diff --git a/trunk/research/ts_info.cc b/trunk/research/ts_info.cc
index dc2411f60..e9529bc0c 100755
--- a/trunk/research/ts_info.cc
+++ b/trunk/research/ts_info.cc
@@ -1,2185 +1,2191 @@
-/*
-The MIT License (MIT)
-
-Copyright (c) 2013 winlin
-
-Permission is hereby granted, free of charge, to any person obtaining a copy of
-this software and associated documentation files (the "Software"), to deal in
-the Software without restriction, including without limitation the rights to
-use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of
-the Software, and to permit persons to whom the Software is furnished to do so,
-subject to the following conditions:
-
-The above copyright notice and this permission notice shall be included in all
-copies or substantial portions of the Software.
-
-THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
-IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS
-FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR
-COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
-IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
-CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
-*/
-/**
-g++ -o ts_info ts_info.cc -g -O0 -ansi
-*/
-#if 1
-// for int64_t print using PRId64 format.
-#ifndef __STDC_FORMAT_MACROS
-    #define __STDC_FORMAT_MACROS
-#endif
-#include <inttypes.h>
-
-#include <sys/types.h>
-#include <sys/stat.h>
-#include <fcntl.h>
-#include <unistd.h>
-#include <stdio.h>
-#include <stdlib.h>
-#include <string.h>
-#include <assert.h>
-
-#include <vector>
-#include <map>
-
-#define trace(msg, ...) printf(msg"\n", ##__VA_ARGS__);
-#define srs_freep(p) delete p; p = NULL
-#define srs_freepa(p) delete[] p; p = NULL
-#define srs_assert(p) assert(p)
-#define srs_min(a, b) ((a)<(b)? (a):(b))
-
-#endif
-/**
-ISO/IEC 13818-1:2000(E)
-Introduction
-    Intro. 1 Transport Stream
-    Intro. 2 Program Stream
-    Intro. 4 Packetized Elementary Stream
-SECTION 2 – TECHNICAL ELEMENTS
-    2.4 Transport Stream bitstream requirements
-        2.4.1 Transport Stream coding structure and parameters
-        2.4.2 Transport Stream system target decoder
-        2.4.3 Specification of the Transport Stream syntax and semantics
-            2.4.3.1 Transport Stream
-            2.4.3.2 Transport Stream packet layer
-            2.4.3.3 Semantic definition of fields in Transport Stream packet layer
-            2.4.3.5 Semantic definition of fields in adaptation field
-            2.4.3.6 PES packet
-            2.4.3.7 Semantic definition of fields in PES packet
-        2.4.4 Program specific information
-            2.4.4.5 Semantic definition of fields in program association section
-            2.4.4.6 Conditional access Table
-    2.5 Program Stream bitstream requirements
-    2.6 Program and program element descriptors
-    2.7 Restrictions on the multiplexed stream semantics
-Annex A CRC Decoder Model
-*/
-#if 1
-// Transport Stream packets are 188 bytes in length.
-#define TS_PACKET_SIZE          188
-
-enum TSPidTable
-{
-	// Program Association Table(see Table 2-25).
-	TSPidTablePAT	= 0x00,
-	// Conditional Access Table (see Table 2-27).
-	TSPidTableCAT	= 0x01,
-	// Transport Stream Description Table
-	TSPidTableTSDT	= 0x02,
-	// null packets (see Table 2-3)
-	TSPidTableNULL	= 0x01FFF,
-};
-
-/*adaptation_field_control*/
-/**
-* Table 2-5 – Adaptation field control values, page 38.
-*/
-enum TSAdaptionType
-{
-	// Reserved for future use by ISO/IEC
-	TSAdaptionTypeReserved		= 0x00,
-	// No adaptation_field, payload only
-	TSAdaptionTypePayloadOnly 	= 0x01,
-	// Adaptation_field only, no payload
-	TSAdaptionTypeAdaptionOnly 	= 0x02,
-	// Adaptation_field followed by payload
-	TSAdaptionTypeBoth			= 0x03,
-};
-#endif
-
-// Table 2-29 – Stream type assignments. page 66.
