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 typedef struct HuffEntry {
48 static int build_huff(UtvideoContext *c, const uint8_t *src, VLC *vlc,
49 int *fsym, unsigned nb_elems)
54 uint16_t codes_count[33] = { 0 };
57 for (i = 0; i < nb_elems; i++) {
61 } else if (src[i] == 255) {
63 } else if (src[i] <= 32) {
66 return AVERROR_INVALIDDATA;
68 codes_count[bits[i]]++;
70 if (codes_count[0] == nb_elems)
71 return AVERROR_INVALIDDATA;
73 /* For Ut Video, longer codes are to the left of the tree and
74 * for codes with the same length the symbol is descending from
75 * left to right. So after the next loop --codes_count[i] will
76 * be the index of the first (lowest) symbol of length i when
77 * indexed by the position in the tree with left nodes being first. */
78 for (int i = 31; i >= 0; i--)
79 codes_count[i] += codes_count[i + 1];
81 for (unsigned i = 0; i < nb_elems; i++)
82 he[--codes_count[bits[i]]] = (HuffEntry) { bits[i], i };
85 return ff_init_vlc_from_lengths(vlc, VLC_BITS, codes_count[0],
86 &he[0].len, sizeof(*he),
87 &he[0].sym, sizeof(*he), 2, 0, 0, c->avctx);
90 static int decode_plane10(UtvideoContext *c, int plane_no,
91 uint16_t *dst, ptrdiff_t stride,
92 int width, int height,
93 const uint8_t *src, const uint8_t *huff,
96 int i, j, slice, pix, ret;
102 if ((ret = build_huff(c, huff, &vlc, &fsym, 1024)) < 0) {
103 av_log(c->avctx, AV_LOG_ERROR, "Cannot build Huffman codes\n");
106 if (fsym >= 0) { // build_huff reported a symbol to fill slices with
108 for (slice = 0; slice < c->slices; slice++) {
112 send = (height * (slice + 1) / c->slices);
113 dest = dst + sstart * stride;
116 for (j = sstart; j < send; j++) {
117 for (i = 0; i < width; i++) {
133 for (slice = 0; slice < c->slices; slice++) {
135 int slice_data_start, slice_data_end, slice_size;
138 send = (height * (slice + 1) / c->slices);
139 dest = dst + sstart * stride;
141 // slice offset and size validation was done earlier
142 slice_data_start = slice ? AV_RL32(src + slice * 4 - 4) : 0;
143 slice_data_end = AV_RL32(src + slice * 4);
144 slice_size = slice_data_end - slice_data_start;
147 av_log(c->avctx, AV_LOG_ERROR, "Plane has more than one symbol "
148 "yet a slice has a length of zero.\n");
152 memset(c->slice_bits + slice_size, 0, AV_INPUT_BUFFER_PADDING_SIZE);
153 c->bdsp.bswap_buf((uint32_t *) c->slice_bits,
154 (uint32_t *)(src + slice_data_start + c->slices * 4),
155 (slice_data_end - slice_data_start + 3) >> 2);
156 init_get_bits(&gb, c->slice_bits, slice_size * 8);
159 for (j = sstart; j < send; j++) {
160 for (i = 0; i < width; i++) {
161 pix = get_vlc2(&gb, vlc.table, VLC_BITS, 3);
163 av_log(c->avctx, AV_LOG_ERROR, "Decoding error\n");
174 if (get_bits_left(&gb) < 0) {
175 av_log(c->avctx, AV_LOG_ERROR,
176 "Slice decoding ran out of bits\n");
180 if (get_bits_left(&gb) > 32)
181 av_log(c->avctx, AV_LOG_WARNING,
182 "%d bits left after decoding slice\n", get_bits_left(&gb));
190 return AVERROR_INVALIDDATA;
193 static int compute_cmask(int plane_no, int interlaced, enum AVPixelFormat pix_fmt)
195 const int is_luma = (pix_fmt == AV_PIX_FMT_YUV420P) && !plane_no;
198 return ~(1 + 2 * is_luma);
203 static int decode_plane(UtvideoContext *c, int plane_no,
204 uint8_t *dst, ptrdiff_t stride,
205 int width, int height,
206 const uint8_t *src, int use_pred)
208 int i, j, slice, pix;
213 const int cmask = compute_cmask(plane_no, c->interlaced, c->avctx->pix_fmt);
217 for (slice = 0; slice < c->slices; slice++) {
218 GetBitContext cbit, pbit;
221 ret = init_get_bits8_le(&cbit, c->control_stream[plane_no][slice], c->control_stream_size[plane_no][slice]);
