mirror of
https://github.com/pineappleEA/pineapple-src.git
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1315 lines
48 KiB
C
Executable File
1315 lines
48 KiB
C
Executable File
/*
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* huffyuv decoder
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*
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* Copyright (c) 2002-2014 Michael Niedermayer <michaelni@gmx.at>
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*
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* see http://www.pcisys.net/~melanson/codecs/huffyuv.txt for a description of
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* the algorithm used
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*
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* This file is part of FFmpeg.
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*
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* FFmpeg is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* FFmpeg is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with FFmpeg; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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*
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* yuva, gray, 4:4:4, 4:1:1, 4:1:0 and >8 bit per sample support sponsored by NOA
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*/
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/**
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* @file
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* huffyuv decoder
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*/
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#define UNCHECKED_BITSTREAM_READER 1
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#include "avcodec.h"
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#include "get_bits.h"
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#include "huffyuv.h"
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#include "huffyuvdsp.h"
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#include "lossless_videodsp.h"
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#include "thread.h"
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#include "libavutil/imgutils.h"
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#include "libavutil/pixdesc.h"
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#define classic_shift_luma_table_size 42
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static const unsigned char classic_shift_luma[classic_shift_luma_table_size + AV_INPUT_BUFFER_PADDING_SIZE] = {
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34, 36, 35, 69, 135, 232, 9, 16, 10, 24, 11, 23, 12, 16, 13, 10,
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14, 8, 15, 8, 16, 8, 17, 20, 16, 10, 207, 206, 205, 236, 11, 8,
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10, 21, 9, 23, 8, 8, 199, 70, 69, 68, 0,
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0,0,0,0,0,0,0,0,
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};
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#define classic_shift_chroma_table_size 59
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static const unsigned char classic_shift_chroma[classic_shift_chroma_table_size + AV_INPUT_BUFFER_PADDING_SIZE] = {
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66, 36, 37, 38, 39, 40, 41, 75, 76, 77, 110, 239, 144, 81, 82, 83,
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84, 85, 118, 183, 56, 57, 88, 89, 56, 89, 154, 57, 58, 57, 26, 141,
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57, 56, 58, 57, 58, 57, 184, 119, 214, 245, 116, 83, 82, 49, 80, 79,
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78, 77, 44, 75, 41, 40, 39, 38, 37, 36, 34, 0,
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0,0,0,0,0,0,0,0,
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};
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static const unsigned char classic_add_luma[256] = {
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3, 9, 5, 12, 10, 35, 32, 29, 27, 50, 48, 45, 44, 41, 39, 37,
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73, 70, 68, 65, 64, 61, 58, 56, 53, 50, 49, 46, 44, 41, 38, 36,
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68, 65, 63, 61, 58, 55, 53, 51, 48, 46, 45, 43, 41, 39, 38, 36,
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35, 33, 32, 30, 29, 27, 26, 25, 48, 47, 46, 44, 43, 41, 40, 39,
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37, 36, 35, 34, 32, 31, 30, 28, 27, 26, 24, 23, 22, 20, 19, 37,
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35, 34, 33, 31, 30, 29, 27, 26, 24, 23, 21, 20, 18, 17, 15, 29,
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27, 26, 24, 22, 21, 19, 17, 16, 14, 26, 25, 23, 21, 19, 18, 16,
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15, 27, 25, 23, 21, 19, 17, 16, 14, 26, 25, 23, 21, 18, 17, 14,
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12, 17, 19, 13, 4, 9, 2, 11, 1, 7, 8, 0, 16, 3, 14, 6,
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12, 10, 5, 15, 18, 11, 10, 13, 15, 16, 19, 20, 22, 24, 27, 15,
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18, 20, 22, 24, 26, 14, 17, 20, 22, 24, 27, 15, 18, 20, 23, 25,
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28, 16, 19, 22, 25, 28, 32, 36, 21, 25, 29, 33, 38, 42, 45, 49,
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28, 31, 34, 37, 40, 42, 44, 47, 49, 50, 52, 54, 56, 57, 59, 60,
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62, 64, 66, 67, 69, 35, 37, 39, 40, 42, 43, 45, 47, 48, 51, 52,
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54, 55, 57, 59, 60, 62, 63, 66, 67, 69, 71, 72, 38, 40, 42, 43,
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46, 47, 49, 51, 26, 28, 30, 31, 33, 34, 18, 19, 11, 13, 7, 8,
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};
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static const unsigned char classic_add_chroma[256] = {
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3, 1, 2, 2, 2, 2, 3, 3, 7, 5, 7, 5, 8, 6, 11, 9,
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7, 13, 11, 10, 9, 8, 7, 5, 9, 7, 6, 4, 7, 5, 8, 7,
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11, 8, 13, 11, 19, 15, 22, 23, 20, 33, 32, 28, 27, 29, 51, 77,
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43, 45, 76, 81, 46, 82, 75, 55, 56, 144, 58, 80, 60, 74, 147, 63,
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143, 65, 66, 67, 68, 69, 70, 71, 72, 73, 74, 75, 76, 77, 78, 79,
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80, 81, 82, 83, 84, 85, 86, 87, 88, 89, 90, 91, 27, 30, 21, 22,
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17, 14, 5, 6, 100, 54, 47, 50, 51, 53, 106, 107, 108, 109, 110, 111,
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112, 113, 114, 115, 4, 117, 118, 92, 94, 121, 122, 3, 124, 103, 2, 1,
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0, 129, 130, 131, 120, 119, 126, 125, 136, 137, 138, 139, 140, 141, 142, 134,
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135, 132, 133, 104, 64, 101, 62, 57, 102, 95, 93, 59, 61, 28, 97, 96,
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52, 49, 48, 29, 32, 25, 24, 46, 23, 98, 45, 44, 43, 20, 42, 41,
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19, 18, 99, 40, 15, 39, 38, 16, 13, 12, 11, 37, 10, 9, 8, 36,
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7, 128, 127, 105, 123, 116, 35, 34, 33, 145, 31, 79, 42, 146, 78, 26,
