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);
255 for (slice = 0; slice < c->slices; slice++) {
256 GetBitContext cbit, pbit;
259 ret = init_get_bits8(&cbit, c->control_stream[plane_no][slice], c->control_stream_size[plane_no][slice]);
263 ret = init_get_bits8(&pbit, c->packed_stream[plane_no][slice], c->packed_stream_size[plane_no][slice]);
268 send = (height * (slice + 1) / c->slices) & cmask;
269 dest = dst + sstart * stride;
271 for (p = dest; p < dst + send * stride; p += 8) {
272 int bits = get_bits_le(&cbit, 3);
277 uint32_t sub = 0x80 >> (8 - (bits + 1)), add;
280 for (k = 0; k < 8; k++) {
282 p[k] = get_bits_le(&pbit, bits + 1);
283 add = (~p[k] & sub) << (8 - bits);
294 if (build_huff(src, &vlc, &fsym)) {
295 av_log(c->avctx, AV_LOG_ERROR, "Cannot build Huffman codes\n");
296 return AVERROR_INVALIDDATA;
298 if (fsym >= 0) { // build_huff reported a symbol to fill slices with
300 for (slice = 0; slice < c->slices; slice++) {
304 send = (height * (slice + 1) / c->slices) & cmask;
305 dest = dst + sstart * stride;
308 for (j = sstart; j < send; j++) {
309 for (i = 0; i < width; i++) {
326 for (slice = 0; slice < c->slices; slice++) {
328 int slice_data_start, slice_data_end, slice_size;
331 send = (height * (slice + 1) / c->slices) & cmask;
332 dest = dst + sstart * stride;
334 // slice offset and size validation was done earlier
335 slice_data_start = slice ? AV_RL32(src + slice * 4 - 4) : 0;
336 slice_data_end = AV_RL32(src + slice * 4);
337 slice_size = slice_data_end - slice_data_start;
340 av_log(c->avctx, AV_LOG_ERROR, "Plane has more than one symbol "
341 "yet a slice has a length of zero.\n");
345 memset(c->slice_bits + slice_size, 0, AV_INPUT_BUFFER_PADDING_SIZE);
346 c->bdsp.bswap_buf((uint32_t *) c->slice_bits,
347 (uint32_t *)(src + slice_data_start + c->slices * 4),
348 (slice_data_end - slice_data_start + 3) >> 2);
349 init_get_bits(&gb, c->slice_bits, slice_size * 8);
352 for (j = sstart; j < send; j++) {
353 for (i = 0; i < width; i++) {
354 pix = get_vlc2(&gb, vlc.table, VLC_BITS, 3);
356 av_log(c->avctx, AV_LOG_ERROR, "Decoding error\n");
365 if (get_bits_left(&gb) < 0) {
366 av_log(c->avctx, AV_LOG_ERROR,
367 "Slice decoding ran out of bits\n");
372 if (get_bits_left(&gb) > 32)
373 av_log(c->avctx, AV_LOG_WARNING,
374 "%d bits left after decoding slice\n", get_bits_left(&gb));
382 return AVERROR_INVALIDDATA;
389 static void restore_median_planar(UtvideoContext *c, uint8_t *src, ptrdiff_t stride,
390 int width, int height, int slices, int rmode)
395 int slice_start, slice_height;
396 const int cmask = ~rmode;
398 for (slice = 0; slice < slices; slice++) {
399 slice_start = ((slice * height) / slices) & cmask;
400 slice_height = ((((slice + 1) * height) / slices) & cmask) -
405 bsrc = src + slice_start * stride;
407 // first line - left neighbour prediction
409 c->llviddsp.add_left_pred(bsrc, bsrc, width, 0);
411 if (slice_height <= 1)
413 // second line - first element has top prediction, the rest uses median
417 for (i = 1; i < FFMIN(width, 16); i++) { /* scalar loop (DSP need align 16) */
418 B = bsrc[i - stride];
419 bsrc[i] += mid_pred(A, B, (uint8_t)(A + B - C));
424 c->llviddsp.add_median_pred(bsrc + 16, bsrc - stride + 16,
425 bsrc + 16, width - 16, &A, &B);
428 // the rest of lines use continuous median prediction
429 for (j = 2; j < slice_height; j++) {
430 c->llviddsp.add_median_pred(bsrc, bsrc - stride,
431 bsrc, width, &A, &B);
437 /* UtVideo interlaced mode treats every two lines as a single one,
438 * so restoring function should take care of possible padding between
439 * two parts of the same "line".
