| /* |
| * Ut Video decoder |
| * Copyright (c) 2011 Konstantin Shishkov |
| * |
| * This file is part of FFmpeg. |
| * |
| * FFmpeg is free software; you can redistribute it and/or |
| * modify it under the terms of the GNU Lesser General Public |
| * License as published by the Free Software Foundation; either |
| * version 2.1 of the License, or (at your option) any later version. |
| * |
| * FFmpeg is distributed in the hope that it will be useful, |
| * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| * Lesser General Public License for more details. |
| * |
| * You should have received a copy of the GNU Lesser General Public |
| * License along with FFmpeg; if not, write to the Free Software |
| * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA |
| */ |
| |
| /** |
| * @file |
| * Ut Video decoder |
| */ |
| |
| #include <inttypes.h> |
| #include <stdlib.h> |
| |
| #define CACHED_BITSTREAM_READER !ARCH_X86_32 |
| // Chromium: Don't include this. |
| // #define UNCHECKED_BITSTREAM_READER 1 |
| |
| #include "libavutil/intreadwrite.h" |
| #include "libavutil/pixdesc.h" |
| #include "avcodec.h" |
| #include "bswapdsp.h" |
| #include "bytestream.h" |
| #include "get_bits.h" |
| #include "internal.h" |
| #include "thread.h" |
| #include "utvideo.h" |
| |
| typedef struct HuffEntry { |
| uint8_t len; |
| uint16_t sym; |
| } HuffEntry; |
| |
| static int build_huff(UtvideoContext *c, const uint8_t *src, VLC *vlc, |
| int *fsym, unsigned nb_elems) |
| { |
| int i; |
| HuffEntry he[1024]; |
| uint8_t bits[1024]; |
| uint16_t codes_count[33] = { 0 }; |
| |
| *fsym = -1; |
| for (i = 0; i < nb_elems; i++) { |
| if (src[i] == 0) { |
| *fsym = i; |
| return 0; |
| } else if (src[i] == 255) { |
| bits[i] = 0; |
| } else if (src[i] <= 32) { |
| bits[i] = src[i]; |
| } else |
| return AVERROR_INVALIDDATA; |
| |
| codes_count[bits[i]]++; |
| } |
| if (codes_count[0] == nb_elems) |
| return AVERROR_INVALIDDATA; |
| |
| /* For Ut Video, longer codes are to the left of the tree and |
| * for codes with the same length the symbol is descending from |
| * left to right. So after the next loop --codes_count[i] will |
| * be the index of the first (lowest) symbol of length i when |
| * indexed by the position in the tree with left nodes being first. */ |
| for (int i = 31; i >= 0; i--) |
| codes_count[i] += codes_count[i + 1]; |
| |
| for (unsigned i = 0; i < nb_elems; i++) |
| he[--codes_count[bits[i]]] = (HuffEntry) { bits[i], i }; |
| |
| #define VLC_BITS 11 |
| return ff_init_vlc_from_lengths(vlc, VLC_BITS, codes_count[0], |
| &he[0].len, sizeof(*he), |
| &he[0].sym, sizeof(*he), 2, 0, 0, c->avctx); |
| } |
| |
| static int decode_plane10(UtvideoContext *c, int plane_no, |
| uint16_t *dst, ptrdiff_t stride, |
| int width, int height, |
| const uint8_t *src, const uint8_t *huff, |
| int use_pred) |
| { |
| int i, j, slice, pix, ret; |
| int sstart, send; |
| VLC vlc; |
| GetBitContext gb; |
| int prev, fsym; |
| |
| if ((ret = build_huff(c, huff, &vlc, &fsym, 1024)) < 0) { |
| av_log(c->avctx, AV_LOG_ERROR, "Cannot build Huffman codes\n"); |
| return ret; |
| } |
| if (fsym >= 0) { // build_huff reported a symbol to fill slices with |
| send = 0; |
| for (slice = 0; slice < c->slices; slice++) { |
| uint16_t *dest; |
| |
| sstart = send; |
| send = (height * (slice + 1) / c->slices); |
| dest = dst + sstart * stride; |
| |
| prev = 0x200; |
| for (j = sstart; j < send; j++) { |
| for (i = 0; i < width; i++) { |
| pix = fsym; |
| if (use_pred) { |
| prev += pix; |
| prev &= 0x3FF; |
| pix = prev; |
| } |
| dest[i] = pix; |
| } |
| dest += stride; |
| } |
| } |
| return 0; |
| } |
| |
| send = 0; |
| for (slice = 0; slice < c->slices; slice++) { |
| uint16_t *dest; |
| int slice_data_start, slice_data_end, slice_size; |
| |
| sstart = send; |
| send = (height * (slice + 1) / c->slices); |
| dest = dst + sstart * stride; |
| |
| // slice offset and size validation was done earlier |
| slice_data_start = slice ? AV_RL32(src + slice * 4 - 4) : 0; |
