Mercurial > SDL_sound_CoreAudio
annotate decoders/mpglib/mpg123_sdlsound.h @ 355:5dbf2f9cde00
Added docs stuff.
| author | Ryan C. Gordon <icculus@icculus.org> |
|---|---|
| date | Fri, 07 Jun 2002 13:26:13 +0000 |
| parents | 31cc49d7d0ce |
| children | cbb15ecf423a |
| rev | line source |
|---|---|
| 261 | 1 #include <stdio.h> |
| 2 #include <string.h> | |
| 3 #include <signal.h> | |
| 4 | |
| 322 | 5 #if !defined(WIN32) && !defined(macintosh) |
| 261 | 6 #include <unistd.h> |
| 7 #endif | |
| 8 | |
| 9 #include <math.h> | |
| 10 | |
| 322 | 11 #if defined(_WIN32) |
| 261 | 12 # undef WIN32 |
| 13 # define WIN32 | |
| 322 | 14 #endif |
| 15 | |
| 16 #if defined(WIN32) || defined(macintosh) | |
| 261 | 17 |
| 18 # define M_PI 3.14159265358979323846 | |
| 19 # define M_SQRT2 1.41421356237309504880 | |
| 20 # define REAL_IS_FLOAT | |
| 21 # define NEW_DCT9 | |
| 22 | |
| 23 # define random rand | |
| 24 # define srandom srand | |
| 25 | |
| 26 #endif | |
| 27 | |
| 28 #ifdef REAL_IS_FLOAT | |
| 29 # define real float | |
| 30 #elif defined(REAL_IS_LONG_DOUBLE) | |
| 31 # define real long double | |
| 32 #else | |
| 33 # define real double | |
| 34 #endif | |
| 35 | |
| 36 #ifdef __GNUC__ | |
| 37 #define INLINE inline | |
|
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Patches for Visual C compatibility.
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38 #elif (defined _MSC_VER) |
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7b1df7526915
Patches for Visual C compatibility.
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parents:
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39 #define INLINE __inline__ |
| 261 | 40 #else |
| 41 #define INLINE | |
| 42 #endif | |
| 43 | |
| 44 /* AUDIOBUFSIZE = n*64 with n=1,2,3 ... */ | |
| 45 #define AUDIOBUFSIZE 16384 | |
| 46 | |
| 47 #ifndef FALSE | |
| 48 #define FALSE 0 | |
| 49 #endif | |
| 50 #ifndef FALSE | |
| 51 #define TRUE 1 | |
| 52 #endif | |
| 53 | |
| 54 #define SBLIMIT 32 | |
| 55 #define SSLIMIT 18 | |
| 56 | |
| 57 #define SCALE_BLOCK 12 | |
| 58 | |
| 59 | |
| 60 #define MPG_MD_STEREO 0 | |
| 61 #define MPG_MD_JOINT_STEREO 1 | |
| 62 #define MPG_MD_DUAL_CHANNEL 2 | |
| 63 #define MPG_MD_MONO 3 | |
| 64 | |
| 65 #define MAXFRAMESIZE 1792 | |
| 66 | |
| 67 | |
| 68 /* Pre Shift fo 16 to 8 bit converter table */ | |
| 69 #define AUSHIFT (3) | |
| 70 | |
| 71 struct frame { | |
| 72 int stereo; | |
| 73 int jsbound; | |
| 74 int single; | |
| 75 int lsf; | |
| 76 int mpeg25; | |
| 77 int header_change; | |
| 78 int lay; | |
| 79 int error_protection; | |
| 80 int bitrate_index; | |
| 81 int sampling_frequency; | |
| 82 int padding; | |
| 83 int extension; | |
| 84 int mode; | |
| 85 int mode_ext; | |
| 86 int copyright; | |
| 87 int original; | |
| 88 int emphasis; | |
| 89 int framesize; /* computed framesize */ | |
| 90 | |
| 91 /* layer2 stuff */ | |
| 92 int II_sblimit; | |
| 93 void *alloc; | |
| 94 }; | |
| 95 | |
| 96 struct parameter { | |
| 97 int quiet; /* shut up! */ | |
| 98 int tryresync; /* resync stream after error */ | |
| 99 int verbose; /* verbose level */ | |
| 100 int checkrange; | |
| 101 }; | |
| 102 | |
|
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103 struct mpstr; /* forward declaration. */ |
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104 |
| 261 | 105 extern unsigned int get1bit(void); |
| 106 extern unsigned int getbits(int); | |
| 107 extern unsigned int getbits_fast(int); | |
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108 extern int set_pointer(long,struct mpstr *); |
| 261 | 109 |
| 110 extern unsigned char *wordpointer; | |
| 111 extern int bitindex; | |
| 112 | |
| 113 extern void make_decode_tables(long scaleval); | |
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114 extern int do_layer3(struct frame *fr,unsigned char *,int *,struct mpstr *); |
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115 extern int do_layer2(struct frame *fr,unsigned char *,int *,struct mpstr *); |
