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| Rev | Author | Line No. | Line |
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| 1905 | serge | 1 | /* |
| 2 | decode.h: common definitions for decode functions |
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| 3 | |||
| 4 | This file is strongly tied with optimize.h concerning the synth functions. |
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| 5 | Perhaps one should restructure that a bit. |
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| 6 | |||
| 7 | copyright 2007-8 by the mpg123 project - free software under the terms of the LGPL 2.1 |
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| 8 | see COPYING and AUTHORS files in distribution or http://mpg123.org |
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| 9 | initially written by Thomas Orgis, taking WRITE_SAMPLE from decode.c |
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| 10 | */ |
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| 11 | #ifndef MPG123_DECODE_H |
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| 12 | #define MPG123_DECODE_H |
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| 13 | |||
| 14 | /* Selection of class of output routines for basic format. */ |
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| 15 | #ifndef REAL_IS_FIXED |
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| 16 | #define OUT_FORMATS 4 /* Basic output formats: 16bit, 8bit, real and s32 */ |
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| 17 | #else |
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| 18 | #define OUT_FORMATS 2 /* Only up to 16bit */ |
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| 19 | #endif |
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| 20 | |||
| 21 | #define OUT_16 0 |
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| 22 | #define OUT_8 1 |
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| 23 | /* Those are defined but not supported for fixed point decoding! */ |
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| 24 | #define OUT_REAL 2 /* Write a floating point sample (that is, one matching the internal real type). */ |
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| 25 | #define OUT_S32 3 |
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| 26 | |||
| 27 | #ifdef NO_NTOM |
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| 28 | #define NTOM_MAX 1 |
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| 29 | #else |
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| 30 | #define NTOM_MAX 8 /* maximum allowed factor for upsampling */ |
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| 31 | #define NTOM_MAX_FREQ 96000 /* maximum frequency to upsample to / downsample from */ |
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| 32 | #define NTOM_MUL (32768) |
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| 33 | #endif |
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| 34 | |||
| 35 | /* Let's collect all possible synth functions here, for an overview. |
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| 36 | If they are actually defined and used depends on preprocessor machinery. |
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| 37 | See synth.c and optimize.h for that, also some special C and assembler files. */ |
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| 38 | |||
| 39 | /* The call of left and right plain synth, wrapped. |
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| 40 | This may be replaced by a direct stereo optimized synth. */ |
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| 41 | int synth_stereo_wrap(real*, real*, mpg123_handle*); |
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| 42 | |||
| 43 | #ifndef NO_16BIT |
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| 44 | /* The signed-16bit-producing variants. */ |
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| 45 | int synth_1to1 (real*, int, mpg123_handle*, int); |
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| 46 | int synth_1to1_dither (real*, int, mpg123_handle*, int); |
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| 47 | int synth_1to1_i386 (real*, int, mpg123_handle*, int); |
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| 48 | int synth_1to1_i586 (real*, int, mpg123_handle*, int); |
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| 49 | int synth_1to1_i586_dither(real*, int, mpg123_handle*, int); |
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| 50 | int synth_1to1_mmx (real*, int, mpg123_handle*, int); |
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| 51 | int synth_1to1_3dnow (real*, int, mpg123_handle*, int); |
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| 52 | int synth_1to1_sse (real*, int, mpg123_handle*, int); |
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| 53 | int synth_1to1_stereo_sse (real*, real*, mpg123_handle*); |
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| 54 | int synth_1to1_3dnowext (real*, int, mpg123_handle*, int); |
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| 55 | int synth_1to1_altivec (real*, int, mpg123_handle*, int); |
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| 56 | int synth_1to1_stereo_altivec(real*, real*, mpg123_handle*); |
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| 57 | int synth_1to1_x86_64 (real*, int, mpg123_handle*, int); |
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| 58 | int synth_1to1_stereo_x86_64(real*, real*, mpg123_handle*); |
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| 59 | int synth_1to1_arm (real*, int, mpg123_handle*, int); |
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| 60 | /* This is different, special usage in layer3.c only. |
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| 61 | Hence, the name... and now forget about it. |
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| 62 | Never use it outside that special portion of code inside layer3.c! */ |
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| 63 | int absynth_1to1_i486(real*, int, mpg123_handle*, int); |
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| 64 | /* These mono/stereo converters use one of the above for the grunt work. */ |
