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 CACHED_BITSTREAM_READER !ARCH_X86_32
31 #define UNCHECKED_BITSTREAM_READER 1
33 #include "libavutil/intreadwrite.h"
34 #include "libavutil/pixdesc.h"
37 #include "bytestream.h"
43 static int build_huff(const uint8_t *src, VLC *vlc, int *fsym, unsigned nb_elems)
48 uint16_t codes_count[33] = { 0 };
51 for (i = 0; i < nb_elems; i++) {
55 } else if (src[i] == 255) {
57 } else if (src[i] <= 32) {
60 return AVERROR_INVALIDDATA;
62 codes_count[bits[i]]++;
64 if (codes_count[0] == nb_elems)
65 return AVERROR_INVALIDDATA;
67 for (unsigned i = 32, nb_codes = 0; i > 0; i--) {
68 uint16_t curr = codes_count[i]; // # of leafs of length i
69 codes_count[i] = nb_codes / 2; // # of non-leaf nodes on level i
70 nb_codes = codes_count[i] + curr; // # of nodes on level i
73 for (unsigned i = nb_elems; i-- > 0;) {
78 codes[i] = codes_count[bits[i]]++;
81 return init_vlc(vlc, VLC_BITS, nb_elems,
82 bits, sizeof(*bits), sizeof(*bits),
83 codes, sizeof(*codes), sizeof(*codes), 0);
86 static int decode_plane10(UtvideoContext *c, int plane_no,
87 uint16_t *dst, ptrdiff_t stride,
88 int width, int height,
89 const uint8_t *src, const uint8_t *huff,
92 int i, j, slice, pix, ret;
98 if ((ret = build_huff(huff, &vlc, &fsym, 1024)) < 0) {
99 av_log(c->avctx, AV_LOG_ERROR, "Cannot build Huffman codes\n");
102 if (fsym >= 0) { // build_huff reported a symbol to fill slices with
104 for (slice = 0; slice < c->slices; slice++) {
108 send = (height * (slice + 1) / c->slices);
109 dest = dst + sstart * stride;
112 for (j = sstart; j < send; j++) {
113 for (i = 0; i < width; i++) {
129 for (slice = 0; slice < c->slices; slice++) {
131 int slice_data_start, slice_data_end, slice_size;
134 send = (height * (slice + 1) / c->slices);
135 dest = dst + sstart * stride;
137 // slice offset and size validation was done earlier
138 slice_data_start = slice ? AV_RL32(src + slice * 4 - 4) : 0;
139 slice_data_end = AV_RL32(src + slice * 4);
140 slice_size = slice_data_end - slice_data_start;
143 av_log(c->avctx, AV_LOG_ERROR, "Plane has more than one symbol "
144 "yet a slice has a length of zero.\n");
148 memset(c->slice_bits + slice_size, 0, AV_INPUT_BUFFER_PADDING_SIZE);
149 c->bdsp.bswap_buf((uint32_t *) c->slice_bits,
150 (uint32_t *)(src + slice_data_start + c->slices * 4),
151 (slice_data_end - slice_data_start + 3) >> 2);
152 init_get_bits(&gb, c->slice_bits, slice_size * 8);
155 for (j = sstart; j < send; j++) {
156 for (i = 0; i < width; i++) {
157 pix = get_vlc2(&gb, vlc.table, VLC_BITS, 3);
159 av_log(c->avctx, AV_LOG_ERROR, "Decoding error\n");
170 if (get_bits_left(&gb) < 0) {
171 av_log(c->avctx, AV_LOG_ERROR,
172 "Slice decoding ran out of bits\n");
176 if (get_bits_left(&gb) > 32)
177 av_log(c->avctx, AV_LOG_WARNING,
178 "%d bits left after decoding slice\n", get_bits_left(&gb));
186 return AVERROR_INVALIDDATA;
189 static int compute_cmask(int plane_no, int interlaced, enum AVPixelFormat pix_fmt)
191 const int is_luma = (pix_fmt == AV_PIX_FMT_YUV420P) && !plane_no;
194 return ~(1 + 2 * is_luma);
199 static int decode_plane(UtvideoContext *c, int plane_no,
200 uint8_t *dst, ptrdiff_t stride,
201 int width, int height,
202 const uint8_t *src, int use_pred)
204 int i, j, slice, pix;
209 const int cmask = compute_cmask(plane_no, c->interlaced, c->avctx->pix_fmt);
213 for (slice = 0; slice < c->slices; slice++) {
214 GetBitContext cbit, pbit;
217 ret = init_get_bits8_le(&cbit, c->control_stream[plane_no][slice], c->control_stream_size[plane_no][slice]);