441 static void restore_median_planar_il(UtvideoContext *c, uint8_t *src, ptrdiff_t stride,
442 int width, int height, int slices, int rmode)
447 int slice_start, slice_height;
448 const int cmask = ~(rmode ? 3 : 1);
449 const ptrdiff_t stride2 = stride << 1;
451 for (slice = 0; slice < slices; slice++) {
452 slice_start = ((slice * height) / slices) & cmask;
453 slice_height = ((((slice + 1) * height) / slices) & cmask) -
459 bsrc = src + slice_start * stride;
461 // first line - left neighbour prediction
463 A = c->llviddsp.add_left_pred(bsrc, bsrc, width, 0);
464 c->llviddsp.add_left_pred(bsrc + stride, bsrc + stride, width, A);
466 if (slice_height <= 1)
468 // second line - first element has top prediction, the rest uses median
472 for (i = 1; i < FFMIN(width, 16); i++) { /* scalar loop (DSP need align 16) */
473 B = bsrc[i - stride2];
474 bsrc[i] += mid_pred(A, B, (uint8_t)(A + B - C));
479 c->llviddsp.add_median_pred(bsrc + 16, bsrc - stride2 + 16,
480 bsrc + 16, width - 16, &A, &B);
482 c->llviddsp.add_median_pred(bsrc + stride, bsrc - stride,
483 bsrc + stride, width, &A, &B);
485 // the rest of lines use continuous median prediction
486 for (j = 2; j < slice_height; j++) {
487 c->llviddsp.add_median_pred(bsrc, bsrc - stride2,
488 bsrc, width, &A, &B);
489 c->llviddsp.add_median_pred(bsrc + stride, bsrc - stride,
490 bsrc + stride, width, &A, &B);
496 static void restore_gradient_planar(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;
504 int min_width = FFMIN(width, 32);
506 for (slice = 0; slice < slices; slice++) {
507 slice_start = ((slice * height) / slices) & cmask;
508 slice_height = ((((slice + 1) * height) / slices) & cmask) -
513 bsrc = src + slice_start * stride;
515 // first line - left neighbour prediction
517 c->llviddsp.add_left_pred(bsrc, bsrc, width, 0);
519 if (slice_height <= 1)
521 for (j = 1; j < slice_height; j++) {
522 // second line - first element has top prediction, the rest uses gradient
523 bsrc[0] = (bsrc[0] + bsrc[-stride]) & 0xFF;
524 for (i = 1; i < min_width; i++) { /* dsp need align 32 */
525 A = bsrc[i - stride];
526 B = bsrc[i - (stride + 1)];
528 bsrc[i] = (A - B + C + bsrc[i]) & 0xFF;
531 c->llviddsp.add_gradient_pred(bsrc + 32, stride, width - 32);
537 static void restore_gradient_planar_il(UtvideoContext *c, uint8_t *src, ptrdiff_t stride,
538 int width, int height, int slices, int rmode)
543 int slice_start, slice_height;
544 const int cmask = ~(rmode ? 3 : 1);
545 const ptrdiff_t stride2 = stride << 1;
546 int min_width = FFMIN(width, 32);
548 for (slice = 0; slice < slices; slice++) {
549 slice_start = ((slice * height) / slices) & cmask;
550 slice_height = ((((slice + 1) * height) / slices) & cmask) -
556 bsrc = src + slice_start * stride;
558 // first line - left neighbour prediction