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| 65 | int synth_1to1_mono (real*, mpg123_handle*); |
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| 66 | int synth_1to1_mono2stereo(real*, mpg123_handle*); |
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| 67 | |||
| 68 | /* Sample rate decimation comes in less flavours. */ |
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| 69 | #ifndef NO_DOWNSAMPLE |
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| 70 | int synth_2to1 (real*, int, mpg123_handle*, int); |
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| 71 | int synth_2to1_dither (real*, int, mpg123_handle*, int); |
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| 72 | int synth_2to1_i386 (real*, int, mpg123_handle*, int); |
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| 73 | int synth_2to1_mono (real*, mpg123_handle*); |
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| 74 | int synth_2to1_mono2stereo(real*, mpg123_handle*); |
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| 75 | int synth_4to1 (real *,int, mpg123_handle*, int); |
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| 76 | int synth_4to1_dither (real *,int, mpg123_handle*, int); |
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| 77 | int synth_4to1_i386 (real*, int, mpg123_handle*, int); |
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| 78 | int synth_4to1_mono (real*, mpg123_handle*); |
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| 79 | int synth_4to1_mono2stereo(real*, mpg123_handle*); |
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| 80 | #endif |
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| 81 | #ifndef NO_NTOM |
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| 82 | /* NtoM is really just one implementation. */ |
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| 83 | int synth_ntom (real *,int, mpg123_handle*, int); |
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| 84 | int synth_ntom_mono (real *, mpg123_handle *); |
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| 85 | int synth_ntom_mono2stereo (real *, mpg123_handle *); |
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| 86 | #endif |
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| 87 | #endif |
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| 88 | |||
| 89 | #ifndef NO_8BIT |
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| 90 | /* The 8bit-producing variants. */ |
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| 91 | /* There are direct 8-bit synths and wrappers over a possibly optimized 16bit one. */ |
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| 92 | int synth_1to1_8bit (real*, int, mpg123_handle*, int); |
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| 93 | int synth_1to1_8bit_i386 (real*, int, mpg123_handle*, int); |
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| 94 | #ifndef NO_16BIT |
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| 95 | int synth_1to1_8bit_wrap (real*, int, mpg123_handle*, int); |
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| 96 | int synth_1to1_8bit_mono (real*, mpg123_handle*); |
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| 97 | #endif |
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| 98 | int synth_1to1_8bit_mono2stereo(real*, mpg123_handle*); |
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| 99 | #ifndef NO_16BIT |
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| 100 | int synth_1to1_8bit_wrap_mono (real*, mpg123_handle*); |
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| 101 | int synth_1to1_8bit_wrap_mono2stereo(real*, mpg123_handle*); |
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| 102 | #endif |
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| 103 | #ifndef NO_DOWNSAMPLE |
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| 104 | int synth_2to1_8bit (real*, int, mpg123_handle*, int); |
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| 105 | int synth_2to1_8bit_i386 (real*, int, mpg123_handle*, int); |
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| 106 | int synth_2to1_8bit_mono (real*, mpg123_handle*); |
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| 107 | int synth_2to1_8bit_mono2stereo(real*, mpg123_handle*); |
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| 108 | int synth_4to1_8bit (real*, int, mpg123_handle*, int); |
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| 109 | int synth_4to1_8bit_i386 (real*, int, mpg123_handle*, int); |
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| 110 | int synth_4to1_8bit_mono (real*, mpg123_handle*); |
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| 111 | int synth_4to1_8bit_mono2stereo(real*, mpg123_handle*); |
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| 112 | #endif |
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| 113 | #ifndef NO_NTOM |
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| 114 | int synth_ntom_8bit (real*, int, mpg123_handle*, int); |
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| 115 | int synth_ntom_8bit_mono (real*, mpg123_handle*); |
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| 116 | int synth_ntom_8bit_mono2stereo(real*, mpg123_handle*); |
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| 117 | void ntom_set_ntom(mpg123_handle *fr, off_t num); |
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| 118 | #endif |
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| 119 | #endif |
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| 120 | |||
| 121 | #ifndef REAL_IS_FIXED |
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| 122 | |||
| 123 | #ifndef NO_REAL |
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| 124 | /* The real-producing variants. */ |
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| 125 | int synth_1to1_real (real*, int, mpg123_handle*, int); |
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| 126 | int synth_1to1_real_i386 (real*, int, mpg123_handle*, int); |
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| 127 | int synth_1to1_real_sse (real*, int, mpg123_handle*, int); |
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| 128 | int synth_1to1_real_stereo_sse (real*, real*, mpg123_handle*); |
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| 129 | int synth_1to1_real_x86_64 (real*, int, mpg123_handle*, int); |
