// 1.
// Create the Sequence Grabber (using GWorld as target memory)
void QuicktimeLiveImageStream::createSequenceGrabber()
{
ComponentDescription sg_component_description;
sg_component_description.componentType = SeqGrabComponentType; /* A unique 4-byte code indentifying the command set */
sg_component_description.componentSubType = 0L; /* Particular flavor of this instance */
sg_component_description.componentManufacturer = 'appl'; /* Vendor indentification */
sg_component_description.componentFlags = 0L; /* 8 each for Component,Type,SubType,Manuf/revision */
sg_component_description.componentFlagsMask = 0L; /* Mask for specifying which flags to consider in search, zero during registration */
long num_sg_components = CountComponents (&sg_component_description);
if (num_sg_components)
{
Component aComponent = 0;
ComponentDescription full_sg_component_description = sg_component_description;
aComponent = FindNextComponent(aComponent, &full_sg_component_description);
if (aComponent)
{
m_gSeqGrabber = OpenComponent(aComponent);
// If we got a sequence grabber, set it up
if (m_gSeqGrabber != 0L)
{
// 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
// Initialize the sequence grabber
ComponentResult result = noErr;
result = SGInitialize (m_gSeqGrabber);
if (result == noErr)
{
// Set GWorld
result = SGSetGWorld(m_gSeqGrabber, (CGrafPtr)m_gw, 0);
if (result != noErr)
{
OSG_FATAL << "Could not set GWorld on SG" << std::endl;
}
}
// Set GWorld back
SetGWorld(origPort, origDevice);
}
}
}
}
OSErr CreateNewSGChannelForRecording(ComponentInstance seqGrab, SGDataUPP dataProc, CGrafPtr drawPort, Rect *theRect, SGChannel *sgChannel, long refCon)
{
OSErr err = noErr;
BailErr((err = SGInitialize(seqGrab)));
// tell it we're not making a movie
BailErr((err = SGSetDataRef(seqGrab,0,0,seqGrabDontMakeMovie)));
// It wants a port, even if its not drawing to it
BailErr((err = SGSetGWorld(seqGrab, drawPort, GetMainDevice())));
BailErr((err = SGNewChannel(seqGrab, VideoMediaType, sgChannel)));
// let the user configure the video channel
BailErr((err = SGSettingsDialog(seqGrab, *sgChannel, 0, nil, 0, nil, 0)));
BailErr((err = SGSetChannelBounds(*sgChannel, theRect)));
// set usage for new video channel to avoid playthrough
BailErr((err = SGSetChannelUsage(*sgChannel, seqGrabRecord ))); //note we don't set seqGrabPlayDuringRecord
BailErr((err = SGSetDataProc(seqGrab, dataProc, refCon)));
BailErr((err = SGStartRecord(seqGrab)));
bail:
return err;
}
bool macsgCamera::initCamera(int width, int height, bool colour) {
if (cameraID < 0) return false;
this->width = width;
this->height = height;
this->colour = colour;
this->fps = 30;
bytes = (colour?3:1);
int rowlength= width*bytes;
switch (colour) {
case false: {
pixelFormat = k8IndexedGrayPixelFormat;
//pixelFormat = kYVYU422PixelFormat;
break;
} case true: {
pixelFormat = k24RGBPixelFormat;
break;
}
}
OSErr result;
Rect srcRect = {0,0, height, width};
sg = OpenDefaultComponent(SeqGrabComponentType, 0);
if(sg==NULL){
fprintf(stderr, "could not open default component\n");
}
result = SGInitialize(sg);
if(result!=noErr){
