| /* |
| * huffyuv decoder |
| * |
| * Copyright (c) 2002-2014 Michael Niedermayer <michaelni@gmx.at> |
| * |
| * see http://www.pcisys.net/~melanson/codecs/huffyuv.txt for a description of |
| * the algorithm used |
| * |
| * 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 |
| * |
| * yuva, gray, 4:4:4, 4:1:1, 4:1:0 and >8 bit per sample support sponsored by NOA |
| */ |
| |
| /** |
| * @file |
| * huffyuv decoder |
| */ |
| |
| #define UNCHECKED_BITSTREAM_READER 1 |
| |
| #include "avcodec.h" |
| #include "get_bits.h" |
| #include "huffyuv.h" |
| #include "huffyuvdsp.h" |
| #include "thread.h" |
| #include "libavutil/imgutils.h" |
| #include "libavutil/pixdesc.h" |
| |
| #define classic_shift_luma_table_size 42 |
| static const unsigned char classic_shift_luma[classic_shift_luma_table_size + AV_INPUT_BUFFER_PADDING_SIZE] = { |
| 34, 36, 35, 69, 135, 232, 9, 16, 10, 24, 11, 23, 12, 16, 13, 10, |
| 14, 8, 15, 8, 16, 8, 17, 20, 16, 10, 207, 206, 205, 236, 11, 8, |
| 10, 21, 9, 23, 8, 8, 199, 70, 69, 68, 0, |
| 0,0,0,0,0,0,0,0, |
| }; |
| |
| #define classic_shift_chroma_table_size 59 |
| static const unsigned char classic_shift_chroma[classic_shift_chroma_table_size + AV_INPUT_BUFFER_PADDING_SIZE] = { |
| 66, 36, 37, 38, 39, 40, 41, 75, 76, 77, 110, 239, 144, 81, 82, 83, |
| 84, 85, 118, 183, 56, 57, 88, 89, 56, 89, 154, 57, 58, 57, 26, 141, |
| 57, 56, 58, 57, 58, 57, 184, 119, 214, 245, 116, 83, 82, 49, 80, 79, |
| 78, 77, 44, 75, 41, 40, 39, 38, 37, 36, 34, 0, |
| 0,0,0,0,0,0,0,0, |
| }; |
| |
| static const unsigned char classic_add_luma[256] = { |
| 3, 9, 5, 12, 10, 35, 32, 29, 27, 50, 48, 45, 44, 41, 39, 37, |
| 73, 70, 68, 65, 64, 61, 58, 56, 53, 50, 49, 46, 44, 41, 38, 36, |
| 68, 65, 63, 61, 58, 55, 53, 51, 48, 46, 45, 43, 41, 39, 38, 36, |
| 35, 33, 32, 30, 29, 27, 26, 25, 48, 47, 46, 44, 43, 41, 40, 39, |
| 37, 36, 35, 34, 32, 31, 30, 28, 27, 26, 24, 23, 22, 20, 19, 37, |
| 35, 34, 33, 31, 30, 29, 27, 26, 24, 23, 21, 20, 18, 17, 15, 29, |
| 27, 26, 24, 22, 21, 19, 17, 16, 14, 26, 25, 23, 21, 19, 18, 16, |
| 15, 27, 25, 23, 21, 19, 17, 16, 14, 26, 25, 23, 21, 18, 17, 14, |
| 12, 17, 19, 13, 4, 9, 2, 11, 1, 7, 8, 0, 16, 3, 14, 6, |
| 12, 10, 5, 15, 18, 11, 10, 13, 15, 16, 19, 20, 22, 24, 27, 15, |
| 18, 20, 22, 24, 26, 14, 17, 20, 22, 24, 27, 15, 18, 20, 23, 25, |
| 28, 16, 19, 22, 25, 28, 32, 36, 21, 25, 29, 33, 38, 42, 45, 49, |
| 28, 31, 34, 37, 40, 42, 44, 47, 49, 50, 52, 54, 56, 57, 59, 60, |
| 62, 64, 66, 67, 69, 35, 37, 39, 40, 42, 43, 45, 47, 48, 51, 52, |
| 54, 55, 57, 59, 60, 62, 63, 66, 67, 69, 71, 72, 38, 40, 42, 43, |
| 46, 47, 49, 51, 26, 28, 30, 31, 33, 34, 18, 19, 11, 13, 7, 8, |
| }; |
| |
| static const unsigned char classic_add_chroma[256] = { |
| 3, 1, 2, 2, 2, 2, 3, 3, 7, 5, 7, 5, 8, 6, 11, 9, |
| 7, 13, 11, 10, 9, 8, 7, 5, 9, 7, 6, 4, 7, 5, 8, 7, |
| 11, 8, 13, 11, 19, 15, 22, 23, 20, 33, 32, 28, 27, 29, 51, 77, |
| 43, 45, 76, 81, 46, 82, 75, 55, 56, 144, 58, 80, 60, 74, 147, 63, |
| 143, 65, 66, 67, 68, 69, 70, 71, 72, 73, 74, 75, 76, 77, 78, 79, |
| 80, 81, 82, 83, 84, 85, 86, 87, 88, 89, 90, 91, 27, 30, 21, 22, |
| 17, 14, 5, 6, 100, 54, 47, 50, 51, 53, 106, 107, 108, 109, 110, 111, |
| 112, 113, 114, 115, 4, 117, 118, 92, 94, 121, 122, 3, 124, 103, 2, 1, |
| 0, 129, 130, 131, 120, 119, 126, 125, 136, 137, 138, 139, 140, 141, 142, 134, |
| 135, 132, 133, 104, 64, 101, 62, 57, 102, 95, 93, 59, 61, 28, 97, 96, |
| 52, 49, 48, 29, 32, 25, 24, 46, 23, 98, 45, 44, 43, 20, 42, 41, |
| 19, 18, 99, 40, 15, 39, 38, 16, 13, 12, 11, 37, 10, 9, 8, 36, |
| 7, 128, 127, 105, 123, 116, 35, 34, 33, 145, 31, 79, 42, 146, 78, 26, |
| 83, 48, 49, 50, 44, 47, 26, 31, 30, 18, 17, 19, 21, 24, 25, 13, |
| 14, 16, 17, 18, 20, 21, 12, 14, 15, 9, 10, 6, 9, 6, 5, 8, |
| 6, 12, 8, 10, 7, 9, 6, 4, 6, 2, 2, 3, 3, 3, 3, 2, |
| }; |
| |
| static int read_len_table(uint8_t *dst, GetBitContext *gb, int n) |
| { |
| int i, val, repeat; |
| |
| for (i = 0; i < n;) { |
| repeat = get_bits(gb, 3); |
| val = get_bits(gb, 5); |
| if (repeat == 0) |
| repeat = get_bits(gb, 8); |
| if (i + repeat > n || get_bits_left(gb) < 0) { |
| av_log(NULL, AV_LOG_ERROR, "Error reading huffman table\n"); |
| return AVERROR_INVALIDDATA; |
| } |
| while (repeat--) |
| dst[i++] = val; |
| } |
| return 0; |
| } |
| |
| static int generate_joint_tables(HYuvContext *s) |
| { |
| int ret; |
| uint16_t *symbols = av_mallocz(5 << VLC_BITS); |
| uint16_t *bits; |
| uint8_t *len; |
| if (!symbols) |
| return AVERROR(ENOMEM); |
| bits = symbols + (1 << VLC_BITS); |
| len = (uint8_t *)(bits + (1 << VLC_BITS)); |
| |
| if (s->bitstream_bpp < 24 || s->version > 2) { |
| int p, i, y, u; |
| for (p = 0; p < 4; p++) { |
