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 // TODO(dalecurtis, yzshen): PPAPI shouldn't hard code these values for all 19 // clients. 20 const int kBitsPerAudioOutputSample = 16; 21 const int kAudioOutputChannels = 2; 22 23 class PPAPI_SHARED_EXPORT PPB_AudioConfig_Shared 24 : public Resource, 25 public thunk::PPB_AudioConfig_API { 26 public: 27 virtual ~PPB_AudioConfig_Shared(); 28 29 static PP_Resource Create(ResourceObjectType type, 30 PP_Instance instance, 31 PP_AudioSampleRate sample_rate, 32 uint32_t sample_frame_count); 33 static uint32_t RecommendSampleFrameCount_1_0(PP_AudioSampleRate sample_rate, 34 uint32_t request_sample_frame_count); 35 static uint32_t RecommendSampleFrameCount_1_1(PP_Instance instance, 36 PP_AudioSampleRate sample_rate, 37 uint32_t request_sample_frame_count); 38 static PP_AudioSampleRate RecommendSampleRate(PP_Instance); 39 40 // Resource overrides. 41 virtual thunk::PPB_AudioConfig_API* AsPPB_AudioConfig_API() OVERRIDE; 42 43 // PPB_AudioConfig_API implementation. 44 virtual PP_AudioSampleRate GetSampleRate() OVERRIDE; 45 virtual uint32_t GetSampleFrameCount() OVERRIDE; 46 47 private: 48 // You must call Init before using this object. 49 PPB_AudioConfig_Shared(ResourceObjectType type, PP_Instance instance); 50 51 // Returns false if the arguments are invalid, the object should not be 52 // used in this case. 53 bool Init(PP_AudioSampleRate sample_rate, uint32_t sample_frame_count); 54 55 PP_AudioSampleRate sample_rate_; 56 uint32_t sample_frame_count_; 57 58 DISALLOW_COPY_AND_ASSIGN(PPB_AudioConfig_Shared); 59 }; 60 61 } // namespace ppapi 62 63 #endif // PPAPI_SHARED_IMPL_PPB_AUDIO_CONFIG_SHARED_H_ 64
