1 files changed, 132 insertions, 0 deletions
diff --git a/src/common_present.c b/src/common_present.c
new file mode 100644
index 0000000..44b0427
--- /dev/null
+++ b/src/common_present.c
@@ -0,0 +1,132 @@
+#ifdef HAVE_CONFIG_H
+#include "config.h"
+#endif
+
+#include <xf86drm.h>
+
+#include "common_drm.h"
+#include "common_drm_helper.h"
+
+#include "present.h"
+
+struct common_present_event {
+	struct common_drm_event base;
+	uint64_t event_id;
+	struct xorg_list node;
+};
+
+static struct xorg_list events = { &events, &events };
+
+static void common_present_handler(struct common_drm_event *base,
+	uint64_t msc, unsigned int tv_sec, unsigned int tv_usec)
+{
+	struct common_present_event *event;
+
+	event = container_of(base, struct common_present_event, base);
+
+	if (!xorg_list_is_empty(&event->node)) {
+		present_event_notify(event->event_id,
+				     (uint64_t)tv_sec * 1000000 + tv_usec,
+				     msc);
+
+		xorg_list_del(&event->node);
+	}
+	free(event);
+}
+
+static RRCrtcPtr common_present_get_crtc(WindowPtr window)
+{
+	xf86CrtcPtr crtc = common_drm_drawable_covering_crtc(&window->drawable);
+
+	return crtc ? crtc->randr_crtc : NULL;
+}
+
+static int common_present_get_ust_msc(RRCrtcPtr rr_crtc, uint64_t *ust,
+	uint64_t *msc)
+{
+	xf86CrtcPtr crtc = rr_crtc->devPrivate;
+
+	return common_drm_get_msc(crtc, ust, msc);
+}
+
+static Bool common_present_queue_vblank(RRCrtcPtr rr_crtc, uint64_t event_id,
+	uint64_t msc)
+{
+	xf86CrtcPtr crtc = rr_crtc->devPrivate;
+	struct common_present_event *event;
+	int ret;
+
+	event = calloc(1, sizeof *event);
+	if (!event)
+		return BadAlloc;
+
+	event->base.crtc = crtc;
+	event->base.handler = common_present_handler;
+	event->event_id = event_id;
+
+	ret = common_drm_queue_msc_event(crtc->scrn, crtc, &msc,
+					 __FUNCTION__, FALSE, &event->base);
+	if (ret == 0) {
+		xorg_list_append(&event->node, &events);
+		return Success;
+	}
+
+	free(event);
+
+	return BadMatch; /* FIXME */
+}
+
+static void common_present_abort_vblank(RRCrtcPtr rr_crtc, uint64_t event_id,
+	uint64_t msc)
+{
+	struct common_present_event *event;
+
+	xorg_list_for_each_entry(event, &events, node) {
+		if (event->event_id == event_id) {
+			/*
+			 * Cancel the event by taking it off the events list.
+			 * We still expect DRM to trigger the event.
+			 */
+			xorg_list_del(&event->node);
+			xorg_list_init(&event->node);
+			break;
+		}
+	}
+}
+
+static void common_present_flush(WindowPtr window)
+{
+	/* Flush queued rendering - and wait for it? */
+}
+
+//static Bool common_present_check_flip(RRCrtcPtr crtc, WindowPtr window,
+//	PixmapPtr pixmap, Bool sync_flip)
+//{
+//}
+
+//static Bool common_present_flip(RRCrtcPtr crtc, uint64_t event_id,
+//	uint64_t target_msc, PixmapPtr pixmap, Bool sync_flip)
+//{
+//}
+
+//static void common_present_unflip(ScreenPtr screen, uint64_t event_id)
+//{
+//}
+
+static present_screen_info_rec common_present_screen_info = {
+	.version = PRESENT_SCREEN_INFO_VERSION,
+	.get_crtc = common_present_get_crtc,
+	.get_ust_msc = common_present_get_ust_msc,
+	.queue_vblank = common_present_queue_vblank,
+	.abort_vblank = common_present_abort_vblank,
+	.flush = common_present_flush,
+	.capabilities = PresentCapabilityNone,
+//	.check_flip = common_present_check_flip,
+//	.flip = common_present_flip,
+//	.unflip = common_present_unflip,
+};
+
+Bool common_present_init(ScreenPtr pScreen)
+{
+	return present_screen_init(pScreen, &common_present_screen_info);
+}