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Diffstat (limited to 'Samples/CommonSrc/Platform/OSX_WavPlayer.cpp')
| -rw-r--r-- | Samples/CommonSrc/Platform/OSX_WavPlayer.cpp | 242 |
1 files changed, 0 insertions, 242 deletions
diff --git a/Samples/CommonSrc/Platform/OSX_WavPlayer.cpp b/Samples/CommonSrc/Platform/OSX_WavPlayer.cpp deleted file mode 100644 index a6cb937..0000000 --- a/Samples/CommonSrc/Platform/OSX_WavPlayer.cpp +++ /dev/null @@ -1,242 +0,0 @@ -/************************************************************************************ - -Filename : WavPlayer_OSX.cpp -Content : An Apple OSX audio handler. -Created : March 5, 2013 -Authors : Robotic Arm Software - Peter Hoff, Dan Goodman, Bryan Croteau - -Copyright : Copyright 2013 Oculus VR, Inc. All Rights reserved. - -Use of this software is subject to the terms of the Oculus LLC license -agreement provided at the time of installation or download, or which -otherwise accompanies this software in either electronic or hard copy form. - -************************************************************************************/ - -#include "OSX_WavPlayer.h" - -namespace OVR { namespace Platform { namespace OSX { - -WavPlayer::WavPlayer(const char* fileName) -{ - FileName = fileName; -} - -bool WavPlayer::isDataChunk(unsigned char* buffer, int index) -{ - unsigned char a = buffer[index]; - unsigned char b = buffer[index + 1]; - unsigned char c = buffer[index + 2]; - unsigned char d = buffer[index + 3]; - return (a == 'D' || a == 'd') && (b == 'A' || b == 'a') && - (c == 'T' || c == 't') && (d == 'A' || d == 'a'); -} - -int WavPlayer::getWord(unsigned char* buffer, int index) -{ - unsigned char a = buffer[index]; - unsigned char b = buffer[index + 1]; - unsigned char c = buffer[index + 2]; - unsigned char d = buffer[index + 3]; - int result = 0; - result |= a; - result |= b << 8; - result |= c << 16; - result |= d << 24; - return result; -} - -short WavPlayer::getHalf(unsigned char* buffer, int index) -{ - unsigned char a = buffer[index]; - unsigned char b = buffer[index + 1]; - short result = 0; - result |= a; - result |= b << 8; - return result; -} - -void *WavPlayer::LoadPCM(const char *filename, unsigned long *len) -{ - FILE *file; - struct stat s; - void *pcm; - - if(stat(filename, &s)) - { - return NULL; - } - *len = s.st_size; - pcm = (void *) malloc(s.st_size); - if(!pcm) - { - return NULL; - } - file = fopen(filename, "rb"); - if(!file) - { - free(pcm); - return NULL; - } - fread(pcm, s.st_size, 1, file); - fclose(file); - return pcm; -} - -int WavPlayer::PlayBuffer(void *pcmbuffer, unsigned long len) -{ - AQCallbackStruct aqc; - UInt32 err, bufferSize; - int i; - - aqc.DataFormat.mSampleRate = SampleRate; - aqc.DataFormat.mFormatID = kAudioFormatLinearPCM; - if(BitsPerSample == 16) - { - aqc.DataFormat.mFormatFlags = kLinearPCMFormatFlagIsSignedInteger - | kAudioFormatFlagIsPacked; - } - aqc.DataFormat.mBytesPerPacket = NumChannels * (BitsPerSample / 8); - aqc.DataFormat.mFramesPerPacket = 1; - aqc.DataFormat.mBytesPerFrame = NumChannels * (BitsPerSample / 8); - aqc.DataFormat.mChannelsPerFrame = NumChannels; - aqc.DataFormat.mBitsPerChannel = BitsPerSample; - aqc.FrameCount = SampleRate / 60; - aqc.SampleLen = (UInt32)(len); - aqc.PlayPtr = 0; - aqc.PCMBuffer = static_cast<unsigned char*>(pcmbuffer); - - err = AudioQueueNewOutput(&aqc.DataFormat, - aqBufferCallback, - &aqc, - NULL, - kCFRunLoopCommonModes, - 0, - &aqc.Queue); - if(err) - { - return err; - } - - aqc.FrameCount = SampleRate / 60; - bufferSize = aqc.FrameCount * aqc.DataFormat.mBytesPerPacket; - - for(i = 0; i < AUDIO_BUFFERS; i++) - { - err = AudioQueueAllocateBuffer(aqc.Queue, bufferSize, - &aqc.Buffers[i]); - if(err) - { - return err; - } - aqBufferCallback(&aqc, aqc.Queue, aqc.Buffers[i]); - } - - err = AudioQueueStart(aqc.Queue, NULL); - if(err) - { - return err; - } - - while(true) - { - } - sleep(1); - return 0; -} - -void WavPlayer::aqBufferCallback(void *in, AudioQueueRef inQ, AudioQueueBufferRef outQB) -{ - AQCallbackStruct *aqc; - unsigned char *coreAudioBuffer; - - aqc = (AQCallbackStruct *) in; - coreAudioBuffer = (unsigned char*) outQB->mAudioData; - - printf("Sync: %u / %u\n", aqc->PlayPtr, aqc->SampleLen); - - if(aqc->FrameCount > 0) - { - outQB->mAudioDataByteSize = aqc->DataFormat.mBytesPerFrame * aqc->FrameCount; - for(int i = 0; i < aqc->FrameCount * aqc->DataFormat.mBytesPerFrame; i++) - { - if(aqc->PlayPtr > aqc->SampleLen) - { - aqc->PlayPtr = 0; - i = 0; - } - coreAudioBuffer[i] = aqc->PCMBuffer[aqc->PlayPtr]; - aqc->PlayPtr++; - } - AudioQueueEnqueueBuffer(inQ, outQB, 0, NULL); - } -} - -int WavPlayer::PlayAudio() -{ - unsigned long len; - void *pcmbuffer; - int ret; - - pcmbuffer = LoadPCM(FileName, &len); - if(!pcmbuffer) - { - fprintf(stderr, "%s: %s\n", FileName, strerror(errno)); - exit(EXIT_FAILURE); - } - - unsigned char* bytes = (unsigned char*)pcmbuffer; - int index = 0; - - // 'RIFF' - getWord(bytes, index); - index += 4; - // int Length - getWord(bytes, index); - index += 4; - // 'WAVE' - getWord(bytes, index); - index += 4; - // 'fmt ' - getWord(bytes, index); - index += 4; - - // int Format Length - int fmtLen = getWord(bytes, index); - index += 4; - AudioFormat = getHalf(bytes, index); - index += 2; - NumChannels = getHalf(bytes, index); - index += 2; - SampleRate = getWord(bytes, index); - index += 4; - ByteRate = getWord(bytes, index); - index += 4; - BlockAlign = getHalf(bytes, index); - index += 2; - BitsPerSample = getHalf(bytes, index); - index += 2; - index += fmtLen - 16; - while(!isDataChunk(bytes, index)) - { - // Any Chunk - getWord(bytes, index); - index += 4; - // Any Chunk Length - int anyChunkLen = getWord(bytes, index); - index += 4 + anyChunkLen; - } - // 'data' - getWord(bytes, index); - index += 4; - // int Data Length - unsigned long dataLen = getWord(bytes, index); - index += 4; - unsigned char* target = &bytes[index]; - - ret = PlayBuffer((void *)target, dataLen); - free(pcmbuffer); - return ret; -} - -}}} |