aboutsummaryrefslogtreecommitdiffstats
path: root/libavcodec/mpegaudio.h
blob: 7aba13200b6a99d9e8ef5ab49633940a404305b6 (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
/**
 * @file mpegaudio.h
 * mpeg audio declarations for both encoder and decoder.
 */

/* max frame size, in samples */
#define MPA_FRAME_SIZE 1152 

/* max compressed frame size */
#define MPA_MAX_CODED_FRAME_SIZE 1792

#define MPA_MAX_CHANNELS 2

#define SBLIMIT 32 /* number of subbands */

#define MPA_STEREO  0
#define MPA_JSTEREO 1
#define MPA_DUAL    2
#define MPA_MONO    3

int l2_select_table(int bitrate, int nb_channels, int freq, int lsf);

extern const uint16_t mpa_bitrate_tab[2][3][15];
extern const uint16_t mpa_freq_tab[3];
extern const unsigned char *alloc_tables[5];
extern const double enwindow[512];
extern const int sblimit_table[5];
extern const int quant_steps[17];
extern const int quant_bits[17];
extern const int32_t mpa_enwindow[257];