| slice_data_end = AV_RL32(src + slice * 4); |
| slice_size = slice_data_end - slice_data_start; |
| |
| if (!slice_size) { |
| av_log(c->avctx, AV_LOG_ERROR, "Plane has more than one symbol " |
| "yet a slice has a length of zero.\n"); |
| goto fail; |
| } |
| |
| memset(c->slice_bits + slice_size, 0, AV_INPUT_BUFFER_PADDING_SIZE); |
| c->bdsp.bswap_buf((uint32_t *) c->slice_bits, |
| (uint32_t *)(src + slice_data_start + c->slices * 4), |
| (slice_data_end - slice_data_start + 3) >> 2); |
| init_get_bits(&gb, c->slice_bits, slice_size * 8); |
| |
| prev = 0x200; |
| for (j = sstart; j < send; j++) { |
| for (i = 0; i < width; i++) { |
| pix = get_vlc2(&gb, vlc.table, VLC_BITS, 3); |
| if (pix < 0) { |
| av_log(c->avctx, AV_LOG_ERROR, "Decoding error\n"); |
| goto fail; |
| } |
| if (use_pred) { |
| prev += pix; |
| prev &= 0x3FF; |
| pix = prev; |
| } |
| dest[i] = pix; |
| } |
| dest += stride; |
| if (get_bits_left(&gb) < 0) { |
| av_log(c->avctx, AV_LOG_ERROR, |
| "Slice decoding ran out of bits\n"); |
| goto fail; |
| } |
| } |
| if (get_bits_left(&gb) > 32) |
| av_log(c->avctx, AV_LOG_WARNING, |
| "%d bits left after decoding slice\n", get_bits_left(&gb)); |
| } |
| |
| ff_free_vlc(&vlc); |
| |
| return 0; |
| fail: |
| ff_free_vlc(&vlc); |
| return AVERROR_INVALIDDATA; |
| } |
| |
| static int compute_cmask(int plane_no, int interlaced, enum AVPixelFormat pix_fmt) |
| { |
| const int is_luma = (pix_fmt == AV_PIX_FMT_YUV420P) && !plane_no; |
| |
| if (interlaced) |
| return ~(1 + 2 * is_luma); |
| |
| return ~is_luma; |
| } |
| |
| static int decode_plane(UtvideoContext *c, int plane_no, |
| uint8_t *dst, ptrdiff_t stride, |
| int width, int height, |
| const uint8_t *src, int use_pred) |
| { |
| int i, j, slice, pix; |
| int sstart, send; |
| VLC vlc; |
| GetBitContext gb; |
| int ret, prev, fsym; |
| const int cmask = compute_cmask(plane_no, c->interlaced, c->avctx->pix_fmt); |
| |
| if (c->pack) { |
| send = 0; |
| for (slice = 0; slice < c->slices; slice++) { |
| GetBitContext cbit, pbit; |
| uint8_t *dest, *p; |
| |
| ret = init_get_bits8_le(&cbit, c->control_stream[plane_no][slice], c->control_stream_size[plane_no][slice]); |
| if (ret < 0) |
| return ret; |
| |
| ret = init_get_bits8_le(&pbit, c->packed_stream[plane_no][slice], c->packed_stream_size[plane_no][slice]); |
| if (ret < 0) |
| return ret; |
| |
| sstart = send; |
| send = (height * (slice + 1) / c->slices) & cmask; |
| dest = dst + sstart * stride; |
| |
| if (3 * ((dst + send * stride - dest + 7)/8) > get_bits_left(&cbit)) |
| return AVERROR_INVALIDDATA; |
| |
| for (p = dest; p < dst + send * stride; p += 8) { |
| int bits = get_bits_le(&cbit, 3); |
| |
| if (bits == 0) { |
| *(uint64_t *) p = 0; |
| } else { |
| uint32_t sub = 0x80 >> (8 - (bits + 1)), add; |
| int k; |
| |
| if ((bits + 1) * 8 > get_bits_left(&pbit)) |
| return AVERROR_INVALIDDATA; |
| |
| for (k = 0; k < 8; k++) { |
| |
| p[k] = get_bits_le(&pbit, bits + 1); |
| add = (~p[k] & sub) << (8 - bits); |
| p[k] -= sub; |
| p[k] += add; |
| } |
| } |
| } |
| } |
| |
| return 0; |
| } |
| |
| if (build_huff(c, src, &vlc, &fsym, 256)) { |
| av_log(c->avctx, AV_LOG_ERROR, "Cannot build Huffman codes\n"); |
| return AVERROR_INVALIDDATA; |
| } |
| if (fsym >= 0) { // build_huff reported a symbol to fill slices with |
| send = 0; |
| for (slice = 0; slice < c->slices; slice++) { |
| uint8_t *dest; |
| |
| sstart = send; |
| send = (height * (slice + 1) / c->slices) & cmask; |
| dest = dst + sstart * stride; |
| |
| prev = 0x80; |
| for (j = sstart; j < send; j++) { |
| for (i = 0; i < width; i++) { |
| pix = fsym; |
| if (use_pred) { |
| prev += (unsigned)pix; |
| pix = prev; |
| } |
| dest[i] = pix; |
| } |
| dest += stride; |
| } |
| } |
| return 0; |
| } |
| |
| src += 256; |
| |
| send = 0; |
| for (slice = 0; slice < c->slices; slice++) { |
| uint8_t *dest; |
| int slice_data_start, slice_data_end, slice_size; |
| |
| sstart = send; |
