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 26 namespace android { 27 28 struct ABuffer; 29 class MetaData; 30 31 struct ElementaryStreamQueue { 32 enum Mode { 33 H264, 34 AAC, 35 AC3, 36 MPEG_AUDIO, 37 MPEG_VIDEO, 38 MPEG4_VIDEO, 39 PCM_AUDIO, 40 METADATA, 41 }; 42 43 enum Flags { 44 // Data appended to the queue is always at access unit boundaries. 45 kFlag_AlignedData = 1, 46 }; 47 ElementaryStreamQueue(Mode mode, uint32_t flags = 0); 48 49 status_t appendData(const void *data, size_t size, int64_t timeUs); 50 void signalEOS(); 51 void clear(bool clearFormat); 52 53 sp<ABuffer> dequeueAccessUnit(); 54 55 sp<MetaData> getFormat(); 56 57 private: 58 struct RangeInfo { 59 int64_t mTimestampUs; 60 size_t mLength; 61 }; 62 63 Mode mMode; 64 uint32_t mFlags; 65 bool mEOSReached; 66 67 sp<ABuffer> mBuffer; 68 List<RangeInfo> mRangeInfos; 69 70 sp<MetaData> mFormat; 71 72 sp<ABuffer> dequeueAccessUnitH264(); 73 sp<ABuffer> dequeueAccessUnitAAC(); 74 sp<ABuffer> dequeueAccessUnitAC3(); 75 sp<ABuffer> dequeueAccessUnitMPEGAudio(); 76 sp<ABuffer> dequeueAccessUnitMPEGVideo(); 77 sp<ABuffer> dequeueAccessUnitMPEG4Video(); 78 sp<ABuffer> dequeueAccessUnitPCMAudio(); 79 sp<ABuffer> dequeueAccessUnitMetadata(); 80 81 // consume a logical (compressed) access unit of size "size", 82 // returns its timestamp in us (or -1 if no time information). 83 int64_t fetchTimestamp(size_t size); 84 85 DISALLOW_EVIL_CONSTRUCTORS(ElementaryStreamQueue); 86 }; 87 88 } // namespace android 89 90 #endif // ES_QUEUE_H_ 91