1 /***************************************************************************
2 * Video decoder for the W996[87]CF driver for Linux. *
3 * *
4 * Copyright (C) 2003 2004 by Luca Risolia <luca.risolia@studio.unibo.it> *
5 * *
6 * This program is free software; you can redistribute it and/or modify *
7 * it under the terms of the GNU General Public License as published by *
8 * the Free Software Foundation; either version 2 of the License, or *
9 * (at your option) any later version. *
10 * *
11 * This program 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 *
14 * GNU General Public License for more details. *
15 * *
16 * You should have received a copy of the GNU General Public License *
17 * along with this program; if not, write to the Free Software *
18 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. *
19 ***************************************************************************/
20
21 #ifndef _W9968CF_DECODER_H_
22 #define _W9968CF_DECODER_H_
23
24 /* Comment/uncomment this for high/low quality of compressed video */
25 #define W9968CF_DEC_FAST_LOWQUALITY_VIDEO
26
27 #ifdef W9968CF_DEC_FAST_LOWQUALITY_VIDEO
28 static const unsigned char Y_QUANTABLE[64] = {
29 16, 11, 10, 16, 24, 40, 51, 61,
30 12, 12, 14, 19, 26, 58, 60, 55,
31 14, 13, 16, 24, 40, 57, 69, 56,
32 14, 17, 22, 29, 51, 87, 80, 62,
33 18, 22, 37, 56, 68, 109, 103, 77,
34 24, 35, 55, 64, 81, 104, 113, 92,
35 49, 64, 78, 87, 103, 121, 120, 101,
36 72, 92, 95, 98, 112, 100, 103, 99
37 };
38
39 static const unsigned char UV_QUANTABLE[64] = {
40 17, 18, 24, 47, 99, 99, 99, 99,
41 18, 21, 26, 66, 99, 99, 99, 99,
42 24, 26, 56, 99, 99, 99, 99, 99,
43 47, 66, 99, 99, 99, 99, 99, 99,
44 99, 99, 99, 99, 99, 99, 99, 99,
45 99, 99, 99, 99, 99, 99, 99, 99,
46 99, 99, 99, 99, 99, 99, 99, 99,
47 99, 99, 99, 99, 99, 99, 99, 99
48 };
49 #else
50 static const unsigned char Y_QUANTABLE[64] = {
51 8, 5, 5, 8, 12, 20, 25, 30,
52 6, 6, 7, 9, 13, 29, 30, 27,
53 7, 6, 8, 12, 20, 28, 34, 28,
54 7, 8, 11, 14, 25, 43, 40, 31,
55 9, 11, 18, 28, 34, 54, 51, 38,
56 12, 17, 27, 32, 40, 52, 56, 46,
57 24, 32, 39, 43, 51, 60, 60, 50,
58 36, 46, 47, 49, 56, 50, 51, 49
59 };
60
61 static const unsigned char UV_QUANTABLE[64] = {
62 8, 9, 12, 23, 49, 49, 49, 49,
63 9, 10, 13, 33, 49, 49, 49, 49,
64 12, 13, 28, 49, 49, 49, 49, 49,
65 23, 33, 49, 49, 49, 49, 49, 49,
66 49, 49, 49, 49, 49, 49, 49, 49,
67 49, 49, 49, 49, 49, 49, 49, 49,
68 49, 49, 49, 49, 49, 49, 49, 49,
69 49, 49, 49, 49, 49, 49, 49, 49
70 };
71 #endif
72
73 #define W9968CF_DEC_ERR_CORRUPTED_DATA -1
74 #define W9968CF_DEC_ERR_BUF_OVERFLOW -2
75 #define W9968CF_DEC_ERR_NO_SOI -3
76 #define W9968CF_DEC_ERR_NO_SOF0 -4
77 #define W9968CF_DEC_ERR_NO_SOS -5
78 #define W9968CF_DEC_ERR_NO_EOI -6
79
80 extern void w9968cf_init_decoder(void);
81 extern int w9968cf_check_headers(const unsigned char* Pin,
82 const unsigned long BUF_SIZE);
83 extern int w9968cf_decode(const char* Pin, const unsigned long BUF_SIZE,
84 const unsigned W, const unsigned H, char* Pout);
85
86 #endif /* _W9968CF_DECODER_H_ */
87
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