-enum TSStreamType
-{
-	// ITU-T | ISO/IEC Reserved
-	TSStreamTypeReserved			= 0x00,
-	/*defined by ffmpeg*/
-	TSStreamTypeVideoMpeg1 			= 0x01,
-	TSStreamTypeVideoMpeg2 			= 0x02,
-	TSStreamTypeAudioMpeg1 			= 0x03,
-	TSStreamTypeAudioMpeg2 			= 0x04,
-	TSStreamTypePrivateSection 		= 0x05,
-	TSStreamTypePrivateData 		= 0x06,
-	TSStreamTypeAudioAAC	 		= 0x0f,
-	TSStreamTypeVideoMpeg4	 		= 0x10,
-	TSStreamTypeVideoH264	 		= 0x1b,
-	TSStreamTypeAudioAC3	 		= 0x81,
-	TSStreamTypeAudioDTS	 		= 0x8a,
-};
-
-/**
-* the actually parsed type.
-*/
-enum TSPidType 
-{
-    TSPidTypeReserved = 0, // TSPidTypeReserved, nothing parsed, used reserved.
-    
-    TSPidTypePAT, // Program associtate table
-    TSPidTypePMT, // Program map table.
-    
-    TSPidTypeVideo, // only for H264 video
-    TSPidTypeAudio, // only for AAC audio
-};
-
-// forward declares.
-class TSHeader;
-class TSAdaptionField;
-class TSPayload;
-class TSPayloadReserved;
-class TSPayloadPAT;
-class TSPayloadPMT;
-class TSPayloadPES;
-class TSContext;
-class TSMessage;
-
-// TSPacket declares.
-class TSPacket
-{
-public:
-	TSHeader* header;
-    TSAdaptionField* adaption_field;
-    TSPayload* payload;
-    
-    TSPacket();
-    virtual ~TSPacket();
-    int demux(TSContext* ctx, u_int8_t* start, u_int8_t* last, u_int8_t*& p, TSMessage*& pmsg);
-    int finish();
-};
-
-/**
-* 2.4.3.2 Transport Stream packet layer. page 36.
-*/
-class TSHeader 
-{
-public:
-    // 1B
-    int8_t sync_byte; //8bits
-    // 2B
-    int8_t transport_error_indicator; //1bit
-    int8_t payload_unit_start_indicator; //1bit
-    int8_t transport_priority; //1bit
-    TSPidTable pid; //13bits
-    // 1B
-    int8_t transport_scrambling_control; //2bits
-    TSAdaptionType adaption_field_control; //2bits
-    u_int8_t continuity_counter; //4bits
-    
-    TSHeader();
-    virtual ~TSHeader();
-    int get_size();
-    int demux(TSContext* ctx, TSPacket* pkt, u_int8_t* start, u_int8_t* last, u_int8_t*& p, TSMessage*& pmsg);
-};
-
-// variant ts packet adation field. page 40.
-class TSAdaptionField 
-{
-public:
-    // 1B
-    u_int8_t adaption_field_length; //8bits
-    // 1B
-    int8_t discontinuity_indicator; //1bit
-    int8_t random_access_indicator; //1bit
-    int8_t elementary_stream_priority_indicator; //1bit
-    int8_t PCR_flag; //1bit
-    int8_t OPCR_flag; //1bit
-    int8_t splicing_point_flag; //1bit
-    int8_t transport_private_data_flag; //1bit
-    int8_t adaptation_field_extension_flag; //1bit
-    
-    // if PCR_flag, 6B
-    int64_t program_clock_reference_base; //33bits
-    //6bits reserved.
-    int16_t program_clock_reference_extension; //9bits
-    
-    // if OPCR_flag, 6B
-    int64_t original_program_clock_reference_base; //33bits
-    //6bits reserved.
