Pass GpuMemoryBuffer backed VideoFrame from browser to renderer processes

content/common/media/video_capture_messages.h

 // Copyright (c) 2012 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.
 
 #include "base/memory/shared_memory.h"
 #include "content/common/content_export.h"
 #include "content/common/media/video_capture.h"
 #include "content/public/common/common_param_traits.h"
 #include "gpu/command_buffer/common/mailbox_holder.h"
 #include "ipc/ipc_message_macros.h"
 #include "media/base/video_capture_types.h"
 #include "media/base/video_frame.h"
+#include "ui/gfx/gpu_memory_buffer.h"
 
 #undef IPC_MESSAGE_EXPORT
 #define IPC_MESSAGE_EXPORT CONTENT_EXPORT
 #define IPC_MESSAGE_START VideoCaptureMsgStart
 
 IPC_ENUM_TRAITS_MAX_VALUE(content::VideoCaptureState,
                           content::VIDEO_CAPTURE_STATE_LAST)
 IPC_ENUM_TRAITS_MAX_VALUE(media::ResolutionChangePolicy,
                           media::RESOLUTION_POLICY_LAST)
 IPC_ENUM_TRAITS_MAX_VALUE(media::VideoPixelFormat, media::PIXEL_FORMAT_MAX)
@@ skipping 10 matching lines @@
 
 IPC_STRUCT_BEGIN(VideoCaptureMsg_BufferReady_Params)
   IPC_STRUCT_MEMBER(int, device_id)
   IPC_STRUCT_MEMBER(int, buffer_id)
   IPC_STRUCT_MEMBER(base::TimeTicks, timestamp)
   IPC_STRUCT_MEMBER(base::DictionaryValue, metadata)
   IPC_STRUCT_MEMBER(media::VideoPixelFormat, pixel_format)
   IPC_STRUCT_MEMBER(media::VideoFrame::StorageType, storage_type)
   IPC_STRUCT_MEMBER(gfx::Size, coded_size)
   IPC_STRUCT_MEMBER(gfx::Rect, visible_rect)
-  IPC_STRUCT_MEMBER(gpu::MailboxHolder, mailbox_holder)
+  IPC_STRUCT_MEMBER(std::vector<gpu::MailboxHolder>, mailbox_holders)
 IPC_STRUCT_END()
 
 // TODO(nick): device_id in these messages is basically just a route_id. We
 // should shift to IPC_MESSAGE_ROUTED and use MessageRouter in the filter impls.
 
 // Notify the renderer process about the state update such as
 // Start/Pause/Stop.
 IPC_MESSAGE_CONTROL2(VideoCaptureMsg_StateChanged,
                      int /* device id */,
                      content::VideoCaptureState /* new state */)
 
 // Tell the renderer process that a new buffer is allocated for video capture.
 IPC_MESSAGE_CONTROL4(VideoCaptureMsg_NewBuffer,
                      int /* device id */,
                      base::SharedMemoryHandle /* handle */,
                      int /* length */,
                      int /* buffer_id */)
 
+// Tell the renderer process that a new GpuMemoryBuffer backed buffer is
+// allocated for video capture.
+IPC_MESSAGE_CONTROL4(VideoCaptureMsg_NewGpuMemoryBuffer,
+                     int /* device id */,
+                     std::vector<gfx::GpuMemoryBufferHandle> /* gmb_handles */,
+                     gfx::Size /* dimensions */,
+                     int /* buffer_id */)
+
 // Tell the renderer process that it should release a buffer previously
 // allocated by VideoCaptureMsg_NewBuffer.
 IPC_MESSAGE_CONTROL2(VideoCaptureMsg_FreeBuffer,
                      int /* device id */,
                      int /* buffer_id */)
 
 // Tell the renderer process that a Buffer is available from video capture, and
 // send the associated VideoFrame constituient parts as IPC parameters.
 IPC_MESSAGE_CONTROL1(VideoCaptureMsg_BufferReady,
                      VideoCaptureMsg_BufferReady_Params)
@@ skipping 42 matching lines @@
 
 // Get the formats supported by a device referenced by |capture_session_id|.
 IPC_MESSAGE_CONTROL2(VideoCaptureHostMsg_GetDeviceSupportedFormats,
                      int /* device_id */,
                      media::VideoCaptureSessionId /* session_id */)
 
 // Get the format(s) in use by a device referenced by |capture_session_id|.
 IPC_MESSAGE_CONTROL2(VideoCaptureHostMsg_GetDeviceFormatsInUse,
                      int /* device_id */,
                      media::VideoCaptureSessionId /* session_id */)