3 * Copyright (c) 2002 Fabrice Bellard
4 * Copyright (c) 2004 Roman Shaposhnik
6 * 50 Mbps (DVCPRO50) support
7 * Copyright (c) 2006 Daniel Maas <dmaas@maasdigital.com>
9 * 100 Mbps (DVCPRO HD) support
10 * Initial code by Daniel Maas <dmaas@maasdigital.com> (funded by BBC R&D)
11 * Final code by Roman Shaposhnik
13 * Many thanks to Dan Dennedy <dan@dennedy.org> for providing wealth
14 * of DV technical info.
16 * This file is part of FFmpeg.
18 * FFmpeg is free software; you can redistribute it and/or
19 * modify it under the terms of the GNU Lesser General Public
20 * License as published by the Free Software Foundation; either
21 * version 2.1 of the License, or (at your option) any later version.
23 * FFmpeg is distributed in the hope that it will be useful,
24 * but WITHOUT ANY WARRANTY; without even the implied warranty of
25 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
26 * Lesser General Public License for more details.
28 * You should have received a copy of the GNU Lesser General Public
29 * License along with FFmpeg; if not, write to the Free Software
30 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
38 #include "libavutil/avassert.h"
39 #include "libavutil/imgutils.h"
40 #include "libavutil/internal.h"
41 #include "libavutil/pixdesc.h"
45 #include "dv_profile_internal.h"
50 #include "simple_idct.h"
53 typedef struct BlockInfo {
54 const uint32_t *factor_table;
55 const uint8_t *scan_table;
56 uint8_t pos; /* position in block */
57 void (*idct_put)(uint8_t *dest, ptrdiff_t stride, int16_t *block);
58 uint8_t partial_bit_count;
59 uint32_t partial_bit_buffer;
63 static const int dv_iweight_bits = 14;
65 static const uint16_t dv_iweight_88[64] = {
66 32768, 16705, 16705, 17734, 17032, 17734, 18205, 18081,
67 18081, 18205, 18725, 18562, 19195, 18562, 18725, 19266,
68 19091, 19705, 19705, 19091, 19266, 21407, 19643, 20267,
69 20228, 20267, 19643, 21407, 22725, 21826, 20853, 20806,
70 20806, 20853, 21826, 22725, 23170, 23170, 21407, 21400,
71 21407, 23170, 23170, 24598, 23786, 22018, 22018, 23786,
72 24598, 25251, 24465, 22654, 24465, 25251, 25972, 25172,
73 25172, 25972, 26722, 27969, 26722, 29692, 29692, 31521,
75 static const uint16_t dv_iweight_248[64] = {
76 32768, 16384, 16705, 16705, 17734, 17734, 17734, 17734,
77 18081, 18081, 18725, 18725, 21407, 21407, 19091, 19091,
78 19195, 19195, 18205, 18205, 18725, 18725, 19705, 19705,
79 20267, 20267, 21826, 21826, 23170, 23170, 20806, 20806,
80 20267, 20267, 19266, 19266, 21407, 21407, 20853, 20853,
81 21400, 21400, 23786, 23786, 24465, 24465, 22018, 22018,
82 23170, 23170, 22725, 22725, 24598, 24598, 24465, 24465,
83 25172, 25172, 27969, 27969, 25972, 25972, 29692, 29692
87 * The "inverse" DV100 weights are actually just the spec weights (zig-zagged).