| int p0 = s->version > 2 ? p : 0; |
| for (i = y = 0; y < s->vlc_n; y++) { |
| int len0 = s->len[p0][y]; |
| int limit = VLC_BITS - len0; |
| if (limit <= 0 || !len0) |
| continue; |
| if ((sign_extend(y, 8) & (s->vlc_n-1)) != y) |
| continue; |
| for (u = 0; u < s->vlc_n; u++) { |
| int len1 = s->len[p][u]; |
| if (len1 > limit || !len1) |
| continue; |
| if ((sign_extend(u, 8) & (s->vlc_n-1)) != u) |
| continue; |
| av_assert0(i < (1 << VLC_BITS)); |
| len[i] = len0 + len1; |
| bits[i] = (s->bits[p0][y] << len1) + s->bits[p][u]; |
| symbols[i] = (y << 8) + (u & 0xFF); |
| i++; |
| } |
| } |
| ff_free_vlc(&s->vlc[4 + p]); |
| if ((ret = ff_init_vlc_sparse(&s->vlc[4 + p], VLC_BITS, i, len, 1, 1, |
| bits, 2, 2, symbols, 2, 2, 0)) < 0) |
| goto out; |
| } |
| } else { |
| uint8_t (*map)[4] = (uint8_t(*)[4]) s->pix_bgr_map; |
| int i, b, g, r, code; |
| int p0 = s->decorrelate; |
| int p1 = !s->decorrelate; |
| /* Restrict the range to +/-16 because that's pretty much guaranteed |
| * to cover all the combinations that fit in 11 bits total, and it |
| * does not matter if we miss a few rare codes. */ |
| for (i = 0, g = -16; g < 16; g++) { |
| int len0 = s->len[p0][g & 255]; |
| int limit0 = VLC_BITS - len0; |
| if (limit0 < 2 || !len0) |
| continue; |
| for (b = -16; b < 16; b++) { |
| int len1 = s->len[p1][b & 255]; |
| int limit1 = limit0 - len1; |
| if (limit1 < 1 || !len1) |
| continue; |
| code = (s->bits[p0][g & 255] << len1) + s->bits[p1][b & 255]; |
| for (r = -16; r < 16; r++) { |
| int len2 = s->len[2][r & 255]; |
| if (len2 > limit1 || !len2) |
| continue; |
| av_assert0(i < (1 << VLC_BITS)); |
| len[i] = len0 + len1 + len2; |
| bits[i] = (code << len2) + s->bits[2][r & 255]; |
| if (s->decorrelate) { |
| map[i][G] = g; |
| map[i][B] = g + b; |
| map[i][R] = g + r; |
| } else { |
| map[i][B] = g; |
| map[i][G] = b; |
| map[i][R] = r; |
| } |
| i++; |
| } |
| } |
| } |
| ff_free_vlc(&s->vlc[4]); |
| if ((ret = init_vlc(&s->vlc[4], VLC_BITS, i, len, 1, 1, |
| bits, 2, 2, 0)) < 0) |
| goto out; |
| } |
| ret = 0; |
| out: |
| av_freep(&symbols); |
| return ret; |
| } |
| |
| static int read_huffman_tables(HYuvContext *s, const uint8_t *src, int length) |
| { |
| GetBitContext gb; |
| int i, ret; |
| int count = 3; |
| |
| if ((ret = init_get_bits(&gb, src, length * 8)) < 0) |
| return ret; |
| |
| if (s->version > 2) |
| count = 1 + s->alpha + 2*s->chroma; |
| |
| for (i = 0; i < count; i++) { |
| if ((ret = read_len_table(s->len[i], &gb, s->vlc_n)) < 0) |
| return ret; |
| if ((ret = ff_huffyuv_generate_bits_table(s->bits[i], s->len[i], s->vlc_n)) < 0) |
| return ret; |
| ff_free_vlc(&s->vlc[i]); |
| if ((ret = init_vlc(&s->vlc[i], VLC_BITS, s->vlc_n, s->len[i], 1, 1, |
| s->bits[i], 4, 4, 0)) < 0) |
| return ret; |
| } |
| |
| if ((ret = generate_joint_tables(s)) < 0) |
| return ret; |
| |
| return (get_bits_count(&gb) + 7) / 8; |
| } |
| |
| static int read_old_huffman_tables(HYuvContext *s) |
| { |
| GetBitContext gb; |
| int i, ret; |
| |
| init_get_bits(&gb, classic_shift_luma, |
| classic_shift_luma_table_size * 8); |
| if ((ret = read_len_table(s->len[0], &gb, 256)) < 0) |
| return ret; |
| |
| init_get_bits(&gb, classic_shift_chroma, |
| classic_shift_chroma_table_size * 8); |
| if ((ret = read_len_table(s->len[1], &gb, 256)) < 0) |
| return ret; |
| |
| for (i = 0; i < 256; i++) |
| s->bits[0][i] = classic_add_luma[i]; |
| for (i = 0; i < 256; i++) |
| s->bits[1][i] = classic_add_chroma[i]; |
| |
| if (s->bitstream_bpp >= 24) { |
| memcpy(s->bits[1], s->bits[0], 256 * sizeof(uint32_t)); |
| memcpy(s->len[1], s->len[0], 256 * sizeof(uint8_t)); |
| } |
| memcpy(s->bits[2], s->bits[1], 256 * sizeof(uint32_t)); |
| memcpy(s->len[2], s->len[1], 256 * sizeof(uint8_t)); |
| |
| for (i = 0; i < 4; i++) { |
| ff_free_vlc(&s->vlc[i]); |
| if ((ret = init_vlc(&s->vlc[i], VLC_BITS, 256, s->len[i], 1, 1, |
| s->bits[i], 4, 4, 0)) < 0) |
| return ret; |
| } |
| |
| if ((ret = generate_joint_tables(s)) < 0) |
| return ret; |
| |
| return 0; |
| } |
| |
| static av_cold int decode_end(AVCodecContext *avctx) |
| { |
| HYuvContext *s = avctx->priv_data; |
| int i; |
| |
| ff_huffyuv_common_end(s); |
| av_freep(&s->bitstream_buffer); |
| |
| for (i = 0; i < 8; i++) |
| ff_free_vlc(&s->vlc[i]); |
| |
| return 0; |
| } |
| |
| static av_cold int decode_init(AVCodecContext *avctx) |
| { |
| HYuvContext *s = avctx->priv_data; |
| int ret; |
| |
| ret = av_image_check_size(avctx->width, avctx->height, 0, avctx); |
| if (ret < 0) |
| return ret; |
| |
| ff_huffyuvdsp_init(&s->hdsp); |
| memset(s->vlc, 0, 4 * sizeof(VLC)); |
| |
| s->interlaced = avctx->height > 288; |
| s->bgr32 = 1; |
| |
| if (avctx->extradata_size) { |
