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      1 /*
      2  * Copyright (C) 2007 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_AUDIO_BUFFER_PROVIDER_H
     18 #define ANDROID_AUDIO_BUFFER_PROVIDER_H
     19 
     20 #include <stdint.h>
     21 #include <sys/types.h>
     22 #include <utils/Errors.h>
     23 
     24 namespace android {
     25 // ----------------------------------------------------------------------------
     26 
     27 class AudioBufferProvider
     28 {
     29 public:
     30 
     31     struct Buffer {
     32         union {
     33             void*       raw;
     34             short*      i16;
     35             int8_t*     i8;
     36         };
     37         size_t frameCount;
     38     };
     39 
     40     virtual ~AudioBufferProvider() {}
     41 
     42     virtual status_t getNextBuffer(Buffer* buffer) = 0;
     43     virtual void releaseBuffer(Buffer* buffer) = 0;
     44 };
     45 
     46 // ----------------------------------------------------------------------------
     47 }; // namespace android
     48 
     49 #endif // ANDROID_AUDIO_BUFFER_PROVIDER_H
     50