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