/*
Given a reference to the media that contains the sample data for a track,
calculate the static frame rate.
*/
OSErr MediaGetStaticFrameRate(Media inMovieMedia, double *outFPS)
{
*outFPS = 0;
/* get the number of samples in the media */
long sampleCount = GetMediaSampleCount(inMovieMedia);
OSErr err = GetMoviesError();
if (sampleCount && err == noErr)
{
/* find the media duration */
//Quicktime 7.0 code
//TimeValue64 duration = GetMediaDisplayDuration(inMovieMedia);
TimeValue64 duration = GetMediaDuration(inMovieMedia);
err = GetMoviesError();
if (err == noErr)
{
/* get the media time scale */
TimeValue64 timeScale = GetMediaTimeScale(inMovieMedia);
err = GetMoviesError();
if (err == noErr)
{
/* calculate the frame rate:
frame rate = (sample count * media time scale) / media duration
*/
*outFPS = (double)sampleCount * (double)timeScale / (double)duration;
}
}
}
return err;
}
/*
call-seq: frame_count() -> count
Returns the number of frames in the track.
*/
static VALUE track_frame_count(VALUE obj)
{
return INT2NUM(GetMediaSampleCount(TRACK_MEDIA(obj)));
}
static HRESULT QT_Process_Video_Track(QTSplitter* filter, Track trk)
{
AM_MEDIA_TYPE amt;
VIDEOINFOHEADER * pvi;
PIN_INFO piOutput;
HRESULT hr = S_OK;
OSErr err;
static const WCHAR szwVideoOut[] = {'V','i','d','e','o',0};
CFMutableDictionaryRef pixelBufferOptions = NULL;
CFMutableDictionaryRef visualContextOptions = NULL;
CFNumberRef n = NULL;
int t;
DWORD outputWidth, outputHeight, outputDepth;
Fixed trackWidth, trackHeight;
Media videoMedia;
long sampleCount;
TimeValue64 duration;
TimeScale timeScale;
ZeroMemory(&amt, sizeof(amt));
amt.formattype = FORMAT_VideoInfo;
amt.majortype = MEDIATYPE_Video;
amt.subtype = MEDIASUBTYPE_RGB24;
GetTrackDimensions(trk, &trackWidth, &trackHeight);
outputDepth = 3;
outputWidth = Fix2Long(trackWidth);
outputHeight = Fix2Long(trackHeight);
TRACE("Width %i Height %i\n",outputWidth, outputHeight);
amt.cbFormat = sizeof(VIDEOINFOHEADER);
amt.pbFormat = CoTaskMemAlloc(amt.cbFormat);
ZeroMemory(amt.pbFormat, amt.cbFormat);
pvi = (VIDEOINFOHEADER *)amt.pbFormat;
pvi->bmiHeader.biSize = sizeof (BITMAPINFOHEADER);
pvi->bmiHeader.biWidth = outputWidth;
pvi->bmiHeader.biHeight = outputHeight;
pvi->bmiHeader.biPlanes = 1;
pvi->bmiHeader.biBitCount = 24;
pvi->bmiHeader.biCompression = BI_RGB;
pvi->bmiHeader.biSizeImage = outputWidth * outputHeight * outputDepth;
filter->outputSize = pvi->bmiHeader.biSizeImage;
amt.lSampleSize = 0;
pixelBufferOptions = CFDictionaryCreateMutable(NULL, 0, &kCFTypeDictionaryKeyCallBacks, &kCFTypeDictionaryValueCallBacks);
t = k32ARGBPixelFormat;
n = CFNumberCreate(NULL, kCFNumberIntType, &t);
CFDictionaryAddValue(pixelBufferOptions, kCVPixelBufferPixelFormatTypeKey, n);
CFRelease(n);
n = CFNumberCreate(NULL, kCFNumberIntType, &outputWidth);
CFDictionaryAddValue(pixelBufferOptions, kCVPixelBufferWidthKey, n);
CFRelease(n);
n = CFNumberCreate(NULL, kCFNumberIntType, &outputHeight);
CFDictionaryAddValue(pixelBufferOptions, kCVPixelBufferHeightKey, n);
CFRelease(n);
t = 16;
n = CFNumberCreate(NULL, kCFNumberIntType, &t);
CFDictionaryAddValue(pixelBufferOptions, kCVPixelBufferBytesPerRowAlignmentKey, n);
CFRelease(n);
visualContextOptions = CFDictionaryCreateMutable(NULL, 0, &kCFTypeDictionaryKeyCallBacks, &kCFTypeDictionaryValueCallBacks);
CFDictionarySetValue(visualContextOptions, kQTVisualContextPixelBufferAttributesKey, pixelBufferOptions);
err = QTPixelBufferContextCreate(NULL, visualContextOptions,&filter->vContext);
CFRelease(pixelBufferOptions);
CFRelease(visualContextOptions);
if (err != noErr)
{
ERR("Failed to create Visual Context\n");
return E_FAIL;
}
err = SetMovieVisualContext(filter->pQTMovie, filter->vContext);
if (err != noErr)
{
ERR("Failed to set Visual Context\n");
return E_FAIL;
}
videoMedia = GetTrackMedia(trk);
sampleCount = GetMediaSampleCount(videoMedia);
timeScale = GetMediaTimeScale(videoMedia);
duration = GetMediaDisplayDuration(videoMedia);
pvi->AvgTimePerFrame = (100000.0 * sampleCount * timeScale) / duration;
piOutput.dir = PINDIR_OUTPUT;
piOutput.pFilter = &filter->filter.IBaseFilter_iface;
lstrcpyW(piOutput.achName,szwVideoOut);
