ref: 9b81f453813dfcd78ef17c04243cf3e517416bfd
dir: /src/Backends/Audio/WiiU.cpp/
// This darned thing doesn't work - sounds just randomly refuse to play,
// particularly the ones used by Organya.
// If anyone could figure out what causes this, that would be great.
#include "../Audio.h"
#include <math.h>
#include <stddef.h>
#include <stdlib.h>
#include <string.h>
#include <coreinit/cache.h>
#include <coreinit/mutex.h>
#include <coreinit/thread.h>
#include <sndcore2/core.h>
#include <sndcore2/voice.h>
#include <sndcore2/drcvs.h>
#define MIN(a, b) ((a) < (b) ? (a) : (b))
#define MAX(a, b) ((a) > (b) ? (a) : (b))
#define CLAMP(x, y, z) MIN(MAX((x), (y)), (z))
struct AudioBackend_Sound
{
signed char *samples;
size_t length;
AXVoice *voice;
unsigned int frequency;
unsigned short volume;
unsigned short pan_l;
unsigned short pan_r;
struct AudioBackend_Sound *next;
};
static void (*organya_callback)(void);
static unsigned int organya_milliseconds;
static unsigned long ticks_per_second;
static OSMutex sound_list_mutex;
static OSMutex organya_mutex;
static AudioBackend_Sound *sound_list_head;
static void CullVoices(void)
{
// Free any voices that aren't playing anymore
OSLockMutex(&sound_list_mutex);
for (AudioBackend_Sound *sound = sound_list_head; sound != NULL; sound = sound->next)
{
if (sound->voice != NULL)
{
if (!AXIsVoiceRunning(sound->voice))
{
AXVoiceBegin(sound->voice);
AXFreeVoice(sound->voice);
AXVoiceEnd(sound->voice);
sound->voice = NULL;
}
}
}
OSUnlockMutex(&sound_list_mutex);
}
static double MillibelToScale(long volume)
{
// Volume is in hundredths of a decibel, from 0 to -10000
volume = CLAMP(volume, -10000, 0);
return pow(10.0, volume / 2000.0);
}
static unsigned long GetTicksMilliseconds(void)
{
static uint64_t accumulator;
static unsigned long last_tick;
unsigned long current_tick = OSGetTick();
accumulator += current_tick - last_tick;
last_tick = current_tick;
return (accumulator * 1000) / ticks_per_second;
}
static int ThreadFunction(int argc, const char *argv[])
{
for (;;)
{
OSTestThreadCancel();
OSLockMutex(&organya_mutex);
if (organya_milliseconds == 0)
{
OSUnlockMutex(&organya_mutex);
// Do nothing
OSSleepTicks(ticks_per_second / 1000);
}
else
{
OSUnlockMutex(&organya_mutex);
// Update Organya
static unsigned long next_ticks;
for (;;)
{
unsigned long ticks = GetTicksMilliseconds();
if (ticks >= next_ticks)
break;
OSSleepTicks(ticks_per_second / 1000);
}
OSLockMutex(&organya_mutex);
next_ticks += organya_milliseconds;
OSUnlockMutex(&organya_mutex);
OSLockMutex(&sound_list_mutex);
organya_callback();
OSUnlockMutex(&sound_list_mutex);
}
}
return 0;
}
bool AudioBackend_Init(void)
{
if (!AXIsInit())
{
AXInitParams initparams = {
.renderer = AX_INIT_RENDERER_48KHZ,
.pipeline = AX_INIT_PIPELINE_SINGLE,
};
AXInitWithParams(&initparams);
}
ticks_per_second = OSGetSystemInfo()->busClockSpeed / 4;
OSInitMutex(&sound_list_mutex);
OSInitMutex(&organya_mutex);
OSRunThread(OSGetDefaultThread(0), ThreadFunction, 0, NULL);
return true;
}
void AudioBackend_Deinit(void)
{
OSCancelThread(OSGetDefaultThread(0));
OSJoinThread(OSGetDefaultThread(0), NULL);
AXQuit();
}
AudioBackend_Sound* AudioBackend_CreateSound(unsigned int frequency, const unsigned char *samples, size_t length)
{
AudioBackend_Sound *sound = (AudioBackend_Sound*)malloc(sizeof(AudioBackend_Sound));
if (sound != NULL)
{
signed char *samples_copy = (signed char*)malloc(length);
if (samples_copy != NULL)
{
// Convert to signed
for (size_t i = 0; i < length; ++i)
samples_copy[i] = samples[i] - 0x80;
DCStoreRange(samples_copy, length);
sound->samples = samples_copy;
sound->length = length;
sound->voice = NULL;
sound->frequency = frequency;
sound->volume = 0x8000;
sound->pan_l = 0x8000;
sound->pan_r = 0x8000;
OSLockMutex(&sound_list_mutex);
sound->next = sound_list_head;
sound_list_head = sound;
OSUnlockMutex(&sound_list_mutex);
return sound;
}
free(sound);
}
return NULL;
}
void AudioBackend_DestroySound(AudioBackend_Sound *sound)
{
if (sound == NULL)
return;
OSLockMutex(&sound_list_mutex);
// Unhook sound from the linked-list
