3 * Copyright (c) 2011 Konstantin Shishkov
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
30 #define UNCHECKED_BITSTREAM_READER 1
32 #include "libavutil/intreadwrite.h"
35 #include "bytestream.h"
41 static int build_huff10(const uint8_t *src, VLC *vlc, int *fsym)
52 for (i = 0; i < 1024; i++) {
56 qsort(he, 1024, sizeof(*he), ff_ut10_huff_cmp_len);
64 while (he[last].len == 255 && last)
67 if (he[last].len > 32) {
72 for (i = last; i >= 0; i--) {
73 codes[i] = code >> (32 - he[i].len);
76 code += 0x80000000u >> (he[i].len - 1);
79 return ff_init_vlc_sparse(vlc, VLC_BITS, last + 1,
80 bits, sizeof(*bits), sizeof(*bits),
81 codes, sizeof(*codes), sizeof(*codes),
82 syms, sizeof(*syms), sizeof(*syms), 0);
85 static int build_huff(const uint8_t *src, VLC *vlc, int *fsym)
96 for (i = 0; i < 256; i++) {
100 qsort(he, 256, sizeof(*he), ff_ut_huff_cmp_len);
108 while (he[last].len == 255 && last)
111 if (he[last].len > 32)
115 for (i = last; i >= 0; i--) {
116 codes[i] = code >> (32 - he[i].len);
119 code += 0x80000000u >> (he[i].len - 1);
122 return ff_init_vlc_sparse(vlc, VLC_BITS, last + 1,
123 bits, sizeof(*bits), sizeof(*bits),
124 codes, sizeof(*codes), sizeof(*codes),
125 syms, sizeof(*syms), sizeof(*syms), 0);
128 static int decode_plane10(UtvideoContext *c, int plane_no,
129 uint16_t *dst, ptrdiff_t stride,
130 int width, int height,
131 const uint8_t *src, const uint8_t *huff,
134 int i, j, slice, pix, ret;
140 if ((ret = build_huff10(huff, &vlc, &fsym)) < 0) {
141 av_log(c->avctx, AV_LOG_ERROR, "Cannot build Huffman codes\n");
144 if (fsym >= 0) { // build_huff reported a symbol to fill slices with
146 for (slice = 0; slice < c->slices; slice++) {
150 send = (height * (slice + 1) / c->slices);
151 dest = dst + sstart * stride;
154 for (j = sstart; j < send; j++) {
155 for (i = 0; i < width; i++) {
171 for (slice = 0; slice < c->slices; slice++) {
173 int slice_data_start, slice_data_end, slice_size;
176 send = (height * (slice + 1) / c->slices);
177 dest = dst + sstart * stride;
179 // slice offset and size validation was done earlier
180 slice_data_start = slice ? AV_RL32(src + slice * 4 - 4) : 0;
181 slice_data_end = AV_RL32(src + slice * 4);
182 slice_size = slice_data_end - slice_data_start;
185 av_log(c->avctx, AV_LOG_ERROR, "Plane has more than one symbol "
186 "yet a slice has a length of zero.\n");
190 memset(c->slice_bits + slice_size, 0, AV_INPUT_BUFFER_PADDING_SIZE);
191 c->bdsp.bswap_buf((uint32_t *) c->slice_bits,
192 (uint32_t *)(src + slice_data_start + c->slices * 4),
193 (slice_data_end - slice_data_start + 3) >> 2);
194 init_get_bits(&gb, c->slice_bits, slice_size * 8);
197 for (j = sstart; j < send; j++) {
198 for (i = 0; i < width; i++) {
199 pix = get_vlc2(&gb, vlc.table, VLC_BITS, 3);
201 av_log(c->avctx, AV_LOG_ERROR, "Decoding error\n");
212 if (get_bits_left(&gb) < 0) {
213 av_log(c->avctx, AV_LOG_ERROR,
214 "Slice decoding ran out of bits\n");
218 if (get_bits_left(&gb) > 32)
219 av_log(c->avctx, AV_LOG_WARNING,
220 "%d bits left after decoding slice\n", get_bits_left(&gb));
228 return AVERROR_INVALIDDATA;
231 static int compute_cmask(int plane_no, int interlaced, enum AVPixelFormat pix_fmt)
233 const int is_luma = (pix_fmt == AV_PIX_FMT_YUV420P) && !plane_no;
