Libav
huffyuv.h
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1 /*
2  * Copyright (c) 2002-2003 Michael Niedermayer <michaelni@gmx.at>
3  *
4  * see http://www.pcisys.net/~melanson/codecs/huffyuv.txt for a description of
5  * the algorithm used
6  *
7  * This file is part of Libav.
8  *
9  * Libav 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.
13  *
14  * Libav 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.
18  *
19  * You should have received a copy of the GNU Lesser General Public
20  * License along with Libav; if not, write to the Free Software
21  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
22  */
23 
29 #ifndef AVCODEC_HUFFYUV_H
30 #define AVCODEC_HUFFYUV_H
31 
32 #include <stdint.h>
33 
34 #include "avcodec.h"
35 #include "bswapdsp.h"
36 #include "get_bits.h"
37 #include "huffyuvdsp.h"
38 #include "huffyuvencdsp.h"
39 #include "put_bits.h"
40 
41 #define VLC_BITS 11
42 
43 #if HAVE_BIGENDIAN
44 #define B 3
45 #define G 2
46 #define R 1
47 #define A 0
48 #else
49 #define B 0
50 #define G 1
51 #define R 2
52 #define A 3
53 #endif
54 
55 typedef enum Predictor {
56  LEFT = 0,
59 } Predictor;
60 
61 typedef struct HYuvContext {
69  int version;
70  int yuy2; //use yuy2 instead of 422P
71  int bgr32; //use bgr32 instead of bgr24
72  int width, height;
73  int flags;
74  int context;
78  uint64_t stats[3][256];
79  uint8_t len[3][256];
80  uint32_t bits[3][256];
81  uint32_t pix_bgr_map[1<<VLC_BITS];
82  VLC vlc[6]; //Y,U,V,YY,YU,YV
84  unsigned int bitstream_buffer_size;
88 } HYuvContext;
89 
93 int ff_huffyuv_generate_bits_table(uint32_t *dst, const uint8_t *len_table);
94 
95 #endif /* AVCODEC_HUFFYUV_H */
Predictor
Definition: huffyuv.h:55
int yuy2
Definition: huffyuv.h:70
int bitstream_bpp
Definition: huffyuv.h:68
int context
Definition: huffyuv.h:74
unsigned int bitstream_buffer_size
Definition: huffyuv.h:84
int height
Definition: huffyuv.h:72
uint8_t len[3][256]
Definition: huffyuv.h:79
uint32_t pix_bgr_map[1<< VLC_BITS]
Definition: huffyuv.h:81
uint8_t
VLC vlc[6]
Definition: huffyuv.h:82
bitstream reader API header.
int ff_huffyuv_alloc_temp(HYuvContext *s)
Definition: huffyuv.c:58
uint64_t stats[3][256]
Definition: huffyuv.h:78
Definition: huffyuv.h:57
uint8_t * bitstream_buffer
Definition: huffyuv.h:83
int flags
Definition: huffyuv.h:73
void ff_huffyuv_common_init(AVCodecContext *s)
Definition: huffyuv.c:76
int bgr32
Definition: huffyuv.h:71
Definition: get_bits.h:64
uint32_t bits[3][256]
Definition: huffyuv.h:80
#define VLC_BITS
Definition: huffyuv.h:41
int decorrelate
Definition: huffyuv.h:67
int width
Definition: huffyuv.h:72
int last_slice_end
Definition: huffyuv.h:76
Definition: huffyuv.h:56
void ff_huffyuv_common_end(HYuvContext *s)
Definition: huffyuv.c:90
uint8_t * temp[3]
Definition: huffyuv.h:77
int picture_number
Definition: huffyuv.h:75
Libavcodec external API header.
HuffYUVDSPContext hdsp
Definition: huffyuv.h:86
main external API structure.
Definition: avcodec.h:1044
int interlaced
Definition: huffyuv.h:66
int ff_huffyuv_generate_bits_table(uint32_t *dst, const uint8_t *len_table)
Definition: huffyuv.c:39
HuffYUVEncDSPContext hencdsp
Definition: huffyuv.h:87
int version
Definition: huffyuv.h:69
Predictor predictor
Definition: huffyuv.h:63
AVCodecContext * avctx
Definition: huffyuv.h:62
GetBitContext gb
Definition: huffyuv.h:64
PutBitContext pb
Definition: huffyuv.h:65
Definition: huffyuv.h:58
BswapDSPContext bdsp
Definition: huffyuv.h:85
bitstream writer API