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 #define ALPHA_SHIFT_16_TO_10(alpha_val) (alpha_val >> 6)
50 #define ALPHA_SHIFT_8_TO_10(alpha_val) ((alpha_val << 2) | (alpha_val >> 6))
51 #define ALPHA_SHIFT_16_TO_12(alpha_val) (alpha_val >> 4)
52 #define ALPHA_SHIFT_8_TO_12(alpha_val) ((alpha_val << 4) | (alpha_val >> 4))
54 static void inline unpack_alpha(GetBitContext *gb, uint16_t *dst, int num_coeffs,
55 const int num_bits, const int decode_precision) {
56 const int mask = (1 << num_bits) - 1;
57 int i, idx, val, alpha_val;
64 val = get_bits(gb, num_bits);
67 val = get_bits(gb, num_bits == 16 ? 7 : 4);
73 alpha_val = (alpha_val + val) & mask;
75 if (decode_precision == 10) {
76 dst[idx++] = ALPHA_SHIFT_16_TO_10(alpha_val);
78 dst[idx++] = ALPHA_SHIFT_16_TO_12(alpha_val);
81 if (decode_precision == 10) {
82 dst[idx++] = ALPHA_SHIFT_8_TO_10(alpha_val);
84 dst[idx++] = ALPHA_SHIFT_8_TO_12(alpha_val);
87 if (idx >= num_coeffs)
89 } while (get_bits_left(gb)>0 && get_bits1(gb));
90 val = get_bits(gb, 4);
92 val = get_bits(gb, 11);
93 if (idx + val > num_coeffs)
94 val = num_coeffs - idx;
96 for (i = 0; i < val; i++) {
97 if (decode_precision == 10) {
98 dst[idx++] = ALPHA_SHIFT_16_TO_10(alpha_val);
100 dst[idx++] = ALPHA_SHIFT_16_TO_12(alpha_val);
104 for (i = 0; i < val; i++) {
105 if (decode_precision == 10) {
106 dst[idx++] = ALPHA_SHIFT_8_TO_10(alpha_val);
108 dst[idx++] = ALPHA_SHIFT_8_TO_12(alpha_val);
112 } while (idx < num_coeffs);
115 static void unpack_alpha_10(GetBitContext *gb, uint16_t *dst, int num_coeffs,
118 if (num_bits == 16) {
119 unpack_alpha(gb, dst, num_coeffs, 16, 10);
120 } else { /* 8 bits alpha */
121 unpack_alpha(gb, dst, num_coeffs, 8, 10);
125 static void unpack_alpha_12(GetBitContext *gb, uint16_t *dst, int num_coeffs,
128 if (num_bits == 16) {
129 unpack_alpha(gb, dst, num_coeffs, 16, 12);
130 } else { /* 8 bits alpha */
131 unpack_alpha(gb, dst, num_coeffs, 8, 12);
135 static av_cold int decode_init(AVCodecContext *avctx)
138 ProresContext *ctx = avctx->priv_data;
139 uint8_t idct_permutation[64];
141 avctx->bits_per_raw_sample = 10;
143 switch (avctx->codec_tag) {
144 case MKTAG('a','p','c','o'):
145 avctx->profile = FF_PROFILE_PRORES_PROXY;
147 case MKTAG('a','p','c','s'):
148 avctx->profile = FF_PROFILE_PRORES_LT;
150 case MKTAG('a','p','c','n'):
151 avctx->profile = FF_PROFILE_PRORES_STANDARD;
153 case MKTAG('a','p','c','h'):
154 avctx->profile = FF_PROFILE_PRORES_HQ;
156 case MKTAG('a','p','4','h'):
157 avctx->profile = FF_PROFILE_PRORES_4444;
159 case MKTAG('a','p','4','x'):
160 avctx->profile = FF_PROFILE_PRORES_XQ;
163 avctx->profile = FF_PROFILE_UNKNOWN;
