FFmpeg
asv.c
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1 /*
2  * Copyright (c) 2003 Michael Niedermayer
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 /**
22  * @file
23  * ASUS V1/V2 encoder/decoder common data
24  */
25 
26 #include <stdint.h>
27 
28 #include "asv.h"
29 #include "avcodec.h"
30 #include "bswapdsp.h"
31 
32 const uint8_t ff_asv_scantab[64] = {
33  0x00, 0x08, 0x01, 0x09, 0x10, 0x18, 0x11, 0x19,
34  0x02, 0x0A, 0x03, 0x0B, 0x12, 0x1A, 0x13, 0x1B,
35  0x04, 0x0C, 0x05, 0x0D, 0x20, 0x28, 0x21, 0x29,
36  0x06, 0x0E, 0x07, 0x0F, 0x14, 0x1C, 0x15, 0x1D,
37  0x22, 0x2A, 0x23, 0x2B, 0x30, 0x38, 0x31, 0x39,
38  0x16, 0x1E, 0x17, 0x1F, 0x24, 0x2C, 0x25, 0x2D,
39  0x32, 0x3A, 0x33, 0x3B, 0x26, 0x2E, 0x27, 0x2F,
40  0x34, 0x3C, 0x35, 0x3D, 0x36, 0x3E, 0x37, 0x3F,
41 };
42 
43 const uint8_t ff_asv_ccp_tab[17][2] = {
44  { 0x2, 2 }, { 0x7, 5 }, { 0xB, 5 }, { 0x3, 5 },
45  { 0xD, 5 }, { 0x5, 5 }, { 0x9, 5 }, { 0x1, 5 },
46  { 0xE, 5 }, { 0x6, 5 }, { 0xA, 5 }, { 0x2, 5 },
47  { 0xC, 5 }, { 0x4, 5 }, { 0x8, 5 }, { 0x3, 2 },
48  { 0xF, 5 }, // EOB
49 };
50 
51 const uint8_t ff_asv_level_tab[7][2] = {
52  { 3, 4 }, { 3, 3 }, { 3, 2 }, { 0, 3 }, { 2, 2 }, { 2, 3 }, { 2, 4 }
53 };
54 
55 const uint8_t ff_asv_dc_ccp_tab[8][2] = {
56  { 0x2, 2 }, { 0xB, 4 }, { 0xF, 4 }, { 0x3, 4 },
57  { 0x5, 3 }, { 0x7, 4 }, { 0x1, 3 }, { 0x0, 2 },
58 };
59 
60 const uint8_t ff_asv_ac_ccp_tab[16][2] = {
61  { 0x00, 2 }, { 0x37, 6 }, { 0x05, 4 }, { 0x17, 6 },
62  { 0x02, 3 }, { 0x27, 6 }, { 0x0F, 6 }, { 0x07, 6 },
63  { 0x06, 3 }, { 0x2F, 6 }, { 0x01, 4 }, { 0x1F, 5 },
64  { 0x09, 4 }, { 0x0D, 4 }, { 0x0B, 4 }, { 0x03, 4 },
65 };
66 
67 const uint16_t ff_asv2_level_tab[63][2] = {
68  { 0x3F0, 10 }, { 0x3D0, 10 }, { 0x3B0, 10 }, { 0x390, 10 }, { 0x370, 10 },
69  { 0x350, 10 }, { 0x330, 10 }, { 0x310, 10 }, { 0x2F0, 10 }, { 0x2D0, 10 },
70  { 0x2B0, 10 }, { 0x290, 10 }, { 0x270, 10 }, { 0x250, 10 }, { 0x230, 10 },
71  { 0x210, 10 },
72  { 0x0F8, 8 }, { 0x0E8, 8 }, { 0x0D8, 8 }, { 0x0C8, 8 }, { 0x0B8, 8 },
73  { 0x0A8, 8 }, { 0x098, 8 }, { 0x088, 8 },
74  { 0x03C, 6 }, { 0x034, 6 }, { 0x02C, 6 }, { 0x024, 6 },
75  { 0x00E, 4 }, { 0x00A, 4 },
76  { 0x003, 2 },
77  { 0x000, 5 },
78  { 0x001, 2 },
79  { 0x002, 4 }, { 0x006, 4 },
80  { 0x004, 6 }, { 0x00C, 6 }, { 0x014, 6 }, { 0x01C, 6 },
81  { 0x008, 8 }, { 0x018, 8 }, { 0x028, 8 }, { 0x038, 8 }, { 0x048, 8 },
82  { 0x058, 8 }, { 0x068, 8 }, { 0x078, 8 },
83  { 0x010, 10 }, { 0x030, 10 }, { 0x050, 10 }, { 0x070, 10 }, { 0x090, 10 },
84  { 0x0B0, 10 }, { 0x0D0, 10 }, { 0x0F0, 10 }, { 0x110, 10 }, { 0x130, 10 },
85  { 0x150, 10 }, { 0x170, 10 }, { 0x190, 10 }, { 0x1B0, 10 }, { 0x1D0, 10 },
86  { 0x1F0, 10 }
87 };
88 
90 {
91  ASV1Context *const a = avctx->priv_data;
92 
94 
95  a->mb_width = (avctx->width + 15) / 16;
96  a->mb_height = (avctx->height + 15) / 16;
97  a->mb_width2 = (avctx->width + 0) / 16;
98  a->mb_height2 = (avctx->height + 0) / 16;
99 
100  a->avctx = avctx;
101 }
const uint8_t ff_asv_ac_ccp_tab[16][2]
Definition: asv.c:60
AVCodecContext * avctx
Definition: asv.h:43
The reader does not expect b to be semantically here and if the code is changed by maybe adding a a division or other the signedness will almost certainly be mistaken To avoid this confusion a new type was SUINT is the C unsigned type but it holds a signed int to use the same example SUINT a
Definition: undefined.txt:36
uint8_t
#define av_cold
Definition: attributes.h:88
const uint8_t ff_asv_ccp_tab[17][2]
Definition: asv.c:43
const uint8_t ff_asv_dc_ccp_tab[8][2]
Definition: asv.c:55
int mb_height2
Definition: asv.h:56
BswapDSPContext bbdsp
Definition: asv.h:45
av_cold void ff_asv_common_init(AVCodecContext *avctx)
Definition: asv.c:89
ASUS V1/V2 encoder/decoder common data.
int width
picture width / height.
Definition: avcodec.h:704
int mb_width
Definition: asv.h:53
Libavcodec external API header.
main external API structure.
Definition: avcodec.h:531
const uint16_t ff_asv2_level_tab[63][2]
Definition: asv.c:67
int mb_width2
Definition: asv.h:55
av_cold void ff_bswapdsp_init(BswapDSPContext *c)
Definition: bswapdsp.c:49
void * priv_data
Definition: avcodec.h:558
const uint8_t ff_asv_scantab[64]
Definition: asv.c:32
const uint8_t ff_asv_level_tab[7][2]
Definition: asv.c:51
int mb_height
Definition: asv.h:54