221 ret = init_get_bits8_le(&pbit, c->packed_stream[plane_no][slice], c->packed_stream_size[plane_no][slice]);
226 send = (height * (slice + 1) / c->slices) & cmask;
227 dest = dst + sstart * stride;
229 if (3 * ((dst + send * stride - dest + 7)/8) > get_bits_left(&cbit))
230 return AVERROR_INVALIDDATA;
232 for (p = dest; p < dst + send * stride; p += 8) {
233 int bits = get_bits_le(&cbit, 3);
238 uint32_t sub = 0x80 >> (8 - (bits + 1)), add;
241 if ((bits + 1) * 8 > get_bits_left(&pbit))
242 return AVERROR_INVALIDDATA;
244 for (k = 0; k < 8; k++) {
246 p[k] = get_bits_le(&pbit, bits + 1);
247 add = (~p[k] & sub) << (8 - bits);
258 if (build_huff(src, &vlc, &fsym, 256)) {
259 av_log(c->avctx, AV_LOG_ERROR, "Cannot build Huffman codes\n");
260 return AVERROR_INVALIDDATA;
262 if (fsym >= 0) { // build_huff reported a symbol to fill slices with
264 for (slice = 0; slice < c->slices; slice++) {
268 send = (height * (slice + 1) / c->slices) & cmask;
269 dest = dst + sstart * stride;
272 for (j = sstart; j < send; j++) {
273 for (i = 0; i < width; i++) {
276 prev += (unsigned)pix;
290 for (slice = 0; slice < c->slices; slice++) {
292 int slice_data_start, slice_data_end, slice_size;
295 send = (height * (slice + 1) / c->slices) & cmask;
296 dest = dst + sstart * stride;
298 // slice offset and size validation was done earlier
299 slice_data_start = slice ? AV_RL32(src + slice * 4 - 4) : 0;
300 slice_data_end = AV_RL32(src + slice * 4);
301 slice_size = slice_data_end - slice_data_start;
304 av_log(c->avctx, AV_LOG_ERROR, "Plane has more than one symbol "
305 "yet a slice has a length of zero.\n");
309 memset(c->slice_bits + slice_size, 0, AV_INPUT_BUFFER_PADDING_SIZE);
310 c->bdsp.bswap_buf((uint32_t *) c->slice_bits,
311 (uint32_t *)(src + slice_data_start + c->slices * 4),
312 (slice_data_end - slice_data_start + 3) >> 2);
313 init_get_bits(&gb, c->slice_bits, slice_size * 8);
316 for (j = sstart; j < send; j++) {
317 for (i = 0; i < width; i++) {
318 pix = get_vlc2(&gb, vlc.table, VLC_BITS, 3);
320 av_log(c->avctx, AV_LOG_ERROR, "Decoding error\n");
329 if (get_bits_left(&gb) < 0) {
330 av_log(c->avctx, AV_LOG_ERROR,
331 "Slice decoding ran out of bits\n");
336 if (get_bits_left(&gb) > 32)
337 av_log(c->avctx, AV_LOG_WARNING,
338 "%d bits left after decoding slice\n", get_bits_left(&gb));
346 return AVERROR_INVALIDDATA;
353 static void restore_median_planar(UtvideoContext *c, uint8_t *src, ptrdiff_t stride,
354 int width, int height, int slices, int rmode)
359 int slice_start, slice_height;
360 const int cmask = ~rmode;
362 for (slice = 0; slice < slices; slice++) {
363 slice_start = ((slice * height) / slices) & cmask;
364 slice_height = ((((slice + 1) * height) / slices) & cmask) -
369 bsrc = src + slice_start * stride;
371 // first line - left neighbour prediction
373 c->llviddsp.add_left_pred(bsrc, bsrc, width, 0);
375 if (slice_height <= 1)
377 // second line - first element has top prediction, the rest uses median
381 for (i = 1; i < FFMIN(width, 16); i++) { /* scalar loop (DSP need align 16) */
382 B = bsrc[i - stride];
383 bsrc[i] += mid_pred(A, B, (uint8_t)(A + B - C));
388 c->llviddsp.add_median_pred(bsrc + 16, bsrc - stride + 16,
389 bsrc + 16, width - 16, &A, &B);
392 // the rest of lines use continuous median prediction
393 for (j = 2; j < slice_height; j++) {
394 c->llviddsp.add_median_pred(bsrc, bsrc - stride,
395 bsrc, width, &A, &B);
401 /* UtVideo interlaced mode treats every two lines as a single one,
402 * so restoring function should take care of possible padding between
403 * two parts of the same "line".