236 return ~(1 + 2 * is_luma);
241 static int decode_plane(UtvideoContext *c, int plane_no,
242 uint8_t *dst, ptrdiff_t stride,
243 int width, int height,
244 const uint8_t *src, int use_pred)
246 int i, j, slice, pix;
251 const int cmask = compute_cmask(plane_no, c->interlaced, c->avctx->pix_fmt);
253 if (build_huff(src, &vlc, &fsym)) {
254 av_log(c->avctx, AV_LOG_ERROR, "Cannot build Huffman codes\n");
255 return AVERROR_INVALIDDATA;
257 if (fsym >= 0) { // build_huff reported a symbol to fill slices with
259 for (slice = 0; slice < c->slices; slice++) {
263 send = (height * (slice + 1) / c->slices) & cmask;
264 dest = dst + sstart * stride;
267 for (j = sstart; j < send; j++) {
268 for (i = 0; i < width; i++) {
285 for (slice = 0; slice < c->slices; slice++) {
287 int slice_data_start, slice_data_end, slice_size;
290 send = (height * (slice + 1) / c->slices) & cmask;
291 dest = dst + sstart * stride;
293 // slice offset and size validation was done earlier
294 slice_data_start = slice ? AV_RL32(src + slice * 4 - 4) : 0;
295 slice_data_end = AV_RL32(src + slice * 4);
296 slice_size = slice_data_end - slice_data_start;
299 av_log(c->avctx, AV_LOG_ERROR, "Plane has more than one symbol "
300 "yet a slice has a length of zero.\n");
304 memset(c->slice_bits + slice_size, 0, AV_INPUT_BUFFER_PADDING_SIZE);
305 c->bdsp.bswap_buf((uint32_t *) c->slice_bits,
306 (uint32_t *)(src + slice_data_start + c->slices * 4),
307 (slice_data_end - slice_data_start + 3) >> 2);
308 init_get_bits(&gb, c->slice_bits, slice_size * 8);
311 for (j = sstart; j < send; j++) {
312 for (i = 0; i < width; i++) {
313 pix = get_vlc2(&gb, vlc.table, VLC_BITS, 3);
315 av_log(c->avctx, AV_LOG_ERROR, "Decoding error\n");
324 if (get_bits_left(&gb) < 0) {
325 av_log(c->avctx, AV_LOG_ERROR,
326 "Slice decoding ran out of bits\n");
331 if (get_bits_left(&gb) > 32)
332 av_log(c->avctx, AV_LOG_WARNING,
333 "%d bits left after decoding slice\n", get_bits_left(&gb));
341 return AVERROR_INVALIDDATA;
348 static void restore_median_planar(UtvideoContext *c, uint8_t *src, ptrdiff_t stride,
349 int width, int height, int slices, int rmode)
354 int slice_start, slice_height;
355 const int cmask = ~rmode;
357 for (slice = 0; slice < slices; slice++) {
358 slice_start = ((slice * height) / slices) & cmask;
359 slice_height = ((((slice + 1) * height) / slices) & cmask) -
364 bsrc = src + slice_start * stride;
366 // first line - left neighbour prediction
368 c->llviddsp.add_left_pred(bsrc, bsrc, width, 0);
370 if (slice_height <= 1)
372 // second line - first element has top prediction, the rest uses median
376 for (i = 1; i < FFMIN(width, 16); i++) { /* scalar loop (DSP need align 16) */
377 B = bsrc[i - stride];
378 bsrc[i] += mid_pred(A, B, (uint8_t)(A + B - C));
383 c->llviddsp.add_median_pred(bsrc + 16, bsrc - stride + 16,
384 bsrc + 16, width - 16, &A, &B);
387 // the rest of lines use continuous median prediction
388 for (j = 2; j < slice_height; j++) {
389 c->llviddsp.add_median_pred(bsrc, bsrc - stride,
390 bsrc, width, &A, &B);
396 /* UtVideo interlaced mode treats every two lines as a single one,
397 * so restoring function should take care of possible padding between
398 * two parts of the same "line".