560 A = c->llviddsp.add_left_pred(bsrc, bsrc, width, 0);
561 c->llviddsp.add_left_pred(bsrc + stride, bsrc + stride, width, A);
563 if (slice_height <= 1)
565 for (j = 1; j < slice_height; j++) {
566 // second line - first element has top prediction, the rest uses gradient
567 bsrc[0] = (bsrc[0] + bsrc[-stride2]) & 0xFF;
568 for (i = 1; i < min_width; i++) { /* dsp need align 32 */
569 A = bsrc[i - stride2];
570 B = bsrc[i - (stride2 + 1)];
572 bsrc[i] = (A - B + C + bsrc[i]) & 0xFF;
575 c->llviddsp.add_gradient_pred(bsrc + 32, stride2, width - 32);
578 B = bsrc[-(1 + stride + stride - width)];
580 bsrc[stride] = (A - B + C + bsrc[stride]) & 0xFF;
581 for (i = 1; i < width; i++) {
582 A = bsrc[i - stride];
583 B = bsrc[i - (1 + stride)];
584 C = bsrc[i - 1 + stride];
585 bsrc[i + stride] = (A - B + C + bsrc[i + stride]) & 0xFF;
592 static int decode_frame(AVCodecContext *avctx, void *data, int *got_frame,
595 const uint8_t *buf = avpkt->data;
596 int buf_size = avpkt->size;
597 UtvideoContext *c = avctx->priv_data;
599 const uint8_t *plane_start[5];
600 int plane_size, max_slice_size = 0, slice_start, slice_end, slice_size;
603 ThreadFrame frame = { .f = data };
605 if ((ret = ff_thread_get_buffer(avctx, &frame, 0)) < 0)
608 /* parse plane structure to get frame flags and validate slice offsets */
609 bytestream2_init(&gb, buf, buf_size);
612 const uint8_t *packed_stream;
613 const uint8_t *control_stream;
618 c->frame_info = PRED_GRADIENT << 8;
620 if (bytestream2_get_byte(&gb) != 1)
621 return AVERROR_INVALIDDATA;
622 bytestream2_skip(&gb, 3);
623 c->offset = bytestream2_get_le32(&gb);
625 if (buf_size <= c->offset + 8LL)
626 return AVERROR_INVALIDDATA;
628 bytestream2_init(&pb, buf + 8 + c->offset, buf_size - 8 - c->offset);
630 nb_cbs = bytestream2_get_le32(&pb);
631 if (nb_cbs > c->offset)
632 return AVERROR_INVALIDDATA;
634 packed_stream = buf + 8;
635 control_stream = packed_stream + (c->offset - nb_cbs);
636 left = control_stream - packed_stream;
638 for (i = 0; i < c->planes; i++) {
639 for (j = 0; j < c->slices; j++) {
640 c->packed_stream[i][j] = packed_stream;
641 c->packed_stream_size[i][j] = bytestream2_get_le32(&pb);
642 left -= c->packed_stream_size[i][j];
644 return AVERROR_INVALIDDATA;
645 packed_stream += c->packed_stream_size[i][j];
649 left = buf + buf_size - control_stream;
651 for (i = 0; i < c->planes; i++) {
652 for (j = 0; j < c->slices; j++) {
653 c->control_stream[i][j] = control_stream;
654 c->control_stream_size[i][j] = bytestream2_get_le32(&pb);
655 left -= c->control_stream_size[i][j];
657 return AVERROR_INVALIDDATA;
658 control_stream += c->control_stream_size[i][j];
662 if (bytestream2_get_bytes_left(&gb) < c->frame_info_size) {
663 av_log(avctx, AV_LOG_ERROR, "Not enough data for frame information\n");