225 ret = init_get_bits8_le(&pbit, c->packed_stream[plane_no][slice], c->packed_stream_size[plane_no][slice]);
230 send = (height * (slice + 1) / c->slices) & cmask;
231 dest = dst + sstart * stride;
233 if (3 * ((dst + send * stride - dest + 7)/8) > get_bits_left(&cbit))
234 return AVERROR_INVALIDDATA;
236 for (p = dest; p < dst + send * stride; p += 8) {
237 int bits = get_bits_le(&cbit, 3);
242 uint32_t sub = 0x80 >> (8 - (bits + 1)), add;
245 if ((bits + 1) * 8 > get_bits_left(&pbit))
246 return AVERROR_INVALIDDATA;
248 for (k = 0; k < 8; k++) {
250 p[k] = get_bits_le(&pbit, bits + 1);
251 add = (~p[k] & sub) << (8 - bits);
262 if (build_huff(c, src, &vlc, &fsym, 256)) {
263 av_log(c->avctx, AV_LOG_ERROR, "Cannot build Huffman codes\n");
264 return AVERROR_INVALIDDATA;
266 if (fsym >= 0) { // build_huff reported a symbol to fill slices with
268 for (slice = 0; slice < c->slices; slice++) {
272 send = (height * (slice + 1) / c->slices) & cmask;
273 dest = dst + sstart * stride;
276 for (j = sstart; j < send; j++) {
277 for (i = 0; i < width; i++) {
280 prev += (unsigned)pix;
294 for (slice = 0; slice < c->slices; slice++) {
296 int slice_data_start, slice_data_end, slice_size;
299 send = (height * (slice + 1) / c->slices) & cmask;
300 dest = dst + sstart * stride;
302 // slice offset and size validation was done earlier
303 slice_data_start = slice ? AV_RL32(src + slice * 4 - 4) : 0;
304 slice_data_end = AV_RL32(src + slice * 4);
305 slice_size = slice_data_end - slice_data_start;
308 av_log(c->avctx, AV_LOG_ERROR, "Plane has more than one symbol "
309 "yet a slice has a length of zero.\n");
313 memset(c->slice_bits + slice_size, 0, AV_INPUT_BUFFER_PADDING_SIZE);
314 c->bdsp.bswap_buf((uint32_t *) c->slice_bits,
315 (uint32_t *)(src + slice_data_start + c->slices * 4),
316 (slice_data_end - slice_data_start + 3) >> 2);
317 init_get_bits(&gb, c->slice_bits, slice_size * 8);
320 for (j = sstart; j < send; j++) {
321 for (i = 0; i < width; i++) {
322 pix = get_vlc2(&gb, vlc.table, VLC_BITS, 3);
324 av_log(c->avctx, AV_LOG_ERROR, "Decoding error\n");
333 if (get_bits_left(&gb) < 0) {
334 av_log(c->avctx, AV_LOG_ERROR,
335 "Slice decoding ran out of bits\n");
340 if (get_bits_left(&gb) > 32)
341 av_log(c->avctx, AV_LOG_WARNING,
342 "%d bits left after decoding slice\n", get_bits_left(&gb));
350 return AVERROR_INVALIDDATA;
357 static void restore_median_planar(UtvideoContext *c, uint8_t *src, ptrdiff_t stride,
358 int width, int height, int slices, int rmode)
363 int slice_start, slice_height;
364 const int cmask = ~rmode;
366 for (slice = 0; slice < slices; slice++) {
367 slice_start = ((slice * height) / slices) & cmask;
368 slice_height = ((((slice + 1) * height) / slices) & cmask) -
373 bsrc = src + slice_start * stride;
375 // first line - left neighbour prediction
377 c->llviddsp.add_left_pred(bsrc, bsrc, width, 0);
379 if (slice_height <= 1)
381 // second line - first element has top prediction, the rest uses median
385 for (i = 1; i < FFMIN(width, 16); i++) { /* scalar loop (DSP need align 16) */
386 B = bsrc[i - stride];
387 bsrc[i] += mid_pred(A, B, (uint8_t)(A + B - C));
392 c->llviddsp.add_median_pred(bsrc + 16, bsrc - stride + 16,
393 bsrc + 16, width - 16, &A, &B);
396 // the rest of lines use continuous median prediction
397 for (j = 2; j < slice_height; j++) {
398 c->llviddsp.add_median_pred(bsrc, bsrc - stride,
399 bsrc, width, &A, &B);
405 /* UtVideo interlaced mode treats every two lines as a single one,
406 * so restoring function should take care of possible padding between
407 * two parts of the same "line".