164 av_log(avctx, AV_LOG_WARNING, "Unknown prores profile %d\n", avctx->codec_tag);
167 ff_blockdsp_init(&ctx->bdsp, avctx);
168 ret = ff_proresdsp_init(&ctx->prodsp, avctx);
170 av_log(avctx, AV_LOG_ERROR, "Fail to init proresdsp for bits per raw sample %d\n", avctx->bits_per_raw_sample);
174 ff_init_scantable_permutation(idct_permutation,
175 ctx->prodsp.idct_permutation_type);
177 permute(ctx->progressive_scan, ff_prores_progressive_scan, idct_permutation);
178 permute(ctx->interlaced_scan, ff_prores_interlaced_scan, idct_permutation);
180 if (avctx->bits_per_raw_sample == 10){
181 ctx->unpack_alpha = unpack_alpha_10;
182 } else if (avctx->bits_per_raw_sample == 12){
183 ctx->unpack_alpha = unpack_alpha_12;
185 av_log(avctx, AV_LOG_ERROR, "Fail to set unpack_alpha for bits per raw sample %d\n", avctx->bits_per_raw_sample);
191 static int decode_frame_header(ProresContext *ctx, const uint8_t *buf,
192 const int data_size, AVCodecContext *avctx)
194 int hdr_size, width, height, flags;
198 hdr_size = AV_RB16(buf);
199 ff_dlog(avctx, "header size %d\n", hdr_size);
200 if (hdr_size > data_size) {
201 av_log(avctx, AV_LOG_ERROR, "error, wrong header size\n");
202 return AVERROR_INVALIDDATA;
205 version = AV_RB16(buf + 2);
206 ff_dlog(avctx, "%.4s version %d\n", buf+4, version);
208 av_log(avctx, AV_LOG_ERROR, "unsupported version: %d\n", version);
209 return AVERROR_PATCHWELCOME;
212 width = AV_RB16(buf + 8);
213 height = AV_RB16(buf + 10);
214 if (width != avctx->width || height != avctx->height) {
215 av_log(avctx, AV_LOG_ERROR, "picture resolution change: %dx%d -> %dx%d\n",
216 avctx->width, avctx->height, width, height);
217 return AVERROR_PATCHWELCOME;
220 ctx->frame_type = (buf[12] >> 2) & 3;
221 ctx->alpha_info = buf[17] & 0xf;
223 if (ctx->alpha_info > 2) {
224 av_log(avctx, AV_LOG_ERROR, "Invalid alpha mode %d\n", ctx->alpha_info);
225 return AVERROR_INVALIDDATA;
227 if (avctx->skip_alpha) ctx->alpha_info = 0;
229 ff_dlog(avctx, "frame type %d\n", ctx->frame_type);
231 if (ctx->frame_type == 0) {
232 ctx->scan = ctx->progressive_scan; // permuted
234 ctx->scan = ctx->interlaced_scan; // permuted
235 ctx->frame->interlaced_frame = 1;
236 ctx->frame->top_field_first = ctx->frame_type == 1;
239 if (ctx->alpha_info) {
240 avctx->pix_fmt = (buf[12] & 0xC0) == 0xC0 ? AV_PIX_FMT_YUVA444P10 : AV_PIX_FMT_YUVA422P10;
242 avctx->pix_fmt = (buf[12] & 0xC0) == 0xC0 ? AV_PIX_FMT_YUV444P10 : AV_PIX_FMT_YUV422P10;
245 avctx->color_primaries = buf[14];
246 avctx->color_trc = buf[15];
247 avctx->colorspace = buf[16];
248 avctx->color_range = AVCOL_RANGE_MPEG;
252 ff_dlog(avctx, "flags %x\n", flags);