| send = (height * (slice + 1) / c->slices) & cmask; |
| dest = dst + sstart * stride; |
| |
| // slice offset and size validation was done earlier |
| slice_data_start = slice ? AV_RL32(src + slice * 4 - 4) : 0; |
| slice_data_end = AV_RL32(src + slice * 4); |
| slice_size = slice_data_end - slice_data_start; |
| |
| if (!slice_size) { |
| av_log(c->avctx, AV_LOG_ERROR, "Plane has more than one symbol " |
| "yet a slice has a length of zero.\n"); |
| goto fail; |
| } |
| |
| memset(c->slice_bits + slice_size, 0, AV_INPUT_BUFFER_PADDING_SIZE); |
| c->bdsp.bswap_buf((uint32_t *) c->slice_bits, |
| (uint32_t *)(src + slice_data_start + c->slices * 4), |
| (slice_data_end - slice_data_start + 3) >> 2); |
| init_get_bits(&gb, c->slice_bits, slice_size * 8); |
| |
| prev = 0x80; |
| for (j = sstart; j < send; j++) { |
| for (i = 0; i < width; i++) { |
| pix = get_vlc2(&gb, vlc.table, VLC_BITS, 3); |
| if (pix < 0) { |
| av_log(c->avctx, AV_LOG_ERROR, "Decoding error\n"); |
| goto fail; |
| } |
| if (use_pred) { |
| prev += pix; |
| pix = prev; |
| } |
| dest[i] = pix; |
| } |
| if (get_bits_left(&gb) < 0) { |
| av_log(c->avctx, AV_LOG_ERROR, |
| "Slice decoding ran out of bits\n"); |
| goto fail; |
| } |
| dest += stride; |
| } |
| if (get_bits_left(&gb) > 32) |
| av_log(c->avctx, AV_LOG_WARNING, |
| "%d bits left after decoding slice\n", get_bits_left(&gb)); |
| } |
| |
| ff_free_vlc(&vlc); |
| |
| return 0; |
| fail: |
| ff_free_vlc(&vlc); |
| return AVERROR_INVALIDDATA; |
| } |
| |
| #undef A |
| #undef B |
| #undef C |
| |
| static void restore_median_planar(UtvideoContext *c, uint8_t *src, ptrdiff_t stride, |
| int width, int height, int slices, int rmode) |
| { |
| int i, j, slice; |
| int A, B, C; |
| uint8_t *bsrc; |
| int slice_start, slice_height; |
| const int cmask = ~rmode; |
| |
| for (slice = 0; slice < slices; slice++) { |
| slice_start = ((slice * height) / slices) & cmask; |
| slice_height = ((((slice + 1) * height) / slices) & cmask) - |
| slice_start; |
| |
| if (!slice_height) |
| continue; |
| bsrc = src + slice_start * stride; |
| |
| // first line - left neighbour prediction |
| bsrc[0] += 0x80; |
| c->llviddsp.add_left_pred(bsrc, bsrc, width, 0); |
| bsrc += stride; |
| if (slice_height <= 1) |
| continue; |
| // second line - first element has top prediction, the rest uses median |
| C = bsrc[-stride]; |
| bsrc[0] += C; |
| A = bsrc[0]; |
| for (i = 1; i < FFMIN(width, 16); i++) { /* scalar loop (DSP need align 16) */ |
| B = bsrc[i - stride]; |
| bsrc[i] += mid_pred(A, B, (uint8_t)(A + B - C)); |
| C = B; |
| A = bsrc[i]; |
| } |
| if (width > 16) |
| c->llviddsp.add_median_pred(bsrc + 16, bsrc - stride + 16, |
| bsrc + 16, width - 16, &A, &B); |
| |
| bsrc += stride; |
| // the rest of lines use continuous median prediction |
| for (j = 2; j < slice_height; j++) { |
| c->llviddsp.add_median_pred(bsrc, bsrc - stride, |
| bsrc, width, &A, &B); |
| bsrc += stride; |
| } |
| } |
| } |
| |
| /* UtVideo interlaced mode treats every two lines as a single one, |
| * so restoring function should take care of possible padding between |
| * two parts of the same "line". |
| */ |
| static void restore_median_planar_il(UtvideoContext *c, uint8_t *src, ptrdiff_t stride, |
| int width, int height, int slices, int rmode) |
| { |
| int i, j, slice; |
| int A, B, C; |
| uint8_t *bsrc; |
| int slice_start, slice_height; |
| const int cmask = ~(rmode ? 3 : 1); |
| const ptrdiff_t stride2 = stride << 1; |
| |
| for (slice = 0; slice < slices; slice++) { |
| slice_start = ((slice * height) / slices) & cmask; |
| slice_height = ((((slice + 1) * height) / slices) & cmask) - |
| slice_start; |
| slice_height >>= 1; |
| if (!slice_height) |
| continue; |
| |
| bsrc = src + slice_start * stride; |
| |
| // first line - left neighbour prediction |
| bsrc[0] += 0x80; |
| A = c->llviddsp.add_left_pred(bsrc, bsrc, width, 0); |
| c->llviddsp.add_left_pred(bsrc + stride, bsrc + stride, width, A); |
| bsrc += stride2; |
| if (slice_height <= 1) |
