant_coeff[qp];
144 static const uint8_t x_offset[4]={0, 1*stride, 4*stride, 5*stride};
147 const int z0 = 13*(input[4*i+0] + input[4*i+2]);
148 const int z1 = 13*(input[4*i+0] - input[4*i+2]);
149 const int z2 = 7* input[4*i+1] - 17*input[4*i+3];
150 const int z3 = 17* input[4*i+1] + 7*input[4*i+3];
159 const int offset= x_offset[i];
160 const int z0= 13*(temp[4*0+i] + temp[4*2+i]);
161 const int z1= 13*(temp[4*0+i] - temp[4*2+i]);
162 const int z2= 7* temp[4*1+i] - 17*temp[4*3+i];
163 const int z3= 17* temp[4*1+i] + 7*temp[4*3+i];
165 output[stride* 0+offset] = ((z0 + z3)*qmul + 0x80000) >> 20;
166 output[stride* 2+offset] = ((z1 + z2)*qmul + 0x80000) >> 20;
167 output[stride* 8+offset] = ((z1 - z2)*qmul + 0x80000) >> 20;
168 output[stride*10+offset] = ((z0 - z3)*qmul + 0x80000) >> 20;
173 void ff_svq3_add_idct_c(uint8_t *dst, DCTELEM *block, int stride, int qp,
176 const int qmul = svq3_dequant_coeff[qp];
178 uint8_t *cm = ff_cropTbl + MAX_NEG_CROP;
181 dc = 13*13*((dc == 1) ? 1538*block[0] : ((qmul*(block[0] >> 3)) / 2));
185 for (i = 0; i < 4; i++) {
186 const int z0 = 13*(block[0 + 4*i] + block[2 + 4*i]);
187 const int z1 = 13*(block[0 + 4*i] - block[2 + 4*i]);
188 const int z2 = 7* block[1 + 4*i] - 17*block[3 + 4*i];
189 const int z3 = 17* block[1 + 4*i] + 7*block[3 + 4*i];
191 block[0 + 4*i] = z0 + z3;
192 block[1 + 4*i] = z1 + z2;
193 block[2 + 4*i] = z1 - z2;
194 block[3 + 4*i] = z0 - z3;
197 for (i = 0; i < 4; i++) {
198 const int z0 = 13*(block[i + 4*0] + block[i + 4*2]);
199 const int z1 = 13*(block[i + 4*0] - block[i + 4*2]);
200 const int z2 = 7* block[i + 4*1] - 17*block[i + 4*3];
201 const int z3 = 17* block[i + 4*1] + 7*block[i + 4*3];
202 const int rr = (dc + 0x80000);
204 dst[i + stride*0] = cm[ dst[i + stride*0] + (((z0 + z3)*qmul + rr) >> 20) ];
205 dst[i + stride*1] = cm[ dst[i + stride*1] + (((z1 + z2)*qmul + rr) >> 20) ];
206 dst[i + stride*2] = cm[ dst[i + stride*2] + (((z1 - z2)*qmul + rr) >> 20) ];
207 dst[i + stride*3] = cm[ dst[i + stride*3] + (((z0 - z3)*qmul + rr) >> 20) ];
211 static inline int svq3_decode_block(GetBitContext *gb, DCTELEM *block,
212 int index, const int type)
214 static const uint8_t *const scan_patterns[4] =
215 { luma_dc_zigzag_scan, zigzag_scan, svq3_scan, chroma_dc_scan };
217 int run, level, sign, vlc, limit;
218 const int intra = (3 * type) >> 2;
219 const uint8_t *const scan = scan_patterns[type];
221 for (limit = (16 >> intra); index < 16; index = limit, limit += 8) {
222 for (; (vlc = svq3_get_ue_golomb(gb)) != 0; index++) {
227 sign = (vlc & 0x1) - 1;
228 vlc = (vlc + 1) >> 1;
234 } else if (vlc < 4) {
239 level = ((vlc + 9) >> 2) - run;
243 run = svq3_dct_tables[intra][vlc].run;
244 level = svq3_dct_tables[intra][vlc].level;
247 level = (vlc >> 3) + ((run == 0) ? 8 : ((run < 2) ? 2 : ((run < 5) ? 0 : -1)));
250 level = (vlc >> 4) + ((run == 0) ? 4 : ((run < 3) ? 2 : ((run < 10) ? 1 : 0)));
254 if ((index += run) >= limit)
257 block[scan[index]] = (level ^ sign) - sign;
268 static inline void svq3_mc_dir_part(MpegEncContext *s,
269 int x, int y, int width, int height,
270 int mx, int my, int dxy,
271 int thirdpel, int dir, int avg)
273 const Picture *pic = (dir == 0) ? &s->last_picture : &s->next_picture;
276 int blocksize = 2 - (width>>3); //16->0, 8->1, 4->2
281 if (mx < 0 || mx >= (s->h_edge_pos - width - 1) ||
