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      1 /*
      2  *  Copyright (c) 2012 The WebRTC project authors. All Rights Reserved.
      3  *
      4  *  Use of this source code is governed by a BSD-style license
      5  *  that can be found in the LICENSE file in the root of the source
      6  *  tree. An additional intellectual property rights grant can be found
      7  *  in the file PATENTS.  All contributing project authors may
      8  *  be found in the AUTHORS file in the root of the source tree.
      9  */
     10 
     11 #ifndef WEBRTC_MODULES_AUDIO_PROCESSING_ECHO_CONTROL_MOBILE_IMPL_H_
     12 #define WEBRTC_MODULES_AUDIO_PROCESSING_ECHO_CONTROL_MOBILE_IMPL_H_
     13 
     14 #include "webrtc/base/criticalsection.h"
     15 #include "webrtc/base/scoped_ptr.h"
     16 #include "webrtc/common_audio/swap_queue.h"
     17 #include "webrtc/modules/audio_processing/include/audio_processing.h"
     18 #include "webrtc/modules/audio_processing/processing_component.h"
     19 
     20 namespace webrtc {
     21 
     22 class AudioBuffer;
     23 
     24 class EchoControlMobileImpl : public EchoControlMobile,
     25                               public ProcessingComponent {
     26  public:
     27   EchoControlMobileImpl(const AudioProcessing* apm,
     28                         rtc::CriticalSection* crit_render,
     29                         rtc::CriticalSection* crit_capture);
     30 
     31   virtual ~EchoControlMobileImpl();
     32 
     33   int ProcessRenderAudio(const AudioBuffer* audio);
     34   int ProcessCaptureAudio(AudioBuffer* audio);
     35 
     36   // EchoControlMobile implementation.
     37   bool is_enabled() const override;
     38   RoutingMode routing_mode() const override;
     39   bool is_comfort_noise_enabled() const override;
     40 
     41   // ProcessingComponent implementation.
     42   int Initialize() override;
     43 
     44   // Reads render side data that has been queued on the render call.
     45   void ReadQueuedRenderData();
     46 
     47  private:
     48   // EchoControlMobile implementation.
     49   int Enable(bool enable) override;
     50   int set_routing_mode(RoutingMode mode) override;
     51   int enable_comfort_noise(bool enable) override;
     52   int SetEchoPath(const void* echo_path, size_t size_bytes) override;
     53   int GetEchoPath(void* echo_path, size_t size_bytes) const override;
     54 
     55   // ProcessingComponent implementation.
     56   // Called holding both the render and capture locks.
     57   void* CreateHandle() const override;
     58   int InitializeHandle(void* handle) const override;
     59   int ConfigureHandle(void* handle) const override;
     60   void DestroyHandle(void* handle) const override;
     61   size_t num_handles_required() const override;
     62   int GetHandleError(void* handle) const override;
     63 
     64   void AllocateRenderQueue();
     65 
     66   // Not guarded as its public API is thread safe.
     67   const AudioProcessing* apm_;
     68 
     69   rtc::CriticalSection* const crit_render_ ACQUIRED_BEFORE(crit_capture_);
     70   rtc::CriticalSection* const crit_capture_;
     71 
     72   RoutingMode routing_mode_ GUARDED_BY(crit_capture_);
     73   bool comfort_noise_enabled_ GUARDED_BY(crit_capture_);
     74   unsigned char* external_echo_path_ GUARDED_BY(crit_render_)
     75       GUARDED_BY(crit_capture_);
     76 
     77   size_t render_queue_element_max_size_ GUARDED_BY(crit_render_)
     78       GUARDED_BY(crit_capture_);
     79 
     80   std::vector<int16_t> render_queue_buffer_ GUARDED_BY(crit_render_);
     81   std::vector<int16_t> capture_queue_buffer_ GUARDED_BY(crit_capture_);
     82 
     83   // Lock protection not needed.
     84   rtc::scoped_ptr<
     85       SwapQueue<std::vector<int16_t>, RenderQueueItemVerifier<int16_t>>>
     86       render_signal_queue_;
     87 };
     88 }  // namespace webrtc
     89 
     90 #endif  // WEBRTC_MODULES_AUDIO_PROCESSING_ECHO_CONTROL_MOBILE_IMPL_H_
     91