89 static const uint16_t dv_iweight_1080_y[64] = {
90 128, 16, 16, 17, 17, 17, 18, 18,
91 18, 18, 18, 18, 19, 18, 18, 19,
92 19, 19, 19, 19, 19, 42, 38, 40,
93 40, 40, 38, 42, 44, 43, 41, 41,
94 41, 41, 43, 44, 45, 45, 42, 42,
95 42, 45, 45, 48, 46, 43, 43, 46,
96 48, 49, 48, 44, 48, 49, 101, 98,
97 98, 101, 104, 109, 104, 116, 116, 123,
99 static const uint16_t dv_iweight_1080_c[64] = {
100 128, 16, 16, 17, 17, 17, 25, 25,
101 25, 25, 26, 25, 26, 25, 26, 26,
102 26, 27, 27, 26, 26, 42, 38, 40,
103 40, 40, 38, 42, 44, 43, 41, 41,
104 41, 41, 43, 44, 91, 91, 84, 84,
105 84, 91, 91, 96, 93, 86, 86, 93,
106 96, 197, 191, 177, 191, 197, 203, 197,
107 197, 203, 209, 219, 209, 232, 232, 246,
109 static const uint16_t dv_iweight_720_y[64] = {
110 128, 16, 16, 17, 17, 17, 18, 18,
111 18, 18, 18, 18, 19, 18, 18, 19,
112 19, 19, 19, 19, 19, 42, 38, 40,
113 40, 40, 38, 42, 44, 43, 41, 41,
114 41, 41, 43, 44, 68, 68, 63, 63,
115 63, 68, 68, 96, 92, 86, 86, 92,
116 96, 98, 96, 88, 96, 98, 202, 196,
117 196, 202, 208, 218, 208, 232, 232, 246,
119 static const uint16_t dv_iweight_720_c[64] = {
120 128, 24, 24, 26, 26, 26, 36, 36,
121 36, 36, 36, 36, 38, 36, 36, 38,
122 38, 38, 38, 38, 38, 84, 76, 80,
123 80, 80, 76, 84, 88, 86, 82, 82,
124 82, 82, 86, 88, 182, 182, 168, 168,
125 168, 182, 182, 192, 186, 192, 172, 186,
126 192, 394, 382, 354, 382, 394, 406, 394,
127 394, 406, 418, 438, 418, 464, 464, 492,
130 static void dv_init_weight_tables(DVVideoContext *ctx, const AVDVProfile *d)
133 uint32_t *factor1 = &ctx->idct_factor[0],
134 *factor2 = &ctx->idct_factor[DV_PROFILE_IS_HD(d) ? 4096 : 2816];
136 if (DV_PROFILE_IS_HD(d)) {
137 /* quantization quanta by QNO for DV100 */
138 static const uint8_t dv100_qstep[16] = {
139 1, /* QNO = 0 and 1 both have no quantization */
141 2, 3, 4, 5, 6, 7, 8, 16, 18, 20, 22, 24, 28, 52
143 const uint16_t *iweight1, *iweight2;
145 if (d->height == 720) {
146 iweight1 = &dv_iweight_720_y[0];
147 iweight2 = &dv_iweight_720_c[0];
149 iweight1 = &dv_iweight_1080_y[0];
150 iweight2 = &dv_iweight_1080_c[0];
152 for (c = 0; c < 4; c++) {
153 for (s = 0; s < 16; s++) {
154 for (i = 0; i < 64; i++) {
155 *factor1++ = (dv100_qstep[s] << (c + 9)) * iweight1[i];
156 *factor2++ = (dv100_qstep[s] << (c + 9)) * iweight2[i];
161 static const uint8_t dv_quant_areas[4] = { 6, 21, 43, 64 };
162 const uint16_t *iweight1 = &dv_iweight_88[0];
163 for (j = 0; j < 2; j++, iweight1 = &dv_iweight_248[0]) {
164 for (s = 0; s < 22; s++) {
165 for (i = c = 0; c < 4; c++) {
166 for (; i < dv_quant_areas[c]; i++) {
167 *factor1 = iweight1[i] << (ff_dv_quant_shifts[s][c] + 1);
168 *factor2++ = (*factor1++) << 1;
176 static av_cold int dvvideo_decode_init(AVCodecContext *avctx)
178 DVVideoContext *s = avctx->priv_data;
181 ff_idctdsp_init(&s->idsp, avctx);
183 for (i = 0; i < 64; i++)
184 s->dv_zigzag[0][i] = s->idsp.idct_permutation[ff_zigzag_direct[i]];
187 for (i = 0; i < 64; i++){
188 int j = ff_dv_zigzag248_direct[i];
189 s->dv_zigzag[1][i] = s->idsp.idct_permutation[(j & 7) + (j & 8) * 4 + (j & 48) / 2];
192 memcpy(s->dv_zigzag[1], ff_dv_zigzag248_direct, sizeof(s->dv_zigzag[1]));
