mirror of
https://github.com/CTCaer/RetroArch.git
synced 2024-12-14 22:38:34 +00:00
301 lines
8.0 KiB
C
301 lines
8.0 KiB
C
/* RetroArch - A frontend for libretro.
|
|
* Copyright (C) 2010-2013 - Hans-Kristian Arntzen
|
|
* Copyright (C) 2011-2013 - Chris Moeller
|
|
*
|
|
* RetroArch 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 Found-
|
|
* ation, either version 3 of the License, or (at your option) any later version.
|
|
*
|
|
* RetroArch 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 RetroArch.
|
|
* If not, see <http://www.gnu.org/licenses/>.
|
|
*/
|
|
|
|
|
|
#include "driver.h"
|
|
#include "general.h"
|
|
#include "fifo_buffer.h"
|
|
#include <stdlib.h>
|
|
#include "../boolean.h"
|
|
#include <pthread.h>
|
|
|
|
#include <CoreAudio/CoreAudio.h>
|
|
#include <CoreServices/CoreServices.h>
|
|
#include <AudioUnit/AudioUnit.h>
|
|
#include <AudioUnit/AUComponent.h>
|
|
|
|
typedef struct coreaudio
|
|
{
|
|
pthread_mutex_t lock;
|
|
pthread_cond_t cond;
|
|
|
|
ComponentInstance dev;
|
|
bool dev_alive;
|
|
|
|
fifo_buffer_t *buffer;
|
|
bool nonblock;
|
|
size_t buffer_size;
|
|
} coreaudio_t;
|
|
|
|
static void coreaudio_free(void *data)
|
|
{
|
|
coreaudio_t *dev = (coreaudio_t*)data;
|
|
if (!dev)
|
|
return;
|
|
|
|
if (dev->dev_alive)
|
|
{
|
|
AudioOutputUnitStop(dev->dev);
|
|
CloseComponent(dev->dev);
|
|
}
|
|
|
|
if (dev->buffer)
|
|
fifo_free(dev->buffer);
|
|
|
|
pthread_mutex_destroy(&dev->lock);
|
|
pthread_cond_destroy(&dev->cond);
|
|
|
|
free(dev);
|
|
}
|
|
|
|
static OSStatus audio_cb(void *userdata, AudioUnitRenderActionFlags *action_flags,
|
|
const AudioTimeStamp *time_stamp, UInt32 bus_number,
|
|
UInt32 number_frames, AudioBufferList *io_data)
|
|
{
|
|
coreaudio_t *dev = (coreaudio_t*)userdata;
|
|
(void)time_stamp;
|
|
(void)bus_number;
|
|
(void)number_frames;
|
|
|
|
if (!io_data)
|
|
return noErr;
|
|
if (io_data->mNumberBuffers != 1)
|
|
return noErr;
|
|
|
|
unsigned write_avail = io_data->mBuffers[0].mDataByteSize;
|
|
void *outbuf = io_data->mBuffers[0].mData;
|
|
|
|
pthread_mutex_lock(&dev->lock);
|
|
if (fifo_read_avail(dev->buffer) < write_avail)
|
|
{
|
|
*action_flags = kAudioUnitRenderAction_OutputIsSilence;
|
|
memset(outbuf, 0, write_avail); // Seems to be needed.
|
|
pthread_mutex_unlock(&dev->lock);
|
|
pthread_cond_signal(&dev->cond); // Technically possible to deadlock without.
