125 lines
3.3 KiB
C++
125 lines
3.3 KiB
C++
/********************************************************************************
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Copyright (C) 2012 Hugh Bailey <obs.jim@gmail.com>
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307, USA.
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********************************************************************************/
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#include "DShowPlugin.h"
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#include <Audioclient.h>
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bool DeviceAudioSource::GetNextBuffer(void **buffer, UINT *numFrames, QWORD *timestamp)
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{
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if(sampleBuffer.Num() >= sampleSegmentSize)
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{
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OSEnterMutex(hAudioMutex);
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mcpy(outputBuffer.Array(), sampleBuffer.Array(), sampleSegmentSize);
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sampleBuffer.RemoveRange(0, sampleSegmentSize);
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OSLeaveMutex(hAudioMutex);
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*buffer = outputBuffer.Array();
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*numFrames = sampleFrameCount;
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*timestamp = API->GetAudioTime()+GetTimeOffset();
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return true;
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}
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return false;
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}
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void DeviceAudioSource::ReleaseBuffer()
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{
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}
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CTSTR DeviceAudioSource::GetDeviceName() const
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{
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if(device)
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return device->strDeviceName.Array();
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return NULL;
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}
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bool DeviceAudioSource::Initialize(DeviceSource *parent)
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{
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device = parent;
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hAudioMutex = OSCreateMutex();
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//---------------------------------
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bool bFloat = false;
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UINT inputChannels;
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UINT inputSamplesPerSec;
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UINT inputBitsPerSample;
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UINT inputBlockSize;
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DWORD inputChannelMask;
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//---------------------------------
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if(device->audioFormat.wFormatTag == WAVE_FORMAT_EXTENSIBLE)
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{
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WAVEFORMATEXTENSIBLE *wfext = (WAVEFORMATEXTENSIBLE*)&device->audioFormat;
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if(wfext->SubFormat == KSDATAFORMAT_SUBTYPE_IEEE_FLOAT)
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bFloat = true;
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}
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else if(device->audioFormat.wFormatTag == WAVE_FORMAT_IEEE_FLOAT)
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bFloat = true;
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inputBitsPerSample = device->audioFormat.wBitsPerSample;
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inputBlockSize = device->audioFormat.nBlockAlign;
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inputChannelMask = 0;
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inputChannels = device->audioFormat.nChannels;
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inputSamplesPerSec = device->audioFormat.nSamplesPerSec;
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sampleFrameCount = inputSamplesPerSec/100;
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sampleSegmentSize = inputBlockSize*sampleFrameCount;
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outputBuffer.SetSize(sampleSegmentSize);
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InitAudioData(bFloat, inputChannels, inputSamplesPerSec, inputBitsPerSample, inputBlockSize, inputChannelMask);
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return true;
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}
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DeviceAudioSource::~DeviceAudioSource()
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{
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if(hAudioMutex)
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OSCloseMutex(hAudioMutex);
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}
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void DeviceAudioSource::ReceiveAudio(LPBYTE lpData, UINT dataLength)
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{
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if(lpData)
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{
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OSEnterMutex(hAudioMutex);
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sampleBuffer.AppendArray(lpData, dataLength);
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OSLeaveMutex(hAudioMutex);
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}
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}
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void DeviceAudioSource::FlushSamples()
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{
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OSEnterMutex(hAudioMutex);
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sampleBuffer.Clear();
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OSLeaveMutex(hAudioMutex);
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}
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