1 /* 2 * Copyright (C) 2012 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 #ifndef ANDROID_EXTENDED_AUDIO_BUFFER_PROVIDER_H 18 #define ANDROID_EXTENDED_AUDIO_BUFFER_PROVIDER_H 19 20 #include <media/AudioBufferProvider.h> 21 #include <media/AudioTimestamp.h> 22 23 namespace android { 24 25 class ExtendedAudioBufferProvider : public AudioBufferProvider { 26 public: 27 virtual size_t framesReady() const = 0; // see description at AudioFlinger.h 28 29 // Return the total number of frames that have been obtained and released 30 virtual size_t framesReleased() const { return 0; } 31 32 // Invoked by buffer consumer when a new timestamp is available. 33 // Default implementation ignores the timestamp. 34 virtual void onTimestamp(const AudioTimestamp& timestamp) { } 35 }; 36 37 } // namespace android 38 39 #endif // ANDROID_EXTENDED_AUDIO_BUFFER_PROVIDER_H 40