|
|
return noErr;
|
|
}
|
|
|
|
fifo_read(dev->buffer, outbuf, write_avail);
|
|
pthread_mutex_unlock(&dev->lock);
|
|
pthread_cond_signal(&dev->cond);
|
|
return noErr;
|
|
}
|
|
|
|
static void *coreaudio_init(const char *device, unsigned rate, unsigned latency)
|
|
{
|
|
(void)device;
|
|
|
|
coreaudio_t *dev = (coreaudio_t*)calloc(1, sizeof(*dev));
|
|
if (!dev)
|
|
return NULL;
|
|
|
|
CFRunLoopRef run_loop = NULL;
|
|
AudioObjectPropertyAddress addr = {
|
|
kAudioHardwarePropertyRunLoop,
|
|
kAudioObjectPropertyScopeGlobal,
|
|
kAudioObjectPropertyElementMaster
|
|
};
|
|
|
|
pthread_mutex_init(&dev->lock, NULL);
|
|
pthread_cond_init(&dev->cond, NULL);
|
|
AudioObjectSetPropertyData(kAudioObjectSystemObject, &addr, 0, NULL,
|
|
sizeof(CFRunLoopRef), &run_loop);
|
|
|
|
ComponentDescription desc = {0};
|
|
desc.componentType = kAudioUnitType_Output;
|
|
desc.componentSubType = kAudioUnitSubType_HALOutput;
|
|
desc.componentManufacturer = kAudioUnitManufacturer_Apple;
|
|
|
|
AudioStreamBasicDescription stream_desc = {0};
|
|
AudioStreamBasicDescription real_desc;
|
|
AudioChannelLayout layout = {0};
|
|
AURenderCallbackStruct cb = {0};
|
|
|
|
Component comp = NULL;
|
|
OSStatus res = noErr;
|
|
UInt32 i_size = 0;
|
|
size_t fifo_size;
|
|
|
|
comp = FindNextComponent(NULL, &desc);
|
|
if (comp == NULL)
|
|
goto error;
|
|
|
|
res = OpenAComponent(comp, &dev->dev);
|
|
if (res != noErr)
|
|
goto error;
|
|
|
|
dev->dev_alive = true;
|
|
|
|
stream_desc.mSampleRate = rate;
|
|
stream_desc.mBitsPerChannel = sizeof(float) * CHAR_BIT;
|
|
stream_desc.mChannelsPerFrame = 2;
|
|
stream_desc.mBytesPerPacket = 2 * sizeof(float);
|
|
stream_desc.mBytesPerFrame = 2 * sizeof(float);
|
|
stream_desc.mFramesPerPacket = 1;
|
|
stream_desc.mFormatID = kAudioFormatLinearPCM;
|
|
stream_desc.mFormatFlags = kAudioFormatFlagIsFloat | kAudioFormatFlagIsPacked | (is_little_endian() ? 0 : kAudioFormatFlagIsBigEndian);
|
|
|
|
res = AudioUnitSetProperty(dev->dev, kAudioUnitProperty_StreamFormat,
|
|
kAudioUnitScope_Input, 0, &stream_desc, sizeof(stream_desc));
|
|
if (res != noErr)
|
|
goto error;
|
|
|
|
i_size = sizeof(real_desc);
|
|
res = AudioUnitGetProperty(dev->dev, kAudioUnitProperty_StreamFormat, kAudioUnitScope_Input, 0, &real_desc, &i_size);
|
|
if (res != noErr)
|
|
goto error;
|
|
|
|
RARCH_LOG("[CoreAudio]: Using output sample rate of %.1f Hz\n", (float)real_desc.mSampleRate);
|
|
g_settings.audio.out_rate = real_desc.mSampleRate;
|
|
|
|
if (real_desc.mChannelsPerFrame != stream_desc.mChannelsPerFrame)
|
|
goto error;
|
|
if (real_desc.mBitsPerChannel != stream_desc.mBitsPerChannel)
|
|
goto error;
|
|
if (real_desc.mFormatFlags != stream_desc.mFormatFlags)
|
|
goto error;
|
|
if (real_desc.mFormatID != stream_desc.mFormatID)
|
|
goto error;
|
|
|
|
layout.mChannelLayoutTag = kAudioChannelLayoutTag_UseChannelBitmap;
|
|
layout.mChannelBitmap = 0x03;
|
|
|
|
res = AudioUnitSetProperty(dev->dev, kAudioUnitProperty_AudioChannelLayout,
