113 lines
3.7 KiB
C
113 lines
3.7 KiB
C
/*
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* va_drm_utils.c - VA/DRM Utilities
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*
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* Copyright (c) 2012 Intel Corporation. All Rights Reserved.
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* Copyright (c) 2023 Emil Velikov
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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 INTEL 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 "sysdeps.h"
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#include <xf86drm.h>
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#include <sys/stat.h>
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#include <sys/utsname.h>
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#include "va_drm_utils.h"
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#include "va_drmcommon.h"
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#define ARRAY_SIZE(arr) (sizeof(arr) / sizeof((arr)[0]))
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static char *
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va_DRM_GetDrmDriverName(int fd)
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{
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drmVersionPtr drm_version = drmGetVersion(fd);
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char *driver_name;
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if (!drm_version)
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return NULL;
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driver_name = strdup(drm_version->name);
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drmFreeVersion(drm_version);
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return driver_name;
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}
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/* Returns the VA driver names and how many they are, for the active display */
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VAStatus
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VA_DRM_GetDriverNames(VADriverContextP ctx, char **drivers, unsigned *num_drivers)
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{
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#define MAX_NAMES 2 // Adjust if needed
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static const struct {
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const char * const drm_driver;
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const char * const va_driver[MAX_NAMES];
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} map[] = {
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{ "xe", { "iHD" } },
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{ "i915", { "iHD", "i965" } }, // Intel Media and OTC GenX
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{ "pvrsrvkm", { "pvr" } }, // Intel UMG PVR
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{ "radeon", { "r600", "radeonsi" } }, // Mesa Gallium
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{ "amdgpu", { "radeonsi" } }, // Mesa Gallium
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{ "WSL", { "d3d12" } }, // Mesa Gallium
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{ "nvidia-drm", { "nvidia" } }, // Unofficial NVIDIA
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};
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const struct drm_state * const drm_state = ctx->drm_state;
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char *drm_driver;
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unsigned count = 0;
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if (!drm_state || drm_state->fd < 0)
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return VA_STATUS_ERROR_INVALID_DISPLAY;
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drm_driver = va_DRM_GetDrmDriverName(drm_state->fd);
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if (!drm_driver)
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return VA_STATUS_ERROR_UNKNOWN;
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/* Map vgem to WSL2 for Windows subsystem for linux */
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struct utsname sysinfo = {};
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if (!strncmp(drm_driver, "vgem", 4) && uname(&sysinfo) >= 0 &&
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strstr(sysinfo.release, "WSL")) {
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free(drm_driver);
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drm_driver = strdup("WSL");
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if (!drm_driver)
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return VA_STATUS_ERROR_UNKNOWN;
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}
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for (unsigned i = 0; i < ARRAY_SIZE(map); i++) {
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if (strcmp(map[i].drm_driver, drm_driver) == 0) {
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const char * const *va_drivers = map[i].va_driver;
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for (; count < MAX_NAMES && va_drivers[count] && count < *num_drivers; count++)
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drivers[count] = strdup(va_drivers[count]);
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break;
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}
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}
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/* Fallback to the drm driver, if there's no va equivalent in the map. */
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if (!count) {
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drivers[count] = drm_driver;
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count++;
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} else {
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free(drm_driver);
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}
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*num_drivers = count;
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return VA_STATUS_SUCCESS;
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}
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