//--------------------------------------------------------------------
bool ofQuickTimeGrabber::initGrabber(int w, int h){
//---------------------------------
#ifdef OF_VIDEO_CAPTURE_QUICKTIME
//---------------------------------
//---------------------------------- 1 - open the sequence grabber
if( !qtInitSeqGrabber() ){
ofLogError("ofQuickTimeGrabber") << "initGrabber(): unable to initialize the seq grabber";
return false;
}
//---------------------------------- 2 - set the dimensions
//width = w;
//height = h;
MacSetRect(&videoRect, 0, 0, w, h);
//---------------------------------- 3 - buffer allocation
// Create a buffer big enough to hold the video data,
// make sure the pointer is 32-byte aligned.
// also the rgb image that people will grab
offscreenGWorldPixels = (unsigned char*)malloc(4 * w * h + 32);
pixels.allocate(w, h, OF_IMAGE_COLOR);
#if defined(TARGET_OSX) && defined(__BIG_ENDIAN__)
QTNewGWorldFromPtr (&(videogworld), k32ARGBPixelFormat, &(videoRect), NULL, NULL, 0, (offscreenGWorldPixels), 4 * w);
#else
QTNewGWorldFromPtr (&(videogworld), k24RGBPixelFormat, &(videoRect), NULL, NULL, 0, (pixels.getPixels()), 3 * w);
#endif
LockPixels(GetGWorldPixMap(videogworld));
SetGWorld (videogworld, NULL);
SGSetGWorld(gSeqGrabber, videogworld, nil);
//---------------------------------- 4 - device selection
bool didWeChooseADevice = bChooseDevice;
bool deviceIsSelected = false;
//if we have a device selected then try first to setup
//that device
if(didWeChooseADevice){
deviceIsSelected = qtSelectDevice(deviceID, true);
if(!deviceIsSelected && bVerbose)
ofLogError("ofQuickTimeGrabber") << "initGrabber(): unable to open device[" << deviceID << "], will attempt other devices";
}
//if we couldn't select our required device
//or we aren't specifiying a device to setup
//then lets try to setup ANY device!
if(deviceIsSelected == false){
//lets list available devices
listDevices();
setDeviceID(0);
deviceIsSelected = qtSelectDevice(deviceID, false);
}
//if we still haven't been able to setup a device
//we should error and stop!
if( deviceIsSelected == false){
goto bail;
}
//---------------------------------- 5 - final initialization steps
OSStatus err;
err = SGSetChannelUsage(gVideoChannel,seqGrabPreview);
if ( err != noErr ) goto bail;
//----------------- callback method for notifying new frame
err = SGSetChannelRefCon(gVideoChannel, (long)&bHavePixelsChanged );
if(!err) {
VideoBottles vb;
/* get the current bottlenecks */
vb.procCount = 9;
err = SGGetVideoBottlenecks(gVideoChannel, &vb);
if (!err) {
myGrabCompleteProc = NewSGGrabCompleteBottleUPP(frameIsGrabbedProc);
vb.grabCompleteProc = myGrabCompleteProc;
/* add our GrabFrameComplete function */
err = SGSetVideoBottlenecks(gVideoChannel, &vb);
}
}
err = SGSetChannelBounds(gVideoChannel, &videoRect);
if ( err != noErr ) goto bail;
err = SGPrepare(gSeqGrabber, true, false); //theo swapped so preview is true and capture is false
if ( err != noErr ) goto bail;
err = SGStartPreview(gSeqGrabber);
if ( err != noErr ) goto bail;
bGrabberInited = true;
loadSettings();
if( attemptFramerate >= 0 ){
err = SGSetFrameRate(gVideoChannel, IntToFixed(attemptFramerate) );
if ( err != noErr ){
ofLogError("ofQuickTimeGrabber") << "initGrabber: couldn't setting framerate to " << attemptFramerate << ": OSStatus " << err;
}
}
ofLogNotice("ofQuickTimeGrabber") << " inited grabbed ";
ofLogNotice("ofQuickTimeGrabber") << "-------------------------------------";
// we are done
return true;
//--------------------- (bail) something's wrong -----
bail:
ofLogError("ofQuickTimeGrabber") << "***** ofQuickTimeGrabber error *****";
ofLogError("ofQuickTimeGrabber") << "------------------------------------";
//if we don't close this - it messes up the next device!
