ESQueue.h revision f56afa4878694803a44d1b0e9a54762d1d5ab652
1/* 2 * Copyright (C) 2010 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 ES_QUEUE_H_ 18 19#define ES_QUEUE_H_ 20 21#include <media/stagefright/foundation/ABase.h> 22#include <utils/Errors.h> 23#include <utils/List.h> 24#include <utils/RefBase.h> 25 26namespace android { 27 28struct ABuffer; 29struct MetaData; 30 31struct ElementaryStreamQueue { 32 enum Mode { 33 H264, 34 AAC, 35 MPEG_AUDIO, 36 MPEG_VIDEO, 37 MPEG4_VIDEO, 38 }; 39 40 enum Flags { 41 // Data appended to the queue is always at access unit boundaries. 42 kFlag_AlignedData = 1, 43 }; 44 ElementaryStreamQueue(Mode mode, uint32_t flags = 0); 45 46 status_t appendData(const void *data, size_t size, int64_t timeUs); 47 void clear(bool clearFormat); 48 49 sp<ABuffer> dequeueAccessUnit(); 50 51 sp<MetaData> getFormat(); 52 53private: 54 struct RangeInfo { 55 int64_t mTimestampUs; 56 size_t mLength; 57 }; 58 59 Mode mMode; 60 uint32_t mFlags; 61 62 sp<ABuffer> mBuffer; 63 List<RangeInfo> mRangeInfos; 64 65 sp<MetaData> mFormat; 66 67 sp<ABuffer> dequeueAccessUnitH264(); 68 sp<ABuffer> dequeueAccessUnitAAC(); 69 sp<ABuffer> dequeueAccessUnitMPEGAudio(); 70 sp<ABuffer> dequeueAccessUnitMPEGVideo(); 71 sp<ABuffer> dequeueAccessUnitMPEG4Video(); 72 73 // consume a logical (compressed) access unit of size "size", 74 // returns its timestamp in us (or -1 if no time information). 75 int64_t fetchTimestamp(size_t size); 76 77 DISALLOW_EVIL_CONSTRUCTORS(ElementaryStreamQueue); 78}; 79 80} // namespace android 81 82#endif // ES_QUEUE_H_ 83