400 static void restore_median_planar_il(UtvideoContext *c, uint8_t *src, ptrdiff_t stride,
401 int width, int height, int slices, int rmode)
406 int slice_start, slice_height;
407 const int cmask = ~(rmode ? 3 : 1);
408 const ptrdiff_t stride2 = stride << 1;
410 for (slice = 0; slice < slices; slice++) {
411 slice_start = ((slice * height) / slices) & cmask;
412 slice_height = ((((slice + 1) * height) / slices) & cmask) -
418 bsrc = src + slice_start * stride;
420 // first line - left neighbour prediction
422 A = c->llviddsp.add_left_pred(bsrc, bsrc, width, 0);
423 c->llviddsp.add_left_pred(bsrc + stride, bsrc + stride, width, A);
425 if (slice_height <= 1)
427 // second line - first element has top prediction, the rest uses median
431 for (i = 1; i < FFMIN(width, 16); i++) { /* scalar loop (DSP need align 16) */
432 B = bsrc[i - stride2];
433 bsrc[i] += mid_pred(A, B, (uint8_t)(A + B - C));
438 c->llviddsp.add_median_pred(bsrc + 16, bsrc - stride2 + 16,
439 bsrc + 16, width - 16, &A, &B);
441 c->llviddsp.add_median_pred(bsrc + stride, bsrc - stride,
442 bsrc + stride, width, &A, &B);
444 // the rest of lines use continuous median prediction
445 for (j = 2; j < slice_height; j++) {
446 c->llviddsp.add_median_pred(bsrc, bsrc - stride2,
447 bsrc, width, &A, &B);
448 c->llviddsp.add_median_pred(bsrc + stride, bsrc - stride,
449 bsrc + stride, width, &A, &B);
455 static void restore_gradient_planar(UtvideoContext *c, uint8_t *src, ptrdiff_t stride,
456 int width, int height, int slices, int rmode)
461 int slice_start, slice_height;
462 const int cmask = ~rmode;
463 int min_width = FFMIN(width, 32);
465 for (slice = 0; slice < slices; slice++) {
466 slice_start = ((slice * height) / slices) & cmask;
467 slice_height = ((((slice + 1) * height) / slices) & cmask) -
472 bsrc = src + slice_start * stride;
474 // first line - left neighbour prediction
476 c->llviddsp.add_left_pred(bsrc, bsrc, width, 0);
478 if (slice_height <= 1)
480 for (j = 1; j < slice_height; j++) {
481 // second line - first element has top prediction, the rest uses gradient
482 bsrc[0] = (bsrc[0] + bsrc[-stride]) & 0xFF;
483 for (i = 1; i < min_width; i++) { /* dsp need align 32 */
484 A = bsrc[i - stride];
485 B = bsrc[i - (stride + 1)];
487 bsrc[i] = (A - B + C + bsrc[i]) & 0xFF;
490 c->llviddsp.add_gradient_pred(bsrc + 32, stride, width - 32);
496 static void restore_gradient_planar_il(UtvideoContext *c, uint8_t *src, ptrdiff_t stride,
497 int width, int height, int slices, int rmode)
502 int slice_start, slice_height;
503 const int cmask = ~(rmode ? 3 : 1);
504 const ptrdiff_t stride2 = stride << 1;
505 int min_width = FFMIN(width, 32);
507 for (slice = 0; slice < slices; slice++) {
508 slice_start = ((slice * height) / slices) & cmask;
509 slice_height = ((((slice + 1) * height) / slices) & cmask) -
515 bsrc = src + slice_start * stride;
