我正在尝试使用Novocaine以高性能播放一些音频,但我发现的示例代码仅在耳机中播放音频,但我希望它能在扬声器上播放...这可能吗?< / p>
感谢
答案 0 :(得分:5)
我已经实现了这样的路线改变,似乎有效。只需使用下面的代码替换sessionPropertyListener
,然后添加updateAudioRoute
。
void sessionPropertyListener(void * inClientData,
AudioSessionPropertyID inID,
UInt32 inDataSize,
const void * inData){
if (inID == kAudioSessionProperty_AudioRouteChange)
{
Novocaine *sm = (Novocaine *)inClientData;
[sm checkSessionProperties];
[sm updateAudioRoute];
}
}
//Quick and dirty way to override the audioRoute whenever the audioRoute is changed.
- (void)updateAudioRoute {
CFStringRef newRoute;
UInt32 size = sizeof(CFStringRef);
CheckError(AudioSessionGetProperty(kAudioSessionProperty_AudioRoute, &size, &newRoute),
"couldn't get new audio route");
if (newRoute)
{
CFShow(newRoute);
if (CFStringCompare(newRoute, CFSTR("ReceiverAndMicrophone"), (UInt32)NULL)== kCFCompareEqualTo)
{
UInt32 audioRouteOverride = kAudioSessionOverrideAudioRoute_Speaker;
AudioSessionSetProperty (kAudioSessionProperty_OverrideAudioRoute,sizeof (audioRouteOverride),&audioRouteOverride);
}
else if (CFStringCompare(newRoute, CFSTR("HeadsetInOut"), (UInt32)NULL) == kCFCompareEqualTo)
{
UInt32 audioRouteOverride = kAudioSessionOverrideAudioRoute_None;
AudioSessionSetProperty (kAudioSessionProperty_OverrideAudioRoute,sizeof (audioRouteOverride),&audioRouteOverride);
}
}
}
答案 1 :(得分:3)
几乎有同样的问题。 快速而肮脏的修复,添加:
UInt32 audioRouteOverride = kAudioSessionOverrideAudioRoute_Speaker;
AudioSessionSetProperty (kAudioSessionProperty_OverrideAudioRoute,sizeof (audioRouteOverride),&audioRouteOverride);
到你的Novocaine.m中的 - (void)setupAudio的iOS部分的结尾 请注意,即使插入了耳机,这也会通过扬声器播放音频!
在我看来,路由更改尚未实现,因为 - (void)selectAudioDevice为空。