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 av_cold int decode_init(AVCodecContext *avctx)
51 ProresContext *ctx = avctx->priv_data;
52 uint8_t idct_permutation[64];
54 avctx->bits_per_raw_sample = 10;
56 switch (avctx->codec_tag) {
57 case MKTAG('a','p','c','o'):
58 avctx->profile = FF_PROFILE_PRORES_PROXY;
60 case MKTAG('a','p','c','s'):
61 avctx->profile = FF_PROFILE_PRORES_LT;
63 case MKTAG('a','p','c','n'):
64 avctx->profile = FF_PROFILE_PRORES_STANDARD;
66 case MKTAG('a','p','c','h'):
67 avctx->profile = FF_PROFILE_PRORES_HQ;
69 case MKTAG('a','p','4','h'):
70 avctx->profile = FF_PROFILE_PRORES_4444;
72 case MKTAG('a','p','4','x'):
73 avctx->profile = FF_PROFILE_PRORES_XQ;
76 avctx->profile = FF_PROFILE_UNKNOWN;
77 av_log(avctx, AV_LOG_WARNING, "Unknown prores profile %d\n", avctx->codec_tag);
80 ff_blockdsp_init(&ctx->bdsp, avctx);
81 ff_proresdsp_init(&ctx->prodsp, avctx);
83 ff_init_scantable_permutation(idct_permutation,
84 ctx->prodsp.idct_permutation_type);
86 permute(ctx->progressive_scan, ff_prores_progressive_scan, idct_permutation);
87 permute(ctx->interlaced_scan, ff_prores_interlaced_scan, idct_permutation);
92 static int decode_frame_header(ProresContext *ctx, const uint8_t *buf,
93 const int data_size, AVCodecContext *avctx)
95 int hdr_size, width, height, flags;
99 hdr_size = AV_RB16(buf);
100 ff_dlog(avctx, "header size %d\n", hdr_size);
101 if (hdr_size > data_size) {
102 av_log(avctx, AV_LOG_ERROR, "error, wrong header size\n");
103 return AVERROR_INVALIDDATA;
106 version = AV_RB16(buf + 2);
107 ff_dlog(avctx, "%.4s version %d\n", buf+4, version);
109 av_log(avctx, AV_LOG_ERROR, "unsupported version: %d\n", version);
110 return AVERROR_PATCHWELCOME;
113 width = AV_RB16(buf + 8);
114 height = AV_RB16(buf + 10);
115 if (width != avctx->width || height != avctx->height) {
116 av_log(avctx, AV_LOG_ERROR, "picture resolution change: %dx%d -> %dx%d\n",
117 avctx->width, avctx->height, width, height);
118 return AVERROR_PATCHWELCOME;
121 ctx->frame_type = (buf[12] >> 2) & 3;
122 ctx->alpha_info = buf[17] & 0xf;
124 if (ctx->alpha_info > 2) {
125 av_log(avctx, AV_LOG_ERROR, "Invalid alpha mode %d\n", ctx->alpha_info);
126 return AVERROR_INVALIDDATA;
128 if (avctx->skip_alpha) ctx->alpha_info = 0;
130 ff_dlog(avctx, "frame type %d\n", ctx->frame_type);
132 if (ctx->frame_type == 0) {
133 ctx->scan = ctx->progressive_scan; // permuted
135 ctx->scan = ctx->interlaced_scan; // permuted
136 ctx->frame->interlaced_frame = 1;
137 ctx->frame->top_field_first = ctx->frame_type == 1;
140 if (ctx->alpha_info) {
141 avctx->pix_fmt = (buf[12] & 0xC0) == 0xC0 ? AV_PIX_FMT_YUVA444P10 : AV_PIX_FMT_YUVA422P10;
143 avctx->pix_fmt = (buf[12] & 0xC0) == 0xC0 ? AV_PIX_FMT_YUV444P10 : AV_PIX_FMT_YUV422P10;
146 avctx->color_primaries = buf[14];
147 avctx->color_trc = buf[15];
148 avctx->colorspace = buf[16];
149 avctx->color_range = AVCOL_RANGE_MPEG;