255 if(buf + data_size - ptr < 64) {
256 av_log(avctx, AV_LOG_ERROR, "Header truncated\n");
257 return AVERROR_INVALIDDATA;
259 permute(ctx->qmat_luma, ctx->prodsp.idct_permutation, ptr);
262 memset(ctx->qmat_luma, 4, 64);
266 if(buf + data_size - ptr < 64) {
267 av_log(avctx, AV_LOG_ERROR, "Header truncated\n");
268 return AVERROR_INVALIDDATA;
270 permute(ctx->qmat_chroma, ctx->prodsp.idct_permutation, ptr);
272 memset(ctx->qmat_chroma, 4, 64);
278 static int decode_picture_header(AVCodecContext *avctx, const uint8_t *buf, const int buf_size)
280 ProresContext *ctx = avctx->priv_data;
281 int i, hdr_size, slice_count;
282 unsigned pic_data_size;
283 int log2_slice_mb_width, log2_slice_mb_height;
284 int slice_mb_count, mb_x, mb_y;
285 const uint8_t *data_ptr, *index_ptr;
287 hdr_size = buf[0] >> 3;
288 if (hdr_size < 8 || hdr_size > buf_size) {
289 av_log(avctx, AV_LOG_ERROR, "error, wrong picture header size\n");
290 return AVERROR_INVALIDDATA;
293 pic_data_size = AV_RB32(buf + 1);
294 if (pic_data_size > buf_size) {
295 av_log(avctx, AV_LOG_ERROR, "error, wrong picture data size\n");
296 return AVERROR_INVALIDDATA;
299 log2_slice_mb_width = buf[7] >> 4;
300 log2_slice_mb_height = buf[7] & 0xF;
301 if (log2_slice_mb_width > 3 || log2_slice_mb_height) {
302 av_log(avctx, AV_LOG_ERROR, "unsupported slice resolution: %dx%d\n",
303 1 << log2_slice_mb_width, 1 << log2_slice_mb_height);
304 return AVERROR_INVALIDDATA;
307 ctx->mb_width = (avctx->width + 15) >> 4;
309 ctx->mb_height = (avctx->height + 31) >> 5;
311 ctx->mb_height = (avctx->height + 15) >> 4;
313 // QT ignores the written value
314 // slice_count = AV_RB16(buf + 5);
315 slice_count = ctx->mb_height * ((ctx->mb_width >> log2_slice_mb_width) +
316 av_popcount(ctx->mb_width & (1 << log2_slice_mb_width) - 1));
318 if (ctx->slice_count != slice_count || !ctx->slices) {
319 av_freep(&ctx->slices);
320 ctx->slice_count = 0;
321 ctx->slices = av_mallocz_array(slice_count, sizeof(*ctx->slices));
323 return AVERROR(ENOMEM);
324 ctx->slice_count = slice_count;
328 return AVERROR(EINVAL);
330 if (hdr_size + slice_count*2 > buf_size) {
331 av_log(avctx, AV_LOG_ERROR, "error, wrong slice count\n");
332 return AVERROR_INVALIDDATA;
335 // parse slice information
336 index_ptr = buf + hdr_size;
337 data_ptr = index_ptr + slice_count*2;
339 slice_mb_count = 1 << log2_slice_mb_width;
343 for (i = 0; i < slice_count; i++) {
344 SliceContext *slice = &ctx->slices[i];
346 slice->data = data_ptr;
347 data_ptr += AV_RB16(index_ptr + i*2);
349 while (ctx->mb_width - mb_x < slice_mb_count)
350 slice_mb_count >>= 1;
354 slice->mb_count = slice_mb_count;
