| Dharmaray Kundargi | 643290d | 2011-01-16 16:02:42 -0800 | [diff] [blame^] | 1 | /*
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| 2 | * Copyright (C) 2011 NXP Software
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| 3 | * Copyright (C) 2011 The Android Open Source Project
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| 4 | *
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| 5 | * Licensed under the Apache License, Version 2.0 (the "License");
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| 6 | * you may not use this file except in compliance with the License.
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| 7 | * You may obtain a copy of the License at
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| 8 | *
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| 9 | * http://www.apache.org/licenses/LICENSE-2.0
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| 10 | *
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| 11 | * Unless required by applicable law or agreed to in writing, software
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| 12 | * distributed under the License is distributed on an "AS IS" BASIS,
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| 13 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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| 14 | * See the License for the specific language governing permissions and
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| 15 | * limitations under the License.
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| 16 | */
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| 17 |
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| 18 | #include <utils/RefBase.h>
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| 19 | #include <media/stagefright/MediaErrors.h>
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| 20 |
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| 21 | #include <media/stagefright/MediaSource.h>
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| 22 | #include <media/stagefright/MediaBuffer.h>
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| 23 | #include <media/stagefright/MediaBufferGroup.h>
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| 24 | #include <media/stagefright/MediaDefs.h>
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| 25 |
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| 26 | #include "AudioBufferProvider.h"
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| 27 | #include "AudioResampler.h"
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| 28 |
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| 29 | namespace android {
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| 30 | //struct MediaSource;
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| 31 |
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| 32 |
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| 33 | class VideoEditorSRC : public MediaSource , public AudioBufferProvider {
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| 34 |
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| 35 | public:
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| 36 | VideoEditorSRC(
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| 37 | const sp<MediaSource> &source);
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| 38 |
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| 39 | virtual status_t start (MetaData *params = NULL);
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| 40 | virtual status_t stop();
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| 41 | virtual sp<MetaData> getFormat();
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| 42 | virtual status_t read (
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| 43 | MediaBuffer **buffer, const ReadOptions *options = NULL);
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| 44 |
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| 45 | virtual status_t getNextBuffer(Buffer* buffer);
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| 46 | virtual void releaseBuffer(Buffer* buffer);
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| 47 |
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| 48 | void setResampling(int32_t sampleRate=kFreq32000Hz);
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| 49 |
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| 50 | enum { //Sampling freq
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| 51 | kFreq8000Hz = 8000,
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| 52 | kFreq11025Hz = 11025,
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| 53 | kFreq12000Hz = 12000,
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| 54 | kFreq16000Hz = 16000,
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| 55 | kFreq22050Hz = 22050,
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| 56 | kFreq240000Hz = 24000,
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| 57 | kFreq32000Hz = 32000,
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| 58 | kFreq44100 = 44100,
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| 59 | kFreq48000 = 48000,
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| 60 | };
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| 61 |
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| 62 | static const uint16_t UNITY_GAIN = 0x1000;
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| 63 | static const int32_t DEFAULT_SAMPLING_FREQ = (int32_t)kFreq32000Hz; // kFreq44100;
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| 64 |
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| 65 | protected :
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| 66 | virtual ~VideoEditorSRC();
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| 67 | private:
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| 68 |
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| 69 | VideoEditorSRC();
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| 70 | VideoEditorSRC &operator=(const VideoEditorSRC &);
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| 71 |
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| 72 | AudioResampler *mResampler;
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| 73 | AudioBufferProvider *mbufferProvider;
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| 74 | sp<MediaSource> mSource;
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| 75 | MediaBuffer *mCopyBuffer;
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| 76 | MediaBufferGroup *mGroup;
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| 77 | uint8_t *mInputByteBuffer;
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| 78 | int32_t mInputBufferLength;
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| 79 | int mInputFrameSize;
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| 80 | int mBitDepth;
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| 81 | int mChannelCnt;
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| 82 | int mSampleRate;
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| 83 | int32_t mOutputSampleRate;
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| 84 | bool mStarted;
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| 85 | bool mIsResamplingRequired;
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| 86 | bool mIsChannelConvertionRequired; // for mono to stereo
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| 87 | sp<MetaData> mOutputFormat;
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| 88 | Mutex mLock;
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| 89 | int32_t *pTmpBuffer;
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| 90 |
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| 91 | uint8_t* pInterframeBuffer;
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| 92 | int32_t mInterframeBufferPosition;
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| 93 | int32_t mLeftover;
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| 94 | int32_t mLastReadSize ;
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| 95 |
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| 96 | int64_t mInitialTimeStampUs;
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| 97 | int64_t mAccuOutBufferSize;
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| 98 |
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| 99 | int64_t mSeekTimeUs;
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| 100 | ReadOptions::SeekMode mSeekMode;
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| 101 |
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| 102 | };
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| 103 |
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| 104 | } //namespce android
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| 105 |
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