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83, 48, 49, 50, 44, 47, 26, 31, 30, 18, 17, 19, 21, 24, 25, 13,
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14, 16, 17, 18, 20, 21, 12, 14, 15, 9, 10, 6, 9, 6, 5, 8,
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6, 12, 8, 10, 7, 9, 6, 4, 6, 2, 2, 3, 3, 3, 3, 2,
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};
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static int read_len_table(uint8_t *dst, GetBitContext *gb, int n)
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{
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int i, val, repeat;
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for (i = 0; i < n;) {
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repeat = get_bits(gb, 3);
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val = get_bits(gb, 5);
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if (repeat == 0)
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repeat = get_bits(gb, 8);
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if (i + repeat > n || get_bits_left(gb) < 0) {
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av_log(NULL, AV_LOG_ERROR, "Error reading huffman table\n");
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return AVERROR_INVALIDDATA;
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}
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while (repeat--)
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dst[i++] = val;
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}
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return 0;
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}
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static int generate_joint_tables(HYuvContext *s)
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{
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int ret;
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uint16_t *symbols = av_mallocz(5 << VLC_BITS);
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uint16_t *bits;
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uint8_t *len;
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if (!symbols)
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return AVERROR(ENOMEM);
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bits = symbols + (1 << VLC_BITS);
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len = (uint8_t *)(bits + (1 << VLC_BITS));
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if (s->bitstream_bpp < 24 || s->version > 2) {
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int p, i, y, u;
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for (p = 0; p < 4; p++) {
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int p0 = s->version > 2 ? p : 0;
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for (i = y = 0; y < s->vlc_n; y++) {
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int len0 = s->len[p0][y];
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int limit = VLC_BITS - len0;
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if (limit <= 0 || !len0)
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continue;
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if ((sign_extend(y, 8) & (s->vlc_n-1)) != y)
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continue;
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for (u = 0; u < s->vlc_n; u++) {
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int len1 = s->len[p][u];
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if (len1 > limit || !len1)
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continue;
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if ((sign_extend(u, 8) & (s->vlc_n-1)) != u)
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continue;
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av_assert0(i < (1 << VLC_BITS));
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len[i] = len0 + len1;
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bits[i] = (s->bits[p0][y] << len1) + s->bits[p][u];
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symbols[i] = (y << 8) + (u & 0xFF);
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i++;
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}
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}
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ff_free_vlc(&s->vlc[4 + p]);
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if ((ret = ff_init_vlc_sparse(&s->vlc[4 + p], VLC_BITS, i, len, 1, 1,
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bits, 2, 2, symbols, 2, 2, 0)) < 0)
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goto out;
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}
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} else {
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uint8_t (*map)[4] = (uint8_t(*)[4]) s->pix_bgr_map;
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int i, b, g, r, code;
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int p0 = s->decorrelate;
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int p1 = !s->decorrelate;
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/* Restrict the range to +/-16 because that's pretty much guaranteed
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* to cover all the combinations that fit in 11 bits total, and it
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* does not matter if we miss a few rare codes. */
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for (i = 0, g = -16; g < 16; g++) {
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int len0 = s->len[p0][g & 255];
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int limit0 = VLC_BITS - len0;
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if (limit0 < 2 || !len0)
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continue;
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for (b = -16; b < 16; b++) {
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int len1 = s->len[p1][b & 255];
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int limit1 = limit0 - len1;
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if (limit1 < 1 || !len1)
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continue;
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code = (s->bits[p0][g & 255] << len1) + s->bits[p1][b & 255];
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for (r = -16; r < 16; r++) {
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int len2 = s->len[2][r & 255];
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if (len2 > limit1 || !len2)
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continue;
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av_assert0(i < (1 << VLC_BITS));
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len[i] = len0 + len1 + len2;
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bits[i] = (code << len2) + s->bits[2][r & 255];
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if (s->decorrelate) {
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map[i][G] = g;
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map[i][B] = g + b;
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map[i][R] = g + r;
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} else {
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map[i][B] = g;
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map[i][G] = b;
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map[i][R] = r;
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}