405 static void restore_median_planar_il(UtvideoContext *c, uint8_t *src, ptrdiff_t stride,
406 int width, int height, int slices, int rmode)
411 int slice_start, slice_height;
412 const int cmask = ~(rmode ? 3 : 1);
413 const ptrdiff_t stride2 = stride << 1;
415 for (slice = 0; slice < slices; slice++) {
416 slice_start = ((slice * height) / slices) & cmask;
417 slice_height = ((((slice + 1) * height) / slices) & cmask) -
423 bsrc = src + slice_start * stride;
425 // first line - left neighbour prediction
427 A = c->llviddsp.add_left_pred(bsrc, bsrc, width, 0);
428 c->llviddsp.add_left_pred(bsrc + stride, bsrc + stride, width, A);
430 if (slice_height <= 1)
432 // second line - first element has top prediction, the rest uses median
436 for (i = 1; i < FFMIN(width, 16); i++) { /* scalar loop (DSP need align 16) */
437 B = bsrc[i - stride2];
438 bsrc[i] += mid_pred(A, B, (uint8_t)(A + B - C));
443 c->llviddsp.add_median_pred(bsrc + 16, bsrc - stride2 + 16,
444 bsrc + 16, width - 16, &A, &B);
446 c->llviddsp.add_median_pred(bsrc + stride, bsrc - stride,
447 bsrc + stride, width, &A, &B);
449 // the rest of lines use continuous median prediction
450 for (j = 2; j < slice_height; j++) {
451 c->llviddsp.add_median_pred(bsrc, bsrc - stride2,
452 bsrc, width, &A, &B);
453 c->llviddsp.add_median_pred(bsrc + stride, bsrc - stride,
454 bsrc + stride, width, &A, &B);
460 static void restore_gradient_planar(UtvideoContext *c, uint8_t *src, ptrdiff_t stride,
461 int width, int height, int slices, int rmode)
466 int slice_start, slice_height;
467 const int cmask = ~rmode;
468 int min_width = FFMIN(width, 32);
470 for (slice = 0; slice < slices; slice++) {
471 slice_start = ((slice * height) / slices) & cmask;
472 slice_height = ((((slice + 1) * height) / slices) & cmask) -
477 bsrc = src + slice_start * stride;
479 // first line - left neighbour prediction
481 c->llviddsp.add_left_pred(bsrc, bsrc, width, 0);
483 if (slice_height <= 1)
485 for (j = 1; j < slice_height; j++) {
486 // second line - first element has top prediction, the rest uses gradient
487 bsrc[0] = (bsrc[0] + bsrc[-stride]) & 0xFF;
488 for (i = 1; i < min_width; i++) { /* dsp need align 32 */
489 A = bsrc[i - stride];
490 B = bsrc[i - (stride + 1)];
492 bsrc[i] = (A - B + C + bsrc[i]) & 0xFF;
495 c->llviddsp.add_gradient_pred(bsrc + 32, stride, width - 32);
501 static void restore_gradient_planar_il(UtvideoContext *c, uint8_t *src, ptrdiff_t stride,
502 int width, int height, int slices, int rmode)
507 int slice_start, slice_height;
508 const int cmask = ~(rmode ? 3 : 1);
509 const ptrdiff_t stride2 = stride << 1;
510 int min_width = FFMIN(width, 32);
512 for (slice = 0; slice < slices; slice++) {
513 slice_start = ((slice * height) / slices) & cmask;
514 slice_height = ((((slice + 1) * height) / slices) & cmask) -
520 bsrc = src + slice_start * stride;
522 // first line - left neighbour prediction