282 my < 0 || my >= (s->v_edge_pos - height - 1)) {
284 if ((s->flags & CODEC_FLAG_EMU_EDGE)) {
288 mx = av_clip (mx, -16, (s->h_edge_pos - width + 15));
289 my = av_clip (my, -16, (s->v_edge_pos - height + 15));
292 /* form component predictions */
293 dest = s->current_picture.f.data[0] + x + y*s->linesize;
294 src = pic->f.data[0] + mx + my*s->linesize;
297 s->dsp.emulated_edge_mc(s->edge_emu_buffer, src, s->linesize, (width + 1), (height + 1),
298 mx, my, s->h_edge_pos, s->v_edge_pos);
299 src = s->edge_emu_buffer;
302 (avg ? s->dsp.avg_tpel_pixels_tab : s->dsp.put_tpel_pixels_tab)[dxy](dest, src, s->linesize, width, height);
304 (avg ? s->dsp.avg_pixels_tab : s->dsp.put_pixels_tab)[blocksize][dxy](dest, src, s->linesize, height);
306 if (!(s->flags & CODEC_FLAG_GRAY)) {
307 mx = (mx + (mx < (int) x)) >> 1;
308 my = (my + (my < (int) y)) >> 1;
309 width = (width >> 1);
310 height = (height >> 1);
313 for (i = 1; i < 3; i++) {
314 dest = s->current_picture.f.data[i] + (x >> 1) + (y >> 1) * s->uvlinesize;
315 src = pic->f.data[i] + mx + my * s->uvlinesize;
318 s->dsp.emulated_edge_mc(s->edge_emu_buffer, src, s->uvlinesize, (width + 1), (height + 1),
319 mx, my, (s->h_edge_pos >> 1), (s->v_edge_pos >> 1));
320 src = s->edge_emu_buffer;
323 (avg ? s->dsp.avg_tpel_pixels_tab : s->dsp.put_tpel_pixels_tab)[dxy](dest, src, s->uvlinesize, width, height);
325 (avg ? s->dsp.avg_pixels_tab : s->dsp.put_pixels_tab)[blocksize][dxy](dest, src, s->uvlinesize, height);
330 static inline int svq3_mc_dir(H264Context *h, int size, int mode, int dir,
333 int i, j, k, mx, my, dx, dy, x, y;
334 MpegEncContext *const s = (MpegEncContext *) h;
335 const int part_width = ((size & 5) == 4) ? 4 : 16 >> (size & 1);
336 const int part_height = 16 >> ((unsigned) (size + 1) / 3);
337 const int extra_width = (mode == PREDICT_MODE) ? -16*6 : 0;
338 const int h_edge_pos = 6*(s->h_edge_pos - part_width ) - extra_width;
339 const int v_edge_pos = 6*(s->v_edge_pos - part_height) - extra_width;
341 for (i = 0; i < 16; i += part_height) {
342 for (j = 0; j < 16; j += part_width) {
343 const int b_xy = (4*s->mb_x + (j >> 2)) + (4*s->mb_y + (i >> 2))*h->b_stride;
347 k = ((j >> 2) & 1) + ((i >> 1) & 2) + ((j >> 1) & 4) + (i & 8);
349 if (mode != PREDICT_MODE) {
350 pred_motion(h, k, (part_width >> 2), dir, 1, &mx, &my);
352 mx = s->next_picture.f.motion_val[0][b_xy][0] << 1;
353 my = s->next_picture.f.motion_val[0][b_xy][1] << 1;
356 mx = ((mx * h->frame_num_offset) / h->prev_frame_num_offset + 1) >> 1;
357 my = ((my * h->frame_num_offset) / h->prev_frame_num_offset + 1) >> 1;
359 mx = ((mx * (h->frame_num_offset - h->prev_frame_num_offset)) / h->prev_frame_num_offset + 1) >> 1;
360 my = ((my * (h->frame_num_offset - h->prev_frame_num_offset)) / h->prev_frame_num_offset + 1) >> 1;
364 /* clip motion vector prediction to frame border */
365 mx = av_clip(mx, extra_width - 6*x, h_edge_pos - 6*x);
366 my = av_clip(my, extra_width - 6*y, v_edge_pos - 6*y);
368 /* get (optional) motion vector differential */
369 if (mode == PREDICT_MODE) {
372 dy = svq3_get_se_golomb(&s->gb);
373 dx = svq3_get_se_golomb(&s->gb);
375 if (dx == INVALID_VLC || dy == INVALID_VLC) {
376 av_log(h->s.avctx, AV_LOG_ERROR, "invalid MV vlc\n");
381 /* compute motion vector */
382 if (mode == THIRDPEL_MODE) {
384 mx = ((mx + 1)>>1) + dx;
385 my = ((my + 1)>>1) + dy;
