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, 33 insertions, 0 deletions

diff --git a/video/out/drm_prime.h b/video/out/drm_prime.h
new file mode 100644
index 0000000000..0653fdbebf
--- /dev/null
+++ b/video/out/drm_prime.h
@@ -0,0 +1,33 @@
+/*
+ * 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 DRM_PRIME_H
+#define DRM_PRIME_H
+
+#include <libavutil/hwcontext_drm.h>
+
+#include "common/msg.h"
+
+struct drm_prime_framebuffer {
+    uint32_t fb_id;
+    uint32_t gem_handles[AV_DRM_MAX_PLANES];
+};
+
+int drm_prime_create_framebuffer(struct mp_log *log, int fd, AVDRMFrameDescriptor *descriptor, int width, int height,
+                                  struct  drm_prime_framebuffer *framebuffers);
+void drm_prime_destroy_framebuffer(struct mp_log *log, int fd, struct  drm_prime_framebuffer *framebuffers);
+#endif // DRM_PRIME_H