path: root/libavcodec/cfhd.h (plain)
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1	/*
2	* Copyright (c) 2015 Kieran Kunhya
3	*
4	* This file is part of FFmpeg.
5	*
6	* FFmpeg is free software; you can redistribute it and/or
7	* modify it under the terms of the GNU Lesser General Public
8	* License as published by the Free Software Foundation; either
9	* version 2.1 of the License, or (at your option) any later version.
10	*
11	* FFmpeg is distributed in the hope that it will be useful,
12	* but WITHOUT ANY WARRANTY; without even the implied warranty of
13	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14	* Lesser General Public License for more details.
15	*
16	* You should have received a copy of the GNU Lesser General Public
17	* License along with FFmpeg; if not, write to the Free Software
18	* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
19	*/
20
21	#ifndef AVCODEC_CFHD_H
22	#define AVCODEC_CFHD_H
23
24	#include <stdint.h>
25
26	#include "libavutil/avassert.h"
27
28	#include "avcodec.h"
29	#include "get_bits.h"
30
31	#define VLC_BITS 9
32	#define NB_VLC_TABLE_9 (71+3)
33	#define NB_VLC_TABLE_18 (263+1)
34
35	typedef struct CFHD_RL_VLC_ELEM {
36	int16_t level;
37	int8_t len;
38	uint16_t run;
39	} CFHD_RL_VLC_ELEM;
40
41	#define DWT_LEVELS 3
42
43	typedef struct SubBand {
44	int level;
45	int orientation;
46	int stride;
47	int a_width;
48	int width;
49	int a_height;
50	int height;
51	int pshift;
52	int quant;
53	uint8_t *ibuf;
54	} SubBand;
55
56	typedef struct Plane {
57	int width;
58	int height;
59	ptrdiff_t stride;
60
61	int16_t *idwt_buf;
62	int16_t *idwt_tmp;
63
64	/* TODO: merge this into SubBand structure */
65	int16_t *subband[10];
66	int16_t *l_h[8];
67
68	SubBand band[DWT_LEVELS][4];
69	} Plane;
70
71	typedef struct CFHDContext {
72	AVCodecContext *avctx;
73
74	CFHD_RL_VLC_ELEM table_9_rl_vlc[2088];
75	VLC vlc_9;
76
77	CFHD_RL_VLC_ELEM table_18_rl_vlc[4572];
78	VLC vlc_18;
79
80	GetBitContext gb;
81
82	int chroma_x_shift;
83	int chroma_y_shift;
84
85	int coded_width;
86	int coded_height;
87	int coded_format;
88
89	int a_width;
90	int a_height;
91	int a_format;
92
93	int bpc;
94	int channel_cnt;
95	int subband_cnt;
96	int channel_num;
97	uint8_t lowpass_precision;
98	uint16_t quantisation;
99	int wavelet_depth;
100	int pshift;
101
102	int codebook;
103	int subband_num;
104	int level;
105	int subband_num_actual;
106
107	uint8_t prescale_shift[3];
108	Plane plane[4];
109
110	} CFHDContext;
111
112	int ff_cfhd_init_vlcs(CFHDContext *s);
113
114	#endif /* AVCODEC_CFHD_H */
115