IAudioFlingerClient.cpp revision d24b8183b93e781080b2c16c487e60d51c12da31
1/* 2 * Copyright (C) 2009 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17#define LOG_TAG "IAudioFlingerClient" 18#include <utils/Log.h> 19 20#include <stdint.h> 21#include <sys/types.h> 22 23#include <utils/Parcel.h> 24 25#include <media/IAudioFlingerClient.h> 26 27namespace android { 28 29enum { 30 AUDIO_OUTPUT_CHANGED = IBinder::FIRST_CALL_TRANSACTION 31}; 32 33class BpAudioFlingerClient : public BpInterface<IAudioFlingerClient> 34{ 35public: 36 BpAudioFlingerClient(const sp<IBinder>& impl) 37 : BpInterface<IAudioFlingerClient>(impl) 38 { 39 } 40 41 void audioOutputChanged(uint32_t frameCount, uint32_t samplingRate, uint32_t latency) 42 { 43 Parcel data, reply; 44 data.writeInterfaceToken(IAudioFlingerClient::getInterfaceDescriptor()); 45 data.writeInt32(frameCount); 46 data.writeInt32(samplingRate); 47 data.writeInt32(latency); 48 remote()->transact(AUDIO_OUTPUT_CHANGED, data, &reply); 49 } 50}; 51 52IMPLEMENT_META_INTERFACE(AudioFlingerClient, "android.media.IAudioFlingerClient"); 53 54// ---------------------------------------------------------------------- 55 56#define CHECK_INTERFACE(interface, data, reply) \ 57 do { if (!data.enforceInterface(interface::getInterfaceDescriptor())) { \ 58 LOGW("Call incorrectly routed to " #interface); \ 59 return PERMISSION_DENIED; \ 60 } } while (0) 61 62status_t BnAudioFlingerClient::onTransact( 63 uint32_t code, const Parcel& data, Parcel* reply, uint32_t flags) 64{ 65 switch(code) { 66 case AUDIO_OUTPUT_CHANGED: { 67 CHECK_INTERFACE(IAudioFlingerClient, data, reply); 68 uint32_t frameCount = data.readInt32(); 69 uint32_t samplingRate = data.readInt32(); 70 uint32_t latency = data.readInt32(); 71 audioOutputChanged(frameCount, samplingRate, latency); 72 return NO_ERROR; 73 } break; 74 default: 75 return BBinder::onTransact(code, data, reply, flags); 76 } 77} 78 79// ---------------------------------------------------------------------------- 80 81}; // namespace android 82