fprintf(stdout, "could not initialize SG\n");
}
result = SGSetDataRef(sg, 0, 0, seqGrabDontMakeMovie);
if (result != noErr){
fprintf(stdout, "dataref failed\n");
}
result = SGNewChannel(sg, VideoMediaType, &vc);
if(result!=noErr){
//fprintf(stdout, "could not make new SG channnel\n");
return false;
}
// result = SGSettingsDialog ( sg, vc ,0 ,NULL ,seqGrabSettingsPreviewOnly,NULL,0);
// if(result!=noErr){
// fprintf(stdout, "could not get settings from dialog\n");
// }
result = SGSetChannelBounds(vc, &srcRect);
if(result!=noErr){
fprintf(stdout, "could not set SG ChannelBounds\n");
}
/*result = SGSetFrameRate (vc, fps);
if(result!=noErr){
fprintf(stdout, "could not set SG FrameRate\n");
}*/
result = SGSetChannelUsage(vc, seqGrabPreview);
if(result!=noErr){
fprintf(stdout, "could not set SG ChannelUsage\n");
}
result = SGSetChannelPlayFlags(vc, channelPlayAllData);
if(result!=noErr){
fprintf(stdout, "could not set SG AllData\n");
};
buffer = new unsigned char[width*height*bytes];
result = QTNewGWorldFromPtr (&srcGWorld,
pixelFormat,
&srcRect,
NULL,
NULL,
0,
buffer,
rowlength);
if (result!= noErr)
{
fprintf(stdout, "%d error at QTNewGWorldFromPtr\n", result);
delete []buffer;
buffer = NULL;
return false;
}
if (srcGWorld == NULL)
{
fprintf(stdout, "Could not allocate off screen\n");
delete []buffer;
buffer = NULL;
return false;
}
result = SGSetGWorld(sg,(CGrafPtr)srcGWorld, NULL);
if (result != noErr) {
fprintf(stdout, "Could not set SGSetGWorld\n");
delete []buffer;
buffer = NULL;
return false;
}
result = SGPrepare(sg, TRUE, FALSE);
if (result != noErr) {
fprintf(stderr, "SGPrepare Preview failed\n");
}
pbuffer = new unsigned char[width*height*bytes];
return true;
}
//------------------------------------------------------
bool ofVideoGrabber::qtInitSeqGrabber(){
if (bSgInited != true){
OSErr err = noErr;
ComponentDescription theDesc;
Component sgCompID;
// this crashes when we get to
// SGNewChannel
// we get -9405 as error code for the channel
// -----------------------------------------
// gSeqGrabber = OpenDefaultComponent(SeqGrabComponentType, 0);
// this seems to work instead (got it from hackTV)
// -----------------------------------------
theDesc.componentType = SeqGrabComponentType;
theDesc.componentSubType = NULL;
theDesc.componentManufacturer = 'appl';
theDesc.componentFlags = NULL;
theDesc.componentFlagsMask = NULL;
sgCompID = FindNextComponent (NULL, &theDesc);
// -----------------------------------------
if (sgCompID == NULL){
ofLog(OF_LOG_ERROR, "error:FindNextComponent did not return a valid component");
return false;
}
gSeqGrabber = OpenComponent(sgCompID);
err = GetMoviesError();
if (gSeqGrabber == NULL || err) {
ofLog(OF_LOG_ERROR, "error: can't get default sequence grabber component");
return false;
}
err = SGInitialize(gSeqGrabber);
if (err != noErr) {
ofLog(OF_LOG_ERROR, "error: can't initialize sequence grabber component");
return false;
}
err = SGSetDataRef(gSeqGrabber, 0, 0, seqGrabDontMakeMovie);
if (err != noErr) {
ofLog(OF_LOG_ERROR, "error: can't set the destination data reference");
return false;
}
// windows crashes w/ out gworld, make a dummy for now...
