bool CDRMAtomic::AddPlaneProperty(drmModeAtomicReq *req, struct plane *obj, const char *name, int value)
{
int prop_id = -1;
for (unsigned int i = 0 ; i < obj->props->count_props ; i++)
{
if (strcmp(obj->props_info[i]->name, name) == 0)
{
prop_id = obj->props_info[i]->prop_id;
break;
}
}
if (prop_id < 0)
{
CLog::Log(LOGERROR, "CDRMAtomic::%s - no plane property: %s", __FUNCTION__, name);
return false;
}
auto ret = drmModeAtomicAddProperty(req, obj->plane->plane_id, prop_id, value);
if (ret < 0)
{
return false;
}
return true;
}
int drm_object_set_property(drmModeAtomicReq *request, struct drm_object *object,
char *name, uint64_t value)
{
for (int i = 0; i < object->props->count_props; i++) {
if (strcasecmp(name, object->props_info[i]->name) == 0) {
return drmModeAtomicAddProperty(request, object->id,
object->props_info[i]->prop_id, value);
}
}
return -EINVAL;
}
bool CDRMUtils::AddProperty(drmModeAtomicReqPtr req, struct drm_object *object, const char *name, uint64_t value)
{
uint32_t property_id = GetPropertyId(object, name);
if (!property_id)
return false;
if (drmModeAtomicAddProperty(req, object->id, property_id, value) < 0)
{
CLog::Log(LOGERROR, "CDRMUtils::%s - could not add property %s", __FUNCTION__, name);
return false;
}
return true;
}
static int add_crtc_property(drmModeAtomicReq *req, uint32_t obj_id,
const char *name, uint64_t value)
{
struct crtc *obj = drm.crtc;
unsigned int i;
int prop_id = -1;
for (i = 0 ; i < obj->props->count_props ; i++) {
if (strcmp(obj->props_info[i]->name, name) == 0) {
prop_id = obj->props_info[i]->prop_id;
break;
}
}
if (prop_id < 0) {
printf("no crtc property: %s\n", name);
return -EINVAL;
}
return drmModeAtomicAddProperty(req, obj_id, prop_id, value);
}
static void drm_page_flip(struct drm_surface *surface)
{
/* We alredy have the id of the FB_ID property of
* the plane on which we are going to do a pageflip:
* we got it back in drm_plane_setup() */
int ret;
static drmModeAtomicReqPtr req = NULL;
req = drmModeAtomicAlloc();
/* We add the buffer to the plane properties we want to
* set on an atomically, in a single step.
* We pass the plane id, the property id and the new fb id. */
ret = drmModeAtomicAddProperty(req,
drm.plane_id,
drm.plane_fb_prop_id,
surface->pages[surface->flip_page].buf.fb_id);
if (ret < 0)
{
RARCH_ERR ("DRM: failed to add atomic property for pageflip\n");
}
/*... now we just need to do the commit */
/* REMEMBER!!! The DRM_MODE_PAGE_FLIP_EVENT flag asks the kernel
* to send you an event to the drm.fd once the
* pageflip is complete. If you don't want -12 errors
* (ENOMEM), namely "Cannot allocate memory", then
* you must drain the event queue of that fd. */
ret = drmModeAtomicCommit(drm.fd, req, 0, NULL);
if (ret < 0)
{
RARCH_ERR ("DRM: failed to commit for pageflip: %s\n", strerror(errno));
}
surface->flip_page = !(surface->flip_page);
drmModeAtomicFree(req);
}