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i++;
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}
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}
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}
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ff_free_vlc(&s->vlc[4]);
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if ((ret = init_vlc(&s->vlc[4], VLC_BITS, i, len, 1, 1,
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bits, 2, 2, 0)) < 0)
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goto out;
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}
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ret = 0;
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out:
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av_freep(&symbols);
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return ret;
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}
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static int read_huffman_tables(HYuvContext *s, const uint8_t *src, int length)
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{
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GetBitContext gb;
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int i, ret;
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int count = 3;
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if ((ret = init_get_bits(&gb, src, length * 8)) < 0)
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return ret;
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if (s->version > 2)
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count = 1 + s->alpha + 2*s->chroma;
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for (i = 0; i < count; i++) {
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if ((ret = read_len_table(s->len[i], &gb, s->vlc_n)) < 0)
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return ret;
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if ((ret = ff_huffyuv_generate_bits_table(s->bits[i], s->len[i], s->vlc_n)) < 0)
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return ret;
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ff_free_vlc(&s->vlc[i]);
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if ((ret = init_vlc(&s->vlc[i], VLC_BITS, s->vlc_n, s->len[i], 1, 1,
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s->bits[i], 4, 4, 0)) < 0)
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return ret;
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}
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if ((ret = generate_joint_tables(s)) < 0)
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return ret;
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return (get_bits_count(&gb) + 7) / 8;
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}
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static int read_old_huffman_tables(HYuvContext *s)
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{
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GetBitContext gb;
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int i, ret;
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init_get_bits(&gb, classic_shift_luma,
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classic_shift_luma_table_size * 8);
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if ((ret = read_len_table(s->len[0], &gb, 256)) < 0)
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return ret;
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init_get_bits(&gb, classic_shift_chroma,
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classic_shift_chroma_table_size * 8);
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if ((ret = read_len_table(s->len[1], &gb, 256)) < 0)
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return ret;
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for (i = 0; i < 256; i++)
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s->bits[0][i] = classic_add_luma[i];
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for (i = 0; i < 256; i++)
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s->bits[1][i] = classic_add_chroma[i];
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if (s->bitstream_bpp >= 24) {
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memcpy(s->bits[1], s->bits[0], 256 * sizeof(uint32_t));
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memcpy(s->len[1], s->len[0], 256 * sizeof(uint8_t));
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}
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memcpy(s->bits[2], s->bits[1], 256 * sizeof(uint32_t));
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memcpy(s->len[2], s->len[1], 256 * sizeof(uint8_t));
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for (i = 0; i < 4; i++) {
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ff_free_vlc(&s->vlc[i]);
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if ((ret = init_vlc(&s->vlc[i], VLC_BITS, 256, s->len[i], 1, 1,
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s->bits[i], 4, 4, 0)) < 0)
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return ret;
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}
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if ((ret = generate_joint_tables(s)) < 0)
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return ret;
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return 0;
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}
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static av_cold int decode_end(AVCodecContext *avctx)
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{
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HYuvContext *s = avctx->priv_data;
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int i;
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ff_huffyuv_common_end(s);
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av_freep(&s->bitstream_buffer);
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for (i = 0; i < 8; i++)
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ff_free_vlc(&s->vlc[i]);
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return 0;
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}
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static av_cold int decode_init(AVCodecContext *avctx)
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{
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HYuvContext *s = avctx->priv_data;
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int ret;
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ret = av_image_check_size(avctx->width, avctx->height, 0, avctx);
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if (ret < 0)
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return ret;
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ff_huffyuvdsp_init(&s->hdsp, avctx->pix_fmt);
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ff_llviddsp_init(&s->llviddsp);
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memset(s->vlc, 0, 4 * sizeof(VLC));
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s->interlaced = avctx->height > 288;
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s->bgr32 = 1;
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if (avctx->extradata_size) {
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if ((avctx->bits_per_coded_sample & 7) &&
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avctx->bits_per_coded_sample != 12)
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s->version = 1; // do such files exist at all?