194 s->idct_put[0] = s->idsp.idct_put;
195 s->idct_put[1] = ff_simple_idct248_put;
197 return ff_dvvideo_init(avctx);
200 /* decode AC coefficients */
201 static void dv_decode_ac(GetBitContext *gb, BlockInfo *mb, int16_t *block)
203 int last_index = gb->size_in_bits;
204 const uint8_t *scan_table = mb->scan_table;
205 const uint32_t *factor_table = mb->factor_table;
207 int partial_bit_count = mb->partial_bit_count;
208 int level, run, vlc_len, index;
210 OPEN_READER_NOSIZE(re, gb);
211 UPDATE_CACHE(re, gb);
213 /* if we must parse a partial VLC, we do it here */
214 if (partial_bit_count > 0) {
215 re_cache = re_cache >> partial_bit_count |
216 mb->partial_bit_buffer;
217 re_index -= partial_bit_count;
218 mb->partial_bit_count = 0;
221 /* get the AC coefficients until last_index is reached */
223 ff_dlog(NULL, "%2d: bits=%04"PRIx32" index=%u\n",
224 pos, SHOW_UBITS(re, gb, 16), re_index);
225 /* our own optimized GET_RL_VLC */
226 index = NEG_USR32(re_cache, TEX_VLC_BITS);
227 vlc_len = ff_dv_rl_vlc[index].len;
229 index = NEG_USR32((unsigned) re_cache << TEX_VLC_BITS, -vlc_len) +
230 ff_dv_rl_vlc[index].level;
231 vlc_len = TEX_VLC_BITS - vlc_len;
233 level = ff_dv_rl_vlc[index].level;
234 run = ff_dv_rl_vlc[index].run;
236 /* gotta check if we're still within gb boundaries */
237 if (re_index + vlc_len > last_index) {
238 /* should be < 16 bits otherwise a codeword could have been parsed */
239 mb->partial_bit_count = last_index - re_index;
240 mb->partial_bit_buffer = re_cache & ~(-1u >> mb->partial_bit_count);
241 re_index = last_index;
246 ff_dlog(NULL, "run=%d level=%d\n", run, level);
251 level = (level * factor_table[pos] + (1 << (dv_iweight_bits - 1))) >>
253 block[scan_table[pos]] = level;
255 UPDATE_CACHE(re, gb);
257 CLOSE_READER(re, gb);
261 static inline void bit_copy(PutBitContext *pb, GetBitContext *gb)
263 int bits_left = get_bits_left(gb);
264 while (bits_left >= MIN_CACHE_BITS) {
265 put_bits(pb, MIN_CACHE_BITS, get_bits(gb, MIN_CACHE_BITS));
266 bits_left -= MIN_CACHE_BITS;
269 put_bits(pb, bits_left, get_bits(gb, bits_left));
272 static av_always_inline void put_block_8x4(int16_t *block, uint8_t *restrict p, int stride)
275 const uint8_t *cm = ff_crop_tab + MAX_NEG_CROP;
277 for (i = 0; i < 4; i++) {
278 for (j = 0; j < 8; j++)
285 static void dv100_idct_put_last_row_field_chroma(DVVideoContext *s, uint8_t *data,
286 int stride, int16_t *blocks)
288 s->idsp.idct(blocks + 0*64);
289 s->idsp.idct(blocks + 1*64);
291 put_block_8x4(blocks+0*64, data, stride<<1);
292 put_block_8x4(blocks+0*64 + 4*8, data + 8, stride<<1);
293 put_block_8x4(blocks+1*64, data + stride, stride<<1);
294 put_block_8x4(blocks+1*64 + 4*8, data + 8 + stride, stride<<1);
297 static void dv100_idct_put_last_row_field_luma(DVVideoContext *s, uint8_t *data,
298 int stride, int16_t *blocks)
300 s->idsp.idct(blocks + 0*64);
301 s->idsp.idct(blocks + 1*64);
302 s->idsp.idct(blocks + 2*64);
303 s->idsp.idct(blocks + 3*64);
305 put_block_8x4(blocks+0*64, data, stride<<1);
306 put_block_8x4(blocks+0*64 + 4*8, data + 16, stride<<1);
307 put_block_8x4(blocks+1*64, data + 8, stride<<1);
