2 * Copyright (c) 2010-2011 Maxim Poliakovski
3 * Copyright (c) 2010-2011 Elvis Presley
5 * This file is part of FFmpeg.
7 * FFmpeg is free software; you can redistribute it and/or
8 * modify it under the terms of the GNU Lesser General Public
9 * License as published by the Free Software Foundation; either
10 * version 2.1 of the License, or (at your option) any later version.
12 * FFmpeg is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15 * Lesser General Public License for more details.
17 * You should have received a copy of the GNU Lesser General Public
18 * License along with FFmpeg; if not, write to the Free Software
19 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
24 * Known FOURCCs: 'apch' (HQ), 'apcn' (SD), 'apcs' (LT), 'acpo' (Proxy), 'ap4h' (4444)
29 #define LONG_BITSTREAM_READER
31 #include "libavutil/internal.h"
37 #include "simple_idct.h"
38 #include "proresdec.h"
39 #include "proresdata.h"
42 static void permute(uint8_t *dst, const uint8_t *src, const uint8_t permutation[64])
45 for (i = 0; i < 64; i++)
46 dst[i] = permutation[src[i]];
49 static void unpack_alpha_10(GetBitContext *gb, uint16_t *dst, int num_coeffs,
52 const int mask = (1 << num_bits) - 1;
53 int i, idx, val, alpha_val;
60 val = get_bits(gb, num_bits);
63 val = get_bits(gb, num_bits == 16 ? 7 : 4);
69 alpha_val = (alpha_val + val) & mask;
71 dst[idx++] = alpha_val >> 6;
73 dst[idx++] = (alpha_val << 2) | (alpha_val >> 6);
75 if (idx >= num_coeffs)
77 } while (get_bits_left(gb)>0 && get_bits1(gb));
78 val = get_bits(gb, 4);
80 val = get_bits(gb, 11);
81 if (idx + val > num_coeffs)
82 val = num_coeffs - idx;
84 for (i = 0; i < val; i++)
85 dst[idx++] = alpha_val >> 6;
87 for (i = 0; i < val; i++)
88 dst[idx++] = (alpha_val << 2) | (alpha_val >> 6);
91 } while (idx < num_coeffs);
94 static av_cold int decode_init(AVCodecContext *avctx)
97 ProresContext *ctx = avctx->priv_data;
98 uint8_t idct_permutation[64];
100 avctx->bits_per_raw_sample = 10;
102 switch (avctx->codec_tag) {
103 case MKTAG('a','p','c','o'):
104 avctx->profile = FF_PROFILE_PRORES_PROXY;
106 case MKTAG('a','p','c','s'):
107 avctx->profile = FF_PROFILE_PRORES_LT;
109 case MKTAG('a','p','c','n'):
110 avctx->profile = FF_PROFILE_PRORES_STANDARD;
112 case MKTAG('a','p','c','h'):
113 avctx->profile = FF_PROFILE_PRORES_HQ;
115 case MKTAG('a','p','4','h'):
116 avctx->profile = FF_PROFILE_PRORES_4444;
118 case MKTAG('a','p','4','x'):
119 avctx->profile = FF_PROFILE_PRORES_XQ;
122 avctx->profile = FF_PROFILE_UNKNOWN;
123 av_log(avctx, AV_LOG_WARNING, "Unknown prores profile %d\n", avctx->codec_tag);
126 ff_blockdsp_init(&ctx->bdsp, avctx);
127 ret = ff_proresdsp_init(&ctx->prodsp, avctx);
129 av_log(avctx, AV_LOG_ERROR, "Fail to init proresdsp for bits per raw sample %d\n", avctx->bits_per_raw_sample);
133 ff_init_scantable_permutation(idct_permutation,
134 ctx->prodsp.idct_permutation_type);
136 permute(ctx->progressive_scan, ff_prores_progressive_scan, idct_permutation);
137 permute(ctx->interlaced_scan, ff_prores_interlaced_scan, idct_permutation);
139 if (avctx->bits_per_raw_sample == 10){
140 ctx->unpack_alpha = unpack_alpha_10;
142 av_log(avctx, AV_LOG_ERROR, "Fail to set unpack_alpha for bits per raw sample %d\n", avctx->bits_per_raw_sample);
