mirror of
https://github.com/FFmpeg/FFmpeg.git
synced 2024-12-23 12:43:46 +02:00
32 lines
825 B
C
32 lines
825 B
C
/**
|
|
* @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);
|
|
int mpa_decode_header(AVCodecContext *avctx, uint32_t head);
|
|
|
|
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];
|