| if ((avctx->bits_per_coded_sample & 7) && |
| avctx->bits_per_coded_sample != 12) |
| s->version = 1; // do such files exist at all? |
| else if (avctx->extradata_size > 3 && avctx->extradata[3] == 0) |
| s->version = 2; |
| else |
| s->version = 3; |
| } else |
| s->version = 0; |
| |
| s->bps = 8; |
| s->n = 1<<s->bps; |
| s->vlc_n = FFMIN(s->n, MAX_VLC_N); |
| s->chroma = 1; |
| if (s->version >= 2) { |
| int method, interlace; |
| |
| if (avctx->extradata_size < 4) |
| return AVERROR_INVALIDDATA; |
| |
| method = avctx->extradata[0]; |
| s->decorrelate = method & 64 ? 1 : 0; |
| s->predictor = method & 63; |
| if (s->version == 2) { |
| s->bitstream_bpp = avctx->extradata[1]; |
| if (s->bitstream_bpp == 0) |
| s->bitstream_bpp = avctx->bits_per_coded_sample & ~7; |
| } else { |
| s->bps = (avctx->extradata[1] >> 4) + 1; |
| s->n = 1<<s->bps; |
| s->vlc_n = FFMIN(s->n, MAX_VLC_N); |
| s->chroma_h_shift = avctx->extradata[1] & 3; |
| s->chroma_v_shift = (avctx->extradata[1] >> 2) & 3; |
| s->yuv = !!(avctx->extradata[2] & 1); |
| s->chroma= !!(avctx->extradata[2] & 3); |
| s->alpha = !!(avctx->extradata[2] & 4); |
| } |
| interlace = (avctx->extradata[2] & 0x30) >> 4; |
| s->interlaced = (interlace == 1) ? 1 : (interlace == 2) ? 0 : s->interlaced; |
| s->context = avctx->extradata[2] & 0x40 ? 1 : 0; |
| |
| if ((ret = read_huffman_tables(s, avctx->extradata + 4, |
| avctx->extradata_size - 4)) < 0) |
| goto error; |
| } else { |
| switch (avctx->bits_per_coded_sample & 7) { |
| case 1: |
| s->predictor = LEFT; |
| s->decorrelate = 0; |
| break; |
| case 2: |
| s->predictor = LEFT; |
| s->decorrelate = 1; |
| break; |
| case 3: |
| s->predictor = PLANE; |
| s->decorrelate = avctx->bits_per_coded_sample >= 24; |
| break; |
| case 4: |
| s->predictor = MEDIAN; |
| s->decorrelate = 0; |
| break; |
| default: |
| s->predictor = LEFT; // OLD |
| s->decorrelate = 0; |
| break; |
| } |
| s->bitstream_bpp = avctx->bits_per_coded_sample & ~7; |
| s->context = 0; |
| |
| if ((ret = read_old_huffman_tables(s)) < 0) |
| goto error; |
| } |
| |
| if (s->version <= 2) { |
| switch (s->bitstream_bpp) { |
| case 12: |
| avctx->pix_fmt = AV_PIX_FMT_YUV420P; |
| s->yuv = 1; |
| break; |
| case 16: |
| if (s->yuy2) |
| avctx->pix_fmt = AV_PIX_FMT_YUYV422; |
| else |
| avctx->pix_fmt = AV_PIX_FMT_YUV422P; |
| s->yuv = 1; |
| break; |
| case 24: |
| if (s->bgr32) |
| avctx->pix_fmt = AV_PIX_FMT_0RGB32; |
| else |
| avctx->pix_fmt = AV_PIX_FMT_BGR24; |
| break; |
| case 32: |
| av_assert0(s->bgr32); |
| avctx->pix_fmt = AV_PIX_FMT_RGB32; |
| s->alpha = 1; |
| break; |
| default: |
| ret = AVERROR_INVALIDDATA; |
| goto error; |
| } |
| av_pix_fmt_get_chroma_sub_sample(avctx->pix_fmt, |
| &s->chroma_h_shift, |
| &s->chroma_v_shift); |
| } else { |
| switch ( (s->chroma<<10) | (s->yuv<<9) | (s->alpha<<8) | ((s->bps-1)<<4) | s->chroma_h_shift | (s->chroma_v_shift<<2)) { |
| case 0x070: |
| avctx->pix_fmt = AV_PIX_FMT_GRAY8; |
| break; |
| case 0x0F0: |
| avctx->pix_fmt = AV_PIX_FMT_GRAY16; |
| break; |
| case 0x170: |
| avctx->pix_fmt = AV_PIX_FMT_GRAY8A; |
| break; |
| case 0x470: |
| avctx->pix_fmt = AV_PIX_FMT_GBRP; |
| break; |
| case 0x480: |
| avctx->pix_fmt = AV_PIX_FMT_GBRP9; |
| break; |
| case 0x490: |
| avctx->pix_fmt = AV_PIX_FMT_GBRP10; |
| break; |
| case 0x4B0: |
| avctx->pix_fmt = AV_PIX_FMT_GBRP12; |
| break; |
| case 0x4D0: |
| avctx->pix_fmt = AV_PIX_FMT_GBRP14; |
| break; |
| case 0x4F0: |
| avctx->pix_fmt = AV_PIX_FMT_GBRP16; |
| break; |
| case 0x570: |
| avctx->pix_fmt = AV_PIX_FMT_GBRAP; |
| break; |
| case 0x670: |
| avctx->pix_fmt = AV_PIX_FMT_YUV444P; |
| break; |
| case 0x680: |
| avctx->pix_fmt = AV_PIX_FMT_YUV444P9; |
| break; |
| case 0x690: |
| avctx->pix_fmt = AV_PIX_FMT_YUV444P10; |
| break; |
| case 0x6B0: |
| avctx->pix_fmt = AV_PIX_FMT_YUV444P12; |
| break; |
| case 0x6D0: |
| avctx->pix_fmt = AV_PIX_FMT_YUV444P14; |
| break; |
| case 0x6F0: |
| avctx->pix_fmt = AV_PIX_FMT_YUV444P16; |
| break; |
| case 0x671: |
| avctx->pix_fmt = AV_PIX_FMT_YUV422P; |
| break; |
| case 0x681: |
| avctx->pix_fmt = AV_PIX_FMT_YUV422P9; |
| break; |
| case 0x691: |
| avctx->pix_fmt = AV_PIX_FMT_YUV422P10; |
| break; |
| case 0x6B1: |
| avctx->pix_fmt = AV_PIX_FMT_YUV422P12; |
| break; |
| case 0x6D1: |
| avctx->pix_fmt = AV_PIX_FMT_YUV422P14; |
| break; |
| case 0x6F1: |
| avctx->pix_fmt = AV_PIX_FMT_YUV422P16; |
| break; |
| case 0x672: |
| avctx->pix_fmt = AV_PIX_FMT_YUV411P; |
| break; |
| case 0x674: |
| avctx->pix_fmt = AV_PIX_FMT_YUV440P; |
| break; |
| case 0x675: |
| avctx->pix_fmt = AV_PIX_FMT_YUV420P; |
| break; |
| case 0x685: |
| avctx->pix_fmt = AV_PIX_FMT_YUV420P9; |
| break; |