524 A = c->llviddsp.add_left_pred(bsrc, bsrc, width, 0);
525 c->llviddsp.add_left_pred(bsrc + stride, bsrc + stride, width, A);
527 if (slice_height <= 1)
529 for (j = 1; j < slice_height; j++) {
530 // second line - first element has top prediction, the rest uses gradient
531 bsrc[0] = (bsrc[0] + bsrc[-stride2]) & 0xFF;
532 for (i = 1; i < min_width; i++) { /* dsp need align 32 */
533 A = bsrc[i - stride2];
534 B = bsrc[i - (stride2 + 1)];
536 bsrc[i] = (A - B + C + bsrc[i]) & 0xFF;
539 c->llviddsp.add_gradient_pred(bsrc + 32, stride2, width - 32);
542 B = bsrc[-(1 + stride + stride - width)];
544 bsrc[stride] = (A - B + C + bsrc[stride]) & 0xFF;
545 for (i = 1; i < width; i++) {
546 A = bsrc[i - stride];
547 B = bsrc[i - (1 + stride)];
548 C = bsrc[i - 1 + stride];
549 bsrc[i + stride] = (A - B + C + bsrc[i + stride]) & 0xFF;
556 static int decode_frame(AVCodecContext *avctx, void *data, int *got_frame,
559 const uint8_t *buf = avpkt->data;
560 int buf_size = avpkt->size;
561 UtvideoContext *c = avctx->priv_data;
563 const uint8_t *plane_start[5];
564 int plane_size, max_slice_size = 0, slice_start, slice_end, slice_size;
567 ThreadFrame frame = { .f = data };
569 if ((ret = ff_thread_get_buffer(avctx, &frame, 0)) < 0)
572 /* parse plane structure to get frame flags and validate slice offsets */
573 bytestream2_init(&gb, buf, buf_size);
576 const uint8_t *packed_stream;
577 const uint8_t *control_stream;
582 c->frame_info = PRED_GRADIENT << 8;
584 if (bytestream2_get_byte(&gb) != 1)
585 return AVERROR_INVALIDDATA;
586 bytestream2_skip(&gb, 3);
587 c->offset = bytestream2_get_le32(&gb);
589 if (buf_size <= c->offset + 8LL)
590 return AVERROR_INVALIDDATA;
592 bytestream2_init(&pb, buf + 8 + c->offset, buf_size - 8 - c->offset);
594 nb_cbs = bytestream2_get_le32(&pb);
595 if (nb_cbs > c->offset)
596 return AVERROR_INVALIDDATA;
598 packed_stream = buf + 8;
599 control_stream = packed_stream + (c->offset - nb_cbs);
600 left = control_stream - packed_stream;
602 for (i = 0; i < c->planes; i++) {
603 for (j = 0; j < c->slices; j++) {
604 c->packed_stream[i][j] = packed_stream;
605 c->packed_stream_size[i][j] = bytestream2_get_le32(&pb);
606 if (c->packed_stream_size[i][j] > left)
607 return AVERROR_INVALIDDATA;
608 left -= c->packed_stream_size[i][j];
609 packed_stream += c->packed_stream_size[i][j];
613 left = buf + buf_size - control_stream;
615 for (i = 0; i < c->planes; i++) {
616 for (j = 0; j < c->slices; j++) {
617 c->control_stream[i][j] = control_stream;
618 c->control_stream_size[i][j] = bytestream2_get_le32(&pb);
619 if (c->control_stream_size[i][j] > left)
620 return AVERROR_INVALIDDATA;
621 left -= c->control_stream_size[i][j];
622 control_stream += c->control_stream_size[i][j];
626 if (bytestream2_get_bytes_left(&gb) < c->frame_info_size) {
627 av_log(avctx, AV_LOG_ERROR, "Not enough data for frame information\n");
628 return AVERROR_INVALIDDATA;
630 c->frame_info = bytestream2_get_le32u(&gb);
