forked from KolibriOS/kolibrios
360 lines
10 KiB
C
360 lines
10 KiB
C
/*
|
|
mpg123: main code of the program (not of the decoder...)
|
|
|
|
copyright 1995-2006 by the mpg123 project - free software under the terms of the LGPL 2.1
|
|
see COPYING and AUTHORS files in distribution or http://mpg123.de
|
|
initially written by Michael Hipp
|
|
|
|
mpg123 defines
|
|
used source: musicout.h from mpegaudio package
|
|
*/
|
|
|
|
#ifdef __cplusplus
|
|
extern "C" {
|
|
#endif
|
|
|
|
#include <stdio.h>
|
|
#include <math.h>
|
|
#ifndef _AUDIO_H_
|
|
#define _AUDIO_H_
|
|
|
|
typedef unsigned char byte;
|
|
#define off_t long
|
|
|
|
//#define I486_OPT 1
|
|
|
|
#define SKIP_JUNK 1
|
|
# define M_PI 3.14159265358979323846
|
|
# define M_SQRT2 1.41421356237309504880
|
|
# define REAL_IS_FLOAT
|
|
# define NEW_DCT9
|
|
|
|
#ifdef REAL_IS_FLOAT
|
|
# define real float
|
|
# define REAL_SCANF "%f"
|
|
# define REAL_PRINTF "%f"
|
|
#else
|
|
# define real double
|
|
# define REAL_SCANF "%lf"
|
|
# define REAL_PRINTF "%f"
|
|
#endif
|
|
|
|
#ifndef DOUBLE_TO_REAL
|
|
# define DOUBLE_TO_REAL(x) (x)
|
|
#endif
|
|
#ifndef REAL_TO_SHORT
|
|
# define REAL_TO_SHORT(x) (x)
|
|
#endif
|
|
#ifndef REAL_PLUS_32767
|
|
# define REAL_PLUS_32767 32767.0
|
|
#endif
|
|
#ifndef REAL_MINUS_32768
|
|
# define REAL_MINUS_32768 -32768.0
|
|
#endif
|
|
#ifndef REAL_MUL
|
|
# define REAL_MUL(x, y) ((x) * (y))
|
|
#endif
|
|
|
|
#define INLINE
|
|
/* AUDIOBUFSIZE = n*64 with n=1,2,3 ... */
|
|
#define AUDIOBUFSIZE 16384
|
|
|
|
#define FALSE 0
|
|
#define TRUE 1
|
|
|
|
#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
|
|
|
|
/* I suspect that 32767 would be a better idea here, but Michael put this in... */
|
|
#define MAXOUTBURST 32768
|
|
|
|
/* Pre Shift fo 16 to 8 bit converter table */
|
|
#define AUSHIFT (3)
|
|
|
|
struct bitstream_info
|
|
{ int bitindex;
|
|
unsigned char *wordpointer;
|
|
};
|
|
extern struct bitstream_info bsi;
|
|
|
|
struct reader
|
|
{ char *hFile;
|
|
unsigned char *buffer;
|
|
unsigned char *stream;
|
|
int strpos;
|
|
int strremain;
|
|
int filelen;
|
|
int filepos;
|
|
|
|
int (*head_read)(struct reader *,unsigned long *newhead);
|
|
int (*read_frame_body)(struct reader *,unsigned char *,int size);
|
|
};
|
|
|
|
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; /* I _think_ 1 for mono and 2 for stereo */
|
|
int jsbound;
|
|
int single;
|
|
int II_sblimit;
|
|
int down_sample_sblimit;
|
|
int lsf; /* 0: MPEG 1.0; 1: MPEG 2.0/2.5 -- both used as bool and array index! */
|
|
int mpeg25;
|
|
int down_sample;
|
|
int header_change;
|
|
int lay;
|
|
int (*do_layer)(struct frame *fr,byte *pcm_out, int *pcm_size);
|
|
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 */
|
|
int vbr; /* 1 if variable bitrate was detected */
|
|
unsigned long num; /* the nth frame in some stream... */
|
|
};
|
|
|
|
#if 0
|
|
struct parameter {
|
|
int aggressive; /* renice to max. priority */
|
|
int shuffle; /* shuffle/random play */
|
|
int remote; /* remote operation */
|
|
int remote_err; /* remote operation to stderr */
|
|
int outmode; /* where to out the decoded sampels */
|
|
int quiet; /* shut up! */
|
|
int xterm_title; /* Change xterm title to song names? */
|
|
long usebuffer; /* second level buffer size */
|
|
int tryresync; /* resync stream after error */
|
|
int verbose; /* verbose level */
|
|
int force_mono;
