TAAE2 - Audiobus is not working on iPhone

Comments

• Michael

  August 2016

  Can you share the code you put into the sample app, @pratik?
• pratik

  August 2016 edited August 2016

  Please check the code :

  // audiobus code
      self.audiobusController = [[ABAudiobusController alloc] initWithApiKey:ABKey];
  
      // Create sender port, to send audio
      ABSenderPort *sender = [[ABSenderPort alloc] initWithName:@"xmeinc:Sender"
                                                 title:@"sender"
                             audioComponentDescription:(AudioComponentDescription) {
                                 .componentType = kAudioUnitType_RemoteGenerator,
                                 .componentSubType = 'bnks',
                                 .componentManufacturer = 'xmei' }];
      [_audiobusController addSenderPort:sender];
  
      //control the play/stop trigger during audiobus
      self.playTrigger = [ABTrigger triggerWithSystemType:ABTriggerTypePlayToggle
                                                    block:^(ABTrigger *trigger, NSSet *ports) {
                                                         [self togglePlay];
                                                    }];
  
      [_audiobusController addTrigger:self.playTrigger];
  
  // render block
   renderer.block = ^(const AERenderContext * _Nonnull context) {
  
          __unsafe_unretained AEMixerModule * aggregator
          = (__bridge AEMixerModule *)AEManagedValueGetValue(sampleValue);
  
          // Run varispeed unit, which will run its own render loop, above
          AEModuleProcess(aggregator, context);
          AERenderContextOutput(context, 1);
  
  
          if ( ABSenderPortIsConnected(sender) )
              ABSenderPortSend(sender, context->output, context->frames, context->timestamp);
  
          // Now mute, if appropriate
          if ( ABSenderPortIsMuted(sender) ) {
              // If we should be muted, then mute
              for ( int i=0; i<context->output->mNumberBuffers; i++ ) {
                 memset(context->output->mBuffers[i].mData, 0, context->output->mBuffers[i].mDataByteSize);
              }
          }
  
      };
  

  Code is working smoothly on iPad but not on iPhone.

  Please help friend.
• Michael

  August 2016 edited August 2016

  Ah, you're not setting the clientFormat property.

  sender.clientFormat = AEAudioDescription;
  

  But is there any reason you're using ABSenderPortSend directly? You should, if at all possible, just pass in the output audio unit.

  Check out the Audiobus documentation for details and further info (I highly recommend reading the integration guide at the very least).
• pratik

  August 2016 edited August 2016

  Well I already tried that and also read full documentation before.

  and again just updated code but it's not working.

   // output unit
      self.output = [[AEAudioUnitOutput alloc] initWithRenderer:renderer];
  
      // audiobus code
      self.audiobusController = [[ABAudiobusController alloc] initWithApiKey:ABKey];
  
      // Create sender port, to send audio
      ABSenderPort *sender = [[ABSenderPort alloc] initWithName:@"xmeinc:Sender"
                                                 title:@"sender"
                             audioComponentDescription:(AudioComponentDescription) {
                                 .componentType = kAudioUnitType_RemoteGenerator,
                                 .componentSubType = 'bnks',
                                 .componentManufacturer = 'xmei' } audioUnit:self.output.audioUnit];
  
      sender.clientFormat = AEAudioDescription;
  
      [_audiobusController addSenderPort:sender];
  

  strange thing is it's only working on iPad.

  I also tried following 2 things alternatively but same behavior.

  // output unit
      self.output = [[AEAudioUnitOutput alloc] initWithRenderer:renderer];
  
      // audiobus code
      self.audiobusController = [[ABAudiobusController alloc] initWithApiKey:ABKey];
  
      // Create sender port, to send audio
      ABSenderPort *sender = [[ABSenderPort alloc] initWithName:@"xmeinc:Sender"
                                                 title:@"sender"
                             audioComponentDescription:(AudioComponentDescription) {
                                 .componentType = kAudioUnitType_RemoteGenerator,
                                 .componentSubType = 'bnks',
                                 .componentManufacturer = 'xmei' }];
  
      sender.clientFormat = AEAudioDescription;
  
      [_audiobusController addSenderPort:sender];
  

  and

  // output unit
      self.output = [[AEAudioUnitOutput alloc] initWithRenderer:renderer];
  
      // audiobus code
      self.audiobusController = [[ABAudiobusController alloc] initWithApiKey:ABKey];
  
      // Create sender port, to send audio
      ABSenderPort *sender = [[ABSenderPort alloc] initWithName:@"xmeinc:Sender"
                                                 title:@"sender"
                             audioComponentDescription:(AudioComponentDescription) {
                                 .componentType = kAudioUnitType_RemoteGenerator,
                                 .componentSubType = 'bnks',
                                 .componentManufacturer = 'xmei' } audioUnit:self.output.audioUnit];
  
      [_audiobusController addSenderPort:sender];
  
• Michael

  August 2016

  Ah, I think I know what's happening - the output unit needs to be setup before you fetch its audio unit, so you're effectively passing NULL as the audio unit to ABSenderPort. I've just added some commits to the repository which will automatically set up the audio unit if you try to fetch it before it's setup. Grab those and try again - or just add:

  [self.output setup:NULL];
  

  before your ABSenderPort initialisation.

  I just tried it on my iPhone 6S Plus and that's working.
• pratik

  August 2016

  Thanks for reply friend.

  It is working on iPhone now but it seems to be little distorted when record and playback in receiver app. it is loud and distorted.

  again no issue in iPad but just issue with iPhone.
• pratik

  August 2016

  Here is my new code :

  // output unit
      self.output = [[AEAudioUnitOutput alloc] initWithRenderer:renderer];
  
      [self.output setup:NULL];
  
      // audiobus code
      self.audiobusController = [[ABAudiobusController alloc] initWithApiKey:ABKey];
  
      // Create sender port, to send audio
      ABSenderPort *sender = [[ABSenderPort alloc] initWithName:@"xmeinc:Sender"
                                                 title:@"sender"
                             audioComponentDescription:(AudioComponentDescription) {
                                 .componentType = kAudioUnitType_RemoteGenerator,
                                 .componentSubType = 'bnks',
                                 .componentManufacturer = 'xmei' } audioUnit:self.output.audioUnit];
  
      [_audiobusController addSenderPort:sender];
  
   renderer.block = ^(const AERenderContext * _Nonnull context) {
  
          __unsafe_unretained AEMixerModule * aggregator
          = (__bridge AEMixerModule *)AEManagedValueGetValue(sampleValue);
  
          // Run varispeed unit, which will run its own render loop, above
          AEModuleProcess(aggregator, context);
          AERenderContextOutput(context, 1);        
      };
  
• Michael

  August 2016

  What happens if you put this code in the TAAE sample app? I integrated Audiobus there to check, and it's working well