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/**
* @file sess.c AudioUnit sound driver - session
*
* Copyright (C) 2010 Creytiv.com
*/
#include <AudioUnit/AudioUnit.h>
#include <AudioToolbox/AudioToolbox.h>
#include <re.h>
#include <baresip.h>
#include "audiounit.h"
struct audiosess {
struct list sessl;
};
struct audiosess_st {
struct audiosess *as;
struct le le;
audiosess_int_h *inth;
void *arg;
};
static struct audiosess *gas;
#if TARGET_OS_IPHONE
static void propListener(void *inClientData, AudioSessionPropertyID inID,
UInt32 inDataSize, const void *inData)
{
struct audiosess *sess = inClientData;
CFDictionaryRef dref = inData;
CFNumberRef nref;
SInt32 reason = 0;
(void)inDataSize;
(void)sess;
if (kAudioSessionProperty_AudioRouteChange != inID)
return;
nref = CFDictionaryGetValue(
dref,
CFSTR(kAudioSession_AudioRouteChangeKey_Reason)
);
CFNumberGetValue(nref, kCFNumberSInt32Type, &reason);
info("audiounit: AudioRouteChange - reason %d\n", reason);
}
#endif
static void sess_destructor(void *arg)
{
struct audiosess_st *st = arg;
list_unlink(&st->le);
mem_deref(st->as);
}
static void destructor(void *arg)
{
struct audiosess *as = arg;
#if TARGET_OS_IPHONE
AudioSessionPropertyID id = kAudioSessionProperty_AudioRouteChange;
AudioSessionRemovePropertyListenerWithUserData(id, propListener, as);
AudioSessionSetActive(false);
#endif
list_flush(&as->sessl);
gas = NULL;
}
int audiosess_alloc(struct audiosess_st **stp,
audiosess_int_h *inth, void *arg)
{
struct audiosess_st *st = NULL;
struct audiosess *as = NULL;
int err = 0;
bool created = false;
#if TARGET_OS_IPHONE
AudioSessionPropertyID id = kAudioSessionProperty_AudioRouteChange;
UInt32 category;
OSStatus ret;
#endif
if (!stp)
return EINVAL;
#if TARGET_OS_IPHONE
/* Must be done for all modules */
category = kAudioSessionCategory_PlayAndRecord;
ret = AudioSessionSetProperty(kAudioSessionProperty_AudioCategory,
sizeof(category), &category);
if (ret) {
warning("audiounit: Audio Category: %d\n", ret);
return EINVAL;
}
#endif
if (gas)
goto makesess;
as = mem_zalloc(sizeof(*as), destructor);
if (!as)
return ENOMEM;
#if TARGET_OS_IPHONE
ret = AudioSessionSetActive(true);
if (ret) {
warning("audiounit: AudioSessionSetActive: %d\n", ret);
err = ENOSYS;
goto out;
}
ret = AudioSessionAddPropertyListener(id, propListener, as);
if (ret) {
warning("audiounit: AudioSessionAddPropertyListener: %d\n",
ret);
err = EINVAL;
goto out;
}
#endif
gas = as;
created = true;
makesess:
st = mem_zalloc(sizeof(*st), sess_destructor);
if (!st) {
err = ENOMEM;
goto out;
}
st->inth = inth;
st->arg = arg;
st->as = created ? gas : mem_ref(gas);
list_append(&gas->sessl, &st->le, st);
out:
if (err) {
mem_deref(as);
mem_deref(st);
}
else {
*stp = st;
}
return err;
}
void audiosess_interrupt(bool start)
{
struct le *le;
if (!gas)
return;
for (le = gas->sessl.head; le; le = le->next) {
struct audiosess_st *st = le->data;
if (st->inth)
st->inth(start, st->arg);
}
}
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