if(bSgInited) qtCloseSeqGrabber();
bGrabberInited = false;
return false;
//---------------------------------
#else
//---------------------------------
return false;
//---------------------------------
#endif
//---------------------------------
}
// Create the Sequence Grabber Video Channel
void QuicktimeLiveImageStream::createSequenceGrabberVideoChannel()
{
// Check capability and setting of Sequence Grabber
GDHandle origDevice;
CGrafPtr origPort;
// Create GWorld
GetGWorld (&origPort, &origDevice);
SetGWorld (m_gw, NULL); // set current graphics port to offscreen
// Setup
// Get a video channel
ComponentResult result = SGNewChannel (m_gSeqGrabber, VideoMediaType, &m_gVideoChannel);
if ((m_gVideoChannel != nil) && (result == noErr))
{
result = SGInitChannel(m_gVideoChannel, m_gSeqGrabber);
Rect gActiveVideoRect;
// Usage
if (g_s_use_sg_record)
result = SGSetChannelUsage (m_gVideoChannel, seqGrabRecord | seqGrabLowLatencyCapture);
else
{
result = SGSetChannelUsage (m_gVideoChannel, seqGrabPreview);
}
// result = SGSetUseScreenBuffer(m_gVideoChannel, FALSE);
// Set
OSG_DEBUG << "Setting up vdig from input prefs" << std::endl;
result = SGSetChannelDevice ( m_gVideoChannel, m_videoDeviceIDStr);
result = SGSetChannelDeviceInput( m_gVideoChannel, m_videoDeviceInputID);
// result = SGSetChannelPlayFlags ( m_gVideoChannel, channelPlayFast | channelPlayHighQuality | channelPlayAllData);
result = SGSetChannelPlayFlags ( m_gVideoChannel, channelPlayFast );
VideoDigitizerComponent vdig = SGGetVideoDigitizerComponent(m_gVideoChannel);
VideoDigitizerError vid_err;
vid_err = VDSetInputStandard (vdig, palIn);
OSG_DEBUG << "Setup vdig from input prefs:" << std::endl;
print_video_component_capability(vdig);
result = SGVideoDigitizerChanged( m_gVideoChannel);
result = SGGetSrcVideoBounds ( m_gVideoChannel, &gActiveVideoRect);
result = SGSetChannelBounds ( m_gVideoChannel, &gActiveVideoRect);
result = SGChangedSource (m_gSeqGrabber, m_gVideoChannel);
Fixed frame_rate;
result = SGGetFrameRate (m_gVideoChannel, &frame_rate);
result = SGSetFrameRate (m_gVideoChannel, 100);
//
// Sound
/*
long sound_id;
Str255 sound_driver_name;
char* sound_driver_name_cstr;
vid_err = VDGetSoundInputSource(vdig, (long)m_videoDeviceInputID, &sound_id);
vid_err = VDGetSoundInputDriver(vdig, sound_driver_name);
sound_driver_name_cstr = pstr_printable(sound_driver_name);
OSG_DEBUG << "vdig sound driver name :" << sound_driver_name_cstr << std::endl;
OSG_DEBUG << "vdig sound driver id :" << sound_id << std::endl;
*/
}
else
{
OSG_FATAL << "Could not create SGNewChannel for Video Channel" << std::endl;
}
// Set GWorld back
SetGWorld(origPort, origDevice);
}
// ######################################################################
QuickTimeGrabber::Impl::Impl(const Dims& dims)
:
itsSeqGrab(0, &CloseComponent),
itsSGChanVideo(&itsSeqGrab.it),
itsDrawSeq(0),
itsTimeScale(0),
itsTimeBase(0),
itsQueuedFrameCount(0),
itsSkipFrameCount(0),
itsSkipFrameCountTotal(0),
itsPrevTime(0),
itsFrameCount(0),
itsGWorld(0),
itsGotFrame(false),
itsCurrentImage(),
itsErrorMsg(),
itsStreamStarted(false)
{
OSErr err;
EnterMovies();
// open the default sequence grabber