| case 0x695: |
| avctx->pix_fmt = AV_PIX_FMT_YUV420P10; |
| break; |
| case 0x6B5: |
| avctx->pix_fmt = AV_PIX_FMT_YUV420P12; |
| break; |
| case 0x6D5: |
| avctx->pix_fmt = AV_PIX_FMT_YUV420P14; |
| break; |
| case 0x6F5: |
| avctx->pix_fmt = AV_PIX_FMT_YUV420P16; |
| break; |
| case 0x67A: |
| avctx->pix_fmt = AV_PIX_FMT_YUV410P; |
| break; |
| case 0x770: |
| avctx->pix_fmt = AV_PIX_FMT_YUVA444P; |
| break; |
| case 0x780: |
| avctx->pix_fmt = AV_PIX_FMT_YUVA444P9; |
| break; |
| case 0x790: |
| avctx->pix_fmt = AV_PIX_FMT_YUVA444P10; |
| break; |
| case 0x7F0: |
| avctx->pix_fmt = AV_PIX_FMT_YUVA444P16; |
| break; |
| case 0x771: |
| avctx->pix_fmt = AV_PIX_FMT_YUVA422P; |
| break; |
| case 0x781: |
| avctx->pix_fmt = AV_PIX_FMT_YUVA422P9; |
| break; |
| case 0x791: |
| avctx->pix_fmt = AV_PIX_FMT_YUVA422P10; |
| break; |
| case 0x7F1: |
| avctx->pix_fmt = AV_PIX_FMT_YUVA422P16; |
| break; |
| case 0x775: |
| avctx->pix_fmt = AV_PIX_FMT_YUVA420P; |
| break; |
| case 0x785: |
| avctx->pix_fmt = AV_PIX_FMT_YUVA420P9; |
| break; |
| case 0x795: |
| avctx->pix_fmt = AV_PIX_FMT_YUVA420P10; |
| break; |
| case 0x7F5: |
| avctx->pix_fmt = AV_PIX_FMT_YUVA420P16; |
| break; |
| default: |
| ret = AVERROR_INVALIDDATA; |
| goto error; |
| } |
| } |
| |
| ff_huffyuv_common_init(avctx); |
| |
| if ((avctx->pix_fmt == AV_PIX_FMT_YUV422P || avctx->pix_fmt == AV_PIX_FMT_YUV420P) && avctx->width & 1) { |
| av_log(avctx, AV_LOG_ERROR, "width must be even for this colorspace\n"); |
| ret = AVERROR_INVALIDDATA; |
| goto error; |
| } |
| if (s->predictor == MEDIAN && avctx->pix_fmt == AV_PIX_FMT_YUV422P && |
| avctx->width % 4) { |
| av_log(avctx, AV_LOG_ERROR, "width must be a multiple of 4 " |
| "for this combination of colorspace and predictor type.\n"); |
| ret = AVERROR_INVALIDDATA; |
| goto error; |
| } |
| |
| if ((ret = ff_huffyuv_alloc_temp(s)) < 0) { |
| ff_huffyuv_common_end(s); |
| goto error; |
| } |
| |
| return 0; |
| error: |
| decode_end(avctx); |
| return ret; |
| } |
| |
| #if HAVE_THREADS |
| static av_cold int decode_init_thread_copy(AVCodecContext *avctx) |
| { |
| HYuvContext *s = avctx->priv_data; |
| int i, ret; |
| |
| if ((ret = ff_huffyuv_alloc_temp(s)) < 0) { |
| ff_huffyuv_common_end(s); |
| return ret; |
| } |
| |
| for (i = 0; i < 8; i++) |
| s->vlc[i].table = NULL; |
| |
| if (s->version >= 2) { |
| if ((ret = read_huffman_tables(s, avctx->extradata + 4, |
| avctx->extradata_size)) < 0) |
| return ret; |
| } else { |
| if ((ret = read_old_huffman_tables(s)) < 0) |
| return ret; |
| } |
| |
| return 0; |
| } |
| #endif |
| |
| /** Subset of GET_VLC for use in hand-roller VLC code */ |
| #define VLC_INTERN(dst, table, gb, name, bits, max_depth) \ |
| code = table[index][0]; \ |
| n = table[index][1]; \ |
| if (max_depth > 1 && n < 0) { \ |
| LAST_SKIP_BITS(name, gb, bits); \ |
| UPDATE_CACHE(name, gb); \ |
| \ |
| nb_bits = -n; \ |
| index = SHOW_UBITS(name, gb, nb_bits) + code; \ |
| code = table[index][0]; \ |
| n = table[index][1]; \ |
| if (max_depth > 2 && n < 0) { \ |
| LAST_SKIP_BITS(name, gb, nb_bits); \ |
| UPDATE_CACHE(name, gb); \ |
| \ |
| nb_bits = -n; \ |
| index = SHOW_UBITS(name, gb, nb_bits) + code; \ |
| code = table[index][0]; \ |
| n = table[index][1]; \ |
| } \ |
| } \ |
| dst = code; \ |
| LAST_SKIP_BITS(name, gb, n) |
| |
| |
| #define GET_VLC_DUAL(dst0, dst1, name, gb, dtable, table1, table2, \ |
| bits, max_depth, OP) \ |
| do { \ |
| unsigned int index = SHOW_UBITS(name, gb, bits); \ |
| int code, n = dtable[index][1]; \ |
| \ |
| if (n<=0) { \ |
| int nb_bits; \ |
| VLC_INTERN(dst0, table1, gb, name, bits, max_depth); \ |
| \ |
| UPDATE_CACHE(re, gb); \ |
| index = SHOW_UBITS(name, gb, bits); \ |
| VLC_INTERN(dst1, table2, gb, name, bits, max_depth); \ |
| } else { \ |
| code = dtable[index][0]; \ |
| OP(dst0, dst1, code); \ |
| LAST_SKIP_BITS(name, gb, n); \ |
| } \ |
| } while (0) |
| |
| #define OP8bits(dst0, dst1, code) dst0 = code>>8; dst1 = code |
| |
| #define READ_2PIX(dst0, dst1, plane1) \ |
| UPDATE_CACHE(re, &s->gb); \ |
| GET_VLC_DUAL(dst0, dst1, re, &s->gb, s->vlc[4+plane1].table, \ |
| s->vlc[0].table, s->vlc[plane1].table, VLC_BITS, 3, OP8bits) |
| |
| static void decode_422_bitstream(HYuvContext *s, int count) |
| { |
| int i, icount; |
| OPEN_READER(re, &s->gb); |
| count /= 2; |
| |
| icount = get_bits_left(&s->gb) / (32 * 4); |
| if (count >= icount) { |
| for (i = 0; i < icount; i++) { |
| READ_2PIX(s->temp[0][2 * i], s->temp[1][i], 1); |
| READ_2PIX(s->temp[0][2 * i + 1], s->temp[2][i], 2); |
| } |
| for (; i < count && BITS_LEFT(re, &s->gb) > 0; i++) { |
| READ_2PIX(s->temp[0][2 * i ], s->temp[1][i], 1); |
| if (BITS_LEFT(re, &s->gb) <= 0) break; |