-    int16_t original_program_clock_reference_extension; //9bits
-    
-    // if splicing_point_flag, 1B
-    int8_t splice_countdown; //8bits
-    
-    // if transport_private_data_flag, 1+p[0] B
-    u_int8_t transport_private_data_length; //8bits
-    char* transport_private_data; //[transport_private_data_length]bytes
-    
-    // if adaptation_field_extension_flag, 2+x bytes
-    u_int8_t adaptation_field_extension_length; //8bits
-    int8_t ltw_flag; //1bit
-    int8_t piecewise_rate_flag; //1bit
-    int8_t seamless_splice_flag; //1bit
-    //5bits reserved
-    // if ltw_flag, 2B
-    int8_t ltw_valid_flag; //1bit
-    int16_t ltw_offset; //15bits
-    // if piecewise_rate_flag, 3B
-    //2bits reserved
-    int32_t piecewise_rate; //22bits
-    // if seamless_splice_flag, 5B
-    int8_t splice_type; //4bits
-    int8_t DTS_next_AU0; //3bits
-    int8_t marker_bit0; //1bit
-    int16_t DTS_next_AU1; //15bits
-    int8_t marker_bit1; //1bit
-    int16_t DTS_next_AU2; //15bits
-    int8_t marker_bit2; //1bit
-    // left bytes.
-    char* af_ext_reserved;
-    
-    // left bytes.
-    char* af_reserved;
-    
-    // user defined total adaption field size.
-    int __field_size;
-    // logic pcr/original_pcr
-    int64_t pcr;
-    int64_t original_pcr;
-    
-    TSAdaptionField();
-    virtual ~TSAdaptionField();
-    int get_size();
-    int demux(TSContext* ctx, TSPacket* pkt, u_int8_t* start, u_int8_t* last, u_int8_t*& p, TSMessage*& pmsg);
-};
-
-// variant ts packet payload. 
-// PES packet or PSI table.
-// TSPayloadPAT: page 61.
-class TSPayload 
-{
-public:
-    /**
-    * the size of payload(payload plush the 1byte pointer_field).
-    */
-    int size;
-    int pointer_field_size;
-    
-	TSPidType type;
-    
-    /**
-    * 2.4.4.2 Semantics definition of fields in pointer syntax
-    */
-    u_int8_t pointer_field;
-    
-    TSPayloadReserved* reserved;
-    TSPayloadPAT* pat;
-    TSPayloadPMT* pmt;
-    TSPayloadPES* pes;
-    
-    /**
-    * 2.4.3.6 PES packet. page 49.
-    */
-    
-    TSPayload();
-    virtual ~TSPayload();;
-    void read_pointer_field(TSPacket* pkt, u_int8_t*& p);
-    int demux(TSContext* ctx, TSPacket* pkt, u_int8_t* start, u_int8_t* last, u_int8_t*& p, TSMessage*& pmsg);
-};
-
-
-/**
-* 2.4.4.3 Program association Table. page 61.
-*/
-class TSPayloadPAT 
-{
-public:
-    // 1B
-    u_int8_t table_id; //8bits
-    
-    // 2B
-    int8_t section_syntax_indicator; //1bit
-    int8_t const0_value; //1bit
-    // 2bits reserved. 
-    u_int16_t section_length; //12bits
-    
-    // 2B
-    u_int16_t transport_stream_id; //16bits
-    
-    // 1B
-    // 2bits reerverd.
-    int8_t version_number; //5bits
-    int8_t current_next_indicator; //1bit
-    
-    // 1B
-    u_int8_t section_number; //8bits
-    
-    // 1B
-    u_int8_t last_section_number; //8bits
-    
-    // multiple 4B program data.
-    // program_number 16bits
-    // reserved 2bits
-    // 13bits data: 0x1FFF
-    // if program_number program_map_PID 13bits
-    // else network_PID 13bytes.
-    int program_size;
-    int32_t* programs; //32bits
-    
-    // 4B
-    int32_t CRC_32; //32bits
-    
-    TSPayloadPAT();
-    virtual ~TSPayloadPAT();
-    int demux(TSContext* ctx, TSPacket* pkt, u_int8_t* start, u_int8_t* last, u_int8_t*& p, TSMessage*& pmsg);
-};
-
-class TSPMTESInfo
-{
-public:
-    // 1B
-    u_int8_t stream_type; //8bits
-    
-    // 2B
-    // 3bits reserved
-    int16_t elementary_PID; //13bits
-    
-    // 2B
-    // 4bits reserved
-    int16_t ES_info_length; //12bits
-    
-    char* ES_info; //[ES_info_length] bytes.
