Result SoundSourceMediaFoundation::tryOpen(const Mixxx::AudioSourceConfig& audioSrcCfg) {
if (SUCCEEDED(m_hrCoInitialize)) {
qWarning() << "Cannot reopen MediaFoundation file" << getUrlString();
return ERR;
}
const QString fileName(getLocalFileName());
if (sDebug) {
qDebug() << "open()" << fileName;
}
// Initialize the COM library.
m_hrCoInitialize = CoInitializeEx(NULL,
COINIT_APARTMENTTHREADED | COINIT_DISABLE_OLE1DDE);
if (FAILED(m_hrCoInitialize)) {
qWarning() << "SSMF: failed to initialize COM";
return ERR;
}
// Initialize the Media Foundation platform.
m_hrMFStartup = MFStartup(MF_VERSION);
if (FAILED(m_hrCoInitialize)) {
qWarning() << "SSMF: failed to initialize Media Foundation";
return ERR;
}
QString qurlStr(fileName);
// http://social.msdn.microsoft.com/Forums/en/netfxbcl/thread/35c6a451-3507-40c8-9d1c-8d4edde7c0cc
// gives maximum path + file length as 248 + 260, using that -bkgood
m_wcFilename = new wchar_t[248 + 260];
int wcFilenameLength(fileName.toWCharArray(m_wcFilename));
// toWCharArray does not append a null terminator to the string!
m_wcFilename[wcFilenameLength] = '\0';
// Create the source reader to read the input file.
HRESULT hr = MFCreateSourceReaderFromURL(m_wcFilename, NULL, &m_pReader);
if (FAILED(hr)) {
qWarning() << "SSMF: Error opening input file:" << fileName;
return ERR;
}
if (!configureAudioStream(audioSrcCfg)) {
qWarning() << "SSMF: Error configuring audio stream.";
return ERR;
}
//Seek to position 0, which forces us to skip over all the header frames.
//This makes sure we're ready to just let the Analyser rip and it'll
//get the number of samples it expects (ie. no header frames).
seekSampleFrame(0);
return OK;
}
int SoundSourceMediaFoundation::open()
{
if (sDebug) {
qDebug() << "open()" << m_qFilename;
}
QString qurlStr(m_qFilename);
int wcFilenameLength(m_qFilename.toWCharArray(m_wcFilename));
// toWCharArray does not append a null terminator to the string!
m_wcFilename[wcFilenameLength] = '\0';
HRESULT hr(S_OK);
// Initialize the COM library.
hr = CoInitializeEx(NULL, COINIT_APARTMENTTHREADED | COINIT_DISABLE_OLE1DDE);
if (FAILED(hr)) {
qWarning() << "SSMF: failed to initialize COM";
return ERR;
}
// Initialize the Media Foundation platform.
hr = MFStartup(MF_VERSION);
if (FAILED(hr)) {
qWarning() << "SSMF: failed to initialize Media Foundation";
return ERR;
}
// Create the source reader to read the input file.
hr = MFCreateSourceReaderFromURL(m_wcFilename, NULL, &m_pReader);
if (FAILED(hr)) {
qWarning() << "SSMF: Error opening input file:" << m_qFilename;
return ERR;
}
if (!configureAudioStream()) {
qWarning() << "SSMF: Error configuring audio stream.";
return ERR;
}
if (!readProperties()) {
qWarning() << "SSMF::readProperties failed";
return ERR;
}
//Seek to position 0, which forces us to skip over all the header frames.
//This makes sure we're ready to just let the Analyser rip and it'll
//get the number of samples it expects (ie. no header frames).
seek(0);
return OK;
}