virtual cnt_t Read(t_sample *rbuf,cnt_t frames)
{
FLEXT_ASSERT(extractionSessionRef != nil);
AudioBufferList bufferlist;
bufferlist.mNumberBuffers = 1;
bufferlist.mBuffers->mData = rbuf;
bufferlist.mBuffers->mDataByteSize = int(frames)*channels*sizeof(*rbuf);
bufferlist.mBuffers->mNumberChannels = channels;
UInt32 numFrames = int(frames);
UInt32 flags = 0;
OSStatus err = MovieAudioExtractionFillBuffer(extractionSessionRef, &numFrames, &bufferlist, &flags);
if(err) {
post("Error %i filling audio buffer",err);
return -1;
}
if((flags&kQTMovieAudioExtractionComplete) && !numFrames) {
// extraction complete!
return -1;
}
return numFrames;
}
void
QuickTimeFileReader::DecodeThread::run()
{
if (m_reader->m_cacheMode == CacheInTemporaryFile) {
m_reader->m_completion = 1;
m_reader->startSerialised("QuickTimeFileReader::Decode");
}
while (1) {
UInt32 framesRead = m_reader->m_d->blockSize;
UInt32 extractionFlags = 0;
m_reader->m_d->err = MovieAudioExtractionFillBuffer
(m_reader->m_d->extractionSessionRef, &framesRead,
&m_reader->m_d->buffer, &extractionFlags);
if (m_reader->m_d->err) {
m_reader->m_error = QString("Error in QuickTime decoding: code %1")
.arg(m_reader->m_d->err);
break;
}
// QuickTime buffers are interleaved unless specified otherwise
m_reader->addSamplesToDecodeCache(m_reader->m_d->data, framesRead);
if (framesRead < m_reader->m_d->blockSize) break;
}
m_reader->finishDecodeCache();
m_reader->m_d->err = MovieAudioExtractionEnd(m_reader->m_d->extractionSessionRef);
if (m_reader->m_d->err) {
m_reader->m_error = QString("Error ending QuickTime extraction session: code %1").arg(m_reader->m_d->err);
}
m_reader->m_completion = 100;
m_reader->endSerialised();
}
ProgressResult QTImportFileHandle::Import(TrackFactory *trackFactory,
TrackHolders &outTracks,
Tags *tags)
{
outTracks.clear();
OSErr err = noErr;
MovieAudioExtractionRef maer = NULL;
auto updateResult = ProgressResult::Success;
auto totSamples =
(sampleCount) GetMovieDuration(mMovie); // convert from TimeValue
decltype(totSamples) numSamples = 0;
Boolean discrete = true;
UInt32 quality = kQTAudioRenderQuality_Max;
AudioStreamBasicDescription desc;
UInt32 maxSampleSize;
bool res = false;
auto cleanup = finally( [&] {
if (maer) {
MovieAudioExtractionEnd(maer);
}
} );
CreateProgress();
do
{
err = MovieAudioExtractionBegin(mMovie, 0, &maer);
if (err != noErr) {
AudacityMessageBox(_("Unable to start QuickTime extraction"));
break;
}
err = MovieAudioExtractionSetProperty(maer,
kQTPropertyClass_MovieAudioExtraction_Audio,
kQTMovieAudioExtractionAudioPropertyID_RenderQuality,
sizeof(quality),
&quality);
if (err != noErr) {
AudacityMessageBox(_("Unable to set QuickTime render quality"));
break;
}
err = MovieAudioExtractionSetProperty(maer,
kQTPropertyClass_MovieAudioExtraction_Movie,
kQTMovieAudioExtractionMoviePropertyID_AllChannelsDiscrete,
sizeof(discrete),
&discrete);
if (err != noErr) {
AudacityMessageBox(_("Unable to set QuickTime discrete channels property"));
break;
}
err = MovieAudioExtractionGetProperty(maer,
kQTPropertyClass_MovieAudioExtraction_Audio,
kQTAudioPropertyID_MaxAudioSampleSize,
sizeof(maxSampleSize),
&maxSampleSize,
NULL);
if (err != noErr) {
AudacityMessageBox(_("Unable to get QuickTime sample size property"));
break;
}
err = MovieAudioExtractionGetProperty(maer,
kQTPropertyClass_MovieAudioExtraction_Audio,
kQTMovieAudioExtractionAudioPropertyID_AudioStreamBasicDescription,
sizeof(desc),
&desc,
NULL);
if (err != noErr) {
AudacityMessageBox(_("Unable to retrieve stream description"));
break;
}
auto numchan = desc.mChannelsPerFrame;
const size_t bufsize = 5 * desc.mSampleRate;
// determine sample format
sampleFormat format;
switch (maxSampleSize)
{
case 16:
format = int16Sample;
break;
case 24:
format = int24Sample;
break;
default:
format = floatSample;
break;
}
// Allocate an array of pointers, whose size is not known statically,
// and prefixed with the AudioBufferList structure.
