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/**
* @file coreaudio.c Apple Coreaudio sound driver
*
* Copyright (C) 2010 Creytiv.com
*/
#include <AudioToolbox/AudioToolbox.h>
#include <re.h>
#include <rem.h>
#include <baresip.h>
#include "coreaudio.h"
static struct auplay *auplay;
static struct ausrc *ausrc;
int audio_fmt(enum aufmt fmt)
{
switch (fmt) {
case AUFMT_S16LE: return kAudioFormatLinearPCM;
case AUFMT_PCMA: return kAudioFormatALaw;
case AUFMT_PCMU: return kAudioFormatULaw;
default:
warning("coreaudio: unknown format %d\n", fmt);
return -1;
}
}
int bytesps(enum aufmt fmt)
{
switch (fmt) {
case AUFMT_S16LE: return 2;
case AUFMT_PCMA: return 1;
case AUFMT_PCMU: return 1;
default: return 0;
}
}
#if TARGET_OS_IPHONE && __IPHONE_OS_VERSION_MIN_REQUIRED >= __IPHONE_2_0
static void interruptionListener(void *data, UInt32 inInterruptionState)
{
(void)data;
/* TODO: implement this properly */
if (inInterruptionState == kAudioSessionBeginInterruption) {
debug("coreaudio: player interrupt: Begin\n");
}
else if (inInterruptionState == kAudioSessionEndInterruption) {
debug("coreaudio: player interrupt: End\n");
}
}
int audio_session_enable(void)
{
OSStatus res;
UInt32 category;
res = AudioSessionInitialize(NULL, NULL, interruptionListener, 0);
if (res && res != 1768843636)
return ENODEV;
category = kAudioSessionCategory_PlayAndRecord;
res = AudioSessionSetProperty(kAudioSessionProperty_AudioCategory,
sizeof(category), &category);
if (res) {
warning("coreaudio: Audio Category: %d\n", res);
return ENODEV;
}
res = AudioSessionSetActive(true);
if (res) {
warning("coreaudio: AudioSessionSetActive: %d\n", res);
return ENODEV;
}
return 0;
}
void audio_session_disable(void)
{
AudioSessionSetActive(false);
}
#else
int audio_session_enable(void)
{
return 0;
}
void audio_session_disable(void)
{
}
#endif
static int module_init(void)
{
int err;
err = auplay_register(&auplay, "coreaudio", coreaudio_player_alloc);
err |= ausrc_register(&ausrc, "coreaudio", coreaudio_recorder_alloc);
return err;
}
static int module_close(void)
{
auplay = mem_deref(auplay);
ausrc = mem_deref(ausrc);
return 0;
}
EXPORT_SYM const struct mod_export DECL_EXPORTS(coreaudio) = {
"coreaudio",
"audio",
module_init,
module_close,
};
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