[alsa-devel] Unable to open CAPTURE device

[Irfan Shaikh]

Hello,

         I have connected ipod to my hardware (using USB) and i want to read the audio pcm data from ipod. I am running following section of code to detect connection of ipod. But i am not finding any capture device connected.
        Am i giving some wrong name of capture device ? If wrong how can i find correct name of Audio Capture device.

/***********************************************************************************************************************************************/
const char *capture_device="plughw:1,0";

while((retVal = snd_pcm_open( &pcm_capture, (const char *)capture_device, SND_PCM_STREAM_CAPTURE, 1))!=0)
{
  if (retVal != 0){
    printf("Opening Capture device FAILED\n");
    printf("Still waiting for Capture device to be connected\n");
    usleep(5000);
  }
}
/***********************************************************************************************************************************************/
OUTPUT :

Opening Capture device FAILED
Still waiting for Capture device to be connected
ALSA lib pcm_hw.c:1433:(_snd_pcm_hw_open) Invalid value for card
Opening Capture device FAILED
Still waiting for Capture device to be connected
ALSA lib pcm_hw.c:1433:(_snd_pcm_hw_open) Invalid value for card
Opening Capture device FAILED
Still waiting for Capture device to be connected
ALSA lib pcm_hw.c:1433:(_snd_pcm_hw_open) Invalid value for card
Opening Capture device FAILED
Still waiting for Capture device to be connected
ALSA lib pcm_hw.c:1433:(_snd_pcm_hw_open) Invalid value for card
Opening Capture device FAILED
Still waiting for Capture device to be connected
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Regards


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