MallocPtr< AudioBufferList > abl{
static_cast< AudioBufferList * >(
calloc( 1, offsetof( AudioBufferList, mBuffers ) +
(sizeof(AudioBuffer) * numchan))) };
abl->mNumberBuffers = numchan;
TrackHolders channels{ numchan };
const auto size = sizeof(float) * bufsize;
ArraysOf<unsigned char> holders{ numchan, size };
for (size_t c = 0; c < numchan; c++) {
auto &buffer = abl->mBuffers[c];
auto &holder = holders[c];
auto &channel = channels[c];
buffer.mNumberChannels = 1;
buffer.mDataByteSize = size;
buffer.mData = holder.get();
channel = trackFactory->NewWaveTrack( format );
channel->SetRate( desc.mSampleRate );
if (numchan == 2) {
if (c == 0) {
channel->SetChannel(Track::LeftChannel);
channel->SetLinked(true);
}
else if (c == 1) {
channel->SetChannel(Track::RightChannel);
}
}
}
do {
UInt32 flags = 0;
UInt32 numFrames = bufsize;
err = MovieAudioExtractionFillBuffer(maer,
&numFrames,
abl.get(),
&flags);
if (err != noErr) {
AudacityMessageBox(_("Unable to get fill buffer"));
break;
}
for (size_t c = 0; c < numchan; c++) {
channels[c]->Append((char *) abl->mBuffers[c].mData, floatSample, numFrames);
}
numSamples += numFrames;
updateResult = mProgress->Update(
numSamples.as_long_long(),
totSamples.as_long_long() );
if (numFrames == 0 || flags & kQTMovieAudioExtractionComplete) {
break;
}
} while (updateResult == ProgressResult::Success);
res = (updateResult == ProgressResult::Success && err == noErr);
if (res) {
for (const auto &channel: channels) {
channel->Flush();
}
outTracks.swap(channels);
}
//
// Extract any metadata
//
if (res) {
AddMetadata(tags);
}
} while (false);
// done:
return (res ? ProgressResult::Success : ProgressResult::Failed);
}
static DWORD WINAPI QTSplitter_thread(LPVOID data)
{
QTSplitter *This = (QTSplitter *)data;
HRESULT hr = S_OK;
TimeValue next_time;
CVPixelBufferRef pixelBuffer = NULL;
OSStatus err;
TimeRecord tr;
WaitForSingleObject(This->runEvent, -1);
EnterCriticalSection(&This->csReceive);
if (!This->pQTMovie)
{
LeaveCriticalSection(&This->csReceive);
return 0;
}
This->state = State_Running;
/* Prime the pump: Needed for MPEG streams */
GetMovieNextInterestingTime(This->pQTMovie, nextTimeEdgeOK | nextTimeStep, 0, NULL, This->movie_time, 1, &next_time, NULL);
GetMovieTime(This->pQTMovie, &tr);
if (This->pAudio_Pin)
QT_Create_Extract_Session(This);
LeaveCriticalSection(&This->csReceive);
do
{
LONGLONG tStart=0, tStop=0;
LONGLONG mStart=0, mStop=0;
float time;
EnterCriticalSection(&This->csReceive);
if (!This->pQTMovie)
{
LeaveCriticalSection(&This->csReceive);
return 0;
}
GetMovieNextInterestingTime(This->pQTMovie, nextTimeStep, 0, NULL, This->movie_time, 1, &next_time, NULL);
if (next_time == -1)
{
TRACE("No next time\n");
LeaveCriticalSection(&This->csReceive);
break;
}
tr.value = SInt64ToWide(next_time);
SetMovieTime(This->pQTMovie, &tr);
MoviesTask(This->pQTMovie,0);
QTVisualContextTask(This->vContext);
TRACE("In loop at time %ld\n",This->movie_time);
TRACE("In Next time %ld\n",next_time);
mStart = This->movie_time;
mStop = next_time;
time = (float)(This->movie_time - This->movie_start) / This->movie_scale;