148 static int decode_frame_header(ProresContext *ctx, const uint8_t *buf,
149 const int data_size, AVCodecContext *avctx)
151 int hdr_size, width, height, flags;
155 hdr_size = AV_RB16(buf);
156 ff_dlog(avctx, "header size %d\n", hdr_size);
157 if (hdr_size > data_size) {
158 av_log(avctx, AV_LOG_ERROR, "error, wrong header size\n");
159 return AVERROR_INVALIDDATA;
162 version = AV_RB16(buf + 2);
163 ff_dlog(avctx, "%.4s version %d\n", buf+4, version);
165 av_log(avctx, AV_LOG_ERROR, "unsupported version: %d\n", version);
166 return AVERROR_PATCHWELCOME;
169 width = AV_RB16(buf + 8);
170 height = AV_RB16(buf + 10);
171 if (width != avctx->width || height != avctx->height) {
172 av_log(avctx, AV_LOG_ERROR, "picture resolution change: %dx%d -> %dx%d\n",
173 avctx->width, avctx->height, width, height);
174 return AVERROR_PATCHWELCOME;
177 ctx->frame_type = (buf[12] >> 2) & 3;
178 ctx->alpha_info = buf[17] & 0xf;
180 if (ctx->alpha_info > 2) {
181 av_log(avctx, AV_LOG_ERROR, "Invalid alpha mode %d\n", ctx->alpha_info);
182 return AVERROR_INVALIDDATA;
184 if (avctx->skip_alpha) ctx->alpha_info = 0;
186 ff_dlog(avctx, "frame type %d\n", ctx->frame_type);
188 if (ctx->frame_type == 0) {
189 ctx->scan = ctx->progressive_scan; // permuted
191 ctx->scan = ctx->interlaced_scan; // permuted
192 ctx->frame->interlaced_frame = 1;
193 ctx->frame->top_field_first = ctx->frame_type == 1;
196 if (ctx->alpha_info) {
197 avctx->pix_fmt = (buf[12] & 0xC0) == 0xC0 ? AV_PIX_FMT_YUVA444P10 : AV_PIX_FMT_YUVA422P10;
199 avctx->pix_fmt = (buf[12] & 0xC0) == 0xC0 ? AV_PIX_FMT_YUV444P10 : AV_PIX_FMT_YUV422P10;
202 avctx->color_primaries = buf[14];
203 avctx->color_trc = buf[15];
204 avctx->colorspace = buf[16];
205 avctx->color_range = AVCOL_RANGE_MPEG;
209 ff_dlog(avctx, "flags %x\n", flags);
212 if(buf + data_size - ptr < 64) {
213 av_log(avctx, AV_LOG_ERROR, "Header truncated\n");
214 return AVERROR_INVALIDDATA;
216 permute(ctx->qmat_luma, ctx->prodsp.idct_permutation, ptr);
219 memset(ctx->qmat_luma, 4, 64);
223 if(buf + data_size - ptr < 64) {
224 av_log(avctx, AV_LOG_ERROR, "Header truncated\n");
225 return AVERROR_INVALIDDATA;
227 permute(ctx->qmat_chroma, ctx->prodsp.idct_permutation, ptr);
229 memset(ctx->qmat_chroma, 4, 64);
235 static int decode_picture_header(AVCodecContext *avctx, const uint8_t *buf, const int buf_size)
237 ProresContext *ctx = avctx->priv_data;
238 int i, hdr_size, slice_count;
239 unsigned pic_data_size;
240 int log2_slice_mb_width, log2_slice_mb_height;
241 int slice_mb_count, mb_x, mb_y;
242 const uint8_t *data_ptr, *index_ptr;
244 hdr_size = buf[0] >> 3;
245 if (hdr_size < 8 || hdr_size > buf_size) {
246 av_log(avctx, AV_LOG_ERROR, "error, wrong picture header size\n");
247 return AVERROR_INVALIDDATA;
250 pic_data_size = AV_RB32(buf + 1);
251 if (pic_data_size > buf_size) {
252 av_log(avctx, AV_LOG_ERROR, "error, wrong picture data size\n");
253 return AVERROR_INVALIDDATA;
256 log2_slice_mb_width = buf[7] >> 4;
257 log2_slice_mb_height = buf[7] & 0xF;
258 if (log2_slice_mb_width > 3 || log2_slice_mb_height) {
259 av_log(avctx, AV_LOG_ERROR, "unsupported slice resolution: %dx%d\n",
260 1 << log2_slice_mb_width, 1 << log2_slice_mb_height);
261 return AVERROR_INVALIDDATA;
