2 * Copyright (c) 2002-2003 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)
57 typedef enum Predictor {
63 typedef struct HYuvContext {
64 AVCodecContext *avctx;
72 int yuy2; //use yuy2 instead of 422P
73 int bgr32; //use bgr32 instead of bgr24
87 uint16_t *temp16[3]; ///< identical to temp but 16bit type
88 uint64_t stats[4][MAX_N];
89 uint8_t len[4][MAX_N];
90 uint32_t bits[4][MAX_N];
91 uint32_t pix_bgr_map[1<<VLC_BITS];
92 VLC vlc[8]; //Y,U,V,A,YY,YU,YV,AA
93 uint8_t *bitstream_buffer;
94 unsigned int bitstream_buffer_size;
96 LLVidDSPContext llviddsp;
99 void ff_huffyuv_common_init(AVCodecContext *s);
100 void ff_huffyuv_common_end(HYuvContext *s);
101 int ff_huffyuv_alloc_temp(HYuvContext *s);
102 int ff_huffyuv_generate_bits_table(uint32_t *dst, const uint8_t *len_table, int n);
104 #endif /* AVCODEC_HUFFYUV_H */