FGFS-4.1/OpenSceneGraph
4
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

From Colin Dunlop, add live video stream support

Browse Source
This commit is contained in:
Robert Osfield
2007-11-06 12:07:23 +00:00
parent 2e2ddba49e
commit 043ed14ba9
5 changed files with 1670 additions and 3 deletions
Download Patch File Download Diff File Expand all files Collapse all files

117
src/osgPlugins/quicktime/ReaderWriterQT.cpp
View File

@@ -15,12 +15,21 @@
#include <stdlib.h>
#include <string.h>
#ifndef __APPLE__
#include "Components.h"
#include "QuickTimeComponents.h"
#else
#include <Quicktime/Quicktime.h>
#endif
#ifndef SEEK_SET
# define SEEK_SET 0
#endif
#include "QTUtils.h"
#include "QTLiveUtils.h"
#include "QTtexture.h"
#include "QuicktimeImageStream.h"
#include "QuicktimeLiveImageStream.h"
using namespace osg;
@@ -34,8 +43,12 @@ class QuicktimeExitObserver : public osg::Observer
{
public:
QuicktimeExitObserver () : _instanceCount(0){}
virtual ~QuicktimeExitObserver(){};
QuicktimeExitObserver () : _instanceCount(0)
{
}
virtual ~QuicktimeExitObserver()
{
};
void addMedia(Image* ptr)
{
@@ -59,6 +72,14 @@ private:
class ReaderWriterQT : public osgDB::ReaderWriter
{
public:
ReaderWriterQT::ReaderWriterQT()
{
}
ReaderWriterQT::~ReaderWriterQT()
{
}
virtual const char* className() const { return "Default Quicktime Image Reader/Writer"; }
virtual bool acceptsMovieExtension(const std::string& extension) const
@@ -74,6 +95,11 @@ public:
osgDB::equalCaseInsensitive(extension,"swf");
}
virtual bool acceptsLiveExtension(const std::string& extension) const
{
return osgDB::equalCaseInsensitive(extension,"live");
}
virtual bool acceptsExtension(const std::string& extension) const
{
// this should be the only image importer required on the Mac
@@ -95,7 +121,8 @@ public:
osgDB::equalCaseInsensitive(extension,"psd") ||
#endif
acceptsMovieExtension(extension);
acceptsMovieExtension(extension) ||
acceptsLiveExtension(extension);
}
virtual ReadResult readImage(const std::string& file, const osgDB::ReaderWriter::Options* options) const
@@ -108,6 +135,89 @@ public:
if (!acceptsExtension(ext)) return ReadResult::FILE_NOT_HANDLED;
// if the file is a ".live" video encoded string then load as an ImageStream
if (acceptsLiveExtension(ext))
{
long num_video_components;
{
// Begin QuickTime
QTScopedQTMLInitialiser qt_init;
QTScopedMovieInitialiser qt_movie_init;
//
ComponentDescription video_component_description;
video_component_description.componentType = 'vdig'; /* A unique 4-byte code indentifying the command set */
video_component_description.componentSubType = 0L; /* Particular flavor of this instance */
video_component_description.componentManufacturer = 0L; /* Vendor indentification */
video_component_description.componentFlags = 0L; /* 8 each for Component,Type,SubType,Manuf/revision */
video_component_description.componentFlagsMask = 0L; /* Mask for specifying which flags to consider in search, zero during registration */
num_video_components = CountComponents (&video_component_description);
}
if (osgDB::getNameLessExtension(file) == "devices")
{
osg::notify(osg::ALWAYS) << " available Video DigitizerComponents : " << num_video_components << std::endl;
if (num_video_components)
{
// Probe Video Dig
probe_video_digitizer_components();
// Probe SG
std::vector<OSG_SGDeviceList> devices_list = probe_sequence_grabber_components();
if (devices_list.size())
{
// Video
OSG_SGDeviceList& video_device_list = devices_list[0];
// Print
osg::notify(osg::ALWAYS) << std::endl;
osg::notify(osg::ALWAYS) << "Video Component/Input IDs follow: " << std::endl;
osg::notify(osg::ALWAYS) << std::endl;
for (int device_input = 0; device_input < video_device_list.size(); ++device_input)
{
OSG_SGDevicePair device_pair = video_device_list[device_input];
osg::notify(osg::ALWAYS) << device_pair.first.c_str() << " " << device_pair.second.c_str() << std::endl;
}
}
if (devices_list.size() > 1)
{
// Audio
OSG_SGDeviceList& audio_device_list = devices_list[1];
// Print
osg::notify(osg::ALWAYS) << std::endl;
osg::notify(osg::ALWAYS) << "Audio Component/Input IDs follow: " << std::endl;
osg::notify(osg::ALWAYS) << std::endl;
for (int device_input = 0; device_input < audio_device_list.size(); ++device_input)
{
OSG_SGDevicePair device_pair = audio_device_list[device_input];
osg::notify(osg::ALWAYS) << device_pair.first.c_str() << " " << device_pair.second.c_str() << std::endl;
}
}
}
return ReadResult::FILE_NOT_HANDLED;
}
else
{
osg::notify(osg::DEBUG_INFO) << " available Video DigitizerComponents : " << num_video_components << std::endl;
if (num_video_components)
{
// Note from Riccardo Corsi
// Quicktime initialization is done here, when a media is found
// and before any image or movie is loaded.
// After the first call the function does nothing.
// The cleaning up is left to the QuicktimeExitObserver (see below)
initQuicktime();
//
QuicktimeLiveImageStream* p_qt_image_stream = new QuicktimeLiveImageStream(osgDB::getNameLessExtension(file));
// add the media to the observer for proper clean up on exit
_qtExitObserver.addMedia(p_qt_image_stream);
return p_qt_image_stream;
}
else
{
osg::notify(osg::DEBUG_INFO) << "No available Video DigitizerComponents : " << std::endl;
return ReadResult::FILE_NOT_HANDLED;
}
}
}
// Not an encoded "live" psuedo file - so check a real file exists
std::string fileName = osgDB::findDataFile( file, options);
if (fileName.empty()) return ReadResult::FILE_NOT_FOUND;
@@ -118,6 +228,7 @@ public:
// The cleaning up is left to the QuicktimeExitObserver (see below)
initQuicktime();
// if the file is a movie file then load as an ImageStream.
if (acceptsMovieExtension(ext))
{