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| 130 | int synth_1to1_real_stereo_x86_64(real*, real*, mpg123_handle*); |
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| 131 | int synth_1to1_real_altivec (real*, int, mpg123_handle*, int); |
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| 132 | int synth_1to1_real_stereo_altivec(real*, real*, mpg123_handle*); |
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| 133 | int synth_1to1_real_mono (real*, mpg123_handle*); |
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| 134 | int synth_1to1_real_mono2stereo(real*, mpg123_handle*); |
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| 135 | #ifndef NO_DOWNSAMPLE |
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| 136 | int synth_2to1_real (real*, int, mpg123_handle*, int); |
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| 137 | int synth_2to1_real_i386 (real*, int, mpg123_handle*, int); |
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| 138 | int synth_2to1_real_mono (real*, mpg123_handle*); |
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| 139 | int synth_2to1_real_mono2stereo(real*, mpg123_handle*); |
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| 140 | int synth_4to1_real (real*, int, mpg123_handle*, int); |
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| 141 | int synth_4to1_real_i386 (real*, int, mpg123_handle*, int); |
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| 142 | int synth_4to1_real_mono (real*, mpg123_handle*); |
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| 143 | int synth_4to1_real_mono2stereo(real*, mpg123_handle*); |
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| 144 | #endif |
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| 145 | #ifndef NO_NTOM |
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| 146 | int synth_ntom_real (real*, int, mpg123_handle*, int); |
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| 147 | int synth_ntom_real_mono (real*, mpg123_handle*); |
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| 148 | int synth_ntom_real_mono2stereo(real*, mpg123_handle*); |
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| 149 | #endif |
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| 150 | #endif |
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| 151 | |||
| 152 | #ifndef NO_32BIT |
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| 153 | /* 32bit integer */ |
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| 154 | int synth_1to1_s32 (real*, int, mpg123_handle*, int); |
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| 155 | int synth_1to1_s32_i386 (real*, int, mpg123_handle*, int); |
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| 156 | int synth_1to1_s32_sse (real*, int, mpg123_handle*, int); |
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| 157 | int synth_1to1_s32_stereo_sse (real*, real*, mpg123_handle*); |
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| 158 | int synth_1to1_s32_x86_64 (real*, int, mpg123_handle*, int); |
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| 159 | int synth_1to1_s32_stereo_x86_64(real*, real*, mpg123_handle*); |
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| 160 | int synth_1to1_s32_altivec (real*, int, mpg123_handle*, int); |
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| 161 | int synth_1to1_s32_stereo_altivec(real*, real*, mpg123_handle*); |
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| 162 | int synth_1to1_s32_mono (real*, mpg123_handle*); |
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| 163 | int synth_1to1_s32_mono2stereo(real*, mpg123_handle*); |
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| 164 | #ifndef NO_DOWNSAMPLE |
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| 165 | int synth_2to1_s32 (real*, int, mpg123_handle*, int); |
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| 166 | int synth_2to1_s32_i386 (real*, int, mpg123_handle*, int); |
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| 167 | int synth_2to1_s32_mono (real*, mpg123_handle*); |
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| 168 | int synth_2to1_s32_mono2stereo(real*, mpg123_handle*); |
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| 169 | int synth_4to1_s32 (real*, int, mpg123_handle*, int); |
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| 170 | int synth_4to1_s32_i386 (real*, int, mpg123_handle*, int); |
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| 171 | int synth_4to1_s32_mono (real*, mpg123_handle*); |
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| 172 | int synth_4to1_s32_mono2stereo(real*, mpg123_handle*); |
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| 173 | #endif |
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| 174 | #ifndef NO_NTOM |
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| 175 | int synth_ntom_s32 (real*, int, mpg123_handle*, int); |
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| 176 | int synth_ntom_s32_mono (real*, mpg123_handle*); |
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| 177 | int synth_ntom_s32_mono2stereo(real*, mpg123_handle*); |
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| 178 | #endif |
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| 179 | #endif |
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| 180 | |||
| 181 | #endif /* FIXED */ |
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| 182 | |||
| 183 | |||
| 184 | /* Inside these synth functions, some dct64 variants may be used. |
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| 185 | The special optimized ones that only appear in assembler code are not mentioned here. |
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| 186 | And, generally, these functions are only employed in a matching synth function. */ |
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| 187 | void dct64 (real *,real *,real *); |
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| 188 | void dct64_i386 (real *,real *,real *); |
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| 189 | void dct64_altivec(real *,real *,real *); |
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| 190 | void dct64_i486(int*, int* , real*); /* Yeah, of no use outside of synth_i486.c .*/ |