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else if (avctx->extradata_size > 3 && avctx->extradata[3] == 0)
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s->version = 2;
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else
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s->version = 3;
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} else
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s->version = 0;
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s->bps = 8;
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s->n = 1<<s->bps;
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s->vlc_n = FFMIN(s->n, MAX_VLC_N);
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s->chroma = 1;
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if (s->version >= 2) {
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int method, interlace;
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|
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if (avctx->extradata_size < 4)
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return AVERROR_INVALIDDATA;
|
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|
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method = avctx->extradata[0];
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s->decorrelate = method & 64 ? 1 : 0;
|
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s->predictor = method & 63;
|
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if (s->version == 2) {
|
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s->bitstream_bpp = avctx->extradata[1];
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if (s->bitstream_bpp == 0)
|
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s->bitstream_bpp = avctx->bits_per_coded_sample & ~7;
|
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} else {
|
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s->bps = (avctx->extradata[1] >> 4) + 1;
|
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s->n = 1<<s->bps;
|
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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;
|
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s->yuv = !!(avctx->extradata[2] & 1);
|
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s->chroma= !!(avctx->extradata[2] & 3);
|
|
s->alpha = !!(avctx->extradata[2] & 4);
|
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}
|
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interlace = (avctx->extradata[2] & 0x30) >> 4;
|
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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,
|
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avctx->extradata_size - 4)) < 0)
|
|
goto error;
|
|
} else {
|
|
switch (avctx->bits_per_coded_sample & 7) {
|
|
case 1:
|
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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;
|
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break;
|
|
case 16:
|
|
if (s->yuy2)
|
|
avctx->pix_fmt = AV_PIX_FMT_YUYV422;
|
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else
|
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avctx->pix_fmt = AV_PIX_FMT_YUV422P;
|
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s->yuv = 1;
|
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break;
|
|
case 24:
|
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if (s->bgr32)
|
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avctx->pix_fmt = AV_PIX_FMT_0RGB32;
|
|
else
|
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avctx->pix_fmt = AV_PIX_FMT_BGR24;
|
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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 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;
|
|
}
|
|
|
|
/** 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->llviddsp.add_left_pred(dst, src, w, acc);
