diff options
Diffstat (limited to 'Samples/CommonSrc/Platform/OSX_WavPlayer.cpp')
-rw-r--r-- | Samples/CommonSrc/Platform/OSX_WavPlayer.cpp | 484 |
1 files changed, 242 insertions, 242 deletions
diff --git a/Samples/CommonSrc/Platform/OSX_WavPlayer.cpp b/Samples/CommonSrc/Platform/OSX_WavPlayer.cpp index 6119888..a6cb937 100644 --- a/Samples/CommonSrc/Platform/OSX_WavPlayer.cpp +++ b/Samples/CommonSrc/Platform/OSX_WavPlayer.cpp @@ -1,242 +1,242 @@ -/************************************************************************************
-
-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;
-}
-
-}}}
+/************************************************************************************ + +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; +} + +}}} |