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implements the pat/pmt write ts header.
This commit is contained in:
winlin
parent
e88c1e32ee
commit
1ed3e283ab
2 changed files with 802 additions and 114 deletions
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@ -59,7 +59,7 @@ public:
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int64_t dts;
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int pid;
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int sid;
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int cc;
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int cc; // continuity_counter
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bool write_pcr;
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SrsMpegtsFrame();
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@ -327,18 +327,18 @@ public:
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*/
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class SrsTsContext
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{
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// codec
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private:
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std::map<int, SrsTsChannel*> pids;
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// encoder
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private:
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// when any codec changed, write the PAT/PMT.
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SrsCodecVideo vcodec;
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SrsCodecAudio acodec;
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public:
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SrsTsContext();
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virtual ~SrsTsContext();
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public:
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/**
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* the stream contains only one ts packet.
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* @param handler the ts message handler to process the msg.
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* @remark we will consume all bytes in stream.
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*/
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virtual int decode(SrsStream* stream, ISrsTsHandler* handler);
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// codec
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public:
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/**
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* get the pid apply, the parsed pid.
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@ -349,6 +349,27 @@ public:
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* set the pid apply, the parsed pid.
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*/
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virtual void set(int pid, SrsTsPidApply apply_pid, SrsTsStream stream = SrsTsStreamReserved);
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// decode methods
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public:
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/**
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* the stream contains only one ts packet.
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* @param handler the ts message handler to process the msg.
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* @remark we will consume all bytes in stream.
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*/
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virtual int decode(SrsStream* stream, ISrsTsHandler* handler);
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// encode methods
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public:
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/**
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* write the PES packet, the video/audio stream.
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* @param frame the video/audio frame info.
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* @param payload the video/audio payload bytes.
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* @param vc the video codec, write the PAT/PMT table when changed.
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* @param ac the audio codec, write the PAT/PMT table when changed.
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*/
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virtual int encode(SrsFileWriter* writer, SrsMpegtsFrame* frame, SrsSimpleBuffer* payload, SrsCodecVideo vc, SrsCodecAudio ac);
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private:
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virtual int encode_pat_pmt(SrsFileWriter* writer, SrsCodecVideo vcodec, SrsCodecAudio acodec);
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virtual int encode_pes(SrsFileWriter* writer, SrsMpegtsFrame* frame, SrsSimpleBuffer* payload);
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};
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/**
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@ -454,6 +475,12 @@ public:
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virtual ~SrsTsPacket();
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public:
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virtual int decode(SrsStream* stream, SrsTsMessage** ppmsg);
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public:
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virtual int size();
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virtual int encode(SrsStream* stream);
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public:
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static SrsTsPacket* create_pat(SrsTsContext* context, int16_t pmt_number, int16_t pmt_pid);
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static SrsTsPacket* create_pmt(SrsTsContext* context, int16_t pmt_number, int16_t pmt_pid, int16_t vpid, SrsTsStream vs, int16_t apid, SrsTsStream as);
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};
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/**
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@ -755,6 +782,9 @@ public:
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virtual ~SrsTsAdaptationField();
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public:
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virtual int decode(SrsStream* stream);
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public:
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virtual int size();
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virtual int encode(SrsStream* stream);
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};
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/**
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@ -800,6 +830,9 @@ public:
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virtual ~SrsTsPayload();
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public:
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virtual int decode(SrsStream* stream, SrsTsMessage** ppmsg) = 0;
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public:
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virtual int size() = 0;
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virtual int encode(SrsStream* stream) = 0;
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};
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/**
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@ -1141,6 +1174,9 @@ public:
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virtual ~SrsTsPayloadPES();
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public:
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virtual int decode(SrsStream* stream, SrsTsMessage** ppmsg);
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public:
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virtual int size();
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virtual int encode(SrsStream* stream);
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private:
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virtual int decode_33bits_dts_pts(SrsStream* stream, int64_t* pv);
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};
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@ -1179,13 +1215,18 @@ public:
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* const value, must be '0'
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*/
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int8_t const0_value; //1bit
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// 2bits reserved.
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/**
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* reverved value, must be '1'
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*/
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int8_t const1_value; //2bits
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/**
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* This is a 12-bit field, the first two bits of which shall be '00'. The remaining 10 bits specify the number
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* of bytes of the section, starting immediately following the section_length field, and including the CRC. The value in this
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* field shall not exceed 1021 (0x3FD).
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*/
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u_int16_t section_length; //12bits
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public:
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// the specified psi info, for example, PAT fields.
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public:
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// 4B
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/**
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@ -1199,7 +1240,12 @@ public:
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virtual ~SrsTsPayloadPSI();
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public:
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virtual int decode(SrsStream* stream, SrsTsMessage** ppmsg);
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public:
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virtual int size();
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virtual int encode(SrsStream* stream);
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protected:
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virtual int psi_size() = 0;
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virtual int psi_encode(SrsStream* stream) = 0;
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virtual int psi_decode(SrsStream* stream) = 0;
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};
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@ -1217,7 +1263,10 @@ public:
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* Association Table.