153 ff_dlog(avctx, "flags %x\n", flags);
156 if(buf + data_size - ptr < 64) {
157 av_log(avctx, AV_LOG_ERROR, "Header truncated\n");
158 return AVERROR_INVALIDDATA;
160 permute(ctx->qmat_luma, ctx->prodsp.idct_permutation, ptr);
163 memset(ctx->qmat_luma, 4, 64);
167 if(buf + data_size - ptr < 64) {
168 av_log(avctx, AV_LOG_ERROR, "Header truncated\n");
169 return AVERROR_INVALIDDATA;
171 permute(ctx->qmat_chroma, ctx->prodsp.idct_permutation, ptr);
173 memset(ctx->qmat_chroma, 4, 64);
179 static int decode_picture_header(AVCodecContext *avctx, const uint8_t *buf, const int buf_size)
181 ProresContext *ctx = avctx->priv_data;
182 int i, hdr_size, slice_count;
183 unsigned pic_data_size;
184 int log2_slice_mb_width, log2_slice_mb_height;
185 int slice_mb_count, mb_x, mb_y;
186 const uint8_t *data_ptr, *index_ptr;
188 hdr_size = buf[0] >> 3;
189 if (hdr_size < 8 || hdr_size > buf_size) {
190 av_log(avctx, AV_LOG_ERROR, "error, wrong picture header size\n");
191 return AVERROR_INVALIDDATA;
194 pic_data_size = AV_RB32(buf + 1);
195 if (pic_data_size > buf_size) {
196 av_log(avctx, AV_LOG_ERROR, "error, wrong picture data size\n");
197 return AVERROR_INVALIDDATA;
200 log2_slice_mb_width = buf[7] >> 4;
201 log2_slice_mb_height = buf[7] & 0xF;
202 if (log2_slice_mb_width > 3 || log2_slice_mb_height) {
203 av_log(avctx, AV_LOG_ERROR, "unsupported slice resolution: %dx%d\n",
204 1 << log2_slice_mb_width, 1 << log2_slice_mb_height);
205 return AVERROR_INVALIDDATA;
208 ctx->mb_width = (avctx->width + 15) >> 4;
210 ctx->mb_height = (avctx->height + 31) >> 5;
212 ctx->mb_height = (avctx->height + 15) >> 4;
214 // QT ignores the written value
215 // slice_count = AV_RB16(buf + 5);
216 slice_count = ctx->mb_height * ((ctx->mb_width >> log2_slice_mb_width) +
217 av_popcount(ctx->mb_width & (1 << log2_slice_mb_width) - 1));
219 if (ctx->slice_count != slice_count || !ctx->slices) {
220 av_freep(&ctx->slices);
221 ctx->slice_count = 0;
222 ctx->slices = av_mallocz_array(slice_count, sizeof(*ctx->slices));
224 return AVERROR(ENOMEM);
225 ctx->slice_count = slice_count;
229 return AVERROR(EINVAL);
231 if (hdr_size + slice_count*2 > buf_size) {
232 av_log(avctx, AV_LOG_ERROR, "error, wrong slice count\n");
233 return AVERROR_INVALIDDATA;
236 // parse slice information
237 index_ptr = buf + hdr_size;
238 data_ptr = index_ptr + slice_count*2;
240 slice_mb_count = 1 << log2_slice_mb_width;
244 for (i = 0; i < slice_count; i++) {
245 SliceContext *slice = &ctx->slices[i];
247 slice->data = data_ptr;
248 data_ptr += AV_RB16(index_ptr + i*2);
250 while (ctx->mb_width - mb_x < slice_mb_count)
251 slice_mb_count >>= 1;
255 slice->mb_count = slice_mb_count;
256 slice->data_size = data_ptr - slice->data;
258 if (slice->data_size < 6) {
259 av_log(avctx, AV_LOG_ERROR, "error, wrong slice data size\n");
260 return AVERROR_INVALIDDATA;
263 mb_x += slice_mb_count;
264 if (mb_x == ctx->mb_width) {
