FFmpeg
libavcodec
hqx.h
Go to the documentation of this file.
1
/*
2
* Canopus HQX decoder
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_HQX_H
22
#define AVCODEC_HQX_H
23
24
#include <stdint.h>
25
26
#include "
libavutil/frame.h
"
27
#include "
libavutil/mem_internal.h
"
28
29
#include "
get_bits.h
"
30
#include "
hqxdsp.h
"
31
32
enum
HQXACMode
{
33
HQX_AC_Q0
= 0,
34
HQX_AC_Q8
,
35
HQX_AC_Q16
,
36
HQX_AC_Q32
,
37
HQX_AC_Q64
,
38
HQX_AC_Q128
,
39
NUM_HQX_AC
40
};
41
42
typedef
struct
HQXLUT
{
43
int16_t
lev
;
44
uint8_t
run
;
45
int8_t
bits
;
46
}
HQXLUT
;
47
48
typedef
struct
HQXAC
{
49
int
lut_bits
,
extra_bits
;
50
const
HQXLUT
*
lut
;
51
}
HQXAC
;
52
53
struct
HQXContext
;
54
55
typedef
int (*
mb_decode_func
)(
struct
HQXContext
*
ctx
,
56
int
slice_no,
int
x,
int
y);
57
58
typedef
struct
HQXSlice
{
59
GetBitContext
gb
;
60
DECLARE_ALIGNED
(16, int16_t,
block
)[16][64];
61
}
HQXSlice
;
62
63
typedef
struct
HQXContext
{
64
HQXDSPContext
hqxdsp
;
65
HQXSlice
slice
[16];
66
67
AVFrame
*
pic
;
68
mb_decode_func
decode_func
;
69
70
int
format
,
dcb
,
width
,
height
;
71
int
interlaced
;
72
73
const
uint8_t *
src
;
74
unsigned
int
data_size
;
75
uint32_t
slice_off
[17];
76
77
VLC
cbp_vlc
;
78
VLC
dc_vlc
[3];
79
}
HQXContext
;
80
81
#define HQX_CBP_VLC_BITS 5
82
#define HQX_DC_VLC_BITS 9
83
84
extern
const
HQXAC
ff_hqx_ac
[
NUM_HQX_AC
];
85
86
int
ff_hqx_init_vlcs
(
HQXContext
*
ctx
);
87
88
#endif
/* AVCODEC_HQX_H */
ff_hqx_init_vlcs
int ff_hqx_init_vlcs(HQXContext *ctx)
Definition:
hqxvlc.c:2151
HQXLUT::bits
int8_t bits
Definition:
hqx.h:45
HQX_AC_Q8
@ HQX_AC_Q8
Definition:
hqx.h:34
HQXContext::data_size
unsigned int data_size
Definition:
hqx.h:74
HQXContext::hqxdsp
HQXDSPContext hqxdsp
Definition:
hqx.h:64
mem_internal.h
HQXSlice::gb
GetBitContext gb
Definition:
hqx.h:59
HQXContext::width
int width
Definition:
hqx.h:70
HQXContext::pic
AVFrame * pic
Definition:
hqx.h:67
AVFrame
This structure describes decoded (raw) audio or video data.
Definition:
frame.h:389
HQXAC::lut
const HQXLUT * lut
Definition:
hqx.h:50
HQXContext::decode_func
mb_decode_func decode_func
Definition:
hqx.h:68
HQXLUT::lev
int16_t lev
Definition:
hqx.h:43
GetBitContext
Definition:
get_bits.h:108
HQXContext::dc_vlc
VLC dc_vlc[3]
Definition:
hqx.h:78
HQXAC::lut_bits
int lut_bits
Definition:
hqx.h:49
HQXContext::slice
HQXSlice slice[16]
Definition:
hqx.h:65
HQXDSPContext
Definition:
hqxdsp.h:32
ctx
AVFormatContext * ctx
Definition:
movenc.c:49
get_bits.h
HQXLUT
Definition:
hqx.h:42
mb_decode_func
int(* mb_decode_func)(struct HQXContext *ctx, int slice_no, int x, int y)
Definition:
hqx.h:55
HQX_AC_Q32
@ HQX_AC_Q32
Definition:
hqx.h:36
HQXAC::extra_bits
int extra_bits
Definition:
hqx.h:49
HQXACMode
HQXACMode
Definition:
hqx.h:32
ff_hqx_ac
const HQXAC ff_hqx_ac[NUM_HQX_AC]
Definition:
hqxvlc.c:2132
HQXContext::dcb
int dcb
Definition:
hqx.h:70
HQXLUT::run
uint8_t run
Definition:
hqx.h:44
HQXSlice
Definition:
hqx.h:58
DECLARE_ALIGNED
#define DECLARE_ALIGNED(n, t, v)
Definition:
mem_internal.h:102
frame.h
hqxdsp.h
HQX_AC_Q64
@ HQX_AC_Q64
Definition:
hqx.h:37
HQXContext
Definition:
hqx.h:63
HQXSlice::block
int16_t block[16][64]
Definition:
hqx.h:60
HQXContext::format
int format
Definition:
hqx.h:70
HQXContext::slice_off
uint32_t slice_off[17]
Definition:
hqx.h:75
HQX_AC_Q128
@ HQX_AC_Q128
Definition:
hqx.h:38
NUM_HQX_AC
@ NUM_HQX_AC
Definition:
hqx.h:39
HQXContext::interlaced
int interlaced
Definition:
hqx.h:71
HQX_AC_Q0
@ HQX_AC_Q0
Definition:
hqx.h:33
VLC
Definition:
vlc.h:36
HQXAC
Definition:
hqx.h:48
HQXContext::src
const uint8_t * src
Definition:
hqx.h:73
HQXContext::cbp_vlc
VLC cbp_vlc
Definition:
hqx.h:77
HQXContext::height
int height
Definition:
hqx.h:70
HQX_AC_Q16
@ HQX_AC_Q16
Definition:
hqx.h:35
Generated on Fri Dec 13 2024 19:21:39 for FFmpeg by
1.8.17