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 const int kBitsPerAudioInputSample = 16; 16 const int kAudioInputChannels = 1; 17 18 const int kBitsPerAudioOutputSample = 16; 19 const int kAudioOutputChannels = 2; 20 21 class PPAPI_SHARED_EXPORT PPB_AudioConfig_Shared 22 : public Resource, 23 public thunk::PPB_AudioConfig_API { 24 public: 25 virtual ~PPB_AudioConfig_Shared(); 26 27 static PP_Resource Create(ResourceObjectType type, 28 PP_Instance instance, 29 PP_AudioSampleRate sample_rate, 30 uint32_t sample_frame_count); 31 static uint32_t RecommendSampleFrameCount_1_0(PP_AudioSampleRate sample_rate, 32 uint32_t request_sample_frame_count); 33 static uint32_t RecommendSampleFrameCount_1_1(PP_Instance instance, 34 PP_AudioSampleRate sample_rate, 35 uint32_t request_sample_frame_count); 36 static PP_AudioSampleRate RecommendSampleRate(PP_Instance); 37 38 // Resource overrides. 39 virtual thunk::PPB_AudioConfig_API* AsPPB_AudioConfig_API() OVERRIDE; 40 41 // PPB_AudioConfig_API implementation. 42 virtual PP_AudioSampleRate GetSampleRate() OVERRIDE; 43 virtual uint32_t GetSampleFrameCount() OVERRIDE; 44 45 private: 46 // You must call Init before using this object. 47 PPB_AudioConfig_Shared(ResourceObjectType type, PP_Instance instance); 48 49 // Returns false if the arguments are invalid, the object should not be 50 // used in this case. 51 bool Init(PP_AudioSampleRate sample_rate, uint32_t sample_frame_count); 52 53 PP_AudioSampleRate sample_rate_; 54 uint32_t sample_frame_count_; 55 56 DISALLOW_COPY_AND_ASSIGN(PPB_AudioConfig_Shared); 57 }; 58 59 } // namespace ppapi 60 61 #endif // PPAPI_SHARED_IMPL_PPB_AUDIO_CONFIG_SHARED_H_ 62
