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 AAC_WRITER_H_ 18 #define AAC_WRITER_H_ 19 20 #include <media/stagefright/MediaWriter.h> 21 #include <utils/threads.h> 22 23 namespace android { 24 25 struct MediaSource; 26 struct MetaData; 27 28 struct AACWriter : public MediaWriter { 29 AACWriter(const char *filename); 30 AACWriter(int fd); 31 32 status_t initCheck() const; 33 34 virtual status_t addSource(const sp<MediaSource> &source); 35 virtual bool reachedEOS(); 36 virtual status_t start(MetaData *params = NULL); 37 virtual status_t stop() { return reset(); } 38 virtual status_t pause(); 39 40 protected: 41 virtual ~AACWriter(); 42 43 private: 44 enum { 45 kAdtsHeaderLength = 7, // # of bytes for the adts header 46 kSamplesPerFrame = 1024, // # of samples in a frame 47 }; 48 49 int mFd; 50 status_t mInitCheck; 51 sp<MediaSource> mSource; 52 bool mStarted; 53 volatile bool mPaused; 54 volatile bool mResumed; 55 volatile bool mDone; 56 volatile bool mReachedEOS; 57 pthread_t mThread; 58 int64_t mEstimatedSizeBytes; 59 int64_t mEstimatedDurationUs; 60 int32_t mChannelCount; 61 int32_t mSampleRate; 62 int32_t mAACProfile; 63 int32_t mFrameDurationUs; 64 65 static void *ThreadWrapper(void *); 66 status_t threadFunc(); 67 bool exceedsFileSizeLimit(); 68 bool exceedsFileDurationLimit(); 69 status_t writeAdtsHeader(uint32_t frameLength); 70 status_t reset(); 71 72 DISALLOW_EVIL_CONSTRUCTORS(AACWriter); 73 }; 74 75 } // namespace android 76 77 #endif // AAC_WRITER_H_ 78
