mpg123.h
上传用户：yisoukefu
上传日期：2020-08-09
资源大小：39506k
文件大小：2k
- #ifndef MPG123_H
- #define MPG123_H
- #define real float
- #ifndef M_PI
- #define M_PI 3.141592653589793238462
- #endif
- #ifndef M_SQRT2
- #define M_SQRT2 1.414213562373095048802
- #endif
- #define MAX_NAME_SIZE 81
- #define SBLIMIT 32
- #define SCALE_BLOCK 12
- #define SSLIMIT 18
- #define MPG_MD_STEREO 0
- #define MPG_MD_JOINT_STEREO 1
- #define MPG_MD_DUAL_CHANNEL 2
- #define MPG_MD_MONO 3
- /* #define MAXOUTBURST 32768 */
- /* Pre Shift fo 16 to 8 bit converter table */
- #define AUSHIFT (3)
- struct al_table
- {
- short bits;
- short d;
- };
- struct frame {
- struct al_table *alloc;
- int (*synth)(real *,int,unsigned char *,int *);
- int (*synth_mono)(real *,unsigned char *,int *);
- int stereo;
- int jsbound;
- int single;
- int II_sblimit;
- int down_sample_sblimit;
- int lsf;
- int mpeg25;
- int down_sample;
- int header_change;
- int lay;
- int error_protection;
- int bitrate_index;
- int sampling_frequency;
- int padding;
- int extension;
- int mode;
- int mode_ext;
- int copyright;
- int original;
- int emphasis;
- int framesize; /* computed framesize */
- };
- struct gr_info_s {
- int scfsi;
- unsigned part2_3_length;
- unsigned big_values;
- unsigned scalefac_compress;
- unsigned block_type;
- unsigned mixed_block_flag;
- unsigned table_select[3];
- unsigned subblock_gain[3];
- unsigned maxband[3];
- unsigned maxbandl;
- unsigned maxb;
- unsigned region1start;
- unsigned region2start;
- unsigned preflag;
- unsigned scalefac_scale;
- unsigned count1table_select;
- real *full_gain[3];
- real *pow2gain;
- };
- struct III_sideinfo
- {
- unsigned main_data_begin;
- unsigned private_bits;
- struct {
- struct gr_info_s gr[2];
- } ch[2];
- };
- typedef int (*synth_func_t)( real *,int,short * );
- typedef void (*dct36_func_t)(real *,real *,real *,real *,real *);
- #endif
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