diff options
Diffstat (limited to 'media/libaah_rtp/aah_tx_packet.h')
| -rw-r--r-- | media/libaah_rtp/aah_tx_packet.h | 213 |
1 files changed, 213 insertions, 0 deletions
diff --git a/media/libaah_rtp/aah_tx_packet.h b/media/libaah_rtp/aah_tx_packet.h new file mode 100644 index 0000000..7f78ea0 --- /dev/null +++ b/media/libaah_rtp/aah_tx_packet.h @@ -0,0 +1,213 @@ +/* + * Copyright (C) 2011 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 __AAH_TX_PACKET_H__ +#define __AAH_TX_PACKET_H__ + +#include <media/stagefright/foundation/ABase.h> +#include <utils/LinearTransform.h> +#include <utils/RefBase.h> +#include <utils/Timers.h> + +namespace android { + +class TRTPPacket : public RefBase { + public: + enum TRTPHeaderType { + kHeaderTypeAudio = 1, + kHeaderTypeVideo = 2, + kHeaderTypeSubpicture = 3, + kHeaderTypeControl = 4, + }; + + enum TRTPPayloadFlags { + kFlag_TSTransformPresent = 0x02, + kFlag_TSValid = 0x01, + }; + + protected: + TRTPPacket(TRTPHeaderType headerType) + : mIsPacked(false) + , mVersion(2) + , mPadding(false) + , mExtension(false) + , mCsrcCount(0) + , mPayloadType(100) + , mSeqNumber(0) + , mPTSValid(false) + , mPTS(0) + , mEpoch(0) + , mProgramID(0) + , mSubstreamID(0) + , mClockTranformValid(false) + , mTRTPVersion(1) + , mTRTPLength(0) + , mTRTPHeaderType(headerType) + , mPacket(NULL) + , mPacketLen(0) { } + + public: + virtual ~TRTPPacket(); + + void setSeqNumber(uint16_t val); + uint16_t getSeqNumber() const; + + void setPTS(int64_t val); + int64_t getPTS() const; + + void setEpoch(uint32_t val); + void setProgramID(uint16_t val); + void setSubstreamID(uint16_t val); + void setClockTransform(const LinearTransform& trans); + + uint8_t* getPacket() const; + int getPacketLen() const; + + void setExpireTime(nsecs_t val); + nsecs_t getExpireTime() const; + + virtual bool pack() = 0; + + // mask for the number of bits in a TRTP epoch + static const uint32_t kTRTPEpochMask = (1 << 22) - 1; + static const int kTRTPEpochShift = 10; + + protected: + static const int kRTPHeaderLen = 12; + virtual int TRTPHeaderLen() const; + + void writeTRTPHeader(uint8_t*& buf, + bool isFirstFragment, + int totalPacketLen); + + void writeU8(uint8_t*& buf, uint8_t val); + void writeU16(uint8_t*& buf, uint16_t val); + void writeU32(uint8_t*& buf, uint32_t val); + void writeU64(uint8_t*& buf, uint64_t val); + + bool mIsPacked; + + uint8_t mVersion; + bool mPadding; + bool mExtension; + uint8_t mCsrcCount; + uint8_t mPayloadType; + uint16_t mSeqNumber; + bool mPTSValid; + int64_t mPTS; + uint32_t mEpoch; + uint16_t mProgramID; + uint16_t mSubstreamID; + LinearTransform mClockTranform; + bool mClockTranformValid; + uint8_t mTRTPVersion; + uint32_t mTRTPLength; + TRTPHeaderType mTRTPHeaderType; + + uint8_t* mPacket; + int mPacketLen; + + nsecs_t mExpireTime; + + DISALLOW_EVIL_CONSTRUCTORS(TRTPPacket); +}; + +class TRTPAudioPacket : public TRTPPacket { + public: + enum AudioPayloadFlags { + kFlag_AuxLengthPresent = 0x10, + kFlag_RandomAccessPoint = 0x08, + kFlag_Dropable = 0x04, + kFlag_Discontinuity = 0x02, + kFlag_EndOfStream = 0x01, + }; + + TRTPAudioPacket() + : TRTPPacket(kHeaderTypeAudio) + , mCodecType(kCodecInvalid) + , mRandomAccessPoint(false) + , mDropable(false) + , mDiscontinuity(false) + , mEndOfStream(false) + , mVolume(0) + , mAccessUnitData(NULL) + , mAccessUnitLen(0) + , mAuxData(NULL) + , mAuxDataLen(0) { } + + enum TRTPAudioCodecType { + kCodecInvalid = 0, + kCodecPCMBigEndian = 1, + kCodecPCMLittleEndian = 2, + kCodecMPEG1Audio = 3, + kCodecAACAudio = 4, + }; + + void setCodecType(TRTPAudioCodecType val); + void setRandomAccessPoint(bool val); + void setDropable(bool val); + void setDiscontinuity(bool val); + void setEndOfStream(bool val); + void setVolume(uint8_t val); + void setAccessUnitData(const void* data, size_t len); + void setAuxData(const void* data, size_t len); + + virtual bool pack(); + + protected: + virtual int TRTPHeaderLen() const; + + private: + TRTPAudioCodecType mCodecType; + bool mRandomAccessPoint; + bool mDropable; + bool mDiscontinuity; + bool mEndOfStream; + uint8_t mVolume; + + const void* mAccessUnitData; + size_t mAccessUnitLen; + const void* mAuxData; + size_t mAuxDataLen; + + DISALLOW_EVIL_CONSTRUCTORS(TRTPAudioPacket); +}; + +class TRTPControlPacket : public TRTPPacket { + public: + TRTPControlPacket() + : TRTPPacket(kHeaderTypeControl) + , mCommandID(kCommandNop) {} + + enum TRTPCommandID { + kCommandNop = 1, + kCommandFlush = 2, + kCommandEOS = 3, + }; + + void setCommandID(TRTPCommandID val); + + virtual bool pack(); + + private: + TRTPCommandID mCommandID; + + DISALLOW_EVIL_CONSTRUCTORS(TRTPControlPacket); +}; + +} // namespace android + +#endif // __AAH_TX_PLAYER_H__ |