tStart = time * 10000000;
time = (float)(next_time - This->movie_start) / This->movie_scale;
tStop = time * 10000000;
/* Deliver Audio */
if (This->pAudio_Pin && This->pAudio_Pin->pin.pin.pConnectedTo && This->aSession)
{
int data_size=0;
BYTE* ptr;
IMediaSample *sample = NULL;
AudioBufferList aData;
UInt32 flags;
UInt32 frames;
WAVEFORMATEX* pvi;
float duration;
pvi = (WAVEFORMATEX*)This->pAudio_Pin->pmt->pbFormat;
hr = BaseOutputPinImpl_GetDeliveryBuffer(&This->pAudio_Pin->pin, &sample, NULL, NULL, 0);
if (FAILED(hr))
{
ERR("Audio: Unable to get delivery buffer (%x)\n", hr);
goto audio_error;
}
hr = IMediaSample_GetPointer(sample, &ptr);
if (FAILED(hr))
{
ERR("Audio: Unable to get pointer to buffer (%x)\n", hr);
goto audio_error;
}
duration = (float)next_time / This->movie_scale;
time = (float)This->movie_time / This->movie_scale;
duration -= time;
frames = pvi->nSamplesPerSec * duration;
TRACE("Need audio for %f seconds (%li frames)\n",duration,frames);
data_size = IMediaSample_GetSize(sample);
if (data_size < frames * pvi->nBlockAlign)
FIXME("Audio buffer is too small\n");
aData.mNumberBuffers = 1;
aData.mBuffers[0].mNumberChannels = pvi->nChannels;
aData.mBuffers[0].mDataByteSize = data_size;
aData.mBuffers[0].mData = ptr;
err = MovieAudioExtractionFillBuffer(This->aSession, &frames, &aData, &flags);
if (frames == 0)
{
TimeRecord etr;
/* Ran out of frames, Restart the extraction session */
TRACE("Restarting extraction session\n");
MovieAudioExtractionEnd(This->aSession);
This->aSession = NULL;
QT_Create_Extract_Session(This);
etr = tr;
etr.value = SInt64ToWide(This->movie_time);
MovieAudioExtractionSetProperty(This->aSession,
kQTPropertyClass_MovieAudioExtraction_Movie,
kQTMovieAudioExtractionMoviePropertyID_CurrentTime,
sizeof(TimeRecord), &etr );
frames = pvi->nSamplesPerSec * duration;
aData.mNumberBuffers = 1;
aData.mBuffers[0].mNumberChannels = pvi->nChannels;
aData.mBuffers[0].mDataByteSize = data_size;
aData.mBuffers[0].mData = ptr;
MovieAudioExtractionFillBuffer(This->aSession, &frames, &aData, &flags);
}
TRACE("Got %i frames\n",(int)frames);
IMediaSample_SetActualDataLength(sample, frames * pvi->nBlockAlign);
IMediaSample_SetMediaTime(sample, &mStart, &mStop);
IMediaSample_SetTime(sample, &tStart, &tStop);
hr = OutputQueue_Receive(This->pAudio_Pin->queue, sample);
TRACE("Audio Delivered (%x)\n",hr);
audio_error:
if (sample)
IMediaSample_Release(sample);
}
else
TRACE("Audio Pin not connected or no Audio\n");
/* Deliver Video */
if (This->pVideo_Pin && QTVisualContextIsNewImageAvailable(This->vContext,0))
{
err = QTVisualContextCopyImageForTime(This->vContext, NULL, NULL, &pixelBuffer);
if (err == noErr)
{
int data_size=0;
BYTE* ptr;
IMediaSample *sample = NULL;
hr = BaseOutputPinImpl_GetDeliveryBuffer(&This->pVideo_Pin->pin, &sample, NULL, NULL, 0);
if (FAILED(hr))
{
ERR("Video: Unable to get delivery buffer (%x)\n", hr);
goto video_error;
}
data_size = IMediaSample_GetSize(sample);
if (data_size < This->outputSize)
{
ERR("Sample size is too small %d < %d\n", data_size, This->outputSize)