386 fx = ((unsigned)(mx + 0x3000))/3 - 0x1000;
387 fy = ((unsigned)(my + 0x3000))/3 - 0x1000;
388 dxy = (mx - 3*fx) + 4*(my - 3*fy);
390 svq3_mc_dir_part(s, x, y, part_width, part_height, fx, fy, dxy, 1, dir, avg);
393 } else if (mode == HALFPEL_MODE || mode == PREDICT_MODE) {
394 mx = ((unsigned)(mx + 1 + 0x3000))/3 + dx - 0x1000;
395 my = ((unsigned)(my + 1 + 0x3000))/3 + dy - 0x1000;
396 dxy = (mx&1) + 2*(my&1);
398 svq3_mc_dir_part(s, x, y, part_width, part_height, mx>>1, my>>1, dxy, 0, dir, avg);
402 mx = ((unsigned)(mx + 3 + 0x6000))/6 + dx - 0x1000;
403 my = ((unsigned)(my + 3 + 0x6000))/6 + dy - 0x1000;
405 svq3_mc_dir_part(s, x, y, part_width, part_height, mx, my, 0, 0, dir, avg);
410 /* update mv_cache */
411 if (mode != PREDICT_MODE) {
412 int32_t mv = pack16to32(mx,my);
414 if (part_height == 8 && i < 8) {
415 *(int32_t *) h->mv_cache[dir][scan8[k] + 1*8] = mv;
417 if (part_width == 8 && j < 8) {
418 *(int32_t *) h->mv_cache[dir][scan8[k] + 1 + 1*8] = mv;
421 if (part_width == 8 && j < 8) {
422 *(int32_t *) h->mv_cache[dir][scan8[k] + 1] = mv;
424 if (part_width == 4 || part_height == 4) {
425 *(int32_t *) h->mv_cache[dir][scan8[k]] = mv;
429 /* write back motion vectors */
430 fill_rectangle(s->current_picture.f.motion_val[dir][b_xy],
431 part_width >> 2, part_height >> 2, h->b_stride,
432 pack16to32(mx, my), 4);
439 static int svq3_decode_mb(SVQ3Context *svq3, unsigned int mb_type)
441 H264Context *h = &svq3->h;
442 int i, j, k, m, dir, mode;
446 MpegEncContext *const s = (MpegEncContext *) h;
447 const int mb_xy = h->mb_xy;
448 const int b_xy = 4*s->mb_x + 4*s->mb_y*h->b_stride;
450 h->top_samples_available = (s->mb_y == 0) ? 0x33FF : 0xFFFF;
451 h->left_samples_available = (s->mb_x == 0) ? 0x5F5F : 0xFFFF;
452 h->topright_samples_available = 0xFFFF;
454 if (mb_type == 0) { /* SKIP */
455 if (s->pict_type == AV_PICTURE_TYPE_P || s->next_picture.f.mb_type[mb_xy] == -1) {
456 svq3_mc_dir_part(s, 16*s->mb_x, 16*s->mb_y, 16, 16, 0, 0, 0, 0, 0, 0);
458 if (s->pict_type == AV_PICTURE_TYPE_B) {
459 svq3_mc_dir_part(s, 16*s->mb_x, 16*s->mb_y, 16, 16, 0, 0, 0, 0, 1, 1);
462 mb_type = MB_TYPE_SKIP;
464 mb_type = FFMIN(s->next_picture.f.mb_type[mb_xy], 6);
465 if (svq3_mc_dir(h, mb_type, PREDICT_MODE, 0, 0) < 0)
467 if (svq3_mc_dir(h, mb_type, PREDICT_MODE, 1, 1) < 0)
470 mb_type = MB_TYPE_16x16;
472 } else if (mb_type < 8) { /* INTER */
473 if (svq3->thirdpel_flag && svq3->halfpel_flag == !get_bits1 (&s->gb)) {
474 mode = THIRDPEL_MODE;
475 } else if (svq3->halfpel_flag && svq3->thirdpel_flag == !get_bits1 (&s->gb)) {
482 /* note ref_cache should contain here:
490 for (m = 0; m < 2; m++) {
491 if (s->mb_x > 0 && h->intra4x4_pred_mode[h->mb2br_xy[mb_xy - 1]+6] != -1) {
492 for (i = 0; i < 4; i++) {
493 *(uint32_t *) h->mv_cache[m][scan8[0] - 1 + i*8] = *(uint32_t *) s->current_picture.f.motion_val[m][b_xy - 1 + i*h->b_stride];
496 for (i = 0; i < 4; i++) {
497 *(uint32_t *) h->mv_cache[m][scan8[0] - 1 + i*8] = 0;
501 memcpy(h->mv_cache[m][scan8[0] - 1*8], s->current_picture.f.motion_val[m][b_xy - h->b_stride], 4*2*sizeof(int16_t));
502 memset(&h->ref_cache[m][scan8[0] - 1*8], (h->intra4x4_pred_mode[h->mb2br_xy[mb_xy - s->mb_stride]] == -1) ? PART_NOT_AVAILABLE : 1, 4);
504 if (s->mb_x < (s->mb_width - 1)) {
505 *(uint32_t *) h->mv_cache[m][scan8[0] + 4 - 1*8] = *(uint32_t *) s->current_picture.f.motion_val[m][b_xy - h->b_stride + 4];