264 ctx->mb_width = (avctx->width + 15) >> 4;
266 ctx->mb_height = (avctx->height + 31) >> 5;
268 ctx->mb_height = (avctx->height + 15) >> 4;
270 // QT ignores the written value
271 // slice_count = AV_RB16(buf + 5);
272 slice_count = ctx->mb_height * ((ctx->mb_width >> log2_slice_mb_width) +
273 av_popcount(ctx->mb_width & (1 << log2_slice_mb_width) - 1));
275 if (ctx->slice_count != slice_count || !ctx->slices) {
276 av_freep(&ctx->slices);
277 ctx->slice_count = 0;
278 ctx->slices = av_mallocz_array(slice_count, sizeof(*ctx->slices));
280 return AVERROR(ENOMEM);
281 ctx->slice_count = slice_count;
285 return AVERROR(EINVAL);
287 if (hdr_size + slice_count*2 > buf_size) {
288 av_log(avctx, AV_LOG_ERROR, "error, wrong slice count\n");
289 return AVERROR_INVALIDDATA;
292 // parse slice information
293 index_ptr = buf + hdr_size;
294 data_ptr = index_ptr + slice_count*2;
296 slice_mb_count = 1 << log2_slice_mb_width;
300 for (i = 0; i < slice_count; i++) {
301 SliceContext *slice = &ctx->slices[i];
303 slice->data = data_ptr;
304 data_ptr += AV_RB16(index_ptr + i*2);
306 while (ctx->mb_width - mb_x < slice_mb_count)
307 slice_mb_count >>= 1;
311 slice->mb_count = slice_mb_count;
312 slice->data_size = data_ptr - slice->data;
314 if (slice->data_size < 6) {
315 av_log(avctx, AV_LOG_ERROR, "error, wrong slice data size\n");
316 return AVERROR_INVALIDDATA;
319 mb_x += slice_mb_count;
320 if (mb_x == ctx->mb_width) {
321 slice_mb_count = 1 << log2_slice_mb_width;
325 if (data_ptr > buf + buf_size) {
326 av_log(avctx, AV_LOG_ERROR, "error, slice out of bounds\n");
327 return AVERROR_INVALIDDATA;
331 if (mb_x || mb_y != ctx->mb_height) {
332 av_log(avctx, AV_LOG_ERROR, "error wrong mb count y %d h %d\n",
333 mb_y, ctx->mb_height);
334 return AVERROR_INVALIDDATA;
337 return pic_data_size;
340 #define DECODE_CODEWORD(val, codebook, SKIP) \
342 unsigned int rice_order, exp_order, switch_bits; \
343 unsigned int q, buf, bits; \
345 UPDATE_CACHE(re, gb); \
346 buf = GET_CACHE(re, gb); \
348 /* number of bits to switch between rice and exp golomb */ \
349 switch_bits = codebook & 3; \
350 rice_order = codebook >> 5; \
351 exp_order = (codebook >> 2) & 7; \
353 q = 31 - av_log2(buf); \
355 if (q > switch_bits) { /* exp golomb */ \
356 bits = exp_order - switch_bits + (q<<1); \
357 if (bits > FFMIN(MIN_CACHE_BITS, 31)) \
358 return AVERROR_INVALIDDATA; \
359 val = SHOW_UBITS(re, gb, bits) - (1 << exp_order) + \
360 ((switch_bits + 1) << rice_order); \
361 SKIP(re, gb, bits); \
362 } else if (rice_order) { \
363 SKIP_BITS(re, gb, q+1); \
364 val = (q << rice_order) + SHOW_UBITS(re, gb, rice_order); \
365 SKIP(re, gb, rice_order); \
372 #define TOSIGNED(x) (((x) >> 1) ^ (-((x) & 1)))
374 #define FIRST_DC_CB 0xB8
376 static const uint8_t dc_codebook[7] = { 0x04, 0x28, 0x28, 0x4D, 0x4D, 0x70, 0x70};
378 static av_always_inline int decode_dc_coeffs(GetBitContext *gb, int16_t *out,
379 int blocks_per_slice)
386 DECODE_CODEWORD(code, FIRST_DC_CB, LAST_SKIP_BITS);
387 prev_dc = TOSIGNED(code);
390 out += 64; // dc coeff for the next block
394 for (i = 1; i < blocks_per_slice; i++, out += 64) {
395 DECODE_CODEWORD(code, dc_codebook[FFMIN(code, 6U)], LAST_SKIP_BITS);
396 if(code) sign ^= -(code & 1);
