/*
* va_wayland_drm.c - Wayland/DRM helpers
*
* Copyright (c) 2012 Intel Corporation. All Rights Reserved.
*
* 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, sub license, 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 (including the
* next paragraph) 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 NON-INFRINGEMENT.
* IN NO EVENT SHALL INTEL AND/OR ITS SUPPLIERS 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 "sysdeps.h"
#include <unistd.h>
#include <errno.h>
#include <fcntl.h>
#include <dlfcn.h>
#include <sys/stat.h>
#include <xf86drm.h>
#include "va_drmcommon.h"
#include "drm/va_drm_utils.h"
#include "va_wayland_drm.h"
#include "va_wayland_private.h"
#include "wayland-drm-client-protocol.h"
/* XXX: Wayland/DRM support currently lives in Mesa libEGL.so.* library */
#define LIBWAYLAND_DRM_NAME "libEGL.so.1"
typedef struct va_wayland_drm_context {
struct va_wayland_context base;
void *handle;
struct wl_drm *drm;
struct wl_registry *registry;
void *drm_interface;
unsigned int is_authenticated : 1;
} VADisplayContextWaylandDRM;
static void
drm_handle_device(void *data, struct wl_drm *drm, const char *device)
{
VADisplayContextP const pDisplayContext = data;
VADriverContextP const ctx = pDisplayContext->pDriverContext;
VADisplayContextWaylandDRM * const wl_drm_ctx = pDisplayContext->opaque;
struct drm_state * const drm_state = ctx->drm_state;
drm_magic_t magic;
struct stat st;
if (stat(device, &st) < 0) {
va_wayland_error("failed to identify %s: %s (errno %d)",
device, strerror(errno), errno);
return;
}
if (!S_ISCHR(st.st_mode)) {
va_wayland_error("%s is not a device", device);
return;
}
drm_state->fd = open(device, O_RDWR);
if (drm_state->fd < 0) {
va_wayland_error("failed to open %s: %s (errno %d)",
device, strerror(errno), errno);
return;
}
drmGetMagic(drm_state->fd, &magic);
wl_drm_authenticate(wl_drm_ctx->drm, magic);
}
static void
drm_handle_format(void *data, struct wl_drm *drm, uint32_t format)
{
}
static void
drm_handle_authenticated(void *data, struct wl_drm *drm)
{
VADisplayContextP const pDisplayContext = data;
VADriverContextP const ctx = pDisplayContext->pDriverContext;
VADisplayContextWaylandDRM * const wl_drm_ctx = pDisplayContext->opaque;
struct drm_state * const drm_state = ctx->drm_state;
wl_drm_ctx->is_authenticated = 1;
drm_state->auth_type = VA_DRM_AUTH_CUSTOM;
}
static const struct wl_drm_listener drm_listener = {
drm_handle_device,
drm_handle_format,
drm_handle_authenticated
};
static VAStatus
va_DisplayContextGetDriverName(
VADisplayContextP pDisplayContext,
char **driver_name_ptr
)
{
VADriverContextP const ctx = pDisplayContext->pDriverContext;
return VA_DRM_GetDriverName(ctx, driver_name_ptr);
}
void
va_wayland_drm_destroy(VADisplayContextP pDisplayContext)
{
VADriverContextP const ctx = pDisplayContext->pDriverContext;
struct va_wayland_drm_context * const wl_drm_ctx = pDisplayContext->opaque;
struct drm_state * const drm_state = ctx->drm_state;
if (wl_drm_ctx->drm) {
wl_drm_destroy(wl_drm_ctx->drm);
wl_drm_ctx->drm = NULL;
}
wl_drm_ctx->is_authenticated = 0;
if (wl_drm_ctx->handle) {
dlclose(wl_drm_ctx->handle);
wl_drm_ctx->handle = NULL;
}
if (drm_state) {
if (drm_state->fd >= 0) {
close(drm_state->fd);
drm_state->fd = -1;
}
free(ctx->drm_state);
ctx->drm_state = NULL;
}
}
static void
registry_handle_global(
void *data,
struct wl_registry *registry,
uint32_t id,
const char *interface,
uint32_t version
)
{
struct va_wayland_drm_context *wl_drm_ctx = data;
if (strcmp(interface, "wl_drm") == 0) {
wl_drm_ctx->drm =
wl_registry_bind(wl_drm_ctx->registry, id, wl_drm_ctx->drm_interface, 1);
}
}
static const struct wl_registry_listener registry_listener = {
registry_handle_global,
NULL,
};
bool
va_wayland_drm_create(VADisplayContextP pDisplayContext)
{
VADriverContextP const ctx = pDisplayContext->pDriverContext;
struct va_wayland_drm_context *wl_drm_ctx;
struct drm_state *drm_state;
uint32_t id;
wl_drm_ctx = malloc(sizeof(*wl_drm_ctx));
if (!wl_drm_ctx)
return false;
wl_drm_ctx->base.destroy = va_wayland_drm_destroy;
wl_drm_ctx->handle = NULL;
wl_drm_ctx->drm = NULL;
wl_drm_ctx->drm_interface = NULL;
wl_drm_ctx->is_authenticated = 0;
pDisplayContext->opaque = wl_drm_ctx;
pDisplayContext->vaGetDriverName = va_DisplayContextGetDriverName;
drm_state = calloc(1, sizeof(struct drm_state));
if (!drm_state)
return false;
drm_state->fd = -1;
drm_state->auth_type = 0;
ctx->drm_state = drm_state;
wl_drm_ctx->handle = dlopen(LIBWAYLAND_DRM_NAME, RTLD_LAZY|RTLD_LOCAL);
if (!wl_drm_ctx->handle)
return false;
wl_drm_ctx->drm_interface =
dlsym(wl_drm_ctx->handle, "wl_drm_interface");
if (!wl_drm_ctx->drm_interface)
return false;
wl_drm_ctx->registry = wl_display_get_registry(ctx->native_dpy);
wl_registry_add_listener(wl_drm_ctx->registry, ®istry_listener, wl_drm_ctx);
wl_display_roundtrip(ctx->native_dpy);
/* registry_handle_global should have been called by the
* wl_display_roundtrip above
*/
if (!wl_drm_ctx->drm)
return false;
wl_drm_add_listener(wl_drm_ctx->drm, &drm_listener, pDisplayContext);
wl_display_roundtrip(ctx->native_dpy);
if (drm_state->fd < 0)
return false;
wl_display_roundtrip(ctx->native_dpy);
if (!wl_drm_ctx->is_authenticated)
return false;
return true;
}