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 inline unpack_alpha(GetBitContext *gb, uint16_t *dst, int num_coeffs,
50 const int num_bits, const int decode_precision) {
51 const int mask = (1 << num_bits) - 1;
52 int i, idx, val, alpha_val;
59 val = get_bits(gb, num_bits);
62 val = get_bits(gb, num_bits == 16 ? 7 : 4);
68 alpha_val = (alpha_val + val) & mask;
70 dst[idx++] = alpha_val >> 6;
72 dst[idx++] = (alpha_val << 2) | (alpha_val >> 6);
74 if (idx >= num_coeffs)
76 } while (get_bits_left(gb)>0 && get_bits1(gb));
77 val = get_bits(gb, 4);
79 val = get_bits(gb, 11);
80 if (idx + val > num_coeffs)
81 val = num_coeffs - idx;
83 for (i = 0; i < val; i++)
84 dst[idx++] = alpha_val >> 6;
86 for (i = 0; i < val; i++)
87 dst[idx++] = (alpha_val << 2) | (alpha_val >> 6);
89 } while (idx < num_coeffs);
92 static void unpack_alpha_10(GetBitContext *gb, uint16_t *dst, int num_coeffs,
96 unpack_alpha(gb, dst, num_coeffs, 16, 10);
97 } else { /* 8 bits alpha */
98 unpack_alpha(gb, dst, num_coeffs, 8, 10);
102 static av_cold int decode_init(AVCodecContext *avctx)
105 ProresContext *ctx = avctx->priv_data;
106 uint8_t idct_permutation[64];
108 avctx->bits_per_raw_sample = 10;
110 switch (avctx->codec_tag) {
111 case MKTAG('a','p','c','o'):
112 avctx->profile = FF_PROFILE_PRORES_PROXY;
114 case MKTAG('a','p','c','s'):
115 avctx->profile = FF_PROFILE_PRORES_LT;
117 case MKTAG('a','p','c','n'):
118 avctx->profile = FF_PROFILE_PRORES_STANDARD;
120 case MKTAG('a','p','c','h'):
121 avctx->profile = FF_PROFILE_PRORES_HQ;
123 case MKTAG('a','p','4','h'):
124 avctx->profile = FF_PROFILE_PRORES_4444;
126 case MKTAG('a','p','4','x'):
127 avctx->profile = FF_PROFILE_PRORES_XQ;
130 avctx->profile = FF_PROFILE_UNKNOWN;
131 av_log(avctx, AV_LOG_WARNING, "Unknown prores profile %d\n", avctx->codec_tag);
134 ff_blockdsp_init(&ctx->bdsp, avctx);
135 ret = ff_proresdsp_init(&ctx->prodsp, avctx);
137 av_log(avctx, AV_LOG_ERROR, "Fail to init proresdsp for bits per raw sample %d\n", avctx->bits_per_raw_sample);
141 ff_init_scantable_permutation(idct_permutation,
142 ctx->prodsp.idct_permutation_type);
144 permute(ctx->progressive_scan, ff_prores_progressive_scan, idct_permutation);
145 permute(ctx->interlaced_scan, ff_prores_interlaced_scan, idct_permutation);
147 if (avctx->bits_per_raw_sample == 10){
148 ctx->unpack_alpha = unpack_alpha_10;
150 av_log(avctx, AV_LOG_ERROR, "Fail to set unpack_alpha for bits per raw sample %d\n", avctx->bits_per_raw_sample);
156 static int decode_frame_header(ProresContext *ctx, const uint8_t *buf,
157 const int data_size, AVCodecContext *avctx)
159 int hdr_size, width, height, flags;
163 hdr_size = AV_RB16(buf);
164 ff_dlog(avctx, "header size %d\n", hdr_size);
165 if (hdr_size > data_size) {
166 av_log(avctx, AV_LOG_ERROR, "error, wrong header size\n");
167 return AVERROR_INVALIDDATA;
170 version = AV_RB16(buf + 2);
171 ff_dlog(avctx, "%.4s version %d\n", buf+4, version);
173 av_log(avctx, AV_LOG_ERROR, "unsupported version: %d\n", version);
174 return AVERROR_PATCHWELCOME;
