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// Copyright (C) 2003 Dolphin Project.
// This program is free software: you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation, version 2.0.
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU General Public License 2.0 for more details.
// A copy of the GPL 2.0 should have been included with the program.
// If not, see http://www.gnu.org/licenses/
// Official SVN repository and contact information can be found at
// http://code.google.com/p/dolphin-emu/
#include "AudioCommon.h"
#include "XAudio2Stream.h"
struct StreamingVoiceContext : public IXAudio2VoiceCallback
{
IXAudio2SourceVoice* pSourceVoice;
CMixer *m_mixer;
Common::EventEx *soundSyncEvent;
short *xaBuffer;
StreamingVoiceContext(IXAudio2 *pXAudio2, CMixer *pMixer, Common::EventEx *pSyncEvent)
{
m_mixer = pMixer;
soundSyncEvent = pSyncEvent;
WAVEFORMATEXTENSIBLE wfx;
memset(&wfx, 0, sizeof(WAVEFORMATEXTENSIBLE));
wfx.Format.wFormatTag = WAVE_FORMAT_EXTENSIBLE;
wfx.Format.nSamplesPerSec = m_mixer->GetSampleRate();
wfx.Format.nChannels = 2;
wfx.Format.wBitsPerSample = 16;
wfx.Format.nBlockAlign = wfx.Format.nChannels*wfx.Format.wBitsPerSample/8;
wfx.Format.nAvgBytesPerSec = wfx.Format.nSamplesPerSec * wfx.Format.nBlockAlign;
wfx.Format.cbSize = sizeof(WAVEFORMATEXTENSIBLE)-sizeof(WAVEFORMATEX);
wfx.Samples.wValidBitsPerSample = 16;
wfx.dwChannelMask = SPEAKER_FRONT_LEFT | SPEAKER_FRONT_RIGHT;
wfx.SubFormat = KSDATAFORMAT_SUBTYPE_PCM;
// create source voice
HRESULT hr;
if(FAILED(hr = pXAudio2->CreateSourceVoice(&pSourceVoice, (WAVEFORMATEX*)&wfx, XAUDIO2_VOICE_NOSRC, 1.0f, this)))
PanicAlert("XAudio2 CreateSourceVoice failed: %#X", hr);
pSourceVoice->FlushSourceBuffers();
pSourceVoice->Start();
xaBuffer = new s16[NUM_BUFFERS * BUFFER_SIZE];
memset(xaBuffer, 0, NUM_BUFFERS * BUFFER_SIZE_BYTES);
//start buffers with silence
for(int i=0; i < NUM_BUFFERS; i++)
{
XAUDIO2_BUFFER buf = {0};
buf.AudioBytes = BUFFER_SIZE_BYTES;
buf.pAudioData = (BYTE *) &xaBuffer[i * BUFFER_SIZE];
buf.pContext = (void *) buf.pAudioData;
pSourceVoice->SubmitSourceBuffer(&buf);
}
}
~StreamingVoiceContext()
{
IXAudio2SourceVoice* temp = pSourceVoice;
pSourceVoice = NULL;
temp->FlushSourceBuffers();
temp->DestroyVoice();
safe_delete_array(xaBuffer);
}
void StreamingVoiceContext::Stop() {
if (pSourceVoice)
pSourceVoice->Stop();
}
void StreamingVoiceContext::Play() {
if (pSourceVoice)
pSourceVoice->Start();
}
STDMETHOD_(void, OnVoiceError) (THIS_ void* pBufferContext, HRESULT Error) {}
STDMETHOD_(void, OnVoiceProcessingPassStart) (UINT32) {}
STDMETHOD_(void, OnVoiceProcessingPassEnd) () {}
STDMETHOD_(void, OnBufferStart) (void*) {}
STDMETHOD_(void, OnLoopEnd) (void*) {}
STDMETHOD_(void, OnStreamEnd) () {}
STDMETHOD_(void, OnBufferEnd) (void* context)
{ //
// buffer end callback; gets SAMPLES_PER_BUFFER samples for a new buffer
//
if( !pSourceVoice || !context) return;
//soundSyncEvent->Init();
//soundSyncEvent->Wait(); //sync
//soundSyncEvent->Spin(); //or tight sync
//if (!pSourceVoice) return;
m_mixer->Mix((short *)context, SAMPLES_PER_BUFFER);
XAUDIO2_BUFFER buf = {0};
buf.AudioBytes = BUFFER_SIZE_BYTES;
buf.pAudioData = (byte*)context;
buf.pContext = context;
pSourceVoice->SubmitSourceBuffer(&buf);
}
};
StreamingVoiceContext* pVoiceContext = 0;
bool XAudio2::Start()
{
//soundSyncEvent.Init();
// XAudio2 init
CoInitializeEx(NULL, COINIT_MULTITHREADED);
HRESULT hr;
if(FAILED(hr = XAudio2Create(&pXAudio2, 0, XAUDIO2_ANY_PROCESSOR))) //callback dosent seem to run on a speecific cpu anyways
{
PanicAlert("XAudio2 init failed: %#X", hr);
CoUninitialize();
return false;
}
// XAudio2 master voice
// XAUDIO2_DEFAULT_CHANNELS instead of 2 for expansion?
if(FAILED(hr = pXAudio2->CreateMasteringVoice(&pMasteringVoice, 2, m_mixer->GetSampleRate())))
{
PanicAlert("XAudio2 master voice creation failed: %#X", hr);
safe_release(pXAudio2);
CoUninitialize();
return false;
}
// Volume
if (pMasteringVoice)
pMasteringVoice->SetVolume(m_volume);
if (pXAudio2)
pVoiceContext = new StreamingVoiceContext(pXAudio2, m_mixer, &soundSyncEvent);
return true;
}
void XAudio2::SetVolume(int volume)
{
//linear 1- .01
m_volume = (float)volume / 100.0;
if (pMasteringVoice)
pMasteringVoice->SetVolume(m_volume);
}
//XAUDIO2_PERFORMANCE_DATA perfData;
//int xi = 0;
void XAudio2::Update()
{
//soundSyncEvent.Set();
//xi++;
//if (xi == 100000) {
// xi = 0;
// pXAudio2->GetPerformanceData(&perfData);
// NOTICE_LOG(DSPHLE, "XAudio2 latency (samples): %i",perfData.CurrentLatencyInSamples);
// NOTICE_LOG(DSPHLE, "XAudio2 total glitches: %i",perfData.GlitchesSinceEngineStarted);
//}
}
void XAudio2::Clear(bool mute)
{
m_muted = mute;
if (pVoiceContext)
{
if (m_muted)
pVoiceContext->Stop();
else
pVoiceContext->Play();
}
}
void XAudio2::Stop()
{
//soundSyncEvent.Set();
safe_delete(pVoiceContext);
pVoiceContext = NULL;
if(pMasteringVoice)
pMasteringVoice->DestroyVoice();
safe_release(pXAudio2);
pMasteringVoice = NULL;
CoUninitialize();
//soundSyncEvent.Shutdown();
}
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