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/*
* ***** BEGIN GPL LICENSE BLOCK *****
*
* This program 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 2
* of the License, or (at your option) any later version.
*
* This program 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 this program; if not, write to the Free Software Foundation,
* Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
*
* Copyright (c) 2007 The Zdeno Ash Miklas
*
* This source file is part of VideoTexture library
*
* Contributor(s):
*
* ***** END GPL LICENSE BLOCK *****
*/
/** \file VideoBase.h
* \ingroup bgevideotex
*/
#ifndef __VIDEOBASE_H__
#define __VIDEOBASE_H__
#include "PyObjectPlus.h"
#include "ImageBase.h"
#include "Exception.h"
// source states
const int SourceError = -1;
const int SourceEmpty = 0;
const int SourceReady = 1;
const int SourcePlaying = 2;
const int SourceStopped = 3;
// video source formats
enum VideoFormat { None, RGB24, YV12, RGBA32 };
/// base class for video source
class VideoBase : public ImageBase
{
public:
/// constructor
VideoBase (void) : ImageBase(true), m_format(None), m_status(SourceEmpty),
m_repeat(0), m_frameRate(1.0)
{
m_orgSize[0] = m_orgSize[1] = 0;
m_range[0] = m_range[1] = 0.0;
}
/// destructor
virtual ~VideoBase (void) {}
/// open video file
virtual void openFile(char *file)
{
m_isFile = true;
m_status = SourceReady;
}
/// open video capture device
virtual void openCam(char *file, short camIdx)
{
m_isFile = false;
m_status = SourceReady;
}
/// play video
virtual bool play (void)
{
if (m_status == SourceReady || m_status == SourceStopped)
{
m_status = SourcePlaying;
return true;
}
return false;
}
/// pause video
virtual bool pause (void)
{
if (m_status == SourcePlaying)
{
m_status = SourceStopped;
return true;
}
return false;
}
/// stop video
virtual bool stop (void)
{
if (m_status == SourcePlaying)
{
m_status = SourceStopped;
return true;
}
return false;
}
// get video status
int getStatus (void) { return m_status; }
/// get play range
const double * getRange (void) { return m_range; }
/// set play range
virtual void setRange (double start, double stop)
{
if (m_isFile)
{
m_range[0] = start;
m_range[1] = stop;
}
}
// get video repeat
int getRepeat (void) { return m_repeat; }
/// set video repeat
virtual void setRepeat (int rep)
{ if (m_isFile) m_repeat = rep; }
/// get frame rate
float getFrameRate (void) { return m_frameRate; }
/// set frame rate
virtual void setFrameRate (float rate)
{ if (m_isFile) m_frameRate = rate > 0.0f ? rate : 1.0f; }
protected:
/// video format
VideoFormat m_format;
/// original video size
short m_orgSize[2];
/// video status
int m_status;
/// is source file
bool m_isFile;
/// replay range
double m_range[2];
/// repeat count
int m_repeat;
/// frame rate
float m_frameRate;
/// initialize image data
void init (short width, short height);
/// process source data
void process (BYTE * sample);
};
// python fuctions
// cast Image pointer to Video
inline VideoBase *getVideo(PyImage *self)
{ return static_cast<VideoBase*>(self->m_image); }
extern ExceptionID SourceVideoCreation;
// object initialization
template <class T> void Video_init(PyImage *self)
{
// create source video object
if (self->m_image != NULL) delete self->m_image;
HRESULT hRslt = S_OK;
self->m_image = new T(&hRslt);
CHCKHRSLT(hRslt, SourceVideoCreation);
}
// video functions
void Video_open(VideoBase *self, char *file, short captureID);
PyObject *Video_play(PyImage *self);
PyObject *Video_pause(PyImage *self);
PyObject *Video_stop(PyImage *self);
PyObject *Video_refresh(PyImage *self);
PyObject *Video_getStatus(PyImage *self, void *closure);
PyObject *Video_getRange(PyImage *self, void *closure);
int Video_setRange(PyImage *self, PyObject *value, void *closure);
PyObject *Video_getRepeat(PyImage *self, void *closure);
int Video_setRepeat(PyImage *self, PyObject *value, void *closure);
PyObject *Video_getFrameRate(PyImage *self, void *closure);
int Video_setFrameRate(PyImage *self, PyObject *value, void *closure);
/* py api */
extern PyTypeObject ImageRenderType;
extern PyTypeObject ImageMirrorType;
extern PyTypeObject ImageViewportType;
#endif /* __VIDEOBASE_H__ */
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