177 width = AV_RB16(buf + 8);
178 height = AV_RB16(buf + 10);
179 if (width != avctx->width || height != avctx->height) {
180 av_log(avctx, AV_LOG_ERROR, "picture resolution change: %dx%d -> %dx%d\n",
181 avctx->width, avctx->height, width, height);
182 return AVERROR_PATCHWELCOME;
185 ctx->frame_type = (buf[12] >> 2) & 3;
186 ctx->alpha_info = buf[17] & 0xf;
188 if (ctx->alpha_info > 2) {
189 av_log(avctx, AV_LOG_ERROR, "Invalid alpha mode %d\n", ctx->alpha_info);
190 return AVERROR_INVALIDDATA;
192 if (avctx->skip_alpha) ctx->alpha_info = 0;
194 ff_dlog(avctx, "frame type %d\n", ctx->frame_type);
196 if (ctx->frame_type == 0) {
197 ctx->scan = ctx->progressive_scan; // permuted
199 ctx->scan = ctx->interlaced_scan; // permuted
200 ctx->frame->interlaced_frame = 1;
201 ctx->frame->top_field_first = ctx->frame_type == 1;
204 if (ctx->alpha_info) {
205 avctx->pix_fmt = (buf[12] & 0xC0) == 0xC0 ? AV_PIX_FMT_YUVA444P10 : AV_PIX_FMT_YUVA422P10;
207 avctx->pix_fmt = (buf[12] & 0xC0) == 0xC0 ? AV_PIX_FMT_YUV444P10 : AV_PIX_FMT_YUV422P10;
210 avctx->color_primaries = buf[14];
211 avctx->color_trc = buf[15];
212 avctx->colorspace = buf[16];
213 avctx->color_range = AVCOL_RANGE_MPEG;
217 ff_dlog(avctx, "flags %x\n", flags);
220 if(buf + data_size - ptr < 64) {
221 av_log(avctx, AV_LOG_ERROR, "Header truncated\n");
222 return AVERROR_INVALIDDATA;
224 permute(ctx->qmat_luma, ctx->prodsp.idct_permutation, ptr);
227 memset(ctx->qmat_luma, 4, 64);
231 if(buf + data_size - ptr < 64) {
232 av_log(avctx, AV_LOG_ERROR, "Header truncated\n");
233 return AVERROR_INVALIDDATA;
235 permute(ctx->qmat_chroma, ctx->prodsp.idct_permutation, ptr);
237 memset(ctx->qmat_chroma, 4, 64);
243 static int decode_picture_header(AVCodecContext *avctx, const uint8_t *buf, const int buf_size)
245 ProresContext *ctx = avctx->priv_data;
246 int i, hdr_size, slice_count;
247 unsigned pic_data_size;
248 int log2_slice_mb_width, log2_slice_mb_height;
249 int slice_mb_count, mb_x, mb_y;
250 const uint8_t *data_ptr, *index_ptr;
252 hdr_size = buf[0] >> 3;
253 if (hdr_size < 8 || hdr_size > buf_size) {
254 av_log(avctx, AV_LOG_ERROR, "error, wrong picture header size\n");
255 return AVERROR_INVALIDDATA;
258 pic_data_size = AV_RB32(buf + 1);
259 if (pic_data_size > buf_size) {
260 av_log(avctx, AV_LOG_ERROR, "error, wrong picture data size\n");
261 return AVERROR_INVALIDDATA;
264 log2_slice_mb_width = buf[7] >> 4;
265 log2_slice_mb_height = buf[7] & 0xF;
266 if (log2_slice_mb_width > 3 || log2_slice_mb_height) {
267 av_log(avctx, AV_LOG_ERROR, "unsupported slice resolution: %dx%d\n",
268 1 << log2_slice_mb_width, 1 << log2_slice_mb_height);
269 return AVERROR_INVALIDDATA;
272 ctx->mb_width = (avctx->width + 15) >> 4;
274 ctx->mb_height = (avctx->height + 31) >> 5;
276 ctx->mb_height = (avctx->height + 15) >> 4;
278 // QT ignores the written value
279 // slice_count = AV_RB16(buf + 5);
280 slice_count = ctx->mb_height * ((ctx->mb_width >> log2_slice_mb_width) +
281 av_popcount(ctx->mb_width & (1 << log2_slice_mb_width) - 1));
