1 /* 2 * Copyright (C) 2012 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 TIMED_TEXT_SOURCE_H_ 18 #define TIMED_TEXT_SOURCE_H_ 19 20 #include <media/stagefright/foundation/ABase.h> // for DISALLOW_XXX macro. 21 #include <media/stagefright/MediaErrors.h> 22 #include <media/stagefright/MediaSource.h> // for MediaSource::ReadOptions 23 #include <utils/RefBase.h> 24 25 namespace android { 26 27 class DataSource; 28 class MetaData; 29 class Parcel; 30 31 class TimedTextSource : public RefBase { 32 public: 33 enum FileType { 34 OUT_OF_BAND_FILE_SRT = 1, 35 OUT_OF_BAND_FILE_SMI = 2, 36 }; 37 static sp<TimedTextSource> CreateTimedTextSource( 38 const sp<MediaSource>& source); 39 static sp<TimedTextSource> CreateTimedTextSource( 40 const sp<DataSource>& source, FileType filetype); 41 TimedTextSource() {} 42 virtual status_t start() = 0; 43 virtual status_t stop() = 0; 44 // Returns subtitle parcel and its start time. 45 virtual status_t read( 46 int64_t *startTimeUs, 47 int64_t *endTimeUs, 48 Parcel *parcel, 49 const MediaSource::ReadOptions *options = NULL) = 0; 50 virtual status_t extractGlobalDescriptions(Parcel *parcel) { 51 return INVALID_OPERATION; 52 } 53 virtual sp<MetaData> getFormat(); 54 55 protected: 56 virtual ~TimedTextSource() { } 57 58 private: 59 DISALLOW_EVIL_CONSTRUCTORS(TimedTextSource); 60 }; 61 62 } // namespace android 63 64 #endif // TIMED_TEXT_SOURCE_H_ 65
