1 /* ------------------------------------------------------------------ 2 * Copyright (C) 1998-2009 PacketVideo 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 13 * express or implied. 14 * See the License for the specific language governing permissions 15 * and limitations under the License. 16 * ------------------------------------------------------------------- 17 */ 18 #if !defined(LOWER_LAYER_H) 19 #define LOWER_LAYER_H 20 #include "oscl_types.h" 21 #include "oscl_time.h" 22 #ifndef OSCL_TIMER_H_INCLUDED 23 #include "oscl_timer.h" 24 #endif 25 #include "pvt_params.h" 26 #include "pduparcom.h" 27 #include "layer.h" 28 #include "media_packet.h" 29 30 #ifndef OSCL_BASE_H_INCLUDED 31 #include "oscl_base.h" 32 #endif 33 #ifndef OSCLCONFIG_IO_H_INCLUDED 34 #include "osclconfig_io.h" 35 #endif 36 37 #ifndef OSCL_SCHEDULER_AO_H_INCLUDED 38 #include "oscl_scheduler_ao.h" 39 #endif 40 41 #ifndef OSCL_FILE_IO_H_INCLUDED 42 #include "oscl_file_io.h" 43 #endif 44 45 #ifndef OSCL_PRIQUEUE_H_INCLUDED 46 #include "oscl_priqueue.h" 47 #endif 48 49 #ifndef OSCL_MEM_MEMPOOL_H_INCLUDED 50 #include "oscl_mem_mempool.h" 51 #endif 52 53 #ifndef PVMF_MEDIA_DATA_H_INCLUDED 54 #include "pvmf_media_data.h" 55 #endif 56 57 #ifndef PVMF_SIMPLE_MEDIA_BUFFER_H_INCLUDED 58 #include "pvmf_simple_media_buffer.h" 59 #endif 60 61 #ifndef PVMF_NODE_INTERFACE_H_INCLUDED 62 #include "pvmf_node_interface.h" 63 #endif 64 65 #ifndef PVMF_PORT_BASE_IMPL_H_INCLUDED 66 #include "pvmf_port_base_impl.h" 67 #endif 68 69 #ifndef PVMF_POOL_BUFFER_ALLOCATOR_H_INCLUDED 70 #include "pvmf_pool_buffer_allocator.h" 71 #endif 72 73 #ifndef PVLOGGER_H_INCLUDED 74 #include "pvlogger.h" 75 #endif 76 77 #include "h223types.h" 78 #define H223_MAX_SEND_SIZE 1024 79 #define DEFAULT_BITRATE 64000 80 #define H223_DEMUX_BUFFER_INTERVAL_MS 0 81 82 class LowerLayerObserver 83 { 84 public: 85 virtual ~LowerLayerObserver() {} 86 virtual PVMFStatus GetOutgoingMuxPdus(MuxPduPacketList& packets) = 0; 87 virtual void LevelSetupComplete(PVMFStatus status, TPVH223Level level) = 0; 88 virtual void DataReceptionStart() = 0; 89 virtual H223PduParcomObserver* GetParcomObserver() = 0; 90 virtual void LowerLayerError(TPVDirection direction, PVMFStatus error) = 0; 91 }; 92 93 94 /* Lower layer which binds to Network IO */ 95 class H223LowerLayer : public PvmfPortBaseImpl, 96 public PVMFPortActivityHandler, 97 public OsclTimerObject, 98 public OsclTimerObserver, 99 public H223PduParcomObserver 100 { 101 public: 102 H223LowerLayer(int32 aPortTag, TPVLoopbackMode aLoopbackMode); 103 ~H223LowerLayer(); 104 105 void SetObserver(LowerLayerObserver* observer) 106 { 107 iObserver = observer; 108 if (iParcom.GetRep()) 109 iParcom->SetObserver(iObserver->GetParcomObserver()); 110 } 111 112 LowerLayerObserver* GetObserver() 113 { 114 return iObserver; 115 } 116 117 TPVStatusCode SetTimerRes(uint32 timer_res) 118 { 119 iMinTimerResolution = timer_res; 120 UpdatePduSize(); 121 return EPVT_Success; 122 } 123 124 TPVStatusCode Open(); 125 TPVStatusCode Close(); 126 TPVStatusCode Start(H223PduParcomSharedPtr parcom); 127 TPVStatusCode Stop(); 128 129 PVMFStatus Connect(PVMFPortInterface* aPort); 130 void HandlePortActivity(const PVMFPortActivity &); 131 //Force lower layer to stop. 132 int Abort(); 133 134 TPVStatusCode SetLevel(TPVH223Level muxLevel); 135 136 TPVH223Level GetLevel() 137 { 138 return iParcom->GetLevel(); 139 } 140 141 TPVStatusCode SetBitrate(uint32 bitRate); 142 143 TPVStatusCode SetTransmitProfile(bool iAnxA, bool iAnxADf, bool iAnxB, bool iAnxBOh) 144 { 145 iUseAnnexA = iAnxA; 146 iUseAnnexADoubleFlag = iAnxADf; 147 iUseAnnexB = iAnxB; 148 iUseAnnexBwithHeader = iAnxBOh; 149 return EPVT_Success; 150 } 151 152 TPVStatusCode SetMaxOutgoingPduSize(uint16 Size); 153 154 int GetMinTimerRes() 155 { 156 return iMinTimerResolution; 157 } 158 /* Implement PAcketInput: process incoming packet */ 159 void