283 if (ctx->slice_count != slice_count || !ctx->slices) {
284 av_freep(&ctx->slices);
285 ctx->slice_count = 0;
286 ctx->slices = av_mallocz_array(slice_count, sizeof(*ctx->slices));
288 return AVERROR(ENOMEM);
289 ctx->slice_count = slice_count;
293 return AVERROR(EINVAL);
295 if (hdr_size + slice_count*2 > buf_size) {
296 av_log(avctx, AV_LOG_ERROR, "error, wrong slice count\n");
297 return AVERROR_INVALIDDATA;
300 // parse slice information
301 index_ptr = buf + hdr_size;
302 data_ptr = index_ptr + slice_count*2;
304 slice_mb_count = 1 << log2_slice_mb_width;
308 for (i = 0; i < slice_count; i++) {
309 SliceContext *slice = &ctx->slices[i];
311 slice->data = data_ptr;
312 data_ptr += AV_RB16(index_ptr + i*2);
314 while (ctx->mb_width - mb_x < slice_mb_count)
315 slice_mb_count >>= 1;
319 slice->mb_count = slice_mb_count;
320 slice->data_size = data_ptr - slice->data;
322 if (slice->data_size < 6) {
323 av_log(avctx, AV_LOG_ERROR, "error, wrong slice data size\n");
324 return AVERROR_INVALIDDATA;
327 mb_x += slice_mb_count;
328 if (mb_x == ctx->mb_width) {
329 slice_mb_count = 1 << log2_slice_mb_width;
333 if (data_ptr > buf + buf_size) {
334 av_log(avctx, AV_LOG_ERROR, "error, slice out of bounds\n");
335 return AVERROR_INVALIDDATA;
339 if (mb_x || mb_y != ctx->mb_height) {
340 av_log(avctx, AV_LOG_ERROR, "error wrong mb count y %d h %d\n",
341 mb_y, ctx->mb_height);
342 return AVERROR_INVALIDDATA;
345 return pic_data_size;
348 #define DECODE_CODEWORD(val, codebook, SKIP) \
350 unsigned int rice_order, exp_order, switch_bits; \
351 unsigned int q, buf, bits; \
353 UPDATE_CACHE(re, gb); \
354 buf = GET_CACHE(re, gb); \
356 /* number of bits to switch between rice and exp golomb */ \
357 switch_bits = codebook & 3; \
358 rice_order = codebook >> 5; \
359 exp_order = (codebook >> 2) & 7; \
361 q = 31 - av_log2(buf); \
363 if (q > switch_bits) { /* exp golomb */ \
364 bits = exp_order - switch_bits + (q<<1); \
365 if (bits > FFMIN(MIN_CACHE_BITS, 31)) \
366 return AVERROR_INVALIDDATA; \
367 val = SHOW_UBITS(re, gb, bits) - (1 << exp_order) + \
368 ((switch_bits + 1) << rice_order); \
369 SKIP(re, gb, bits); \
370 } else if (rice_order) { \
371 SKIP_BITS(re, gb, q+1); \
372 val = (q << rice_order) + SHOW_UBITS(re, gb, rice_order); \
373 SKIP(re, gb, rice_order); \
380 #define TOSIGNED(x) (((x) >> 1) ^ (-((x) & 1)))
382 #define FIRST_DC_CB 0xB8
384 static const uint8_t dc_codebook[7] = { 0x04, 0x28, 0x28, 0x4D, 0x4D, 0x70, 0x70};
386 static av_always_inline int decode_dc_coeffs(GetBitContext *gb, int16_t *out,
387 int blocks_per_slice)
394 DECODE_CODEWORD(code, FIRST_DC_CB, LAST_SKIP_BITS);
395 prev_dc = TOSIGNED(code);
398 out += 64; // dc coeff for the next block
402 for (i = 1; i < blocks_per_slice; i++, out += 64) {
403 DECODE_CODEWORD(code, dc_codebook[FFMIN(code, 6U)], LAST_SKIP_BITS);
404 if(code) sign ^= -(code & 1);
406 prev_dc += (((code + 1) >> 1) ^ sign) - sign;
409 CLOSE_READER(re, gb);
413 // adaptive codebook switching lut according to previous run/level values
