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/*
* KDE Xv interface
*
* Copyright (C) 2001 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., 51 Franklin Street, Fifth Floor,
* Boston, MA 02110-1301, USA.
*/
#ifndef __KXV_H
#define __KXV_H
#include <X11/X.h>
#include <X11/Xlib.h>
#include <qstring.h>
#include <qstringlist.h>
#include <qptrlist.h>
class QWidget;
class QImage;
class KXvPrivate;
class KXvDevice;
class KXvDevicePrivate;
typedef QPtrList<KXvDevice> KXvDeviceList;
class KXv
{
public:
~KXv();
/*
* To get access to the Xv extension, you call this method. It will return
* a KXv* object on success, or NULL if it can't connect.
*
* d is typically the Window ID
*/
static KXv *connect(Drawable d);
/*
* True if we can connect to the Xv extension.
*/
static bool haveXv();
/*
* Return the list of Xv devices
*/
KXvDeviceList& devices();
protected:
KXv();
bool init(Drawable d);
/*** XV info ***/
unsigned int xv_version, xv_release, xv_request, xv_event, xv_error;
unsigned int xv_adaptors;
void *xv_adaptor_info;
KXvDeviceList _devs;
private:
KXvPrivate *d;
};
class KXvDeviceAttribute
{
public:
QString name;
int min;
int max;
int flags;
Atom atom();
};
typedef QPtrList<KXvDeviceAttribute> KXvDeviceAttributes;
class KXvDevice
{
friend class KXv;
public:
KXvDevice();
~KXvDevice();
/*
* return the list of known attributes
*/
const KXvDeviceAttributes& attributes();
/*
* return the range for a given attribute
*/
bool getAttributeRange(const QString& attribute, int *min, int *max);
/*
* get the current value of a given attribute
*/
bool getAttribute(const QString& attribute, int *val);
/*
* set the current value of a given attribute
*/
bool setAttribute(const QString& attribute, int val);
bool grabStill(QImage *pix, int dw, int dh);
/*
* True if this device can operate on the given widget
*/
bool supportsWidget(QWidget *w);
/*
* Display the given image with Xv.
*/
int displayImage(QWidget *widget, const unsigned char *const data, int w, int h, int dw, int dh);
int displayImage(Window win, const unsigned char *const data, int w, int h, int dw, int dh);
/*
* Display a portion of the given image with Xv.
*/
int displayImage(QWidget *widget, const unsigned char *const data, int w, int h, int x, int y, int sw, int sh, int dw, int dh);
int displayImage(Window win, const unsigned char *const data, int w, int h, int x, int y, int sw, int sh, int dw, int dh);
/*
* Start a video stream in widget w, width dw, height dh
*/
bool startVideo(QWidget *w, int dw, int dh);
bool startVideo(Window w, int dw, int dh);
/*
* Is the video playing
*/
bool videoPlaying() const;
/*
* Stop video stream
*/
bool stopVideo();
/*
* True if this is an image output backend (video card)
*/
bool isImageBackend();
/*
* True if this is a video source
*/
bool isVideoSource();
/*
* Name of the device
*/
const QString& name() const;
/*
* The Xv port for this device
*/
int port() const;
/*
* The list of encodings/norms available
*/
const QStringList& encodings() const;
/*
* get encoding
*/
bool encoding(QString& encoding);
/*
* Set the encoding to the given one. This should be taken from the list.
*/
bool setEncoding(const QString& e);
/*
* Set the image format. (ex YUV)
*/
int setImageFormat(int format);
/*
* Get the current image format
*/
int imageFormat() const;
/*
* Use SHM for PutImage if available
*/
bool useShm(bool on);
/*
* Is SHM being used?
*/
bool usingShm() const;
protected:
bool init();
bool _shm;
KXvDeviceAttributes _attrs;
int xv_type, xv_adaptor;
QString xv_name;
int xv_port;
unsigned int xv_encodings;
int xv_encoding;
void *xv_encoding_info;
int xv_encoding_attributes;
void *xv_attr;
GC xv_gc;
Window xv_last_win;
QStringList _encodingList;
int xv_formats;
void *xv_formatvalues;
int xv_nvisualformats;
void *xv_visualformats; // XvFormat*
bool videoStarted;
Window videoWindow;
long xv_imageformat;
void *xv_shminfo;
void *xv_image;
int xv_image_w;
int xv_image_h;
bool _haveShm;
private:
KXvDevicePrivate *d;
void rebuildImage(int w, int h, bool shm);
void destroyImage();
};
#endif
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