vp8_impl.cc: Make it possible to base postproc deblocking level for arm on qp.

webrtc/modules/video_coding/codecs/vp8/vp8_impl.h

 /*
  *  Copyright (c) 2012 The WebRTC project authors. All Rights Reserved.
  *
  *  Use of this source code is governed by a BSD-style license
  *  that can be found in the LICENSE file in the root of the source
  *  tree. An additional intellectual property rights grant can be found
  *  in the file PATENTS.  All contributing project authors may
  *  be found in the AUTHORS file in the root of the source tree.
  *
  * WEBRTC VP8 wrapper interface
@@ skipping 117 matching lines @@
              bool missing_frames,
              const RTPFragmentationHeader* fragmentation,
              const CodecSpecificInfo* codec_specific_info,
              int64_t /*render_time_ms*/) override;
 
   int RegisterDecodeCompleteCallback(DecodedImageCallback* callback) override;
   int Release() override;
 
   const char* ImplementationName() const override;
 
+  struct DeblockParams {
+    int level = 6;        // Deblocking strength: [0, 16]

[brandtr, 2017/08/09 10:50:39]

Maybe name this |max_level| ?

nit: period at end of comment.

[åsapersson, 2017/08/09 14:03:27]

Done.

+    int degrade_qp = 80;  // If the QP value is below, start lowering |level|.
+    int min_qp = 40;      // If the QP value is below, turn off deblocking.
+  };
+
  private:
+  class QpSmoother;
   int ReturnFrame(const vpx_image_t* img,
                   uint32_t timeStamp,
                   int64_t ntp_time_ms,
                   int qp);
 
   const bool use_postproc_arm_;
 
   I420BufferPool buffer_pool_;
   DecodedImageCallback* decode_complete_callback_;
   bool inited_;
   vpx_codec_ctx_t* decoder_;
   int propagation_cnt_;
   int last_frame_width_;
   int last_frame_height_;
   bool key_frame_required_;
+  DeblockParams deblock_;
+  const std::unique_ptr<QpSmoother> qp_;

[brandtr, 2017/08/09 10:50:39]

|qp_smoother_| ?

[åsapersson, 2017/08/09 14:03:28]

Done.

 };
 }  // namespace webrtc
 
 #endif  // WEBRTC_MODULES_VIDEO_CODING_CODECS_VP8_VP8_IMPL_H_