// this took a long time to figure out.
err = SGSetGWorld(gSeqGrabber, 0, 0);
if (err != noErr) {
ofLog(OF_LOG_ERROR, "error: setting up the gworld");
return false;
}
err = SGNewChannel(gSeqGrabber, VideoMediaType, &(gVideoChannel));
if (err != noErr) {
ofLog(OF_LOG_ERROR, "error: creating a channel. Check if you have any qt capable cameras attached");
return false;
}
bSgInited = true;
return true;
}
return false;
}
static gboolean
gst_osx_video_src_start (GstBaseSrc * src)
{
GstOSXVideoSrc *self;
GObjectClass *gobject_class;
GstOSXVideoSrcClass *klass;
ComponentResult err;
self = GST_OSX_VIDEO_SRC (src);
gobject_class = G_OBJECT_GET_CLASS (src);
klass = GST_OSX_VIDEO_SRC_CLASS (gobject_class);
GST_DEBUG_OBJECT (src, "entering");
if (!klass->movies_enabled)
return FALSE;
self->seq_num = 0;
self->seq_grab = OpenDefaultComponent (SeqGrabComponentType, 0);
if (self->seq_grab == NULL) {
err = paramErr;
GST_ERROR_OBJECT (self, "OpenDefaultComponent failed. paramErr=%d",
(int) err);
goto fail;
}
err = SGInitialize (self->seq_grab);
if (err != noErr) {
GST_ERROR_OBJECT (self, "SGInitialize returned %d", (int) err);
goto fail;
}
err = SGSetDataRef (self->seq_grab, 0, 0, seqGrabDontMakeMovie);
if (err != noErr) {
GST_ERROR_OBJECT (self, "SGSetDataRef returned %d", (int) err);
goto fail;
}
err = SGNewChannel (self->seq_grab, VideoMediaType, &self->video_chan);
if (err != noErr) {
GST_ERROR_OBJECT (self, "SGNewChannel returned %d", (int) err);
goto fail;
}
if (!device_select (self))
goto fail;
GST_DEBUG_OBJECT (self, "started");
return TRUE;
fail:
self->video_chan = NULL;
if (self->seq_grab) {
err = CloseComponent (self->seq_grab);
if (err != noErr)
GST_WARNING_OBJECT (self, "CloseComponent returned %d", (int) err);
self->seq_grab = NULL;
}
return FALSE;
}
/* return a list of available devices. the default device (if any) will be
* the first in the list.
*/
static GList *
device_list (GstOSXVideoSrc * src)
{
SeqGrabComponent component = NULL;
SGChannel channel;
SGDeviceList deviceList;
SGDeviceName *deviceEntry;
SGDeviceInputList inputList;
SGDeviceInputName *inputEntry;
ComponentResult err;
int n, i;
GList *list;
video_device *dev, *default_dev;
gchar sgname[256];
gchar friendly_name[256];
list = NULL;
default_dev = NULL;
if (src->video_chan) {
/* if we already have a video channel allocated, use that */
GST_DEBUG_OBJECT (src, "reusing existing channel for device_list");
channel = src->video_chan;
} else {
/* otherwise, allocate a temporary one */
component = OpenDefaultComponent (SeqGrabComponentType, 0);
if (!component) {
err = paramErr;
GST_ERROR_OBJECT (src, "OpenDefaultComponent failed. paramErr=%d",
(int) err);
goto end;
}
err = SGInitialize (component);
if (err != noErr) {
GST_ERROR_OBJECT (src, "SGInitialize returned %d", (int) err);
goto end;
}
err = SGSetDataRef (component, 0, 0, seqGrabDontMakeMovie);
if (err != noErr) {
GST_ERROR_OBJECT (src, "SGSetDataRef returned %d", (int) err);
goto end;
}
err = SGNewChannel (component, VideoMediaType, &channel);
if (err != noErr) {
