//--------------------------------------------------------------------
bool ofVideoGrabber::initGrabber(int w, int h, bool setUseTexture){
bUseTexture = setUseTexture;
//---------------------------------
#ifdef OF_VIDEO_CAPTURE_QUICKTIME
//---------------------------------
//---------------------------------- 1 - open the sequence grabber
if( !qtInitSeqGrabber() ){
ofLog(OF_LOG_ERROR, "error: unable to initialize the seq grabber");
return false;
}
//---------------------------------- 2 - set the dimensions
width = w;
height = h;
MacSetRect(&videoRect, 0, 0, width, height);
//---------------------------------- 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 * width * height + 32);
pixels = new unsigned char[width*height*3];
QTNewGWorldFromPtr (&videogworld, k32ARGBPixelFormat, &videoRect, NULL, NULL, 0, offscreenGWorldPixels, 4 * width);
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) ofLog(OF_LOG_WARNING, "unable to open device[%i] - will attempt other devices", deviceID);
}
//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;
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();
ofLog(OF_LOG_NOTICE,"end setup ofVideoGrabber");
ofLog(OF_LOG_NOTICE,"-------------------------------------\n");
//---------------------------------- 6 - setup texture if needed
if (bUseTexture){
// create the texture, set the pixels to black and
// upload them to the texture (so at least we see nothing black the callback)
tex.allocate(width,height,GL_RGB);
memset(pixels, 0, width*height*3);
tex.loadData(pixels, width, height, GL_RGB);
}
// we are done
return true;
//--------------------- (bail) something's wrong -----
bail:
ofLog(OF_LOG_ERROR, "***** ofVideoGrabber error *****");
ofLog(OF_LOG_ERROR, "-------------------------------------\n");
//if we don't close this - it messes up the next device!
if(bSgInited) qtCloseSeqGrabber();
bGrabberInited = false;
return false;
//---------------------------------
#endif
//---------------------------------
//---------------------------------
#ifdef OF_VIDEO_CAPTURE_DIRECTSHOW
//---------------------------------
if (bChooseDevice){
device = deviceID;
ofLog(OF_LOG_NOTICE, "choosing %i", deviceID);
} else {
device = 0;
}
width = w;
height = h;
bGrabberInited = false;
bool bOk = VI.setupDevice(device, width, height);
int ourRequestedWidth = width;
int ourRequestedHeight = height;
if (bOk == true){
bGrabberInited = true;
width = VI.getWidth(device);
height = VI.getHeight(device);
if (width == ourRequestedWidth && height == ourRequestedHeight){
bDoWeNeedToResize = false;
} else {
bDoWeNeedToResize = true;
width = ourRequestedWidth;
height = ourRequestedHeight;
}
pixels = new unsigned char[width * height * 3];
if (bUseTexture){
// create the texture, set the pixels to black and
// upload them to the texture (so at least we see nothing black the callback)
tex.allocate(width,height,GL_RGB);
memset(pixels, 0, width*height*3);
tex.loadData(pixels, width, height, GL_RGB);
}
return true;
} else {
ofLog(OF_LOG_ERROR, "error allocating a video device");
ofLog(OF_LOG_ERROR, "please check your camera with AMCAP or other software");
bGrabberInited = false;
return false;
}
//---------------------------------
#endif
//---------------------------------
//---------------------------------
#ifdef OF_VIDEO_CAPTURE_UNICAP
//--------------------------------
if( !bGrabberInited ){
if ( !bChooseDevice ){
deviceID = 0;
}
width = w;
height = h;
pixels = new unsigned char[width * height * 3];
if (bUseTexture){
// create the texture, set the pixels to black and
// upload them to the texture (so at least we see nothing black the callback)
tex.allocate(width,height,GL_RGB);
memset(pixels, 0, width*height*3);
tex.loadData(pixels, width, height, GL_RGB);
}
bGrabberInited = ucGrabber.open_device (deviceID);
if( bGrabberInited ){
ofLog(OF_LOG_NOTICE, "choosing device %i: %s", deviceID,ucGrabber.device_identifier());
ucGrabber.set_format(w,h);
ucGrabber.start_capture();
}
}
return bGrabberInited;
//---------------------------------
#endif
//---------------------------------
//---------------------------------
