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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 #include "lossless_videoencdsp.h"
42 
43 #define VLC_BITS 12
44 
45 #define MAX_BITS 16
46 #define MAX_N (1<<MAX_BITS)
47 #define MAX_VLC_N 16384
48 
49 typedef enum Predictor {
50  LEFT = 0,
53 } Predictor;
54 
55 typedef struct HYuvContext {
56  AVClass *class;
64  int version;
65  int yuy2; //use yuy2 instead of 422P
66  int bgr32; //use bgr32 instead of bgr24
67  int bps;
68  int n; // 1<<bps
69  int vlc_n; // number of vlc codes (FFMIN(1<<bps, MAX_VLC_N))
70  int alpha;
71  int chroma;
72  int yuv;
75  int width, height;
76  int flags;
77  int context;
81  uint16_t *temp16[3]; ///< identical to temp but 16bit type
82  uint64_t stats[4][MAX_VLC_N];
84  uint32_t bits[4][MAX_VLC_N];
85  uint32_t pix_bgr_map[1<<VLC_BITS];
86  VLC vlc[8]; //Y,U,V,A,YY,YU,YV,AA
88  unsigned int bitstream_buffer_size;
94  int non_determ; // non-deterministic, multi-threaded encoder allowed
95 } HYuvContext;
96 
100 int ff_huffyuv_generate_bits_table(uint32_t *dst, const uint8_t *len_table, int n);
101 
102 #endif /* AVCODEC_HUFFYUV_H */
Predictor
Definition: huffyuv.h:49
const char * s
Definition: avisynth_c.h:768
int yuy2
Definition: huffyuv.h:65
int bitstream_bpp
Definition: huffyuv.h:63
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:47
int context
Definition: huffyuv.h:77
unsigned int bitstream_buffer_size
Definition: huffyuv.h:88
LLVidEncDSPContext llvidencdsp
Definition: huffyuv.h:93
int height
Definition: huffyuv.h:75
uint32_t pix_bgr_map[1<< VLC_BITS]
Definition: huffyuv.h:85
uint8_t
int bps
Definition: huffyuv.h:67
bitstream reader API header.
int vlc_n
Definition: huffyuv.h:69
int chroma_h_shift
Definition: huffyuv.h:73
uint16_t * temp16[3]
identical to temp but 16bit type
Definition: huffyuv.h:81
uint8_t len[4][MAX_VLC_N]
Definition: huffyuv.h:83
int ff_huffyuv_alloc_temp(HYuvContext *s)
Definition: huffyuv.c:58
int chroma_v_shift
Definition: huffyuv.h:74
Definition: huffyuv.h:51
uint8_t * bitstream_buffer
Definition: huffyuv.h:87
int flags
Definition: huffyuv.h:76
void ff_huffyuv_common_init(AVCodecContext *s)
Definition: huffyuv.c:71
int bgr32
Definition: huffyuv.h:66
int chroma
Definition: huffyuv.h:71
VLC vlc[8]
Definition: huffyuv.h:86
Definition: vlc.h:26
#define VLC_BITS
Definition: huffyuv.h:43
int decorrelate
Definition: huffyuv.h:62
int width
Definition: huffyuv.h:75
int last_slice_end
Definition: huffyuv.h:79
Definition: huffyuv.h:50
int n
Definition: avisynth_c.h:684
void ff_huffyuv_common_end(HYuvContext *s)
Definition: huffyuv.c:86
uint8_t * temp[3]
Definition: huffyuv.h:80
int alpha
Definition: huffyuv.h:70
int picture_number
Definition: huffyuv.h:78
Libavcodec external API header.
int yuv
Definition: huffyuv.h:72
LLVidDSPContext llviddsp
Definition: huffyuv.h:92
HuffYUVDSPContext hdsp
Definition: huffyuv.h:90
main external API structure.
Definition: avcodec.h:1690
int interlaced
Definition: huffyuv.h:61
Describe the class of an AVClass context structure.
Definition: log.h:67
int non_determ
Definition: huffyuv.h:94
HuffYUVEncDSPContext hencdsp
Definition: huffyuv.h:91
int version
Definition: huffyuv.h:64
Predictor predictor
Definition: huffyuv.h:58
AVCodecContext * avctx
Definition: huffyuv.h:57
GetBitContext gb
Definition: huffyuv.h:59
PutBitContext pb
Definition: huffyuv.h:60
Definition: huffyuv.h:52
uint32_t bits[4][MAX_VLC_N]
Definition: huffyuv.h:84
uint64_t stats[4][MAX_VLC_N]
Definition: huffyuv.h:82
BswapDSPContext bdsp
Definition: huffyuv.h:89
bitstream writer API