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/***************************************************************************
qvideo.cpp
----------
begin : Sat Jun 12 2004
copyright : (C) 2004 by Dirk Ziegelmeier
(C) 2002 by George Staikos
email : [email protected]
***************************************************************************/
/*
* 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.
*/
#include "qvideo.h"
#include <kdebug.h>
#include <qpaintdevice.h>
#include <X11/Xlib.h>
#include <X11/Xutil.h>
unsigned int QVideo::bytesppForFormat(ImageFormat fmt)
{
switch (fmt) {
case FORMAT_RGB32:
case FORMAT_RGB24:
case FORMAT_BGR32:
case FORMAT_BGR24:
return 4;
case FORMAT_RGB15_LE:
case FORMAT_RGB16_LE:
case FORMAT_RGB15_BE:
case FORMAT_RGB16_BE:
case FORMAT_YUYV:
case FORMAT_UYVY:
case FORMAT_YUV422P:
case FORMAT_YUV420P:
return 2;
case FORMAT_GREY:
case FORMAT_HI240:
return 1;
default:
// unknown format
return 0;
}
}
bool QVideo::findDisplayProperties(ImageFormat& fmt, int& depth, unsigned int& bitsperpixel, int& bytesperpixel)
{
XVisualInfo *vi_in, vi_out;
long mask = VisualScreenMask;
int nvis = 0;
ImageFormat p = FORMAT_NONE;
int bpp = 0;
int d = 0;
vi_out.screen = QPaintDevice::x11AppScreen();
vi_in = XGetVisualInfo(qt_xdisplay(), mask, &vi_out, &nvis);
if (vi_in) {
for (int i = 0; i < nvis; i++) {
bpp = 0;
int n;
XPixmapFormatValues *pf = XListPixmapFormats(qt_xdisplay(),&n);
d = vi_in[i].depth;
for (int j = 0; j < n; j++) {
if (pf[j].depth == d) {
bpp = pf[j].bits_per_pixel;
break;
}
}
XFree(pf);
// FIXME: Endianess detection
p = FORMAT_NONE;
switch (bpp) {
case 32:
if (vi_in[i].red_mask == 0xff0000 &&
vi_in[i].green_mask == 0x00ff00 &&
vi_in[i].blue_mask == 0x0000ff) {
p = FORMAT_BGR32;
kdDebug() << "QVideo: Found BGR32 display." << endl;
}
break;
case 24:
if (vi_in[i].red_mask == 0xff0000 &&
vi_in[i].green_mask == 0x00ff00 &&
vi_in[i].blue_mask == 0x0000ff) {
p = FORMAT_BGR24;
kdDebug() << "QVideo: Found BGR24 display." << endl;
}
break;
case 16:
if (vi_in[i].red_mask == 0x00f800 &&
vi_in[i].green_mask == 0x0007e0 &&
vi_in[i].blue_mask == 0x00001f) {
p = FORMAT_RGB15_LE;
kdDebug() << "QVideo: Found RGB16_LE display." << endl;
} else
if (vi_in[i].red_mask == 0x007c00 &&
vi_in[i].green_mask == 0x0003e0 &&
vi_in[i].blue_mask == 0x00001f) {
p = FORMAT_RGB15_LE;
kdDebug() << "QVideo: Found RGB15_LE display." << endl;
}
break;
case 8:
default:
continue;
}
if (p != FORMAT_NONE)
break;
}
XFree(vi_in);
}
if (p != FORMAT_NONE) {
int bytespp = bytesppForFormat(p);
kdDebug() << "QVideo: Display properties: depth: " << d
<< ", bits/pixel: " << bpp
<< ", bytes/pixel: " << bytespp << endl;
fmt = p;
bitsperpixel = bpp;
bytesperpixel = bytespp;
depth = d;
return true;
} else {
kdWarning() << "QVideo: Unable to find out palette. What display do you have????" << endl;
fmt = FORMAT_NONE;
bitsperpixel = 0;
bytesperpixel = 0;
depth = 0;
return false;
}
}
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