414 static const uint8_t run_to_cb[16] = { 0x06, 0x06, 0x05, 0x05, 0x04, 0x29, 0x29, 0x29, 0x29, 0x28, 0x28, 0x28, 0x28, 0x28, 0x28, 0x4C };
415 static const uint8_t lev_to_cb[10] = { 0x04, 0x0A, 0x05, 0x06, 0x04, 0x28, 0x28, 0x28, 0x28, 0x4C };
417 static av_always_inline int decode_ac_coeffs(AVCodecContext *avctx, GetBitContext *gb,
418 int16_t *out, int blocks_per_slice)
420 ProresContext *ctx = avctx->priv_data;
421 int block_mask, sign;
422 unsigned pos, run, level;
423 int max_coeffs, i, bits_left;
424 int log2_block_count = av_log2(blocks_per_slice);
427 UPDATE_CACHE(re, gb); \
431 max_coeffs = 64 << log2_block_count;
432 block_mask = blocks_per_slice - 1;
434 for (pos = block_mask;;) {
435 bits_left = gb->size_in_bits - re_index;
436 if (!bits_left || (bits_left < 32 && !SHOW_UBITS(re, gb, bits_left)))
439 DECODE_CODEWORD(run, run_to_cb[FFMIN(run, 15)], LAST_SKIP_BITS);
441 if (pos >= max_coeffs) {
442 av_log(avctx, AV_LOG_ERROR, "ac tex damaged %d, %d\n", pos, max_coeffs);
443 return AVERROR_INVALIDDATA;
446 DECODE_CODEWORD(level, lev_to_cb[FFMIN(level, 9)], SKIP_BITS);
449 i = pos >> log2_block_count;
451 sign = SHOW_SBITS(re, gb, 1);
452 SKIP_BITS(re, gb, 1);
453 out[((pos & block_mask) << 6) + ctx->scan[i]] = ((level ^ sign) - sign);
456 CLOSE_READER(re, gb);
460 static int decode_slice_luma(AVCodecContext *avctx, SliceContext *slice,
461 uint16_t *dst, int dst_stride,
462 const uint8_t *buf, unsigned buf_size,
465 ProresContext *ctx = avctx->priv_data;
466 LOCAL_ALIGNED_32(int16_t, blocks, [8*4*64]);
469 int i, blocks_per_slice = slice->mb_count<<2;
472 for (i = 0; i < blocks_per_slice; i++)
473 ctx->bdsp.clear_block(blocks+(i<<6));
475 init_get_bits(&gb, buf, buf_size << 3);
477 if ((ret = decode_dc_coeffs(&gb, blocks, blocks_per_slice)) < 0)
479 if ((ret = decode_ac_coeffs(avctx, &gb, blocks, blocks_per_slice)) < 0)
483 for (i = 0; i < slice->mb_count; i++) {
484 ctx->prodsp.idct_put(dst, dst_stride, block+(0<<6), qmat);
485 ctx->prodsp.idct_put(dst +8, dst_stride, block+(1<<6), qmat);
486 ctx->prodsp.idct_put(dst+4*dst_stride , dst_stride, block+(2<<6), qmat);
487 ctx->prodsp.idct_put(dst+4*dst_stride+8, dst_stride, block+(3<<6), qmat);
494 static int decode_slice_chroma(AVCodecContext *avctx, SliceContext *slice,
495 uint16_t *dst, int dst_stride,
496 const uint8_t *buf, unsigned buf_size,
497 const int16_t *qmat, int log2_blocks_per_mb)
499 ProresContext *ctx = avctx->priv_data;
500 LOCAL_ALIGNED_32(int16_t, blocks, [8*4*64]);
503 int i, j, blocks_per_slice = slice->mb_count << log2_blocks_per_mb;
506 for (i = 0; i < blocks_per_slice; i++)
507 ctx->bdsp.clear_block(blocks+(i<<6));
509 init_get_bits(&gb, buf, buf_size << 3);
511 if ((ret = decode_dc_coeffs(&gb, blocks, blocks_per_slice)) < 0)
513 if ((ret = decode_ac_coeffs(avctx, &gb, blocks, blocks_per_slice)) < 0)
517 for (i = 0; i < slice->mb_count; i++) {
518 for (j = 0; j < log2_blocks_per_mb; j++) {
519 ctx->prodsp.idct_put(dst, dst_stride, block+(0<<6), qmat);
520 ctx->prodsp.idct_put(dst+4*dst_stride, dst_stride, block+(1<<6), qmat);
529 * Decode alpha slice plane.
