Mercurial > SDL_sound_CoreAudio
annotate decoders/timidity/timidity.h @ 591:8faf61a640f0 tip
Resynced fixes for unit conversion bugs in the Ogg Tremor decoder from SoundDecoder/ALmixer.
Ogg Vorbis uses seconds and we multiply by 1000 to convert to milliseconds. But Ogg Tremor already uses milliseconds but I was still multiplying by 1000.
| author | Eric Wing <ewing . public |-at-| gmail . com> |
|---|---|
| date | Thu, 25 Oct 2012 16:34:18 -0700 |
| parents | c66080364dff |
| children |
| rev | line source |
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| 199 | 1 /* |
| 2 | |
| 3 TiMidity -- Experimental MIDI to WAVE converter | |
| 4 Copyright (C) 1995 Tuukka Toivonen <toivonen@clinet.fi> | |
| 5 | |
| 6 This program is free software; you can redistribute it and/or modify | |
| 7 it under the terms of the GNU General Public License as published by | |
| 8 the Free Software Foundation; either version 2 of the License, or | |
| 9 (at your option) any later version. | |
| 10 | |
| 11 This program is distributed in the hope that it will be useful, | |
| 12 but WITHOUT ANY WARRANTY; without even the implied warranty of | |
| 13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
| 14 GNU General Public License for more details. | |
| 15 | |
| 16 You should have received a copy of the GNU General Public License | |
| 17 along with this program; if not, write to the Free Software | |
| 18 Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. | |
| 19 | |
| 20 */ | |
| 21 | |
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22 #ifndef TIMIDITY_H |
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23 #define TIMIDITY_H |
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24 #ifdef __cplusplus |
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25 extern "C" { |
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26 #endif |
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27 |
| 199 | 28 typedef Sint16 sample_t; |
| 29 typedef Sint32 final_volume_t; | |
| 30 | |
| 31 #define VIBRATO_SAMPLE_INCREMENTS 32 | |
| 32 | |
| 33 /* Maximum polyphony. */ | |
| 34 #define MAX_VOICES 48 | |
| 35 | |
| 36 typedef struct { | |
| 37 Sint32 | |
| 38 loop_start, loop_end, data_length, | |
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39 sample_rate, low_vel, high_vel, low_freq, high_freq, root_freq; |
| 199 | 40 Sint32 |
| 41 envelope_rate[6], envelope_offset[6]; | |
| 42 float | |
| 43 volume; | |
| 44 sample_t *data; | |
| 45 Sint32 | |
| 46 tremolo_sweep_increment, tremolo_phase_increment, | |
| 47 vibrato_sweep_increment, vibrato_control_ratio; | |
| 48 Uint8 | |
| 49 tremolo_depth, vibrato_depth, | |
| 50 modes; | |
| 51 Sint8 | |
| 52 panning, note_to_use; | |
| 53 } Sample; | |
| 54 | |
| 55 typedef struct { | |
| 56 int | |
| 57 bank, program, volume, sustain, panning, pitchbend, expression, | |
| 58 mono, /* one note only on this channel -- not implemented yet */ | |
| 59 pitchsens; | |
| 60 /* chorus, reverb... Coming soon to a 300-MHz, eight-way superscalar | |
| 61 processor near you */ | |
| 62 float | |
| 63 pitchfactor; /* precomputed pitch bend factor to save some fdiv's */ | |
| 64 } Channel; | |
| 65 | |
| 66 typedef struct { | |
| 67 Uint8 | |
| 68 status, channel, note, velocity; | |
| 69 Sample *sample; | |
| 70 Sint32 | |
| 71 orig_frequency, frequency, | |
| 72 sample_offset, sample_increment, | |
| 73 envelope_volume, envelope_target, envelope_increment, | |
| 74 tremolo_sweep, tremolo_sweep_position, | |
| 75 tremolo_phase, tremolo_phase_increment, | |
| 76 vibrato_sweep, vibrato_sweep_position; | |
| 77 | |
| 78 final_volume_t left_mix, right_mix; | |
| 79 | |
| 80 float | |
| 81 left_amp, right_amp, tremolo_volume; | |
| 82 Sint32 | |
| 83 vibrato_sample_increment[VIBRATO_SAMPLE_INCREMENTS]; | |
| 84 int | |
| 85 vibrato_phase, vibrato_control_ratio, vibrato_control_counter, | |
| 86 envelope_stage, control_counter, panning, panned; | |
| 87 | |
| 88 } Voice; | |
| 89 | |
| 90 typedef struct { | |
| 91 int samples; | |