664 return AVERROR_INVALIDDATA;
666 c->frame_info = bytestream2_get_le32u(&gb);
667 c->slices = ((c->frame_info >> 16) & 0xff) + 1;
668 for (i = 0; i < c->planes; i++) {
669 plane_start[i] = gb.buffer;
670 if (bytestream2_get_bytes_left(&gb) < 1024 + 4 * c->slices) {
671 av_log(avctx, AV_LOG_ERROR, "Insufficient data for a plane\n");
672 return AVERROR_INVALIDDATA;
676 for (j = 0; j < c->slices; j++) {
677 slice_end = bytestream2_get_le32u(&gb);
678 if (slice_end < 0 || slice_end < slice_start ||
679 bytestream2_get_bytes_left(&gb) < slice_end) {
680 av_log(avctx, AV_LOG_ERROR, "Incorrect slice size\n");
681 return AVERROR_INVALIDDATA;
683 slice_size = slice_end - slice_start;
684 slice_start = slice_end;
685 max_slice_size = FFMAX(max_slice_size, slice_size);
687 plane_size = slice_end;
688 bytestream2_skipu(&gb, plane_size);
689 bytestream2_skipu(&gb, 1024);
691 plane_start[c->planes] = gb.buffer;
693 for (i = 0; i < c->planes; i++) {
694 plane_start[i] = gb.buffer;
695 if (bytestream2_get_bytes_left(&gb) < 256 + 4 * c->slices) {
696 av_log(avctx, AV_LOG_ERROR, "Insufficient data for a plane\n");
697 return AVERROR_INVALIDDATA;
699 bytestream2_skipu(&gb, 256);
702 for (j = 0; j < c->slices; j++) {
703 slice_end = bytestream2_get_le32u(&gb);
704 if (slice_end < 0 || slice_end < slice_start ||
705 bytestream2_get_bytes_left(&gb) < slice_end) {
706 av_log(avctx, AV_LOG_ERROR, "Incorrect slice size\n");
707 return AVERROR_INVALIDDATA;
709 slice_size = slice_end - slice_start;
710 slice_start = slice_end;
711 max_slice_size = FFMAX(max_slice_size, slice_size);
713 plane_size = slice_end;
714 bytestream2_skipu(&gb, plane_size);
716 plane_start[c->planes] = gb.buffer;
717 if (bytestream2_get_bytes_left(&gb) < c->frame_info_size) {
718 av_log(avctx, AV_LOG_ERROR, "Not enough data for frame information\n");
719 return AVERROR_INVALIDDATA;
721 c->frame_info = bytestream2_get_le32u(&gb);
723 av_log(avctx, AV_LOG_DEBUG, "frame information flags %"PRIX32"\n",
726 c->frame_pred = (c->frame_info >> 8) & 3;
728 max_slice_size += 4*avctx->width;
731 av_fast_malloc(&c->slice_bits, &c->slice_bits_size,
732 max_slice_size + AV_INPUT_BUFFER_PADDING_SIZE);
734 if (!c->slice_bits) {
735 av_log(avctx, AV_LOG_ERROR, "Cannot allocate temporary buffer\n");
736 return AVERROR(ENOMEM);
740 switch (c->avctx->pix_fmt) {
741 case AV_PIX_FMT_GBRP:
742 case AV_PIX_FMT_GBRAP:
743 for (i = 0; i < c->planes; i++) {
744 ret = decode_plane(c, i, frame.f->data[i],
745 frame.f->linesize[i], avctx->width,
746 avctx->height, plane_start[i],
747 c->frame_pred == PRED_LEFT);
750 if (c->frame_pred == PRED_MEDIAN) {
751 if (!c->interlaced) {
752 restore_median_planar(c, frame.f->data[i],
753 frame.f->linesize[i], avctx->width,
754 avctx->height, c->slices, 0);