#ifdef OF_VIDEO_CAPTURE_GSTREAMER
//--------------------------------
if(gstUtils.initGrabber(w,h)){
if ( !bChooseDevice ){
deviceID = 0;
}
width = w;
height = h;
if (bUseTexture){
// create the texture, set the pixels to black and
// upload them to the texture (so at least we see nothing black the callback)
tex.allocate(width,height,GL_RGB);
tex.loadData(gstUtils.getPixels(), width, height, GL_RGB);
}
bGrabberInited = true;
ofLog(OF_LOG_VERBOSE, "ofVideoGrabber: initied");
}else{
bGrabberInited = false;
ofLog(OF_LOG_ERROR, "ofVideoGrabber: couldn't init");
}
return bGrabberInited;
//---------------------------------
#endif
//---------------------------------
//---------------------------------
#ifdef OF_VIDEO_CAPTURE_V4L
//--------------------------------
if (bChooseDevice){
device = deviceID;
} else {
device = 0;
}
sprintf(dev_name, "/dev/video%i", device);
ofLog(OF_LOG_NOTICE, "choosing device %s",dev_name);
bool bOk = initV4L(w, h, dev_name);
if (bOk == true){
bV4LGrabberInited = true;
width = getV4L_Width();
height = getV4L_Height();
pixels = new unsigned char[width * height * 3];
if (bUseTexture){
// create the texture, set the pixels to black and
// upload them to the texture (so at least we see nothing black the callback)
tex.allocate(width,height,GL_RGB);
//memset(pixels, 0, width*height*3);
//tex.loadData(pixels, width, height, GL_RGB);
}
ofLog(OF_LOG_NOTICE, "success allocating a video device ");
return true;
} else {
ofLog(OF_LOG_ERROR, "error allocating a video device");
ofLog(OF_LOG_ERROR, "please check your camera and verify that your driver is correctly installed.");
return false;
} //---------------------------------
//---------------------------------
#endif
//---------------------------------
}
//--------------------------------------------------------------------
vector<ofVideoDevice> ofQuickTimeGrabber::listDevices(){
vector <ofVideoDevice> devices;
//---------------------------------
#ifdef OF_VIDEO_CAPTURE_QUICKTIME
//---------------------------------
bool bNeedToInitGrabberFirst = false;
if (!bSgInited) bNeedToInitGrabberFirst = true;
//if we need to initialize the grabbing component then do it
if( bNeedToInitGrabberFirst ){
if( !qtInitSeqGrabber() ){
return devices;
}
}
ofLogNotice("ofQuickTimeGrabber") << "-------------------------------------";
/*
//input selection stuff (ie multiple webcams)
//from http://developer.apple.com/samplecode/SGDevices/listing13.html
//and originally http://lists.apple.com/archives/QuickTime-API/2008/Jan/msg00178.html
*/
SGDeviceList deviceList;
SGGetChannelDeviceList (gVideoChannel, sgDeviceListIncludeInputs, &deviceList);
unsigned char pascalName[64];
unsigned char pascalNameInput[64];
//this is our new way of enumerating devices
//quicktime can have multiple capture 'inputs' on the same capture 'device'
//ie the USB Video Class Video 'device' - can have multiple usb webcams attached on what QT calls 'inputs'
//The isight for example will show up as:
//USB Video Class Video - Built-in iSight ('input' 1 of the USB Video Class Video 'device')
//Where as another webcam also plugged whill show up as
//USB Video Class Video - Philips SPC 1000NC Webcam ('input' 2 of the USB Video Class Video 'device')
//this means our the device ID we use for selection has to count both capture 'devices' and their 'inputs'
//this needs to be the same in our init grabber method so that we select the device we ask for
int deviceCount = 0;
ofLogNotice("ofQuickTimeGrabber") << "listing available capture devices";
for(int i = 0 ; i < (*deviceList)->count ; ++i)
{
SGDeviceName nameRec;
nameRec = (*deviceList)->entry[i];
SGDeviceInputList deviceInputList = nameRec.inputs;
int numInputs = 0;
if( deviceInputList ) numInputs = ((*deviceInputList)->count);
memcpy(pascalName, (*deviceList)->entry[i].name, sizeof(char) * 64);
//this means we can use the capture method
if(nameRec.flags != sgDeviceNameFlagDeviceUnavailable){
//if we have a capture 'device' (qt's word not mine - I would prefer 'system' ) that is ready to be used
//we go through its inputs to list all physical devices - as there could be more than one!
