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
37 #include "huffyuvdsp.h"
38 #include "huffyuvencdsp.h"
40 #include "lossless_videodsp.h"
45 #define MAX_N (1<<MAX_BITS)
46 #define MAX_VLC_N 16384
48 typedef enum Predictor
{
54 typedef struct HYuvContext
{
56 AVCodecContext
*avctx
;
64 int yuy2
; //use yuy2 instead of 422P
65 int bgr32
; //use bgr32 instead of bgr24
68 int vlc_n
; // number of vlc codes (FFMIN(1<<bps, MAX_VLC_N))
80 uint16_t *temp16
[3]; ///< identical to temp but 16bit type
81 uint64_t stats
[4][MAX_VLC_N
];
82 uint8_t len
[4][MAX_VLC_N
];
83 uint32_t bits
[4][MAX_VLC_N
];
84 uint32_t pix_bgr_map
[1<<VLC_BITS
];
85 VLC vlc
[8]; //Y,U,V,A,YY,YU,YV,AA
86 uint8_t *bitstream_buffer
;
87 unsigned int bitstream_buffer_size
;
89 HuffYUVDSPContext hdsp
;
90 HuffYUVEncDSPContext hencdsp
;
91 LLVidDSPContext llviddsp
;
92 int non_determ
; // non-deterministic, multi-threaded encoder allowed
95 void ff_huffyuv_common_init(AVCodecContext
*s
);
96 void ff_huffyuv_common_end(HYuvContext
*s
);
97 int ff_huffyuv_alloc_temp(HYuvContext
*s
);
98 int ff_huffyuv_generate_bits_table(uint32_t *dst
, const uint8_t *len_table
, int n
);
100 #endif /* AVCODEC_HUFFYUV_H */