756 restore_median_planar_il(c, frame.f->data[i],
757 frame.f->linesize[i],
758 avctx->width, avctx->height, c->slices,
761 } else if (c->frame_pred == PRED_GRADIENT) {
762 if (!c->interlaced) {
763 restore_gradient_planar(c, frame.f->data[i],
764 frame.f->linesize[i], avctx->width,
765 avctx->height, c->slices, 0);
767 restore_gradient_planar_il(c, frame.f->data[i],
768 frame.f->linesize[i],
769 avctx->width, avctx->height, c->slices,
774 c->utdsp.restore_rgb_planes(frame.f->data[2], frame.f->data[0], frame.f->data[1],
775 frame.f->linesize[2], frame.f->linesize[0], frame.f->linesize[1],
776 avctx->width, avctx->height);
778 case AV_PIX_FMT_GBRAP10:
779 case AV_PIX_FMT_GBRP10:
780 for (i = 0; i < c->planes; i++) {
781 ret = decode_plane10(c, i, (uint16_t *)frame.f->data[i],
782 frame.f->linesize[i] / 2, avctx->width,
783 avctx->height, plane_start[i],
784 plane_start[i + 1] - 1024,
785 c->frame_pred == PRED_LEFT);
789 c->utdsp.restore_rgb_planes10((uint16_t *)frame.f->data[2], (uint16_t *)frame.f->data[0], (uint16_t *)frame.f->data[1],
790 frame.f->linesize[2] / 2, frame.f->linesize[0] / 2, frame.f->linesize[1] / 2,
791 avctx->width, avctx->height);
793 case AV_PIX_FMT_YUV420P:
794 for (i = 0; i < 3; i++) {
795 ret = decode_plane(c, i, frame.f->data[i], frame.f->linesize[i],
796 avctx->width >> !!i, avctx->height >> !!i,
797 plane_start[i], c->frame_pred == PRED_LEFT);
800 if (c->frame_pred == PRED_MEDIAN) {
801 if (!c->interlaced) {
802 restore_median_planar(c, frame.f->data[i], frame.f->linesize[i],
803 avctx->width >> !!i, avctx->height >> !!i,
806 restore_median_planar_il(c, frame.f->data[i], frame.f->linesize[i],
808 avctx->height >> !!i,
811 } else if (c->frame_pred == PRED_GRADIENT) {
812 if (!c->interlaced) {
813 restore_gradient_planar(c, frame.f->data[i], frame.f->linesize[i],
814 avctx->width >> !!i, avctx->height >> !!i,
817 restore_gradient_planar_il(c, frame.f->data[i], frame.f->linesize[i],
819 avctx->height >> !!i,
825 case AV_PIX_FMT_YUV422P:
826 for (i = 0; i < 3; i++) {
827 ret = decode_plane(c, i, frame.f->data[i], frame.f->linesize[i],
828 avctx->width >> !!i, avctx->height,
829 plane_start[i], c->frame_pred == PRED_LEFT);
832 if (c->frame_pred == PRED_MEDIAN) {
833 if (!c->interlaced) {
834 restore_median_planar(c, frame.f->data[i], frame.f->linesize[i],
835 avctx->width >> !!i, avctx->height,
838 restore_median_planar_il(c, frame.f->data[i], frame.f->linesize[i],
839 avctx->width >> !!i, avctx->height,
842 } else if (c->frame_pred == PRED_GRADIENT) {
843 if (!c->interlaced) {
844 restore_gradient_planar(c, frame.f->data[i], frame.f->linesize[i],
845 avctx->width >> !!i, avctx->height,
848 restore_gradient_planar_il(c, frame.f->data[i], frame.f->linesize[i],
849 avctx->width >> !!i, avctx->height,