| 92 Sample *sample; | |
| 93 } Instrument; | |
| 94 | |
| 95 /* Shared data */ | |
| 96 typedef struct { | |
| 97 char *name; | |
| 98 int note, amp, pan, strip_loop, strip_envelope, strip_tail; | |
| 99 } ToneBankElement; | |
| 100 | |
| 101 typedef struct { | |
| 102 ToneBankElement *tone; | |
| 103 Instrument *instrument[128]; | |
| 104 } ToneBank; | |
| 105 | |
| 106 typedef struct { | |
| 107 Sint32 time; | |
| 108 Uint8 channel, type, a, b; | |
| 109 } MidiEvent; | |
| 110 | |
| 111 typedef struct { | |
| 112 MidiEvent event; | |
| 113 void *next; | |
| 114 } MidiEventList; | |
| 115 | |
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116 struct _DLS_Data; |
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117 typedef struct _DLS_Data DLS_Patches; |
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118 |
| 199 | 119 typedef struct { |
| 120 int playing; | |
| 121 SDL_RWops *rw; | |
| 122 Sint32 rate; | |
| 123 Sint32 encoding; | |
| 124 float master_volume; | |
| 125 Sint32 amplification; | |
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126 DLS_Patches *patches; |
| 199 | 127 ToneBank *tonebank[128]; |
| 128 ToneBank *drumset[128]; | |
| 129 Instrument *default_instrument; | |
| 130 int default_program; | |
| 131 void (*write)(void *dp, Sint32 *lp, Sint32 c); | |
| 132 int buffer_size; | |
| 133 sample_t *resample_buffer; | |
| 134 Sint32 *common_buffer; | |
| 135 Sint32 *buffer_pointer; | |
| 136 /* These would both fit into 32 bits, but they are often added in | |
| 137 large multiples, so it's simpler to have two roomy ints */ | |
| 138 /* samples per MIDI delta-t */ | |
| 139 Sint32 sample_increment; | |
| 140 Sint32 sample_correction; | |
| 141 Channel channel[16]; | |
| 142 Voice voice[MAX_VOICES]; | |
| 143 int voices; | |
| 144 Sint32 drumchannels; | |
| 145 Sint32 buffered_count; | |
| 146 Sint32 control_ratio; | |
| 147 Sint32 lost_notes; | |
| 148 Sint32 cut_notes; | |
| 149 Sint32 samples; | |
| 150 MidiEvent *events; | |
| 151 MidiEvent *current_event; | |
| 152 MidiEventList *evlist; | |
| 153 Sint32 current_sample; | |
| 154 Sint32 event_count; | |
| 155 Sint32 at; | |
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156 Sint32 groomed_event_count; |
| 199 | 157 } MidiSong; |
| 158 | |
| 159 /* Some of these are not defined in timidity.c but are here for convenience */ | |
| 160 | |
| 161 extern int Timidity_Init(void); | |
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162 extern int Timidity_Init_NoConfig(void); |
| 199 | 163 extern void Timidity_SetVolume(MidiSong *song, int volume); |
| 164 extern int Timidity_PlaySome(MidiSong *song, void *stream, Sint32 len); | |
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165 extern DLS_Patches *Timidity_LoadDLS(SDL_RWops *rw); |
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166 extern void Timidity_FreeDLS(DLS_Patches *patches); |
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167 extern MidiSong *Timidity_LoadDLSSong(SDL_RWops *rw, DLS_Patches *patches, SDL_AudioSpec *audio); |
| 199 | 168 extern MidiSong *Timidity_LoadSong(SDL_RWops *rw, SDL_AudioSpec *audio); |
| 169 extern void Timidity_Start(MidiSong *song); | |
| 312 | 170 extern void Timidity_Seek(MidiSong *song, Uint32 ms); |
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474
c66080364dff
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Ryan C. Gordon <icculus@icculus.org>
parents:
455
diff
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171 extern Uint32 Timidity_GetSongLength(MidiSong *song); /* returns millseconds */ |
| 199 | 172 extern void Timidity_FreeSong(MidiSong *song); |
| 173 extern void Timidity_Exit(void); | |
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174 |
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175 #ifdef __cplusplus |
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176 } |
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177 #endif |
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178 #endif /* TIMIDITY_H */ |