|
|
} else {
|
|
return s->llviddsp.add_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->llviddsp.add_bytes(dst, src, w);
|
|
} else {
|
|
s->hdsp.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->llviddsp.add_median_pred(dst, src, diff, w, left, left_top);
|
|
} else {
|
|
s->hdsp.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_slice(AVCodecContext *avctx, AVFrame *p, int height,
|
|
int buf_size, int y_offset, int table_size)
|
|
{
|
|
HYuvContext *s = avctx->priv_data;
|
|
int fake_ystride, fake_ustride, fake_vstride;
|
|
const int width = s->width;
|
|
const int width2 = s->width >> 1;
|
|
int ret;
|
|
|
|
if ((ret = init_get_bits8(&s->gb, s->bitstream_buffer + table_size, buf_size - table_size)) < 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];
|
|
|
|
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;
|
|
if (y >= h)
|
|
break;
|
|
|
|
/* 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++;
|
|
if (y >= h)
|
|
break;
|
|
}
|
|
|
|
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 + y_offset * p->linesize[2]] = get_bits(&s->gb, 8);
|
|
lefty =
|
|
p->data[0][1 + y_offset * p->linesize[0]] = get_bits(&s->gb, 8);
|
|
leftu =
|
|
p->data[1][0 + y_offset * p->linesize[1]] = get_bits(&s->gb, 8);
|
|
p->data[0][0 + y_offset * p->linesize[0]] = get_bits(&s->gb, 8);
|
|
|
|
switch (s->predictor) {
|
|
case LEFT:
|
|
case PLANE:
|
|
decode_422_bitstream(s, width - 2);
|
|
lefty = s->llviddsp.add_left_pred(p->data[0] + p->linesize[0] * y_offset + 2, s->temp[0],
|
|
width - 2, lefty);
|
|
if (!(s->flags & AV_CODEC_FLAG_GRAY)) {
|
|
leftu = s->llviddsp.add_left_pred(p->data[1] + p->linesize[1] * y_offset + 1, s->temp[1], width2 - 1, leftu);
|
|
leftv = s->llviddsp.add_left_pred(p->data[2] + p->linesize[2] * y_offset + 1, s->temp[2], width2 - 1, leftv);
|
|
}
|
|
|
|
for (cy = y = 1; y < 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 + y_offset);
|
|
|
|
lefty = s->llviddsp.add_left_pred(ydst, s->temp[0],
|
|
width, lefty);
|
|
if (s->predictor == PLANE) {
|
|
if (y > s->interlaced)
|
|
s->llviddsp.add_bytes(ydst, ydst - fake_ystride, width);
|
|
}
|
|
y++;
|
|
if (y >= height)
|
|
break;
|
|
}
|
|
|
|
draw_slice(s, p, y);
|
|
|
|
ydst = p->data[0] + p->linesize[0] * (y + y_offset);
|
|
udst = p->data[1] + p->linesize[1] * (cy + y_offset);
|
|
vdst = p->data[2] + p->linesize[2] * (cy + y_offset);
|
|
|
|
decode_422_bitstream(s, width);
|
|
lefty = s->llviddsp.add_left_pred(ydst, s->temp[0],
|
|
width, lefty);
|
|
if (!(s->flags & AV_CODEC_FLAG_GRAY)) {
|
|
leftu = s->llviddsp.add_left_pred(udst, s->temp[1], width2, leftu);
|
|
leftv = s->llviddsp.add_left_pred(vdst, s->temp[2], width2, leftv);
|
|
}
|
|
if (s->predictor == PLANE) {
|
|
if (cy > s->interlaced) {
|
|
s->llviddsp.add_bytes(ydst, ydst - fake_ystride, width);
|
|
if (!(s->flags & AV_CODEC_FLAG_GRAY)) {
|
|
s->llviddsp.add_bytes(udst, udst - fake_ustride, width2);
|
|
s->llviddsp.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->llviddsp.add_left_pred(p->data[0] + 2, s->temp[0],
|
|
width - 2, lefty);
|
|
if (!(s->flags & AV_CODEC_FLAG_GRAY)) {
|
|
leftu = s->llviddsp.add_left_pred(p->data[1] + 1, s->temp[1], width2 - 1, leftu);
|
|
leftv = s->llviddsp.add_left_pred(p->data[2] + 1, s->temp[2], width2 - 1, leftv);
|
|
}
|
|
|
|
cy = y = 1;
|
|
if (y >= height)
|
|
break;
|
|
|
|
/* second line is left predicted for interlaced case */
|
|
if (s->interlaced) {
|
|
decode_422_bitstream(s, width);
|
|
lefty = s->llviddsp.add_left_pred(p->data[0] + p->linesize[0],
|
|
s->temp[0], width, lefty);
|
|
if (!(s->flags & AV_CODEC_FLAG_GRAY)) {
|
|
leftu = s->llviddsp.add_left_pred(p->data[1] + p->linesize[2], s->temp[1], width2, leftu);
|
|
leftv = s->llviddsp.add_left_pred(p->data[2] + p->linesize[1], s->temp[2], width2, leftv);
|
|
}
|
|
y++;
|
|
cy++;
|
|
if (y >= height)
|
