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

content/common/gpu/media/v4l2_video_encode_accelerator.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_ENCODE_ACCELERATOR_H_
 #define CONTENT_COMMON_GPU_MEDIA_V4L2_VIDEO_ENCODE_ACCELERATOR_H_
 
 #include <linux/videodev2.h>
 #include <list>
 #include <vector>
@@ skipping 24 matching lines @@
 // This class handles video encode acceleration by interfacing with a V4L2
 // device exposed by the codec hardware driver. The threading model of this
 // class is the same as in the V4L2VideoDecodeAccelerator (from which class this
 // was designed).
 // This class may try to instantiate and use a V4L2ImageProcessor for input
 // format conversion, if the input format requested via Initialize() is not
 // accepted by the hardware codec.
 class CONTENT_EXPORT V4L2VideoEncodeAccelerator
     : public media::VideoEncodeAccelerator {
  public:
-  explicit V4L2VideoEncodeAccelerator(scoped_ptr<V4L2Device> device);
+  explicit V4L2VideoEncodeAccelerator(scoped_refptr<V4L2Device> device);
   virtual ~V4L2VideoEncodeAccelerator();
 
   // media::VideoEncodeAccelerator implementation.
   virtual std::vector<media::VideoEncodeAccelerator::SupportedProfile>
       GetSupportedProfiles() override;
   virtual bool Initialize(media::VideoFrame::Format format,
                           const gfx::Size& input_visible_size,
                           media::VideoCodecProfile output_profile,
                           uint32 initial_bitrate,
                           Client* client) override;
@@ skipping 91 matching lines @@
   // The device task.
   void DevicePollTask(bool poll_device);
 
   //
   // Safe from any thread.
   //
 
   // Error notification (using PostTask() to child thread, if necessary).
   void NotifyError(Error error);
 
-  // Set the encoder_thread_ state (using PostTask to encoder thread, if
-  // necessary).
-  void SetEncoderState(State state);
+  // Set the encoder_state_ to kError and notify the client (if necessary).
+  void SetErrorState(Error error);
 
   //
   // Other utility functions.  Called on encoder_thread_, unless
   // encoder_thread_ is not yet started, in which case the child thread can call
   // these (e.g. in Initialize() or Destroy()).
   //
 
   // Change encoding parameters.
   void RequestEncodingParametersChangeTask(uint32 bitrate, uint32 framerate);
 
@@ skipping 48 matching lines @@
 
   // We need to provide the stream header with every keyframe, to allow
   // midstream decoding restarts.  Store it here.
   scoped_ptr<uint8[]> stream_header_;
   size_t stream_header_size_;
 
   // Video frames ready to be encoded.
   std::list<scoped_refptr<media::VideoFrame> > encoder_input_queue_;
 
   // Encoder device.
-  scoped_ptr<V4L2Device> device_;
+  scoped_refptr<V4L2Device> device_;
 
   // Input queue state.
   bool input_streamon_;
   // Input buffers enqueued to device.
   int input_buffer_queued_count_;
   // Input buffers ready to use; LIFO since we don't care about ordering.
   std::vector<int> free_input_buffers_;
   // Mapping of int index to input buffer record.
   std::vector<InputRecord> input_buffer_map_;
   enum v4l2_memory input_memory_type_;
@@ skipping 34 matching lines @@
   // as both threads will not outlive this object.
   base::WeakPtr<V4L2VideoEncodeAccelerator> weak_this_;
   base::WeakPtrFactory<V4L2VideoEncodeAccelerator> weak_this_ptr_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(V4L2VideoEncodeAccelerator);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_COMMON_GPU_MEDIA_V4L2_VIDEO_ENCODE_ACCELERATOR_H_