355 slice->data_size = data_ptr - slice->data;
357 if (slice->data_size < 6) {
358 av_log(avctx, AV_LOG_ERROR, "error, wrong slice data size\n");
359 return AVERROR_INVALIDDATA;
362 mb_x += slice_mb_count;
363 if (mb_x == ctx->mb_width) {
364 slice_mb_count = 1 << log2_slice_mb_width;
368 if (data_ptr > buf + buf_size) {
369 av_log(avctx, AV_LOG_ERROR, "error, slice out of bounds\n");
370 return AVERROR_INVALIDDATA;
374 if (mb_x || mb_y != ctx->mb_height) {
375 av_log(avctx, AV_LOG_ERROR, "error wrong mb count y %d h %d\n",
376 mb_y, ctx->mb_height);
377 return AVERROR_INVALIDDATA;
380 return pic_data_size;
383 #define DECODE_CODEWORD(val, codebook, SKIP) \
385 unsigned int rice_order, exp_order, switch_bits; \
386 unsigned int q, buf, bits; \
388 UPDATE_CACHE(re, gb); \
389 buf = GET_CACHE(re, gb); \
391 /* number of bits to switch between rice and exp golomb */ \
392 switch_bits = codebook & 3; \
393 rice_order = codebook >> 5; \
394 exp_order = (codebook >> 2) & 7; \
396 q = 31 - av_log2(buf); \
398 if (q > switch_bits) { /* exp golomb */ \
399 bits = exp_order - switch_bits + (q<<1); \
400 if (bits > FFMIN(MIN_CACHE_BITS, 31)) \
401 return AVERROR_INVALIDDATA; \
402 val = SHOW_UBITS(re, gb, bits) - (1 << exp_order) + \
403 ((switch_bits + 1) << rice_order); \
404 SKIP(re, gb, bits); \
405 } else if (rice_order) { \
406 SKIP_BITS(re, gb, q+1); \
407 val = (q << rice_order) + SHOW_UBITS(re, gb, rice_order); \
408 SKIP(re, gb, rice_order); \
415 #define TOSIGNED(x) (((x) >> 1) ^ (-((x) & 1)))
417 #define FIRST_DC_CB 0xB8
419 static const uint8_t dc_codebook[7] = { 0x04, 0x28, 0x28, 0x4D, 0x4D, 0x70, 0x70};
421 static av_always_inline int decode_dc_coeffs(GetBitContext *gb, int16_t *out,
422 int blocks_per_slice)
429 DECODE_CODEWORD(code, FIRST_DC_CB, LAST_SKIP_BITS);
430 prev_dc = TOSIGNED(code);
433 out += 64; // dc coeff for the next block
437 for (i = 1; i < blocks_per_slice; i++, out += 64) {
438 DECODE_CODEWORD(code, dc_codebook[FFMIN(code, 6U)], LAST_SKIP_BITS);
439 if(code) sign ^= -(code & 1);
441 prev_dc += (((code + 1) >> 1) ^ sign) - sign;
444 CLOSE_READER(re, gb);
448 // adaptive codebook switching lut according to previous run/level values
449 static const uint8_t run_to_cb[16] = { 0x06, 0x06, 0x05, 0x05, 0x04, 0x29, 0x29, 0x29, 0x29, 0x28, 0x28, 0x28, 0x28, 0x28, 0x28, 0x4C };
450 static const uint8_t lev_to_cb[10] = { 0x04, 0x0A, 0x05, 0x06, 0x04, 0x28, 0x28, 0x28, 0x28, 0x4C };
452 static av_always_inline int decode_ac_coeffs(AVCodecContext *avctx, GetBitContext *gb,
453 int16_t *out, int blocks_per_slice)
455 ProresContext *ctx = avctx->priv_data;
456 int block_mask, sign;
