2 * Copyright (c) 2002-2014 Michael Niedermayer <michaelni@gmx.at>
4 * see http://www.pcisys.net/~melanson/codecs/huffyuv.txt for a description of
7 * This file is part of FFmpeg.
9 * FFmpeg is free software; you can redistribute it and/or
10 * modify it under the terms of the GNU Lesser General Public
11 * License as published by the Free Software Foundation; either
12 * version 2.1 of the License, or (at your option) any later version.
14 * FFmpeg is distributed in the hope that it will be useful,
15 * but WITHOUT ANY WARRANTY; without even the implied warranty of
16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
17 * Lesser General Public License for more details.
19 * You should have received a copy of the GNU Lesser General Public
20 * License along with FFmpeg; if not, write to the Free Software
21 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
26 * huffyuv codec for libavcodec.
29 #ifndef AVCODEC_HUFFYUV_H
30 #define AVCODEC_HUFFYUV_H
38 #include "lossless_videodsp.h"
43 #define MAX_N (1<<MAX_BITS)
44 #define MAX_VLC_N 16384
58 typedef enum Predictor {
64 typedef struct HYuvContext {
65 AVCodecContext *avctx;
73 int yuy2; //use yuy2 instead of 422P
74 int bgr32; //use bgr32 instead of bgr24
77 int vlc_n; // number of vlc codes (FFMIN(1<<bps, MAX_VLC_N))
89 uint16_t *temp16[3]; ///< identical to temp but 16bit type
90 uint64_t stats[4][MAX_VLC_N];
91 uint8_t len[4][MAX_VLC_N];
92 uint32_t bits[4][MAX_VLC_N];
93 uint32_t pix_bgr_map[1<<VLC_BITS];
94 VLC vlc[8]; //Y,U,V,A,YY,YU,YV,AA
95 uint8_t *bitstream_buffer;
96 unsigned int bitstream_buffer_size;
98 LLVidDSPContext llviddsp;
101 void ff_huffyuv_common_init(AVCodecContext *s);
102 void ff_huffyuv_common_end(HYuvContext *s);
103 int ff_huffyuv_alloc_temp(HYuvContext *s);
104 int ff_huffyuv_generate_bits_table(uint32_t *dst, const uint8_t *len_table, int n);
106 #endif /* AVCODEC_HUFFYUV_H */