GST_ERROR_OBJECT (src, "SGNewChannel returned %d", (int) err);
goto end;
}
}
err =
SGGetChannelDeviceList (channel, sgDeviceListIncludeInputs, &deviceList);
if (err != noErr) {
GST_ERROR_OBJECT (src, "SGGetChannelDeviceList returned %d", (int) err);
goto end;
}
for (n = 0; n < (*deviceList)->count; ++n) {
deviceEntry = &(*deviceList)->entry[n];
if (deviceEntry->flags & sgDeviceNameFlagDeviceUnavailable)
continue;
p2cstrcpy (sgname, deviceEntry->name);
inputList = deviceEntry->inputs;
if (inputList && (*inputList)->count >= 1) {
for (i = 0; i < (*inputList)->count; ++i) {
inputEntry = &(*inputList)->entry[i];
p2cstrcpy (friendly_name, inputEntry->name);
dev = video_device_alloc ();
dev->id = create_device_id (sgname, i);
if (!dev->id) {
video_device_free (dev);
i = -1;
break;
}
dev->name = g_strdup (friendly_name);
list = g_list_append (list, dev);
/* if this is the default device, note it */
if (n == (*deviceList)->selectedIndex
&& i == (*inputList)->selectedIndex) {
default_dev = dev;
}
}
/* error */
if (i == -1)
break;
} else {
/* ### can a device have no defined inputs? */
dev = video_device_alloc ();
dev->id = create_device_id (sgname, -1);
if (!dev->id) {
video_device_free (dev);
break;
}
dev->name = g_strdup (sgname);
list = g_list_append (list, dev);
/* if this is the default device, note it */
if (n == (*deviceList)->selectedIndex) {
default_dev = dev;
}
}
}
/* move default device to the front */
if (default_dev) {
list = g_list_remove (list, default_dev);
list = g_list_prepend (list, default_dev);
}
end:
if (!src->video_chan && component) {
err = CloseComponent (component);
if (err != noErr)
GST_WARNING_OBJECT (src, "CloseComponent returned %d", (int) err);
}
return list;
}
/* Initialize the QuickTime grabber */
static int qt_open_grabber(struct qt_grabber_state *s, char *fmt)
{
GrafPtr savedPort;
WindowPtr gMonitor;
//SGModalFilterUPP seqGrabModalFilterUPP;
assert(s != NULL);
assert(s->magic == MAGIC_QT_GRABBER);
/****************************************************************************************/
/* Step 0: Initialise the QuickTime movie toolbox. */
InitCursor();
EnterMovies();
/****************************************************************************************/
/* Step 1: Create an off-screen graphics world object, into which we can capture video. */
/* Lock it into position, to prevent QuickTime from messing with it while capturing. */
OSType pixelFormat;
pixelFormat = FOUR_CHAR_CODE('BGRA');
/****************************************************************************************/
/* Step 2: Open and initialise the default sequence grabber. */
s->grabber = OpenDefaultComponent(SeqGrabComponentType, 0);
if (s->grabber == 0) {
debug_msg("Unable to open grabber\n");
return 0;
}
gMonitor = GetDialogWindow(GetNewDialog(1000, NULL, (WindowPtr) - 1L));
GetPort(&savedPort);
SetPort((GrafPtr)gMonitor);
if (SGInitialize(s->grabber) != noErr) {
debug_msg("Unable to init grabber\n");
return 0;
}
SGSetGWorld(s->grabber, GetDialogPort((DialogPtr)gMonitor), NULL);
/****************************************************************************************/
