User Profile

I am using the following code to access the audio buffer.But after i read all the packets in the audio buffer queue i dont need the old enqueued buffer on the queue. Is there a way to free those buffer while the audio is still recording?#import "RNAudioRecord.h" @implementation RNAudioRecord RCT_EXPORT_MODULE(); RCT_EXPORT_METHOD(init:(NSDictionary *) options) { RCTLogInfo(@"init"); _recordState.mDataFormat.mSampleRate = options[@"sampleRate"] == nil ? 44100 : [options[@"sampleRate"] doubleValue]; _recordState.mDataFormat.mBitsPerChannel = options[@"bitsPerSample"] == nil ? 16 : [options[@"bitsPerSample"] unsignedIntValue]; _recordState.mDataFormat.mChannelsPerFrame = options[@"channels"] == nil ? 1 : [options[@"channels"] unsignedIntValue]; _recordState.mDataFormat.mBytesPerPacket = (_recordState.mDataFormat.mBitsPerChannel / 8) * _recordState.mDataFormat.mChannelsPerFrame; _recordState.mDataFormat.mBytesPerFrame = _recordState.mDataFormat.mBytesPerPacket; _recordState.mDataFormat.mFramesPerPacket = 1; _recordState.mDataFormat.mReserved = 0; _recordState.mDataFormat.mFormatID = kAudioFormatLinearPCM; _recordState.mDataFormat.mFormatFlags = _recordState.mDataFormat.mBitsPerChannel == 8 ? kLinearPCMFormatFlagIsPacked : (kLinearPCMFormatFlagIsSignedInteger | kLinearPCMFormatFlagIsPacked); _recordState.bufferByteSize = 2048; _recordState.mSelf = self; NSString *fileName = options[@"wavFile"] == nil ? @"audio.wav" : options[@"wavFile"]; NSString *docDir = [NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES) firstObject]; _filePath = [NSString stringWithFormat:@"%@/%@", docDir, fileName]; } RCT_EXPORT_METHOD(start) { RCTLogInfo(@"start"); // most audio players set session category to "Playback", record won't work in this mode // therefore set session category to "Record" before recording [[AVAudioSession sharedInstance] setCategory:AVAudioSessionCategoryRecord error:nil]; _recordState.mIsRunning = true; _recordState.mCurrentPacket = 0; CFURLRef url = CFURLCreateWithString(kCFAllocatorDefault, (CFStringRef)_filePath, NULL); AudioFileCreateWithURL(url, kAudioFileWAVEType, &_recordState.mDataFormat, kAudioFileFlags_EraseFile, &_recordState.mAudioFile); CFRelease(url); AudioQueueNewInput(&_recordState.mDataFormat, HandleInputBuffer, &_recordState, NULL, NULL, 0, &_recordState.mQueue); for (int i = 0; i < kNumberBuffers; i++) { AudioQueueAllocateBuffer(_recordState.mQueue, _recordState.bufferByteSize, &_recordState.mBuffers[i]); AudioQueueEnqueueBuffer(_recordState.mQueue, _recordState.mBuffers[i], 0, NULL); } AudioQueueStart(_recordState.mQueue, NULL); } RCT_EXPORT_METHOD(stop:(RCTPromiseResolveBlock)resolve rejecter:(__unused RCTPromiseRejectBlock)reject) { RCTLogInfo(@"stop"); if (_recordState.mIsRunning) { _recordState.mIsRunning = false; AudioQueueStop(_recordState.mQueue, true); AudioQueueDispose(_recordState.mQueue, true); AudioFileClose(_recordState.mAudioFile); } resolve(_filePath); unsigned long long fileSize = [[[NSFileManager defaultManager] attributesOfItemAtPath:_filePath error:nil] fileSize]; RCTLogInfo(@"file path %@", _filePath); RCTLogInfo(@"file size %llu", fileSize); } void HandleInputBuffer(void *inUserData, AudioQueueRef inAQ, AudioQueueBufferRef inBuffer, const AudioTimeStamp *inStartTime, UInt32 inNumPackets, const AudioStreamPacketDescription *inPacketDesc) { AQRecordState* pRecordState = (AQRecordState *)inUserData; if (!pRecordState->mIsRunning) { return; } if (AudioFileWritePackets(pRecordState->mAudioFile, false, inBuffer->mAudioDataByteSize, inPacketDesc, pRecordState->mCurrentPacket, &inNumPackets, inBuffer->mAudioData ) == noErr) { pRecordState->mCurrentPacket += inNumPackets; } short *samples = (short *) inBuffer->mAudioData; long nsamples = inBuffer->mAudioDataByteSize; NSData *data = [NSData dataWithBytes:samples length:nsamples]; NSString *str = [data base64EncodedStringWithOptions:0]; [pRecordState->mSelf sendEventWithName:@"data" body:str]; // Before adding buffer to the queue i dont need the old enqueued data is there a way to delete those buffers.?? AudioQueueEnqueueBuffer(pRecordState->mQueue, inBuffer, 0, NULL); } - (NSArray<NSString *> *)supportedEvents { return @[@"data"]; } - (void)dealloc { RCTLogInfo(@"dealloc"); AudioQueueDispose(_recordState.mQueue, true); } @end