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huffyuv.h
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1 /*
2  * Copyright (c) 2002-2014 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 FFmpeg.
8  *
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.
13  *
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.
18  *
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
22  */
23 
24 /**
25  * @file
26  * huffyuv codec for libavcodec.
27  */
28 
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 #include "lossless_videodsp.h"
41 
42 #define VLC_BITS 12
43 
44 #define MAX_BITS 16
45 #define MAX_N (1<<MAX_BITS)
46 #define MAX_VLC_N 16384
47 
48 typedef enum Predictor {
49  LEFT = 0,
52 } Predictor;
53 
54 typedef struct HYuvContext {
55  AVClass *class;
63  int version;
64  int yuy2; //use yuy2 instead of 422P
65  int bgr32; //use bgr32 instead of bgr24
66  int bps;
67  int n; // 1<<bps
68  int vlc_n; // number of vlc codes (FFMIN(1<<bps, MAX_VLC_N))
69  int alpha;
70  int chroma;
71  int yuv;
74  int width, height;
75  int flags;
76  int context;
80  uint16_t *temp16[3]; ///< identical to temp but 16bit type
81  uint64_t stats[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
87  unsigned int bitstream_buffer_size;
92  int non_determ; // non-deterministic, multi-threaded encoder allowed
93 } HYuvContext;
94 
98 int ff_huffyuv_generate_bits_table(uint32_t *dst, const uint8_t *len_table, int n);
99 
100 #endif /* AVCODEC_HUFFYUV_H */
Predictor
Definition: huffyuv.h:48
const char * s
Definition: avisynth_c.h:768
int yuy2
Definition: huffyuv.h:64
int bitstream_bpp
Definition: huffyuv.h:62
int ff_huffyuv_generate_bits_table(uint32_t *dst, const uint8_t *len_table, int n)
Definition: huffyuv.c:39
#define MAX_VLC_N
Definition: huffyuv.h:46
int context
Definition: huffyuv.h:76
unsigned int bitstream_buffer_size
Definition: huffyuv.h:87
int height
Definition: huffyuv.h:74
uint32_t pix_bgr_map[1<< VLC_BITS]
Definition: huffyuv.h:84
uint8_t
int bps
Definition: huffyuv.h:66
bitstream reader API header.
int vlc_n
Definition: huffyuv.h:68
int chroma_h_shift
Definition: huffyuv.h:72
uint16_t * temp16[3]
identical to temp but 16bit type
Definition: huffyuv.h:80
uint8_t len[4][MAX_VLC_N]
Definition: huffyuv.h:82
int ff_huffyuv_alloc_temp(HYuvContext *s)
Definition: huffyuv.c:58
int chroma_v_shift
Definition: huffyuv.h:73
Definition: huffyuv.h:50
uint8_t * bitstream_buffer
Definition: huffyuv.h:86
int flags
Definition: huffyuv.h:75
void ff_huffyuv_common_init(AVCodecContext *s)
Definition: huffyuv.c:71
int bgr32
Definition: huffyuv.h:65
int chroma
Definition: huffyuv.h:70
VLC vlc[8]
Definition: huffyuv.h:85
Definition: vlc.h:26
#define VLC_BITS
Definition: huffyuv.h:42
int decorrelate
Definition: huffyuv.h:61
int width
Definition: huffyuv.h:74
int last_slice_end
Definition: huffyuv.h:78
Definition: huffyuv.h:49
int n
Definition: avisynth_c.h:684
void ff_huffyuv_common_end(HYuvContext *s)
Definition: huffyuv.c:87
uint8_t * temp[3]
Definition: huffyuv.h:79
int alpha
Definition: huffyuv.h:69
int picture_number
Definition: huffyuv.h:77
Libavcodec external API header.
int yuv
Definition: huffyuv.h:71
LLVidDSPContext llviddsp
Definition: huffyuv.h:91
HuffYUVDSPContext hdsp
Definition: huffyuv.h:89
main external API structure.
Definition: avcodec.h:1659
int interlaced
Definition: huffyuv.h:60
Describe the class of an AVClass context structure.
Definition: log.h:67
int non_determ
Definition: huffyuv.h:92
HuffYUVEncDSPContext hencdsp
Definition: huffyuv.h:90
int version
Definition: huffyuv.h:63
Predictor predictor
Definition: huffyuv.h:57
AVCodecContext * avctx
Definition: huffyuv.h:56
GetBitContext gb
Definition: huffyuv.h:58
PutBitContext pb
Definition: huffyuv.h:59
Definition: huffyuv.h:51
uint32_t bits[4][MAX_VLC_N]
Definition: huffyuv.h:83
uint64_t stats[4][MAX_VLC_N]
Definition: huffyuv.h:81
BswapDSPContext bdsp
Definition: huffyuv.h:88
bitstream writer API