/* 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 (SGSetDataRef(s->grabber, 0, 0, seqGrabDontMakeMovie) != noErr) {
CloseComponent(s->grabber);
debug_msg("Unable to set data ref\n");
return 0;
}
if (SGSetGWorld(s->grabber, NULL, NULL) != noErr) {
debug_msg("Unable to get gworld from grabber\n");
return 0;
}
if (SGNewChannel(s->grabber, VideoMediaType, &s->video_channel) !=
noErr) {
debug_msg("Unable to open video channel\n");
return 0;
}
/* do not check for grab audio in case that we will only display usage */
if (SGNewChannel(s->grabber, SoundMediaType, &s->audio_channel) !=
noErr) {
fprintf(stderr, "Warning: Creating audio channel failed. "
"Disabling sound output.\n");
s->grab_audio = FALSE;
}
/* Print available devices */
int i;
int j;
SGDeviceInputList inputList;
SGDeviceList deviceList;
if (strcmp(fmt, "help") == 0) {
printf("\nUsage:\t-t quicktime:<device>:<mode>:<pixel_type>[:<audio_device>:<audio_mode>]\n\n");
if (SGGetChannelDeviceList
(s->video_channel, sgDeviceListIncludeInputs,
&deviceList) == noErr) {
fprintf(stdout, "\nAvailable capture devices:\n");
for (i = 0; i < (*deviceList)->count; i++) {
SGDeviceName *deviceEntry =
&(*deviceList)->entry[i];
fprintf(stdout, " Device %d: ", i);
nprintf((char *) deviceEntry->name);
if (deviceEntry->flags &
sgDeviceNameFlagDeviceUnavailable) {
fprintf(stdout,
" - ### NOT AVAILABLE ###");
}
if (i == (*deviceList)->selectedIndex) {
fprintf(stdout, " - ### ACTIVE ###");
}
fprintf(stdout, "\n");
short activeInputIndex = 0;
inputList = deviceEntry->inputs;
if (inputList && (*inputList)->count >= 1) {
SGGetChannelDeviceAndInputNames
(s->video_channel, NULL, NULL,
&activeInputIndex);
for (j = 0; j < (*inputList)->count;
j++) {
fprintf(stdout, "\t");
fprintf(stdout, "- %d. ", j);
nprintf((char *) &(*inputList)->entry
[j].name);
if ((i ==
(*deviceList)->selectedIndex)
&& (j == activeInputIndex))
fprintf(stdout,
" - ### ACTIVE ###");
fprintf(stdout, "\n");
}
}
}
SGDisposeDeviceList(s->grabber, deviceList);
CodecNameSpecListPtr list;
GetCodecNameList(&list, 1);
printf("\nCompression types:\n");
for (i = 0; i < list->count; i++) {
int fcc = list->list[i].cType;
printf("\t%d) ", i);
nprintf((char *) list->list[i].typeName);
printf(" - FCC (%c%c%c%c)",
fcc >> 24,
(fcc >> 16) & 0xff,
(fcc >> 8) & 0xff, (fcc) & 0xff);
printf(" - codec id %x",
(unsigned int)(list->list[i].codec));
printf(" - cType %x",
(unsigned int)list->list[i].cType);
printf("\n");
}
}
void pix_videoDarwin :: InitSeqGrabber()
{
OSErr anErr;
Rect m_srcRect = {0,0, m_vidYSize, m_vidXSize};
SGDeviceList devices;
short deviceIndex,inputIndex;
short deviceCount = 0;
SGDeviceInputList theSGInputList = NULL;
bool showInputsAsDevices;
// UserData *uD;
/*
int num_components = 0;
Component c = 0;
ComponentDescription cd;
cd.componentType = SeqGrabComponentType;
cd.componentSubType = 0;
cd.componentManufacturer = 0;
cd.componentFlags = 0;
cd.componentFlagsMask = 0;
while((c = FindNextComponent(c, &cd)) != 0) {
num_components++; } // add component c to the list.