|
|
kAudioUnitScope_Input, 0, &layout, sizeof(layout));
|
|
if (res != noErr)
|
|
goto error;
|
|
|
|
cb.inputProc = audio_cb;
|
|
cb.inputProcRefCon = dev;
|
|
|
|
res = AudioUnitSetProperty(dev->dev, kAudioUnitProperty_SetRenderCallback,
|
|
kAudioUnitScope_Input, 0, &cb, sizeof(cb));
|
|
if (res != noErr)
|
|
goto error;
|
|
|
|
res = AudioUnitInitialize(dev->dev);
|
|
if (res != noErr)
|
|
goto error;
|
|
|
|
fifo_size = (latency * g_settings.audio.out_rate) / 1000;
|
|
fifo_size *= 2 * sizeof(float);
|
|
dev->buffer_size = fifo_size;
|
|
|
|
dev->buffer = fifo_new(fifo_size);
|
|
if (!dev->buffer)
|
|
goto error;
|
|
|
|
RARCH_LOG("[CoreAudio]: Using buffer size of %u bytes: (latency = %u ms)\n", (unsigned)fifo_size, latency);
|
|
|
|
res = AudioOutputUnitStart(dev->dev);
|
|
if (res != noErr)
|
|
goto error;
|
|
|
|
return dev;
|
|
|
|
error:
|
|
RARCH_ERR("[CoreAudio]: Failed to initialize driver ...\n");
|
|
coreaudio_free(dev);
|
|
return NULL;
|
|
}
|
|
|
|
static ssize_t coreaudio_write(void *data, const void *buf_, size_t size)
|
|
{
|
|
coreaudio_t *dev = (coreaudio_t*)data;
|
|
|
|
const uint8_t *buf = (const uint8_t*)buf_;
|
|
size_t written = 0;
|
|
|
|
while (size > 0)
|
|
{
|
|
pthread_mutex_lock(&dev->lock);
|
|
|
|
size_t write_avail = fifo_write_avail(dev->buffer);
|
|
if (write_avail > size)
|
|
write_avail = size;
|
|
|
|
fifo_write(dev->buffer, buf, write_avail);
|
|
buf += write_avail;
|
|
written += write_avail;
|
|
size -= write_avail;
|
|
|
|
if (dev->nonblock)
|
|
{
|
|
pthread_mutex_unlock(&dev->lock);
|
|
break;
|
|
}
|
|
|
|
if (write_avail == 0)
|
|
pthread_cond_wait(&dev->cond, &dev->lock);
|
|
pthread_mutex_unlock(&dev->lock);
|
|
}
|
|
|
|
return written;
|
|
}
|
|
|
|
static bool coreaudio_stop(void *data)
|
|
{
|
|
coreaudio_t *dev = (coreaudio_t*)data;
|
|
return AudioOutputUnitStop(dev->dev) == noErr;
|
|
}
|
|
|
|
static void coreaudio_set_nonblock_state(void *data, bool state)
|
|
{
|
|
coreaudio_t *dev = (coreaudio_t*)data;
|
|
dev->nonblock = state;
|
|
}
|
|
|
|
static bool coreaudio_start(void *data)
|
|
{
|
|
coreaudio_t *dev = (coreaudio_t*)data;
|
|
return AudioOutputUnitStart(dev->dev) == noErr;
|
|
}
|
|
|
|
static bool coreaudio_use_float(void *data)
|
|
{
|
|
(void)data;
|
|
return true;
|
|
}
|
|
|
|
static size_t coreaudio_write_avail(void *data)
|
|
{
|
|
coreaudio_t *dev = (coreaudio_t*)data;
|
|
pthread_mutex_lock(&dev->lock);
|
|
size_t avail = fifo_write_avail(dev->buffer);
|
|
pthread_mutex_unlock(&dev->lock);
|
|
return avail;
|
|
}
|
|
|
|
static size_t coreaudio_buffer_size(void *data)
|
|
{
|
|
coreaudio_t *dev = (coreaudio_t*)data;
|
|
return dev->buffer_size;
|
|
}
|
|
|
|
const audio_driver_t audio_coreaudio = {
|
|
coreaudio_init,
|
|
coreaudio_write,
|
|
coreaudio_stop,
|
|
coreaudio_start,
|
|
coreaudio_set_nonblock_state,
|
|
coreaudio_free,
|
|
coreaudio_use_float,
|
|
"coreaudio",
|
|
coreaudio_write_avail,
|
|
coreaudio_buffer_size,
|
|
};
|
|
|