631 c->slices = ((c->frame_info >> 16) & 0xff) + 1;
632 for (i = 0; i < c->planes; i++) {
633 plane_start[i] = gb.buffer;
634 if (bytestream2_get_bytes_left(&gb) < 1024 + 4 * c->slices) {
635 av_log(avctx, AV_LOG_ERROR, "Insufficient data for a plane\n");
636 return AVERROR_INVALIDDATA;
640 for (j = 0; j < c->slices; j++) {
641 slice_end = bytestream2_get_le32u(&gb);
642 if (slice_end < 0 || slice_end < slice_start ||
643 bytestream2_get_bytes_left(&gb) < slice_end + 1024LL) {
644 av_log(avctx, AV_LOG_ERROR, "Incorrect slice size\n");
645 return AVERROR_INVALIDDATA;
647 slice_size = slice_end - slice_start;
648 slice_start = slice_end;
649 max_slice_size = FFMAX(max_slice_size, slice_size);
651 plane_size = slice_end;
652 bytestream2_skipu(&gb, plane_size);
653 bytestream2_skipu(&gb, 1024);
655 plane_start[c->planes] = gb.buffer;
657 for (i = 0; i < c->planes; i++) {
658 plane_start[i] = gb.buffer;
659 if (bytestream2_get_bytes_left(&gb) < 256 + 4 * c->slices) {
660 av_log(avctx, AV_LOG_ERROR, "Insufficient data for a plane\n");
661 return AVERROR_INVALIDDATA;
663 bytestream2_skipu(&gb, 256);
666 for (j = 0; j < c->slices; j++) {
667 slice_end = bytestream2_get_le32u(&gb);
668 if (slice_end < 0 || slice_end < slice_start ||
669 bytestream2_get_bytes_left(&gb) < slice_end) {
670 av_log(avctx, AV_LOG_ERROR, "Incorrect slice size\n");
671 return AVERROR_INVALIDDATA;
673 slice_size = slice_end - slice_start;
674 slice_start = slice_end;
675 max_slice_size = FFMAX(max_slice_size, slice_size);
677 plane_size = slice_end;
678 bytestream2_skipu(&gb, plane_size);
680 plane_start[c->planes] = gb.buffer;
681 if (bytestream2_get_bytes_left(&gb) < c->frame_info_size) {
682 av_log(avctx, AV_LOG_ERROR, "Not enough data for frame information\n");
683 return AVERROR_INVALIDDATA;
685 c->frame_info = bytestream2_get_le32u(&gb);
687 av_log(avctx, AV_LOG_DEBUG, "frame information flags %"PRIX32"\n",
690 c->frame_pred = (c->frame_info >> 8) & 3;
692 max_slice_size += 4*avctx->width;
695 av_fast_malloc(&c->slice_bits, &c->slice_bits_size,
696 max_slice_size + AV_INPUT_BUFFER_PADDING_SIZE);
698 if (!c->slice_bits) {
699 av_log(avctx, AV_LOG_ERROR, "Cannot allocate temporary buffer\n");
700 return AVERROR(ENOMEM);
704 switch (c->avctx->pix_fmt) {
705 case AV_PIX_FMT_GBRP:
706 case AV_PIX_FMT_GBRAP:
707 for (i = 0; i < c->planes; i++) {
708 ret = decode_plane(c, i, frame.f->data[i],
709 frame.f->linesize[i], avctx->width,
710 avctx->height, plane_start[i],
711 c->frame_pred == PRED_LEFT);
714 if (c->frame_pred == PRED_MEDIAN) {
715 if (!c->interlaced) {
716 restore_median_planar(c, frame.f->data[i],
717 frame.f->linesize[i], avctx->width,
718 avctx->height, c->slices, 0);
720 restore_median_planar_il(c, frame.f->data[i],
721 frame.f->linesize[i],
722 avctx->width, avctx->height, c->slices,
725 } else if (c->frame_pred == PRED_GRADIENT) {
726 if (!c->interlaced) {