308 put_block_8x4(blocks+1*64 + 4*8, data + 24, stride<<1);
309 put_block_8x4(blocks+2*64, data + stride, stride<<1);
310 put_block_8x4(blocks+2*64 + 4*8, data + 16 + stride, stride<<1);
311 put_block_8x4(blocks+3*64, data + 8 + stride, stride<<1);
312 put_block_8x4(blocks+3*64 + 4*8, data + 24 + stride, stride<<1);
315 /* mb_x and mb_y are in units of 8 pixels */
316 static int dv_decode_video_segment(AVCodecContext *avctx, void *arg)
318 DVVideoContext *s = avctx->priv_data;
319 DVwork_chunk *work_chunk = arg;
320 int quant, dc, dct_mode, class1, j;
321 int mb_index, mb_x, mb_y, last_index;
322 int y_stride, linesize;
323 int16_t *block, *block1;
326 const uint8_t *buf_ptr;
327 PutBitContext pb, vs_pb;
329 BlockInfo mb_data[5 * DV_MAX_BPM], *mb, *mb1;
330 LOCAL_ALIGNED_16(int16_t, sblock, [5 * DV_MAX_BPM], [64]);
331 LOCAL_ALIGNED_16(uint8_t, mb_bit_buffer, [80 + AV_INPUT_BUFFER_PADDING_SIZE]); /* allow some slack */
332 LOCAL_ALIGNED_16(uint8_t, vs_bit_buffer, [80 * 5 + AV_INPUT_BUFFER_PADDING_SIZE]); /* allow some slack */
333 const int log2_blocksize = 3-s->avctx->lowres;
334 int is_field_mode[5];
335 int vs_bit_buffer_damaged = 0;
336 int mb_bit_buffer_damaged[5] = {0};
340 av_assert1((((int) mb_bit_buffer) & 7) == 0);
341 av_assert1((((int) vs_bit_buffer) & 7) == 0);
345 memset(sblock, 0, 5 * DV_MAX_BPM * sizeof(*sblock));
347 /* pass 1: read DC and AC coefficients in blocks */
348 buf_ptr = &s->buf[work_chunk->buf_offset * 80];
349 block1 = &sblock[0][0];
351 init_put_bits(&vs_pb, vs_bit_buffer, 5 * 80);
352 for (mb_index = 0; mb_index < 5; mb_index++, mb1 += s->sys->bpm, block1 += s->sys->bpm * 64) {
354 quant = buf_ptr[3] & 0x0f;
355 if (avctx->error_concealment) {
356 if ((buf_ptr[3] >> 4) == 0x0E)
357 vs_bit_buffer_damaged = 1;
359 sta = buf_ptr[3] >> 4;
360 } else if (sta != (buf_ptr[3] >> 4))
361 vs_bit_buffer_damaged = 1;
364 init_put_bits(&pb, mb_bit_buffer, 80);
367 is_field_mode[mb_index] = 0;
368 for (j = 0; j < s->sys->bpm; j++) {
369 last_index = s->sys->block_sizes[j];
370 init_get_bits(&gb, buf_ptr, last_index);
373 dc = get_sbits(&gb, 9);
374 dct_mode = get_bits1(&gb);
375 class1 = get_bits(&gb, 2);
376 if (DV_PROFILE_IS_HD(s->sys)) {
377 mb->idct_put = s->idct_put[0];
378 mb->scan_table = s->dv_zigzag[0];
379 mb->factor_table = &s->idct_factor[(j >= 4) * 4 * 16 * 64 +
382 is_field_mode[mb_index] |= !j && dct_mode;
384 mb->idct_put = s->idct_put[dct_mode && log2_blocksize == 3];
385 mb->scan_table = s->dv_zigzag[dct_mode];
387 &s->idct_factor[(class1 == 3) * 2 * 22 * 64 +
389 (quant + ff_dv_quant_offset[class1]) * 64];
392 /* convert to unsigned because 128 is not added in the
396 buf_ptr += last_index >> 3;
398 mb->partial_bit_count = 0;
400 ff_dlog(avctx, "MB block: %d, %d ", mb_index, j);
401 dv_decode_ac(&gb, mb, block);
403 /* write the remaining bits in a new buffer only if the
404 * block is finished */
407 if (mb->pos >= 64 && mb->pos < 127)
408 vs_bit_buffer_damaged = mb_bit_buffer_damaged[mb_index] = 1;
414 if (mb_bit_buffer_damaged[mb_index] > 0)
417 /* pass 2: we can do it just after */
418 ff_dlog(avctx, "***pass 2 size=%d MB#=%d\n", put_bits_count(&pb), mb_index);