506 h->ref_cache[m][scan8[0] + 4 - 1*8] =
507 (h->intra4x4_pred_mode[h->mb2br_xy[mb_xy - s->mb_stride + 1]+6] == -1 ||
508 h->intra4x4_pred_mode[h->mb2br_xy[mb_xy - s->mb_stride ] ] == -1) ? PART_NOT_AVAILABLE : 1;
510 h->ref_cache[m][scan8[0] + 4 - 1*8] = PART_NOT_AVAILABLE;
512 *(uint32_t *) h->mv_cache[m][scan8[0] - 1 - 1*8] = *(uint32_t *) s->current_picture.f.motion_val[m][b_xy - h->b_stride - 1];
513 h->ref_cache[m][scan8[0] - 1 - 1*8] = (h->intra4x4_pred_mode[h->mb2br_xy[mb_xy - s->mb_stride - 1]+3] == -1) ? PART_NOT_AVAILABLE : 1;
515 h->ref_cache[m][scan8[0] - 1 - 1*8] = PART_NOT_AVAILABLE;
517 memset(&h->ref_cache[m][scan8[0] - 1*8 - 1], PART_NOT_AVAILABLE, 8);
519 if (s->pict_type != AV_PICTURE_TYPE_B)
523 /* decode motion vector(s) and form prediction(s) */
524 if (s->pict_type == AV_PICTURE_TYPE_P) {
525 if (svq3_mc_dir(h, (mb_type - 1), mode, 0, 0) < 0)
527 } else { /* AV_PICTURE_TYPE_B */
529 if (svq3_mc_dir(h, 0, mode, 0, 0) < 0)
532 for (i = 0; i < 4; i++) {
533 memset(s->current_picture.f.motion_val[0][b_xy + i*h->b_stride], 0, 4*2*sizeof(int16_t));
537 if (svq3_mc_dir(h, 0, mode, 1, (mb_type == 3)) < 0)
540 for (i = 0; i < 4; i++) {
541 memset(s->current_picture.f.motion_val[1][b_xy + i*h->b_stride], 0, 4*2*sizeof(int16_t));
546 mb_type = MB_TYPE_16x16;
547 } else if (mb_type == 8 || mb_type == 33) { /* INTRA4x4 */
548 memset(h->intra4x4_pred_mode_cache, -1, 8*5*sizeof(int8_t));
552 for (i = 0; i < 4; i++) {
553 h->intra4x4_pred_mode_cache[scan8[0] - 1 + i*8] = h->intra4x4_pred_mode[h->mb2br_xy[mb_xy - 1]+6-i];
555 if (h->intra4x4_pred_mode_cache[scan8[0] - 1] == -1) {
556 h->left_samples_available = 0x5F5F;
560 h->intra4x4_pred_mode_cache[4+8*0] = h->intra4x4_pred_mode[h->mb2br_xy[mb_xy - s->mb_stride]+0];
561 h->intra4x4_pred_mode_cache[5+8*0] = h->intra4x4_pred_mode[h->mb2br_xy[mb_xy - s->mb_stride]+1];
562 h->intra4x4_pred_mode_cache[6+8*0] = h->intra4x4_pred_mode[h->mb2br_xy[mb_xy - s->mb_stride]+2];
563 h->intra4x4_pred_mode_cache[7+8*0] = h->intra4x4_pred_mode[h->mb2br_xy[mb_xy - s->mb_stride]+3];
565 if (h->intra4x4_pred_mode_cache[4+8*0] == -1) {
566 h->top_samples_available = 0x33FF;
570 /* decode prediction codes for luma blocks */
571 for (i = 0; i < 16; i+=2) {
572 vlc = svq3_get_ue_golomb(&s->gb);
575 av_log(h->s.avctx, AV_LOG_ERROR, "luma prediction:%d\n", vlc);
579 left = &h->intra4x4_pred_mode_cache[scan8[i] - 1];
580 top = &h->intra4x4_pred_mode_cache[scan8[i] - 8];
582 left[1] = svq3_pred_1[top[0] + 1][left[0] + 1][svq3_pred_0[vlc][0]];
583 left[2] = svq3_pred_1[top[1] + 1][left[1] + 1][svq3_pred_0[vlc][1]];
585 if (left[1] == -1 || left[2] == -1){
586 av_log(h->s.avctx, AV_LOG_ERROR, "weird prediction\n");
590 } else { /* mb_type == 33, DC_128_PRED block type */
591 for (i = 0; i < 4; i++) {
592 memset(&h->intra4x4_pred_mode_cache[scan8[0] + 8*i], DC_PRED, 4);
596 write_back_intra_pred_mode(h);
599 ff_h264_check_intra4x4_pred_mode(h);
601 h->top_samples_available = (s->mb_y == 0) ? 0x33FF : 0xFFFF;
602 h->left_samples_available = (s->mb_x == 0) ? 0x5F5F : 0xFFFF;
604 for (i = 0; i < 4; i++) {
605 memset(&h->intra4x4_pred_mode_cache[scan8[0] + 8*i], DC_128_PRED, 4);
608 h->top_samples_available = 0x33FF;
609 h->left_samples_available = 0x5F5F;
612 mb_type = MB_TYPE_INTRA4x4;