for(int j = 0; j < numInputs; j++){
//if our 'device' has inputs we get their names here
if( deviceInputList ){
SGDeviceInputName inputNameRec = (*deviceInputList)->entry[j];
memcpy(pascalNameInput, inputNameRec.name, sizeof(char) * 64);
}
ofLogNotice() << "device [" << deviceCount << "] " << p2cstr(pascalName) << " - " << p2cstr(pascalNameInput);
ofVideoDevice vd;
vd.id = deviceCount;
vd.deviceName = p2cstr(pascalName);
vd.bAvailable = true;
devices.push_back(vd);
//we count this way as we need to be able to distinguish multiple inputs as devices
deviceCount++;
}
}else{
ofLogNotice("ofQuickTimeGrabber") << "(unavailable) device [" << deviceCount << "] " << p2cstr(pascalName);
ofVideoDevice vd;
vd.id = deviceCount;
vd.deviceName = p2cstr(pascalName);
vd.bAvailable = false;
devices.push_back(vd);
deviceCount++;
}
}
ofLogNotice("ofQuickTimeGrabber") << "-------------------------------------";
//if we initialized the grabbing component then close it
if( bNeedToInitGrabberFirst ){
qtCloseSeqGrabber();
}
//---------------------------------
#endif
//---------------------------------
return devices;
}
//--------------------------------------------------------------------
void ofVideoGrabber::listDevices(){
//---------------------------------
#ifdef OF_VIDEO_CAPTURE_QUICKTIME
//---------------------------------
bool bNeedToInitGrabberFirst = false;
if (!bSgInited) bNeedToInitGrabberFirst = true;
//if we need to initialize the grabbing component then do it
if( bNeedToInitGrabberFirst ){
if( !qtInitSeqGrabber() ){
return;
}
}
printf("-------------------------------------");
/*
//input selection stuff (ie multiple webcams)
//from http://developer.apple.com/samplecode/SGDevices/listing13.html
//and originally http://lists.apple.com/archives/QuickTime-API/2008/Jan/msg00178.html
*/
SGDeviceList deviceList;
SGGetChannelDeviceList (gVideoChannel, sgDeviceListIncludeInputs, &deviceList);
unsigned char pascalName[256];
unsigned char pascalNameInput[256];
//this is our new way of enumerating devices
//quicktime can have multiple capture 'inputs' on the same capture 'device'
//ie the USB Video Class Video 'device' - can have multiple usb webcams attached on what QT calls 'inputs'
//The isight for example will show up as:
//USB Video Class Video - Built-in iSight ('input' 1 of the USB Video Class Video 'device')
//Where as another webcam also plugged whill show up as
//USB Video Class Video - Philips SPC 1000NC Webcam ('input' 2 of the USB Video Class Video 'device')
//this means our the device ID we use for selection has to count both capture 'devices' and their 'inputs'
//this needs to be the same in our init grabber method so that we select the device we ask for
int deviceCount = 0;
ofLog(OF_LOG_NOTICE, "listing available capture devices");
for(int i = 0 ; i < (*deviceList)->count ; ++i)
{
SGDeviceName nameRec;
nameRec = (*deviceList)->entry[i];
SGDeviceInputList deviceInputList = nameRec.inputs;
int numInputs = 0;
if( deviceInputList ) numInputs = ((*deviceInputList)->count);
memcpy(pascalName, (*deviceList)->entry[i].name, sizeof(char) * 256);
//this means we can use the capture method
if(nameRec.flags != sgDeviceNameFlagDeviceUnavailable){
//if we have a capture 'device' (qt's word not mine - I would prefer 'system' ) that is ready to be used
//we go through its inputs to list all physical devices - as there could be more than one!
for(int j = 0; j < numInputs; j++){
//if our 'device' has inputs we get their names here
if( deviceInputList ){
SGDeviceInputName inputNameRec = (*deviceInputList)->entry[j];
memcpy(pascalNameInput, inputNameRec.name, sizeof(char) * 256);
}
printf( "device[%i] %s - %s", deviceCount, p2cstr(pascalName), p2cstr(pascalNameInput) );
//we count this way as we need to be able to distinguish multiple inputs as devices
deviceCount++;
}
}else{
printf( "(unavailable) device[%i] %s", deviceCount, p2cstr(pascalName) );
deviceCount++;
}
}
printf( "-------------------------------------");
//if we initialized the grabbing component then close it
if( bNeedToInitGrabberFirst ){
qtCloseSeqGrabber();
}
//---------------------------------
#endif
//---------------------------------
//---------------------------------
#ifdef OF_VIDEO_CAPTURE_DIRECTSHOW
//---------------------------------
ofLog(OF_LOG_NOTICE, "---");
VI.listDevices();
ofLog(OF_LOG_NOTICE, "---");
//---------------------------------
#endif
//---------------------------------
//---------------------------------
#ifdef OF_VIDEO_CAPTURE_UNICAP
//--------------------------------
ucGrabber.listUCDevices();
//---------------------------------
#endif
//---------------------------------
//---------------------------------
#ifdef OF_VIDEO_CAPTURE_GSTREAMER
//--------------------------------
gstUtils.listDevices();
//---------------------------------
#endif
//---------------------------------
//---------------------------------
#ifdef OF_VIDEO_CAPTURE_V4L
//--------------------------------
struct stat st;
printf( "listing available capture devices");
printf( "---");
for (int i = 0; i < 8; i++)
{
sprintf(dev_name, "/dev/video%i", i);
if (stat (dev_name, &st) == 0) {
printf( "Video device %i = /dev/video%i",i,i);
} else {
}
}
printf( "---");
//---------------------------------
#endif
//---------------------------------
}
//--------------------------------------------------------------------
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
//---------------------------------
}
