| 0,0 → 1,362 |
|---|
| /* |
| 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); |
| }; |
| |
| int parse_new_id3(struct reader *rd, unsigned long newhead); |
| |
| 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 |