517 // first line - left neighbour prediction
519 A = c->llviddsp.add_left_pred(bsrc, bsrc, width, 0);
520 c->llviddsp.add_left_pred(bsrc + stride, bsrc + stride, width, A);
522 if (slice_height <= 1)
524 for (j = 1; j < slice_height; j++) {
525 // second line - first element has top prediction, the rest uses gradient
526 bsrc[0] = (bsrc[0] + bsrc[-stride2]) & 0xFF;
527 for (i = 1; i < min_width; i++) { /* dsp need align 32 */
528 A = bsrc[i - stride2];
529 B = bsrc[i - (stride2 + 1)];
531 bsrc[i] = (A - B + C + bsrc[i]) & 0xFF;
534 c->llviddsp.add_gradient_pred(bsrc + 32, stride2, width - 32);
537 B = bsrc[-(1 + stride + stride - width)];
539 bsrc[stride] = (A - B + C + bsrc[stride]) & 0xFF;
540 for (i = 1; i < width; i++) {
541 A = bsrc[i - stride];
542 B = bsrc[i - (1 + stride)];
543 C = bsrc[i - 1 + stride];
544 bsrc[i + stride] = (A - B + C + bsrc[i + stride]) & 0xFF;
551 static int decode_frame(AVCodecContext *avctx, void *data, int *got_frame,
554 const uint8_t *buf = avpkt->data;
555 int buf_size = avpkt->size;
556 UtvideoContext *c = avctx->priv_data;
558 const uint8_t *plane_start[5];
559 int plane_size, max_slice_size = 0, slice_start, slice_end, slice_size;
562 ThreadFrame frame = { .f = data };
564 if ((ret = ff_thread_get_buffer(avctx, &frame, 0)) < 0)
567 /* parse plane structure to get frame flags and validate slice offsets */
568 bytestream2_init(&gb, buf, buf_size);
570 if (bytestream2_get_bytes_left(&gb) < c->frame_info_size) {
571 av_log(avctx, AV_LOG_ERROR, "Not enough data for frame information\n");
572 return AVERROR_INVALIDDATA;
574 c->frame_info = bytestream2_get_le32u(&gb);
575 c->slices = ((c->frame_info >> 16) & 0xff) + 1;
576 for (i = 0; i < c->planes; i++) {
577 plane_start[i] = gb.buffer;
578 if (bytestream2_get_bytes_left(&gb) < 1024 + 4 * c->slices) {
579 av_log(avctx, AV_LOG_ERROR, "Insufficient data for a plane\n");
580 return AVERROR_INVALIDDATA;
584 for (j = 0; j < c->slices; j++) {
585 slice_end = bytestream2_get_le32u(&gb);
586 if (slice_end < 0 || slice_end < slice_start ||
587 bytestream2_get_bytes_left(&gb) < slice_end) {
588 av_log(avctx, AV_LOG_ERROR, "Incorrect slice size\n");
589 return AVERROR_INVALIDDATA;
591 slice_size = slice_end - slice_start;
592 slice_start = slice_end;
593 max_slice_size = FFMAX(max_slice_size, slice_size);
595 plane_size = slice_end;
596 bytestream2_skipu(&gb, plane_size);
597 bytestream2_skipu(&gb, 1024);
599 plane_start[c->planes] = gb.buffer;
601 for (i = 0; i < c->planes; i++) {
602 plane_start[i] = gb.buffer;
603 if (bytestream2_get_bytes_left(&gb) < 256 + 4 * c->slices) {
604 av_log(avctx, AV_LOG_ERROR, "Insufficient data for a plane\n");
605 return AVERROR_INVALIDDATA;
607 bytestream2_skipu(&gb, 256);
610 for (j = 0; j < c->slices; j++) {
611 slice_end = bytestream2_get_le32u(&gb);
612 if (slice_end < 0 || slice_end < slice_start ||
