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 /* ===================================================================== */ 19 /* File: LATMPayloadParser.h */ 20 /* Description: */ 21 /* */ 22 /* RTP packet payload parser. */ 23 /* */ 24 /* Rev: 0.2 */ 25 /* ===================================================================== */ 26 /* */ 27 /* Revision History: */ 28 /* */ 29 /* Rev: */ 30 /* Date: */ 31 /* Description: */ 32 /* */ 33 /* //////////////////////////////////////////////////////////////////////// */ 34 35 #ifndef _LATMPAYLOADPARSER_H_ 36 #define _LATMPAYLOADPARSER_H_ 37 38 #ifndef OSCL_BASE_H_INCLUDED 39 #include "oscl_base.h" 40 #endif 41 #ifndef PVMF_MEDIA_DATA_H_INCLUDED 42 #include "pvmf_media_data.h" 43 #endif 44 #ifndef OSCL_MEM_MEMPOOL_H_INCLUDED 45 #include "oscl_mem_mempool.h" 46 #endif 47 #ifndef PVMF_MEDIA_FRAG_GROUP_H_INCLUDED 48 #include "pvmf_media_frag_group.h" 49 #endif 50 #ifndef PVMF_SIMPLE_MEDIA_BUFFER_H_INCLUDED 51 #include "pvmf_simple_media_buffer.h" 52 #endif 53 54 55 //status return type used by PayloadParser class API, up to 16-bit map 56 #define FRAME_ERROR 0x10 //error during composing 57 #define FRAME_INCOMPLETE 0x01 //frame incomplete 58 #define FRAME_COMPLETE 0x80 //frame complete 59 60 // Don't understand the organization of the status codes so using available bit 61 #define FRAME_OUTPUTNOTAVAILABLE 0x20 //memory for parser output data not available 62 63 64 65 // this is a structure i need to hold information used in demultiplexing 66 typedef struct _streamMuxConfig 67 { 68 bool cpresent; 69 uint32 audioMuxVersion; 70 uint32 allStreamsSameTimeFraming; 71 uint32 numSubFrames; 72 uint32 frameLengthType; // 0 == 1024 samples, 1 == 960 (not supported) 73 uint32 bufferFullness; 74 bool otherDataPresent; 75 uint32 otherDataLenBits; 76 bool crcCheckPresent; 77 uint8 crcCheckSum; 78 79 uint32 audioObjectType; 80 uint32 samplingFrequency; 81 uint32 channelConfiguration; 82 /* AAC+ data */ 83 84 int32 sbrPresentFlag; 85 uint32 extensionAudioObjectType; 86 uint32 extensionSamplingFrequencyIndex; 87 uint32 extensionSamplingFrequency; 88 89 // include this because the payload parser may need to deal with inline 90 // audioSpecificConfigs and if it is the same as the current one, we dont 91 // want to reset the decoder to the same settings.. 92 uint8 * audioSpecificConfigPtr; 93 uint32 audioSpecificConfigSize; 94 95 uint8 ** audioSpecificConfigPtrPtr; 96 uint32 * audioSpecificConfigSizePtr; 97 98 uint32 parseResult; 99 } streamMuxConfig; 100 101 102 //////////////////////////////////AAC LATM parser 103 class PV_LATM_Parser 104 { 105 public: 106 107 OSCL_IMPORT_REF PV_LATM_Parser(); 108 OSCL_IMPORT_REF ~PV_LATM_Parser(); 109 110 OSCL_IMPORT_REF uint8 compose(PVMFSharedMediaDataPtr&); 111 OSCL_IMPORT_REF uint8* ParseStreamMuxConfig(uint8* decoderSpecificConfig, int32 * size); 112 113 //added to return streammuxconfig 114 streamMuxConfig *GetStreamMuxConfig() 115 { 116 return sMC; 117 } 118 PVMFSharedMediaDataPtr GetOutputBuffer() 119 { 120 return mediaDataOut; 121 } 122 OSCL_IMPORT_REF uint8 compose(uint8* aData, uint32 aDataLen, uint32 aTimestamp, uint32 aSeqNum, uint32 aMbit); 123 124 125 private: 126 uint8 composeSingleFrame(PVMFSharedMediaDataPtr&); 127 uint8 composeMultipleFrame(PVMFSharedMediaDataPtr&); 128 uint8 composeSingleFrame(uint8* aData, uint32 aDataLen, uint32 aTimestamp, uint32 aSeqNum, uint32 aMbit); 129 uint8 composeMultipleFrame(uint8* aData, uint32 aDataLen, uint32 aTimestamp, uint32 aSeqNum, uint32 aMbit); 130 131 132 private: 133 uint32 last_timestamp; 134 uint32 last_sequence_num; 135 uint32 last_mbit; 136 uint8* next_frame; //next audio data 137 int8 frame; // number of frames in this packet 138 int16 offset; //for multiple frame in a packet 139 bool framestart; //start a frame yet 140 int32 bufsize; //original buffer size 141 int32 framesize; // current composing frame size 142 143 int32 currLen; 144 bool firstBlock; 145 int32 bytesRead; 146 bool myBool; 147 int32 frameNum; 148 int32 compositenumframes; 149 150 //memory pool for output data 151 //OsclRefCounterMemFrag memFragOut; 152 PVMFSharedMediaDataPtr mediaDataOut; 153 154 PVMFSimpleMediaBufferCombinedAlloc iMediaDataSimpleAlloc; 155 156 // Memory pool for latm data 157 OsclMemPoolFixedChunkAllocator iLATMDataMemPool; 158 159 // Memory pool for simple media data 160 OsclMemPoolFixedChunkAllocator iMediaDataMemPool; 161 162 163 streamMuxConfig * sMC; 164 uint8* multiFrameBuf; 165 int32 currSize; 166 bool firstPacket; 167 bool dropFrames; 168 uint32 maxFrameSize; 169 bool firstSMC; 170 bool startedParsing; 171 uint8* framePos; 172 int32 frameCount; 173 174 OsclErrorTrapImp* iOsclErrorTrapImp; 175 176 }; 177 178 #endif // _LATMPAYLOADPARSER_H_ 179 180
