blob: 08d79e745415fdbef8a7c997e38c022ee3b8a5c7 (
plain) (
blame)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
|
/*
* Canopus HQ/HQA decoder
*
* This file is part of FFmpeg.
*
* FFmpeg is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* FFmpeg is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with FFmpeg; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
#ifndef AVCODEC_HQ_HQA_H
#define AVCODEC_HQ_HQA_H
#include <stdint.h>
#include "libavutil/mem_internal.h"
#include "avcodec.h"
#include "bytestream.h"
#include "hq_hqadsp.h"
#include "vlc.h"
#define NUM_HQ_AC_ENTRIES 746
#define NUM_HQ_PROFILES 22
#define NUM_HQ_QUANTS 16
typedef struct HQContext {
AVCodecContext *avctx;
HQDSPContext hqhqadsp;
GetByteContext gbc;
VLC hq_ac_vlc;
VLC hqa_cbp_vlc;
DECLARE_ALIGNED(16, int16_t, block)[12][64];
} HQContext;
typedef struct HQProfile {
const uint8_t *perm_tab;
int width, height;
int num_slices;
int tab_w, tab_h;
} HQProfile;
extern const int32_t * const ff_hq_quants[16][2][4];
extern const HQProfile ff_hq_profile[NUM_HQ_PROFILES];
extern const uint8_t ff_hq_ac_skips[NUM_HQ_AC_ENTRIES];
extern const int16_t ff_hq_ac_syms [NUM_HQ_AC_ENTRIES];
int ff_hq_init_vlcs(HQContext *c);
#endif /* AVCODEC_HQ_HQA_H */
|
