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 CAMERA_SOURCE_H_ 18 19 #define CAMERA_SOURCE_H_ 20 21 #include <media/stagefright/MediaBuffer.h> 22 #include <media/stagefright/MediaSource.h> 23 #include <utils/List.h> 24 #include <utils/RefBase.h> 25 #include <utils/threads.h> 26 27 namespace android { 28 29 class ICamera; 30 class IMemory; 31 class Camera; 32 33 class CameraSource : public MediaSource, public MediaBufferObserver { 34 public: 35 static CameraSource *Create(); 36 static CameraSource *CreateFromCamera(const sp<Camera> &camera); 37 38 virtual ~CameraSource(); 39 40 virtual status_t start(MetaData *params = NULL); 41 virtual status_t stop(); 42 43 virtual sp<MetaData> getFormat(); 44 45 virtual status_t read( 46 MediaBuffer **buffer, const ReadOptions *options = NULL); 47 48 virtual void signalBufferReturned(MediaBuffer* buffer); 49 50 private: 51 friend class CameraSourceListener; 52 53 sp<Camera> mCamera; 54 sp<MetaData> mMeta; 55 56 Mutex mLock; 57 Condition mFrameAvailableCondition; 58 Condition mFrameCompleteCondition; 59 List<sp<IMemory> > mFramesReceived; 60 List<sp<IMemory> > mFramesBeingEncoded; 61 List<int64_t> mFrameTimes; 62 63 int64_t mStartTimeUs; 64 int64_t mFirstFrameTimeUs; 65 int64_t mLastFrameTimestampUs; 66 int32_t mNumFramesReceived; 67 int32_t mNumFramesEncoded; 68 int32_t mNumFramesDropped; 69 int32_t mNumGlitches; 70 int64_t mGlitchDurationThresholdUs; 71 bool mCollectStats; 72 bool mStarted; 73 74 CameraSource(const sp<Camera> &camera); 75 76 void dataCallbackTimestamp( 77 int64_t timestampUs, int32_t msgType, const sp<IMemory> &data); 78 79 void releaseQueuedFrames(); 80 void releaseOneRecordingFrame(const sp<IMemory>& frame); 81 82 CameraSource(const CameraSource &); 83 CameraSource &operator=(const CameraSource &); 84 }; 85 86 } // namespace android 87 88 #endif // CAMERA_SOURCE_H_ 89