;
hr = E_FAIL;
goto video_error;
}
hr = IMediaSample_GetPointer(sample, &ptr);
if (FAILED(hr))
{
ERR("Video: Unable to get pointer to buffer (%x)\n", hr);
goto video_error;
}
hr = AccessPixelBufferPixels( pixelBuffer, ptr);
if (FAILED(hr))
{
ERR("Failed to access Pixels\n");
goto video_error;
}
IMediaSample_SetActualDataLength(sample, This->outputSize);
IMediaSample_SetMediaTime(sample, &mStart, &mStop);
IMediaSample_SetTime(sample, &tStart, &tStop);
hr = OutputQueue_Receive(This->pVideo_Pin->queue, sample);
TRACE("Video Delivered (%x)\n",hr);
video_error:
if (sample)
IMediaSample_Release(sample);
if (pixelBuffer)
CVPixelBufferRelease(pixelBuffer);
}
}
else
TRACE("No video to deliver\n");
This->movie_time = next_time;
LeaveCriticalSection(&This->csReceive);
} while (hr == S_OK);
This->state = State_Stopped;
if (This->pAudio_Pin)
OutputQueue_EOS(This->pAudio_Pin->queue);
if (This->pVideo_Pin)
OutputQueue_EOS(This->pVideo_Pin->queue);
return hr;
}
bool readSamples (int** destSamples, int numDestChannels, int startOffsetInDestBuffer,
int64 startSampleInFile, int numSamples)
{
JUCE_AUTORELEASEPOOL
checkThreadIsAttached();
bool ok = true;
while (numSamples > 0)
{
if (lastSampleRead != startSampleInFile)
{
TimeRecord time;
time.scale = (TimeScale) inputStreamDesc.mSampleRate;
time.base = 0;
time.value.hi = 0;
time.value.lo = (UInt32) startSampleInFile;
OSStatus err = MovieAudioExtractionSetProperty (extractor,
kQTPropertyClass_MovieAudioExtraction_Movie,
kQTMovieAudioExtractionMoviePropertyID_CurrentTime,
sizeof (time), &time);
if (err != noErr)
{
ok = false;
break;
}
}
int framesToDo = jmin (numSamples, (int) (bufferList->mBuffers[0].mDataByteSize / inputStreamDesc.mBytesPerFrame));
bufferList->mBuffers[0].mDataByteSize = inputStreamDesc.mBytesPerFrame * framesToDo;
UInt32 outFlags = 0;
UInt32 actualNumFrames = framesToDo;
OSStatus err = MovieAudioExtractionFillBuffer (extractor, &actualNumFrames, bufferList, &outFlags);
if (err != noErr)
{
ok = false;
break;
}
lastSampleRead = startSampleInFile + actualNumFrames;
const int samplesReceived = actualNumFrames;
for (int j = numDestChannels; --j >= 0;)
{
if (destSamples[j] != nullptr)
{
const short* src = ((const short*) bufferList->mBuffers[0].mData) + j;
for (int i = 0; i < samplesReceived; ++i)
{
destSamples[j][startOffsetInDestBuffer + i] = (*src << 16);
src += numChannels;
}
}
}
startOffsetInDestBuffer += samplesReceived;
startSampleInFile += samplesReceived;
numSamples -= samplesReceived;
if (((outFlags & kQTMovieAudioExtractionComplete) != 0 || samplesReceived == 0) && numSamples > 0)
{
for (int j = numDestChannels; --j >= 0;)
if (destSamples[j] != nullptr)
zeromem (destSamples[j] + startOffsetInDestBuffer, sizeof (int) * numSamples);
break;
}
}
detachThread();
return ok;
}
int QTImportFileHandle::Import(TrackFactory *trackFactory,
Track ***outTracks,
int *outNumTracks,
Tags *tags)
{
OSErr err = noErr;
MovieAudioExtractionRef maer = NULL;
int updateResult = eProgressSuccess;
sampleCount totSamples = (sampleCount) GetMovieDuration(mMovie);
sampleCount numSamples = 0;
