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_ADTS_EXTRACTOR_H_ 18 #define AAC_ADTS_EXTRACTOR_H_ 19 20 #include <utils/Vector.h> 21 22 #include <media/stagefright/foundation/ABuffer.h> 23 #include <media/stagefright/foundation/ADebug.h> 24 #include <media/stagefright/DataSource.h> 25 #include <media/stagefright/MediaBufferGroup.h> 26 #include <media/stagefright/MediaDefs.h> 27 #include <media/stagefright/MediaErrors.h> 28 #include <media/stagefright/MediaExtractor.h> 29 #include <media/stagefright/MediaSource.h> 30 #include <media/stagefright/MetaData.h> 31 #include <utils/String8.h> 32 33 namespace android { 34 35 struct AMessage; 36 class String8; 37 38 39 class AacAdtsSource : public MediaSource { 40 public: 41 AacAdtsSource(const sp<DataSource> &source, 42 const sp<MetaData> &meta, 43 //const Vector<uint64_t> &offset_vector, 44 int64_t frame_duration_us); 45 46 virtual status_t start(MetaData *params = NULL); 47 virtual status_t stop(); 48 49 virtual sp<MetaData> getFormat(); 50 51 virtual status_t read( 52 MediaBuffer **buffer, const ReadOptions *options = NULL); 53 54 protected: 55 virtual ~AacAdtsSource(); 56 57 private: 58 static const size_t kMaxFrameSize; 59 sp<DataSource> mDataSource; 60 sp<MetaData> mMeta; 61 62 off64_t mOffset; 63 int64_t mCurrentTimeUs; 64 bool mStarted; 65 MediaBufferGroup *mGroup; 66 67 int64_t mFrameDurationUs; 68 69 AacAdtsSource(const AacAdtsSource &); 70 AacAdtsSource &operator=(const AacAdtsSource &); 71 }; 72 73 74 class AacAdtsExtractor : public MediaExtractor { 75 public: 76 explicit AacAdtsExtractor(const sp<DataSource> &source); 77 78 virtual size_t countTracks(); 79 virtual sp<IMediaSource> getTrack(size_t index); 80 virtual sp<MetaData> getTrackMetaData(size_t index, uint32_t flags); 81 82 virtual sp<MetaData> getMetaData(); 83 84 protected: 85 virtual ~AacAdtsExtractor(); 86 87 private: 88 sp<DataSource> mDataSource; 89 sp<MetaData> mMeta; 90 status_t mInitCheck; 91 92 int64_t mFrameDurationUs; 93 94 AacAdtsExtractor(const AacAdtsExtractor &); 95 AacAdtsExtractor &operator=(const AacAdtsExtractor &); 96 97 }; 98 99 } // namespace android 100 101 #endif // AAC_ADTS_EXTRACTOR_H_ 102