Add mailbox-based Mojo VideoFrame variant.

media/mojo/interfaces/media_types.mojom

 // Copyright 2014 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.
 
 module media.mojom;
 
+import "gpu/ipc/common/mailbox_holder.mojom";
+import "mojo/common/time.mojom";
 import "ui/gfx/geometry/mojo/geometry.mojom";
-import "mojo/common/time.mojom";
 
 // See media/base/buffering_state.h for descriptions.
 [Native]
 enum BufferingState;
 
 // See media/base/decode_status.h for descriptions.
 [Native]
 enum DecodeStatus;
 
 // See media/base/audio_codecs.h for descriptions.
@@ skipping 151 matching lines @@
 
   // Natural size of the frame.
   gfx.mojom.Size natural_size;
 
   // True if end of stream.
   bool end_of_stream;
 
   // Timestamp in microseconds of the associated frame.
   mojo.common.mojom.TimeDelta timestamp;
 
+  // Contents of the video frame.
+  VideoFrameData data;
+};
+
+// Possible choices for storing VideoFrame data.
+union VideoFrameData {
+  SharedBufferVideoFrameData shared_buffer_data;
+  MailboxVideoFrameData mailbox_data;
+};
+
+// This defines video frame data stored in a Mojo shared buffer.
+struct SharedBufferVideoFrameData {
   // Reference to the shared memory containing the frame's data.
   handle<shared_buffer> frame_data;
   uint64 frame_data_size;
 
   // Stride and offsets for each plane. Offsets are relative to the start
   // of |frame_data|.
   int32 y_stride;
   int32 u_stride;
   int32 v_stride;
   uint64 y_offset;
   uint64 u_offset;
   uint64 v_offset;
 };
 
+// This defines video frame data stored in texture mailboxes.
+struct MailboxVideoFrameData {
+  array<gpu.mojom.MailboxHolder> mailbox_holder;
+};
+
 struct PipelineStatistics {
   uint64 audio_bytes_decoded;
   uint64 video_bytes_decoded;
   uint32 video_frames_decoded;
   uint32 video_frames_dropped;
   int64 audio_memory_usage;
   int64 video_memory_usage;
 };