|
|
int force_stereo;
|
|
int force_8bit;
|
|
long force_rate;
|
|
int down_sample;
|
|
int checkrange;
|
|
long doublespeed;
|
|
long halfspeed;
|
|
int force_reopen;
|
|
long realtime;
|
|
char filename[256];
|
|
long listentry; /* possibility to choose playback of one entry in playlist (0: off, > 0 : select, < 0; just show list*/
|
|
int rva; /* (which) rva to do: <0: nothing, 0: radio/mix/track 1: album/audiophile */
|
|
char* listname; /* name of playlist */
|
|
int long_id3;
|
|
};
|
|
#endif
|
|
|
|
#if 0
|
|
struct reader {
|
|
int (*init)(struct reader *);
|
|
void (*close)(struct reader *);
|
|
int (*head_read)(struct reader *,unsigned long *newhead);
|
|
int (*head_shift)(struct reader *,unsigned long *head);
|
|
long (*skip_bytes)(struct reader *,off_t len);
|
|
int (*read_frame_body)(struct reader *,unsigned char *,int size);
|
|
int (*back_bytes)(struct reader *,off_t bytes);
|
|
int (*back_frame)(struct reader *,struct frame *,long num);
|
|
off_t (*tell)(struct reader *);
|
|
void (*rewind)(struct reader *);
|
|
off_t filelen;
|
|
off_t filepos;
|
|
int filept;
|
|
int flags;
|
|
unsigned char id3buf[128];
|
|
};
|
|
#endif
|
|
|
|
#define READER_FD_OPENED 0x1
|
|
#define READER_ID3TAG 0x2
|
|
#define READER_SEEKABLE 0x4
|
|
|
|
//extern void audio_flush(int, struct audio_info_struct *);
|
|
|
|
//extern void print_header(struct frame *);
|
|
//extern void print_header_compact(struct frame *);
|
|
//extern void print_id3_tag(unsigned char *buf);
|
|
|
|
//extern int split_dir_file(const char *path, char **dname, char **fname);
|
|
|
|
extern unsigned int get1bit(void);
|
|
extern unsigned int getbits(int);
|
|
extern unsigned int getbits_fast(int);
|
|
//extern void backbits(int);
|
|
//extern int getbitoffset(void);
|
|
//extern int getbyte(void);
|
|
|
|
//extern void set_pointer(long);
|
|
|
|
//extern unsigned char *pcm_sample;
|
|
//extern int pcm_point;
|
|
//extern int audiobufsize;
|
|
|
|
//extern int OutputDescriptor;
|
|
|
|
#ifdef VARMODESUPPORT
|
|
extern int varmode;
|
|
extern int playlimit;
|
|
#endif
|
|
|
|
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];
|
|
};
|
|
|
|
extern int open_stream(char *,int fd);
|
|
extern void read_frame_init (struct frame* fr);
|
|
int read_frame(struct reader *rd, struct frame *fr);
|
|
|
|
|
|
/* why extern? */
|
|
void prepare_audioinfo(struct frame *fr, struct audio_info_struct *nai);
|
|
int play_frame(int init,struct frame *fr);
|
|
int do_layer1(struct frame *fr,byte *pcm_sample, int *pcm_point);
|
|
int do_layer2(struct frame *fr,byte *pcm_sample, int *pcm_point);
|
|
int do_layer3(struct frame *fr,byte *pcm_sample, int *pcm_point);
|
|
extern void do_equalizer(real *bandPtr,int channel);
|
|
|
|
#ifdef PENTIUM_OPT
|
|
extern int synth_1to1_pent (real *,int,unsigned char *);
|
|
#endif
|
|
extern int synth_1to1 (real *,int,unsigned char *,int *);
|
|
extern int synth_1to1_8bit (real *,int,unsigned char *,int *);
|
|
extern int synth_1to1_mono (real *,unsigned char *,int *);
|
|
extern int synth_1to1_mono2stereo (real *,unsigned char *,int *);
|
|
extern int synth_1to1_8bit_mono (real *,unsigned char *,int *);
|
|
extern int synth_1to1_8bit_mono2stereo (real *,unsigned char *,int *);
|
|
|
|
extern int synth_2to1 (real *,int,unsigned char *,int *);
|
|
extern int synth_2to1_8bit (real *,int,unsigned char *,int *);
|
|