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| 191 | |||
| 192 | /* This is used by the layer 3 decoder, one generic function and 3DNow variants. */ |
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| 193 | void dct36 (real *,real *,real *,real *,real *); |
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| 194 | void dct36_3dnow (real *,real *,real *,real *,real *); |
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| 195 | void dct36_3dnowext(real *,real *,real *,real *,real *); |
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| 196 | |||
| 197 | /* Tools for NtoM resampling synth, defined in ntom.c . */ |
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| 198 | int synth_ntom_set_step(mpg123_handle *fr); /* prepare ntom decoding */ |
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| 199 | unsigned long ntom_val(mpg123_handle *fr, off_t frame); /* compute ntom_val for frame offset */ |
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| 200 | /* Frame and sample offsets. */ |
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| 201 | #ifndef NO_NTOM |
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| 202 | off_t ntom_frmouts(mpg123_handle *fr, off_t frame); |
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| 203 | off_t ntom_ins2outs(mpg123_handle *fr, off_t ins); |
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| 204 | off_t ntom_frameoff(mpg123_handle *fr, off_t soff); |
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| 205 | #endif |
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| 206 | |||
| 207 | /* Initialization of any static data that majy be needed at runtime. |
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| 208 | Make sure you call these once before it is too late. */ |
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| 209 | #ifndef NO_LAYER3 |
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| 210 | void init_layer3(void); |
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| 211 | real init_layer3_gainpow2(mpg123_handle *fr, int i); |
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| 212 | void init_layer3_stuff(mpg123_handle *fr, real (*gainpow2)(mpg123_handle *fr, int i)); |
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| 213 | #endif |
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| 214 | #ifndef NO_LAYER12 |
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| 215 | void init_layer12(void); |
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| 216 | real* init_layer12_table(mpg123_handle *fr, real *table, int m); |
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| 217 | void init_layer12_stuff(mpg123_handle *fr, real* (*init_table)(mpg123_handle *fr, real *table, int m)); |
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| 218 | #endif |
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| 219 | |||
| 220 | void prepare_decode_tables(void); |
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| 221 | |||
| 222 | extern real *pnts[5]; /* tabinit provides, dct64 needs */ |
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| 223 | |||
| 224 | /* Runtime (re)init functions; needed more often. */ |
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| 225 | void make_decode_tables(mpg123_handle *fr); /* For every volume change. */ |
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| 226 | /* Stuff needed after updating synth setup (see set_synth_functions()). */ |
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| 227 | |||
| 228 | #ifdef OPT_MMXORSSE |
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| 229 | /* Special treatment for mmx-like decoders, these functions go into the slots below. */ |
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| 230 | void make_decode_tables_mmx(mpg123_handle *fr); |
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| 231 | #ifndef NO_LAYER3 |
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| 232 | real init_layer3_gainpow2_mmx(mpg123_handle *fr, int i); |
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| 233 | #endif |
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| 234 | #ifndef NO_LAYER12 |
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| 235 | real* init_layer12_table_mmx(mpg123_handle *fr, real *table, int m); |
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| 236 | #endif |
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| 237 | #endif |
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| 238 | |||
| 239 | #ifndef NO_8BIT |
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| 240 | /* Needed when switching to 8bit output. */ |
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| 241 | int make_conv16to8_table(mpg123_handle *fr); |
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| 242 | #endif |
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| 243 | |||
| 244 | /* These are the actual workers. |
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| 245 | They operate on the parsed frame data and handle decompression to audio samples. |
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| 246 | The synth functions defined above are called from inside the layer handlers. */ |
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| 247 | |||
| 248 | #ifndef NO_LAYER3 |
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| 249 | int do_layer3(mpg123_handle *fr); |
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| 250 | #endif |
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| 251 | #ifndef NO_LAYER2 |
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| 252 | int do_layer2(mpg123_handle *fr); |
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| 253 | #endif |
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| 254 | #ifndef NO_LAYER1 |
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| 255 | int do_layer1(mpg123_handle *fr); |
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| 256 | #endif |
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| 257 | /* There's an 3DNow counterpart in asm. */ |
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| 258 | void do_equalizer(real *bandPtr,int channel, real equalizer[2][32]); |
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| 259 | |||
| 260 | #endif |