457 unsigned pos, run, level;
458 int max_coeffs, i, bits_left;
459 int log2_block_count = av_log2(blocks_per_slice);
462 UPDATE_CACHE(re, gb); \
466 max_coeffs = 64 << log2_block_count;
467 block_mask = blocks_per_slice - 1;
469 for (pos = block_mask;;) {
470 bits_left = gb->size_in_bits - re_index;
471 if (!bits_left || (bits_left < 32 && !SHOW_UBITS(re, gb, bits_left)))
474 DECODE_CODEWORD(run, run_to_cb[FFMIN(run, 15)], LAST_SKIP_BITS);
476 if (pos >= max_coeffs) {
477 av_log(avctx, AV_LOG_ERROR, "ac tex damaged %d, %d\n", pos, max_coeffs);
478 return AVERROR_INVALIDDATA;
481 DECODE_CODEWORD(level, lev_to_cb[FFMIN(level, 9)], SKIP_BITS);
484 i = pos >> log2_block_count;
486 sign = SHOW_SBITS(re, gb, 1);
487 SKIP_BITS(re, gb, 1);
488 out[((pos & block_mask) << 6) + ctx->scan[i]] = ((level ^ sign) - sign);
491 CLOSE_READER(re, gb);
495 static int decode_slice_luma(AVCodecContext *avctx, SliceContext *slice,
496 uint16_t *dst, int dst_stride,
497 const uint8_t *buf, unsigned buf_size,
500 ProresContext *ctx = avctx->priv_data;
501 LOCAL_ALIGNED_32(int16_t, blocks, [8*4*64]);
504 int i, blocks_per_slice = slice->mb_count<<2;
507 for (i = 0; i < blocks_per_slice; i++)
508 ctx->bdsp.clear_block(blocks+(i<<6));
510 init_get_bits(&gb, buf, buf_size << 3);
512 if ((ret = decode_dc_coeffs(&gb, blocks, blocks_per_slice)) < 0)
514 if ((ret = decode_ac_coeffs(avctx, &gb, blocks, blocks_per_slice)) < 0)
518 for (i = 0; i < slice->mb_count; i++) {
519 ctx->prodsp.idct_put(dst, dst_stride, block+(0<<6), qmat);
520 ctx->prodsp.idct_put(dst +8, dst_stride, block+(1<<6), qmat);
521 ctx->prodsp.idct_put(dst+4*dst_stride , dst_stride, block+(2<<6), qmat);
522 ctx->prodsp.idct_put(dst+4*dst_stride+8, dst_stride, block+(3<<6), qmat);
529 static int decode_slice_chroma(AVCodecContext *avctx, SliceContext *slice,
530 uint16_t *dst, int dst_stride,
531 const uint8_t *buf, unsigned buf_size,
532 const int16_t *qmat, int log2_blocks_per_mb)
534 ProresContext *ctx = avctx->priv_data;
535 LOCAL_ALIGNED_32(int16_t, blocks, [8*4*64]);
538 int i, j, blocks_per_slice = slice->mb_count << log2_blocks_per_mb;
541 for (i = 0; i < blocks_per_slice; i++)
542 ctx->bdsp.clear_block(blocks+(i<<6));
544 init_get_bits(&gb, buf, buf_size << 3);
546 if ((ret = decode_dc_coeffs(&gb, blocks, blocks_per_slice)) < 0)
548 if ((ret = decode_ac_coeffs(avctx, &gb, blocks, blocks_per_slice)) < 0)
552 for (i = 0; i < slice->mb_count; i++) {
553 for (j = 0; j < log2_blocks_per_mb; j++) {
554 ctx->prodsp.idct_put(dst, dst_stride, block+(0<<6), qmat);
555 ctx->prodsp.idct_put(dst+4*dst_stride, dst_stride, block+(1<<6), qmat);
564 * Decode alpha slice plane.