|
break;
|
|
}
|
|
|
|
/* next 4 pixels are left predicted too */
|
|
decode_422_bitstream(s, 4);
|
|
lefty = s->llviddsp.add_left_pred(p->data[0] + fake_ystride,
|
|
s->temp[0], 4, lefty);
|
|
if (!(s->flags & AV_CODEC_FLAG_GRAY)) {
|
|
leftu = s->llviddsp.add_left_pred(p->data[1] + fake_ustride, s->temp[1], 2, leftu);
|
|
leftv = s->llviddsp.add_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->llviddsp.add_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->llviddsp.add_median_pred(p->data[1] + fake_ustride + 2, p->data[1] + 2, s->temp[1], width2 - 2, &leftu, &lefttopu);
|
|
s->llviddsp.add_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->llviddsp.add_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->llviddsp.add_median_pred(ydst, ydst - fake_ystride,
|
|
s->temp[0], width,
|
|
&lefty, &lefttopy);
|
|
if (!(s->flags & AV_CODEC_FLAG_GRAY)) {
|
|
s->llviddsp.add_median_pred(udst, udst - fake_ustride, s->temp[1], width2, &leftu, &lefttopu);
|
|
s->llviddsp.add_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 = (y_offset + 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 = 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 + y_offset),
|
|
s->temp[0], width, left);
|
|
if (s->predictor == PLANE) {
|
|
if (s->bitstream_bpp != 32)
|
|
left[A] = 0;
|
|
if (y < height - 1 - s->interlaced) {
|
|
s->llviddsp.add_bytes(p->data[0] + p->linesize[0] * (y + y_offset),
|
|
p->data[0] + p->linesize[0] * (y + y_offset) +
|
|
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;
|
|
}
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
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 height = s->height;
|
|
ThreadFrame frame = { .f = data };
|
|
AVFrame *const p = data;
|
|
int slice, table_size = 0, ret, nb_slices;
|
|
unsigned slices_info_offset;
|
|
int slice_height;
|
|
|
|
if (buf_size < (width * height + 7)/8)
|
|
return AVERROR_INVALIDDATA;
|
|
|
|
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;
|
|
|
|
s->last_slice_end = 0;
|
|
|
|
if (avctx->codec_id == AV_CODEC_ID_HYMT &&
|
|
(buf_size > 32 && AV_RL32(avpkt->data + buf_size - 16) == 0)) {
|
|
slices_info_offset = AV_RL32(avpkt->data + buf_size - 4);
|
|
slice_height = AV_RL32(avpkt->data + buf_size - 8);
|
|
nb_slices = AV_RL32(avpkt->data + buf_size - 12);
|
|
if (nb_slices * 8LL + slices_info_offset > buf_size - 16 ||
|
|
s->chroma_v_shift ||
|
|
slice_height <= 0 || nb_slices * (uint64_t)slice_height > height)
|
|
return AVERROR_INVALIDDATA;
|
|
} else {
|
|
slice_height = height;
|
|
nb_slices = 1;
|
|
}
|
|
|
|
for (slice = 0; slice < nb_slices; slice++) {
|
|
int y_offset, slice_offset, slice_size;
|
|
|
|
if (nb_slices > 1) {
|
|
slice_offset = AV_RL32(avpkt->data + slices_info_offset + slice * 8);
|
|
slice_size = AV_RL32(avpkt->data + slices_info_offset + slice * 8 + 4);
|
|
|
|
if (slice_offset < 0 || slice_size <= 0 || (slice_offset&3) ||
|
|
slice_offset + (int64_t)slice_size > buf_size)
|
|
return AVERROR_INVALIDDATA;
|
|
|
|
y_offset = height - (slice + 1) * slice_height;
|
|
s->bdsp.bswap_buf((uint32_t *)s->bitstream_buffer,
|
|
(const uint32_t *)(buf + slice_offset), slice_size / 4);
|
|
} else {
|
|
y_offset = 0;
|
|
slice_offset = 0;
|
|
slice_size = buf_size;
|
|
}
|
|
|
|
ret = decode_slice(avctx, p, slice_height, slice_size, y_offset, table_size);
|
|
emms_c();
|
|
if (ret < 0)
|
|
return ret;
|
|
}
|
|
|
|
*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,
|
|
};
|
|
|
|
#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,
|
|
};
|
|
#endif /* CONFIG_FFVHUFF_DECODER */
|
|
|
|
#if CONFIG_HYMT_DECODER
|
|
AVCodec ff_hymt_decoder = {
|
|
.name = "hymt",
|
|
.long_name = NULL_IF_CONFIG_SMALL("HuffYUV MT"),
|
|
.type = AVMEDIA_TYPE_VIDEO,
|
|
.id = AV_CODEC_ID_HYMT,
|
|
.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,
|
|
};
|
|
#endif /* CONFIG_HYMT_DECODER */
|