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      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