613 bytestream2_get_bytes_left(&gb) < slice_end) {
614 av_log(avctx, AV_LOG_ERROR, "Incorrect slice size\n");
615 return AVERROR_INVALIDDATA;
617 slice_size = slice_end - slice_start;
618 slice_start = slice_end;
619 max_slice_size = FFMAX(max_slice_size, slice_size);
621 plane_size = slice_end;
622 bytestream2_skipu(&gb, plane_size);
624 plane_start[c->planes] = gb.buffer;
625 if (bytestream2_get_bytes_left(&gb) < c->frame_info_size) {
626 av_log(avctx, AV_LOG_ERROR, "Not enough data for frame information\n");
627 return AVERROR_INVALIDDATA;
629 c->frame_info = bytestream2_get_le32u(&gb);
631 av_log(avctx, AV_LOG_DEBUG, "frame information flags %"PRIX32"\n",
634 c->frame_pred = (c->frame_info >> 8) & 3;
636 max_slice_size += 4*avctx->width;
638 av_fast_malloc(&c->slice_bits, &c->slice_bits_size,
639 max_slice_size + AV_INPUT_BUFFER_PADDING_SIZE);
641 if (!c->slice_bits) {
642 av_log(avctx, AV_LOG_ERROR, "Cannot allocate temporary buffer\n");
643 return AVERROR(ENOMEM);
646 switch (c->avctx->pix_fmt) {
647 case AV_PIX_FMT_GBRP:
648 case AV_PIX_FMT_GBRAP:
649 for (i = 0; i < c->planes; i++) {
650 ret = decode_plane(c, i, frame.f->data[i],
651 frame.f->linesize[i], avctx->width,
652 avctx->height, plane_start[i],
653 c->frame_pred == PRED_LEFT);
656 if (c->frame_pred == PRED_MEDIAN) {
657 if (!c->interlaced) {
658 restore_median_planar(c, frame.f->data[i],
659 frame.f->linesize[i], avctx->width,
660 avctx->height, c->slices, 0);
662 restore_median_planar_il(c, frame.f->data[i],
663 frame.f->linesize[i],
664 avctx->width, avctx->height, c->slices,
667 } else if (c->frame_pred == PRED_GRADIENT) {
668 if (!c->interlaced) {
669 restore_gradient_planar(c, frame.f->data[i],
670 frame.f->linesize[i], avctx->width,
671 avctx->height, c->slices, 0);
673 restore_gradient_planar_il(c, frame.f->data[i],
674 frame.f->linesize[i],
675 avctx->width, avctx->height, c->slices,
680 c->utdsp.restore_rgb_planes(frame.f->data[2], frame.f->data[0], frame.f->data[1],
681 frame.f->linesize[2], frame.f->linesize[0], frame.f->linesize[1],
682 avctx->width, avctx->height);
684 case AV_PIX_FMT_GBRAP10:
685 case AV_PIX_FMT_GBRP10:
686 for (i = 0; i < c->planes; i++) {
687 ret = decode_plane10(c, i, (uint16_t *)frame.f->data[i],
688 frame.f->linesize[i] / 2, avctx->width,
689 avctx->height, plane_start[i],
690 plane_start[i + 1] - 1024,
691 c->frame_pred == PRED_LEFT);
695 c->utdsp.restore_rgb_planes10((uint16_t *)frame.f->data[2], (uint16_t *)frame.f->data[0], (uint16_t *)frame.f->data[1],
696 frame.f->linesize[2] / 2, frame.f->linesize[0] / 2, frame.f->linesize[1] / 2,
697 avctx->width, avctx->height);
699 case AV_PIX_FMT_YUV420P:
700 for (i = 0; i < 3; i++) {
701 ret = decode_plane(c, i, frame.f->data[i], frame.f->linesize[i],
702 avctx->width >> !!i, avctx->height >> !!i,
703 plane_start[i], c->frame_pred == PRED_LEFT);
