Add accelerated video decoder interface, VP8 and H.264 implementations and hook up to V4L2SVDA.

content/common/gpu/media/v4l2_image_processor.h

 // 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.
 
 #ifndef CONTENT_COMMON_GPU_MEDIA_V4L2_VIDEO_PROCESSOR_H_
 #define CONTENT_COMMON_GPU_MEDIA_V4L2_VIDEO_PROCESSOR_H_
 
 #include <queue>
 #include <vector>
 
 #include "base/memory/linked_ptr.h"
+#include "base/memory/ref_counted.h"
 #include "base/memory/weak_ptr.h"
 #include "base/threading/thread.h"
 #include "content/common/content_export.h"
 #include "content/common/gpu/media/v4l2_video_device.h"
 #include "media/base/video_frame.h"
 
 namespace content {
 
 // Handles image processing accelerators that expose a V4L2 memory-to-memory
 // interface. The threading model of this class is the same as for other V4L2
 // hardware accelerators (see V4L2VideoDecodeAccelerator) for more details.
 class CONTENT_EXPORT V4L2ImageProcessor {
  public:
-  explicit V4L2ImageProcessor(scoped_ptr<V4L2Device> device);
+  explicit V4L2ImageProcessor(const scoped_refptr<V4L2Device>& device);
   virtual ~V4L2ImageProcessor();
 
   // Initializes the processor to convert from |input_format| to |output_format|
   // and/or scale from |input_visible_size| to |output_visible_size|.
   // Request the output buffers to be of at least |output_allocated_size|.
   // Provided |error_cb| will be called if an error occurs.
   // Return true if the requested configuration is supported.
   bool Initialize(media::VideoFrame::Format input_format,
                   media::VideoFrame::Format output_format,
                   gfx::Size input_visible_size,
@@ skipping 93 matching lines @@
   uint32 input_format_fourcc_;
   uint32 output_format_fourcc_;
 
   size_t input_planes_count_;
   size_t output_planes_count_;
 
   // Our original calling message loop for the child thread.
   const scoped_refptr<base::MessageLoopProxy> child_message_loop_proxy_;
 
   // V4L2 device in use.
-  scoped_ptr<V4L2Device> device_;
+  scoped_refptr<V4L2Device> device_;
 
   // Thread to communicate with the device on.
   base::Thread device_thread_;
   // Thread used to poll the V4L2 for events only.
   base::Thread device_poll_thread_;
 
   // All the below members are to be accessed from device_thread_ only
   // (if it's running).
   std::queue<linked_ptr<JobRecord> > input_queue_;
   std::queue<linked_ptr<JobRecord> > running_jobs_;
@@ skipping 21 matching lines @@
 
   // Weak factory for producing weak pointers on the device_thread_
   base::WeakPtrFactory<V4L2ImageProcessor> device_weak_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(V4L2ImageProcessor);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_COMMON_GPU_MEDIA_V4L2_VIDEO_PROCESSOR_H_