| READ_2PIX(s->temp[0][2 * i + 1], s->temp[2][i], 2); |
| } |
| for (; i < count; i++) |
| s->temp[0][2 * i ] = s->temp[1][i] = |
| s->temp[0][2 * i + 1] = s->temp[2][i] = 0; |
| } else { |
| for (i = 0; i < count; i++) { |
| READ_2PIX(s->temp[0][2 * i], s->temp[1][i], 1); |
| READ_2PIX(s->temp[0][2 * i + 1], s->temp[2][i], 2); |
| } |
| } |
| CLOSE_READER(re, &s->gb); |
| } |
| |
| #define READ_2PIX_PLANE(dst0, dst1, plane, OP) \ |
| UPDATE_CACHE(re, &s->gb); \ |
| GET_VLC_DUAL(dst0, dst1, re, &s->gb, s->vlc[4+plane].table, \ |
| s->vlc[plane].table, s->vlc[plane].table, VLC_BITS, 3, OP) |
| |
| #define OP14bits(dst0, dst1, code) dst0 = code>>8; dst1 = sign_extend(code, 8) |
| |
| /* TODO instead of restarting the read when the code isn't in the first level |
| * of the joint table, jump into the 2nd level of the individual table. */ |
| #define READ_2PIX_PLANE16(dst0, dst1, plane){\ |
| dst0 = get_vlc2(&s->gb, s->vlc[plane].table, VLC_BITS, 3)<<2;\ |
| dst0 += get_bits(&s->gb, 2);\ |
| dst1 = get_vlc2(&s->gb, s->vlc[plane].table, VLC_BITS, 3)<<2;\ |
| dst1 += get_bits(&s->gb, 2);\ |
| } |
| static void decode_plane_bitstream(HYuvContext *s, int width, int plane) |
| { |
| int i, count = width/2; |
| |
| if (s->bps <= 8) { |
| OPEN_READER(re, &s->gb); |
| if (count >= (get_bits_left(&s->gb)) / (32 * 2)) { |
| for (i = 0; i < count && BITS_LEFT(re, &s->gb) > 0; i++) { |
| READ_2PIX_PLANE(s->temp[0][2 * i], s->temp[0][2 * i + 1], plane, OP8bits); |
| } |
| } else { |
| for(i=0; i<count; i++){ |
| READ_2PIX_PLANE(s->temp[0][2 * i], s->temp[0][2 * i + 1], plane, OP8bits); |
| } |
| } |
| if( width&1 && BITS_LEFT(re, &s->gb)>0 ) { |
| unsigned int index; |
| int nb_bits, code, n; |
| UPDATE_CACHE(re, &s->gb); |
| index = SHOW_UBITS(re, &s->gb, VLC_BITS); |
| VLC_INTERN(s->temp[0][width-1], s->vlc[plane].table, |
| &s->gb, re, VLC_BITS, 3); |
| } |
| CLOSE_READER(re, &s->gb); |
| } else if (s->bps <= 14) { |
| OPEN_READER(re, &s->gb); |
| if (count >= (get_bits_left(&s->gb)) / (32 * 2)) { |
| for (i = 0; i < count && BITS_LEFT(re, &s->gb) > 0; i++) { |
| READ_2PIX_PLANE(s->temp16[0][2 * i], s->temp16[0][2 * i + 1], plane, OP14bits); |
| } |
| } else { |
| for(i=0; i<count; i++){ |
| READ_2PIX_PLANE(s->temp16[0][2 * i], s->temp16[0][2 * i + 1], plane, OP14bits); |
| } |
| } |
| if( width&1 && BITS_LEFT(re, &s->gb)>0 ) { |
| unsigned int index; |
| int nb_bits, code, n; |
| UPDATE_CACHE(re, &s->gb); |
| index = SHOW_UBITS(re, &s->gb, VLC_BITS); |
| VLC_INTERN(s->temp16[0][width-1], s->vlc[plane].table, |
| &s->gb, re, VLC_BITS, 3); |
| } |
| CLOSE_READER(re, &s->gb); |
| } else { |
| if (count >= (get_bits_left(&s->gb)) / (32 * 2)) { |
| for (i = 0; i < count && get_bits_left(&s->gb) > 0; i++) { |
| READ_2PIX_PLANE16(s->temp16[0][2 * i], s->temp16[0][2 * i + 1], plane); |
| } |
| } else { |
| for(i=0; i<count; i++){ |
| READ_2PIX_PLANE16(s->temp16[0][2 * i], s->temp16[0][2 * i + 1], plane); |
| } |
| } |
| if( width&1 && get_bits_left(&s->gb)>0 ) { |
| int dst = get_vlc2(&s->gb, s->vlc[plane].table, VLC_BITS, 3)<<2; |
| s->temp16[0][width-1] = dst + get_bits(&s->gb, 2); |
| } |
| } |
| } |
| |
| static void decode_gray_bitstream(HYuvContext *s, int count) |
| { |
| int i; |
| OPEN_READER(re, &s->gb); |
| count /= 2; |
| |
| if (count >= (get_bits_left(&s->gb)) / (32 * 2)) { |
| for (i = 0; i < count && BITS_LEFT(re, &s->gb) > 0; i++) { |
| READ_2PIX(s->temp[0][2 * i], s->temp[0][2 * i + 1], 0); |
| } |
| } else { |
| for (i = 0; i < count; i++) { |
| READ_2PIX(s->temp[0][2 * i], s->temp[0][2 * i + 1], 0); |
| } |
| } |
| CLOSE_READER(re, &s->gb); |
| } |
| |
| static av_always_inline void decode_bgr_1(HYuvContext *s, int count, |
| int decorrelate, int alpha) |
| { |
| int i; |
| OPEN_READER(re, &s->gb); |
| |
| for (i = 0; i < count && BITS_LEFT(re, &s->gb) > 0; i++) { |
| unsigned int index; |
| int code, n, nb_bits; |
| |
| UPDATE_CACHE(re, &s->gb); |
| index = SHOW_UBITS(re, &s->gb, VLC_BITS); |
| n = s->vlc[4].table[index][1]; |
| |
| if (n>0) { |
| code = s->vlc[4].table[index][0]; |
| *(uint32_t *) &s->temp[0][4 * i] = s->pix_bgr_map[code]; |
| LAST_SKIP_BITS(re, &s->gb, n); |
| } else { |
| if (decorrelate) { |
| VLC_INTERN(s->temp[0][4 * i + G], s->vlc[1].table, |
| &s->gb, re, VLC_BITS, 3); |
| |
| UPDATE_CACHE(re, &s->gb); |
| index = SHOW_UBITS(re, &s->gb, VLC_BITS); |
| VLC_INTERN(code, s->vlc[0].table, &s->gb, re, VLC_BITS, 3); |
| s->temp[0][4 * i + B] = code + s->temp[0][4 * i + G]; |
| |
| UPDATE_CACHE(re, &s->gb); |
| index = SHOW_UBITS(re, &s->gb, VLC_BITS); |
| VLC_INTERN(code, s->vlc[2].table, &s->gb, re, VLC_BITS, 3); |
| s->temp[0][4 * i + R] = code + s->temp[0][4 * i + G]; |