398 prev_dc += (((code + 1) >> 1) ^ sign) - sign;
401 CLOSE_READER(re, gb);
405 // adaptive codebook switching lut according to previous run/level values
406 static const uint8_t run_to_cb[16] = { 0x06, 0x06, 0x05, 0x05, 0x04, 0x29, 0x29, 0x29, 0x29, 0x28, 0x28, 0x28, 0x28, 0x28, 0x28, 0x4C };
407 static const uint8_t lev_to_cb[10] = { 0x04, 0x0A, 0x05, 0x06, 0x04, 0x28, 0x28, 0x28, 0x28, 0x4C };
409 static av_always_inline int decode_ac_coeffs(AVCodecContext *avctx, GetBitContext *gb,
410 int16_t *out, int blocks_per_slice)
412 ProresContext *ctx = avctx->priv_data;
413 int block_mask, sign;
414 unsigned pos, run, level;
415 int max_coeffs, i, bits_left;
416 int log2_block_count = av_log2(blocks_per_slice);
419 UPDATE_CACHE(re, gb); \
423 max_coeffs = 64 << log2_block_count;
424 block_mask = blocks_per_slice - 1;
426 for (pos = block_mask;;) {
427 bits_left = gb->size_in_bits - re_index;
428 if (!bits_left || (bits_left < 32 && !SHOW_UBITS(re, gb, bits_left)))
431 DECODE_CODEWORD(run, run_to_cb[FFMIN(run, 15)], LAST_SKIP_BITS);
433 if (pos >= max_coeffs) {
434 av_log(avctx, AV_LOG_ERROR, "ac tex damaged %d, %d\n", pos, max_coeffs);
435 return AVERROR_INVALIDDATA;
438 DECODE_CODEWORD(level, lev_to_cb[FFMIN(level, 9)], SKIP_BITS);
441 i = pos >> log2_block_count;
443 sign = SHOW_SBITS(re, gb, 1);
444 SKIP_BITS(re, gb, 1);
445 out[((pos & block_mask) << 6) + ctx->scan[i]] = ((level ^ sign) - sign);
448 CLOSE_READER(re, gb);
452 static int decode_slice_luma(AVCodecContext *avctx, SliceContext *slice,
453 uint16_t *dst, int dst_stride,
454 const uint8_t *buf, unsigned buf_size,
457 ProresContext *ctx = avctx->priv_data;
458 LOCAL_ALIGNED_32(int16_t, blocks, [8*4*64]);
461 int i, blocks_per_slice = slice->mb_count<<2;
464 for (i = 0; i < blocks_per_slice; i++)
465 ctx->bdsp.clear_block(blocks+(i<<6));
467 init_get_bits(&gb, buf, buf_size << 3);
469 if ((ret = decode_dc_coeffs(&gb, blocks, blocks_per_slice)) < 0)
471 if ((ret = decode_ac_coeffs(avctx, &gb, blocks, blocks_per_slice)) < 0)
475 for (i = 0; i < slice->mb_count; i++) {
476 ctx->prodsp.idct_put(dst, dst_stride, block+(0<<6), qmat);
477 ctx->prodsp.idct_put(dst +8, dst_stride, block+(1<<6), qmat);
478 ctx->prodsp.idct_put(dst+4*dst_stride , dst_stride, block+(2<<6), qmat);
479 ctx->prodsp.idct_put(dst+4*dst_stride+8, dst_stride, block+(3<<6), qmat);
486 static int decode_slice_chroma(AVCodecContext *avctx, SliceContext *slice,
487 uint16_t *dst, int dst_stride,
488 const uint8_t *buf, unsigned buf_size,
489 const int16_t *qmat, int log2_blocks_per_mb)
491 ProresContext *ctx = avctx->priv_data;
492 LOCAL_ALIGNED_32(int16_t, blocks, [8*4*64]);
495 int i, j, blocks_per_slice = slice->mb_count << log2_blocks_per_mb;
498 for (i = 0; i < blocks_per_slice; i++)
499 ctx->bdsp.clear_block(blocks+(i<<6));
501 init_get_bits(&gb, buf, buf_size << 3);
503 if ((ret = decode_dc_coeffs(&gb, blocks, blocks_per_slice)) < 0)
505 if ((ret = decode_ac_coeffs(avctx, &gb, blocks, blocks_per_slice)) < 0)
509 for (i = 0; i < slice->mb_count; i++) {
510 for (j = 0; j < log2_blocks_per_mb; j++) {
511 ctx->prodsp.idct_put(dst, dst_stride, block+(0<<6), qmat);
512 ctx->prodsp.idct_put(dst+4*dst_stride, dst_stride, block+(1<<6), qmat);
521 * Decode alpha slice plane.