hr = QT_AddPin(filter, &piOutput, &amt, TRUE);
if (FAILED(hr))
ERR("Failed to add Video Track\n");
else
TRACE("Video Pin %p\n",filter->pVideo_Pin);
return hr;
}
QTAudioReader (InputStream* const input_, const int trackNum_)
: AudioFormatReader (input_, TRANS (quickTimeFormatName)),
ok (false),
movie (0),
trackNum (trackNum_),
lastSampleRead (0),
lastThreadId (0),
extractor (0),
dataHandle (0)
{
JUCE_AUTORELEASEPOOL
bufferList.calloc (256, 1);
#if JUCE_WINDOWS
if (InitializeQTML (0) != noErr)
return;
#endif
if (EnterMovies() != noErr)
return;
bool opened = juce_OpenQuickTimeMovieFromStream (input_, movie, dataHandle);
if (! opened)
return;
{
const int numTracks = GetMovieTrackCount (movie);
int trackCount = 0;
for (int i = 1; i <= numTracks; ++i)
{
track = GetMovieIndTrack (movie, i);
media = GetTrackMedia (track);
OSType mediaType;
GetMediaHandlerDescription (media, &mediaType, 0, 0);
if (mediaType == SoundMediaType
&& trackCount++ == trackNum_)
{
ok = true;
break;
}
}
}
if (! ok)
return;
ok = false;
lengthInSamples = GetMediaDecodeDuration (media);
usesFloatingPointData = false;
samplesPerFrame = (int) (GetMediaDecodeDuration (media) / GetMediaSampleCount (media));
trackUnitsPerFrame = GetMovieTimeScale (movie) * samplesPerFrame
/ GetMediaTimeScale (media);
OSStatus err = MovieAudioExtractionBegin (movie, 0, &extractor);
unsigned long output_layout_size;
err = MovieAudioExtractionGetPropertyInfo (extractor,
kQTPropertyClass_MovieAudioExtraction_Audio,
kQTMovieAudioExtractionAudioPropertyID_AudioChannelLayout,
0, &output_layout_size, 0);
if (err != noErr)
return;
HeapBlock <AudioChannelLayout> qt_audio_channel_layout;
qt_audio_channel_layout.calloc (output_layout_size, 1);
err = MovieAudioExtractionGetProperty (extractor,
kQTPropertyClass_MovieAudioExtraction_Audio,
kQTMovieAudioExtractionAudioPropertyID_AudioChannelLayout,
output_layout_size, qt_audio_channel_layout, 0);
qt_audio_channel_layout[0].mChannelLayoutTag = kAudioChannelLayoutTag_Stereo;
err = MovieAudioExtractionSetProperty (extractor,
kQTPropertyClass_MovieAudioExtraction_Audio,
kQTMovieAudioExtractionAudioPropertyID_AudioChannelLayout,
output_layout_size,
qt_audio_channel_layout);
err = MovieAudioExtractionGetProperty (extractor,
kQTPropertyClass_MovieAudioExtraction_Audio,
kQTMovieAudioExtractionAudioPropertyID_AudioStreamBasicDescription,
sizeof (inputStreamDesc),
&inputStreamDesc, 0);
if (err != noErr)
return;
inputStreamDesc.mFormatFlags = kAudioFormatFlagIsSignedInteger
| kAudioFormatFlagIsPacked
| kAudioFormatFlagsNativeEndian;
inputStreamDesc.mBitsPerChannel = sizeof (SInt16) * 8;
inputStreamDesc.mChannelsPerFrame = jmin ((UInt32) 2, inputStreamDesc.mChannelsPerFrame);
inputStreamDesc.mBytesPerFrame = sizeof (SInt16) * inputStreamDesc.mChannelsPerFrame;
inputStreamDesc.mBytesPerPacket = inputStreamDesc.mBytesPerFrame;
err = MovieAudioExtractionSetProperty (extractor,
kQTPropertyClass_MovieAudioExtraction_Audio,
kQTMovieAudioExtractionAudioPropertyID_AudioStreamBasicDescription,
sizeof (inputStreamDesc),
&inputStreamDesc);
if (err != noErr)
return;
Boolean allChannelsDiscrete = false;
err = MovieAudioExtractionSetProperty (extractor,
kQTPropertyClass_MovieAudioExtraction_Movie,
kQTMovieAudioExtractionMoviePropertyID_AllChannelsDiscrete,
sizeof (allChannelsDiscrete),
&allChannelsDiscrete);
if (err != noErr)
return;
bufferList->mNumberBuffers = 1;
bufferList->mBuffers[0].mNumberChannels = inputStreamDesc.mChannelsPerFrame;
bufferList->mBuffers[0].mDataByteSize = jmax ((UInt32) 4096, (UInt32) (samplesPerFrame * inputStreamDesc.mBytesPerFrame) + 16);
dataBuffer.malloc (bufferList->mBuffers[0].mDataByteSize);
bufferList->mBuffers[0].mData = dataBuffer;
sampleRate = inputStreamDesc.mSampleRate;
bitsPerSample = 16;
numChannels = inputStreamDesc.mChannelsPerFrame;
detachThread();
ok = true;
}
float quicktime_player::get_fps() {
long sampleCount = GetMediaSampleCount(m->media);
TimeScale timeScale = GetMediaTimeScale(m->media);
TimeValue duration = GetMediaDuration(m->media);
return float(sampleCount) * timeScale / duration;
}
int quicktime_player::get_frame_count() {
return GetMediaSampleCount(m->media);
}