Boolean discrete = true;
UInt32 quality = kQTAudioRenderQuality_Max;
AudioStreamBasicDescription desc;
UInt32 maxSampleSize;
UInt32 numchan;
UInt32 bufsize;
bool res = false;
CreateProgress();
do
{
err = MovieAudioExtractionBegin(mMovie, 0, &maer);
if (err != noErr) {
wxMessageBox(_("Unable to start QuickTime extraction"));
break;
}
err = MovieAudioExtractionSetProperty(maer,
kQTPropertyClass_MovieAudioExtraction_Audio,
kQTMovieAudioExtractionAudioPropertyID_RenderQuality,
sizeof(quality),
&quality);
if (err != noErr) {
wxMessageBox(_("Unable to set QuickTime render quality"));
break;
}
err = MovieAudioExtractionSetProperty(maer,
kQTPropertyClass_MovieAudioExtraction_Movie,
kQTMovieAudioExtractionMoviePropertyID_AllChannelsDiscrete,
sizeof(discrete),
&discrete);
if (err != noErr) {
wxMessageBox(_("Unable to set QuickTime discrete channels property"));
break;
}
err = MovieAudioExtractionGetProperty(maer,
kQTPropertyClass_MovieAudioExtraction_Audio,
kQTAudioPropertyID_MaxAudioSampleSize,
sizeof(maxSampleSize),
&maxSampleSize,
NULL);
if (err != noErr) {
wxMessageBox(_("Unable to get QuickTime sample size property"));
break;
}
err = MovieAudioExtractionGetProperty(maer,
kQTPropertyClass_MovieAudioExtraction_Audio,
kQTMovieAudioExtractionAudioPropertyID_AudioStreamBasicDescription,
sizeof(desc),
&desc,
NULL);
if (err != noErr) {
wxMessageBox(_("Unable to retrieve stream description"));
break;
}
numchan = desc.mChannelsPerFrame;
bufsize = 5 * desc.mSampleRate;
// determine sample format
sampleFormat format;
switch (maxSampleSize)
{
case 16:
format = int16Sample;
break;
case 24:
format = int24Sample;
break;
default:
format = floatSample;
break;
}
AudioBufferList *abl = (AudioBufferList *)
calloc(1, offsetof(AudioBufferList, mBuffers) + (sizeof(AudioBuffer) * numchan));
abl->mNumberBuffers = numchan;
WaveTrack **channels = new WaveTrack *[numchan];
int c;
for (c = 0; c < numchan; c++) {
abl->mBuffers[c].mNumberChannels = 1;
abl->mBuffers[c].mDataByteSize = sizeof(float) * bufsize;
abl->mBuffers[c].mData = malloc(abl->mBuffers[c].mDataByteSize);
channels[c] = trackFactory->NewWaveTrack(format);
channels[c]->SetRate(desc.mSampleRate);
if (numchan == 2) {
if (c == 0) {
channels[c]->SetChannel(Track::LeftChannel);
channels[c]->SetLinked(true);
}
else if (c == 1) {
channels[c]->SetChannel(Track::RightChannel);
}
}
}
do {
UInt32 flags = 0;
UInt32 numFrames = bufsize;
err = MovieAudioExtractionFillBuffer(maer,
&numFrames,
abl,
&flags);
if (err != noErr) {
wxMessageBox(_("Unable to get fill buffer"));
break;
}
for (c = 0; c < numchan; c++) {
channels[c]->Append((char *) abl->mBuffers[c].mData, floatSample, numFrames);
}
numSamples += numFrames;
updateResult = mProgress->Update((wxULongLong_t)numSamples,
(wxULongLong_t)totSamples);
if (numFrames == 0 || flags & kQTMovieAudioExtractionComplete) {
break;
}
} while (updateResult == eProgressSuccess);
res = (updateResult == eProgressSuccess && err == noErr);
if (res) {
for (c = 0; c < numchan; c++) {
channels[c]->Flush();
}
*outTracks = (Track **) channels;
*outNumTracks = numchan;