421 init_get_bits(&gb, mb_bit_buffer, put_bits_count(&pb));
422 put_bits32(&pb, 0); // padding must be zeroed
424 for (j = 0; j < s->sys->bpm; j++, block += 64, mb++) {
425 if (mb->pos < 64 && get_bits_left(&gb) > 0) {
426 dv_decode_ac(&gb, mb, block);
427 /* if still not finished, no need to parse other blocks */
431 vs_bit_buffer_damaged = mb_bit_buffer_damaged[mb_index] = 1;
434 /* all blocks are finished, so the extra bytes can be used at
435 * the video segment level */
436 if (j >= s->sys->bpm)
437 bit_copy(&vs_pb, &gb);
440 /* we need a pass over the whole video segment */
441 ff_dlog(avctx, "***pass 3 size=%d\n", put_bits_count(&vs_pb));
442 block = &sblock[0][0];
444 init_get_bits(&gb, vs_bit_buffer, put_bits_count(&vs_pb));
445 put_bits32(&vs_pb, 0); // padding must be zeroed
446 flush_put_bits(&vs_pb);
447 for (mb_index = 0; mb_index < 5; mb_index++) {
448 for (j = 0; j < s->sys->bpm; j++) {
449 if (mb->pos < 64 && get_bits_left(&gb) > 0 && !vs_bit_buffer_damaged) {
450 ff_dlog(avctx, "start %d:%d\n", mb_index, j);
451 dv_decode_ac(&gb, mb, block);
454 if (mb->pos >= 64 && mb->pos < 127) {
455 av_log(avctx, AV_LOG_ERROR,
456 "AC EOB marker is absent pos=%d\n", mb->pos);
457 vs_bit_buffer_damaged = 1;
463 if (vs_bit_buffer_damaged && !retried) {
464 av_log(avctx, AV_LOG_ERROR, "Concealing bitstream errors\n");
469 /* compute idct and place blocks */
470 block = &sblock[0][0];
472 for (mb_index = 0; mb_index < 5; mb_index++) {
473 dv_calculate_mb_xy(s, work_chunk, mb_index, &mb_x, &mb_y);
475 /* idct_put'ting luminance */
476 if ((s->sys->pix_fmt == AV_PIX_FMT_YUV420P) ||
477 (s->sys->pix_fmt == AV_PIX_FMT_YUV411P && mb_x >= (704 / 8)) ||
478 (s->sys->height >= 720 && mb_y != 134)) {
479 y_stride = (s->frame->linesize[0] <<
480 ((!is_field_mode[mb_index]) * log2_blocksize));
482 y_stride = (2 << log2_blocksize);
484 y_ptr = s->frame->data[0] +
485 ((mb_y * s->frame->linesize[0] + mb_x) << log2_blocksize);
486 if (mb_y == 134 && is_field_mode[mb_index]) {
487 dv100_idct_put_last_row_field_luma(s, y_ptr, s->frame->linesize[0], block);
489 linesize = s->frame->linesize[0] << is_field_mode[mb_index];
490 mb[0].idct_put(y_ptr, linesize, block + 0 * 64);
491 if (s->sys->video_stype == 4) { /* SD 422 */
492 mb[2].idct_put(y_ptr + (1 << log2_blocksize), linesize, block + 2 * 64);
494 mb[1].idct_put(y_ptr + (1 << log2_blocksize), linesize, block + 1 * 64);
495 mb[2].idct_put(y_ptr + y_stride, linesize, block + 2 * 64);
496 mb[3].idct_put(y_ptr + (1 << log2_blocksize) + y_stride, linesize, block + 3 * 64);
502 /* idct_put'ting chrominance */
503 c_offset = (((mb_y >> (s->sys->pix_fmt == AV_PIX_FMT_YUV420P)) * s->frame->linesize[1] +
504 (mb_x >> ((s->sys->pix_fmt == AV_PIX_FMT_YUV411P) ? 2 : 1))) << log2_blocksize);
505 for (j = 2; j; j--) {
506 uint8_t *c_ptr = s->frame->data[j] + c_offset;
507 if (s->sys->pix_fmt == AV_PIX_FMT_YUV411P && mb_x >= (704 / 8)) {
508 uint64_t aligned_pixels[64 / 8];
509 uint8_t *pixels = (uint8_t *) aligned_pixels;
510 uint8_t *c_ptr1, *ptr1;
512 mb->idct_put(pixels, 8, block);