for (AudioBackend_Sound **sound_pointer = &sound_list_head; *sound_pointer != NULL; sound_pointer = &(*sound_pointer)->next)
{
if (*sound_pointer == sound)
{
*sound_pointer = sound->next;
break;
}
}
OSUnlockMutex(&sound_list_mutex);
if (sound->voice != NULL)
{
AXVoiceBegin(sound->voice);
AXFreeVoice(sound->voice);
AXVoiceEnd(sound->voice);
}
free(sound->samples);
free(sound);
}
void AudioBackend_PlaySound(AudioBackend_Sound *sound, bool looping)
{
if (sound == NULL)
return;
CullVoices();
OSLockMutex(&sound_list_mutex);
if (sound->voice == NULL)
{
AXVoice *voice = AXAcquireVoice(31, NULL, NULL);
if (voice != NULL)
{
AXVoiceBegin(voice);
AXSetVoiceType(voice, 0);
AXVoiceVeData vol = {.volume = sound->volume};
AXSetVoiceVe(voice, &vol);
AXVoiceDeviceMixData mix_data[6];
memset(mix_data, 0, sizeof(mix_data));
mix_data[0].bus[0].volume = sound->pan_l;
mix_data[1].bus[0].volume = sound->pan_r;
AXSetVoiceDeviceMix(voice, AX_DEVICE_TYPE_DRC, 0, mix_data);
AXSetVoiceDeviceMix(voice, AX_DEVICE_TYPE_TV, 0, mix_data);
float srcratio = (float)sound->frequency / (float)AXGetInputSamplesPerSec();
AXSetVoiceSrcRatio(voice, srcratio);
AXSetVoiceSrcType(voice, AX_VOICE_SRC_TYPE_LINEAR);
AXVoiceOffsets offs;
offs.dataType = AX_VOICE_FORMAT_LPCM8;
offs.endOffset = sound->length;
offs.loopingEnabled = AX_VOICE_LOOP_DISABLED;
offs.loopOffset = 0;
offs.currentOffset = 0;
offs.data = sound->samples;
AXSetVoiceOffsets(voice, &offs);
AXVoiceEnd(voice);
sound->voice = voice;
}
}
if (sound->voice != NULL)
{
AXVoiceBegin(sound->voice);
AXSetVoiceLoop(sound->voice, looping ? AX_VOICE_LOOP_ENABLED : AX_VOICE_LOOP_DISABLED);
AXSetVoiceState(sound->voice, AX_VOICE_STATE_PLAYING);
AXVoiceEnd(sound->voice);
}
OSUnlockMutex(&sound_list_mutex);
}
void AudioBackend_StopSound(AudioBackend_Sound *sound)
{
if (sound == NULL)
return;
OSLockMutex(&sound_list_mutex);
if (sound->voice != NULL)
{
AXVoiceBegin(sound->voice);
AXSetVoiceState(sound->voice, AX_VOICE_STATE_STOPPED);
AXVoiceEnd(sound->voice);
}
OSUnlockMutex(&sound_list_mutex);
}
void AudioBackend_RewindSound(AudioBackend_Sound *sound)
{
if (sound == NULL)
return;
OSLockMutex(&sound_list_mutex);
if (sound->voice != NULL)
{
AXVoiceBegin(sound->voice);
AXSetVoiceCurrentOffset(sound->voice, 0);
AXVoiceEnd(sound->voice);
}
OSUnlockMutex(&sound_list_mutex);
}
void AudioBackend_SetSoundFrequency(AudioBackend_Sound *sound, unsigned int frequency)
{
if (sound == NULL)
return;
OSLockMutex(&sound_list_mutex);
sound->frequency = frequency;
if (sound->voice != NULL)
{
AXVoiceBegin(sound->voice);
float srcratio = (float)frequency / (float)AXGetInputSamplesPerSec();
AXSetVoiceSrcRatio(sound->voice, srcratio);
AXVoiceEnd(sound->voice);
}
OSUnlockMutex(&sound_list_mutex);
}
void AudioBackend_SetSoundVolume(AudioBackend_Sound *sound, long volume)
{
if (sound == NULL)
return;
OSLockMutex(&sound_list_mutex);
sound->volume = (unsigned short)(0x8000 * MillibelToScale(volume));
if (sound->voice != NULL)
{
AXVoiceBegin(sound->voice);
AXVoiceVeData vol = {.volume = sound->volume};
AXSetVoiceVe(sound->voice, &vol);
AXVoiceEnd(sound->voice);
}
OSUnlockMutex(&sound_list_mutex);
}
void AudioBackend_SetSoundPan(AudioBackend_Sound *sound, long pan)
{
if (sound == NULL)
return;
OSLockMutex(&sound_list_mutex);
sound->pan_l = (unsigned short)(0x8000 * MillibelToScale(-pan));
sound->pan_r = (unsigned short)(0x8000 * MillibelToScale(pan));
if (sound->voice != NULL)
{
AXVoiceBegin(sound->voice);
AXVoiceDeviceMixData mix_data[6];
memset(mix_data, 0, sizeof(mix_data));
mix_data[0].bus[0].volume = sound->pan_l;
mix_data[1].bus[0].volume = sound->pan_r;
AXSetVoiceDeviceMix(sound->voice, AX_DEVICE_TYPE_DRC, 0, mix_data);
AXSetVoiceDeviceMix(sound->voice, AX_DEVICE_TYPE_TV, 0, mix_data);
AXVoiceEnd(sound->voice);
}
OSUnlockMutex(&sound_list_mutex);
}
void AudioBackend_SetOrganyaCallback(void (*callback)(void))
{
// As far as thread-safety goes - this is guarded by
// `organya_milliseconds`, which is guarded by `organya_mutex`.
organya_callback = callback;
}
void AudioBackend_SetOrganyaTimer(unsigned int milliseconds)
{
OSLockMutex(&organya_mutex);
organya_milliseconds = milliseconds;
OSUnlockMutex(&organya_mutex);
}