| continue; |
| // second line - first element has top prediction, the rest uses median |
| C = bsrc[-stride2]; |
| bsrc[0] += C; |
| A = bsrc[0]; |
| for (i = 1; i < FFMIN(width, 16); i++) { /* scalar loop (DSP need align 16) */ |
| B = bsrc[i - stride2]; |
| bsrc[i] += mid_pred(A, B, (uint8_t)(A + B - C)); |
| C = B; |
| A = bsrc[i]; |
| } |
| if (width > 16) |
| c->llviddsp.add_median_pred(bsrc + 16, bsrc - stride2 + 16, |
| bsrc + 16, width - 16, &A, &B); |
| |
| c->llviddsp.add_median_pred(bsrc + stride, bsrc - stride, |
| bsrc + stride, width, &A, &B); |
| bsrc += stride2; |
| // the rest of lines use continuous median prediction |
| for (j = 2; j < slice_height; j++) { |
| c->llviddsp.add_median_pred(bsrc, bsrc - stride2, |
| bsrc, width, &A, &B); |
| c->llviddsp.add_median_pred(bsrc + stride, bsrc - stride, |
| bsrc + stride, width, &A, &B); |
| bsrc += stride2; |
| } |
| } |
| } |
| |
| static void restore_gradient_planar(UtvideoContext *c, uint8_t *src, ptrdiff_t stride, |
| int width, int height, int slices, int rmode) |
| { |
| int i, j, slice; |
| int A, B, C; |
| uint8_t *bsrc; |
| int slice_start, slice_height; |
| const int cmask = ~rmode; |
| int min_width = FFMIN(width, 32); |
| |
| for (slice = 0; slice < slices; slice++) { |
| slice_start = ((slice * height) / slices) & cmask; |
| slice_height = ((((slice + 1) * height) / slices) & cmask) - |
| slice_start; |
| |
| if (!slice_height) |
| continue; |
| bsrc = src + slice_start * stride; |
| |
| // first line - left neighbour prediction |
| bsrc[0] += 0x80; |
| c->llviddsp.add_left_pred(bsrc, bsrc, width, 0); |
| bsrc += stride; |
| if (slice_height <= 1) |
| continue; |
| for (j = 1; j < slice_height; j++) { |
| // second line - first element has top prediction, the rest uses gradient |
| bsrc[0] = (bsrc[0] + bsrc[-stride]) & 0xFF; |
| for (i = 1; i < min_width; i++) { /* dsp need align 32 */ |
| A = bsrc[i - stride]; |
| B = bsrc[i - (stride + 1)]; |
| C = bsrc[i - 1]; |
| bsrc[i] = (A - B + C + bsrc[i]) & 0xFF; |
| } |
| if (width > 32) |
| c->llviddsp.add_gradient_pred(bsrc + 32, stride, width - 32); |
| bsrc += stride; |
| } |
| } |
| } |
| |
| static void restore_gradient_planar_il(UtvideoContext *c, uint8_t *src, ptrdiff_t stride, |
| int width, int height, int slices, int rmode) |
| { |
| int i, j, slice; |
| int A, B, C; |
| uint8_t *bsrc; |
| int slice_start, slice_height; |
| const int cmask = ~(rmode ? 3 : 1); |
| const ptrdiff_t stride2 = stride << 1; |
| int min_width = FFMIN(width, 32); |
| |
| for (slice = 0; slice < slices; slice++) { |
| slice_start = ((slice * height) / slices) & cmask; |
| slice_height = ((((slice + 1) * height) / slices) & cmask) - |
| slice_start; |
| slice_height >>= 1; |
| if (!slice_height) |
| continue; |
| |
| bsrc = src + slice_start * stride; |
| |
| // first line - left neighbour prediction |
| bsrc[0] += 0x80; |
| A = c->llviddsp.add_left_pred(bsrc, bsrc, width, 0); |
| c->llviddsp.add_left_pred(bsrc + stride, bsrc + stride, width, A); |
| bsrc += stride2; |
| if (slice_height <= 1) |
| continue; |
| for (j = 1; j < slice_height; j++) { |
| // second line - first element has top prediction, the rest uses gradient |
| bsrc[0] = (bsrc[0] + bsrc[-stride2]) & 0xFF; |
| for (i = 1; i < min_width; i++) { /* dsp need align 32 */ |
| A = bsrc[i - stride2]; |
| B = bsrc[i - (stride2 + 1)]; |
| C = bsrc[i - 1]; |
| bsrc[i] = (A - B + C + bsrc[i]) & 0xFF; |
| } |
| if (width > 32) |
| c->llviddsp.add_gradient_pred(bsrc + 32, stride2, width - 32); |
| |
| A = bsrc[-stride]; |
| B = bsrc[-(1 + stride + stride - width)]; |
| C = bsrc[width - 1]; |
| bsrc[stride] = (A - B + C + bsrc[stride]) & 0xFF; |
| for (i = 1; i < width; i++) { |
| A = bsrc[i - stride]; |
| B = bsrc[i - (1 + stride)]; |
| C = bsrc[i - 1 + stride]; |
| bsrc[i + stride] = (A - B + C + bsrc[i + stride]) & 0xFF; |
| } |
| bsrc += stride2; |
| } |
| } |
| } |
| |
| static int decode_frame(AVCodecContext *avctx, void *data, int *got_frame, |