}
else {
for (c = 0; c < numchan; c++) {
delete channels[c];
}
delete [] channels;
}
for (c = 0; c < numchan; c++) {
free(abl->mBuffers[c].mData);
}
free(abl);
//
// Extract any metadata
//
if (res) {
AddMetadata(tags);
}
} while (false);
done:
if (maer) {
MovieAudioExtractionEnd(maer);
}
return (res ? eProgressSuccess : eProgressFailed);
}
QuickTimeFileReader::QuickTimeFileReader(FileSource source,
DecodeMode decodeMode,
CacheMode mode,
size_t targetRate,
ProgressReporter *reporter) :
CodedAudioFileReader(mode, targetRate),
m_source(source),
m_path(source.getLocalFilename()),
m_d(new D),
m_reporter(reporter),
m_cancelled(false),
m_completion(0),
m_decodeThread(0)
{
m_channelCount = 0;
m_fileRate = 0;
Profiler profiler("QuickTimeFileReader::QuickTimeFileReader", true);
SVDEBUG << "QuickTimeFileReader: path is \"" << m_path << "\"" << endl;
long QTversion;
#ifdef WIN32
InitializeQTML(0); // FIXME should check QT version
#else
m_d->err = Gestalt(gestaltQuickTime,&QTversion);
if ((m_d->err != noErr) || (QTversion < 0x07000000)) {
m_error = QString("Failed to find compatible version of QuickTime (version 7 or above required)");
return;
}
#endif
EnterMovies();
Handle dataRef;
OSType dataRefType;
// CFStringRef URLString = CFStringCreateWithCString
// (0, m_path.toLocal8Bit().data(), 0);
QByteArray ba = m_path.toLocal8Bit();
CFURLRef url = CFURLCreateFromFileSystemRepresentation
(kCFAllocatorDefault,
(const UInt8 *)ba.data(),
(CFIndex)ba.length(),
false);
// m_d->err = QTNewDataReferenceFromURLCFString
m_d->err = QTNewDataReferenceFromCFURL
(url, 0, &dataRef, &dataRefType);
if (m_d->err) {
m_error = QString("Error creating data reference for QuickTime decoder: code %1").arg(m_d->err);
return;
}
short fileID = movieInDataForkResID;
short flags = 0;
m_d->err = NewMovieFromDataRef
(&m_d->movie, flags, &fileID, dataRef, dataRefType);
DisposeHandle(dataRef);
if (m_d->err) {
m_error = QString("Error creating new movie for QuickTime decoder: code %1").arg(m_d->err);
return;
}
Boolean isProtected = 0;
Track aTrack = GetMovieIndTrackType
(m_d->movie, 1, SoundMediaType,
movieTrackMediaType | movieTrackEnabledOnly);
if (aTrack) {
Media aMedia = GetTrackMedia(aTrack); // get the track media
if (aMedia) {
MediaHandler mh = GetMediaHandler(aMedia); // get the media handler we can query
if (mh) {
m_d->err = QTGetComponentProperty(mh,
kQTPropertyClass_DRM,
kQTDRMPropertyID_IsProtected,
sizeof(Boolean), &isProtected,nil);
} else {
m_d->err = 1;
}
} else {
m_d->err = 1;
}
} else {
m_d->err = 1;
}
if (m_d->err && m_d->err != kQTPropertyNotSupportedErr) {
m_error = QString("Error checking for DRM in QuickTime decoder: code %1").arg(m_d->err);
return;
} else if (!m_d->err && isProtected) {
m_error = QString("File is protected with DRM");
return;
} else if (m_d->err == kQTPropertyNotSupportedErr && !isProtected) {
std::cerr << "QuickTime: File is not protected with DRM" << std::endl;
}
if (m_d->movie) {
SetMovieActive(m_d->movie, TRUE);
m_d->err = GetMoviesError();
if (m_d->err) {
m_error = QString("Error in QuickTime decoder activation: code %1").arg(m_d->err);
