Recording option for sound processed from augraph

[blackspear]

Hi All

Iam working on a audio mixer project by merging the features of "SpeakHere" and "iPhoneMultichannelMixerTest" sample codes.

Iam able to record audio from the mic but infact Iam trying out to record the sound processed from augraph.

The issue Iam facing is that when the sound from augraph is being played and I click the record button, the sound processed from augraph mutes or stops and audio from my mic gets recorded.

Please support me in figuring out the solution.

Thanks in Advance

------------------------------------
- (void)startRecording
{
[self setupAudioFormat:&recordState.dataFormat];
NSLog(@"-----------------");
recordState.currentPacket = 0;

OSStatus status;
status = AudioQueueNewInput(&recordState.dataFormat,
AudioInputCallback,
&recordState,
CFRunLoopGetCurrent(),
kCFRunLoopCommonModes,
0,
&recordState.queue);

if(status == 0)
{
for(int i = 0; i < NUM_BUFFERS; i++)
{
//appDelegate=[[UIApplication sharedApplication] delegate];
AudioQueueAllocateBuffer(recordState.queue,
16000, &recordState.buffers[i]);
AudioQueueEnqueueBuffer(recordState.queue,
recordState.buffers[i], 0, NULL);
}

status = AudioFileCreateWithURL(fileURL,
kAudioFileAIFFType,
&recordState.dataFormat,
kAudioFileFlags_EraseFile,
&recordState.audioFile);


if(status == 0)
{
recordState.recording = true;
status = AudioQueueStart(recordState.queue, NULL);
if(status == 0)
{
// labelStatus.text = @"Recording";
NSLog(@"Recording");
}
}
}

if(status != 0)
{
[self stopRecording];
// labelStatus.text = @"Record Failed";
NSLog(@"Record Failed");
}
}


- (void)setupAudioFormatAudioStreamBasicDescriptio n*)format
{
format->mSampleRate = 8000.0;
format->mFormatID = kAudioFormatLinearPCM;
format->mFramesPerPacket = 1;
format->mChannelsPerFrame = 1;
format->mBytesPerFrame = 2;
format->mBytesPerPacket = 2;
format->mBitsPerChannel = 16;
format->mReserved = 0;
format->mFormatFlags = kLinearPCMFormatFlagIsBigEndian |
kLinearPCMFormatFlagIsSignedInteger |
kLinearPCMFormatFlagIsPacked;
}


void AudioInputCallback(
void *inUserData,
AudioQueueRef inAQ,
AudioQueueBufferRef inBuffer,
const AudioTimeStamp *inStartTime,
UInt32 inNumberPacketDescriptions,
const AudioStreamPacketDescription *inPacketDescs)
{
RecordState* recordState = (RecordState*)inUserData;
if(!recordState->recording)
{
printf("Not recording, returning\n");
}

//if(inNumberPacketDescriptions == 0 && recordState->dataFormat.mBytesPerPacket != 0)
//{
// inNumberPacketDescriptions = inBuffer->mAudioDataByteSize / recordState->dataFormat.mBytesPerPacket;
//}

printf("Writing buffer %d\n", recordState->currentPacket);
OSStatus status = AudioFileWritePackets(recordState->audioFile,
false,
inBuffer->mAudioDataByteSize,
inPacketDescs,
recordState->currentPacket,
&inNumberPacketDescriptions,
inBuffer->mAudioData);
if(status == 0)
{
recordState->currentPacket += inNumberPacketDescriptions;
}

AudioQueueEnqueueBuffer(recordState->queue, inBuffer, 0, NULL);
}

[blackspear]

Hi

Iam still looking at least for a hint on how to solve the issue..

Basically, I have the audio running out of iphone speakers from augraph and i just need to record what is being played live from the speakers. That is fine enough for me.

Please provide some support

Thanks..

[pratikgoswami]

Hi

Iam still looking at least for a hint on how to solve the issue..

Basically, I have the audio running out of iphone speakers from augraph and i just need to record what is being played live from the speakers. That is fine enough for me.

Please provide some support

Thanks..

Hi BlackSpear,

I am looking for the same solution. In my case I want to write buffers from Live Audio Stream to a audio file.

Any help would be appreciated.

Many thanks

Pratik

[mahmudmcc]

Originally Posted by pratikgoswami

Hi BlackSpear,

I am looking for the same solution. In my case I want to write buffers from Live Audio Stream to a audio file.

Any help would be appreciated.

Many thanks

Pratik

I'm looking for the same solution.