265 slice_mb_count = 1 << log2_slice_mb_width;
269 if (data_ptr > buf + buf_size) {
270 av_log(avctx, AV_LOG_ERROR, "error, slice out of bounds\n");
271 return AVERROR_INVALIDDATA;
275 if (mb_x || mb_y != ctx->mb_height) {
276 av_log(avctx, AV_LOG_ERROR, "error wrong mb count y %d h %d\n",
277 mb_y, ctx->mb_height);
278 return AVERROR_INVALIDDATA;
281 return pic_data_size;
284 #define DECODE_CODEWORD(val, codebook, SKIP) \
286 unsigned int rice_order, exp_order, switch_bits; \
287 unsigned int q, buf, bits; \
289 UPDATE_CACHE(re, gb); \
290 buf = GET_CACHE(re, gb); \
292 /* number of bits to switch between rice and exp golomb */ \
293 switch_bits = codebook & 3; \
294 rice_order = codebook >> 5; \
295 exp_order = (codebook >> 2) & 7; \
297 q = 31 - av_log2(buf); \
299 if (q > switch_bits) { /* exp golomb */ \
300 bits = exp_order - switch_bits + (q<<1); \
301 if (bits > FFMIN(MIN_CACHE_BITS, 31)) \
302 return AVERROR_INVALIDDATA; \
303 val = SHOW_UBITS(re, gb, bits) - (1 << exp_order) + \
304 ((switch_bits + 1) << rice_order); \
305 SKIP(re, gb, bits); \
306 } else if (rice_order) { \
307 SKIP_BITS(re, gb, q+1); \
308 val = (q << rice_order) + SHOW_UBITS(re, gb, rice_order); \
309 SKIP(re, gb, rice_order); \
316 #define TOSIGNED(x) (((x) >> 1) ^ (-((x) & 1)))
318 #define FIRST_DC_CB 0xB8
320 static const uint8_t dc_codebook[7] = { 0x04, 0x28, 0x28, 0x4D, 0x4D, 0x70, 0x70};
322 static av_always_inline int decode_dc_coeffs(GetBitContext *gb, int16_t *out,
323 int blocks_per_slice)
330 DECODE_CODEWORD(code, FIRST_DC_CB, LAST_SKIP_BITS);
331 prev_dc = TOSIGNED(code);
334 out += 64; // dc coeff for the next block
338 for (i = 1; i < blocks_per_slice; i++, out += 64) {
339 DECODE_CODEWORD(code, dc_codebook[FFMIN(code, 6U)], LAST_SKIP_BITS);
340 if(code) sign ^= -(code & 1);
342 prev_dc += (((code + 1) >> 1) ^ sign) - sign;
345 CLOSE_READER(re, gb);
349 // adaptive codebook switching lut according to previous run/level values
350 static const uint8_t run_to_cb[16] = { 0x06, 0x06, 0x05, 0x05, 0x04, 0x29, 0x29, 0x29, 0x29, 0x28, 0x28, 0x28, 0x28, 0x28, 0x28, 0x4C };
351 static const uint8_t lev_to_cb[10] = { 0x04, 0x0A, 0x05, 0x06, 0x04, 0x28, 0x28, 0x28, 0x28, 0x4C };
353 static av_always_inline int decode_ac_coeffs(AVCodecContext *avctx, GetBitContext *gb,
354 int16_t *out, int blocks_per_slice)
356 ProresContext *ctx = avctx->priv_data;
357 int block_mask, sign;
358 unsigned pos, run, level;
359 int max_coeffs, i, bits_left;
360 int log2_block_count = av_log2(blocks_per_slice);
363 UPDATE_CACHE(re, gb); \
367 max_coeffs = 64 << log2_block_count;
368 block_mask = blocks_per_slice - 1;
370 for (pos = block_mask;;) {
371 bits_left = gb->size_in_bits - re_index;
372 if (!bits_left || (bits_left < 32 && !SHOW_UBITS(re, gb, bits_left)))
375 DECODE_CODEWORD(run, run_to_cb[FFMIN(run, 15)], LAST_SKIP_BITS);
377 if (pos >= max_coeffs) {
378 av_log(avctx, AV_LOG_ERROR, "ac tex damaged %d, %d\n", pos, max_coeffs);
