C++ (Cpp) SetPhysicalFormat Examples

Example #1

File: CoreAudioStream.cpp Project: CEikermann/xbmc

// TODO: Should it even be possible to change both the 
// physical and virtual formats, since the devices do it themselves?
void CCoreAudioStream::Close(bool restore)
{
  if (!m_StreamId)
    return;

  std::string formatString;

  // remove the physical/virtual property listeners before we make changes
  // that will trigger callbacks that we do not care about.
  AudioObjectPropertyAddress propertyAOPA;
  propertyAOPA.mScope    = kAudioObjectPropertyScopeGlobal;
  propertyAOPA.mElement  = kAudioObjectPropertyElementMaster;  
  propertyAOPA.mSelector = kAudioStreamPropertyPhysicalFormat;
  if (AudioObjectRemovePropertyListener(m_StreamId, &propertyAOPA, HardwareStreamListener, this) != noErr)
    CLog::Log(LOGDEBUG, "CCoreAudioStream::Close: Couldn't remove property listener.");

  propertyAOPA.mScope    = kAudioObjectPropertyScopeGlobal;
  propertyAOPA.mElement  = kAudioObjectPropertyElementMaster;  
  propertyAOPA.mSelector = kAudioStreamPropertyVirtualFormat;
  if (AudioObjectRemovePropertyListener(m_StreamId, &propertyAOPA, HardwareStreamListener, this) != noErr)
    CLog::Log(LOGDEBUG, "CCoreAudioStream::Close: Couldn't remove property listener.");

  // Revert any format changes we made
  if (restore && m_OriginalVirtualFormat.mFormatID && m_StreamId)
  {
    CLog::Log(LOGDEBUG, "CCoreAudioStream::Close: "
      "Restoring original virtual format for stream 0x%04x. (%s)",
      (uint)m_StreamId, StreamDescriptionToString(m_OriginalVirtualFormat, formatString));
    AudioStreamBasicDescription setFormat = m_OriginalVirtualFormat;
    SetVirtualFormat(&setFormat);
  }
  if (restore && m_OriginalPhysicalFormat.mFormatID && m_StreamId)
  {
    CLog::Log(LOGDEBUG, "CCoreAudioStream::Close: "
      "Restoring original physical format for stream 0x%04x. (%s)",
      (uint)m_StreamId, StreamDescriptionToString(m_OriginalPhysicalFormat, formatString));
    AudioStreamBasicDescription setFormat = m_OriginalPhysicalFormat;
    SetPhysicalFormat(&setFormat);
  }

  m_OriginalVirtualFormat.mFormatID  = 0;
  m_OriginalPhysicalFormat.mFormatID = 0;
  CLog::Log(LOGDEBUG, "CCoreAudioStream::Close: Closed stream 0x%04x.", (uint)m_StreamId);
  m_StreamId = 0;
}

Example #2

File: CoreAudio.cpp Project: flyingtime/boxee

// TODO: Should it even be possible to change both the physical and virtual formats, since the devices do it themselves?
void CCoreAudioStream::Close()
{
  if (!m_StreamId)
    return;
  
  // Revert any format changes we made
  if (m_OriginalVirtualFormat.mFormatID && m_StreamId)
  {
    CLog::Log(LOGDEBUG, "CCoreAudioStream::Close: Restoring original virtual format for stream 0x%04x.", m_StreamId);
    SetVirtualFormat(&m_OriginalVirtualFormat);
  }
  if (m_OriginalPhysicalFormat.mFormatID && m_StreamId)
  {
    CLog::Log(LOGDEBUG, "CCoreAudioStream::Close: Restoring original physical format for stream 0x%04x.", m_StreamId);
    SetPhysicalFormat(&m_OriginalPhysicalFormat);
  }
  
  m_OriginalPhysicalFormat.mFormatID = 0;
  m_OriginalVirtualFormat.mFormatID = 0;
  CLog::Log(LOGDEBUG, "CCoreAudioStream::Close: Closed stream 0x%04x.", m_StreamId);
  m_StreamId = 0;
}