/*
* (c) 2005, 2008 Nico Pranke <Nico.Pranke@googlemail.com>, Robin Luedtke <RobinLu@gmx.de>
*
* This file is part of avcap.
*
* avcap is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* avcap is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with avcap. If not, see <http://www.gnu.org/licenses/>.
*/
/* avcap is free for non-commercial use.
* To use it in commercial endeavors, please contact Nico Pranke <Nico.Pranke@googlemail.com>.
*/
#ifndef QT_VIDCAPMANAGER_H_
#define QT_VIDCAPMANAGER_H_
#include <sys/types.h>
#include <list>
#include <time.h>
#include <pthread.h>
#include <QuickTime/QuickTime.h>
#include "CaptureManager.h"
namespace avcap
{
class QT_DeviceDescriptor;
class QT_FormatManager;
class IOBuffer;
class CaptureHandler;
//! Implementation of the CaptureManager for the QuickTime-implementation of a CaptureDevice.
/*! This CaptureManager captures the data in an ow thread.
* Decompression is performed, if neccessary (e.g. for DV-Cams). */
class QT_VidCapManager: public CaptureManager
{
public:
private:
typedef std::list<IOBuffer*> IOBufList_t;
QT_DeviceDescriptor *mQTDeviceDescriptor;
QT_FormatManager *mFormatMgr;
IOBufList_t mBuffers;
TimeScale mTimeScale;
TimeScale mLastTime;
pthread_t* mThread;
pthread_mutex_t mLock;
int mFinish;
long mSequence;
int mNumBufs;
int mAvailableBuffers;
ICMDecompressionSessionRef mDecompSession;
public:
QT_VidCapManager(QT_DeviceDescriptor* dd, QT_FormatManager* fmt_mgr, int nbufs);
virtual ~QT_VidCapManager();
int init();
int destroy();
int startCapture();
int stopCapture();
virtual IOBuffer* dequeue();
virtual int enqueue(IOBuffer* buf);
virtual int getNumIOBuffers();
private:
int startCaptureImpl();
int stopCaptureImpl();
void notifyCaptureHandler(void* data, size_t length, size_t bytes_per_row, TimeValue time);
int poll();
struct timespec getPollTimespec(double fps);
int decompressData(void* data, long length, TimeValue timeValue);
static OSErr captureCallback(SGChannel ch, Ptr data, long data_len, long * offset,
long ch_ref_con, TimeValue time_value, short write_type, long priv);
OSErr captureCallbackImpl(SGChannel ch, Ptr data, long data_len, long * offset,
long ch_ref_con, TimeValue time_value, short write_type);
int createDecompSession();
static void* threadFunc(void* arg);
static void decompTrackingCallback(void *decompressionTrackingRefCon, OSStatus result,
ICMDecompressionTrackingFlags decompressionTrackingFlags, CVPixelBufferRef pixelBuffer,
TimeValue64 displayTime, TimeValue64 displayDuration, ICMValidTimeFlags validTimeFlags,
void *reserved, void *sourceFrameRefCon );
void threadFuncImpl();
void clearBuffers();
};
}
#endif // QT_VIDCAPMANAGER_H