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1 : | Isibaar | 3 | /************************************************************************** |
2 : | * | ||
3 : | * XVID MPEG-4 VIDEO CODEC | ||
4 : | * mpeg-4 quantization matrix stuff | ||
5 : | * | ||
6 : | * This program is an implementation of a part of one or more MPEG-4 | ||
7 : | * Video tools as specified in ISO/IEC 14496-2 standard. Those intending | ||
8 : | * to use this software module in hardware or software products are | ||
9 : | * advised that its use may infringe existing patents or copyrights, and | ||
10 : | * any such use would be at such party's own risk. The original | ||
11 : | * developer of this software module and his/her company, and subsequent | ||
12 : | * editors and their companies, will have no liability for use of this | ||
13 : | * software or modifications or derivatives thereof. | ||
14 : | * | ||
15 : | * This program is free software; you can redistribute it and/or modify | ||
16 : | * it under the terms of the GNU General Public License as published by | ||
17 : | * the Free Software Foundation; either version 2 of the License, or | ||
18 : | * (at your option) any later version. | ||
19 : | * | ||
20 : | * This program is distributed in the hope that it will be useful, | ||
21 : | * but WITHOUT ANY WARRANTY; without even the implied warranty of | ||
22 : | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | ||
23 : | * GNU General Public License for more details. | ||
24 : | * | ||
25 : | * You should have received a copy of the GNU General Public License | ||
26 : | * along with this program; if not, write to the Free Software | ||
27 : | * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. | ||
28 : | * | ||
29 : | *************************************************************************/ | ||
30 : | |||
31 : | /************************************************************************** | ||
32 : | * | ||
33 : | * History: | ||
34 : | * | ||
35 : | * 2.3.2002 inital version <suxen_drol@hotmail.com> | ||
36 : | * | ||
37 : | *************************************************************************/ | ||
38 : | |||
39 : | #include "common.h" | ||
40 : | |||
41 : | |||
42 : | static const int16_t default_intra_matrix[64] = { | ||
43 : | 8,17,18,19,21,23,25,27, | ||
44 : | 17,18,19,21,23,25,27,28, | ||
45 : | 20,21,22,23,24,26,28,30, | ||
46 : | 21,22,23,24,26,28,30,32, | ||
47 : | 22,23,24,26,28,30,32,35, | ||
48 : | 23,24,26,28,30,32,35,38, | ||
49 : | 25,26,28,30,32,35,38,41, | ||
50 : | 27,28,30,32,35,38,41,45 | ||
51 : | }; | ||
52 : | |||
53 : | static const int16_t default_inter_matrix[64] = { | ||
54 : | 16,17,18,19,20,21,22,23, | ||
55 : | 17,18,19,20,21,22,23,24, | ||
56 : | 18,19,20,21,22,23,24,25, | ||
57 : | 19,20,21,22,23,24,26,27, | ||
58 : | 20,21,22,23,25,26,27,28, | ||
59 : | 21,22,23,24,26,27,28,30, | ||
60 : | 22,23,24,26,27,28,30,31, | ||
61 : | 23,24,25,27,28,30,31,33 | ||
62 : | }; | ||
63 : | |||
64 : | |||
65 : | void quant4_intra_init(QMATRIX * qmatrix, int use_default) | ||
66 : | { | ||
67 : | if (use_default) | ||
68 : | { | ||
69 : | memcpy(qmatrix->intra, default_intra_matrix, 64 * sizeof (int16_t)); | ||
70 : | } | ||
71 : | |||
72 : | #ifdef ARCH_X86 | ||
73 : | // TODO: generate mmx tables | ||
74 : | #endif | ||
75 : | |||
76 : | } | ||
77 : | |||
78 : | |||
79 : | void quant4_inter_init(QMATRIX * qmatrix, int use_default) | ||
80 : | { | ||
81 : | if (use_default) | ||
82 : | { | ||
83 : | memcpy(qmatrix->inter, default_inter_matrix, 64 * sizeof (int16_t)); | ||
84 : | } | ||
85 : | |||
86 : | #ifdef ARCH_X86 | ||
87 : | // TODO: generate mmx tables | ||
88 : | #endif | ||
89 : | } |
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