409 static void restore_median_planar_il(UtvideoContext *c, uint8_t *src, ptrdiff_t stride,
410 int width, int height, int slices, int rmode)
415 int slice_start, slice_height;
416 const int cmask = ~(rmode ? 3 : 1);
417 const ptrdiff_t stride2 = stride << 1;
419 for (slice = 0; slice < slices; slice++) {
420 slice_start = ((slice * height) / slices) & cmask;
421 slice_height = ((((slice + 1) * height) / slices) & cmask) -
427 bsrc = src + slice_start * stride;
429 // first line - left neighbour prediction
431 A = c->llviddsp.add_left_pred(bsrc, bsrc, width, 0);
432 c->llviddsp.add_left_pred(bsrc + stride, bsrc + stride, width, A);
434 if (slice_height <= 1)
436 // second line - first element has top prediction, the rest uses median
440 for (i = 1; i < FFMIN(width, 16); i++) { /* scalar loop (DSP need align 16) */
441 B = bsrc[i - stride2];
442 bsrc[i] += mid_pred(A, B, (uint8_t)(A + B - C));
447 c->llviddsp.add_median_pred(bsrc + 16, bsrc - stride2 + 16,
448 bsrc + 16, width - 16, &A, &B);
450 c->llviddsp.add_median_pred(bsrc + stride, bsrc - stride,
451 bsrc + stride, width, &A, &B);
453 // the rest of lines use continuous median prediction
454 for (j = 2; j < slice_height; j++) {
455 c->llviddsp.add_median_pred(bsrc, bsrc - stride2,
456 bsrc, width, &A, &B);
457 c->llviddsp.add_median_pred(bsrc + stride, bsrc - stride,
458 bsrc + stride, width, &A, &B);
464 static void restore_gradient_planar(UtvideoContext *c, uint8_t *src, ptrdiff_t stride,
465 int width, int height, int slices, int rmode)
470 int slice_start, slice_height;
471 const int cmask = ~rmode;
472 int min_width = FFMIN(width, 32);
474 for (slice = 0; slice < slices; slice++) {
475 slice_start = ((slice * height) / slices) & cmask;
476 slice_height = ((((slice + 1) * height) / slices) & cmask) -
481 bsrc = src + slice_start * stride;
483 // first line - left neighbour prediction
485 c->llviddsp.add_left_pred(bsrc, bsrc, width, 0);
487 if (slice_height <= 1)
489 for (j = 1; j < slice_height; j++) {
490 // second line - first element has top prediction, the rest uses gradient
491 bsrc[0] = (bsrc[0] + bsrc[-stride]) & 0xFF;
492 for (i = 1; i < min_width; i++) { /* dsp need align 32 */
493 A = bsrc[i - stride];
494 B = bsrc[i - (stride + 1)];
496 bsrc[i] = (A - B + C + bsrc[i]) & 0xFF;
499 c->llviddsp.add_gradient_pred(bsrc + 32, stride, width - 32);
505 static void restore_gradient_planar_il(UtvideoContext *c, uint8_t *src, ptrdiff_t stride,
506 int width, int height, int slices, int rmode)
511 int slice_start, slice_height;
512 const int cmask = ~(rmode ? 3 : 1);
513 const ptrdiff_t stride2 = stride << 1;
514 int min_width = FFMIN(width, 32);
516 for (slice = 0; slice < slices; slice++) {
517 slice_start = ((slice * height) / slices) & cmask;
518 slice_height = ((((slice + 1) * height) / slices) & cmask) -
524 bsrc = src + slice_start * stride;