| AVPacket *avpkt) |
| { |
| const uint8_t *buf = avpkt->data; |
| int buf_size = avpkt->size; |
| UtvideoContext *c = avctx->priv_data; |
| int i, j; |
| const uint8_t *plane_start[5]; |
| int plane_size, max_slice_size = 0, slice_start, slice_end, slice_size; |
| int ret; |
| GetByteContext gb; |
| ThreadFrame frame = { .f = data }; |
| |
| if ((ret = ff_thread_get_buffer(avctx, &frame, 0)) < 0) |
| return ret; |
| |
| /* parse plane structure to get frame flags and validate slice offsets */ |
| bytestream2_init(&gb, buf, buf_size); |
| |
| if (c->pack) { |
| const uint8_t *packed_stream; |
| const uint8_t *control_stream; |
| GetByteContext pb; |
| uint32_t nb_cbs; |
| int left; |
| |
| c->frame_info = PRED_GRADIENT << 8; |
| |
| if (bytestream2_get_byte(&gb) != 1) |
| return AVERROR_INVALIDDATA; |
| bytestream2_skip(&gb, 3); |
| c->offset = bytestream2_get_le32(&gb); |
| |
| if (buf_size <= c->offset + 8LL) |
| return AVERROR_INVALIDDATA; |
| |
| bytestream2_init(&pb, buf + 8 + c->offset, buf_size - 8 - c->offset); |
| |
| nb_cbs = bytestream2_get_le32(&pb); |
| if (nb_cbs > c->offset) |
| return AVERROR_INVALIDDATA; |
| |
| packed_stream = buf + 8; |
| control_stream = packed_stream + (c->offset - nb_cbs); |
| left = control_stream - packed_stream; |
| |
| for (i = 0; i < c->planes; i++) { |
| for (j = 0; j < c->slices; j++) { |
| c->packed_stream[i][j] = packed_stream; |
| c->packed_stream_size[i][j] = bytestream2_get_le32(&pb); |
| if (c->packed_stream_size[i][j] > left) |
| return AVERROR_INVALIDDATA; |
| left -= c->packed_stream_size[i][j]; |
| packed_stream += c->packed_stream_size[i][j]; |
| } |
| } |
| |
| left = buf + buf_size - control_stream; |
| |
| for (i = 0; i < c->planes; i++) { |
| for (j = 0; j < c->slices; j++) { |
| c->control_stream[i][j] = control_stream; |
| c->control_stream_size[i][j] = bytestream2_get_le32(&pb); |
| if (c->control_stream_size[i][j] > left) |
| return AVERROR_INVALIDDATA; |
| left -= c->control_stream_size[i][j]; |
| control_stream += c->control_stream_size[i][j]; |
| } |
| } |
| } else if (c->pro) { |
| if (bytestream2_get_bytes_left(&gb) < c->frame_info_size) { |
| av_log(avctx, AV_LOG_ERROR, "Not enough data for frame information\n"); |
| return AVERROR_INVALIDDATA; |
| } |
| c->frame_info = bytestream2_get_le32u(&gb); |
| c->slices = ((c->frame_info >> 16) & 0xff) + 1; |
| for (i = 0; i < c->planes; i++) { |
| plane_start[i] = gb.buffer; |
| if (bytestream2_get_bytes_left(&gb) < 1024 + 4 * c->slices) { |
| av_log(avctx, AV_LOG_ERROR, "Insufficient data for a plane\n"); |
| return AVERROR_INVALIDDATA; |
| } |
| slice_start = 0; |
| slice_end = 0; |
| for (j = 0; j < c->slices; j++) { |
| slice_end = bytestream2_get_le32u(&gb); |
| if (slice_end < 0 || slice_end < slice_start || |
| bytestream2_get_bytes_left(&gb) < slice_end + 1024LL) { |
| av_log(avctx, AV_LOG_ERROR, "Incorrect slice size\n"); |
| return AVERROR_INVALIDDATA; |
| } |
| slice_size = slice_end - slice_start; |
| slice_start = slice_end; |
| max_slice_size = FFMAX(max_slice_size, slice_size); |
| } |
| plane_size = slice_end; |
| bytestream2_skipu(&gb, plane_size); |
| bytestream2_skipu(&gb, 1024); |
| } |
| plane_start[c->planes] = gb.buffer; |
| } else { |
| for (i = 0; i < c->planes; i++) { |
| plane_start[i] = gb.buffer; |
| if (bytestream2_get_bytes_left(&gb) < 256 + 4 * c->slices) { |
| av_log(avctx, AV_LOG_ERROR, "Insufficient data for a plane\n"); |
| return AVERROR_INVALIDDATA; |
| } |
| bytestream2_skipu(&gb, 256); |
| slice_start = 0; |
| slice_end = 0; |
| for (j = 0; j < c->slices; j++) { |
| slice_end = bytestream2_get_le32u(&gb); |
| if (slice_end < 0 || slice_end < slice_start || |
| bytestream2_get_bytes_left(&gb) < slice_end) { |
| av_log(avctx, AV_LOG_ERROR, "Incorrect slice size\n"); |
| return AVERROR_INVALIDDATA; |
| } |
| slice_size = slice_end - slice_start; |
| slice_start = slice_end; |
| max_slice_size = FFMAX(max_slice_size, slice_size); |
| } |
| plane_size = slice_end; |
