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/*
* Schism Tracker - a cross-platform Impulse Tracker clone
* copyright (c) 2003-2005 Storlek <storlek@rigelseven.com>
* copyright (c) 2005-2008 Mrs. Brisby <mrs.brisby@nimh.org>
* copyright (c) 2009 Storlek & Mrs. Brisby
* copyright (c) 2010-2012 Storlek
* URL: http://schismtracker.org/
*
* 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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
#include "headers.h"
#include <X11/X.h>
#include <X11/Xlib.h>
#include <X11/extensions/Xvlib.h>
#ifndef HAVE_X11_EXTENSIONS_XVLIB_H
# error what
#endif
#include "sdlmain.h"
#include "video.h"
#include "osdefs.h"
unsigned int xv_yuvlayout(void)
{
unsigned int ver, rev, eventB, reqB, errorB;
XvImageFormatValues *formats;
XvAdaptorInfo *ainfo;
XvEncodingInfo *encodings;
SDL_SysWMinfo info;
Display *dpy;
unsigned int nencode, nadaptors;
unsigned int fmt = VIDEO_YUV_NONE;
int numImages;
int screen, nscreens, img;
unsigned int adaptor, enc;
unsigned int w, h;
unsigned int best;
memset(&info, 0, sizeof(info));
SDL_VERSION(&info.version);
if (SDL_GetWMInfo(&info)) {
dpy = info.info.x11.display;
} else {
dpy = NULL;
printf("sdl_getwminfo?\n");
}
if (!dpy) {
#if 0
/* this never closes the display, thus causing a memleak
(and we can't reasonably call XCloseDisplay ourselves) */
dpy = XOpenDisplay(NULL);
if (!dpy)
return VIDEO_YUV_NONE;
#else
return VIDEO_YUV_NONE;
#endif
}
ver = rev = reqB = eventB = errorB = 0;
if (XvQueryExtension(dpy, &ver, &rev, &reqB, &eventB, &errorB) != Success) {
/* no XV support */
return VIDEO_YUV_NONE;
}
nscreens = ScreenCount(dpy);
w = h = 0;
for (screen = 0; screen < nscreens; screen++) {
XvQueryAdaptors(dpy, RootWindow(dpy, screen), &nadaptors, &ainfo);
for (adaptor = 0; adaptor < nadaptors; adaptor++) {
XvQueryEncodings(dpy, ainfo[adaptor].base_id, &nencode, &encodings);
best = nencode; // impossible value
for (enc = 0; enc < nencode; enc++) {
if (strcmp(encodings[enc].name, "XV_IMAGE") != 0)
continue;
if (encodings[enc].width > w || encodings[enc].height > h) {
w = encodings[enc].width;
h = encodings[enc].height;
best = enc;
}
}
XvFreeEncodingInfo(encodings);
if (best == nencode || w < 640 || h < 400)
continue;
formats = XvListImageFormats(dpy, ainfo[adaptor].base_id, &numImages);
for (img = 0; img < numImages; img++) {
if (formats[img].type == XvRGB) continue;
if (w < 1280 || h < 400) {
/* not enough xv memory for packed */
switch (formats[img].id) {
case VIDEO_YUV_YV12:
fmt = VIDEO_YUV_YV12_TV;
break;
case VIDEO_YUV_IYUV:
fmt = VIDEO_YUV_IYUV_TV;
break;
}
continue;
}
switch (formats[img].id) {
case VIDEO_YUV_UYVY:
case VIDEO_YUV_YUY2:
case VIDEO_YUV_YVYU:
/* a packed format, and we have enough memory... */
fmt = formats[img].id;
XFree(formats);
XvFreeAdaptorInfo(ainfo);
return fmt;
case VIDEO_YUV_YV12:
case VIDEO_YUV_IYUV:
fmt = formats[img].id;
break;
}
}
XFree(formats);
}
XvFreeAdaptorInfo(ainfo);
}
return fmt;
}
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