526 // first line - left neighbour prediction
528 A = c->llviddsp.add_left_pred(bsrc, bsrc, width, 0);
529 c->llviddsp.add_left_pred(bsrc + stride, bsrc + stride, width, A);
531 if (slice_height <= 1)
533 for (j = 1; j < slice_height; j++) {
534 // second line - first element has top prediction, the rest uses gradient
535 bsrc[0] = (bsrc[0] + bsrc[-stride2]) & 0xFF;
536 for (i = 1; i < min_width; i++) { /* dsp need align 32 */
537 A = bsrc[i - stride2];
538 B = bsrc[i - (stride2 + 1)];
540 bsrc[i] = (A - B + C + bsrc[i]) & 0xFF;
543 c->llviddsp.add_gradient_pred(bsrc + 32, stride2, width - 32);
546 B = bsrc[-(1 + stride + stride - width)];
548 bsrc[stride] = (A - B + C + bsrc[stride]) & 0xFF;
549 for (i = 1; i < width; i++) {
550 A = bsrc[i - stride];
551 B = bsrc[i - (1 + stride)];
552 C = bsrc[i - 1 + stride];
553 bsrc[i + stride] = (A - B + C + bsrc[i + stride]) & 0xFF;
560 static int decode_frame(AVCodecContext *avctx, void *data, int *got_frame,
563 const uint8_t *buf = avpkt->data;
564 int buf_size = avpkt->size;
565 UtvideoContext *c = avctx->priv_data;
567 const uint8_t *plane_start[5];
568 int plane_size, max_slice_size = 0, slice_start, slice_end, slice_size;
571 ThreadFrame frame = { .f = data };
573 if ((ret = ff_thread_get_buffer(avctx, &frame, 0)) < 0)
576 /* parse plane structure to get frame flags and validate slice offsets */
577 bytestream2_init(&gb, buf, buf_size);
580 const uint8_t *packed_stream;
581 const uint8_t *control_stream;
586 c->frame_info = PRED_GRADIENT << 8;
588 if (bytestream2_get_byte(&gb) != 1)
589 return AVERROR_INVALIDDATA;
590 bytestream2_skip(&gb, 3);
591 c->offset = bytestream2_get_le32(&gb);
593 if (buf_size <= c->offset + 8LL)
594 return AVERROR_INVALIDDATA;
596 bytestream2_init(&pb, buf + 8 + c->offset, buf_size - 8 - c->offset);
598 nb_cbs = bytestream2_get_le32(&pb);
599 if (nb_cbs > c->offset)
600 return AVERROR_INVALIDDATA;
602 packed_stream = buf + 8;
603 control_stream = packed_stream + (c->offset - nb_cbs);
604 left = control_stream - packed_stream;
606 for (i = 0; i < c->planes; i++) {
607 for (j = 0; j < c->slices; j++) {
608 c->packed_stream[i][j] = packed_stream;
609 c->packed_stream_size[i][j] = bytestream2_get_le32(&pb);
610 if (c->packed_stream_size[i][j] > left)
611 return AVERROR_INVALIDDATA;
612 left -= c->packed_stream_size[i][j];
613 packed_stream += c->packed_stream_size[i][j];
617 left = buf + buf_size - control_stream;
619 for (i = 0; i < c->planes; i++) {
620 for (j = 0; j < c->slices; j++) {
621 c->control_stream[i][j] = control_stream;
622 c->control_stream_size[i][j] = bytestream2_get_le32(&pb);
623 if (c->control_stream_size[i][j] > left)
624 return AVERROR_INVALIDDATA;
625 left -= c->control_stream_size[i][j];
626 control_stream += c->control_stream_size[i][j];
630 if (bytestream2_get_bytes_left(&gb) < c->frame_info_size) {
