media: Create Mojo StructTraits for VideoFrame

media/mojo/interfaces/video_frame_struct_traits.h

+// Copyright 2017 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#ifndef MEDIA_MOJO_INTERFACES_VIDEO_FRAME_STRUCT_TRAITS_H_
+#define MEDIA_MOJO_INTERFACES_VIDEO_FRAME_STRUCT_TRAITS_H_
+
+#include "base/memory/ref_counted.h"
+#include "gpu/ipc/common/mailbox_holder_struct_traits.h"
+#include "media/base/ipc/media_param_traits_macros.h"
+#include "media/base/video_frame.h"
+#include "media/mojo/interfaces/media_types.mojom.h"
+#include "mojo/common/common_custom_types_struct_traits.h"
+#include "mojo/public/cpp/bindings/struct_traits.h"
+#include "ui/gfx/geometry/mojo/geometry_struct_traits.h"
+
+namespace mojo {
+
+template <>
+struct StructTraits<media::mojom::VideoFrameDataView,
+                    scoped_refptr<media::VideoFrame>> {
+  static void* SetUpContext(const scoped_refptr<media::VideoFrame>& input);
+
+  static void TearDownContext(const scoped_refptr<media::VideoFrame>&,
+                              void* context);
+
+  static bool IsNull(const scoped_refptr<media::VideoFrame>& input) {
+    return !input;
+  }
+
+  static void SetToNull(scoped_refptr<media::VideoFrame>* input) {
+    *input = nullptr;
+  }
+
+  static media::VideoPixelFormat format(
+      const scoped_refptr<media::VideoFrame>& input) {
+    return input->format();
+  }
+
+  static const gfx::Size& coded_size(
+      const scoped_refptr<media::VideoFrame>& input) {
+    return input->coded_size();
+  }
+
+  static const gfx::Rect& visible_rect(
+      const scoped_refptr<media::VideoFrame>& input) {
+    return input->visible_rect();
+  }
+
+  static const gfx::Size& natural_size(
+      const scoped_refptr<media::VideoFrame>& input) {
+    return input->natural_size();
+  }
+
+  static bool end_of_stream(const scoped_refptr<media::VideoFrame>& input) {
+    return input->metadata()->IsTrue(media::VideoFrameMetadata::END_OF_STREAM);
+  }
+
+  static base::TimeDelta timestamp(
+      const scoped_refptr<media::VideoFrame>& input) {
+    return input->timestamp();
+  }
+
+  static media::mojom::VideoFrameDataPtr& data(
+      const scoped_refptr<media::VideoFrame>& input,
+      void* context);
+
+  static bool Read(media::mojom::VideoFrameDataView input,
+                   scoped_refptr<media::VideoFrame>* output);
+};
+
+}  // namespace mojo
+
+#endif  // MEDIA_MOJO_INTERFACES_VIDEO_FRAME_STRUCT_TRAITS_H_