AACEncoder.h revision 065d1aff96818df54456053f1574aec8a234d0de 
1/*
2 * Copyright (C) 2010 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 AAC_ENCODER_H
18#define AAC_ENCODER_H
19
20#include <media/stagefright/MediaSource.h>
21#include <media/stagefright/MetaData.h>
22
23struct VO_AUDIO_CODECAPI;
24struct VO_MEM_OPERATOR;
25
26namespace android {
27
28struct MediaBufferGroup;
29
30class AACEncoder: public MediaSource {
31    public:
32        AACEncoder(const sp<MediaSource> &source, const sp<MetaData> &meta);
33
34        virtual status_t start(MetaData *params);
35        virtual status_t stop();
36        virtual sp<MetaData> getFormat();
37        virtual status_t read(
38                MediaBuffer **buffer, const ReadOptions *options);
39
40
41    protected:
42        virtual ~AACEncoder();
43
44    private:
45        sp<MediaSource>   mSource;
46        sp<MetaData>      mMeta;
47        bool              mStarted;
48        MediaBufferGroup *mBufferGroup;
49        MediaBuffer      *mInputBuffer;
50        status_t          mInitCheck;
51        int32_t           mSampleRate;
52        int32_t           mChannels;
53        int32_t           mBitRate;
54        int32_t           mFrameCount;
55
56        int64_t           mAnchorTimeUs;
57        int64_t           mNumInputSamples;
58
59        enum {
60            kNumSamplesPerFrame = 1024,
61        };
62
63        int16_t           mInputFrame[kNumSamplesPerFrame];
64
65        uint8_t           mAudioSpecificConfigData[2]; // auido specific data
66        void             *mEncoderHandle;
67        VO_AUDIO_CODECAPI *mApiHandle;
68        VO_MEM_OPERATOR  *mMemOperator;
69
70        status_t setAudioSpecificConfigData();
71        status_t initCheck();
72
73        AACEncoder& operator=(const AACEncoder &rhs);
74        AACEncoder(const AACEncoder& copy);
75
76};
77
78}
79
80#endif  //#ifndef AAC_ENCODER_H
81
82