631 av_log(avctx, AV_LOG_ERROR, "Not enough data for frame information\n");
632 return AVERROR_INVALIDDATA;
634 c->frame_info = bytestream2_get_le32u(&gb);
635 c->slices = ((c->frame_info >> 16) & 0xff) + 1;
636 for (i = 0; i < c->planes; i++) {
637 plane_start[i] = gb.buffer;
638 if (bytestream2_get_bytes_left(&gb) < 1024 + 4 * c->slices) {
639 av_log(avctx, AV_LOG_ERROR, "Insufficient data for a plane\n");
640 return AVERROR_INVALIDDATA;
644 for (j = 0; j < c->slices; j++) {
645 slice_end = bytestream2_get_le32u(&gb);
646 if (slice_end < 0 || slice_end < slice_start ||
647 bytestream2_get_bytes_left(&gb) < slice_end + 1024LL) {
648 av_log(avctx, AV_LOG_ERROR, "Incorrect slice size\n");
649 return AVERROR_INVALIDDATA;
651 slice_size = slice_end - slice_start;
652 slice_start = slice_end;
653 max_slice_size = FFMAX(max_slice_size, slice_size);
655 plane_size = slice_end;
656 bytestream2_skipu(&gb, plane_size);
657 bytestream2_skipu(&gb, 1024);
659 plane_start[c->planes] = gb.buffer;
661 for (i = 0; i < c->planes; i++) {
662 plane_start[i] = gb.buffer;
663 if (bytestream2_get_bytes_left(&gb) < 256 + 4 * c->slices) {
664 av_log(avctx, AV_LOG_ERROR, "Insufficient data for a plane\n");
665 return AVERROR_INVALIDDATA;
667 bytestream2_skipu(&gb, 256);
670 for (j = 0; j < c->slices; j++) {
671 slice_end = bytestream2_get_le32u(&gb);
672 if (slice_end < 0 || slice_end < slice_start ||
673 bytestream2_get_bytes_left(&gb) < slice_end) {
674 av_log(avctx, AV_LOG_ERROR, "Incorrect slice size\n");
675 return AVERROR_INVALIDDATA;
677 slice_size = slice_end - slice_start;
678 slice_start = slice_end;
679 max_slice_size = FFMAX(max_slice_size, slice_size);
681 plane_size = slice_end;
682 bytestream2_skipu(&gb, plane_size);
684 plane_start[c->planes] = gb.buffer;
685 if (bytestream2_get_bytes_left(&gb) < c->frame_info_size) {
686 av_log(avctx, AV_LOG_ERROR, "Not enough data for frame information\n");
687 return AVERROR_INVALIDDATA;
689 c->frame_info = bytestream2_get_le32u(&gb);
691 av_log(avctx, AV_LOG_DEBUG, "frame information flags %"PRIX32"\n",
694 c->frame_pred = (c->frame_info >> 8) & 3;
696 max_slice_size += 4*avctx->width;
699 av_fast_malloc(&c->slice_bits, &c->slice_bits_size,
700 max_slice_size + AV_INPUT_BUFFER_PADDING_SIZE);
702 if (!c->slice_bits) {
703 av_log(avctx, AV_LOG_ERROR, "Cannot allocate temporary buffer\n");
704 return AVERROR(ENOMEM);
708 switch (c->avctx->pix_fmt) {
709 case AV_PIX_FMT_GBRP:
710 case AV_PIX_FMT_GBRAP:
711 for (i = 0; i < c->planes; i++) {
712 ret = decode_plane(c, i, frame.f->data[i],
713 frame.f->linesize[i], avctx->width,
714 avctx->height, plane_start[i],
715 c->frame_pred == PRED_LEFT);
718 if (c->frame_pred == PRED_MEDIAN) {
719 if (!c->interlaced) {
720 restore_median_planar(c, frame.f->data[i],
721 frame.f->linesize[i], avctx->width,
722 avctx->height, c->slices, 0);