| } else { |
| VLC_INTERN(s->temp[0][4 * i + B], s->vlc[0].table, |
| &s->gb, re, VLC_BITS, 3); |
| |
| UPDATE_CACHE(re, &s->gb); |
| index = SHOW_UBITS(re, &s->gb, VLC_BITS); |
| VLC_INTERN(s->temp[0][4 * i + G], s->vlc[1].table, |
| &s->gb, re, VLC_BITS, 3); |
| |
| UPDATE_CACHE(re, &s->gb); |
| index = SHOW_UBITS(re, &s->gb, VLC_BITS); |
| VLC_INTERN(s->temp[0][4 * i + R], s->vlc[2].table, |
| &s->gb, re, VLC_BITS, 3); |
| } |
| } |
| if (alpha) { |
| UPDATE_CACHE(re, &s->gb); |
| index = SHOW_UBITS(re, &s->gb, VLC_BITS); |
| VLC_INTERN(s->temp[0][4 * i + A], s->vlc[2].table, |
| &s->gb, re, VLC_BITS, 3); |
| } else |
| s->temp[0][4 * i + A] = 0; |
| } |
| CLOSE_READER(re, &s->gb); |
| } |
| |
| static void decode_bgr_bitstream(HYuvContext *s, int count) |
| { |
| if (s->decorrelate) { |
| if (s->bitstream_bpp == 24) |
| decode_bgr_1(s, count, 1, 0); |
| else |
| decode_bgr_1(s, count, 1, 1); |
| } else { |
| if (s->bitstream_bpp == 24) |
| decode_bgr_1(s, count, 0, 0); |
| else |
| decode_bgr_1(s, count, 0, 1); |
| } |
| } |
| |
| static void draw_slice(HYuvContext *s, AVFrame *frame, int y) |
| { |
| int h, cy, i; |
| int offset[AV_NUM_DATA_POINTERS]; |
| |
| if (!s->avctx->draw_horiz_band) |
| return; |
| |
| h = y - s->last_slice_end; |
| y -= h; |
| |
| if (s->bitstream_bpp == 12) |
| cy = y >> 1; |
| else |
| cy = y; |
| |
| offset[0] = frame->linesize[0] * y; |
| offset[1] = frame->linesize[1] * cy; |
| offset[2] = frame->linesize[2] * cy; |
| for (i = 3; i < AV_NUM_DATA_POINTERS; i++) |
| offset[i] = 0; |
| emms_c(); |
| |
| s->avctx->draw_horiz_band(s->avctx, frame, offset, y, 3, h); |
| |
| s->last_slice_end = y + h; |
| } |
| |
| static int left_prediction(HYuvContext *s, uint8_t *dst, const uint8_t *src, int w, int acc) |
| { |
| if (s->bps <= 8) { |
| return s->hdsp.add_hfyu_left_pred(dst, src, w, acc); |
| } else { |
| return s->llviddsp.add_hfyu_left_pred_int16(( uint16_t *)dst, (const uint16_t *)src, s->n-1, w, acc); |
| } |
| } |
| |
| static void add_bytes(HYuvContext *s, uint8_t *dst, uint8_t *src, int w) |
| { |
| if (s->bps <= 8) { |
| s->hdsp.add_bytes(dst, src, w); |
| } else { |
| s->llviddsp.add_int16((uint16_t*)dst, (const uint16_t*)src, s->n - 1, w); |
| } |
| } |
| |
| static void add_median_prediction(HYuvContext *s, uint8_t *dst, const uint8_t *src, const uint8_t *diff, int w, int *left, int *left_top) |
| { |
| if (s->bps <= 8) { |
| s->hdsp.add_hfyu_median_pred(dst, src, diff, w, left, left_top); |
| } else { |
| s->llviddsp.add_hfyu_median_pred_int16((uint16_t *)dst, (const uint16_t *)src, (const uint16_t *)diff, s->n-1, w, left, left_top); |
| } |
| } |
| static int decode_frame(AVCodecContext *avctx, void *data, int *got_frame, |
| AVPacket *avpkt) |
| { |
| const uint8_t *buf = avpkt->data; |
| int buf_size = avpkt->size; |
| HYuvContext *s = avctx->priv_data; |
| const int width = s->width; |
| const int width2 = s->width >> 1; |
| const int height = s->height; |
| int fake_ystride, fake_ustride, fake_vstride; |
| ThreadFrame frame = { .f = data }; |
| AVFrame *const p = data; |
| int table_size = 0, ret; |
| |
| av_fast_padded_malloc(&s->bitstream_buffer, |
| &s->bitstream_buffer_size, |
| buf_size); |
| if (!s->bitstream_buffer) |
| return AVERROR(ENOMEM); |
| |
| s->bdsp.bswap_buf((uint32_t *) s->bitstream_buffer, |
| (const uint32_t *) buf, buf_size / 4); |
| |
| if ((ret = ff_thread_get_buffer(avctx, &frame, 0)) < 0) |
| return ret; |
| |
| if (s->context) { |
| table_size = read_huffman_tables(s, s->bitstream_buffer, buf_size); |
| if (table_size < 0) |
| return table_size; |
| } |
| |
| if ((unsigned) (buf_size - table_size) >= INT_MAX / 8) |
| return AVERROR_INVALIDDATA; |
| |
| if ((ret = init_get_bits(&s->gb, s->bitstream_buffer + table_size, |
| (buf_size - table_size) * 8)) < 0) |
| return ret; |
| |
| fake_ystride = s->interlaced ? p->linesize[0] * 2 : p->linesize[0]; |
| fake_ustride = s->interlaced ? p->linesize[1] * 2 : p->linesize[1]; |
| fake_vstride = s->interlaced ? p->linesize[2] * 2 : p->linesize[2]; |
| |
| s->last_slice_end = 0; |
| |
| if (s->version > 2) { |
| int plane; |
| for(plane = 0; plane < 1 + 2*s->chroma + s->alpha; plane++) { |
| int left, lefttop, y; |
| int w = width; |
| int h = height; |
| int fake_stride = fake_ystride; |
| |
| if (s->chroma && (plane == 1 || plane == 2)) { |
| w >>= s->chroma_h_shift; |
| h >>= s->chroma_v_shift; |
| fake_stride = plane == 1 ? fake_ustride : fake_vstride; |
| } |
| |
| switch (s->predictor) { |
| case LEFT: |
| case PLANE: |
| decode_plane_bitstream(s, w, plane); |
| left = left_prediction(s, p->data[plane], s->temp[0], w, 0); |
| |
| for (y = 1; y < h; y++) { |