-    
-    TSPMTESInfo();
-    virtual ~TSPMTESInfo();
-};
-
-
-/**
-* 2.4.4.8 Program Map Table. page 64.
-*/
-class TSPayloadPMT
-{
-public:
-    // 1B
-    u_int8_t table_id; //8bits
-    
-    // 2B
-    int8_t section_syntax_indicator; //1bit
-    int8_t const0_value; //1bit
-    // 2bits reserved. 
-    u_int16_t section_length; //12bits
-    
-    // 2B
-    u_int16_t program_number; //16bits
-    
-    // 1B
-    // 2bits reerverd.
-    int8_t version_number; //5bits
-    int8_t current_next_indicator; //1bit
-    
-    // 1B
-    u_int8_t section_number; //8bits
-    
-    // 1B
-    u_int8_t last_section_number; //8bits
-    
-    // 2B
-    // 2bits reserved.
-    int16_t PCR_PID; //16bits
-    
-    // 2B
-    // 4bits reserved.
-    int16_t program_info_length; //12bits
-    char* program_info_desc; //[program_info_length]bytes
-    
-    // array of TSPMTESInfo.
-    std::vector<TSPMTESInfo*> ES_info; 
-    
-    // 4B
-    int32_t CRC_32; //32bits
-    
-    TSPayloadPMT();
-    virtual ~TSPayloadPMT();
-    TSPMTESInfo* at(int index);
-    int demux(TSContext* ctx, TSPacket* pkt, u_int8_t* start, u_int8_t* last, u_int8_t*& p, TSMessage*& pmsg);
-};
-
-/**
-* Table 2-18 – Stream_id assignments. page 52.
-*/
-enum TSPESStreamId
-{
-	PES_program_stream_map 		= 0b10111100, // 0xbc
-	PES_private_stream_1 		= 0b10111101, // 0xbd
-	PES_padding_stream			= 0b10111110, // 0xbe
-	PES_private_stream_2		= 0b10111111, // 0xbf
-	
-	// 110x xxxx
-	// ISO/IEC 13818-3 or ISO/IEC 11172-3 or ISO/IEC 13818-7 or ISO/IEC
-	// 14496-3 audio stream number x xxxx
-	// (stream_id>>5)&0x07 == PES_audio_prefix
-	PES_audio_prefix			= 0b110,
-	
-	// 1110 xxxx
-	// ITU-T Rec. H.262 | ISO/IEC 13818-2 or ISO/IEC 11172-2 or ISO/IEC
-	// 14496-2 video stream number xxxx
-	// (stream_id>>4)&0x0f == PES_audio_prefix
-	PES_video_prefix			= 0b1110,
-	
-	PES_ECM_stream				= 0b11110000, // 0xf0
-	PES_EMM_stream				= 0b11110001, // 0xf1
-	PES_DSMCC_stream			= 0b11110010, // 0xf2
-	PES_13522_stream			= 0b11110011, // 0xf3
-	PES_H_222_1_type_A			= 0b11110100, // 0xf4
-	PES_H_222_1_type_B			= 0b11110101, // 0xf5
-	PES_H_222_1_type_C			= 0b11110110, // 0xf6
-	PES_H_222_1_type_D			= 0b11110111, // 0xf7
-	PES_H_222_1_type_E			= 0b11111000, // 0xf8
-	PES_ancillary_stream		= 0b11111001, // 0xf9
-	PES_SL_packetized_stream	= 0b11111010, // 0xfa
-	PES_FlexMux_stream			= 0b11111011, // 0xfb
-	// reserved data stream
-	// 1111 1100 … 1111 1110
-	PES_program_stream_directory= 0b11111111, // 0xff
-};
-
-
-/**
-* 2.4.3.7 Semantic definition of fields in PES packet. page 49.