379 return AVERROR_INVALIDDATA;
382 DECODE_CODEWORD(level, lev_to_cb[FFMIN(level, 9)], SKIP_BITS);
385 i = pos >> log2_block_count;
387 sign = SHOW_SBITS(re, gb, 1);
388 SKIP_BITS(re, gb, 1);
389 out[((pos & block_mask) << 6) + ctx->scan[i]] = ((level ^ sign) - sign);
392 CLOSE_READER(re, gb);
396 static int decode_slice_luma(AVCodecContext *avctx, SliceContext *slice,
397 uint16_t *dst, int dst_stride,
398 const uint8_t *buf, unsigned buf_size,
401 ProresContext *ctx = avctx->priv_data;
402 LOCAL_ALIGNED_32(int16_t, blocks, [8*4*64]);
405 int i, blocks_per_slice = slice->mb_count<<2;
408 for (i = 0; i < blocks_per_slice; i++)
409 ctx->bdsp.clear_block(blocks+(i<<6));
411 init_get_bits(&gb, buf, buf_size << 3);
413 if ((ret = decode_dc_coeffs(&gb, blocks, blocks_per_slice)) < 0)
415 if ((ret = decode_ac_coeffs(avctx, &gb, blocks, blocks_per_slice)) < 0)
419 for (i = 0; i < slice->mb_count; i++) {
420 ctx->prodsp.idct_put(dst, dst_stride, block+(0<<6), qmat);
421 ctx->prodsp.idct_put(dst +8, dst_stride, block+(1<<6), qmat);
422 ctx->prodsp.idct_put(dst+4*dst_stride , dst_stride, block+(2<<6), qmat);
423 ctx->prodsp.idct_put(dst+4*dst_stride+8, dst_stride, block+(3<<6), qmat);
430 static int decode_slice_chroma(AVCodecContext *avctx, SliceContext *slice,
431 uint16_t *dst, int dst_stride,
432 const uint8_t *buf, unsigned buf_size,
433 const int16_t *qmat, int log2_blocks_per_mb)
435 ProresContext *ctx = avctx->priv_data;
436 LOCAL_ALIGNED_32(int16_t, blocks, [8*4*64]);
439 int i, j, blocks_per_slice = slice->mb_count << log2_blocks_per_mb;
442 for (i = 0; i < blocks_per_slice; i++)
443 ctx->bdsp.clear_block(blocks+(i<<6));
445 init_get_bits(&gb, buf, buf_size << 3);
447 if ((ret = decode_dc_coeffs(&gb, blocks, blocks_per_slice)) < 0)
449 if ((ret = decode_ac_coeffs(avctx, &gb, blocks, blocks_per_slice)) < 0)
453 for (i = 0; i < slice->mb_count; i++) {
454 for (j = 0; j < log2_blocks_per_mb; j++) {
455 ctx->prodsp.idct_put(dst, dst_stride, block+(0<<6), qmat);
456 ctx->prodsp.idct_put(dst+4*dst_stride, dst_stride, block+(1<<6), qmat);
464 static void unpack_alpha(GetBitContext *gb, uint16_t *dst, int num_coeffs,
467 const int mask = (1 << num_bits) - 1;
468 int i, idx, val, alpha_val;
475 val = get_bits(gb, num_bits);
478 val = get_bits(gb, num_bits == 16 ? 7 : 4);
480 val = (val + 2) >> 1;
484 alpha_val = (alpha_val + val) & mask;
485 if (num_bits == 16) {
486 dst[idx++] = alpha_val >> 6;
488 dst[idx++] = (alpha_val << 2) | (alpha_val >> 6);
490 if (idx >= num_coeffs)
492 } while (get_bits_left(gb)>0 && get_bits1(gb));
493 val = get_bits(gb, 4);
495 val = get_bits(gb, 11);
496 if (idx + val > num_coeffs)
497 val = num_coeffs - idx;
498 if (num_bits == 16) {
499 for (i = 0; i < val; i++)
500 dst[idx++] = alpha_val >> 6;
502 for (i = 0; i < val; i++)
503 dst[idx++] = (alpha_val << 2) | (alpha_val >> 6);
506 } while (idx < num_coeffs);
510 * Decode alpha slice plane.
