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155 lines
4.4 KiB
155 lines
4.4 KiB
/***************************************************************************
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qvideo.cpp
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----------
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begin : Sat Jun 12 2004
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copyright : (C) 2004 by Dirk Ziegelmeier
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(C) 2002 by George Staikos
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email : dziegel@gmx.de
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***************************************************************************/
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/*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Library General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Library General Public License for more details.
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*
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* You should have received a copy of the GNU Library General Public License
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* along with this library; see the file COPYING.LIB. If not, write to
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* the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
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* Boston, MA 02110-1301, USA.
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*/
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#include "qvideo.h"
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#include <kdebug.h>
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#include <qpaintdevice.h>
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#include <X11/Xlib.h>
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#include <X11/Xutil.h>
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unsigned int QVideo::bytesppForFormat(ImageFormat fmt)
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{
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switch (fmt) {
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case FORMAT_RGB32:
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case FORMAT_RGB24:
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case FORMAT_BGR32:
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case FORMAT_BGR24:
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return 4;
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case FORMAT_RGB15_LE:
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case FORMAT_RGB16_LE:
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case FORMAT_RGB15_BE:
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case FORMAT_RGB16_BE:
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case FORMAT_YUYV:
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case FORMAT_UYVY:
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case FORMAT_YUV422P:
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case FORMAT_YUV420P:
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return 2;
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case FORMAT_GREY:
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case FORMAT_HI240:
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return 1;
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default:
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// unknown format
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return 0;
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}
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}
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bool QVideo::findDisplayProperties(ImageFormat& fmt, int& depth, unsigned int& bitsperpixel, int& bytesperpixel)
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{
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XVisualInfo *vi_in, vi_out;
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long mask = VisualScreenMask;
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int nvis = 0;
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ImageFormat p = FORMAT_NONE;
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int bpp = 0;
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int d = 0;
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vi_out.screen = QPaintDevice::x11AppScreen();
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vi_in = XGetVisualInfo(qt_xdisplay(), mask, &vi_out, &nvis);
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if (vi_in) {
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for (int i = 0; i < nvis; i++) {
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bpp = 0;
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int n;
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XPixmapFormatValues *pf = XListPixmapFormats(qt_xdisplay(),&n);
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d = vi_in[i].depth;
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for (int j = 0; j < n; j++) {
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if (pf[j].depth == d) {
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bpp = pf[j].bits_per_pixel;
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break;
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}
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}
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XFree(pf);
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// FIXME: Endianess detection
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p = FORMAT_NONE;
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switch (bpp) {
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case 32:
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if (vi_in[i].red_mask == 0xff0000 &&
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vi_in[i].green_mask == 0x00ff00 &&
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vi_in[i].blue_mask == 0x0000ff) {
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p = FORMAT_BGR32;
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kdDebug() << "QVideo: Found BGR32 display." << endl;
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}
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break;
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case 24:
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if (vi_in[i].red_mask == 0xff0000 &&
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vi_in[i].green_mask == 0x00ff00 &&
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vi_in[i].blue_mask == 0x0000ff) {
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p = FORMAT_BGR24;
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kdDebug() << "QVideo: Found BGR24 display." << endl;
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}
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break;
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case 16:
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if (vi_in[i].red_mask == 0x00f800 &&
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vi_in[i].green_mask == 0x0007e0 &&
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vi_in[i].blue_mask == 0x00001f) {
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p = FORMAT_RGB15_LE;
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kdDebug() << "QVideo: Found RGB16_LE display." << endl;
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} else
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if (vi_in[i].red_mask == 0x007c00 &&
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vi_in[i].green_mask == 0x0003e0 &&
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vi_in[i].blue_mask == 0x00001f) {
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p = FORMAT_RGB15_LE;
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kdDebug() << "QVideo: Found RGB15_LE display." << endl;
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}
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break;
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case 8:
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default:
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continue;
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}
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if (p != FORMAT_NONE)
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break;
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}
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XFree(vi_in);
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}
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if (p != FORMAT_NONE) {
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int bytespp = bytesppForFormat(p);
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kdDebug() << "QVideo: Display properties: depth: " << d
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<< ", bits/pixel: " << bpp
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<< ", bytes/pixel: " << bytespp << endl;
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fmt = p;
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bitsperpixel = bpp;
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bytesperpixel = bytespp;
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depth = d;
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return true;
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} else {
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kdWarning() << "QVideo: Unable to find out palette. What display do you have????" << endl;
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fmt = FORMAT_NONE;
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bitsperpixel = 0;
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bytesperpixel = 0;
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depth = 0;
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return false;
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}
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}
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