706 if (c->frame_pred == PRED_MEDIAN) {
707 if (!c->interlaced) {
708 restore_median_planar(c, frame.f->data[i], frame.f->linesize[i],
709 avctx->width >> !!i, avctx->height >> !!i,
712 restore_median_planar_il(c, frame.f->data[i], frame.f->linesize[i],
714 avctx->height >> !!i,
717 } else if (c->frame_pred == PRED_GRADIENT) {
718 if (!c->interlaced) {
719 restore_gradient_planar(c, frame.f->data[i], frame.f->linesize[i],
720 avctx->width >> !!i, avctx->height >> !!i,
723 restore_gradient_planar_il(c, frame.f->data[i], frame.f->linesize[i],
725 avctx->height >> !!i,
731 case AV_PIX_FMT_YUV422P:
732 for (i = 0; i < 3; i++) {
733 ret = decode_plane(c, i, frame.f->data[i], frame.f->linesize[i],
734 avctx->width >> !!i, avctx->height,
735 plane_start[i], c->frame_pred == PRED_LEFT);
738 if (c->frame_pred == PRED_MEDIAN) {
739 if (!c->interlaced) {
740 restore_median_planar(c, frame.f->data[i], frame.f->linesize[i],
741 avctx->width >> !!i, avctx->height,
744 restore_median_planar_il(c, frame.f->data[i], frame.f->linesize[i],
745 avctx->width >> !!i, avctx->height,
748 } else if (c->frame_pred == PRED_GRADIENT) {
749 if (!c->interlaced) {
750 restore_gradient_planar(c, frame.f->data[i], frame.f->linesize[i],
751 avctx->width >> !!i, avctx->height,
754 restore_gradient_planar_il(c, frame.f->data[i], frame.f->linesize[i],
755 avctx->width >> !!i, avctx->height,
761 case AV_PIX_FMT_YUV444P:
762 for (i = 0; i < 3; i++) {
763 ret = decode_plane(c, i, frame.f->data[i], frame.f->linesize[i],
764 avctx->width, avctx->height,
765 plane_start[i], c->frame_pred == PRED_LEFT);
768 if (c->frame_pred == PRED_MEDIAN) {
769 if (!c->interlaced) {
770 restore_median_planar(c, frame.f->data[i], frame.f->linesize[i],
771 avctx->width, avctx->height,
774 restore_median_planar_il(c, frame.f->data[i], frame.f->linesize[i],
775 avctx->width, avctx->height,
778 } else if (c->frame_pred == PRED_GRADIENT) {
779 if (!c->interlaced) {
780 restore_gradient_planar(c, frame.f->data[i], frame.f->linesize[i],
781 avctx->width, avctx->height,
784 restore_gradient_planar_il(c, frame.f->data[i], frame.f->linesize[i],
785 avctx->width, avctx->height,
791 case AV_PIX_FMT_YUV422P10:
792 for (i = 0; i < 3; i++) {
793 ret = decode_plane10(c, i, (uint16_t *)frame.f->data[i], frame.f->linesize[i] / 2,
794 avctx->width >> !!i, avctx->height,
795 plane_start[i], plane_start[i + 1] - 1024, c->frame_pred == PRED_LEFT);
802 frame.f->key_frame = 1;
803 frame.f->pict_type = AV_PICTURE_TYPE_I;
804 frame.f->interlaced_frame = !!c->interlaced;
808 /* always report that the buffer was completely consumed */
812 static av_cold int decode_init(AVCodecContext *avctx)
814 UtvideoContext * const c = avctx->priv_data;
818 ff_utvideodsp_init(&c->utdsp);
819 ff_bswapdsp_init(&c->bdsp);
820 ff_llviddsp_init(&c->llviddsp);
822 if (avctx->extradata_size >= 16) {