855 case AV_PIX_FMT_YUV444P:
856 for (i = 0; i < 3; i++) {
857 ret = decode_plane(c, i, frame.f->data[i], frame.f->linesize[i],
858 avctx->width, avctx->height,
859 plane_start[i], c->frame_pred == PRED_LEFT);
862 if (c->frame_pred == PRED_MEDIAN) {
863 if (!c->interlaced) {
864 restore_median_planar(c, frame.f->data[i], frame.f->linesize[i],
865 avctx->width, avctx->height,
868 restore_median_planar_il(c, frame.f->data[i], frame.f->linesize[i],
869 avctx->width, avctx->height,
872 } else if (c->frame_pred == PRED_GRADIENT) {
873 if (!c->interlaced) {
874 restore_gradient_planar(c, frame.f->data[i], frame.f->linesize[i],
875 avctx->width, avctx->height,
878 restore_gradient_planar_il(c, frame.f->data[i], frame.f->linesize[i],
879 avctx->width, avctx->height,
885 case AV_PIX_FMT_YUV422P10:
886 for (i = 0; i < 3; i++) {
887 ret = decode_plane10(c, i, (uint16_t *)frame.f->data[i], frame.f->linesize[i] / 2,
888 avctx->width >> !!i, avctx->height,
889 plane_start[i], plane_start[i + 1] - 1024, c->frame_pred == PRED_LEFT);
896 frame.f->key_frame = 1;
897 frame.f->pict_type = AV_PICTURE_TYPE_I;
898 frame.f->interlaced_frame = !!c->interlaced;
902 /* always report that the buffer was completely consumed */
906 static av_cold int decode_init(AVCodecContext *avctx)
908 UtvideoContext * const c = avctx->priv_data;
912 ff_utvideodsp_init(&c->utdsp);
913 ff_bswapdsp_init(&c->bdsp);
914 ff_llviddsp_init(&c->llviddsp);
916 c->slice_bits_size = 0;
918 switch (avctx->codec_tag) {
919 case MKTAG('U', 'L', 'R', 'G'):
921 avctx->pix_fmt = AV_PIX_FMT_GBRP;
923 case MKTAG('U', 'L', 'R', 'A'):
925 avctx->pix_fmt = AV_PIX_FMT_GBRAP;
927 case MKTAG('U', 'L', 'Y', '0'):
929 avctx->pix_fmt = AV_PIX_FMT_YUV420P;
930 avctx->colorspace = AVCOL_SPC_BT470BG;
932 case MKTAG('U', 'L', 'Y', '2'):
934 avctx->pix_fmt = AV_PIX_FMT_YUV422P;
935 avctx->colorspace = AVCOL_SPC_BT470BG;
937 case MKTAG('U', 'L', 'Y', '4'):
939 avctx->pix_fmt = AV_PIX_FMT_YUV444P;
940 avctx->colorspace = AVCOL_SPC_BT470BG;
942 case MKTAG('U', 'Q', 'Y', '2'):
944 avctx->pix_fmt = AV_PIX_FMT_YUV422P10;
946 case MKTAG('U', 'Q', 'R', 'G'):
948 avctx->pix_fmt = AV_PIX_FMT_GBRP10;
950 case MKTAG('U', 'Q', 'R', 'A'):
952 avctx->pix_fmt = AV_PIX_FMT_GBRAP10;
954 case MKTAG('U', 'L', 'H', '0'):
956 avctx->pix_fmt = AV_PIX_FMT_YUV420P;
957 avctx->colorspace = AVCOL_SPC_BT709;
959 case MKTAG('U', 'L', 'H', '2'):
961 avctx->pix_fmt = AV_PIX_FMT_YUV422P;
962 avctx->colorspace = AVCOL_SPC_BT709;
964 case MKTAG('U', 'L', 'H', '4'):
966 avctx->pix_fmt = AV_PIX_FMT_YUV444P;
967 avctx->colorspace = AVCOL_SPC_BT709;
969 case MKTAG('U', 'M', 'Y', '2'):
972 avctx->pix_fmt = AV_PIX_FMT_YUV422P;
973 avctx->colorspace = AVCOL_SPC_BT470BG;
975 case MKTAG('U', 'M', 'H', '2'):
978 avctx->pix_fmt = AV_PIX_FMT_YUV422P;