| uint8_t *dst = p->data[plane] + p->linesize[plane]*y; |
| |
| decode_plane_bitstream(s, w, plane); |
| left = left_prediction(s, dst, s->temp[0], w, left); |
| if (s->predictor == PLANE) { |
| if (y > s->interlaced) { |
| add_bytes(s, dst, dst - fake_stride, w); |
| } |
| } |
| } |
| |
| break; |
| case MEDIAN: |
| decode_plane_bitstream(s, w, plane); |
| left= left_prediction(s, p->data[plane], s->temp[0], w, 0); |
| |
| y = 1; |
| |
| /* second line is left predicted for interlaced case */ |
| if (s->interlaced) { |
| decode_plane_bitstream(s, w, plane); |
| left = left_prediction(s, p->data[plane] + p->linesize[plane], s->temp[0], w, left); |
| y++; |
| } |
| |
| lefttop = p->data[plane][0]; |
| decode_plane_bitstream(s, w, plane); |
| add_median_prediction(s, p->data[plane] + fake_stride, p->data[plane], s->temp[0], w, &left, &lefttop); |
| y++; |
| |
| for (; y<h; y++) { |
| uint8_t *dst; |
| |
| decode_plane_bitstream(s, w, plane); |
| |
| dst = p->data[plane] + p->linesize[plane] * y; |
| |
| add_median_prediction(s, dst, dst - fake_stride, s->temp[0], w, &left, &lefttop); |
| } |
| |
| break; |
| } |
| } |
| draw_slice(s, p, height); |
| } else if (s->bitstream_bpp < 24) { |
| int y, cy; |
| int lefty, leftu, leftv; |
| int lefttopy, lefttopu, lefttopv; |
| |
| if (s->yuy2) { |
| p->data[0][3] = get_bits(&s->gb, 8); |
| p->data[0][2] = get_bits(&s->gb, 8); |
| p->data[0][1] = get_bits(&s->gb, 8); |
| p->data[0][0] = get_bits(&s->gb, 8); |
| |
| av_log(avctx, AV_LOG_ERROR, |
| "YUY2 output is not implemented yet\n"); |
| return AVERROR_PATCHWELCOME; |
| } else { |
| leftv = |
| p->data[2][0] = get_bits(&s->gb, 8); |
| lefty = |
| p->data[0][1] = get_bits(&s->gb, 8); |
| leftu = |
| p->data[1][0] = get_bits(&s->gb, 8); |
| p->data[0][0] = get_bits(&s->gb, 8); |
| |
| switch (s->predictor) { |
| case LEFT: |
| case PLANE: |
| decode_422_bitstream(s, width - 2); |
| lefty = s->hdsp.add_hfyu_left_pred(p->data[0] + 2, s->temp[0], |
| width - 2, lefty); |
| if (!(s->flags & AV_CODEC_FLAG_GRAY)) { |
| leftu = s->hdsp.add_hfyu_left_pred(p->data[1] + 1, s->temp[1], width2 - 1, leftu); |
| leftv = s->hdsp.add_hfyu_left_pred(p->data[2] + 1, s->temp[2], width2 - 1, leftv); |
| } |
| |
| for (cy = y = 1; y < s->height; y++, cy++) { |
| uint8_t *ydst, *udst, *vdst; |
| |
| if (s->bitstream_bpp == 12) { |
| decode_gray_bitstream(s, width); |
| |
| ydst = p->data[0] + p->linesize[0] * y; |
| |
| lefty = s->hdsp.add_hfyu_left_pred(ydst, s->temp[0], |
| width, lefty); |
| if (s->predictor == PLANE) { |
| if (y > s->interlaced) |
| s->hdsp.add_bytes(ydst, ydst - fake_ystride, width); |
| } |
| y++; |
| if (y >= s->height) |
| break; |
| } |
| |
| draw_slice(s, p, y); |
| |
| ydst = p->data[0] + p->linesize[0] * y; |
| udst = p->data[1] + p->linesize[1] * cy; |
| vdst = p->data[2] + p->linesize[2] * cy; |
| |
| decode_422_bitstream(s, width); |
| lefty = s->hdsp.add_hfyu_left_pred(ydst, s->temp[0], |
| width, lefty); |
| if (!(s->flags & AV_CODEC_FLAG_GRAY)) { |
| leftu = s->hdsp.add_hfyu_left_pred(udst, s->temp[1], width2, leftu); |
| leftv = s->hdsp.add_hfyu_left_pred(vdst, s->temp[2], width2, leftv); |
| } |
| if (s->predictor == PLANE) { |
| if (cy > s->interlaced) { |
| s->hdsp.add_bytes(ydst, ydst - fake_ystride, width); |
| if (!(s->flags & AV_CODEC_FLAG_GRAY)) { |
| s->hdsp.add_bytes(udst, udst - fake_ustride, width2); |
| s->hdsp.add_bytes(vdst, vdst - fake_vstride, width2); |
| } |
| } |
| } |
| } |
| draw_slice(s, p, height); |
| |
| break; |
| case MEDIAN: |
| /* first line except first 2 pixels is left predicted */ |
| decode_422_bitstream(s, width - 2); |
| lefty = s->hdsp.add_hfyu_left_pred(p->data[0] + 2, s->temp[0], |
| width - 2, lefty); |
| if (!(s->flags & AV_CODEC_FLAG_GRAY)) { |
| leftu = s->hdsp.add_hfyu_left_pred(p->data[1] + 1, s->temp[1], width2 - 1, leftu); |
| leftv = s->hdsp.add_hfyu_left_pred(p->data[2] + 1, s->temp[2], width2 - 1, leftv); |
| } |
| |
| cy = y = 1; |
| |
| /* second line is left predicted for interlaced case */ |
| if (s->interlaced) { |
| decode_422_bitstream(s, width); |
| lefty = s->hdsp.add_hfyu_left_pred(p->data[0] + p->linesize[0], |
| s->temp[0], width, lefty); |
| if (!(s->flags & AV_CODEC_FLAG_GRAY)) { |
| leftu = s->hdsp.add_hfyu_left_pred(p->data[1] + p->linesize[2], s->temp[1], width2, leftu); |
| leftv = s->hdsp.add_hfyu_left_pred(p->data[2] + p->linesize[1], s->temp[2], width2, leftv); |
| } |
| y++; |
| cy++; |
| } |
| |
| /* next 4 pixels are left predicted too */ |
| decode_422_bitstream(s, 4); |
| lefty = s->hdsp.add_hfyu_left_pred(p->data[0] + fake_ystride, |
| s->temp[0], 4, lefty); |
| if (!(s->flags & AV_CODEC_FLAG_GRAY)) { |