513 for (y = 0; y < (1 << log2_blocksize); y++, c_ptr += s->frame->linesize[j], pixels += 8) {
514 ptr1 = pixels + ((1 << (log2_blocksize))>>1);
515 c_ptr1 = c_ptr + (s->frame->linesize[j] << log2_blocksize);
516 for (x = 0; x < (1 << FFMAX(log2_blocksize - 1, 0)); x++) {
517 c_ptr[x] = pixels[x];
524 y_stride = (mb_y == 134) ? (1 << log2_blocksize) :
525 s->frame->linesize[j] << ((!is_field_mode[mb_index]) * log2_blocksize);
526 if (mb_y == 134 && is_field_mode[mb_index]) {
527 dv100_idct_put_last_row_field_chroma(s, c_ptr, s->frame->linesize[j], block);
531 linesize = s->frame->linesize[j] << is_field_mode[mb_index];
532 (mb++)->idct_put(c_ptr, linesize, block);
534 if (s->sys->bpm == 8) {
535 (mb++)->idct_put(c_ptr + y_stride, linesize, block);
545 /* NOTE: exactly one frame must be given (120000 bytes for NTSC,
546 * 144000 bytes for PAL - or twice those for 50Mbps) */
547 static int dvvideo_decode_frame(AVCodecContext *avctx, void *data,
548 int *got_frame, AVPacket *avpkt)
550 uint8_t *buf = avpkt->data;
551 int buf_size = avpkt->size;
552 DVVideoContext *s = avctx->priv_data;
553 ThreadFrame frame = { .f = data };
554 const uint8_t *vsc_pack;
555 int apt, is16_9, ret;
556 const AVDVProfile *sys;
558 sys = ff_dv_frame_profile(avctx, s->sys, buf, buf_size);
559 if (!sys || buf_size < sys->frame_size) {
560 av_log(avctx, AV_LOG_ERROR, "could not find dv frame profile\n");
561 return -1; /* NOTE: we only accept several full frames */
565 ret = ff_dv_init_dynamic_tables(s, sys);
567 av_log(avctx, AV_LOG_ERROR, "Error initializing the work tables.\n");
570 dv_init_weight_tables(s, sys);
575 frame.f->key_frame = 1;
576 frame.f->pict_type = AV_PICTURE_TYPE_I;
577 avctx->pix_fmt = s->sys->pix_fmt;
578 avctx->framerate = av_inv_q(s->sys->time_base);
580 ret = ff_set_dimensions(avctx, s->sys->width, s->sys->height);
584 /* Determine the codec's sample_aspect ratio from the packet */
585 vsc_pack = buf + 80 * 5 + 48 + 5;
586 if (*vsc_pack == dv_video_control) {
588 is16_9 = (vsc_pack[2] & 0x07) == 0x02 ||
589 (!apt && (vsc_pack[2] & 0x07) == 0x07);
590 ff_set_sar(avctx, s->sys->sar[is16_9]);
593 if ((ret = ff_thread_get_buffer(avctx, &frame, 0)) < 0)
596 /* Determine the codec's field order from the packet */
597 if ( *vsc_pack == dv_video_control ) {
598 if (avctx->height == 720) {
599 frame.f->interlaced_frame = 0;
600 frame.f->top_field_first = 0;
601 } else if (avctx->height == 1080) {
602 frame.f->interlaced_frame = 1;
603 frame.f->top_field_first = (vsc_pack[3] & 0x40) == 0x40;
605 frame.f->interlaced_frame = (vsc_pack[3] & 0x10) == 0x10;
606 frame.f->top_field_first = !(vsc_pack[3] & 0x40);
611 avctx->execute(avctx, dv_decode_video_segment, s->work_chunks, NULL,
612 dv_work_pool_size(s->sys), sizeof(DVwork_chunk));
619 return s->sys->frame_size;
622 AVCodec ff_dvvideo_decoder = {
624 .long_name = NULL_IF_CONFIG_SMALL("DV (Digital Video)"),
625 .type = AVMEDIA_TYPE_VIDEO,
626 .id = AV_CODEC_ID_DVVIDEO,
627 .priv_data_size = sizeof(DVVideoContext),
628 .init = dvvideo_decode_init,
629 .decode = dvvideo_decode_frame,
630 .capabilities = AV_CODEC_CAP_DR1 | AV_CODEC_CAP_FRAME_THREADS | AV_CODEC_CAP_SLICE_THREADS,