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#ifndef AMR_NB_ENCODER_H_ 18 19#define AMR_NB_ENCODER_H_ 20 21#include <media/stagefright/MediaSource.h> 22#include <media/stagefright/MetaData.h> 23 24namespace android { 25 26struct MediaBufferGroup; 27 28struct AMRNBEncoder : public MediaSource { 29 AMRNBEncoder(const sp<MediaSource> &source, const sp<MetaData> &meta); 30 31 virtual status_t start(MetaData *params); 32 virtual status_t stop(); 33 34 virtual sp<MetaData> getFormat(); 35 36 virtual status_t read( 37 MediaBuffer **buffer, const ReadOptions *options); 38 39protected: 40 virtual ~AMRNBEncoder(); 41 42private: 43 sp<MediaSource> mSource; 44 sp<MetaData> mMeta; 45 bool mStarted; 46 47 MediaBufferGroup *mBufferGroup; 48 49 void *mEncState; 50 void *mSidState; 51 int64_t mAnchorTimeUs; 52 int64_t mNumFramesOutput; 53 54 MediaBuffer *mInputBuffer; 55 int mMode; 56 57 int16_t mInputFrame[160]; 58 int32_t mNumInputSamples; 59 60 AMRNBEncoder(const AMRNBEncoder &); 61 AMRNBEncoder &operator=(const AMRNBEncoder &); 62}; 63 64} // namespace android 65 66#endif // AMR_NB_ENCODER_H_ 67