// post("number of SGcomponents: %d",num_components);
*/
m_sg = OpenDefaultComponent(SeqGrabComponentType, 0);
if(m_sg==NULL){
error("could not open default component");
return;
}
anErr = SGInitialize(m_sg);
if(anErr!=noErr){
error("could not initialize SG error %d",anErr);
return;
}
anErr = SGSetDataRef(m_sg, 0, 0, seqGrabDontMakeMovie);
if (anErr != noErr){
error("dataref failed with error %d",anErr);
}
anErr = SGNewChannel(m_sg, VideoMediaType, &m_vc);
if(anErr!=noErr){
error("could not make new SG channnel error %d",anErr);
return;
}
anErr = SGGetChannelDeviceList(m_vc, sgDeviceListIncludeInputs, &devices);
if(anErr!=noErr){
error("could not get SG channnel Device List");
}else{
deviceCount = (*devices)->count;
deviceIndex = (*devices)->selectedIndex;
logpost(NULL, 3, "SG channnel Device List count %d index %d",deviceCount,deviceIndex);
int i;
for (i = 0; i < deviceCount; i++){
logpost(NULL, 3, "SG channnel Device List %.*s",
(*devices)->entry[i].name[0],
(*devices)->entry[i].name+1);
}
SGGetChannelDeviceAndInputNames(m_vc, NULL, NULL, &inputIndex);
showInputsAsDevices = ((*devices)->entry[deviceIndex].flags) & sgDeviceNameFlagShowInputsAsDevices;
theSGInputList = ((SGDeviceName *)(&((*devices)->entry[deviceIndex])))->inputs; //fugly
//we should have device names in big ass undocumented structs
//walk through the list
//for (i = 0; i < deviceCount; i++){
for (i = 0; i < inputIndex; i++){
logpost(NULL, 3, "SG channnel Input Device List %d %.*s",
i,
(*theSGInputList)->entry[i].name[0],
(*theSGInputList)->entry[i].name+1);
}
}
//this call sets the input device
if (m_inputDevice > 0 && m_inputDevice < deviceCount) //check that the device is not out of bounds
//anErr = SGSetChannelDeviceInput(m_vc,m_inputDevice);
logpost(NULL, 3, "SGSetChannelDevice trying %s",
(*devices)->entry[m_inputDevice].name[0],
(*devices)->entry[m_inputDevice].name+1);
anErr = SGSetChannelDevice(m_vc, (*devices)->entry[m_inputDevice].name);
if(anErr!=noErr) error("SGSetChannelDevice returned error %d",anErr);
anErr = SGSetChannelDeviceInput(m_vc,m_inputDeviceChannel);
if(anErr!=noErr) error("SGSetChannelDeviceInput returned error %d",anErr);
/* //attempt to save SG settings to disk
NewUserData(uD);
SGGetSettings(m_sg,uD,0);
short uDCount;
uDCount = CountUserDataType(*uD,sgClipType);
post("UserDataType count %d",uDCount);
Handle myHandle;
PutUserDataIntoHandle(*uD,myHandle);
int myFile;
myFile = open("/Users/lincoln/Documents/temp",O_CREAT | O_RDWR, 0600);
write(myFile,myHandle,4096);
close(myFile);
*/
//grab the VDIG info from the SGChannel
m_vdig = SGGetVideoDigitizerComponent(m_vc);
vdigErr = VDGetDigitizerInfo(m_vdig,&m_vdigInfo); //not sure if this is useful
Str255 vdigName;
memset(vdigName,0,255);
vdigErr = VDGetInputName(m_vdig,m_inputDevice,vdigName);
logpost(NULL, 3, "vdigName is %s",vdigName); // pascal string?
Rect vdRect;
vdigErr = VDGetDigitizerRect(m_vdig,&vdRect);
logpost(NULL, 3, "digitizer rect is top %d bottom %d left %d right %d",vdRect.top,vdRect.bottom,vdRect.left,vdRect.right);
vdigErr = VDGetActiveSrcRect(m_vdig,0,&vdRect);
logpost(NULL, 3, "active src rect is top %d bottom %d left %d right %d",vdRect.top,vdRect.bottom,vdRect.left,vdRect.right);
anErr = SGSetChannelBounds(m_vc, &m_srcRect);