itsSeqGrab.it = OpenDefaultComponent(SeqGrabComponentType, 0);
if (itsSeqGrab.it == NULL)
LFATAL("OpenDefaultComponent() failed");
// initialize the default sequence grabber component
if (noErr != (err = SGInitialize(itsSeqGrab.it)))
LFATAL("SGInitialize() failed (err=%ld)", (long) err);
Rect scaleRect;
MacSetRect(&scaleRect, 0, 0, dims.w(), dims.h());
ASSERT(itsGWorld == 0);
QTNewGWorld(&itsGWorld,
k32ARGBPixelFormat, &scaleRect,
NULL, NULL,
kNativeEndianPixMap);
// set its graphics world
if (noErr != (err = SGSetGWorld(itsSeqGrab.it, itsGWorld, NULL)))
LFATAL("SGSetGWorld() failed (err=%ld)", (long) err);
// specify the destination data reference for a record operation
// tell it we're not making a movie if the flag seqGrabDontMakeMovie
// is used, the sequence grabber still calls your data function, but
// does not write any data to the movie file writeType will always
// be set to seqGrabWriteAppend
if (noErr !=
(err = SGSetDataRef(itsSeqGrab.it, 0, 0,
seqGrabDontMakeMovie | seqGrabDataProcIsInterruptSafe)))
LFATAL("SGSetDataRef() failed (err=%ld)", (long) err);
Impl::SGChannelHolder sgchanSound(&itsSeqGrab.it);
if (noErr != (err = SGNewChannel(itsSeqGrab.it,
VideoMediaType, &itsSGChanVideo.it)))
LFATAL("SGNewChannel(video) failed (err=%ld)", (long) err);
if (noErr != (err = SGNewChannel(itsSeqGrab.it,
SoundMediaType, &sgchanSound.it)))
{
// don't care if we couldn't get a sound channel
sgchanSound.it = NULL;
LERROR("SGNewChannel(audio) failed (err=%ld)", (long) err);
}
// get the active rectangle
Rect srcBounds;
if (noErr != (err = SGGetSrcVideoBounds(itsSGChanVideo.it, &srcBounds)))
LFATAL("SGGetSrcVideoBounds() failed (err=%ld)", (long) err);
// we always want all the source
setVideoChannelBounds(itsSGChanVideo.it, &srcBounds, &srcBounds);
// set usage for new video channel to avoid playthrough
// note we don't set seqGrabPlayDuringRecord
if (noErr != (err = SGSetChannelUsage(itsSGChanVideo.it,
seqGrabRecord |
seqGrabLowLatencyCapture |
seqGrabAlwaysUseTimeBase)))
LFATAL("SGSetChannelUsage(video) failed (err=%ld)", (long) err);
if (noErr != (err = SGSetChannelUsage(sgchanSound.it, seqGrabRecord |
//seqGrabPlayDuringRecord |
seqGrabLowLatencyCapture |
seqGrabAlwaysUseTimeBase)))
LERROR("SGSetChannelUsage(audio) failed (err=%ld)", (long) err);
// specify a sequence grabber data function
if (noErr != (err = SGSetDataProc(itsSeqGrab.it,
NewSGDataUPP(Impl::grabDataProc),
(long)(this))))
LFATAL("SGSetDataProc() failed (err=%ld)", (long) err);
SGSetChannelRefCon(itsSGChanVideo.it, (long)(this));
// set up the video bottlenecks so we can get our queued frame count
VideoBottles vb = { 0 };
if (noErr != (err = SGGetVideoBottlenecks(itsSGChanVideo.it, &vb)))
LFATAL("SGGetVideoBottlenecks() failed (err=%ld)", (long) err);
vb.procCount = 9; // there are 9 bottleneck procs; this must be filled in
vb.grabCompressCompleteProc =
NewSGGrabCompressCompleteBottleUPP
(Impl::grabCompressCompleteBottle);
if (noErr != (err = SGSetVideoBottlenecks(itsSGChanVideo.it, &vb)))
LFATAL("SGSetVideoBottlenecks() failed (err=%ld)", (long) err);
SGSetFrameRate(itsSGChanVideo.it, FixRatio(30, 1));
}
