1 /* 2 * Copyright (C) 2011 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 DUMMY_AUDIOSOURCE_H_ 18 19 #define DUMMY_AUDIOSOURCE_H_ 20 21 #include <utils/RefBase.h> 22 #include <utils/threads.h> 23 #include <media/stagefright/MediaBufferGroup.h> 24 #include <media/stagefright/MediaSource.h> 25 #include <media/stagefright/DataSource.h> 26 27 28 namespace android { 29 30 31 class MediaBuffer; 32 class MetaData; 33 struct MediaBufferGroup; 34 35 36 37 struct DummyAudioSource : public MediaSource { 38 39 public: 40 static sp<DummyAudioSource> Create(int32_t samplingRate, 41 int32_t channelCount, 42 int64_t frameDurationUs, 43 int64_t audioDurationUs); 44 virtual status_t start(MetaData *params = NULL); 45 virtual status_t stop(); 46 virtual sp<MetaData> getFormat(); 47 virtual status_t read (MediaBuffer **buffer, 48 const MediaSource::ReadOptions *options = NULL); 49 void setDuration (int64_t audioDurationUs); 50 51 protected: 52 DummyAudioSource (int32_t samplingRate, 53 int32_t channelCount, 54 int64_t frameDurationUs, 55 int64_t audioDurationUs); 56 virtual ~DummyAudioSource(); 57 58 private: 59 int32_t mSamplingRate; 60 int32_t mChannelCount; 61 int64_t mFrameDurationUs; 62 int32_t mNumberOfSamplePerFrame; 63 int64_t mAudioDurationUs; 64 int64_t mTimeStampUs; 65 Mutex mLock; 66 67 MediaBufferGroup *mBufferGroup; 68 69 DummyAudioSource(const DummyAudioSource &); 70 DummyAudioSource &operator=(const DummyAudioSource &); 71 72 }; 73 74 }//namespace android 75 76 77 #endif //DUMMY_AUDIOSOURCE_H_ 78 79