Pass GpuMemoryBuffer backed VideoFrame from browser to renderer processes

content/browser/renderer_host/media/video_capture_buffer_pool.h

 // Copyright (c) 2013 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 CONTENT_BROWSER_RENDERER_HOST_MEDIA_VIDEO_CAPTURE_BUFFER_POOL_H_
 #define CONTENT_BROWSER_RENDERER_HOST_MEDIA_VIDEO_CAPTURE_BUFFER_POOL_H_
 
 #include <map>
 
 #include "base/basictypes.h"
@@ skipping 33 matching lines @@
 class CONTENT_EXPORT VideoCaptureBufferPool
     : public base::RefCountedThreadSafe<VideoCaptureBufferPool> {
  public:
   static const int kInvalidId;
 
   // Abstraction of a pool's buffer data buffer and size for clients.
   // TODO(emircan): See https://crbug.com/521059, refactor this class.
   class BufferHandle {
    public:
     virtual ~BufferHandle() {}
-    virtual size_t size() const = 0;
+    virtual gfx::Size dimensions() const = 0;
+    virtual size_t mapped_size() const = 0;
     virtual void* data(int plane) = 0;
     virtual ClientBuffer AsClientBuffer(int plane) = 0;
 #if defined(OS_POSIX)
     virtual base::FileDescriptor AsPlatformFile() = 0;
 #endif
   };
 
   explicit VideoCaptureBufferPool(int count);
 
   // One-time (per client/per-buffer) initialization to share a particular
-  // buffer to a process. The size of the allocation is returned as
-  // |memory_size|.
-  base::SharedMemoryHandle ShareToProcess(int buffer_id,
-                                          base::ProcessHandle process_handle,
-                                          size_t* memory_size);
+  // buffer to a process. The shared handle is returned as |new_handle|.
+  bool ShareToProcess(int buffer_id,
+                      int plane,
+                      base::ProcessHandle process_handle,
+                      void* new_handle);
 
   // Try and obtain a BufferHandle for |buffer_id|.
   scoped_ptr<BufferHandle> GetBufferHandle(int buffer_id);
 
   // Reserve or allocate a buffer to support a packed frame of |dimensions| of
   // pixel |format| and return its id. This will fail (returning kInvalidId) if
   // the pool already is at its |count| limit of the number of allocations, and
   // all allocated buffers are in use by the producer and/or consumers.
   //
   // If successful, the reserved buffer remains reserved (and writable by the
@@ skipping 57 matching lines @@
       storage_type_ = storage_type;
     }
     bool held_by_producer() const { return held_by_producer_; }
     void set_held_by_producer(bool value) { held_by_producer_ = value; }
     int consumer_hold_count() const { return consumer_hold_count_; }
     void set_consumer_hold_count(int value) { consumer_hold_count_ = value; }
 
     // Returns a handle to the underlying storage, be that a block of Shared
     // Memory, or a GpuMemoryBuffer.
     virtual scoped_ptr<BufferHandle> GetBufferHandle() = 0;
-    // The actual size of the underlying backing resource.
-    virtual size_t mapped_size() const = 0;
 
-    virtual bool ShareToProcess(base::ProcessHandle process_handle,
-                                base::SharedMemoryHandle* new_handle) = 0;
+    virtual bool ShareToProcess(int plane,
+                                base::ProcessHandle process_handle,
+                                void* new_handle) = 0;
 
    private:
     size_t pixel_count_;
     media::VideoCapturePixelFormat pixel_format_;
     media::VideoPixelStorage storage_type_;
     // Indicates whether this Tracker is currently referenced by the producer.
     bool held_by_producer_;
     // Number of consumer processes which hold this Tracker.
     int consumer_hold_count_;
   };
@@ skipping 20 matching lines @@
   // The buffers, indexed by the first parameter, a buffer id.
   using TrackerMap = std::map<int, Tracker*>;
   TrackerMap trackers_;
 
   DISALLOW_IMPLICIT_CONSTRUCTORS(VideoCaptureBufferPool);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_BROWSER_RENDERER_HOST_MEDIA_VIDEO_CAPTURE_BUFFER_POOL_H_