512 static void decode_slice_alpha(ProresContext *ctx,
513 uint16_t *dst, int dst_stride,
514 const uint8_t *buf, int buf_size,
515 int blocks_per_slice)
519 LOCAL_ALIGNED_32(int16_t, blocks, [8*4*64]);
522 for (i = 0; i < blocks_per_slice<<2; i++)
523 ctx->bdsp.clear_block(blocks+(i<<6));
525 init_get_bits(&gb, buf, buf_size << 3);
527 if (ctx->alpha_info == 2) {
528 unpack_alpha(&gb, blocks, blocks_per_slice * 4 * 64, 16);
530 unpack_alpha(&gb, blocks, blocks_per_slice * 4 * 64, 8);
534 for (i = 0; i < 16; i++) {
535 memcpy(dst, block, 16 * blocks_per_slice * sizeof(*dst));
536 dst += dst_stride >> 1;
537 block += 16 * blocks_per_slice;
541 static int decode_slice_thread(AVCodecContext *avctx, void *arg, int jobnr, int threadnr)
543 ProresContext *ctx = avctx->priv_data;
544 SliceContext *slice = &ctx->slices[jobnr];
545 const uint8_t *buf = slice->data;
546 AVFrame *pic = ctx->frame;
547 int i, hdr_size, qscale, log2_chroma_blocks_per_mb;
548 int luma_stride, chroma_stride;
549 int y_data_size, u_data_size, v_data_size, a_data_size;
550 uint8_t *dest_y, *dest_u, *dest_v, *dest_a;
551 LOCAL_ALIGNED_16(int16_t, qmat_luma_scaled, [64]);
552 LOCAL_ALIGNED_16(int16_t, qmat_chroma_scaled,[64]);
557 //av_log(avctx, AV_LOG_INFO, "slice %d mb width %d mb x %d y %d\n",
558 // jobnr, slice->mb_count, slice->mb_x, slice->mb_y);
561 hdr_size = buf[0] >> 3;
562 qscale = av_clip(buf[1], 1, 224);
563 qscale = qscale > 128 ? qscale - 96 << 2: qscale;
564 y_data_size = AV_RB16(buf + 2);
565 u_data_size = AV_RB16(buf + 4);
566 v_data_size = slice->data_size - y_data_size - u_data_size - hdr_size;
567 if (hdr_size > 7) v_data_size = AV_RB16(buf + 6);
568 a_data_size = slice->data_size - y_data_size - u_data_size -
569 v_data_size - hdr_size;
571 if (y_data_size < 0 || u_data_size < 0 || v_data_size < 0
572 || hdr_size+y_data_size+u_data_size+v_data_size > slice->data_size){
573 av_log(avctx, AV_LOG_ERROR, "invalid plane data size\n");
574 return AVERROR_INVALIDDATA;
579 for (i = 0; i < 64; i++) {
580 qmat_luma_scaled [i] = ctx->qmat_luma [i] * qscale;
581 qmat_chroma_scaled[i] = ctx->qmat_chroma[i] * qscale;
584 if (ctx->frame_type == 0) {
585 luma_stride = pic->linesize[0];
586 chroma_stride = pic->linesize[1];
588 luma_stride = pic->linesize[0] << 1;
589 chroma_stride = pic->linesize[1] << 1;
592 if (avctx->pix_fmt == AV_PIX_FMT_YUV444P10 || avctx->pix_fmt == AV_PIX_FMT_YUVA444P10) {
594 log2_chroma_blocks_per_mb = 2;
597 log2_chroma_blocks_per_mb = 1;
600 dest_y = pic->data[0] + (slice->mb_y << 4) * luma_stride + (slice->mb_x << 5);
601 dest_u = pic->data[1] + (slice->mb_y << 4) * chroma_stride + (slice->mb_x << mb_x_shift);
602 dest_v = pic->data[2] + (slice->mb_y << 4) * chroma_stride + (slice->mb_x << mb_x_shift);
603 dest_a = pic->data[3] + (slice->mb_y << 4) * luma_stride + (slice->mb_x << 5);
605 if (ctx->frame_type && ctx->first_field ^ ctx->frame->top_field_first) {
606 dest_y += pic->linesize[0];
607 dest_u += pic->linesize[1];
608 dest_v += pic->linesize[2];
609 dest_a += pic->linesize[3];
612 ret = decode_slice_luma(avctx, slice, (uint16_t*)dest_y, luma_stride,
613 buf, y_data_size, qmat_luma_scaled);
