audio_output_coreaudio.c File Reference

Apple CoreAudio audio output driver. More...

#include "stdinc.h"
#include <CoreAudio/AudioHardware.h>
#include "audio_file.h"
#include "audio_output.h"
#include "gui.h"

Include dependency graph for audio_output_coreaudio.c:

Go to the source code of this file.

Functions
static OSStatus	audio_output_ioproc (AudioDeviceID inDevice, const AudioTimeStamp *inNow, const AudioBufferList *inInputData, const AudioTimeStamp *inInputTime, AudioBufferList *outOutputData, const AudioTimeStamp *inOutputTime, void *inClientData)
	Pull-function needed by CoreAudio to copy data to the audio buffers.
int	audio_output_open (void)
	Open the sound device for audio output.
int	audio_output_play (struct audio_file *fd)
	Write data to the sound device.
void	audio_output_close (void)
	Close the sound device.
static int	audio_output_volume_adjust (Float32 n)
	Adjust the audio output by a certain ratio and return the new value.
int	audio_output_volume_up (void)
	Increment the volume and return the new value in percent.
int	audio_output_volume_down (void)
	Decrement the volume and return the new value in percent.
Variables
AudioDeviceID	adid
	The audio device ID obtained from CoreAudio.
AudioStreamBasicDescription	afmt
	The stream format used by the CoreAudio device.
AudioDeviceIOProcID	aprocid
	The IO-process ID.
int16_t *	abufnew
	The buffer that will be played when the current buffer is finished processing.
int16_t *	abufcur
	The buffer that is currently processed by CoreAudio.
int	abuflen
	The length of the buffers used by CoreAudio.
int	abufulen = 0
	The length of the abufcur that is currently used. It should only be used with g_atomic_* operations.
GMutex *	abuflock
	A not really used mutex that is used for the conditional variable.
GCond *	abufdrained
	The conditional variable that is used to inform the application that a buffer has been processed.
UInt32	achans [2] = { 0, 0 }
	Preferred audio channels used for audio playback. We use it to set the volume.

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Detailed Description

Apple CoreAudio audio output driver.

Definition in file audio_output_coreaudio.c.