extern int synth_2to1_mono (real *,unsigned char *,int *);
|
|
extern int synth_2to1_mono2stereo (real *,unsigned char *,int *);
|
|
extern int synth_2to1_8bit_mono (real *,unsigned char *,int *);
|
|
extern int synth_2to1_8bit_mono2stereo (real *,unsigned char *,int *);
|
|
|
|
extern int synth_4to1 (real *,int,unsigned char *,int *);
|
|
extern int synth_4to1_8bit (real *,int,unsigned char *,int *);
|
|
extern int synth_4to1_mono (real *,unsigned char *,int *);
|
|
extern int synth_4to1_mono2stereo (real *,unsigned char *,int *);
|
|
extern int synth_4to1_8bit_mono (real *,unsigned char *,int *);
|
|
extern int synth_4to1_8bit_mono2stereo (real *,unsigned char *,int *);
|
|
|
|
extern int synth_ntom (real *,int,unsigned char *,int *);
|
|
extern int synth_ntom_8bit (real *,int,unsigned char *,int *);
|
|
extern int synth_ntom_mono (real *,unsigned char *,int *);
|
|
extern int synth_ntom_mono2stereo (real *,unsigned char *,int *);
|
|
extern int synth_ntom_8bit_mono (real *,unsigned char *,int *);
|
|
extern int synth_ntom_8bit_mono2stereo (real *,unsigned char *,int *);
|
|
|
|
extern void rewindNbits(int bits);
|
|
extern int hsstell(void);
|
|
extern void set_pointer(long);
|
|
extern void huffman_decoder(int ,int *);
|
|
extern void huffman_count1(int,int *);
|
|
extern void print_stat(struct frame *fr,unsigned long no,long buffsize,struct audio_info_struct *ai);
|
|
extern int get_songlen(struct frame *fr,int no);
|
|
|
|
extern void init_layer3(int);
|
|
extern void init_layer2(void);
|
|
extern void make_decode_tables(long scale);
|
|
extern int make_conv16to8_table(int);
|
|
extern void dct64(real *,real *,real *);
|
|
|
|
#ifdef USE_MMX
|
|
extern void dct64_MMX(short *a,short *b,real *c);
|
|
extern int synth_1to1_MMX(real *, int, short *, short *, int *);
|
|
#endif
|
|
|
|
extern int synth_ntom_set_step(long,long);
|
|
|
|
|
|
extern unsigned char *conv16to8;
|
|
extern long freqs[9];
|
|
extern real muls[27][64];
|
|
extern real decwin[512+32];
|
|
#ifndef USE_MMX
|
|
extern real *pnts[5];
|
|
#endif
|
|
|
|
extern real equalizer[2][32];
|
|
extern real equalizer_sum[2][32];
|
|
extern int equalizer_cnt;
|
|
|
|
extern struct audio_name audio_val2name[];
|
|
|
|
//extern struct parameter param;
|
|
|
|
/* 486 optimizations */
|
|
#define FIR_BUFFER_SIZE 128
|
|
extern void dct64_486(int *a,int *b,real *c);
|
|
extern int synth_1to1_486(real *bandPtr,int channel,unsigned char *out,int nb_blocks);
|
|
|
|
/* 3DNow! optimizations */
|
|
#ifdef USE_3DNOW
|
|
extern int getcpuflags(void);
|
|
extern void dct36(real *,real *,real *,real *,real *);
|
|
extern void dct36_3dnow(real *,real *,real *,real *,real *);
|
|
extern int synth_1to1_3dnow(real *,int,unsigned char *,int *);
|
|
#endif
|
|
|
|
/* avoid the SIGINT in terminal control */
|
|
void next_track(void);
|
|
extern long outscale;
|
|
|
|
#endif
|
|
|
|
void set_pointer(long backstep);
|
|
int __stdcall create_reader(struct reader *rd,byte *buffer, int buffsize);
|
|
int __stdcall init_reader(struct reader *rd, char *file);
|
|
int __stdcall decode_header(struct frame *fr,unsigned long newhead);
|
|
int __stdcall set_reader(struct reader *rd, unsigned int filepos);
|
|
double pow_test(double, double);
|
|
void * __cdecl mem_cpy(void * dst,const void * src,size_t count);
|
|
void init_dct();
|
|
void reset_mpg();
|
|
#ifdef __cplusplus
|
|
}
|
|
#endif
|