Home/ Questions/Q 8783403
In Process

The Archive Base Latest Questions

Editorial Team
  • 0
Asked: 2026-06-13T20:49:28+00:00

OSStatus status; /******** Number of input channels ***************/ UInt32 inputchannels; UInt32 sizeofdata= sizeof(inputchannels); //problematic:

  • 0
OSStatus status;
/******** Number of input channels ***************/
UInt32 inputchannels; 
UInt32 sizeofdata= sizeof(inputchannels); 
//problematic: gives number of potential inputs, not number actually connected
status= AudioSessionGetProperty(kAudioSessionProperty_CurrentHardwareInputNumberChannels,&sizeofdata,&inputchannels);
[self checkStatus:status]; //prints statement 1 if OSStatus !=0
NSLog(@"Inputs %d \n",inputchannels); //prints statement 2

Above code results in OSStatus 560161140 (statement 1)….. and Inputs 0 (statement 2).

Any one please help me to know why i am getting this error status, what can it cause and how to prevent it……..

Share

Leave an answer

You must login to add an answer.

Need An Account,

1 Answer

  1. Editorial Team

    According to the Result Codes section of the Audio Session Services Reference:

    560161140 == 0x21636174 == "!cat"

    Which means:

    The specified audio session category cannot be used for the attempted
    audio operation. For example, you attempted to play or record audio
    with the audio session category set to
    kAudioSessionCategory_AudioProcessing. Available in iOS 3.1 and later.

    I can help you interpret the result but I cannot tell you the root cause.

    • 0