1 files changed, 193 insertions, 0 deletions
diff --git a/mpeglib/lib/util/audio/dspWrapper.cpp b/mpeglib/lib/util/audio/dspWrapper.cpp
new file mode 100644
index 00000000..cd9afa57
--- /dev/null
+++ b/mpeglib/lib/util/audio/dspWrapper.cpp
@@ -0,0 +1,193 @@
+/*
+  a wrapper for the audioDevice.
+  Copyright (C) 1998  Martin Vogt
+
+  This program is free software; you can redistribute it and/or modify
+  it under the terms of the GNU Library General Public License as published by
+  the Free Software Foundation.
+
+  For more information look at the file COPYRIGHT in this package
+
+ */
+
+
+#include "dspWrapper.h"
+#include "audioIO.h"
+
+
+#include "../../frame/pcmFrame.h"
+#include "../../frame/floatFrame.h"
+
+#include <iostream>
+
+using namespace std;
+
+DSPWrapper::DSPWrapper() {
+  currentFormat=new PCMFrame(0);
+  lopenDevice=false;
+  lopenMixer=false;
+
+  audioConstruct();
+}
+
+DSPWrapper::~DSPWrapper() {
+  if (lopenDevice) {
+    audioClose();
+  }
+  if (lopenMixer) {
+    mixerClose();
+  }
+  audioDestruct(); 
+  delete currentFormat;
+}
+ 
+
+int DSPWrapper::isOpenDevice() {
+  return lopenDevice;
+}
+
+int DSPWrapper::openDevice() {
+  if (lopenDevice==true) {
+    return true;
+  }
+  lopenDevice=audioOpen();
+  return lopenDevice;
+}  
+ 
+int DSPWrapper::closeDevice() {
+  if (isOpenDevice() == true) {
+    audioClose();
+    currentFormat->setFrameFormat(-1,-1);
+    lopenDevice=false;
+  }
+  return true;
+}
+
+
+int DSPWrapper::isOpenMixer() {
+  return lopenMixer;
+}
+
+
+int DSPWrapper::getAudioBufferSize() {
+  return ::getAudioBufferSize();
+}
+
+
+int DSPWrapper::openMixer() {
+  lopenMixer=mixerOpen();
+  return lopenMixer;
+}  
+ 
+int DSPWrapper::closeMixer() {
+  if (isOpenMixer() == true) {
+    mixerClose();
+    lopenMixer=false;
+  }
+  return true;
+}
+
+    
+int DSPWrapper::audioPlay(char *buf, int len) {
+  return audioWrite(buf,len);
+}
+
+int DSPWrapper::audioSetup(int stereo,int sampleSize,int lSigned,
+			   int lBigEndian,int freq) {
+
+  
+  if (isOpenDevice()==false) {
+    cout << "device not open"<<endl;
+    exit(-1);
+  }
+  /*
+    cout << "sampleSize:"<<sampleSize<<endl;
+    cout << "freq:"<<freq<<endl;
+    cout << "stereo:"<<stereo<<endl;
+    cout << "lSigned:"<<lSigned<<endl;
+    cout << "lBigEndian:"<<lBigEndian<<endl;
+  */
+  audioInit(sampleSize,freq,stereo,lSigned,lBigEndian);
+  if (currentFormat->getSampleSize() != sampleSize) {
+    cout << "FIXME: pcmFrame with sampleSize:"<<sampleSize<<endl;
+  }
+  currentFormat->setFrameFormat(stereo,freq);
+  return true;
+}
+
+int DSPWrapper::audioSetup(AudioFrame* audioFrame) {
+  if (audioFrame == NULL) {
+    cout << "audioFrame NULL: DSPWrapper:audioSetup"<<endl;
+    exit(0);
+  }
+  if(audioFrame->isFormatEqual(currentFormat)==false) {
+    audioSetup(audioFrame->getStereo(),audioFrame->getSampleSize(),
+	       audioFrame->getSigned(),audioFrame->getBigEndian(),
+	       audioFrame->getFrequenceHZ());
+  }
+  return true;
+}
+
+
+int DSPWrapper::audioPlay(PCMFrame* pcmFrame) {
+  if (pcmFrame == NULL) {
+    cout << "pcmFrame NULL: DSPWrapper:audioPlay"<<endl;
+    exit(0);
+  }
+  if(pcmFrame->isFormatEqual(currentFormat)==false) {
+    audioSetup(pcmFrame->getStereo(),pcmFrame->getSampleSize(),
+	       pcmFrame->getSigned(),pcmFrame->getBigEndian(),
+	       pcmFrame->getFrequenceHZ());
+  }
+  int len=pcmFrame->getLen()*2;
+  int played=audioPlay((char*)pcmFrame->getData(),len);
+  return (len == played);
+}
+
+
+//
+// Misuse our internal currentFormat for the float->int conversion.
+//
+
+int DSPWrapper::audioPlay(FloatFrame* floatFrame) {
+  if (floatFrame == NULL) {
+    cout << "floatFrame NULL: DSPWrapper:audioPlay"<<endl;
+    exit(0);
+  }
+  if(floatFrame->isFormatEqual(currentFormat)==false) {
+    audioSetup(floatFrame->getStereo(),floatFrame->getSampleSize(),
+	       floatFrame->getSigned(),floatFrame->getBigEndian(),
+	       floatFrame->getFrequenceHZ());
+  }
+
+  int tmpLen=currentFormat->getLen();
+  if (tmpLen < floatFrame->getLen()) {
+    delete currentFormat;
+    currentFormat=new PCMFrame(floatFrame->getLen());
+    floatFrame->copyFormat(currentFormat);
+  }
+  currentFormat->clearrawdata();
+  currentFormat->putFloatData(floatFrame->getData(),floatFrame->getLen());
+  return audioPlay(currentFormat);
+}
+
+void DSPWrapper::audioFlush() {
+  closeDevice();
+}
+
+
+void DSPWrapper::setVolume(float leftPercent,float rightPercent) {
+  if (isOpenMixer()) {
+    mixerSetVolume((int)leftPercent,(int)rightPercent);
+  } else {
+    cout << "cannot set Mixer settings:not open!"<<endl;
+  }   
+}
+
+
+void DSPWrapper::print() {
+  cout<<"lopenDevice:"<<lopenDevice<<endl;
+  cout<<"lopenMixer:"<<lopenMixer<<endl;
+  currentFormat->print("currentFormat");
+
+}