566 static void decode_slice_alpha(ProresContext *ctx,
567 uint16_t *dst, int dst_stride,
568 const uint8_t *buf, int buf_size,
569 int blocks_per_slice)
573 LOCAL_ALIGNED_32(int16_t, blocks, [8*4*64]);
576 for (i = 0; i < blocks_per_slice<<2; i++)
577 ctx->bdsp.clear_block(blocks+(i<<6));
579 init_get_bits(&gb, buf, buf_size << 3);
581 if (ctx->alpha_info == 2) {
582 ctx->unpack_alpha(&gb, blocks, blocks_per_slice * 4 * 64, 16);
584 ctx->unpack_alpha(&gb, blocks, blocks_per_slice * 4 * 64, 8);
588 for (i = 0; i < 16; i++) {
589 memcpy(dst, block, 16 * blocks_per_slice * sizeof(*dst));
590 dst += dst_stride >> 1;
591 block += 16 * blocks_per_slice;
595 static int decode_slice_thread(AVCodecContext *avctx, void *arg, int jobnr, int threadnr)
597 ProresContext *ctx = avctx->priv_data;
598 SliceContext *slice = &ctx->slices[jobnr];
599 const uint8_t *buf = slice->data;
600 AVFrame *pic = ctx->frame;
601 int i, hdr_size, qscale, log2_chroma_blocks_per_mb;
602 int luma_stride, chroma_stride;
603 int y_data_size, u_data_size, v_data_size, a_data_size;
604 uint8_t *dest_y, *dest_u, *dest_v, *dest_a;
605 LOCAL_ALIGNED_16(int16_t, qmat_luma_scaled, [64]);
606 LOCAL_ALIGNED_16(int16_t, qmat_chroma_scaled,[64]);
611 //av_log(avctx, AV_LOG_INFO, "slice %d mb width %d mb x %d y %d\n",
612 // jobnr, slice->mb_count, slice->mb_x, slice->mb_y);
615 hdr_size = buf[0] >> 3;
616 qscale = av_clip(buf[1], 1, 224);
617 qscale = qscale > 128 ? qscale - 96 << 2: qscale;
618 y_data_size = AV_RB16(buf + 2);
619 u_data_size = AV_RB16(buf + 4);
620 v_data_size = slice->data_size - y_data_size - u_data_size - hdr_size;
621 if (hdr_size > 7) v_data_size = AV_RB16(buf + 6);
622 a_data_size = slice->data_size - y_data_size - u_data_size -
623 v_data_size - hdr_size;
625 if (y_data_size < 0 || u_data_size < 0 || v_data_size < 0
626 || hdr_size+y_data_size+u_data_size+v_data_size > slice->data_size){
627 av_log(avctx, AV_LOG_ERROR, "invalid plane data size\n");
628 return AVERROR_INVALIDDATA;
633 for (i = 0; i < 64; i++) {
634 qmat_luma_scaled [i] = ctx->qmat_luma [i] * qscale;
635 qmat_chroma_scaled[i] = ctx->qmat_chroma[i] * qscale;
638 if (ctx->frame_type == 0) {
639 luma_stride = pic->linesize[0];
640 chroma_stride = pic->linesize[1];
642 luma_stride = pic->linesize[0] << 1;
643 chroma_stride = pic->linesize[1] << 1;
646 if (avctx->pix_fmt == AV_PIX_FMT_YUV444P10 || avctx->pix_fmt == AV_PIX_FMT_YUVA444P10) {
648 log2_chroma_blocks_per_mb = 2;
651 log2_chroma_blocks_per_mb = 1;
654 dest_y = pic->data[0] + (slice->mb_y << 4) * luma_stride + (slice->mb_x << 5);
655 dest_u = pic->data[1] + (slice->mb_y << 4) * chroma_stride + (slice->mb_x << mb_x_shift);
656 dest_v = pic->data[2] + (slice->mb_y << 4) * chroma_stride + (slice->mb_x << mb_x_shift);
657 dest_a = pic->data[3] + (slice->mb_y << 4) * luma_stride + (slice->mb_x << 5);
659 if (ctx->frame_type && ctx->first_field ^ ctx->frame->top_field_first) {
660 dest_y += pic->linesize[0];
661 dest_u += pic->linesize[1];
662 dest_v += pic->linesize[2];
663 dest_a += pic->linesize[3];
666 ret = decode_slice_luma(avctx, slice, (uint16_t*)dest_y, luma_stride,
667 buf, y_data_size, qmat_luma_scaled);