531 static void decode_slice_alpha(ProresContext *ctx,
532 uint16_t *dst, int dst_stride,
533 const uint8_t *buf, int buf_size,
534 int blocks_per_slice)
538 LOCAL_ALIGNED_32(int16_t, blocks, [8*4*64]);
541 for (i = 0; i < blocks_per_slice<<2; i++)
542 ctx->bdsp.clear_block(blocks+(i<<6));
544 init_get_bits(&gb, buf, buf_size << 3);
546 if (ctx->alpha_info == 2) {
547 ctx->unpack_alpha(&gb, blocks, blocks_per_slice * 4 * 64, 16);
549 ctx->unpack_alpha(&gb, blocks, blocks_per_slice * 4 * 64, 8);
553 for (i = 0; i < 16; i++) {
554 memcpy(dst, block, 16 * blocks_per_slice * sizeof(*dst));
555 dst += dst_stride >> 1;
556 block += 16 * blocks_per_slice;
560 static int decode_slice_thread(AVCodecContext *avctx, void *arg, int jobnr, int threadnr)
562 ProresContext *ctx = avctx->priv_data;
563 SliceContext *slice = &ctx->slices[jobnr];
564 const uint8_t *buf = slice->data;
565 AVFrame *pic = ctx->frame;
566 int i, hdr_size, qscale, log2_chroma_blocks_per_mb;
567 int luma_stride, chroma_stride;
568 int y_data_size, u_data_size, v_data_size, a_data_size;
569 uint8_t *dest_y, *dest_u, *dest_v, *dest_a;
570 LOCAL_ALIGNED_16(int16_t, qmat_luma_scaled, [64]);
571 LOCAL_ALIGNED_16(int16_t, qmat_chroma_scaled,[64]);
576 //av_log(avctx, AV_LOG_INFO, "slice %d mb width %d mb x %d y %d\n",
577 // jobnr, slice->mb_count, slice->mb_x, slice->mb_y);
580 hdr_size = buf[0] >> 3;
581 qscale = av_clip(buf[1], 1, 224);
582 qscale = qscale > 128 ? qscale - 96 << 2: qscale;
583 y_data_size = AV_RB16(buf + 2);
584 u_data_size = AV_RB16(buf + 4);
585 v_data_size = slice->data_size - y_data_size - u_data_size - hdr_size;
586 if (hdr_size > 7) v_data_size = AV_RB16(buf + 6);
587 a_data_size = slice->data_size - y_data_size - u_data_size -
588 v_data_size - hdr_size;
590 if (y_data_size < 0 || u_data_size < 0 || v_data_size < 0
591 || hdr_size+y_data_size+u_data_size+v_data_size > slice->data_size){
592 av_log(avctx, AV_LOG_ERROR, "invalid plane data size\n");
593 return AVERROR_INVALIDDATA;
598 for (i = 0; i < 64; i++) {
599 qmat_luma_scaled [i] = ctx->qmat_luma [i] * qscale;
600 qmat_chroma_scaled[i] = ctx->qmat_chroma[i] * qscale;
603 if (ctx->frame_type == 0) {
604 luma_stride = pic->linesize[0];
605 chroma_stride = pic->linesize[1];
607 luma_stride = pic->linesize[0] << 1;
608 chroma_stride = pic->linesize[1] << 1;
611 if (avctx->pix_fmt == AV_PIX_FMT_YUV444P10 || avctx->pix_fmt == AV_PIX_FMT_YUVA444P10) {
613 log2_chroma_blocks_per_mb = 2;
616 log2_chroma_blocks_per_mb = 1;
619 dest_y = pic->data[0] + (slice->mb_y << 4) * luma_stride + (slice->mb_x << 5);
620 dest_u = pic->data[1] + (slice->mb_y << 4) * chroma_stride + (slice->mb_x << mb_x_shift);
621 dest_v = pic->data[2] + (slice->mb_y << 4) * chroma_stride + (slice->mb_x << mb_x_shift);
622 dest_a = pic->data[3] + (slice->mb_y << 4) * luma_stride + (slice->mb_x << 5);
624 if (ctx->frame_type && ctx->first_field ^ ctx->frame->top_field_first) {
625 dest_y += pic->linesize[0];
626 dest_u += pic->linesize[1];
627 dest_v += pic->linesize[2];
628 dest_a += pic->linesize[3];
631 ret = decode_slice_luma(avctx, slice, (uint16_t*)dest_y, luma_stride,
632 buf, y_data_size, qmat_luma_scaled);
