diff options
Diffstat (limited to 'OpenAL32/alMidi.c')
| -rw-r--r-- | OpenAL32/alMidi.c | 232 |
1 files changed, 1 insertions, 231 deletions
diff --git a/OpenAL32/alMidi.c b/OpenAL32/alMidi.c index 845b0faf..d1231fa7 100644 --- a/OpenAL32/alMidi.c +++ b/OpenAL32/alMidi.c @@ -6,149 +6,13 @@ #include <string.h> #include <limits.h> -#include "alMidi.h" #include "alMain.h" #include "alError.h" #include "evtqueue.h" #include "rwlock.h" #include "alu.h" - -/* Microsecond resolution */ -#define TICKS_PER_SECOND (1000000) - -/* MIDI events */ -#define SYSEX_EVENT (0xF0) - -/* MIDI controllers */ -#define CTRL_BANKSELECT_MSB (0) -#define CTRL_BANKSELECT_LSB (32) -#define CTRL_ALLNOTESOFF (123) - - -void MidiSynth_Construct(MidiSynth *self, ALCdevice *device) -{ - InitEvtQueue(&self->EventQueue); - - RWLockInit(&self->Lock); - - self->Gain = 1.0f; - self->State = AL_INITIAL; - - self->LastEvtTime = 0; - self->NextEvtTime = UINT64_MAX; - self->SamplesSinceLast = 0.0; - self->SamplesToNext = 0.0; - - self->SamplesPerTick = (ALdouble)device->Frequency / TICKS_PER_SECOND; -} - -void MidiSynth_Destruct(MidiSynth *self) -{ - ResetEvtQueue(&self->EventQueue); -} - -const char *MidiSynth_getFontName(const MidiSynth* UNUSED(self), const char *filename) -{ - if(!filename || !filename[0]) - filename = getenv("ALSOFT_SOUNDFONT"); - if(!filename || !filename[0]) - filename = GetConfigValue("midi", "soundfont", ""); - if(!filename[0]) - WARN("No default soundfont found\n"); - - return filename; -} - -extern inline void MidiSynth_setGain(MidiSynth *self, ALfloat gain); -extern inline ALfloat MidiSynth_getGain(const MidiSynth *self); -extern inline void MidiSynth_setState(MidiSynth *self, ALenum state); - -void MidiSynth_stop(MidiSynth *self) -{ - ResetEvtQueue(&self->EventQueue); - - self->LastEvtTime = 0; - self->NextEvtTime = UINT64_MAX; - self->SamplesSinceLast = 0.0; - self->SamplesToNext = 0.0; -} - -extern inline void MidiSynth_reset(MidiSynth *self); - -ALuint64 MidiSynth_getTime(const MidiSynth *self) -{ - ALuint64 time = self->LastEvtTime + (self->SamplesSinceLast/self->SamplesPerTick); - return clampu(time, self->LastEvtTime, self->NextEvtTime); -} - -extern inline ALuint64 MidiSynth_getNextEvtTime(const MidiSynth *self); - -void MidiSynth_setSampleRate(MidiSynth *self, ALdouble srate) -{ - ALdouble sampletickrate = srate / TICKS_PER_SECOND; - - self->SamplesSinceLast = self->SamplesSinceLast * sampletickrate / self->SamplesPerTick; - self->SamplesToNext = self->SamplesToNext * sampletickrate / self->SamplesPerTick; - self->SamplesPerTick = sampletickrate; -} - -extern inline void MidiSynth_update(MidiSynth *self, ALCdevice *device); - -ALenum MidiSynth_insertEvent(MidiSynth *self, ALuint64 time, ALuint event, ALsizei param1, ALsizei param2) -{ - MidiEvent entry; - ALenum err; - - entry.time = time; - entry.event = event; - entry.param.val[0] = param1; - entry.param.val[1] = param2; - - err = InsertEvtQueue(&self->EventQueue, &entry); - if(err != AL_NO_ERROR) return err; - - if(entry.time < self->NextEvtTime) - { - self->NextEvtTime = entry.time; - - self->SamplesToNext = (self->NextEvtTime - self->LastEvtTime) * self->SamplesPerTick; - self->SamplesToNext -= self->SamplesSinceLast; - } - - return AL_NO_ERROR; -} - -ALenum MidiSynth_insertSysExEvent(MidiSynth *self, ALuint64 time, const ALbyte *data, ALsizei size) -{ - MidiEvent entry; - ALenum err; - - entry.time = time; - entry.event = SYSEX_EVENT; - entry.param.sysex.size = size; - entry.param.sysex.data = malloc(size); - if(!entry.param.sysex.data) - return AL_OUT_OF_MEMORY; - memcpy(entry.param.sysex.data, data, size); - - err = InsertEvtQueue(&self->EventQueue, &entry); - if(err != AL_NO_ERROR) - { - free(entry.param.sysex.data); - return err; - } - - if(entry.time < self->NextEvtTime) - { - self->NextEvtTime = entry.time; - - self->SamplesToNext = (self->NextEvtTime - self->LastEvtTime) * self->SamplesPerTick; - self->SamplesToNext -= self->SamplesSinceLast; - } - - return AL_NO_ERROR; -} +#include "midi/base.h" MidiSynth *SynthCreate(ALCdevice *device) @@ -360,97 +224,3 @@ AL_API void AL_APIENTRY alMidiGainSOFT(ALfloat value) done: ALCcontext_DecRef(context); } - - -void InitEvtQueue(EvtQueue *queue) -{ - queue->events = NULL; - queue->maxsize = 0; - queue->size = 0; - queue->pos = 0; -} - -void ResetEvtQueue(EvtQueue *queue) -{ - ALsizei i; - for(i = 0;i < queue->size;i++) - { - if(queue->events[i].event == SYSEX_EVENT) - { - free(queue->events[i].param.sysex.data); - queue->events[i].param.sysex.data = NULL; - } - } - - free(queue->events); - queue->events = NULL; - queue->maxsize = 0; - queue->size = 0; - queue->pos = 0; -} - -ALenum InsertEvtQueue(EvtQueue *queue, const MidiEvent *evt) -{ - ALsizei pos; - - if(queue->maxsize == queue->size) - { - if(queue->pos > 0) - { - /* Queue has some stale entries, remove them to make space for more - * events. */ - for(pos = 0;pos < queue->pos;pos++) - { - if(queue->events[pos].event == SYSEX_EVENT) - { - free(queue->events[pos].param.sysex.data); - queue->events[pos].param.sysex.data = NULL; - } - } - memmove(&queue->events[0], &queue->events[queue->pos], - (queue->size-queue->pos)*sizeof(queue->events[0])); - queue->size -= queue->pos; - queue->pos = 0; - } - else - { - /* Queue is full, double the allocated space. */ - void *temp = NULL; - ALsizei newsize; - - newsize = (queue->maxsize ? (queue->maxsize<<1) : 16); - if(newsize > queue->maxsize) - temp = realloc(queue->events, newsize * sizeof(queue->events[0])); - if(!temp) - return AL_OUT_OF_MEMORY; - - queue->events = temp; - queue->maxsize = newsize; - } - } - - pos = queue->pos; - if(queue->size > 0) - { - ALsizei high = queue->size - 1; - while(pos < high) - { - ALsizei mid = pos + (high-pos)/2; - if(queue->events[mid].time < evt->time) - pos = mid + 1; - else - high = mid; - } - while(pos < queue->size && queue->events[pos].time <= evt->time) - pos++; - - if(pos < queue->size) - memmove(&queue->events[pos+1], &queue->events[pos], - (queue->size-pos)*sizeof(queue->events[0])); - } - - queue->events[pos] = *evt; - queue->size++; - - return AL_NO_ERROR; -} |