if(anErr!=noErr){
error("could not set SG ChannelBounds ");
}
anErr = SGSetVideoRect(m_vc, &m_srcRect);
if(anErr!=noErr){
error("could not set SG Rect ");
}
anErr = SGSetChannelUsage(m_vc, seqGrabPreview);
if(anErr!=noErr){
error("could not set SG ChannelUsage ");
}
switch (m_quality){
case 0:
anErr = SGSetChannelPlayFlags(m_vc, channelPlayNormal);
post("set SG NormalQuality");
break;
case 1:
anErr = SGSetChannelPlayFlags(m_vc, channelPlayHighQuality);
post("set SG HighQuality");
break;
case 2:
anErr = SGSetChannelPlayFlags(m_vc, channelPlayFast);
post("set SG FastQuality");
break;
case 3:
anErr = SGSetChannelPlayFlags(m_vc, channelPlayAllData);
post("set SG PlayAlldata");
break;
}
if (m_colorspace==GL_BGRA_EXT){
m_pixBlock.image.xsize = m_vidXSize;
m_pixBlock.image.ysize = m_vidYSize;
m_pixBlock.image.setCsizeByFormat(GL_RGBA_GEM);
m_pixBlock.image.reallocate();
m_rowBytes = m_vidXSize*4;
anErr = QTNewGWorldFromPtr (&m_srcGWorld,
k32ARGBPixelFormat,
&m_srcRect,
NULL,
NULL,
0,
m_pixBlock.image.data,
m_rowBytes);
post ("using RGB");
}else{
m_pixBlock.image.xsize = m_vidXSize;
m_pixBlock.image.ysize = m_vidYSize;
m_pixBlock.image.csize = 2;
m_pixBlock.image.format = GL_YCBCR_422_APPLE;
#ifdef __VEC__
m_pixBlock.image.type = GL_UNSIGNED_SHORT_8_8_REV_APPLE;
#else
m_pixBlock.image.type = GL_UNSIGNED_SHORT_8_8_APPLE;
#endif
m_pixBlock.image.reallocate();
m_rowBytes = m_vidXSize*2;
anErr = QTNewGWorldFromPtr (&m_srcGWorld,
// k422YpCbCr8CodecType,
k422YpCbCr8PixelFormat,
// '2vuy',
// kComponentVideoUnsigned,
&m_srcRect,
NULL,
NULL,
0,
m_pixBlock.image.data,
m_rowBytes);
post ("using YUV");
}
if (anErr!= noErr)
{
error("%d error at QTNewGWorldFromPtr", anErr);
return;
}
if (NULL == m_srcGWorld)
{
error("could not allocate off screen");
return;
}
SGSetGWorld(m_sg,(CGrafPtr)m_srcGWorld, NULL);
SGStartPreview(m_sg); //moved to starttransfer?
m_haveVideo = 1;
}
// ######################################################################
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));
}
static int sequence_grabber_start(V4lState *s)
{
int err;
Rect theRect = {0, 0, s->vsize.height, s->vsize.width};
err = QTNewGWorld(&(s->pgworld), // returned GWorld
k24BGRPixelFormat,
&theRect, // bounding rectangle
0, // color table
NULL, // graphic device handle
0); // flags
if (err!=noErr)
{
return -1;
}
if(!LockPixels(GetPortPixMap(s->pgworld)))
{
v4m_close(s);
return -1;
}
s->seqgrab = OpenDefaultComponent(SeqGrabComponentType, 0);
err = SGInitialize(s->seqgrab);
if (err!=noErr)
{
v4m_close(s);
return -1;
}
err = SGSetDataRef(s->seqgrab, 0, 0, seqGrabDontMakeMovie);
if (err!=noErr)
{
v4m_close(s);
return -1;
}
err = SGSetGWorld(s->seqgrab, s->pgworld, GetMainDevice());
if (err!=noErr)
{
v4m_close(s);
return -1;
}
err = SGNewChannel(s->seqgrab, VideoMediaType, &s->sgchanvideo);
if (err!=noErr)
{
v4m_close(s);
return -1;
}
err = SGSetChannelBounds(s->sgchanvideo, &theRect);
if (err!=noErr)
{
v4m_close(s);
return -1;
}
err = SGSetChannelUsage(s->sgchanvideo, seqGrabRecord);
if (err!=noErr)
{
v4m_close(s);
return -1;
}
err = SGSetDataProc(s->seqgrab,NewSGDataUPP(sgdata_callback),(long)s);
if (err!=noErr)
{
v4m_close(s);
return -1;
}
err = SGStartRecord(s->seqgrab);
if (err!=noErr)
{
v4m_close(s);
return -1;
}
return 0;
}
