H264 HW encode using VideoToolbox

media/cast/sender/h264_vt_encoder.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 MEDIA_CAST_SENDER_H264_VT_ENCODER_H_
 #define MEDIA_CAST_SENDER_H264_VT_ENCODER_H_
 
 #include <stdint.h>
 
 #include "base/mac/scoped_cftyperef.h"
 #include "base/macros.h"
 #include "base/power_monitor/power_observer.h"
 #include "base/threading/thread_checker.h"
 #include "media/base/mac/videotoolbox_glue.h"
+#include "media/base/mac/videotoolbox_helpers.h"
 #include "media/cast/sender/size_adaptable_video_encoder_base.h"
 #include "media/cast/sender/video_encoder.h"
 
 namespace media {
 namespace cast {
 
 // VideoToolbox implementation of the media::cast::VideoEncoder interface.
 // VideoToolbox makes no guarantees that it is thread safe, so this object is
 // pinned to the thread on which it is constructed. Supports changing frame
 // sizes directly. Implements the base::PowerObserver interface to reset the
@@ skipping 43 matching lines @@
 
   // Destroy the current compression session if any. Blocks until all pending
   // frames have been flushed out (similar to EmitFrames without doing any
   // encoding work).
   void DestroyCompressionSession();
 
   // Update the encoder's target frame size by resetting the compression
   // session. This will also update the video frame factory.
   void UpdateFrameSize(const gfx::Size& size_needed);
 
-  // Set a compression session property.
-  bool SetSessionProperty(CFStringRef key, int32_t value);
-  bool SetSessionProperty(CFStringRef key, bool value);
-  bool SetSessionProperty(CFStringRef key, CFStringRef value);
-
   // Compression session callback function to handle compressed frames.
   static void CompressionCallback(void* encoder_opaque,
                                   void* request_opaque,
                                   OSStatus status,
                                   VTEncodeInfoFlags info,
                                   CMSampleBufferRef sbuf);
 
   // The cast environment (contains worker threads & more).
   const scoped_refptr<CastEnvironment> cast_environment_;
 
@@ skipping 23 matching lines @@
 
   // The ID of the last frame that was emitted.
   uint32_t last_frame_id_;
 
   // Force next frame to be a keyframe.
   bool encode_next_frame_as_keyframe_;
 
   // Power suspension state.
   bool power_suspended_;
 
+  // Set parameters for VTCompressionSession.
+  scoped_ptr<video_toolbox::SessionPropertySetter> session_property_setter_;

[miu, 2016/02/09 23:29:22]

Please remove (see comment in .cc file).

[emircan, 2016/02/10 05:21:53]

Done.

+
   // NOTE: Weak pointers must be invalidated before all other member variables.
   base::WeakPtrFactory<H264VideoToolboxEncoder> weak_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(H264VideoToolboxEncoder);
 };
 
 }  // namespace cast
 }  // namespace media
 
 #endif  // MEDIA_CAST_SENDER_H264_VT_ENCODER_H_