523 static void decode_slice_alpha(ProresContext *ctx,
524 uint16_t *dst, int dst_stride,
525 const uint8_t *buf, int buf_size,
526 int blocks_per_slice)
530 LOCAL_ALIGNED_32(int16_t, blocks, [8*4*64]);
533 for (i = 0; i < blocks_per_slice<<2; i++)
534 ctx->bdsp.clear_block(blocks+(i<<6));
536 init_get_bits(&gb, buf, buf_size << 3);
538 if (ctx->alpha_info == 2) {
539 ctx->unpack_alpha(&gb, blocks, blocks_per_slice * 4 * 64, 16);
541 ctx->unpack_alpha(&gb, blocks, blocks_per_slice * 4 * 64, 8);
545 for (i = 0; i < 16; i++) {
546 memcpy(dst, block, 16 * blocks_per_slice * sizeof(*dst));
547 dst += dst_stride >> 1;
548 block += 16 * blocks_per_slice;
552 static int decode_slice_thread(AVCodecContext *avctx, void *arg, int jobnr, int threadnr)
554 ProresContext *ctx = avctx->priv_data;
555 SliceContext *slice = &ctx->slices[jobnr];
556 const uint8_t *buf = slice->data;
557 AVFrame *pic = ctx->frame;
558 int i, hdr_size, qscale, log2_chroma_blocks_per_mb;
559 int luma_stride, chroma_stride;
560 int y_data_size, u_data_size, v_data_size, a_data_size;
561 uint8_t *dest_y, *dest_u, *dest_v, *dest_a;
562 LOCAL_ALIGNED_16(int16_t, qmat_luma_scaled, [64]);
563 LOCAL_ALIGNED_16(int16_t, qmat_chroma_scaled,[64]);
568 //av_log(avctx, AV_LOG_INFO, "slice %d mb width %d mb x %d y %d\n",
569 // jobnr, slice->mb_count, slice->mb_x, slice->mb_y);
572 hdr_size = buf[0] >> 3;
573 qscale = av_clip(buf[1], 1, 224);
574 qscale = qscale > 128 ? qscale - 96 << 2: qscale;
575 y_data_size = AV_RB16(buf + 2);
576 u_data_size = AV_RB16(buf + 4);
577 v_data_size = slice->data_size - y_data_size - u_data_size - hdr_size;
578 if (hdr_size > 7) v_data_size = AV_RB16(buf + 6);
579 a_data_size = slice->data_size - y_data_size - u_data_size -
580 v_data_size - hdr_size;
582 if (y_data_size < 0 || u_data_size < 0 || v_data_size < 0
583 || hdr_size+y_data_size+u_data_size+v_data_size > slice->data_size){
584 av_log(avctx, AV_LOG_ERROR, "invalid plane data size\n");
585 return AVERROR_INVALIDDATA;
590 for (i = 0; i < 64; i++) {
591 qmat_luma_scaled [i] = ctx->qmat_luma [i] * qscale;
592 qmat_chroma_scaled[i] = ctx->qmat_chroma[i] * qscale;
595 if (ctx->frame_type == 0) {
596 luma_stride = pic->linesize[0];
597 chroma_stride = pic->linesize[1];
599 luma_stride = pic->linesize[0] << 1;
600 chroma_stride = pic->linesize[1] << 1;
603 if (avctx->pix_fmt == AV_PIX_FMT_YUV444P10 || avctx->pix_fmt == AV_PIX_FMT_YUVA444P10) {
605 log2_chroma_blocks_per_mb = 2;
608 log2_chroma_blocks_per_mb = 1;
611 dest_y = pic->data[0] + (slice->mb_y << 4) * luma_stride + (slice->mb_x << 5);
612 dest_u = pic->data[1] + (slice->mb_y << 4) * chroma_stride + (slice->mb_x << mb_x_shift);
613 dest_v = pic->data[2] + (slice->mb_y << 4) * chroma_stride + (slice->mb_x << mb_x_shift);
614 dest_a = pic->data[3] + (slice->mb_y << 4) * luma_stride + (slice->mb_x << 5);
616 if (ctx->frame_type && ctx->first_field ^ ctx->frame->top_field_first) {
617 dest_y += pic->linesize[0];
618 dest_u += pic->linesize[1];
619 dest_v += pic->linesize[2];
620 dest_a += pic->linesize[3];
623 ret = decode_slice_luma(avctx, slice, (uint16_t*)dest_y, luma_stride,
624 buf, y_data_size, qmat_luma_scaled);