979 avctx->colorspace = AVCOL_SPC_BT709;
981 case MKTAG('U', 'M', 'Y', '4'):
984 avctx->pix_fmt = AV_PIX_FMT_YUV444P;
985 avctx->colorspace = AVCOL_SPC_BT470BG;
987 case MKTAG('U', 'M', 'H', '4'):
990 avctx->pix_fmt = AV_PIX_FMT_YUV444P;
991 avctx->colorspace = AVCOL_SPC_BT709;
993 case MKTAG('U', 'M', 'R', 'G'):
996 avctx->pix_fmt = AV_PIX_FMT_GBRP;
998 case MKTAG('U', 'M', 'R', 'A'):
1001 avctx->pix_fmt = AV_PIX_FMT_GBRAP;
1004 av_log(avctx, AV_LOG_ERROR, "Unknown Ut Video FOURCC provided (%08X)\n",
1006 return AVERROR_INVALIDDATA;
1009 if (c->pack && avctx->extradata_size >= 16) {
1010 av_log(avctx, AV_LOG_DEBUG, "Encoder version %d.%d.%d.%d\n",
1011 avctx->extradata[3], avctx->extradata[2],
1012 avctx->extradata[1], avctx->extradata[0]);
1013 av_log(avctx, AV_LOG_DEBUG, "Original format %"PRIX32"\n",
1014 AV_RB32(avctx->extradata + 4));
1015 c->compression = avctx->extradata[8];
1016 if (c->compression != 2)
1017 avpriv_request_sample(avctx, "Unknown compression type");
1018 c->slices = avctx->extradata[9] + 1;
1019 } else if (avctx->extradata_size >= 16) {
1020 av_log(avctx, AV_LOG_DEBUG, "Encoder version %d.%d.%d.%d\n",
1021 avctx->extradata[3], avctx->extradata[2],
1022 avctx->extradata[1], avctx->extradata[0]);
1023 av_log(avctx, AV_LOG_DEBUG, "Original format %"PRIX32"\n",
1024 AV_RB32(avctx->extradata + 4));
1025 c->frame_info_size = AV_RL32(avctx->extradata + 8);
1026 c->flags = AV_RL32(avctx->extradata + 12);
1028 if (c->frame_info_size != 4)
1029 avpriv_request_sample(avctx, "Frame info not 4 bytes");
1030 av_log(avctx, AV_LOG_DEBUG, "Encoding parameters %08"PRIX32"\n", c->flags);
1031 c->slices = (c->flags >> 24) + 1;
1032 c->compression = c->flags & 1;
1033 c->interlaced = c->flags & 0x800;
1034 } else if (avctx->extradata_size == 8) {
1035 av_log(avctx, AV_LOG_DEBUG, "Encoder version %d.%d.%d.%d\n",
1036 avctx->extradata[3], avctx->extradata[2],
1037 avctx->extradata[1], avctx->extradata[0]);
1038 av_log(avctx, AV_LOG_DEBUG, "Original format %"PRIX32"\n",
1039 AV_RB32(avctx->extradata + 4));
1042 c->frame_info_size = 4;
1044 av_log(avctx, AV_LOG_ERROR,
1045 "Insufficient extradata size %d, should be at least 16\n",
1046 avctx->extradata_size);
1047 return AVERROR_INVALIDDATA;
1053 static av_cold int decode_end(AVCodecContext *avctx)
1055 UtvideoContext * const c = avctx->priv_data;
1057 av_freep(&c->slice_bits);
1062 AVCodec ff_utvideo_decoder = {
1064 .long_name = NULL_IF_CONFIG_SMALL("Ut Video"),
1065 .type = AVMEDIA_TYPE_VIDEO,
1066 .id = AV_CODEC_ID_UTVIDEO,
1067 .priv_data_size = sizeof(UtvideoContext),
1068 .init = decode_init,
1069 .close = decode_end,
1070 .decode = decode_frame,
1071 .capabilities = AV_CODEC_CAP_DR1 | AV_CODEC_CAP_FRAME_THREADS,
1072 .caps_internal = FF_CODEC_CAP_INIT_THREADSAFE,