-*/
-class TSPayloadPES
-{
-public:
-    // 3B
-    int32_t packet_start_code_prefix; //24bits
-    // 1B
-    u_int8_t stream_id; //8bits
-    // 2B
-    u_int16_t PES_packet_length; //16bits
-
-	// 1B
-	// 2bits const '10'
-	int8_t PES_scrambling_control; //2bits
-	int8_t PES_priority; //1bit
-	int8_t data_alignment_indicator; //1bit
-	int8_t copyright; //1bit
-	int8_t original_or_copy; //1bit
-	
-	// 1B
-	int8_t PTS_DTS_flags; //2bits
-	int8_t ESCR_flag; //1bit
-	int8_t ES_rate_flag; //1bit
-	int8_t DSM_trick_mode_flag; //1bit
-	int8_t additional_copy_info_flag; //1bit
-	int8_t PES_CRC_flag; //1bit
-	int8_t PES_extension_flag; //1bit
-	
-	// 1B
-	u_int8_t PES_header_data_length; //8bits
-	
-	int64_t pts; // 33bits
-	int64_t dts; // 33bits
-	
-	int16_t ESCR_extension; //9bits
-	int64_t ESCR_base; //33bits
-	int32_t ES_rate; //22bits
-	
-	int8_t trick_mode_control; //3bits
-	int8_t trick_mode_value; //5bits
-	
-	int8_t additional_copy_info; //7bits
-	int16_t previous_PES_packet_CRC; //16bits
-	
-	int8_t PES_private_data_flag; //1bit
-	int8_t pack_header_field_flag; //1bit
-	int8_t program_packet_sequence_counter_flag; //1bit
-	int8_t P_STD_buffer_flag; //1bit
-	// reserved 3bits
-	int8_t PES_extension_flag_2; //1bit
-	
-	// 16B
-	char* PES_private_data; //128bits
-	
-	int8_t pack_field_length; //8bits
-	char* pack_field; //[pack_field_length] bytes
-				
-	int8_t program_packet_sequence_counter; //7bits
-	int8_t MPEG1_MPEG2_identifier; //1bit
-	int8_t original_stuff_length; //6bits
-				
-	int8_t P_STD_buffer_scale; //1bit
-	int16_t P_STD_buffer_size; //13bits
-	
-	int8_t PES_extension_field_length; //7bits
-	char* PES_extension_field; //[PES_extension_field_length] bytes
-	
-	int stuffing_size;
-	char* stuffing_byte;
-    
-    TSPayloadPES();
-    virtual ~TSPayloadPES();
-    int64_t decode_33bits_int(u_int8_t*& p, int64_t& temp);
-    int64_t decode_33bits_int(int64_t& temp);
-    int demux(TSContext* ctx, TSPacket* pkt, u_int8_t* start, u_int8_t* last, u_int8_t*& p, TSMessage*& pmsg);
-};
-
-class TSPayloadReserved 
-{
-public:
-    int size;
-    char* bytes;
-    
-    TSPayloadReserved();
-    virtual ~TSPayloadReserved();
-    int demux(TSContext* ctx, TSPacket* pkt, u_int8_t* start, u_int8_t* last, u_int8_t*& p, TSMessage*& pmsg);
-};
-
-/**
-* logic ts pid.
-*/
-struct TSPid
-{
-	TSPidType type;
-	// page 66.
-	TSStreamType stream_type;
-	// page 36
-	TSPidTable pid;
-	// page 36
-	u_int8_t continuity_counter;
-};
-
-/**
-* logic audio/video message
-*/
-class TSMessage
-{
-public:
-	// 2.4.3.2 Transport Stream packet layer. page 36
-	// the pid of PES packet.
-	TSPidTable pid;
-	
-	// the type of pid.
-	TSPidType type;
-	// the type of stream, codec type.
-	TSStreamType stream_type;
-	// page 36
-	u_int8_t continuity_counter;
-	
-	// 2.4.3.7 Semantic definition of fields in PES packet. page 49
-	// PES packet header size plus data size.
-    u_int16_t PES_packet_length; //16bits
-
-	// the stream id.
