lavf/qsvvpp: bypass vpp if not needed.
[libav.git] / libavcodec / gsmdec_data.h
1 /*
2 * gsm 06.10 decoder data
3 * Copyright (c) 2010 Reimar Döffinger <Reimar.Doeffinger@gmx.de>
4 *
5 * This file is part of Libav.
6 *
7 * Libav is free software; you can redistribute it and/or
8 * modify it under the terms of the GNU Lesser General Public
9 * License as published by the Free Software Foundation; either
10 * version 2.1 of the License, or (at your option) any later version.
11 *
12 * Libav is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15 * Lesser General Public License for more details.
16 *
17 * You should have received a copy of the GNU Lesser General Public
18 * License along with Libav; if not, write to the Free Software
19 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
20 */
21
22 #ifndef AVCODEC_GSMDEC_DATA_H
23 #define AVCODEC_GSMDEC_DATA_H
24
25 #include <stdint.h>
26 #include "avcodec.h"
27
28 typedef struct GSMContext {
29 // Contains first 120 elements from the previous frame
30 // (used by long_term_synth according to the "lag"),
31 // then in the following 160 elements the current
32 // frame is constructed.
33 int16_t ref_buf[280];
34 int v[9];
35 int lar[2][8];
36 int lar_idx;
37 int msr;
38 } GSMContext;
39
40 extern const uint16_t ff_gsm_long_term_gain_tab[4];
41 extern const uint8_t ff_gsm_requant_tab[4][8];
42 extern const int16_t ff_gsm_dequant_tab[64][8];
43
44 extern const int* const ff_gsm_apcm_bits[][4];
45
46 #endif /* AVCODEC_GSMDEC_DATA_H */