ios: ijksdl: AudioUnit: do not block pause

ios/IJKMediaPlayer/IJKMediaPlayer/ijkmedia/ijksdl/ios/IJKSDLAudioUnitController.h

@@ -37,6 +37,5 @@
 - (void)close;
 
 @property (nonatomic, readonly) SDL_AudioSpec spec;
-@property (nonatomic, getter=isPaused) BOOL paused;
 
 @end

ios/IJKMediaPlayer/IJKMediaPlayer/ijkmedia/ijksdl/ios/IJKSDLAudioUnitController.m

@@ -27,6 +27,7 @@
 
 @implementation IJKSDLAudioUnitController {
     AudioUnit _auUnit;
+    BOOL _isPaused;
 }
 
 - (id)initWithAudioSpec:(SDL_AudioSpec *)aSpec
@@ -173,6 +174,7 @@
     if (!_auUnit)
         return;
 
+    _isPaused = NO;
     AudioOutputUnitStart(_auUnit);
     AudioSessionSetActive(true);
 }
@@ -182,8 +184,7 @@
     if (!_auUnit)
         return;
 
-    AudioOutputUnitStop(_auUnit);
-    // AudioSessionSetActive(false);
+    _isPaused = YES;
 }
 
 - (void)flush
@@ -191,7 +192,7 @@
     if (!_auUnit)
         return;
 
-    AudioOutputUnitStop(_auUnit);
+    AudioUnitReset(_auUnit, kAudioUnitScope_Global, 0);
 }
 
 - (void)stop
@@ -234,7 +235,7 @@ static OSStatus RenderCallback(void                        *inRefCon,
     @autoreleasepool {
         IJKSDLAudioUnitController* auController = (__bridge IJKSDLAudioUnitController *) inRefCon;
 
-        if (!auController || auController.paused) {
+        if (!auController || auController->_isPaused) {
             for (UInt32 i = 0; i < ioData->mNumberBuffers; i++) {
                 AudioBuffer *ioBuffer = &ioData->mBuffers[i];
                 memset(ioBuffer->mData, auController.spec.silence, ioBuffer->mDataByteSize);
@@ -242,11 +243,11 @@ static OSStatus RenderCallback(void                        *inRefCon,
             return noErr;
         }
 
-        for (UInt32 i = 0; i < ioData->mNumberBuffers; i++) {
+        for (int i = 0; i < (int)ioData->mNumberBuffers; i++) {
             AudioBuffer *ioBuffer = &ioData->mBuffers[i];
             (*auController.spec.callback)(auController.spec.userdata, ioBuffer->mData, ioBuffer->mDataByteSize);
         }
-        
+
         return noErr;
     }
 }

ios/IJKMediaPlayer/IJKMediaPlayer/ijkmedia/ijksdl/ios/ijksdl_aout_ios_audiounit.m

@@ -53,7 +53,7 @@ int aout_open_audio(SDL_Aout *aout, SDL_AudioSpec *desired, SDL_AudioSpec *obtai
 
 void aout_pause_audio(SDL_Aout *aout, int pause_on)
 {
-    SDLTRACE("aout_pause_audio()\n");
+    SDLTRACE("aout_pause_audio(%d)\n", pause_on);
     SDL_Aout_Opaque *opaque = aout->opaque;
 
     if (pause_on) {