diff options
Diffstat (limited to 'src/sys/x11/xv.c')
| -rw-r--r-- | src/sys/x11/xv.c | 139 |
1 files changed, 139 insertions, 0 deletions
diff --git a/src/sys/x11/xv.c b/src/sys/x11/xv.c new file mode 100644 index 0000000..1a275e8 --- /dev/null +++ b/src/sys/x11/xv.c @@ -0,0 +1,139 @@ +/* + * 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; +} + |