| leftu = s->hdsp.add_hfyu_left_pred(p->data[1] + fake_ustride, s->temp[1], 2, leftu); |
| leftv = s->hdsp.add_hfyu_left_pred(p->data[2] + fake_vstride, s->temp[2], 2, leftv); |
| } |
| |
| /* next line except the first 4 pixels is median predicted */ |
| lefttopy = p->data[0][3]; |
| decode_422_bitstream(s, width - 4); |
| s->hdsp.add_hfyu_median_pred(p->data[0] + fake_ystride + 4, |
| p->data[0] + 4, s->temp[0], |
| width - 4, &lefty, &lefttopy); |
| if (!(s->flags & AV_CODEC_FLAG_GRAY)) { |
| lefttopu = p->data[1][1]; |
| lefttopv = p->data[2][1]; |
| s->hdsp.add_hfyu_median_pred(p->data[1] + fake_ustride + 2, p->data[1] + 2, s->temp[1], width2 - 2, &leftu, &lefttopu); |
| s->hdsp.add_hfyu_median_pred(p->data[2] + fake_vstride + 2, p->data[2] + 2, s->temp[2], width2 - 2, &leftv, &lefttopv); |
| } |
| y++; |
| cy++; |
| |
| for (; y < height; y++, cy++) { |
| uint8_t *ydst, *udst, *vdst; |
| |
| if (s->bitstream_bpp == 12) { |
| while (2 * cy > y) { |
| decode_gray_bitstream(s, width); |
| ydst = p->data[0] + p->linesize[0] * y; |
| s->hdsp.add_hfyu_median_pred(ydst, ydst - fake_ystride, |
| s->temp[0], width, |
| &lefty, &lefttopy); |
| y++; |
| } |
| if (y >= height) |
| break; |
| } |
| draw_slice(s, p, y); |
| |
| decode_422_bitstream(s, width); |
| |
| ydst = p->data[0] + p->linesize[0] * y; |
| udst = p->data[1] + p->linesize[1] * cy; |
| vdst = p->data[2] + p->linesize[2] * cy; |
| |
| s->hdsp.add_hfyu_median_pred(ydst, ydst - fake_ystride, |
| s->temp[0], width, |
| &lefty, &lefttopy); |
| if (!(s->flags & AV_CODEC_FLAG_GRAY)) { |
| s->hdsp.add_hfyu_median_pred(udst, udst - fake_ustride, s->temp[1], width2, &leftu, &lefttopu); |
| s->hdsp.add_hfyu_median_pred(vdst, vdst - fake_vstride, s->temp[2], width2, &leftv, &lefttopv); |
| } |
| } |
| |
| draw_slice(s, p, height); |
| break; |
| } |
| } |
| } else { |
| int y; |
| uint8_t left[4]; |
| const int last_line = (height - 1) * p->linesize[0]; |
| |
| if (s->bitstream_bpp == 32) { |
| left[A] = p->data[0][last_line + A] = get_bits(&s->gb, 8); |
| left[R] = p->data[0][last_line + R] = get_bits(&s->gb, 8); |
| left[G] = p->data[0][last_line + G] = get_bits(&s->gb, 8); |
| left[B] = p->data[0][last_line + B] = get_bits(&s->gb, 8); |
| } else { |
| left[R] = p->data[0][last_line + R] = get_bits(&s->gb, 8); |
| left[G] = p->data[0][last_line + G] = get_bits(&s->gb, 8); |
| left[B] = p->data[0][last_line + B] = get_bits(&s->gb, 8); |
| left[A] = p->data[0][last_line + A] = 255; |
| skip_bits(&s->gb, 8); |
| } |
| |
| if (s->bgr32) { |
| switch (s->predictor) { |
| case LEFT: |
| case PLANE: |
| decode_bgr_bitstream(s, width - 1); |
| s->hdsp.add_hfyu_left_pred_bgr32(p->data[0] + last_line + 4, |
| s->temp[0], width - 1, left); |
| |
| for (y = s->height - 2; y >= 0; y--) { // Yes it is stored upside down. |
| decode_bgr_bitstream(s, width); |
| |
| s->hdsp.add_hfyu_left_pred_bgr32(p->data[0] + p->linesize[0] * y, |
| s->temp[0], width, left); |
| if (s->predictor == PLANE) { |
| if (s->bitstream_bpp != 32) |
| left[A] = 0; |
| if (y < s->height - 1 - s->interlaced) { |
| s->hdsp.add_bytes(p->data[0] + p->linesize[0] * y, |
| p->data[0] + p->linesize[0] * y + |
| fake_ystride, 4 * width); |
| } |
| } |
| } |
| // just 1 large slice as this is not possible in reverse order |
| draw_slice(s, p, height); |
| break; |
| default: |
| av_log(avctx, AV_LOG_ERROR, |
| "prediction type not supported!\n"); |
| } |
| } else { |
| av_log(avctx, AV_LOG_ERROR, |
| "BGR24 output is not implemented yet\n"); |
| return AVERROR_PATCHWELCOME; |
| } |
| } |
| emms_c(); |
| |
| *got_frame = 1; |
| |
| return (get_bits_count(&s->gb) + 31) / 32 * 4 + table_size; |
| } |
| |
| AVCodec ff_huffyuv_decoder = { |
| .name = "huffyuv", |
| .long_name = NULL_IF_CONFIG_SMALL("Huffyuv / HuffYUV"), |
| .type = AVMEDIA_TYPE_VIDEO, |
| .id = AV_CODEC_ID_HUFFYUV, |
| .priv_data_size = sizeof(HYuvContext), |
| .init = decode_init, |
| .close = decode_end, |
| .decode = decode_frame, |
| .capabilities = AV_CODEC_CAP_DR1 | AV_CODEC_CAP_DRAW_HORIZ_BAND | |
| AV_CODEC_CAP_FRAME_THREADS, |
| .init_thread_copy = ONLY_IF_THREADS_ENABLED(decode_init_thread_copy), |
| }; |
| |
| #if CONFIG_FFVHUFF_DECODER |
| AVCodec ff_ffvhuff_decoder = { |
| .name = "ffvhuff", |
| .long_name = NULL_IF_CONFIG_SMALL("Huffyuv FFmpeg variant"), |
| .type = AVMEDIA_TYPE_VIDEO, |
| .id = AV_CODEC_ID_FFVHUFF, |
| .priv_data_size = sizeof(HYuvContext), |
| .init = decode_init, |
| .close = decode_end, |
| .decode = decode_frame, |
| .capabilities = AV_CODEC_CAP_DR1 | AV_CODEC_CAP_DRAW_HORIZ_BAND | |
| AV_CODEC_CAP_FRAME_THREADS, |
| .init_thread_copy = ONLY_IF_THREADS_ENABLED(decode_init_thread_copy), |
| }; |
| #endif /* CONFIG_FFVHUFF_DECODER */ |
