mirror of https://github.com/intel/libva-utils.git
137 lines
3.6 KiB
C
137 lines
3.6 KiB
C
/*
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* Copyright (c) 2012 Intel Corporation. All Rights Reserved.
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*
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* Permission is hereby granted, free of charge, to any person obtaining a
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* copy of this software and associated documentation files (the
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* "Software"), to deal in the Software without restriction, including
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* without limitation the rights to use, copy, modify, merge, publish,
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* distribute, sub license, and/or sell copies of the Software, and to
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* permit persons to whom the Software is furnished to do so, subject to
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* the following conditions:
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*
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* The above copyright notice and this permission notice (including the
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* next paragraph) shall be included in all copies or substantial portions
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* of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
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* OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
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* IN NO EVENT SHALL PRECISION INSIGHT AND/OR ITS SUPPLIERS BE LIABLE FOR
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* ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
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* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
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* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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*/
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <unistd.h>
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#include <fcntl.h>
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#ifdef IN_LIBVA
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# include "va/drm/va_drm.h"
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#else
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# include <va/va_drm.h>
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#endif
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#include <xf86drm.h>
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#include "va_display.h"
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#include <sys/utsname.h>
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static int drm_fd = -1;
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extern const char *g_device_name;
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static VADisplay
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va_open_display_drm(void)
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{
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VADisplay va_dpy;
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int i;
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drmVersionPtr version;
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static const char *drm_device_paths[] = {
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"/dev/dri/renderD128",
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"/dev/dri/card0",
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"/dev/dri/renderD129",
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"/dev/dri/card1",
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NULL
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};
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if (g_device_name) {
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drm_fd = open(g_device_name, O_RDWR);
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if (drm_fd < 0) {
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printf("Failed to open the given device!\n");
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exit(1);
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return NULL;
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}
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va_dpy = vaGetDisplayDRM(drm_fd);
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if (va_dpy)
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return va_dpy;
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printf("Failed to a DRM display for the given device\n");
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close(drm_fd);
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drm_fd = -1;
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exit(1);
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return NULL;
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}
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for (i = 0; drm_device_paths[i]; i++) {
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drm_fd = open(drm_device_paths[i], O_RDWR);
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if (drm_fd < 0)
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continue;
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version = drmGetVersion(drm_fd);
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if (!version) {
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close(drm_fd);
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continue;
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}
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/* On normal Linux platforms we do not want vgem.
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* Yet Windows subsystem for linux uses vgem,
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* while also providing a fallback VA driver.
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* See https://github.com/intel/libva/pull/688
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*/
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struct utsname sysinfo = {};
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if (!strncmp(version->name, "vgem", 4) && (uname(&sysinfo) >= 0) &&
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!strstr(sysinfo.release, "WSL")) {
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drmFreeVersion(version);
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close(drm_fd);
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continue;
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}
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drmFreeVersion(version);
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va_dpy = vaGetDisplayDRM(drm_fd);
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if (va_dpy)
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return va_dpy;
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close(drm_fd);
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drm_fd = -1;
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}
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return NULL;
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}
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static void
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va_close_display_drm(VADisplay va_dpy)
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{
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if (drm_fd < 0)
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return;
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close(drm_fd);
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drm_fd = -1;
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}
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static VAStatus
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va_put_surface_drm(
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VADisplay va_dpy,
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VASurfaceID surface,
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const VARectangle *src_rect,
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const VARectangle *dst_rect
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)
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{
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return VA_STATUS_ERROR_OPERATION_FAILED;
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}
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const VADisplayHooks va_display_hooks_drm = {
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"drm",
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va_open_display_drm,
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va_close_display_drm,
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va_put_surface_drm,
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};
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