Mercurial > SDL_sound_CoreAudio
view decoders/timidity/timidity.h @ 562:7e08477b0fc1
MP3 decoder upgrade work.
Ripped out SMPEG and mpglib support, replaced it with "mpg123.c" and libmpg123.
libmpg123 is a much better version of mpglib, so it should solve all the
problems about MP3's not seeking, or most modern MP3's not playing at all,
etc. Since you no longer have to make a tradeoff with SMPEG for features, and
SMPEG is basically rotting, I removed it from the project.
There is still work to be done with libmpg123...there are MMX, 3DNow, SSE,
Altivec, etc decoders which we don't have enabled at the moment, and the
build system could use some work to make this compile more cleanly, etc.
Still: huge win.
author | Ryan C. Gordon <icculus@icculus.org> |
---|---|
date | Fri, 30 Jan 2009 02:44:47 -0500 |
parents | c66080364dff |
children |
line wrap: on
line source
/* TiMidity -- Experimental MIDI to WAVE converter Copyright (C) 1995 Tuukka Toivonen <toivonen@clinet.fi> This program is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; either version 2 of the License, or (at your option) any later version. This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. You should have received a copy of the GNU General Public License along with this program; if not, write to the Free Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */ #ifndef TIMIDITY_H #define TIMIDITY_H #ifdef __cplusplus extern "C" { #endif typedef Sint16 sample_t; typedef Sint32 final_volume_t; #define VIBRATO_SAMPLE_INCREMENTS 32 /* Maximum polyphony. */ #define MAX_VOICES 48 typedef struct { Sint32 loop_start, loop_end, data_length, sample_rate, low_vel, high_vel, low_freq, high_freq, root_freq; Sint32 envelope_rate[6], envelope_offset[6]; float volume; sample_t *data; Sint32 tremolo_sweep_increment, tremolo_phase_increment, vibrato_sweep_increment, vibrato_control_ratio; Uint8 tremolo_depth, vibrato_depth, modes; Sint8 panning, note_to_use; } Sample; typedef struct { int bank, program, volume, sustain, panning, pitchbend, expression, mono, /* one note only on this channel -- not implemented yet */ pitchsens; /* chorus, reverb... Coming soon to a 300-MHz, eight-way superscalar processor near you */ float pitchfactor; /* precomputed pitch bend factor to save some fdiv's */ } Channel; typedef struct { Uint8 status, channel, note, velocity; Sample *sample; Sint32 orig_frequency, frequency, sample_offset, sample_increment, envelope_volume, envelope_target, envelope_increment, tremolo_sweep, tremolo_sweep_position, tremolo_phase, tremolo_phase_increment, vibrato_sweep, vibrato_sweep_position; final_volume_t left_mix, right_mix; float left_amp, right_amp, tremolo_volume; Sint32 vibrato_sample_increment[VIBRATO_SAMPLE_INCREMENTS]; int vibrato_phase, vibrato_control_ratio, vibrato_control_counter, envelope_stage, control_counter, panning, panned; } Voice; typedef struct { int samples; Sample *sample; } Instrument; /* Shared data */ typedef struct { char *name; int note, amp, pan, strip_loop, strip_envelope, strip_tail; } ToneBankElement; typedef struct { ToneBankElement *tone; Instrument *instrument[128]; } ToneBank; typedef struct { Sint32 time; Uint8 channel, type, a, b; } MidiEvent; typedef struct { MidiEvent event; void *next; } MidiEventList; struct _DLS_Data; typedef struct _DLS_Data DLS_Patches; typedef struct { int playing; SDL_RWops *rw; Sint32 rate; Sint32 encoding; float master_volume; Sint32 amplification; DLS_Patches *patches; ToneBank *tonebank[128]; ToneBank *drumset[128]; Instrument *default_instrument; int default_program; void (*write)(void *dp, Sint32 *lp, Sint32 c); int buffer_size; sample_t *resample_buffer; Sint32 *common_buffer; Sint32 *buffer_pointer; /* These would both fit into 32 bits, but they are often added in large multiples, so it's simpler to have two roomy ints */ /* samples per MIDI delta-t */ Sint32 sample_increment; Sint32 sample_correction; Channel channel[16]; Voice voice[MAX_VOICES]; int voices; Sint32 drumchannels; Sint32 buffered_count; Sint32 control_ratio; Sint32 lost_notes; Sint32 cut_notes; Sint32 samples; MidiEvent *events; MidiEvent *current_event; MidiEventList *evlist; Sint32 current_sample; Sint32 event_count; Sint32 at; Sint32 groomed_event_count; } MidiSong; /* Some of these are not defined in timidity.c but are here for convenience */ extern int Timidity_Init(void); extern int Timidity_Init_NoConfig(void); extern void Timidity_SetVolume(MidiSong *song, int volume); extern int Timidity_PlaySome(MidiSong *song, void *stream, Sint32 len); extern DLS_Patches *Timidity_LoadDLS(SDL_RWops *rw); extern void Timidity_FreeDLS(DLS_Patches *patches); extern MidiSong *Timidity_LoadDLSSong(SDL_RWops *rw, DLS_Patches *patches, SDL_AudioSpec *audio); extern MidiSong *Timidity_LoadSong(SDL_RWops *rw, SDL_AudioSpec *audio); extern void Timidity_Start(MidiSong *song); extern void Timidity_Seek(MidiSong *song, Uint32 ms); extern Uint32 Timidity_GetSongLength(MidiSong *song); /* returns millseconds */ extern void Timidity_FreeSong(MidiSong *song); extern void Timidity_Exit(void); #ifdef __cplusplus } #endif #endif /* TIMIDITY_H */