613 } else { /* INTRA16x16 */
614 dir = i_mb_type_info[mb_type - 8].pred_mode;
615 dir = (dir >> 1) ^ 3*(dir & 1) ^ 1;
617 if ((h->intra16x16_pred_mode = ff_h264_check_intra_pred_mode(h, dir, 0)) == -1){
618 av_log(h->s.avctx, AV_LOG_ERROR, "check_intra_pred_mode = -1\n");
622 cbp = i_mb_type_info[mb_type - 8].cbp;
623 mb_type = MB_TYPE_INTRA16x16;
626 if (!IS_INTER(mb_type) && s->pict_type != AV_PICTURE_TYPE_I) {
627 for (i = 0; i < 4; i++) {
628 memset(s->current_picture.f.motion_val[0][b_xy + i*h->b_stride], 0, 4*2*sizeof(int16_t));
630 if (s->pict_type == AV_PICTURE_TYPE_B) {
631 for (i = 0; i < 4; i++) {
632 memset(s->current_picture.f.motion_val[1][b_xy + i*h->b_stride], 0, 4*2*sizeof(int16_t));
636 if (!IS_INTRA4x4(mb_type)) {
637 memset(h->intra4x4_pred_mode+h->mb2br_xy[mb_xy], DC_PRED, 8);
639 if (!IS_SKIP(mb_type) || s->pict_type == AV_PICTURE_TYPE_B) {
640 memset(h->non_zero_count_cache + 8, 0, 14*8*sizeof(uint8_t));
641 s->dsp.clear_blocks(h->mb+ 0);
642 s->dsp.clear_blocks(h->mb+384);
645 if (!IS_INTRA16x16(mb_type) && (!IS_SKIP(mb_type) || s->pict_type == AV_PICTURE_TYPE_B)) {
646 if ((vlc = svq3_get_ue_golomb(&s->gb)) >= 48U){
647 av_log(h->s.avctx, AV_LOG_ERROR, "cbp_vlc=%d\n", vlc);
651 cbp = IS_INTRA(mb_type) ? golomb_to_intra4x4_cbp[vlc] : golomb_to_inter_cbp[vlc];
653 if (IS_INTRA16x16(mb_type) || (s->pict_type != AV_PICTURE_TYPE_I && s->adaptive_quant && cbp)) {
654 s->qscale += svq3_get_se_golomb(&s->gb);
656 if (s->qscale > 31U){
657 av_log(h->s.avctx, AV_LOG_ERROR, "qscale:%d\n", s->qscale);
661 if (IS_INTRA16x16(mb_type)) {
662 AV_ZERO128(h->mb_luma_dc[0]+0);
663 AV_ZERO128(h->mb_luma_dc[0]+8);
664 if (svq3_decode_block(&s->gb, h->mb_luma_dc, 0, 1)){
665 av_log(h->s.avctx, AV_LOG_ERROR, "error while decoding intra luma dc\n");
671 const int index = IS_INTRA16x16(mb_type) ? 1 : 0;
672 const int type = ((s->qscale < 24 && IS_INTRA4x4(mb_type)) ? 2 : 1);
674 for (i = 0; i < 4; i++) {
675 if ((cbp & (1 << i))) {
676 for (j = 0; j < 4; j++) {
677 k = index ? ((j&1) + 2*(i&1) + 2*(j&2) + 4*(i&2)) : (4*i + j);
678 h->non_zero_count_cache[ scan8[k] ] = 1;
680 if (svq3_decode_block(&s->gb, &h->mb[16*k], index, type)){
681 av_log(h->s.avctx, AV_LOG_ERROR, "error while decoding block\n");
689 for (i = 1; i < 3; ++i) {
690 if (svq3_decode_block(&s->gb, &h->mb[16*16*i], 0, 3)){
691 av_log(h->s.avctx, AV_LOG_ERROR, "error while decoding chroma dc block\n");
697 for (i = 1; i < 3; i++) {
698 for (j = 0; j < 4; j++) {
700 h->non_zero_count_cache[ scan8[k] ] = 1;
702 if (svq3_decode_block(&s->gb, &h->mb[16*k], 1, 1)){
703 av_log(h->s.avctx, AV_LOG_ERROR, "error while decoding chroma ac block\n");
713 s->current_picture.f.mb_type[mb_xy] = mb_type;
715 if (IS_INTRA(mb_type)) {
716 h->chroma_pred_mode = ff_h264_check_intra_pred_mode(h, DC_PRED8x8, 1);
722 static int svq3_decode_slice_header(AVCodecContext *avctx)
724 SVQ3Context *svq3 = avctx->priv_data;
725 H264Context *h = &svq3->h;
726 MpegEncContext *s = &h->s;
727 const int mb_xy = h->mb_xy;
730 header = get_bits(&s->gb, 8);
732 if (((header & 0x9F) != 1 && (header & 0x9F) != 2) || (header & 0x60) == 0) {
734 av_log(avctx, AV_LOG_ERROR, "unsupported slice header (%02X)\n", header);
737 int length = (header >> 5) & 3;
739 svq3->next_slice_index = get_bits_count(&s->gb) + 8*show_bits(&s->gb, 8*length) + 8*length;
