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_PROCESSING_COMPONENT_H_
12 #define WEBRTC_MODULES_AUDIO_PROCESSING_PROCESSING_COMPONENT_H_
13 
14 #include <vector>
15 
16 #include "webrtc/common.h"
17 
18 namespace webrtc {
19 
20 // Functor to use when supplying a verifier function for the queue item
21 // verifcation.
22 template <typename T>
23 class RenderQueueItemVerifier {
24  public:
RenderQueueItemVerifier(size_t minimum_capacity)25   explicit RenderQueueItemVerifier(size_t minimum_capacity)
26       : minimum_capacity_(minimum_capacity) {}
27 
operator()28   bool operator()(const std::vector<T>& v) const {
29     return v.capacity() >= minimum_capacity_;
30   }
31 
32  private:
33   size_t minimum_capacity_;
34 };
35 
36 class ProcessingComponent {
37  public:
38   ProcessingComponent();
39   virtual ~ProcessingComponent();
40 
41   virtual int Initialize();
SetExtraOptions(const Config & config)42   virtual void SetExtraOptions(const Config& config) {}
43   virtual int Destroy();
44 
45   bool is_component_enabled() const;
46 
47  protected:
48   virtual int Configure();
49   int EnableComponent(bool enable);
50   void* handle(size_t index) const;
51   size_t num_handles() const;
52 
53  private:
54   virtual void* CreateHandle() const = 0;
55   virtual int InitializeHandle(void* handle) const = 0;
56   virtual int ConfigureHandle(void* handle) const = 0;
57   virtual void DestroyHandle(void* handle) const = 0;
58   virtual size_t num_handles_required() const = 0;
59   virtual int GetHandleError(void* handle) const = 0;
60 
61   std::vector<void*> handles_;
62   bool initialized_;
63   bool enabled_;
64   size_t num_handles_;
65 };
66 
67 }  // namespace webrtc
68 
69 #endif  // WEBRTC_MODULES_AUDIO_PROCESSING_PROCESSING_COMPONENT_H__
70