Add DRM_PRIME Format Handling and Display for RockChip MPP decoders

This commit allows to use the AV_PIX_FMT_DRM_PRIME newly introduced
format in ffmpeg that allows decoders to provide an AVDRMFrameDescriptor
struct.

That struct holds dmabuf fds and information allowing zerocopy rendering
using KMS / DRM Atomic.

This has been tested on RockChip ROCK64 device.

1 files changed, 55 insertions, 0 deletions

diff --git a/video/out/drm_atomic.h b/video/out/drm_atomic.h
new file mode 100644
index 0000000000..d0ebdb910e
--- /dev/null
+++ b/video/out/drm_atomic.h
@@ -0,0 +1,55 @@
+/*
+ * This file is part of mpv.
+ *
+ * mpv is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * mpv is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with mpv.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#ifndef MP_DRMATOMIC_H
+#define MP_DRMATOMIC_H
+
+#include <stdlib.h>
+#include <xf86drm.h>
+#include <xf86drmMode.h>
+
+#include "common/msg.h"
+
+struct drm_object {
+    uint32_t id;
+    uint32_t type;
+    drmModeObjectProperties *props;
+    drmModePropertyRes **props_info;
+};
+
+struct drm_atomic_context {
+    int fd;
+
+    struct drm_object *crtc;
+    struct drm_object *primary_plane;
+    struct drm_object *overlay_plane;
+
+    drmModeAtomicReq *request;
+};
+
+
+int drm_object_create_properties(struct mp_log *log, int fd, struct drm_object *object);
+void drm_object_free_properties(struct drm_object *object);
+int drm_object_get_property(struct drm_object *object, char *name, uint64_t *value);
+int drm_object_set_property(drmModeAtomicReq *request, struct drm_object *object, char *name, uint64_t value);
+struct drm_object * drm_object_create(struct mp_log *log, int fd, uint32_t object_id, uint32_t type);
+void drm_object_free(struct drm_object *object);
+void drm_object_print_info(struct mp_log *log, struct drm_object *object);
+struct drm_atomic_context *drm_atomic_create_context(struct mp_log *log, int fd, int crtc_id, int overlay_id);
+void drm_atomic_destroy_context(struct drm_atomic_context *ctx);
+
+#endif // MP_DRMATOMIC_H