617 if (!(avctx->flags & AV_CODEC_FLAG_GRAY) && (u_data_size + v_data_size) > 0) {
618 ret = decode_slice_chroma(avctx, slice, (uint16_t*)dest_u, chroma_stride,
619 buf + y_data_size, u_data_size,
620 qmat_chroma_scaled, log2_chroma_blocks_per_mb);
624 ret = decode_slice_chroma(avctx, slice, (uint16_t*)dest_v, chroma_stride,
625 buf + y_data_size + u_data_size, v_data_size,
626 qmat_chroma_scaled, log2_chroma_blocks_per_mb);
631 size_t mb_max_x = slice->mb_count << (mb_x_shift - 1);
633 for (i = 0; i < 16; ++i)
634 for (j = 0; j < mb_max_x; ++j) {
635 *(uint16_t*)(dest_u + (i * chroma_stride) + (j << 1)) = 511;
636 *(uint16_t*)(dest_v + (i * chroma_stride) + (j << 1)) = 511;
640 /* decode alpha plane if available */
641 if (ctx->alpha_info && pic->data[3] && a_data_size)
642 decode_slice_alpha(ctx, (uint16_t*)dest_a, luma_stride,
643 buf + y_data_size + u_data_size + v_data_size,
644 a_data_size, slice->mb_count);
650 static int decode_picture(AVCodecContext *avctx)
652 ProresContext *ctx = avctx->priv_data;
656 avctx->execute2(avctx, decode_slice_thread, NULL, NULL, ctx->slice_count);
658 for (i = 0; i < ctx->slice_count; i++)
659 error += ctx->slices[i].ret < 0;
662 ctx->frame->decode_error_flags = FF_DECODE_ERROR_INVALID_BITSTREAM;
663 if (error < ctx->slice_count)
666 return ctx->slices[0].ret;
669 static int decode_frame(AVCodecContext *avctx, void *data, int *got_frame,
672 ProresContext *ctx = avctx->priv_data;
673 ThreadFrame tframe = { .f = data };
674 AVFrame *frame = data;
675 const uint8_t *buf = avpkt->data;
676 int buf_size = avpkt->size;
677 int frame_hdr_size, pic_size, ret;
679 if (buf_size < 28 || AV_RL32(buf + 4) != AV_RL32("icpf")) {
680 av_log(avctx, AV_LOG_ERROR, "invalid frame header\n");
681 return AVERROR_INVALIDDATA;
685 ctx->frame->pict_type = AV_PICTURE_TYPE_I;
686 ctx->frame->key_frame = 1;
687 ctx->first_field = 1;
692 frame_hdr_size = decode_frame_header(ctx, buf, buf_size, avctx);
693 if (frame_hdr_size < 0)
694 return frame_hdr_size;
696 buf += frame_hdr_size;
697 buf_size -= frame_hdr_size;
699 if ((ret = ff_thread_get_buffer(avctx, &tframe, 0)) < 0)
703 pic_size = decode_picture_header(avctx, buf, buf_size);
705 av_log(avctx, AV_LOG_ERROR, "error decoding picture header\n");
709 if ((ret = decode_picture(avctx)) < 0) {
710 av_log(avctx, AV_LOG_ERROR, "error decoding picture\n");
715 buf_size -= pic_size;
717 if (ctx->frame_type && buf_size > 0 && ctx->first_field) {
718 ctx->first_field = 0;
728 static int decode_init_thread_copy(AVCodecContext *avctx)
730 ProresContext *ctx = avctx->priv_data;
738 static av_cold int decode_close(AVCodecContext *avctx)
740 ProresContext *ctx = avctx->priv_data;
742 av_freep(&ctx->slices);
747 AVCodec ff_prores_decoder = {
749 .long_name = NULL_IF_CONFIG_SMALL("ProRes (iCodec Pro)"),
750 .type = AVMEDIA_TYPE_VIDEO,
751 .id = AV_CODEC_ID_PRORES,
752 .priv_data_size = sizeof(ProresContext),
754 .init_thread_copy = ONLY_IF_THREADS_ENABLED(decode_init_thread_copy),
755 .close = decode_close,
756 .decode = decode_frame,
757 .capabilities = AV_CODEC_CAP_DR1 | AV_CODEC_CAP_SLICE_THREADS | AV_CODEC_CAP_FRAME_THREADS,
758 .profiles = NULL_IF_CONFIG_SMALL(ff_prores_profiles),