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116 extern int do_layer1(struct frame *fr,unsigned char *,int *,struct mpstr *); |
| 261 | 117 extern int decode_header(struct frame *fr,unsigned long newhead); |
| 118 | |
| 119 | |
| 120 | |
| 121 struct gr_info_s { | |
| 122 int scfsi; | |
| 123 unsigned part2_3_length; | |
| 124 unsigned big_values; | |
| 125 unsigned scalefac_compress; | |
| 126 unsigned block_type; | |
| 127 unsigned mixed_block_flag; | |
| 128 unsigned table_select[3]; | |
| 129 unsigned subblock_gain[3]; | |
| 130 unsigned maxband[3]; | |
| 131 unsigned maxbandl; | |
| 132 unsigned maxb; | |
| 133 unsigned region1start; | |
| 134 unsigned region2start; | |
| 135 unsigned preflag; | |
| 136 unsigned scalefac_scale; | |
| 137 unsigned count1table_select; | |
| 138 real *full_gain[3]; | |
| 139 real *pow2gain; | |
| 140 }; | |
| 141 | |
| 142 struct III_sideinfo | |
| 143 { | |
| 144 unsigned main_data_begin; | |
| 145 unsigned private_bits; | |
| 146 struct { | |
| 147 struct gr_info_s gr[2]; | |
| 148 } ch[2]; | |
| 149 }; | |
| 150 | |
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151 |
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parents:
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152 extern int synth_1to1 (real *,int,unsigned char *,int *,struct mpstr *); |
| 261 | 153 extern int synth_1to1_8bit (real *,int,unsigned char *,int *); |
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parents:
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154 extern int synth_1to1_mono (real *,unsigned char *,int *,struct mpstr *); |
| 261 | 155 extern int synth_1to1_mono2stereo (real *,unsigned char *,int *); |
| 156 extern int synth_1to1_8bit_mono (real *,unsigned char *,int *); | |
| 157 extern int synth_1to1_8bit_mono2stereo (real *,unsigned char *,int *); | |
| 158 | |
| 159 extern int synth_2to1 (real *,int,unsigned char *,int *); | |
| 160 extern int synth_2to1_8bit (real *,int,unsigned char *,int *); | |
| 161 extern int synth_2to1_mono (real *,unsigned char *,int *); | |
| 162 extern int synth_2to1_mono2stereo (real *,unsigned char *,int *); | |
| 163 extern int synth_2to1_8bit_mono (real *,unsigned char *,int *); | |
| 164 extern int synth_2to1_8bit_mono2stereo (real *,unsigned char *,int *); | |
| 165 | |
| 166 extern int synth_4to1 (real *,int,unsigned char *,int *); | |
| 167 extern int synth_4to1_8bit (real *,int,unsigned char *,int *); | |
| 168 extern int synth_4to1_mono (real *,unsigned char *,int *); | |
| 169 extern int synth_4to1_mono2stereo (real *,unsigned char *,int *); | |
| 170 extern int synth_4to1_8bit_mono (real *,unsigned char *,int *); | |
| 171 extern int synth_4to1_8bit_mono2stereo (real *,unsigned char *,int *); | |
| 172 | |
| 173 extern int synth_ntom (real *,int,unsigned char *,int *); | |
| 174 extern int synth_ntom_8bit (real *,int,unsigned char *,int *); | |
| 175 extern int synth_ntom_mono (real *,unsigned char *,int *); | |
| 176 extern int synth_ntom_mono2stereo (real *,unsigned char *,int *); | |
| 177 extern int synth_ntom_8bit_mono (real *,unsigned char *,int *); | |
| 178 extern int synth_ntom_8bit_mono2stereo (real *,unsigned char *,int *); | |
| 179 | |
| 180 extern void rewindNbits(int bits); | |
| 181 extern int hsstell(void); | |
| 182 extern int get_songlen(struct frame *fr,int no); | |
| 183 | |
| 184 extern void init_layer3(int); | |
| 185 extern void init_layer2(void); | |
| 186 extern void make_decode_tables(long scale); | |
| 187 extern void make_conv16to8_table(int); | |
| 188 extern void dct64(real *,real *,real *); | |
| 189 | |
| 190 extern void synth_ntom_set_step(long,long); | |
| 191 | |
| 192 extern unsigned char *conv16to8; | |
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a9e211c3faa4
Cleanups and audio format determination.
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diff
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193 extern long mpglib_freqs[9]; |
| 261 | 194 extern real muls[27][64]; |
| 195 extern real decwin[512+32]; | |
| 196 extern real *pnts[5]; | |
| 197 | |
| 198 extern struct parameter param; | |
| 199 | |
| 200 |