| /* |
| * Copyright (C) 2010 The Android Open Source Project |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| |
| #ifndef ANOTHER_PACKET_SOURCE_H_ |
| |
| #define ANOTHER_PACKET_SOURCE_H_ |
| |
| #include <media/MediaSource.h> |
| #include <media/stagefright/foundation/ABase.h> |
| #include <utils/threads.h> |
| #include <utils/List.h> |
| |
| #include "ATSParser.h" |
| |
| namespace android { |
| |
| struct ABuffer; |
| |
| struct AnotherPacketSource : public MediaSource { |
| explicit AnotherPacketSource(const sp<MetaData> &meta); |
| |
| void setFormat(const sp<MetaData> &meta); |
| |
| virtual status_t start(MetaData *params = NULL); |
| virtual status_t stop(); |
| virtual sp<MetaData> getFormat(); |
| |
| virtual status_t read( |
| MediaBufferBase **buffer, const ReadOptions *options = NULL); |
| |
| void clear(); |
| |
| // Returns true if we have any packets including discontinuities |
| bool hasBufferAvailable(status_t *finalResult); |
| |
| // Returns true if we have packets that's not discontinuities |
| bool hasDataBufferAvailable(status_t *finalResult); |
| |
| // Returns the number of available buffers. finalResult is always OK |
| // if this method returns non-0, or the final result if it returns 0. |
| size_t getAvailableBufferCount(status_t *finalResult); |
| |
| // Returns the difference between the last and the first queued |
| // presentation timestamps since the last discontinuity (if any). |
| int64_t getBufferedDurationUs(status_t *finalResult); |
| |
| // Returns the difference between the two largest timestamps queued |
| int64_t getEstimatedBufferDurationUs(); |
| |
| status_t nextBufferTime(int64_t *timeUs); |
| |
| void queueAccessUnit(const sp<ABuffer> &buffer); |
| |
| void queueDiscontinuity( |
| ATSParser::DiscontinuityType type, |
| const sp<AMessage> &extra, |
| bool discard); |
| |
| void signalEOS(status_t result); |
| |
| status_t dequeueAccessUnit(sp<ABuffer> *buffer); |
| void requeueAccessUnit(const sp<ABuffer> &buffer); |
| |
| bool isFinished(int64_t duration) const; |
| |
| void enable(bool enable); |
| |
| sp<AMessage> getLatestEnqueuedMeta(); |
| sp<AMessage> getLatestDequeuedMeta(); |
| sp<AMessage> getMetaAfterLastDequeued(int64_t delayUs); |
| |
| void trimBuffersAfterMeta(const sp<AMessage> &meta); |
| sp<AMessage> trimBuffersBeforeMeta(const sp<AMessage> &meta); |
| |
| protected: |
| virtual ~AnotherPacketSource(); |
| |
| private: |
| |
| struct DiscontinuitySegment { |
| int64_t mMaxDequeTimeUs, mMaxEnqueTimeUs; |
| DiscontinuitySegment() |
| : mMaxDequeTimeUs(-1), |
| mMaxEnqueTimeUs(-1) { |
| }; |
| |
| void clear() { |
| mMaxDequeTimeUs = mMaxEnqueTimeUs = -1; |
| } |
| }; |
| |
| // Discontinuity segments are consecutive access units between |
| // discontinuity markers. There should always be at least _ONE_ |
| // discontinuity segment, hence the various CHECKs in |
| // AnotherPacketSource.cpp for non-empty()-ness. |
| List<DiscontinuitySegment> mDiscontinuitySegments; |
| |
| Mutex mLock; |
| Condition mCondition; |
| |
| bool mIsAudio; |
| bool mIsVideo; |
| bool mEnabled; |
| sp<MetaData> mFormat; |
| int64_t mLastQueuedTimeUs; |
| int64_t mEstimatedBufferDurationUs; |
| List<sp<ABuffer> > mBuffers; |
| status_t mEOSResult; |
| sp<AMessage> mLatestEnqueuedMeta; |
| sp<AMessage> mLatestDequeuedMeta; |
| |
| bool wasFormatChange(int32_t discontinuityType) const; |
| |
| DISALLOW_EVIL_CONSTRUCTORS(AnotherPacketSource); |
| }; |
| |
| |
| } // namespace android |
| |
| #endif // ANOTHER_PACKET_SOURCE_H_ |