727 restore_gradient_planar(c, frame.f->data[i],
728 frame.f->linesize[i], avctx->width,
729 avctx->height, c->slices, 0);
731 restore_gradient_planar_il(c, frame.f->data[i],
732 frame.f->linesize[i],
733 avctx->width, avctx->height, c->slices,
738 c->utdsp.restore_rgb_planes(frame.f->data[2], frame.f->data[0], frame.f->data[1],
739 frame.f->linesize[2], frame.f->linesize[0], frame.f->linesize[1],
740 avctx->width, avctx->height);
742 case AV_PIX_FMT_GBRAP10:
743 case AV_PIX_FMT_GBRP10:
744 for (i = 0; i < c->planes; i++) {
745 ret = decode_plane10(c, i, (uint16_t *)frame.f->data[i],
746 frame.f->linesize[i] / 2, avctx->width,
747 avctx->height, plane_start[i],
748 plane_start[i + 1] - 1024,
749 c->frame_pred == PRED_LEFT);
753 c->utdsp.restore_rgb_planes10((uint16_t *)frame.f->data[2], (uint16_t *)frame.f->data[0], (uint16_t *)frame.f->data[1],
754 frame.f->linesize[2] / 2, frame.f->linesize[0] / 2, frame.f->linesize[1] / 2,
755 avctx->width, avctx->height);
757 case AV_PIX_FMT_YUV420P:
758 for (i = 0; i < 3; i++) {
759 ret = decode_plane(c, i, frame.f->data[i], frame.f->linesize[i],
760 avctx->width >> !!i, avctx->height >> !!i,
761 plane_start[i], c->frame_pred == PRED_LEFT);
764 if (c->frame_pred == PRED_MEDIAN) {
765 if (!c->interlaced) {
766 restore_median_planar(c, frame.f->data[i], frame.f->linesize[i],
767 avctx->width >> !!i, avctx->height >> !!i,
770 restore_median_planar_il(c, frame.f->data[i], frame.f->linesize[i],
772 avctx->height >> !!i,
775 } else if (c->frame_pred == PRED_GRADIENT) {
776 if (!c->interlaced) {
777 restore_gradient_planar(c, frame.f->data[i], frame.f->linesize[i],
778 avctx->width >> !!i, avctx->height >> !!i,
781 restore_gradient_planar_il(c, frame.f->data[i], frame.f->linesize[i],
783 avctx->height >> !!i,
789 case AV_PIX_FMT_YUV422P:
790 for (i = 0; i < 3; i++) {
791 ret = decode_plane(c, i, frame.f->data[i], frame.f->linesize[i],
792 avctx->width >> !!i, avctx->height,
793 plane_start[i], c->frame_pred == PRED_LEFT);
796 if (c->frame_pred == PRED_MEDIAN) {
797 if (!c->interlaced) {
798 restore_median_planar(c, frame.f->data[i], frame.f->linesize[i],
799 avctx->width >> !!i, avctx->height,
802 restore_median_planar_il(c, frame.f->data[i], frame.f->linesize[i],
803 avctx->width >> !!i, avctx->height,
806 } else if (c->frame_pred == PRED_GRADIENT) {
807 if (!c->interlaced) {
808 restore_gradient_planar(c, frame.f->data[i], frame.f->linesize[i],
809 avctx->width >> !!i, avctx->height,
812 restore_gradient_planar_il(c, frame.f->data[i], frame.f->linesize[i],
813 avctx->width >> !!i, avctx->height,
819 case AV_PIX_FMT_YUV444P:
820 for (i = 0; i < 3; i++) {
821 ret = decode_plane(c, i, frame.f->data[i], frame.f->linesize[i],
822 avctx->width, avctx->height,
823 plane_start[i], c->frame_pred == PRED_LEFT);
826 if (c->frame_pred == PRED_MEDIAN) {
827 if (!c->interlaced) {
828 restore_median_planar(c, frame.f->data[i], frame.f->linesize[i],