741 if (svq3->next_slice_index > s->gb.size_in_bits) {
742 av_log(avctx, AV_LOG_ERROR, "slice after bitstream end\n");
746 s->gb.size_in_bits = svq3->next_slice_index - 8*(length - 1);
747 skip_bits(&s->gb, 8);
749 if (svq3->watermark_key) {
750 uint32_t header = AV_RL32(&s->gb.buffer[(get_bits_count(&s->gb)>>3)+1]);
751 AV_WL32(&s->gb.buffer[(get_bits_count(&s->gb)>>3)+1], header ^ svq3->watermark_key);
754 memcpy((uint8_t *) &s->gb.buffer[get_bits_count(&s->gb) >> 3],
755 &s->gb.buffer[s->gb.size_in_bits >> 3], (length - 1));
757 skip_bits_long(&s->gb, 0);
760 if ((i = svq3_get_ue_golomb(&s->gb)) >= 3U){
761 av_log(h->s.avctx, AV_LOG_ERROR, "illegal slice type %d \n", i);
765 h->slice_type = golomb_to_pict_type[i];
767 if ((header & 0x9F) == 2) {
768 i = (s->mb_num < 64) ? 6 : (1 + av_log2 (s->mb_num - 1));
769 s->mb_skip_run = get_bits(&s->gb, i) - (s->mb_x + (s->mb_y * s->mb_width));
775 h->slice_num = get_bits(&s->gb, 8);
776 s->qscale = get_bits(&s->gb, 5);
777 s->adaptive_quant = get_bits1(&s->gb);
782 if (svq3->unknown_flag) {
787 skip_bits(&s->gb, 2);
789 while (get_bits1(&s->gb)) {
790 skip_bits(&s->gb, 8);
793 /* reset intra predictors and invalidate motion vector references */
795 memset(h->intra4x4_pred_mode+h->mb2br_xy[mb_xy - 1 ]+3, -1, 4*sizeof(int8_t));
796 memset(h->intra4x4_pred_mode+h->mb2br_xy[mb_xy - s->mb_x] , -1, 8*sizeof(int8_t)*s->mb_x);
799 memset(h->intra4x4_pred_mode+h->mb2br_xy[mb_xy - s->mb_stride], -1, 8*sizeof(int8_t)*(s->mb_width - s->mb_x));
802 h->intra4x4_pred_mode[h->mb2br_xy[mb_xy - s->mb_stride - 1]+3] = -1;
809 static av_cold int svq3_decode_init(AVCodecContext *avctx)
811 SVQ3Context *svq3 = avctx->priv_data;
812 H264Context *h = &svq3->h;
813 MpegEncContext *s = &h->s;
815 unsigned char *extradata;
816 unsigned char *extradata_end;
818 int marker_found = 0;
820 if (ff_h264_decode_init(avctx) < 0)
823 s->flags = avctx->flags;
824 s->flags2 = avctx->flags2;
825 s->unrestricted_mv = 1;
827 avctx->pix_fmt = avctx->codec->pix_fmts[0];
829 if (!s->context_initialized) {
830 h->chroma_qp[0] = h->chroma_qp[1] = 4;
832 svq3->halfpel_flag = 1;
833 svq3->thirdpel_flag = 1;
834 svq3->unknown_flag = 0;
837 /* prowl for the "SEQH" marker in the extradata */
838 extradata = (unsigned char *)avctx->extradata;
839 extradata_end = avctx->extradata + avctx->extradata_size;
841 for (m = 0; m + 8 < avctx->extradata_size; m++) {
842 if (!memcmp(extradata, "SEQH", 4)) {
850 /* if a match was found, parse the extra data */
856 size = AV_RB32(&extradata[4]);
857 if (size > extradata_end - extradata - 8)
858 return AVERROR_INVALIDDATA;
859 init_get_bits(&gb, extradata + 8, size*8);
861 /* 'frame size code' and optional 'width, height' */
862 frame_size_code = get_bits(&gb, 3);
863 switch (frame_size_code) {
864 case 0: avctx->width = 160; avctx->height = 120; break;
865 case 1: avctx->width = 128; avctx->height = 96; break;
866 case 2: avctx->width = 176; avctx->height = 144; break;
867 case 3: avctx->width = 352; avctx->height = 288; break;
868 case 4: avctx->width = 704; avctx->height = 576; break;
869 case 5: avctx->width = 240; avctx->height = 180; break;
870 case 6: avctx->width = 320; avctx->height = 240; break;
872 avctx->width = get_bits(&gb, 12);
873 avctx->height = get_bits(&gb, 12);
877 svq3->halfpel_flag = get_bits1(&gb);
878 svq3->thirdpel_flag = get_bits1(&gb);
