Result SoundSourceWV::tryOpen(const AudioSourceConfig& audioSrcCfg) {
DEBUG_ASSERT(!m_wpc);
char msg[80]; // hold possible error message
int openFlags = OPEN_WVC | OPEN_NORMALIZE;
if ((kChannelCountMono == audioSrcCfg.channelCountHint) ||
(kChannelCountStereo == audioSrcCfg.channelCountHint)) {
openFlags |= OPEN_2CH_MAX;
}
m_wpc = WavpackOpenFileInput(
getLocalFileNameBytes().constData(), msg, openFlags, 0);
if (!m_wpc) {
qDebug() << "SSWV::open: failed to open file : " << msg;
return ERR;
}
setChannelCount(WavpackGetReducedChannels(m_wpc));
setFrameRate(WavpackGetSampleRate(m_wpc));
setFrameCount(WavpackGetNumSamples(m_wpc));
if (WavpackGetMode(m_wpc) & MODE_FLOAT) {
m_sampleScaleFactor = CSAMPLE_PEAK;
} else {
const int bitsPerSample = WavpackGetBitsPerSample(m_wpc);
const uint32_t wavpackPeakSampleValue = uint32_t(1)
<< (bitsPerSample - 1);
m_sampleScaleFactor = CSAMPLE_PEAK / CSAMPLE(wavpackPeakSampleValue);
}
return OK;
}
Result SoundSourceSndFile::tryOpen(const AudioSourceConfig& /*audioSrcCfg*/) {
DEBUG_ASSERT(!m_pSndFile);
SF_INFO sfInfo;
#ifdef __WINDOWS__
// Pointer valid until string changed
const QString fileName(getLocalFileName());
LPCWSTR lpcwFilename = (LPCWSTR) fileName.utf16();
m_pSndFile = sf_wchar_open(lpcwFilename, SFM_READ, &sfInfo);
#else
memset(&sfInfo, 0, sizeof(sfInfo));
m_pSndFile = sf_open(getLocalFileNameBytes().constData(), SFM_READ, &sfInfo);
#endif
if (!m_pSndFile) { // sf_format_check is only for writes
qWarning() << "Error opening libsndfile file:" << getUrlString()
<< sf_strerror(m_pSndFile);
return ERR;
}
if (sf_error(m_pSndFile) > 0) {
qWarning() << "Error opening libsndfile file:" << getUrlString()
<< sf_strerror(m_pSndFile);
return ERR;
}
setChannelCount(sfInfo.channels);
setFrameRate(sfInfo.samplerate);
setFrameCount(sfInfo.frames);
return OK;
}
Result SoundSourceModPlug::parseTrackMetadataAndCoverArt(
TrackMetadata* pTrackMetadata,
QImage* /*pCoverArt*/) const {
// The modplug library currently does not support reading cover-art from
// modplug files -- kain88 (Oct 2014)
QFile modFile(getLocalFileNameBytes());
modFile.open(QIODevice::ReadOnly);
const QByteArray fileBuf(modFile.readAll());
modFile.close();
ModPlug::ModPlugFile* pModFile = ModPlug::ModPlug_Load(fileBuf.constData(),
fileBuf.length());
if (NULL != pModFile) {
pTrackMetadata->setComment(QString(ModPlug::ModPlug_GetMessage(pModFile)));
pTrackMetadata->setTitle(QString(ModPlug::ModPlug_GetName(pModFile)));
pTrackMetadata->setDuration(ModPlug::ModPlug_GetLength(pModFile) / 1000);
pTrackMetadata->setBitrate(8); // not really, but fill in something...
ModPlug::ModPlug_Unload(pModFile);
}
return pModFile ? OK : ERR;
}
Result SoundSourceM4A::tryOpen(const AudioSourceConfig& audioSrcCfg) {
DEBUG_ASSERT(MP4_INVALID_FILE_HANDLE == m_hFile);
/* open MP4 file, check for >= ver 1.9.1 */
#if MP4V2_PROJECT_version_hex <= 0x00010901
m_hFile = MP4Read(getLocalFileNameBytes().constData(), 0);
#else
m_hFile = MP4Read(getLocalFileNameBytes().constData());
#endif
if (MP4_INVALID_FILE_HANDLE == m_hFile) {
qWarning() << "Failed to open file for reading:" << getUrlString();
return ERR;
}
m_trackId = findFirstAudioTrackId(m_hFile);
if (MP4_INVALID_TRACK_ID == m_trackId) {
qWarning() << "No AAC track found:" << getUrlString();
return ERR;
}
const MP4SampleId numberOfSamples =
MP4GetTrackNumberOfSamples(m_hFile, m_trackId);
if (0 >= numberOfSamples) {
qWarning() << "Failed to read number of samples from file:" << getUrlString();
return ERR;
}
m_maxSampleBlockId = kSampleBlockIdMin + (numberOfSamples - 1);
// Determine the maximum input size (in bytes) of a
// sample block for the selected track.
const u_int32_t maxSampleBlockInputSize = MP4GetTrackMaxSampleSize(m_hFile,
m_trackId);
m_inputBuffer.resize(maxSampleBlockInputSize, 0);
DEBUG_ASSERT(NULL == m_hDecoder); // not already opened
m_hDecoder = NeAACDecOpen();
if (!m_hDecoder) {
qWarning() << "Failed to open the AAC decoder!";
return ERR;
}
NeAACDecConfigurationPtr pDecoderConfig = NeAACDecGetCurrentConfiguration(
m_hDecoder);
pDecoderConfig->outputFormat = FAAD_FMT_FLOAT;
if ((kChannelCountMono == audioSrcCfg.channelCountHint) ||
(kChannelCountStereo == audioSrcCfg.channelCountHint)) {
pDecoderConfig->downMatrix = 1;
} else {
pDecoderConfig->downMatrix = 0;
}
pDecoderConfig->defObjectType = LC;
if (!NeAACDecSetConfiguration(m_hDecoder, pDecoderConfig)) {
qWarning() << "Failed to configure AAC decoder!";
return ERR;
}
u_int8_t* configBuffer = NULL;
u_int32_t configBufferSize = 0;
if (!MP4GetTrackESConfiguration(m_hFile, m_trackId, &configBuffer,
&configBufferSize)) {
/* failed to get mpeg-4 audio config... this is ok.
* NeAACDecInit2() will simply use default values instead.
*/
qWarning() << "Failed to read the MP4 audio configuration."
<< "Continuing with default values.";
}
SAMPLERATE_TYPE sampleRate;
unsigned char channelCount;
if (0 > NeAACDecInit2(m_hDecoder, configBuffer, configBufferSize,
&sampleRate, &channelCount)) {
free(configBuffer);
qWarning() << "Failed to initialize the AAC decoder!";
return ERR;
} else {
free(configBuffer);
}
setChannelCount(channelCount);
setFrameRate(sampleRate);
setFrameCount(getFrameCountForSampleBlockId(m_maxSampleBlockId));
// Resize temporary buffer for decoded sample data
const SINT sampleBufferCapacity =
frames2samples(kFramesPerSampleBlock);
m_sampleBuffer.resetCapacity(sampleBufferCapacity);
// Invalidate current position to enforce the following
// seek operation
m_curFrameIndex = getMaxFrameIndex();
// (Re-)Start decoding at the beginning of the file
seekSampleFrame(getMinFrameIndex());
return OK;
}