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*/
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int16_t number; // 16bits
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// reserved 3bits
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/**
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* reverved value, must be '1'
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*/
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int8_t const1_value; //3bits
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/**
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* program_map_PID/network_PID 13bits
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* network_PID - The network_PID is a 13-bit field, which is used only in conjunction with the value of the
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@ -1225,10 +1274,15 @@ public:
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* Information Table. The value of the network_PID field is defined by the user, but shall only take values as specified in
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* Table 2-3. The presence of the network_PID is optional.
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*/
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int16_t pid;
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int16_t pid; //13bits
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public:
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SrsTsPayloadPATProgram();
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SrsTsPayloadPATProgram(int16_t n = 0, int16_t p = 0);
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virtual ~SrsTsPayloadPATProgram();
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public:
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virtual int decode(SrsStream* stream);
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public:
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virtual int size();
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virtual int encode(SrsStream* stream);
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};
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/**
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@ -1249,7 +1303,10 @@ public:
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u_int16_t transport_stream_id; //16bits
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// 1B
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// 2bits reerverd.
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/**
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* reverved value, must be '1'
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*/
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int8_t const1_value; //2bits
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/**
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* This 5-bit field is the version number of the whole Program Association Table. The version number
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* shall be incremented by 1 modulo 32 whenever the definition of the Program Association Table changes. When the
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@ -1285,8 +1342,11 @@ public:
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public:
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SrsTsPayloadPAT(SrsTsPacket* p);
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virtual ~SrsTsPayloadPAT();
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public:
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protected:
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virtual int psi_decode(SrsStream* stream);
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protected:
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virtual int psi_size();
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virtual int psi_encode(SrsStream* stream);
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};
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/**
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@ -1303,15 +1363,21 @@ public:
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SrsTsStream stream_type; //8bits
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// 2B
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// 3bits reserved
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/**
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* reverved value, must be '1'
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*/
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int8_t const1_value0; //3bits
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/**
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* This is a 13-bit field specifying the PID of the Transport Stream packets which carry the associated
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* program element.
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*/
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int16_t elementary_PID; //13bits
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// 2B
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// 4bits reserved
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// (2+x)B
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/**
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* reverved value, must be '1'
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*/
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int8_t const1_value1; //4bits
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/**
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* This is a 12-bit field, the first two bits of which shall be '00'. The remaining 10 bits specify the number
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* of bytes of the descriptors of the associated program element immediately following the ES_info_length field.
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@ -1319,8 +1385,13 @@ public:
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int16_t ES_info_length; //12bits
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char* ES_info; //[ES_info_length] bytes.
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public:
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SrsTsPayloadPMTESInfo();
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SrsTsPayloadPMTESInfo(SrsTsStream st = SrsTsStreamReserved, int16_t epid = 0);
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virtual ~SrsTsPayloadPMTESInfo();
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public:
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virtual int decode(SrsStream* stream);
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public:
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virtual int size();
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virtual int encode(SrsStream* stream);
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};
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/**
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@ -1349,7 +1420,10 @@ public:
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u_int16_t program_number; //16bits
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// 1B
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// 2bits reerverd.
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/**
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* reverved value, must be '1'
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*/
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int8_t const1_value0; //2bits
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/**
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* This 5-bit field is the version number of the TS_program_map_section. The version number shall be
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* incremented by 1 modulo 32 when a change in the information carried within the section occurs. Version number refers
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@ -1378,17 +1452,20 @@ public:
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u_int8_t last_section_number; //8bits
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// 2B
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// 2bits reserved.
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/**
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* reverved value, must be '1'
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*/
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int8_t const1_value1; //3bits
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/**
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* This is a 13-bit field indicating the PID of the Transport Stream packets which shall contain the PCR fields
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* valid for the program specified by program_number. If no PCR is associated with a program definition for private
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* streams, then this field shall take the value of 0x1FFF. Refer to the semantic definition of PCR in 2.4.3.5 and Table 2-3
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* for restrictions on the choice of PCR_PID value.
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*/
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int16_t PCR_PID; //16bits
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int16_t PCR_PID; //13bits
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// 2B
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// 4bits reserved.
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int8_t const1_value2; //4bits
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/**
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* This is a 12-bit field, the first two bits of which shall be '00'. The remaining 10 bits specify the
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* number of bytes of the descriptors immediately following the program_info_length field.
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@ -1401,8 +1478,11 @@ public:
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public:
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SrsTsPayloadPMT(SrsTsPacket* p);
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virtual ~SrsTsPayloadPMT();
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public:
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protected:
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virtual int psi_decode(SrsStream* stream);
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protected:
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virtual int psi_size();
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virtual int psi_encode(SrsStream* stream);
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};
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/**
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@ -1412,9 +1492,10 @@ public:
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class SrsTSMuxer
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{
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private:
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SrsCodecAudio previous;
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SrsCodecAudio current;
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SrsCodecVideo vcodec;
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SrsCodecAudio acodec;
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private:
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SrsTsContext* context;
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SrsFileWriter* writer;
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std::string path;
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public:
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