636 if (!(avctx->flags & AV_CODEC_FLAG_GRAY) && (u_data_size + v_data_size) > 0) {
637 ret = decode_slice_chroma(avctx, slice, (uint16_t*)dest_u, chroma_stride,
638 buf + y_data_size, u_data_size,
639 qmat_chroma_scaled, log2_chroma_blocks_per_mb);
643 ret = decode_slice_chroma(avctx, slice, (uint16_t*)dest_v, chroma_stride,
644 buf + y_data_size + u_data_size, v_data_size,
645 qmat_chroma_scaled, log2_chroma_blocks_per_mb);
650 size_t mb_max_x = slice->mb_count << (mb_x_shift - 1);
652 for (i = 0; i < 16; ++i)
653 for (j = 0; j < mb_max_x; ++j) {
654 *(uint16_t*)(dest_u + (i * chroma_stride) + (j << 1)) = 511;
655 *(uint16_t*)(dest_v + (i * chroma_stride) + (j << 1)) = 511;
659 /* decode alpha plane if available */
660 if (ctx->alpha_info && pic->data[3] && a_data_size)
661 decode_slice_alpha(ctx, (uint16_t*)dest_a, luma_stride,
662 buf + y_data_size + u_data_size + v_data_size,
663 a_data_size, slice->mb_count);
669 static int decode_picture(AVCodecContext *avctx)
671 ProresContext *ctx = avctx->priv_data;
675 avctx->execute2(avctx, decode_slice_thread, NULL, NULL, ctx->slice_count);
677 for (i = 0; i < ctx->slice_count; i++)
678 error += ctx->slices[i].ret < 0;
681 ctx->frame->decode_error_flags = FF_DECODE_ERROR_INVALID_BITSTREAM;
682 if (error < ctx->slice_count)
685 return ctx->slices[0].ret;
688 static int decode_frame(AVCodecContext *avctx, void *data, int *got_frame,
691 ProresContext *ctx = avctx->priv_data;
692 ThreadFrame tframe = { .f = data };
693 AVFrame *frame = data;
694 const uint8_t *buf = avpkt->data;
695 int buf_size = avpkt->size;
696 int frame_hdr_size, pic_size, ret;
698 if (buf_size < 28 || AV_RL32(buf + 4) != AV_RL32("icpf")) {
699 av_log(avctx, AV_LOG_ERROR, "invalid frame header\n");
700 return AVERROR_INVALIDDATA;
704 ctx->frame->pict_type = AV_PICTURE_TYPE_I;
705 ctx->frame->key_frame = 1;
706 ctx->first_field = 1;
711 frame_hdr_size = decode_frame_header(ctx, buf, buf_size, avctx);
712 if (frame_hdr_size < 0)
713 return frame_hdr_size;
715 buf += frame_hdr_size;
716 buf_size -= frame_hdr_size;
718 if ((ret = ff_thread_get_buffer(avctx, &tframe, 0)) < 0)
722 pic_size = decode_picture_header(avctx, buf, buf_size);
724 av_log(avctx, AV_LOG_ERROR, "error decoding picture header\n");
728 if ((ret = decode_picture(avctx)) < 0) {
729 av_log(avctx, AV_LOG_ERROR, "error decoding picture\n");
734 buf_size -= pic_size;
736 if (ctx->frame_type && buf_size > 0 && ctx->first_field) {
737 ctx->first_field = 0;
747 static int decode_init_thread_copy(AVCodecContext *avctx)
749 ProresContext *ctx = avctx->priv_data;
757 static av_cold int decode_close(AVCodecContext *avctx)
759 ProresContext *ctx = avctx->priv_data;
761 av_freep(&ctx->slices);
766 AVCodec ff_prores_decoder = {
768 .long_name = NULL_IF_CONFIG_SMALL("ProRes (iCodec Pro)"),
769 .type = AVMEDIA_TYPE_VIDEO,
770 .id = AV_CODEC_ID_PRORES,
771 .priv_data_size = sizeof(ProresContext),
773 .init_thread_copy = ONLY_IF_THREADS_ENABLED(decode_init_thread_copy),
774 .close = decode_close,
775 .decode = decode_frame,
776 .capabilities = AV_CODEC_CAP_DR1 | AV_CODEC_CAP_SLICE_THREADS | AV_CODEC_CAP_FRAME_THREADS,
777 .profiles = NULL_IF_CONFIG_SMALL(ff_prores_profiles),