628 if (!(avctx->flags & AV_CODEC_FLAG_GRAY) && (u_data_size + v_data_size) > 0) {
629 ret = decode_slice_chroma(avctx, slice, (uint16_t*)dest_u, chroma_stride,
630 buf + y_data_size, u_data_size,
631 qmat_chroma_scaled, log2_chroma_blocks_per_mb);
635 ret = decode_slice_chroma(avctx, slice, (uint16_t*)dest_v, chroma_stride,
636 buf + y_data_size + u_data_size, v_data_size,
637 qmat_chroma_scaled, log2_chroma_blocks_per_mb);
642 size_t mb_max_x = slice->mb_count << (mb_x_shift - 1);
644 for (i = 0; i < 16; ++i)
645 for (j = 0; j < mb_max_x; ++j) {
646 *(uint16_t*)(dest_u + (i * chroma_stride) + (j << 1)) = 511;
647 *(uint16_t*)(dest_v + (i * chroma_stride) + (j << 1)) = 511;
651 /* decode alpha plane if available */
652 if (ctx->alpha_info && pic->data[3] && a_data_size)
653 decode_slice_alpha(ctx, (uint16_t*)dest_a, luma_stride,
654 buf + y_data_size + u_data_size + v_data_size,
655 a_data_size, slice->mb_count);
661 static int decode_picture(AVCodecContext *avctx)
663 ProresContext *ctx = avctx->priv_data;
667 avctx->execute2(avctx, decode_slice_thread, NULL, NULL, ctx->slice_count);
669 for (i = 0; i < ctx->slice_count; i++)
670 error += ctx->slices[i].ret < 0;
673 ctx->frame->decode_error_flags = FF_DECODE_ERROR_INVALID_BITSTREAM;
674 if (error < ctx->slice_count)
677 return ctx->slices[0].ret;
680 static int decode_frame(AVCodecContext *avctx, void *data, int *got_frame,
683 ProresContext *ctx = avctx->priv_data;
684 ThreadFrame tframe = { .f = data };
685 AVFrame *frame = data;
686 const uint8_t *buf = avpkt->data;
687 int buf_size = avpkt->size;
688 int frame_hdr_size, pic_size, ret;
690 if (buf_size < 28 || AV_RL32(buf + 4) != AV_RL32("icpf")) {
691 av_log(avctx, AV_LOG_ERROR, "invalid frame header\n");
692 return AVERROR_INVALIDDATA;
696 ctx->frame->pict_type = AV_PICTURE_TYPE_I;
697 ctx->frame->key_frame = 1;
698 ctx->first_field = 1;
703 frame_hdr_size = decode_frame_header(ctx, buf, buf_size, avctx);
704 if (frame_hdr_size < 0)
705 return frame_hdr_size;
707 buf += frame_hdr_size;
708 buf_size -= frame_hdr_size;
710 if ((ret = ff_thread_get_buffer(avctx, &tframe, 0)) < 0)
714 pic_size = decode_picture_header(avctx, buf, buf_size);
716 av_log(avctx, AV_LOG_ERROR, "error decoding picture header\n");
720 if ((ret = decode_picture(avctx)) < 0) {
721 av_log(avctx, AV_LOG_ERROR, "error decoding picture\n");
726 buf_size -= pic_size;
728 if (ctx->frame_type && buf_size > 0 && ctx->first_field) {
729 ctx->first_field = 0;
739 static int decode_init_thread_copy(AVCodecContext *avctx)
741 ProresContext *ctx = avctx->priv_data;
749 static av_cold int decode_close(AVCodecContext *avctx)
751 ProresContext *ctx = avctx->priv_data;
753 av_freep(&ctx->slices);
758 AVCodec ff_prores_decoder = {
760 .long_name = NULL_IF_CONFIG_SMALL("ProRes (iCodec Pro)"),
761 .type = AVMEDIA_TYPE_VIDEO,
762 .id = AV_CODEC_ID_PRORES,
763 .priv_data_size = sizeof(ProresContext),
765 .init_thread_copy = ONLY_IF_THREADS_ENABLED(decode_init_thread_copy),
766 .close = decode_close,
767 .decode = decode_frame,
768 .capabilities = AV_CODEC_CAP_DR1 | AV_CODEC_CAP_SLICE_THREADS | AV_CODEC_CAP_FRAME_THREADS,
769 .profiles = NULL_IF_CONFIG_SMALL(ff_prores_profiles),