724 restore_median_planar_il(c, frame.f->data[i],
725 frame.f->linesize[i],
726 avctx->width, avctx->height, c->slices,
729 } else if (c->frame_pred == PRED_GRADIENT) {
730 if (!c->interlaced) {
731 restore_gradient_planar(c, frame.f->data[i],
732 frame.f->linesize[i], avctx->width,
733 avctx->height, c->slices, 0);
735 restore_gradient_planar_il(c, frame.f->data[i],
736 frame.f->linesize[i],
737 avctx->width, avctx->height, c->slices,
742 c->utdsp.restore_rgb_planes(frame.f->data[2], frame.f->data[0], frame.f->data[1],
743 frame.f->linesize[2], frame.f->linesize[0], frame.f->linesize[1],
744 avctx->width, avctx->height);
746 case AV_PIX_FMT_GBRAP10:
747 case AV_PIX_FMT_GBRP10:
748 for (i = 0; i < c->planes; i++) {
749 ret = decode_plane10(c, i, (uint16_t *)frame.f->data[i],
750 frame.f->linesize[i] / 2, avctx->width,
751 avctx->height, plane_start[i],
752 plane_start[i + 1] - 1024,
753 c->frame_pred == PRED_LEFT);
757 c->utdsp.restore_rgb_planes10((uint16_t *)frame.f->data[2], (uint16_t *)frame.f->data[0], (uint16_t *)frame.f->data[1],
758 frame.f->linesize[2] / 2, frame.f->linesize[0] / 2, frame.f->linesize[1] / 2,
759 avctx->width, avctx->height);
761 case AV_PIX_FMT_YUV420P:
762 for (i = 0; i < 3; i++) {
763 ret = decode_plane(c, i, frame.f->data[i], frame.f->linesize[i],
764 avctx->width >> !!i, avctx->height >> !!i,
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 >> !!i, avctx->height >> !!i,
774 restore_median_planar_il(c, frame.f->data[i], frame.f->linesize[i],
776 avctx->height >> !!i,
779 } else if (c->frame_pred == PRED_GRADIENT) {
780 if (!c->interlaced) {
781 restore_gradient_planar(c, frame.f->data[i], frame.f->linesize[i],
782 avctx->width >> !!i, avctx->height >> !!i,
785 restore_gradient_planar_il(c, frame.f->data[i], frame.f->linesize[i],
787 avctx->height >> !!i,
793 case AV_PIX_FMT_YUV422P:
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,
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,
806 restore_median_planar_il(c, frame.f->data[i], frame.f->linesize[i],
807 avctx->width >> !!i, avctx->height,
810 } else if (c->frame_pred == PRED_GRADIENT) {
811 if (!c->interlaced) {
812 restore_gradient_planar(c, frame.f->data[i], frame.f->linesize[i],
813 avctx->width >> !!i, avctx->height,
816 restore_gradient_planar_il(c, frame.f->data[i], frame.f->linesize[i],
817 avctx->width >> !!i, avctx->height,
823 case AV_PIX_FMT_YUV444P:
824 for (i = 0; i < 3; i++) {
825 ret = decode_plane(c, i, frame.f->data[i], frame.f->linesize[i],
826 avctx->width, avctx->height,
827 plane_start[i], c->frame_pred == PRED_LEFT);
830 if (c->frame_pred == PRED_MEDIAN) {
831 if (!c->interlaced) {
832 restore_median_planar(c, frame.f->data[i], frame.f->linesize[i],
833 avctx->width, avctx->height,
836 restore_median_planar_il(c, frame.f->data[i], frame.f->linesize[i],
837 avctx->width, avctx->height,
