testmodifier-blob

2 files changed, 46 insertions, 0 deletions

diff --git a/drm-atomic.c b/drm-atomic.c
index c06e52fb25..a659e3574c 100644
--- a/drm-atomic.c
+++ b/drm-atomic.c
@@ -331,6 +331,8 @@ const struct drm * init_drm_atomic(const char *device)
 		return NULL;
 
 	ret = drmSetClientCap(drm.fd, DRM_CLIENT_CAP_ATOMIC, 1);
+	ret = !ret &&
+		drmSetClientCap(drm.fd, DRM_CLIENT_CAP_UNIVERSAL_PLANES, 1);
 	if (ret) {
 		printf("no atomic modesetting support: %s\n", strerror(errno));
 		return NULL;
@@ -387,6 +389,49 @@ const struct drm * init_drm_atomic(const char *device)
 	get_properties(crtc, CRTC, drm.crtc_id);
 	get_properties(connector, CONNECTOR, drm.connector_id);
 
+struct in_format_blob_v1 {
+        /* Version of this blob format */
+        uint32_t version;
+
+        /* Number of fourcc formats supported */
+        uint64_t count_formats;
+
+        /* Where in this blob the formats exist (in bytes) */
+        uint32_t formats_offset;
+
+        /* Array of fourcc formats supported */
+        uint32_t fourcc[0];
+
+        /* Number of drm_format_modifiers */
+        uint64_t modifier_count;
+
+        /* Where in this blob the modifiers exist (in bytes) */
+        uint32_t modifier_offset;
+
+        /* Per modifier supported formats - for each modifier supported by the
+         * plane to which this blob is attached, which formats can be used with
+         * that modifiers
+         */
+	struct drm_format_modifier {
+		uint64_t formats;
+		uint32_t offset;
+		uint32_t pad;
+		uint64_t modifier;
+	} modifiers[0];
+} __attribute__ ((__packed__));
+
+	for (int i = 0; i < (int)drm.plane->props->count_props; i++) {
+		if (!strcmp(drm.plane->props_info[i]->name, "IN_FORMATS")) {
+			drmModePropertyBlobPtr blob =
+				drmModeGetPropertyBlob(drm.fd, drm.plane->props->prop_values[i]);
+
+			struct in_format_blob_v1 *m = blob->data;
+			for (int j = 0; i < (int)m->count_formats; m++) {
+				printf("0x%x\n", m->fourcc[j]);
+			}
+		}
+	}
+
 	drm.run = atomic_run;
 
 	return &drm;
diff --git a/drm-common.c b/drm-common.c
index eb460df192..8d7fab13a5 100644
--- a/drm-common.c
+++ b/drm-common.c
@@ -26,6 +26,7 @@
 #include <stdio.h>
 #include <stdlib.h>
 #include <string.h>
+#include <assert.h>
 
 #include "common.h"
 #include "drm-common.h"