return;
}
} else {
m_error = QString("Error in QuickTime decoder: Movie object not valid");
return;
}
m_d->err = MovieAudioExtractionBegin
(m_d->movie, 0, &m_d->extractionSessionRef);
if (m_d->err) {
m_error = QString("Error in QuickTime decoder extraction init: code %1").arg(m_d->err);
return;
}
m_d->err = MovieAudioExtractionGetProperty
(m_d->extractionSessionRef,
kQTPropertyClass_MovieAudioExtraction_Audio, kQTMovieAudioExtractionAudioPropertyID_AudioStreamBasicDescription,
sizeof(m_d->asbd),
&m_d->asbd,
nil);
if (m_d->err) {
m_error = QString("Error in QuickTime decoder property get: code %1").arg(m_d->err);
return;
}
m_channelCount = m_d->asbd.mChannelsPerFrame;
m_fileRate = m_d->asbd.mSampleRate;
std::cerr << "QuickTime: " << m_channelCount << " channels, " << m_fileRate << " kHz" << std::endl;
m_d->asbd.mFormatFlags =
kAudioFormatFlagIsFloat |
kAudioFormatFlagIsPacked |
kAudioFormatFlagsNativeEndian;
m_d->asbd.mBitsPerChannel = sizeof(float) * 8;
m_d->asbd.mBytesPerFrame = sizeof(float) * m_d->asbd.mChannelsPerFrame;
m_d->asbd.mBytesPerPacket = m_d->asbd.mBytesPerFrame;
m_d->err = MovieAudioExtractionSetProperty
(m_d->extractionSessionRef,
kQTPropertyClass_MovieAudioExtraction_Audio,
kQTMovieAudioExtractionAudioPropertyID_AudioStreamBasicDescription,
sizeof(m_d->asbd),
&m_d->asbd);
if (m_d->err) {
m_error = QString("Error in QuickTime decoder property set: code %1").arg(m_d->err);
m_channelCount = 0;
return;
}
m_d->buffer.mNumberBuffers = 1;
m_d->buffer.mBuffers[0].mNumberChannels = m_channelCount;
m_d->buffer.mBuffers[0].mDataByteSize =
sizeof(float) * m_channelCount * m_d->blockSize;
m_d->data = new float[m_channelCount * m_d->blockSize];
m_d->buffer.mBuffers[0].mData = m_d->data;
initialiseDecodeCache();
if (decodeMode == DecodeAtOnce) {
if (m_reporter) {
connect(m_reporter, SIGNAL(cancelled()), this, SLOT(cancelled()));
m_reporter->setMessage
(tr("Decoding %1...").arg(QFileInfo(m_path).fileName()));
}
while (1) {
UInt32 framesRead = m_d->blockSize;
UInt32 extractionFlags = 0;
m_d->err = MovieAudioExtractionFillBuffer
(m_d->extractionSessionRef, &framesRead, &m_d->buffer,
&extractionFlags);
if (m_d->err) {
m_error = QString("Error in QuickTime decoding: code %1")
.arg(m_d->err);
break;
}
//!!! progress?
// std::cerr << "Read " << framesRead << " frames (block size " << m_d->blockSize << ")" << std::endl;
// QuickTime buffers are interleaved unless specified otherwise
addSamplesToDecodeCache(m_d->data, framesRead);
if (framesRead < m_d->blockSize) break;
}
finishDecodeCache();
endSerialised();
m_d->err = MovieAudioExtractionEnd(m_d->extractionSessionRef);
if (m_d->err) {
m_error = QString("Error ending QuickTime extraction session: code %1").arg(m_d->err);
}
m_completion = 100;
} else {
if (m_reporter) m_reporter->setProgress(100);
if (m_channelCount > 0) {
m_decodeThread = new DecodeThread(this);
m_decodeThread->start();
}
}
std::cerr << "QuickTimeFileReader::QuickTimeFileReader: frame count is now " << getFrameCount() << ", error is \"\"" << m_error << "\"" << std::endl;
}