| bytestream2_skipu(&gb, plane_size); |
| } |
| plane_start[c->planes] = gb.buffer; |
| if (bytestream2_get_bytes_left(&gb) < c->frame_info_size) { |
| av_log(avctx, AV_LOG_ERROR, "Not enough data for frame information\n"); |
| return AVERROR_INVALIDDATA; |
| } |
| c->frame_info = bytestream2_get_le32u(&gb); |
| } |
| av_log(avctx, AV_LOG_DEBUG, "frame information flags %"PRIX32"\n", |
| c->frame_info); |
| |
| c->frame_pred = (c->frame_info >> 8) & 3; |
| |
| max_slice_size += 4*avctx->width; |
| |
| if (!c->pack) { |
| av_fast_malloc(&c->slice_bits, &c->slice_bits_size, |
| max_slice_size + AV_INPUT_BUFFER_PADDING_SIZE); |
| |
| if (!c->slice_bits) { |
| av_log(avctx, AV_LOG_ERROR, "Cannot allocate temporary buffer\n"); |
| return AVERROR(ENOMEM); |
| } |
| } |
| |
| switch (c->avctx->pix_fmt) { |
| case AV_PIX_FMT_GBRP: |
| case AV_PIX_FMT_GBRAP: |
| for (i = 0; i < c->planes; i++) { |
| ret = decode_plane(c, i, frame.f->data[i], |
| frame.f->linesize[i], avctx->width, |
| avctx->height, plane_start[i], |
| c->frame_pred == PRED_LEFT); |
| if (ret) |
| return ret; |
| if (c->frame_pred == PRED_MEDIAN) { |
| if (!c->interlaced) { |
| restore_median_planar(c, frame.f->data[i], |
| frame.f->linesize[i], avctx->width, |
| avctx->height, c->slices, 0); |
| } else { |
| restore_median_planar_il(c, frame.f->data[i], |
| frame.f->linesize[i], |
| avctx->width, avctx->height, c->slices, |
| 0); |
| } |
| } else if (c->frame_pred == PRED_GRADIENT) { |
| if (!c->interlaced) { |
| restore_gradient_planar(c, frame.f->data[i], |
| frame.f->linesize[i], avctx->width, |
| avctx->height, c->slices, 0); |
| } else { |
| restore_gradient_planar_il(c, frame.f->data[i], |
| frame.f->linesize[i], |
| avctx->width, avctx->height, c->slices, |
| 0); |
| } |
| } |
| } |
| c->utdsp.restore_rgb_planes(frame.f->data[2], frame.f->data[0], frame.f->data[1], |
| frame.f->linesize[2], frame.f->linesize[0], frame.f->linesize[1], |
| avctx->width, avctx->height); |
| break; |
| case AV_PIX_FMT_GBRAP10: |
| case AV_PIX_FMT_GBRP10: |
| for (i = 0; i < c->planes; i++) { |
| ret = decode_plane10(c, i, (uint16_t *)frame.f->data[i], |
| frame.f->linesize[i] / 2, avctx->width, |
| avctx->height, plane_start[i], |
| plane_start[i + 1] - 1024, |
| c->frame_pred == PRED_LEFT); |
| if (ret) |
| return ret; |
| } |
| c->utdsp.restore_rgb_planes10((uint16_t *)frame.f->data[2], (uint16_t *)frame.f->data[0], (uint16_t *)frame.f->data[1], |
| frame.f->linesize[2] / 2, frame.f->linesize[0] / 2, frame.f->linesize[1] / 2, |
| avctx->width, avctx->height); |
| break; |
| case AV_PIX_FMT_YUV420P: |
| for (i = 0; i < 3; i++) { |
| ret = decode_plane(c, i, frame.f->data[i], frame.f->linesize[i], |
| avctx->width >> !!i, avctx->height >> !!i, |
| plane_start[i], c->frame_pred == PRED_LEFT); |
| if (ret) |
| return ret; |
| if (c->frame_pred == PRED_MEDIAN) { |
| if (!c->interlaced) { |
| restore_median_planar(c, frame.f->data[i], frame.f->linesize[i], |
| avctx->width >> !!i, avctx->height >> !!i, |
| c->slices, !i); |
| } else { |
| restore_median_planar_il(c, frame.f->data[i], frame.f->linesize[i], |
| avctx->width >> !!i, |
| avctx->height >> !!i, |
| c->slices, !i); |
| } |
| } else if (c->frame_pred == PRED_GRADIENT) { |
| if (!c->interlaced) { |
| restore_gradient_planar(c, frame.f->data[i], frame.f->linesize[i], |
| avctx->width >> !!i, avctx->height >> !!i, |
| c->slices, !i); |
| } else { |
| restore_gradient_planar_il(c, frame.f->data[i], frame.f->linesize[i], |
| avctx->width >> !!i, |
| avctx->height >> !!i, |
| c->slices, !i); |
| } |
| } |
| } |
| break; |
| case AV_PIX_FMT_YUV422P: |
| for (i = 0; i < 3; i++) { |
| ret = decode_plane(c, i, frame.f->data[i], frame.f->linesize[i], |
| avctx->width >> !!i, avctx->height, |
| plane_start[i], c->frame_pred == PRED_LEFT); |
| if (ret) |
| return ret; |
| if (c->frame_pred == PRED_MEDIAN) { |
| if (!c->interlaced) { |
| restore_median_planar(c, frame.f->data[i], frame.f->linesize[i], |
| avctx->width >> !!i, avctx->height, |
