ppapi/shared_impl/ppb_audio_config_shared.h

   1 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 #ifndef PPAPI_SHARED_IMPL_PPB_AUDIO_CONFIG_SHARED_H_
   6 #define PPAPI_SHARED_IMPL_PPB_AUDIO_CONFIG_SHARED_H_
   7
   8 #include "base/basictypes.h"
   9 #include "base/compiler_specific.h"
  10 #include "ppapi/shared_impl/resource.h"
  11 #include "ppapi/thunk/ppb_audio_config_api.h"
  12
  13 namespace ppapi {
  14
  15 class PPAPI_SHARED_EXPORT PPB_AudioConfig_Shared
  16     : public Resource,
  17       public thunk::PPB_AudioConfig_API {
  18  public:
  19   virtual ~PPB_AudioConfig_Shared();
  20
  21   static PP_Resource Create(ResourceObjectType type,
  22                             PP_Instance instance,
  23                             PP_AudioSampleRate sample_rate,
  24                             uint32_t sample_frame_count);
  25   static uint32_t RecommendSampleFrameCount_1_0(PP_AudioSampleRate sample_rate,
  26       uint32_t request_sample_frame_count);
  27   static uint32_t RecommendSampleFrameCount_1_1(PP_Instance instance,
  28       PP_AudioSampleRate sample_rate,
  29       uint32_t request_sample_frame_count);
  30   static PP_AudioSampleRate RecommendSampleRate(PP_Instance);
  31
  32   // Resource overrides.
  33   virtual thunk::PPB_AudioConfig_API* AsPPB_AudioConfig_API() OVERRIDE;
  34
  35   // PPB_AudioConfig_API implementation.
  36   virtual PP_AudioSampleRate GetSampleRate() OVERRIDE;
  37   virtual uint32_t GetSampleFrameCount() OVERRIDE;
  38
  39  private:
  40   // You must call Init before using this object.
  41   PPB_AudioConfig_Shared(ResourceObjectType type, PP_Instance instance);
  42
  43   // Returns false if the arguments are invalid, the object should not be
  44   // used in this case.
  45   bool Init(PP_AudioSampleRate sample_rate, uint32_t sample_frame_count);
  46
  47   PP_AudioSampleRate sample_rate_;
  48   uint32_t sample_frame_count_;
  49
  50   DISALLOW_COPY_AND_ASSIGN(PPB_AudioConfig_Shared);
  51 };
  52
  53 }  // namespace ppapi
  54
  55 #endif  // PPAPI_SHARED_IMPL_PPB_AUDIO_CONFIG_SHARED_H_