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qvideostream.h

// -*- c++ -*-

/*
 *
 * Copyright (C) 2002 George Staikos <staikos@kde.org>
 *
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Library General Public
 * License as published by the Free Software Foundation; either
 * version 2 of the License, or (at your option) any later version.
 *
 * This library 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
 * Library General Public License for more details.
 *
 * You should have received a copy of the GNU Library General Public License
 * along with this library; see the file COPYING.LIB.  If not, write to
 * the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
 * Boston, MA 02111-1307, USA.
 */



#ifndef _QVIDEOSTREAM_H
#define _QVIDEOSTREAM_H


#include <qwidget.h>

class QVideoStreamPrivate;

#define QVIDEO_METHOD_NONE      0
#define QVIDEO_METHOD_XSHM      1
#define QVIDEO_METHOD_XV        2
#define QVIDEO_METHOD_XVSHM     4
#define QVIDEO_METHOD_X11       8
#define QVIDEO_METHOD_DGA       16 /* unimplemented */
#define QVIDEO_METHOD_GL        32 /* unimplemented */
#define QVIDEO_METHOD_SDL       64 /* unimplemented */


#define QVIDEO_FORMAT_NONE      0
#define QVIDEO_FORMAT_YUV2      1
#define QVIDEO_FORMAT_YV12      2
#define QVIDEO_FORMAT_I420      3
#define QVIDEO_FORMAT_UYVY      4
#define QVIDEO_FORMAT_GREY      5
#define QVIDEO_FORMAT_HI240     6
#define QVIDEO_FORMAT_RGB565    7
#define QVIDEO_FORMAT_RGB24     8
#define QVIDEO_FORMAT_RGB32     9
#define QVIDEO_FORMAT_RGB555    10
#define QVIDEO_FORMAT_YUYV      11


class QVideoStream : public QObject
{
        Q_OBJECT

public:
        QVideoStream(QWidget *widget, const char* name = 0);
        ~QVideoStream();

        bool scaling() const;
        void setScaling(bool scale);

        /* output method */
        bool haveMethod(int method) const;
        int  method() const;
        int  setMethod(int method);

        /* max output sizes */
        QSize maxSize() const;
        int   maxWidth() const;
        int   maxHeight() const;

        /* output sizes */
        QSize size() const;
        int   width() const;
        int   height() const;

        QSize setSize(const QSize& sz);
        int   setWidth(int width);
        int   setHeight(int height);

        /* input sizes */
        QSize inputSize() const;
        int   inputWidth() const;
        int   inputHeight() const;

        QSize setInputSize(const QSize& sz);
        int setInputWidth(int width);
        int setInputHeight(int height);
        
        /* input formats */
        int format() const;
        int setFormat(int format);

        QVideoStream& operator<<(const unsigned char *const img);

public slots:
        int displayFrame(const unsigned char *const img);

private:
        QVideoStreamPrivate *d;
        QWidget *_w;
        bool _scale;
        int _methods; // list of methods
        int _method;  // the current method
        QSize _size;
        QSize _inputSize;
        bool _init;

        void deInit();
        void init();
};

#endif

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