mirror of
https://github.com/mpv-player/mpv
synced 2024-12-11 09:25:56 +00:00
126 lines
2.9 KiB
C
126 lines
2.9 KiB
C
/*
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* mpg123 defines
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* used source: musicout.h from mpegaudio package
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*/
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#include "../config.h"
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# define M_PI 3.14159265358979323846
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# define M_SQRT2 1.41421356237309504880
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# define REAL_IS_FLOAT
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# define NEW_DCT9
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#undef MPG123_REMOTE /* Get rid of this stuff for Win32 */
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/*
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# define real float
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# define real long double
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# define real double
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#include "audio.h"
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// #define AUDIOBUFSIZE 4096
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*/
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#define FALSE 0
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#define TRUE 1
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#define MAX_NAME_SIZE 81
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#define SBLIMIT 32
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#define SCALE_BLOCK 12
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#define SSLIMIT 18
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#define MPG_MD_STEREO 0
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#define MPG_MD_JOINT_STEREO 1
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#define MPG_MD_DUAL_CHANNEL 2
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#define MPG_MD_MONO 3
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/* #define MAXOUTBURST 32768 */
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/* Pre Shift fo 16 to 8 bit converter table */
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#define AUSHIFT (3)
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struct al_table
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{
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short bits;
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short d;
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};
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struct frame {
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struct al_table *alloc;
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int (*synth)(real *,int,unsigned char *,int *);
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int (*synth_mono)(real *,unsigned char *,int *);
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int stereo;
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int jsbound;
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int single;
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int II_sblimit;
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int down_sample_sblimit;
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int lsf;
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int mpeg25;
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int down_sample;
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int header_change;
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int lay;
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int error_protection;
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int bitrate_index;
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long sampling_frequency;
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int padding;
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int extension;
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int mode;
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int mode_ext;
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int copyright;
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int original;
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int emphasis;
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long framesize; /* computed framesize */
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};
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struct gr_info_s {
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int scfsi;
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unsigned part2_3_length;
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unsigned big_values;
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unsigned scalefac_compress;
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unsigned block_type;
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unsigned mixed_block_flag;
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unsigned table_select[3];
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unsigned subblock_gain[3];
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unsigned maxband[3];
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unsigned maxbandl;
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unsigned maxb;
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unsigned region1start;
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unsigned region2start;
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unsigned preflag;
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unsigned scalefac_scale;
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unsigned count1table_select;
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int full_gain[3];
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int pow2gain;
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};
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struct III_sideinfo
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{
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unsigned main_data_begin;
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unsigned private_bits;
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struct {
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struct gr_info_s gr[2];
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} ch[2];
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};
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static long freqs[9];
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#ifdef HAVE_3DNOW
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real decwin[2*(512+32)];
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#else
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real decwin[512+32];
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#endif
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real *pnts[];
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static int do_layer2(struct frame *fr,int single);
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static int do_layer3(struct frame *fr,int single);
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static int synth_1to1(real *bandPtr,int channel,unsigned char *out,int *pnt);
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extern int synth_1to1_pent( real *,int,unsigned char * );
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extern void dct64(real *a,real *b,real *c);
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#ifdef HAVE_3DNOW
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extern void dct64_3dnow( real *,real *, real * );
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extern void dct36_3dnow(real *,real *,real *,real *,real *);
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extern int synth_1to1_3dnow( real *,int,unsigned char * );
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#endif
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