840 } else if (c->frame_pred == PRED_GRADIENT) {
841 if (!c->interlaced) {
842 restore_gradient_planar(c, frame.f->data[i], frame.f->linesize[i],
843 avctx->width, avctx->height,
846 restore_gradient_planar_il(c, frame.f->data[i], frame.f->linesize[i],
847 avctx->width, avctx->height,
853 case AV_PIX_FMT_YUV420P10:
854 for (i = 0; i < 3; i++) {
855 ret = decode_plane10(c, i, (uint16_t *)frame.f->data[i], frame.f->linesize[i] / 2,
856 avctx->width >> !!i, avctx->height >> !!i,
857 plane_start[i], plane_start[i + 1] - 1024, c->frame_pred == PRED_LEFT);
862 case AV_PIX_FMT_YUV422P10:
863 for (i = 0; i < 3; i++) {
864 ret = decode_plane10(c, i, (uint16_t *)frame.f->data[i], frame.f->linesize[i] / 2,
865 avctx->width >> !!i, avctx->height,
866 plane_start[i], plane_start[i + 1] - 1024, c->frame_pred == PRED_LEFT);
873 frame.f->key_frame = 1;
874 frame.f->pict_type = AV_PICTURE_TYPE_I;
875 frame.f->interlaced_frame = !!c->interlaced;
879 /* always report that the buffer was completely consumed */
883 static av_cold int decode_init(AVCodecContext *avctx)
885 UtvideoContext * const c = avctx->priv_data;
886 int h_shift, v_shift;
890 ff_utvideodsp_init(&c->utdsp);
891 ff_bswapdsp_init(&c->bdsp);
892 ff_llviddsp_init(&c->llviddsp);
894 c->slice_bits_size = 0;
896 switch (avctx->codec_tag) {
897 case MKTAG('U', 'L', 'R', 'G'):
899 avctx->pix_fmt = AV_PIX_FMT_GBRP;
901 case MKTAG('U', 'L', 'R', 'A'):
903 avctx->pix_fmt = AV_PIX_FMT_GBRAP;
905 case MKTAG('U', 'L', 'Y', '0'):
907 avctx->pix_fmt = AV_PIX_FMT_YUV420P;
908 avctx->colorspace = AVCOL_SPC_BT470BG;
910 case MKTAG('U', 'L', 'Y', '2'):
912 avctx->pix_fmt = AV_PIX_FMT_YUV422P;
913 avctx->colorspace = AVCOL_SPC_BT470BG;
915 case MKTAG('U', 'L', 'Y', '4'):
917 avctx->pix_fmt = AV_PIX_FMT_YUV444P;
918 avctx->colorspace = AVCOL_SPC_BT470BG;
920 case MKTAG('U', 'Q', 'Y', '0'):
923 avctx->pix_fmt = AV_PIX_FMT_YUV420P10;
925 case MKTAG('U', 'Q', 'Y', '2'):
928 avctx->pix_fmt = AV_PIX_FMT_YUV422P10;
930 case MKTAG('U', 'Q', 'R', 'G'):
933 avctx->pix_fmt = AV_PIX_FMT_GBRP10;
935 case MKTAG('U', 'Q', 'R', 'A'):
938 avctx->pix_fmt = AV_PIX_FMT_GBRAP10;
940 case MKTAG('U', 'L', 'H', '0'):
942 avctx->pix_fmt = AV_PIX_FMT_YUV420P;
943 avctx->colorspace = AVCOL_SPC_BT709;
945 case MKTAG('U', 'L', 'H', '2'):
947 avctx->pix_fmt = AV_PIX_FMT_YUV422P;
948 avctx->colorspace = AVCOL_SPC_BT709;
950 case MKTAG('U', 'L', 'H', '4'):
952 avctx->pix_fmt = AV_PIX_FMT_YUV444P;
953 avctx->colorspace = AVCOL_SPC_BT709;
955 case MKTAG('U', 'M', 'Y', '2'):
958 avctx->pix_fmt = AV_PIX_FMT_YUV422P;
959 avctx->colorspace = AVCOL_SPC_BT470BG;
961 case MKTAG('U', 'M', 'H', '2'):
964 avctx->pix_fmt = AV_PIX_FMT_YUV422P;
965 avctx->colorspace = AVCOL_SPC_BT709;
967 case MKTAG('U', 'M', 'Y', '4'):
970 avctx->pix_fmt = AV_PIX_FMT_YUV444P;
971 avctx->colorspace = AVCOL_SPC_BT470BG;
973 case MKTAG('U', 'M', 'H', '4'):