886 s->low_delay = get_bits1(&gb);
891 while (get_bits1(&gb)) {
895 svq3->unknown_flag = get_bits1(&gb);
896 avctx->has_b_frames = !s->low_delay;
897 if (svq3->unknown_flag) {
899 unsigned watermark_width = svq3_get_ue_golomb(&gb);
900 unsigned watermark_height = svq3_get_ue_golomb(&gb);
901 int u1 = svq3_get_ue_golomb(&gb);
902 int u2 = get_bits(&gb, 8);
903 int u3 = get_bits(&gb, 2);
904 int u4 = svq3_get_ue_golomb(&gb);
905 unsigned long buf_len = watermark_width*watermark_height*4;
906 int offset = (get_bits_count(&gb)+7)>>3;
909 if ((uint64_t)watermark_width*4 > UINT_MAX/watermark_height)
912 buf = av_malloc(buf_len);
913 av_log(avctx, AV_LOG_DEBUG, "watermark size: %dx%d\n", watermark_width, watermark_height);
914 av_log(avctx, AV_LOG_DEBUG, "u1: %x u2: %x u3: %x compressed data size: %d offset: %d\n", u1, u2, u3, u4, offset);
915 if (uncompress(buf, &buf_len, extradata + 8 + offset, size - offset) != Z_OK) {
916 av_log(avctx, AV_LOG_ERROR, "could not uncompress watermark logo\n");
920 svq3->watermark_key = ff_svq1_packet_checksum(buf, buf_len, 0);
921 svq3->watermark_key = svq3->watermark_key << 16 | svq3->watermark_key;
922 av_log(avctx, AV_LOG_DEBUG, "watermark key %#x\n", svq3->watermark_key);
925 av_log(avctx, AV_LOG_ERROR, "this svq3 file contains watermark which need zlib support compiled in\n");
931 s->width = avctx->width;
932 s->height = avctx->height;
934 if (ff_MPV_common_init(s) < 0)
937 h->b_stride = 4*s->mb_width;
939 if (ff_h264_alloc_tables(h) < 0) {
940 av_log(avctx, AV_LOG_ERROR, "svq3 memory allocation failed\n");
941 return AVERROR(ENOMEM);
948 static int svq3_decode_frame(AVCodecContext *avctx,
949 void *data, int *data_size,
952 SVQ3Context *svq3 = avctx->priv_data;
953 H264Context *h = &svq3->h;
954 MpegEncContext *s = &h->s;
955 int buf_size = avpkt->size;
956 int m, mb_type, left;
959 /* special case for last picture */
961 if (s->next_picture_ptr && !s->low_delay) {
962 *(AVFrame *) data = *(AVFrame *) &s->next_picture;
963 s->next_picture_ptr = NULL;
964 *data_size = sizeof(AVFrame);
969 s->mb_x = s->mb_y = h->mb_xy = 0;
971 if (svq3->watermark_key) {
972 av_fast_malloc(&svq3->buf, &svq3->buf_size,
973 buf_size+FF_INPUT_BUFFER_PADDING_SIZE);
975 return AVERROR(ENOMEM);
976 memcpy(svq3->buf, avpkt->data, buf_size);
982 init_get_bits(&s->gb, buf, 8*buf_size);
984 if (svq3_decode_slice_header(avctx))
987 s->pict_type = h->slice_type;
988 s->picture_number = h->slice_num;
990 if (avctx->debug&FF_DEBUG_PICT_INFO){
991 av_log(h->s.avctx, AV_LOG_DEBUG, "%c hpel:%d, tpel:%d aqp:%d qp:%d, slice_num:%02X\n",
992 av_get_picture_type_char(s->pict_type), svq3->halfpel_flag, svq3->thirdpel_flag,
993 s->adaptive_quant, s->qscale, h->slice_num);
996 /* for skipping the frame */
997 s->current_picture.f.pict_type = s->pict_type;
998 s->current_picture.f.key_frame = (s->pict_type == AV_PICTURE_TYPE_I);
1000 /* Skip B-frames if we do not have reference frames. */
1001 if (s->last_picture_ptr == NULL && s->pict_type == AV_PICTURE_TYPE_B)
1003 if ( (avctx->skip_frame >= AVDISCARD_NONREF && s->pict_type == AV_PICTURE_TYPE_B)
1004 ||(avctx->skip_frame >= AVDISCARD_NONKEY && s->pict_type != AV_PICTURE_TYPE_I)
1005 || avctx->skip_frame >= AVDISCARD_ALL)
1008 if (s->next_p_frame_damaged) {
1009 if (s->pict_type == AV_PICTURE_TYPE_B)
1012 s->next_p_frame_damaged = 0;
1015 if (ff_h264_frame_start(h) < 0)
