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/*
* Copyright 2013, 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 RTP_ASSEMBLER_H_
#define RTP_ASSEMBLER_H_
#include "RTPReceiver.h"
namespace android {
// A helper class to reassemble the payload of RTP packets into access
// units depending on the packetization scheme.
struct RTPReceiver::Assembler : public RefBase {
Assembler(const sp<AMessage> ¬ify);
virtual void signalDiscontinuity() = 0;
virtual status_t processPacket(const sp<ABuffer> &packet) = 0;
protected:
virtual ~Assembler() {}
void postAccessUnit(
const sp<ABuffer> &accessUnit, bool followsDiscontinuity);
private:
sp<AMessage> mNotify;
DISALLOW_EVIL_CONSTRUCTORS(Assembler);
};
struct RTPReceiver::TSAssembler : public RTPReceiver::Assembler {
TSAssembler(const sp<AMessage> ¬ify);
virtual void signalDiscontinuity();
virtual status_t processPacket(const sp<ABuffer> &packet);
private:
bool mSawDiscontinuity;
DISALLOW_EVIL_CONSTRUCTORS(TSAssembler);
};
struct RTPReceiver::H264Assembler : public RTPReceiver::Assembler {
H264Assembler(const sp<AMessage> ¬ify);
virtual void signalDiscontinuity();
virtual status_t processPacket(const sp<ABuffer> &packet);
private:
int32_t mState;
uint8_t mIndicator;
uint8_t mNALType;
sp<ABuffer> mAccumulator;
List<sp<ABuffer> > mNALUnits;
int32_t mAccessUnitRTPTime;
status_t internalProcessPacket(const sp<ABuffer> &packet);
void addSingleNALUnit(const sp<ABuffer> &packet);
status_t addSingleTimeAggregationPacket(const sp<ABuffer> &packet);
void flushAccessUnit();
void clearAccumulator();
void appendToAccumulator(const void *data, size_t size);
void reset();
DISALLOW_EVIL_CONSTRUCTORS(H264Assembler);
};
} // namespace android
#endif // RTP_ASSEMBLER_H_
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