671 if (!(avctx->flags & AV_CODEC_FLAG_GRAY) && (u_data_size + v_data_size) > 0) {
672 ret = decode_slice_chroma(avctx, slice, (uint16_t*)dest_u, chroma_stride,
673 buf + y_data_size, u_data_size,
674 qmat_chroma_scaled, log2_chroma_blocks_per_mb);
678 ret = decode_slice_chroma(avctx, slice, (uint16_t*)dest_v, chroma_stride,
679 buf + y_data_size + u_data_size, v_data_size,
680 qmat_chroma_scaled, log2_chroma_blocks_per_mb);
685 size_t mb_max_x = slice->mb_count << (mb_x_shift - 1);
687 for (i = 0; i < 16; ++i)
688 for (j = 0; j < mb_max_x; ++j) {
689 *(uint16_t*)(dest_u + (i * chroma_stride) + (j << 1)) = 511;
690 *(uint16_t*)(dest_v + (i * chroma_stride) + (j << 1)) = 511;
694 /* decode alpha plane if available */
695 if (ctx->alpha_info && pic->data[3] && a_data_size)
696 decode_slice_alpha(ctx, (uint16_t*)dest_a, luma_stride,
697 buf + y_data_size + u_data_size + v_data_size,
698 a_data_size, slice->mb_count);
704 static int decode_picture(AVCodecContext *avctx)
706 ProresContext *ctx = avctx->priv_data;
710 avctx->execute2(avctx, decode_slice_thread, NULL, NULL, ctx->slice_count);
712 for (i = 0; i < ctx->slice_count; i++)
713 error += ctx->slices[i].ret < 0;
716 ctx->frame->decode_error_flags = FF_DECODE_ERROR_INVALID_BITSTREAM;
717 if (error < ctx->slice_count)
720 return ctx->slices[0].ret;
723 static int decode_frame(AVCodecContext *avctx, void *data, int *got_frame,
726 ProresContext *ctx = avctx->priv_data;
727 ThreadFrame tframe = { .f = data };
728 AVFrame *frame = data;
729 const uint8_t *buf = avpkt->data;
730 int buf_size = avpkt->size;
731 int frame_hdr_size, pic_size, ret;
733 if (buf_size < 28 || AV_RL32(buf + 4) != AV_RL32("icpf")) {
734 av_log(avctx, AV_LOG_ERROR, "invalid frame header\n");
735 return AVERROR_INVALIDDATA;
739 ctx->frame->pict_type = AV_PICTURE_TYPE_I;
740 ctx->frame->key_frame = 1;
741 ctx->first_field = 1;
746 frame_hdr_size = decode_frame_header(ctx, buf, buf_size, avctx);
747 if (frame_hdr_size < 0)
748 return frame_hdr_size;
750 buf += frame_hdr_size;
751 buf_size -= frame_hdr_size;
753 if ((ret = ff_thread_get_buffer(avctx, &tframe, 0)) < 0)
757 pic_size = decode_picture_header(avctx, buf, buf_size);
759 av_log(avctx, AV_LOG_ERROR, "error decoding picture header\n");
763 if ((ret = decode_picture(avctx)) < 0) {
764 av_log(avctx, AV_LOG_ERROR, "error decoding picture\n");
769 buf_size -= pic_size;
771 if (ctx->frame_type && buf_size > 0 && ctx->first_field) {
772 ctx->first_field = 0;
782 static int decode_init_thread_copy(AVCodecContext *avctx)
784 ProresContext *ctx = avctx->priv_data;
792 static av_cold int decode_close(AVCodecContext *avctx)
794 ProresContext *ctx = avctx->priv_data;
796 av_freep(&ctx->slices);
801 AVCodec ff_prores_decoder = {
803 .long_name = NULL_IF_CONFIG_SMALL("ProRes (iCodec Pro)"),
804 .type = AVMEDIA_TYPE_VIDEO,
805 .id = AV_CODEC_ID_PRORES,
806 .priv_data_size = sizeof(ProresContext),
808 .init_thread_copy = ONLY_IF_THREADS_ENABLED(decode_init_thread_copy),
809 .close = decode_close,
810 .decode = decode_frame,
811 .capabilities = AV_CODEC_CAP_DR1 | AV_CODEC_CAP_SLICE_THREADS | AV_CODEC_CAP_FRAME_THREADS,
812 .profiles = NULL_IF_CONFIG_SMALL(ff_prores_profiles),