1018 if (s->pict_type == AV_PICTURE_TYPE_B) {
1019 h->frame_num_offset = (h->slice_num - h->prev_frame_num);
1021 if (h->frame_num_offset < 0) {
1022 h->frame_num_offset += 256;
1024 if (h->frame_num_offset == 0 || h->frame_num_offset >= h->prev_frame_num_offset) {
1025 av_log(h->s.avctx, AV_LOG_ERROR, "error in B-frame picture id\n");
1029 h->prev_frame_num = h->frame_num;
1030 h->frame_num = h->slice_num;
1031 h->prev_frame_num_offset = (h->frame_num - h->prev_frame_num);
1033 if (h->prev_frame_num_offset < 0) {
1034 h->prev_frame_num_offset += 256;
1038 for (m = 0; m < 2; m++){
1040 for (i = 0; i < 4; i++){
1042 for (j = -1; j < 4; j++)
1043 h->ref_cache[m][scan8[0] + 8*i + j]= 1;
1045 h->ref_cache[m][scan8[0] + 8*i + j]= PART_NOT_AVAILABLE;
1049 for (s->mb_y = 0; s->mb_y < s->mb_height; s->mb_y++) {
1050 for (s->mb_x = 0; s->mb_x < s->mb_width; s->mb_x++) {
1051 h->mb_xy = s->mb_x + s->mb_y*s->mb_stride;
1053 if ( (get_bits_count(&s->gb) + 7) >= s->gb.size_in_bits &&
1054 ((get_bits_count(&s->gb) & 7) == 0 || show_bits(&s->gb, (-get_bits_count(&s->gb) & 7)) == 0)) {
1056 skip_bits(&s->gb, svq3->next_slice_index - get_bits_count(&s->gb));
1057 s->gb.size_in_bits = 8*buf_size;
1059 if (svq3_decode_slice_header(avctx))
1062 /* TODO: support s->mb_skip_run */
1065 mb_type = svq3_get_ue_golomb(&s->gb);
1067 if (s->pict_type == AV_PICTURE_TYPE_I) {
1069 } else if (s->pict_type == AV_PICTURE_TYPE_B && mb_type >= 4) {
1072 if ((unsigned)mb_type > 33 || svq3_decode_mb(svq3, mb_type)) {
1073 av_log(h->s.avctx, AV_LOG_ERROR, "error while decoding MB %d %d\n", s->mb_x, s->mb_y);
1078 ff_h264_hl_decode_mb (h);
1081 if (s->pict_type != AV_PICTURE_TYPE_B && !s->low_delay) {
1082 s->current_picture.f.mb_type[s->mb_x + s->mb_y * s->mb_stride] =
1083 (s->pict_type == AV_PICTURE_TYPE_P && mb_type < 8) ? (mb_type - 1) : -1;
1087 ff_draw_horiz_band(s, 16*s->mb_y, 16);
1090 left = buf_size*8 - get_bits_count(&s->gb);
1092 if (s->mb_y != s->mb_height || s->mb_x != s->mb_width) {
1093 av_log(avctx, AV_LOG_INFO, "frame num %d incomplete pic x %d y %d left %d\n", avctx->frame_number, s->mb_y, s->mb_x, left);
1094 //av_hex_dump(stderr, buf+buf_size-8, 8);
1098 av_log(avctx, AV_LOG_ERROR, "frame num %d left %d\n", avctx->frame_number, left);
1102 ff_MPV_frame_end(s);
1104 if (s->pict_type == AV_PICTURE_TYPE_B || s->low_delay) {
1105 *(AVFrame *) data = *(AVFrame *) &s->current_picture;
1107 *(AVFrame *) data = *(AVFrame *) &s->last_picture;
1110 /* Do not output the last pic after seeking. */
1111 if (s->last_picture_ptr || s->low_delay) {
1112 *data_size = sizeof(AVFrame);
1118 static int svq3_decode_end(AVCodecContext *avctx)
1120 SVQ3Context *svq3 = avctx->priv_data;
1121 H264Context *h = &svq3->h;
1122 MpegEncContext *s = &h->s;
1124 ff_h264_free_context(h);
1126 ff_MPV_common_end(s);
1128 av_freep(&svq3->buf);
1134 AVCodec ff_svq3_decoder = {
1136 .type = AVMEDIA_TYPE_VIDEO,
1137 .id = CODEC_ID_SVQ3,
1138 .priv_data_size = sizeof(SVQ3Context),
1139 .init = svq3_decode_init,
1140 .close = svq3_decode_end,
1141 .decode = svq3_decode_frame,
1142 .capabilities = CODEC_CAP_DRAW_HORIZ_BAND | CODEC_CAP_DR1 | CODEC_CAP_DELAY,
1143 .long_name = NULL_IF_CONFIG_SMALL("Sorenson Vector Quantizer 3 / Sorenson Video 3 / SVQ3"),
1144 .pix_fmts= (const enum PixelFormat[]){PIX_FMT_YUVJ420P, PIX_FMT_NONE},