823 av_log(avctx, AV_LOG_DEBUG, "Encoder version %d.%d.%d.%d\n",
824 avctx->extradata[3], avctx->extradata[2],
825 avctx->extradata[1], avctx->extradata[0]);
826 av_log(avctx, AV_LOG_DEBUG, "Original format %"PRIX32"\n",
827 AV_RB32(avctx->extradata + 4));
828 c->frame_info_size = AV_RL32(avctx->extradata + 8);
829 c->flags = AV_RL32(avctx->extradata + 12);
831 if (c->frame_info_size != 4)
832 avpriv_request_sample(avctx, "Frame info not 4 bytes");
833 av_log(avctx, AV_LOG_DEBUG, "Encoding parameters %08"PRIX32"\n", c->flags);
834 c->slices = (c->flags >> 24) + 1;
835 c->compression = c->flags & 1;
836 c->interlaced = c->flags & 0x800;
837 } else if (avctx->extradata_size == 8) {
838 av_log(avctx, AV_LOG_DEBUG, "Encoder version %d.%d.%d.%d\n",
839 avctx->extradata[3], avctx->extradata[2],
840 avctx->extradata[1], avctx->extradata[0]);
841 av_log(avctx, AV_LOG_DEBUG, "Original format %"PRIX32"\n",
842 AV_RB32(avctx->extradata + 4));
845 c->frame_info_size = 4;
847 av_log(avctx, AV_LOG_ERROR,
848 "Insufficient extradata size %d, should be at least 16\n",
849 avctx->extradata_size);
850 return AVERROR_INVALIDDATA;
853 c->slice_bits_size = 0;
855 switch (avctx->codec_tag) {
856 case MKTAG('U', 'L', 'R', 'G'):
858 avctx->pix_fmt = AV_PIX_FMT_GBRP;
860 case MKTAG('U', 'L', 'R', 'A'):
862 avctx->pix_fmt = AV_PIX_FMT_GBRAP;
864 case MKTAG('U', 'L', 'Y', '0'):
866 avctx->pix_fmt = AV_PIX_FMT_YUV420P;
867 avctx->colorspace = AVCOL_SPC_BT470BG;
869 case MKTAG('U', 'L', 'Y', '2'):
871 avctx->pix_fmt = AV_PIX_FMT_YUV422P;
872 avctx->colorspace = AVCOL_SPC_BT470BG;
874 case MKTAG('U', 'L', 'Y', '4'):
876 avctx->pix_fmt = AV_PIX_FMT_YUV444P;
877 avctx->colorspace = AVCOL_SPC_BT470BG;
879 case MKTAG('U', 'Q', 'Y', '2'):
881 avctx->pix_fmt = AV_PIX_FMT_YUV422P10;
883 case MKTAG('U', 'Q', 'R', 'G'):
885 avctx->pix_fmt = AV_PIX_FMT_GBRP10;
887 case MKTAG('U', 'Q', 'R', 'A'):
889 avctx->pix_fmt = AV_PIX_FMT_GBRAP10;
891 case MKTAG('U', 'L', 'H', '0'):
893 avctx->pix_fmt = AV_PIX_FMT_YUV420P;
894 avctx->colorspace = AVCOL_SPC_BT709;
896 case MKTAG('U', 'L', 'H', '2'):
898 avctx->pix_fmt = AV_PIX_FMT_YUV422P;
899 avctx->colorspace = AVCOL_SPC_BT709;
901 case MKTAG('U', 'L', 'H', '4'):
903 avctx->pix_fmt = AV_PIX_FMT_YUV444P;
904 avctx->colorspace = AVCOL_SPC_BT709;
907 av_log(avctx, AV_LOG_ERROR, "Unknown Ut Video FOURCC provided (%08X)\n",
909 return AVERROR_INVALIDDATA;
915 static av_cold int decode_end(AVCodecContext *avctx)
917 UtvideoContext * const c = avctx->priv_data;
919 av_freep(&c->slice_bits);
924 AVCodec ff_utvideo_decoder = {
926 .long_name = NULL_IF_CONFIG_SMALL("Ut Video"),
927 .type = AVMEDIA_TYPE_VIDEO,
928 .id = AV_CODEC_ID_UTVIDEO,
929 .priv_data_size = sizeof(UtvideoContext),
932 .decode = decode_frame,
933 .capabilities = AV_CODEC_CAP_DR1 | AV_CODEC_CAP_FRAME_THREADS,
934 .caps_internal = FF_CODEC_CAP_INIT_THREADSAFE,