| c->slices, 0); |
| } else { |
| restore_median_planar_il(c, frame.f->data[i], frame.f->linesize[i], |
| avctx->width >> !!i, avctx->height, |
| c->slices, 0); |
| } |
| } else if (c->frame_pred == PRED_GRADIENT) { |
| if (!c->interlaced) { |
| restore_gradient_planar(c, frame.f->data[i], frame.f->linesize[i], |
| avctx->width >> !!i, avctx->height, |
| c->slices, 0); |
| } else { |
| restore_gradient_planar_il(c, frame.f->data[i], frame.f->linesize[i], |
| avctx->width >> !!i, avctx->height, |
| c->slices, 0); |
| } |
| } |
| } |
| break; |
| case AV_PIX_FMT_YUV444P: |
| for (i = 0; i < 3; i++) { |
| ret = decode_plane(c, i, frame.f->data[i], frame.f->linesize[i], |
| avctx->width, avctx->height, |
| plane_start[i], c->frame_pred == PRED_LEFT); |
| if (ret) |
| return ret; |
| if (c->frame_pred == PRED_MEDIAN) { |
| if (!c->interlaced) { |
| restore_median_planar(c, frame.f->data[i], frame.f->linesize[i], |
| avctx->width, avctx->height, |
| c->slices, 0); |
| } else { |
| restore_median_planar_il(c, frame.f->data[i], frame.f->linesize[i], |
| avctx->width, avctx->height, |
| c->slices, 0); |
| } |
| } else if (c->frame_pred == PRED_GRADIENT) { |
| if (!c->interlaced) { |
| restore_gradient_planar(c, frame.f->data[i], frame.f->linesize[i], |
| avctx->width, avctx->height, |
| c->slices, 0); |
| } else { |
| restore_gradient_planar_il(c, frame.f->data[i], frame.f->linesize[i], |
| avctx->width, avctx->height, |
| c->slices, 0); |
| } |
| } |
| } |
| break; |
| case AV_PIX_FMT_YUV420P10: |
| for (i = 0; i < 3; i++) { |
| ret = decode_plane10(c, i, (uint16_t *)frame.f->data[i], frame.f->linesize[i] / 2, |
| avctx->width >> !!i, avctx->height >> !!i, |
| plane_start[i], plane_start[i + 1] - 1024, c->frame_pred == PRED_LEFT); |
| if (ret) |
| return ret; |
| } |
| break; |
| case AV_PIX_FMT_YUV422P10: |
| for (i = 0; i < 3; i++) { |
| ret = decode_plane10(c, i, (uint16_t *)frame.f->data[i], frame.f->linesize[i] / 2, |
| avctx->width >> !!i, avctx->height, |
| plane_start[i], plane_start[i + 1] - 1024, c->frame_pred == PRED_LEFT); |
| if (ret) |
| return ret; |
| } |
| break; |
| } |
| |
| frame.f->key_frame = 1; |
| frame.f->pict_type = AV_PICTURE_TYPE_I; |
| frame.f->interlaced_frame = !!c->interlaced; |
| |
| *got_frame = 1; |
| |
| /* always report that the buffer was completely consumed */ |
| return buf_size; |
| } |
| |
| static av_cold int decode_init(AVCodecContext *avctx) |
| { |
| UtvideoContext * const c = avctx->priv_data; |
| int h_shift, v_shift; |
| |
| c->avctx = avctx; |
| |
| ff_utvideodsp_init(&c->utdsp); |
| ff_bswapdsp_init(&c->bdsp); |
| ff_llviddsp_init(&c->llviddsp); |
| |
| c->slice_bits_size = 0; |
| |
| switch (avctx->codec_tag) { |
| case MKTAG('U', 'L', 'R', 'G'): |
| c->planes = 3; |
| avctx->pix_fmt = AV_PIX_FMT_GBRP; |
| break; |
| case MKTAG('U', 'L', 'R', 'A'): |
| c->planes = 4; |
| avctx->pix_fmt = AV_PIX_FMT_GBRAP; |
| break; |
| case MKTAG('U', 'L', 'Y', '0'): |
| c->planes = 3; |
| avctx->pix_fmt = AV_PIX_FMT_YUV420P; |
| avctx->colorspace = AVCOL_SPC_BT470BG; |
| break; |
| case MKTAG('U', 'L', 'Y', '2'): |
| c->planes = 3; |
| avctx->pix_fmt = AV_PIX_FMT_YUV422P; |
| avctx->colorspace = AVCOL_SPC_BT470BG; |
| break; |
| case MKTAG('U', 'L', 'Y', '4'): |
| c->planes = 3; |
| avctx->pix_fmt = AV_PIX_FMT_YUV444P; |
| avctx->colorspace = AVCOL_SPC_BT470BG; |
| break; |
| case MKTAG('U', 'Q', 'Y', '0'): |
| c->planes = 3; |
| c->pro = 1; |
| avctx->pix_fmt = AV_PIX_FMT_YUV420P10; |
| break; |
| case MKTAG('U', 'Q', 'Y', '2'): |
| c->planes = 3; |
| c->pro = 1; |
| avctx->pix_fmt = AV_PIX_FMT_YUV422P10; |
| break; |
| case MKTAG('U', 'Q', 'R', 'G'): |
| c->planes = 3; |
| c->pro = 1; |
| avctx->pix_fmt = AV_PIX_FMT_GBRP10; |
| break; |
| case MKTAG('U', 'Q', 'R', 'A'): |
| c->planes = 4; |
| c->pro = 1; |
| avctx->pix_fmt = AV_PIX_FMT_GBRAP10; |
| break; |
| case MKTAG('U', 'L', 'H', '0'): |
| c->planes = 3; |
| avctx->pix_fmt = AV_PIX_FMT_YUV420P; |
| avctx->colorspace = AVCOL_SPC_BT709; |
