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Diffstat (limited to 'xdriinfo.c')
| -rw-r--r-- | xdriinfo.c | 184 |
1 files changed, 184 insertions, 0 deletions
diff --git a/xdriinfo.c b/xdriinfo.c new file mode 100644 index 0000000..7d788e3 --- /dev/null +++ b/xdriinfo.c @@ -0,0 +1,184 @@ +/* + * Client application for querying drivers' configuration information + * Copyright (C) 2003 Felix Kuehling + * + * Permission is hereby granted, free of charge, to any person obtaining a + * copy of this software and associated documentation files (the "Software"), + * to deal in the Software without restriction, including without limitation + * the rights to use, copy, modify, merge, publish, distribute, sublicense, + * and/or sell copies of the Software, and to permit persons to whom the + * Software is furnished to do so, subject to the following conditions: + * + * The above copyright notice and this permission notice shall be included + * in all copies or substantial portions of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS + * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, + * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL + * FELIX KUEHLING, OR ANY OTHER CONTRIBUTORS BE LIABLE FOR ANY CLAIM, + * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR + * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE + * OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. + * + */ + +#include <GL/glx.h> +#include <X11/Xlib.h> +#include <stdio.h> +#include <unistd.h> +#include <string.h> + +typedef const char * glXGetScreenDriver_t (Display *dpy, int scrNum); +typedef const char * glXGetDriverConfig_t (const char *driverName); + +glXGetScreenDriver_t *GetScreenDriver; +glXGetDriverConfig_t *GetDriverConfig; + +enum INFO_FUNC { + LIST, NSCREENS, DRIVER, OPTIONS +}; + +void printUsage (void); + +void printUsage (void) { + fprintf (stderr, +"Usage: xdriinfo [-display <dpy>] [command]\n" +"Commands:\n" +" nscreens print the number of screens on display\n" +" driver screen print the DRI driver name of screen\n" +" options screen|driver print configuration information about screen or driver\n" +"If no command is given then the DRI drivers for all screens are listed.\n"); +} + +int main (int argc, char *argv[]) { + Display *dpy; + int nScreens, screenNum, i; + enum INFO_FUNC func = LIST; + char *funcArg = NULL; + char *dpyName = NULL; + + GetScreenDriver = (glXGetScreenDriver_t *)glXGetProcAddress ("glXGetScreenDriver"); + GetDriverConfig = (glXGetDriverConfig_t *)glXGetProcAddress ("glXGetDriverConfig"); + if (!GetScreenDriver || !GetDriverConfig) { + fprintf (stderr, "libGL is too old.\n"); + return 1; + } + + /* parse the command line */ + for (i = 1; i < argc; ++i) { + char **argPtr = NULL; + if (!strcmp (argv[i], "-display")) + argPtr = &dpyName; + else if (!strcmp (argv[i], "nscreens")) + func = NSCREENS; + else if (!strcmp (argv[i], "driver")) { + func = DRIVER; + argPtr = &funcArg; + } else if (!strcmp (argv[i], "options")) { + func = OPTIONS; + argPtr = &funcArg; + } else { + printUsage (); + return 1; + } + if (argPtr) { + if (++i == argc) { + printUsage (); + return 1; + } + *argPtr = argv[i]; + } + } + + /* parse screen number argument */ + if (func == DRIVER || func == OPTIONS) { + if (sscanf (funcArg, "%i", &screenNum) != 1) + screenNum = -1; + else if (screenNum < 0) { + fprintf (stderr, "Negative screen number \"%s\".\n", funcArg); + return 1; + } + } + /* if the argument to the options command is a driver name, we can handle + * it without opening an X connection */ + if (func == OPTIONS && screenNum == -1) { + const char *options = (*GetDriverConfig) (funcArg); + if (!options) { + fprintf (stderr, + "Driver \"%s\" is not installed or does not support configuration.\n", + funcArg); + return 1; + } + printf ("%s", options); + if (isatty (STDOUT_FILENO)) + printf ("\n"); + return 0; + } + /* driver command needs a valid screen number */ + else if (func == DRIVER && screenNum == -1) { + fprintf (stderr, "Invalid screen number \"%s\".\n", funcArg); + return 1; + } + + /* open display and count the number of screens */ + if (!(dpy = XOpenDisplay (dpyName))) { + fprintf (stderr, "Error: Couldn't open display\n"); + return 1; + } + nScreens = ScreenCount (dpy); + + /* final check on the screen number argument (if any)*/ + if ((func == DRIVER || func == OPTIONS) && screenNum >= nScreens) { + fprintf (stderr, "Screen number \"%d\" out of range.\n", screenNum); + return 1; + } + + switch (func) { + case NSCREENS: + printf ("%d", nScreens); + if (isatty (STDOUT_FILENO)) + printf ("\n"); + break; + case DRIVER: { + const char *name = (*GetScreenDriver) (dpy, screenNum); + if (!name) { + fprintf (stderr, "Screen \"%d\" is not direct rendering capable.\n", + screenNum); + return 1; + } + printf ("%s", name); + if (isatty (STDOUT_FILENO)) + printf ("\n"); + break; + } + case OPTIONS: { + const char *name = (*GetScreenDriver) (dpy, screenNum), *options; + if (!name) { + fprintf (stderr, "Screen \"%d\" is not direct rendering capable.\n", + screenNum); + return 1; + } + options = (*GetDriverConfig) (name); + if (!options) { + fprintf (stderr, + "Driver \"%s\" is not installed or does not support configuration.\n", + name); + return 1; + } + printf ("%s", options); + if (isatty (STDOUT_FILENO)) + printf ("\n"); + break; + } + case LIST: + for (i = 0; i < nScreens; ++i) { + const char *name = (*GetScreenDriver) (dpy, i); + if (name) + printf ("Screen %d: %s\n", i, name); + else + printf ("Screen %d: not direct rendering capable.\n", i); + } + } + + return 0; +} |