829 avctx->width, avctx->height,
832 restore_median_planar_il(c, frame.f->data[i], frame.f->linesize[i],
833 avctx->width, avctx->height,
836 } else if (c->frame_pred == PRED_GRADIENT) {
837 if (!c->interlaced) {
838 restore_gradient_planar(c, frame.f->data[i], frame.f->linesize[i],
839 avctx->width, avctx->height,
842 restore_gradient_planar_il(c, frame.f->data[i], frame.f->linesize[i],
843 avctx->width, avctx->height,
849 case AV_PIX_FMT_YUV420P10:
850 for (i = 0; i < 3; i++) {
851 ret = decode_plane10(c, i, (uint16_t *)frame.f->data[i], frame.f->linesize[i] / 2,
852 avctx->width >> !!i, avctx->height >> !!i,
853 plane_start[i], plane_start[i + 1] - 1024, c->frame_pred == PRED_LEFT);
858 case AV_PIX_FMT_YUV422P10:
859 for (i = 0; i < 3; i++) {
860 ret = decode_plane10(c, i, (uint16_t *)frame.f->data[i], frame.f->linesize[i] / 2,
861 avctx->width >> !!i, avctx->height,
862 plane_start[i], plane_start[i + 1] - 1024, c->frame_pred == PRED_LEFT);
869 frame.f->key_frame = 1;
870 frame.f->pict_type = AV_PICTURE_TYPE_I;
871 frame.f->interlaced_frame = !!c->interlaced;
875 /* always report that the buffer was completely consumed */
879 static av_cold int decode_init(AVCodecContext *avctx)
881 UtvideoContext * const c = avctx->priv_data;
882 int h_shift, v_shift;
886 ff_utvideodsp_init(&c->utdsp);
887 ff_bswapdsp_init(&c->bdsp);
888 ff_llviddsp_init(&c->llviddsp);
890 c->slice_bits_size = 0;
892 switch (avctx->codec_tag) {
893 case MKTAG('U', 'L', 'R', 'G'):
895 avctx->pix_fmt = AV_PIX_FMT_GBRP;
897 case MKTAG('U', 'L', 'R', 'A'):
899 avctx->pix_fmt = AV_PIX_FMT_GBRAP;
901 case MKTAG('U', 'L', 'Y', '0'):
903 avctx->pix_fmt = AV_PIX_FMT_YUV420P;
904 avctx->colorspace = AVCOL_SPC_BT470BG;
906 case MKTAG('U', 'L', 'Y', '2'):
908 avctx->pix_fmt = AV_PIX_FMT_YUV422P;
909 avctx->colorspace = AVCOL_SPC_BT470BG;
911 case MKTAG('U', 'L', 'Y', '4'):
913 avctx->pix_fmt = AV_PIX_FMT_YUV444P;
914 avctx->colorspace = AVCOL_SPC_BT470BG;
916 case MKTAG('U', 'Q', 'Y', '0'):
919 avctx->pix_fmt = AV_PIX_FMT_YUV420P10;
921 case MKTAG('U', 'Q', 'Y', '2'):
924 avctx->pix_fmt = AV_PIX_FMT_YUV422P10;
926 case MKTAG('U', 'Q', 'R', 'G'):
929 avctx->pix_fmt = AV_PIX_FMT_GBRP10;
931 case MKTAG('U', 'Q', 'R', 'A'):
934 avctx->pix_fmt = AV_PIX_FMT_GBRAP10;
936 case MKTAG('U', 'L', 'H', '0'):
938 avctx->pix_fmt = AV_PIX_FMT_YUV420P;
939 avctx->colorspace = AVCOL_SPC_BT709;
941 case MKTAG('U', 'L', 'H', '2'):
943 avctx->pix_fmt = AV_PIX_FMT_YUV422P;
944 avctx->colorspace = AVCOL_SPC_BT709;
946 case MKTAG('U', 'L', 'H', '4'):
948 avctx->pix_fmt = AV_PIX_FMT_YUV444P;
949 avctx->colorspace = AVCOL_SPC_BT709;
951 case MKTAG('U', 'M', 'Y', '2'):
954 avctx->pix_fmt = AV_PIX_FMT_YUV422P;
955 avctx->colorspace = AVCOL_SPC_BT470BG;
957 case MKTAG('U', 'M', 'H', '2'):
960 avctx->pix_fmt = AV_PIX_FMT_YUV422P;
961 avctx->colorspace = AVCOL_SPC_BT709;
963 case MKTAG('U', 'M', 'Y', '4'):
966 avctx->pix_fmt = AV_PIX_FMT_YUV444P;
