Steve Checkoway
90 lines
2.4 KiB
C++
90 lines
2.4 KiB
C++
#include "global.h"
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#include "RageSoundDriver_CA.h"
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#include "CAHelpers.h"
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#include "CAAudioHardwareSystem.h"
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#include "CAAudioHardwareDevice.h"
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#include "CAStreamBasicDescription.h"
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#include "CAException.h"
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#include "archutils/Unix/CrashHandler.h"
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namespace
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{
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AudioConverter *gConverter;
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}
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RageSound_CA::RageSound_CA()
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{
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try
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{
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AudioDeviceID dID = CAAudioHardwareSystem::GetDefaultDevice(false, false);
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mOutputDevice = new CAAudioHardwareDevice(dID);
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}
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catch (const CAException& e)
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{
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RageException::ThrowNonfatal("Couldn't create default output device.");
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}
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try
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{
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UInt32 frames = mOutputDevice->GetLatency(kAudioDeviceSectionOutput);
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mLatency = frames / 44100.0; // maybe? I'm tired, I don't know.
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}
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catch (const CAException& e)
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{
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RageException::ThrowNonfatal("Couldn't get Latency.");
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}
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gConverter = new AudioConverter(mOutputDevice, this);
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try
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{
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mOutputDevice->AddIOProc(GetData, this);
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mOutputDevice->StartIOProc(GetData);
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}
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catch(const CAException& e)
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{
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RageException::Throw("Couldn't start the IOProc.");
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}
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}
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RageSound_CA::~RageSound_CA()
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{
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mOutputDevice->StopIOProc(GetData);
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delete gConverter;
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delete mOutputDevice;
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}
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int64_t RageSound_CA::GetPosition(const RageSoundBase *sound) const
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{
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AudioTimeStamp time;
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mOutputDevice->GetCurrentTime(time);
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return int64_t(time.mSampleTime);
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}
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void RageSound_CA::FillConverter(void *data, UInt32 dataByteSize)
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{
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int frames = dataByteSize / gConverter->GetInputFormat().mBytesPerPacket;
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this->Mix((int16_t *)data, frames, mDecodePos, GetPosition(NULL));
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}
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OSStatus RageSound_CA::GetData(AudioDeviceID inDevice,
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const AudioTimeStamp *inNow,
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const AudioBufferList *inInputData,
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const AudioTimeStamp *inInputTime,
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AudioBufferList *outOutputData,
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const AudioTimeStamp *inOutputTime,
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void *inClientData)
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{
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RageSound_CA *This = (RageSound_CA *)inClientData;
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UInt32 dataPackets = outOutputData->mBuffers[0].mDataByteSize;
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dataPackets /= gConverter->GetOutputFormat().mBytesPerPacket;
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This->mDecodePos = int64_t(inOutputTime->mSampleTime);
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gConverter->FillComplexBuffer(dataPackets, *outOutputData, NULL);
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return noErr;
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}
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