PacketIn(PVMFSharedMediaDataPtr aMediaData); 160 161 /* Dispatch outgoing packet */ 162 void DispatchPacket(OsclSharedPtr<PVMFMediaDataImpl>& pack); 163 164 void SetLoopbackMode(TPVLoopbackMode aLoopbackMode); 165 166 int iTimerIntervalNum; 167 unsigned int iMinTimerResolution; 168 169 void TimeoutOccurred(int32 timerID, int32 timeoutInfo); 170 171 /* H223PduParcomObserver virtuals */ 172 uint32 MuxPduIndicate(uint8* pPdu, uint32 pduSz, int32 fClosing, int32 muxCode); 173 void MuxPduErrIndicate(EMuxPduError err); 174 void MuxSetupComplete(PVMFStatus status, TPVH223Level level); 175 unsigned SetStuffingSize(TPVH223Level level); 176 177 unsigned GetStuffingSize() 178 { 179 return iParcom->GetStuffingSz(); 180 } 181 unsigned GetHeaderSize() 182 { 183 return iParcom->GetHeaderSz(); 184 } 185 186 unsigned SetPduSize(unsigned pdu_size); 187 unsigned GetPduSize() 188 { 189 return iPduSize; 190 } 191 unsigned GetSendSize(); 192 193 void ResetStats(); 194 void LogStats(TPVDirection dir); 195 int32 GetTimestamp(); 196 void GetHdrFragment(OsclRefCounterMemFrag& hdr_frag); 197 PVMFStatus CompletePacket(OsclSharedPtr<PVMFMediaDataImpl>& packet, int mt_entry, int pm); 198 void DoStuffing(TPVH223Level level, 199 OsclSharedPtr<PVMFMediaDataImpl>& pkt, 200 uint32 stuffing_sz, 201 uint8 mux_code = 0); 202 void SendStuffingMsgHeader(uint8* stuffing, uint16 num_bytes); 203 protected: 204 PVMFStatus PutData(PVMFSharedMediaMsgPtr aMsg); 205 void Parse(uint8* buf, uint16 size); 206 bool CheckLevel(uint8* pData, uint16 size , uint16* used_bytes, int* sync_detected); 207 bool CheckLevelWithSync(uint8* pData, uint16 size, uint16* used_bytes) ; 208 void SignalLevelSetupComplete(PVMFStatus status); 209 210 void Run(); 211 void DoCancel(); 212 private: 213 void InitParams(); 214 void InitRuntimeParams(); 215 PVMFStatus Mux(); 216 void UpdatePduSize(); 217 void CreateParcom(TPVH223Level level); 218 void MuxException(); 219 220 LowerLayerObserver* iObserver; 221 222 /* Transmit profile */ 223 bool iUseAnnexA; 224 bool iUseAnnexADoubleFlag; 225 bool iUseAnnexB; 226 bool iUseAnnexBwithHeader; 227 228 /* multiplex level */ 229 bool iLevelSetupComplete; 230 231 /* Stuffing buffers for each level. Pre-allocated and initialized with stuffing for that level */ 232 PVMFBufferPoolAllocator* iMemFragmentAlloc; 233 OsclRefCounterMemFrag iStuffingFrag[MAX_H223_LEVELS+1]; 234 235 uint16 iStuffingSz[8]; 236 237 /* bitrate, bps */ 238 uint32 iBitrate; 239 240 FragmentAllocator* iHdrFragmentAlloc; 241 242 PVMFMediaFragGroupCombinedAlloc<OsclMemAllocator>* iDispatchPacketAlloc; 243 OsclMemPoolFixedChunkAllocator* iMediaDataImplMemAlloc; 244 245 OsclMemPoolFixedChunkAllocator* iMediaMsgPoolAlloc; 246 247 OsclSharedPtr<PVMFMediaDataImpl> iDispatchPacket; 248 MuxPduPacketList iSendPacketList; 249 250 /* Send MUX-PDU size */ 251 unsigned iSendPduSz; 252 unsigned iPduSize; 253 unsigned iStuffingSize; 254 255 /* Timer stuff */ 256 OsclTimer<OsclMemAllocator> iTimer; 257 258 /* operational state */ 259 int iState; 260 int iStateVal; 261 262 /* PDU parcoms */ 263 H223PduParcomSharedPtr iParcom; 264 TPVLoopbackMode iLoopbackMode; 265 266 int iTimerCnt; 267 int iBytesSent; 268 uint32 iSendTimes; 269 270 TimeValue iStartTimeTx; 271 uint32 iNumBytesTx; 272 uint32 iNumMuxSduBytesTx; 273 uint32 iNumStuffingBytesTx; 274 uint32 iNumPdusTx; 275 uint32 iNumPmTx; 276 277 TimeValue iStartTimeRx; 278 uint32 iNumBytesRx; 279 280 TimeValue iLevelSetupTime; 281 282 // Allocator for simple media data buffer 283 OsclMemAllocator iMemAlloc; 284 PVMFSimpleMediaBufferCombinedAlloc iMediaDataAlloc; 285 TimeValue iStartMuxTime; 286 TimeValue iLastMuxTime; 287 288 PVLogger* iLogger; 289 uint8* iDemuxBuffer; 290 uint8* iDemuxBufferPos; 291 uint32 iDemuxBufferSize; 292 uint32 iSyncCheckCount; 293 bool iSkipLevelCheck; 294 uint8* iIdleSyncCheckBuffer; 295 bool iSyncDetected; 296 bool iDataReceptionStart; 297 }; 298 299 300 #endif 301