967 avctx->colorspace = AVCOL_SPC_BT470BG;
969 case MKTAG('U', 'M', 'H', '4'):
972 avctx->pix_fmt = AV_PIX_FMT_YUV444P;
973 avctx->colorspace = AVCOL_SPC_BT709;
975 case MKTAG('U', 'M', 'R', 'G'):
978 avctx->pix_fmt = AV_PIX_FMT_GBRP;
980 case MKTAG('U', 'M', 'R', 'A'):
983 avctx->pix_fmt = AV_PIX_FMT_GBRAP;
986 av_log(avctx, AV_LOG_ERROR, "Unknown Ut Video FOURCC provided (%08X)\n",
988 return AVERROR_INVALIDDATA;
991 av_pix_fmt_get_chroma_sub_sample(avctx->pix_fmt, &h_shift, &v_shift);
992 if ((avctx->width & ((1<<h_shift)-1)) ||
993 (avctx->height & ((1<<v_shift)-1))) {
994 avpriv_request_sample(avctx, "Odd dimensions");
995 return AVERROR_PATCHWELCOME;
998 if (c->pack && avctx->extradata_size >= 16) {
999 av_log(avctx, AV_LOG_DEBUG, "Encoder version %d.%d.%d.%d\n",
1000 avctx->extradata[3], avctx->extradata[2],
1001 avctx->extradata[1], avctx->extradata[0]);
1002 av_log(avctx, AV_LOG_DEBUG, "Original format %"PRIX32"\n",
1003 AV_RB32(avctx->extradata + 4));
1004 c->compression = avctx->extradata[8];
1005 if (c->compression != 2)
1006 avpriv_request_sample(avctx, "Unknown compression type");
1007 c->slices = avctx->extradata[9] + 1;
1008 } else if (!c->pro && avctx->extradata_size >= 16) {
1009 av_log(avctx, AV_LOG_DEBUG, "Encoder version %d.%d.%d.%d\n",
1010 avctx->extradata[3], avctx->extradata[2],
1011 avctx->extradata[1], avctx->extradata[0]);
1012 av_log(avctx, AV_LOG_DEBUG, "Original format %"PRIX32"\n",
1013 AV_RB32(avctx->extradata + 4));
1014 c->frame_info_size = AV_RL32(avctx->extradata + 8);
1015 c->flags = AV_RL32(avctx->extradata + 12);
1017 if (c->frame_info_size != 4)
1018 avpriv_request_sample(avctx, "Frame info not 4 bytes");
1019 av_log(avctx, AV_LOG_DEBUG, "Encoding parameters %08"PRIX32"\n", c->flags);
1020 c->slices = (c->flags >> 24) + 1;
1021 c->compression = c->flags & 1;
1022 c->interlaced = c->flags & 0x800;
1023 } else if (c->pro && avctx->extradata_size == 8) {
1024 av_log(avctx, AV_LOG_DEBUG, "Encoder version %d.%d.%d.%d\n",
1025 avctx->extradata[3], avctx->extradata[2],
1026 avctx->extradata[1], avctx->extradata[0]);
1027 av_log(avctx, AV_LOG_DEBUG, "Original format %"PRIX32"\n",
1028 AV_RB32(avctx->extradata + 4));
1030 c->frame_info_size = 4;
1032 av_log(avctx, AV_LOG_ERROR,
1033 "Insufficient extradata size %d, should be at least 16\n",
1034 avctx->extradata_size);
1035 return AVERROR_INVALIDDATA;
1041 static av_cold int decode_end(AVCodecContext *avctx)
1043 UtvideoContext * const c = avctx->priv_data;
1045 av_freep(&c->slice_bits);
1050 AVCodec ff_utvideo_decoder = {
1052 .long_name = NULL_IF_CONFIG_SMALL("Ut Video"),
1053 .type = AVMEDIA_TYPE_VIDEO,
1054 .id = AV_CODEC_ID_UTVIDEO,
1055 .priv_data_size = sizeof(UtvideoContext),
1056 .init = decode_init,
1057 .close = decode_end,
1058 .decode = decode_frame,
1059 .capabilities = AV_CODEC_CAP_DR1 | AV_CODEC_CAP_FRAME_THREADS,
1060 .caps_internal = FF_CODEC_CAP_INIT_THREADSAFE,