976 avctx->pix_fmt = AV_PIX_FMT_YUV444P;
977 avctx->colorspace = AVCOL_SPC_BT709;
979 case MKTAG('U', 'M', 'R', 'G'):
982 avctx->pix_fmt = AV_PIX_FMT_GBRP;
984 case MKTAG('U', 'M', 'R', 'A'):
987 avctx->pix_fmt = AV_PIX_FMT_GBRAP;
990 av_log(avctx, AV_LOG_ERROR, "Unknown Ut Video FOURCC provided (%08X)\n",
992 return AVERROR_INVALIDDATA;
995 av_pix_fmt_get_chroma_sub_sample(avctx->pix_fmt, &h_shift, &v_shift);
996 if ((avctx->width & ((1<<h_shift)-1)) ||
997 (avctx->height & ((1<<v_shift)-1))) {
998 avpriv_request_sample(avctx, "Odd dimensions");
999 return AVERROR_PATCHWELCOME;
1002 if (c->pack && avctx->extradata_size >= 16) {
1003 av_log(avctx, AV_LOG_DEBUG, "Encoder version %d.%d.%d.%d\n",
1004 avctx->extradata[3], avctx->extradata[2],
1005 avctx->extradata[1], avctx->extradata[0]);
1006 av_log(avctx, AV_LOG_DEBUG, "Original format %"PRIX32"\n",
1007 AV_RB32(avctx->extradata + 4));
1008 c->compression = avctx->extradata[8];
1009 if (c->compression != 2)
1010 avpriv_request_sample(avctx, "Unknown compression type");
1011 c->slices = avctx->extradata[9] + 1;
1012 } else if (!c->pro && avctx->extradata_size >= 16) {
1013 av_log(avctx, AV_LOG_DEBUG, "Encoder version %d.%d.%d.%d\n",
1014 avctx->extradata[3], avctx->extradata[2],
1015 avctx->extradata[1], avctx->extradata[0]);
1016 av_log(avctx, AV_LOG_DEBUG, "Original format %"PRIX32"\n",
1017 AV_RB32(avctx->extradata + 4));
1018 c->frame_info_size = AV_RL32(avctx->extradata + 8);
1019 c->flags = AV_RL32(avctx->extradata + 12);
1021 if (c->frame_info_size != 4)
1022 avpriv_request_sample(avctx, "Frame info not 4 bytes");
1023 av_log(avctx, AV_LOG_DEBUG, "Encoding parameters %08"PRIX32"\n", c->flags);
1024 c->slices = (c->flags >> 24) + 1;
1025 c->compression = c->flags & 1;
1026 c->interlaced = c->flags & 0x800;
1027 } else if (c->pro && avctx->extradata_size == 8) {
1028 av_log(avctx, AV_LOG_DEBUG, "Encoder version %d.%d.%d.%d\n",
1029 avctx->extradata[3], avctx->extradata[2],
1030 avctx->extradata[1], avctx->extradata[0]);
1031 av_log(avctx, AV_LOG_DEBUG, "Original format %"PRIX32"\n",
1032 AV_RB32(avctx->extradata + 4));
1034 c->frame_info_size = 4;
1036 av_log(avctx, AV_LOG_ERROR,
1037 "Insufficient extradata size %d, should be at least 16\n",
1038 avctx->extradata_size);
1039 return AVERROR_INVALIDDATA;
1045 static av_cold int decode_end(AVCodecContext *avctx)
1047 UtvideoContext * const c = avctx->priv_data;
1049 av_freep(&c->slice_bits);
1054 AVCodec ff_utvideo_decoder = {
1056 .long_name = NULL_IF_CONFIG_SMALL("Ut Video"),
1057 .type = AVMEDIA_TYPE_VIDEO,
1058 .id = AV_CODEC_ID_UTVIDEO,
1059 .priv_data_size = sizeof(UtvideoContext),
1060 .init = decode_init,
1061 .close = decode_end,
1062 .decode = decode_frame,
1063 .capabilities = AV_CODEC_CAP_DR1 | AV_CODEC_CAP_FRAME_THREADS,
1064 .caps_internal = FF_CODEC_CAP_INIT_THREADSAFE,