| break; |
| case MKTAG('U', 'L', 'H', '2'): |
| c->planes = 3; |
| avctx->pix_fmt = AV_PIX_FMT_YUV422P; |
| avctx->colorspace = AVCOL_SPC_BT709; |
| break; |
| case MKTAG('U', 'L', 'H', '4'): |
| c->planes = 3; |
| avctx->pix_fmt = AV_PIX_FMT_YUV444P; |
| avctx->colorspace = AVCOL_SPC_BT709; |
| break; |
| case MKTAG('U', 'M', 'Y', '2'): |
| c->planes = 3; |
| c->pack = 1; |
| avctx->pix_fmt = AV_PIX_FMT_YUV422P; |
| avctx->colorspace = AVCOL_SPC_BT470BG; |
| break; |
| case MKTAG('U', 'M', 'H', '2'): |
| c->planes = 3; |
| c->pack = 1; |
| avctx->pix_fmt = AV_PIX_FMT_YUV422P; |
| avctx->colorspace = AVCOL_SPC_BT709; |
| break; |
| case MKTAG('U', 'M', 'Y', '4'): |
| c->planes = 3; |
| c->pack = 1; |
| avctx->pix_fmt = AV_PIX_FMT_YUV444P; |
| avctx->colorspace = AVCOL_SPC_BT470BG; |
| break; |
| case MKTAG('U', 'M', 'H', '4'): |
| c->planes = 3; |
| c->pack = 1; |
| avctx->pix_fmt = AV_PIX_FMT_YUV444P; |
| avctx->colorspace = AVCOL_SPC_BT709; |
| break; |
| case MKTAG('U', 'M', 'R', 'G'): |
| c->planes = 3; |
| c->pack = 1; |
| avctx->pix_fmt = AV_PIX_FMT_GBRP; |
| break; |
| case MKTAG('U', 'M', 'R', 'A'): |
| c->planes = 4; |
| c->pack = 1; |
| avctx->pix_fmt = AV_PIX_FMT_GBRAP; |
| break; |
| default: |
| av_log(avctx, AV_LOG_ERROR, "Unknown Ut Video FOURCC provided (%08X)\n", |
| avctx->codec_tag); |
| return AVERROR_INVALIDDATA; |
| } |
| |
| av_pix_fmt_get_chroma_sub_sample(avctx->pix_fmt, &h_shift, &v_shift); |
| if ((avctx->width & ((1<<h_shift)-1)) || |
| (avctx->height & ((1<<v_shift)-1))) { |
| avpriv_request_sample(avctx, "Odd dimensions"); |
| return AVERROR_PATCHWELCOME; |
| } |
| |
| if (c->pack && avctx->extradata_size >= 16) { |
| av_log(avctx, AV_LOG_DEBUG, "Encoder version %d.%d.%d.%d\n", |
| avctx->extradata[3], avctx->extradata[2], |
| avctx->extradata[1], avctx->extradata[0]); |
| av_log(avctx, AV_LOG_DEBUG, "Original format %"PRIX32"\n", |
| AV_RB32(avctx->extradata + 4)); |
| c->compression = avctx->extradata[8]; |
| if (c->compression != 2) |
| avpriv_request_sample(avctx, "Unknown compression type"); |
| c->slices = avctx->extradata[9] + 1; |
| } else if (!c->pro && avctx->extradata_size >= 16) { |
| av_log(avctx, AV_LOG_DEBUG, "Encoder version %d.%d.%d.%d\n", |
| avctx->extradata[3], avctx->extradata[2], |
| avctx->extradata[1], avctx->extradata[0]); |
| av_log(avctx, AV_LOG_DEBUG, "Original format %"PRIX32"\n", |
| AV_RB32(avctx->extradata + 4)); |
| c->frame_info_size = AV_RL32(avctx->extradata + 8); |
| c->flags = AV_RL32(avctx->extradata + 12); |
| |
| if (c->frame_info_size != 4) |
| avpriv_request_sample(avctx, "Frame info not 4 bytes"); |
| av_log(avctx, AV_LOG_DEBUG, "Encoding parameters %08"PRIX32"\n", c->flags); |
| c->slices = (c->flags >> 24) + 1; |
| c->compression = c->flags & 1; |
| c->interlaced = c->flags & 0x800; |
| } else if (c->pro && avctx->extradata_size == 8) { |
| av_log(avctx, AV_LOG_DEBUG, "Encoder version %d.%d.%d.%d\n", |
| avctx->extradata[3], avctx->extradata[2], |
| avctx->extradata[1], avctx->extradata[0]); |
| av_log(avctx, AV_LOG_DEBUG, "Original format %"PRIX32"\n", |
| AV_RB32(avctx->extradata + 4)); |
| c->interlaced = 0; |
| c->frame_info_size = 4; |
| } else { |
| av_log(avctx, AV_LOG_ERROR, |
| "Insufficient extradata size %d, should be at least 16\n", |
| avctx->extradata_size); |
| return AVERROR_INVALIDDATA; |
| } |
| |
| return 0; |
| } |
| |
| static av_cold int decode_end(AVCodecContext *avctx) |
| { |
| UtvideoContext * const c = avctx->priv_data; |
| |
| av_freep(&c->slice_bits); |
| |
| return 0; |
| } |
| |
| AVCodec ff_utvideo_decoder = { |
| .name = "utvideo", |
| .long_name = NULL_IF_CONFIG_SMALL("Ut Video"), |
| .type = AVMEDIA_TYPE_VIDEO, |
| .id = AV_CODEC_ID_UTVIDEO, |
| .priv_data_size = sizeof(UtvideoContext), |
| .init = decode_init, |
| .close = decode_end, |
| .decode = decode_frame, |
| .capabilities = AV_CODEC_CAP_DR1 | AV_CODEC_CAP_FRAME_THREADS, |
| .caps_internal = FF_CODEC_CAP_INIT_THREADSAFE, |
| }; |