-	u_int8_t stream_id;
-	
-	// 2.4.3.7 Semantic definition of fields in PES packet. page 49.
-	int32_t packet_start_code_prefix;
-	
-	int64_t pts; // 33bits
-	int64_t dts; // 33bits
-    
-    // header size.
-    int packet_header_size;
-    
-    // the parsed packet size.
-    int parsed_packet_size;
-    
-    // total packet size.
-	int packet_data_size;
-	char* packet_data;
-	
-	TSMessage();
-	virtual ~TSMessage();
-	
-	void append(u_int8_t*& p, int size);
-	void detach(TSContext* ctx, TSMessage*& pmsg);
-	
-	bool is_video();
-};
-
-// ts context
-class TSContext
-{
-public:
-    /**
-    * consumed pids.
-    */
-    int pid_size;
-	TSPid* pids;
-	int64_t ts_packet_count;
-	std::map<TSPidTable, TSMessage*> msgs;
-    
-    TSContext();
-    virtual ~TSContext();
-    bool exists(TSPidTable pid);
-    TSPid* get(TSPidTable pid);
-    void push(TSPidTable pid, TSStreamType stream_type, TSPidType type, u_int8_t continuity_counter);
-    
-    TSMessage* get_msg(TSPidTable pid);
-    void detach(TSMessage* msg);
-};
-
-TSContext::TSContext()
-{
-    pid_size = 0;
-    ts_packet_count = 0;
-    pids = NULL;
-}
-
-TSContext::~TSContext()
-{
-    srs_freepa(pids);
-    
-    std::map<TSPidTable, TSMessage*>::iterator it;
-    for (it = msgs.begin(); it != msgs.end(); ++it) {
-        TSMessage* msg = it->second;
-        srs_freep(msg);
-    }
-    msgs.clear();
-}
-
-bool TSContext::exists(TSPidTable pid)
-{
-    for (int i = 0; i < pid_size; i++) {
-        if (pid == pids[i].pid) {
-            return true;
-        }
-    }
-    
-    return false;
-}
-
-TSPid* TSContext::get(TSPidTable pid)
-{
-    for (int i = 0; i < pid_size; i++) {
-        if (pid == pids[i].pid) {
-            return &pids[i];
-        }
-    }
-    
-    return NULL;
-}
-
-void TSContext::push(TSPidTable pid, TSStreamType stream_type, TSPidType type, u_int8_t continuity_counter)
-{
-	TSPid* p = get(pid);
-	
-    if (!p) {
-        p = new TSPid[pid_size + 1];
-		memcpy(p, pids, sizeof(TSPid) * pid_size);
-		
-		p[pid_size] = (TSPid){type, stream_type, pid, continuity_counter};
-		pid_size++;
-		
-		srs_freepa(pids);
-		pids = p;
-    }
-    
-    p->continuity_counter = continuity_counter;
-}
-
-TSMessage* TSContext::get_msg(TSPidTable pid)
-{
-	if (msgs[pid] == NULL) {
-		TSMessage* msg = new TSMessage();
-		msg->pid = pid;
-		msgs[pid] = msg;
-	}
-	
-	return msgs[pid];
-}
-
-void TSContext::detach(TSMessage* msg)
-{
-	msgs[msg->pid] = NULL;
-}
-
-TSMessage::TSMessage()
-{
-	pid = TSPidTablePAT;
-	type = TSPidTypeReserved;
-	stream_type = TSStreamTypeReserved;
-	stream_id = 0;
-	packet_start_code_prefix = 0;
-	pts = dts = 0;
-	PES_packet_length = 0;
-	packet_header_size = 0;
-	parsed_packet_size = 0;
-	packet_data_size = 0;
-	packet_data = NULL;
-}
-
-TSMessage::~TSMessage()
-{
-	srs_freepa(packet_data);
-}
-
-void TSMessage::append(u_int8_t*& p, int size)
-{
-	if (size <= 0) {
-		return;
-	}
-	
-	// for PES_packet_length is 0, the size is varient.
-	if (packet_data_size - parsed_packet_size < size) {
-		int realloc_size = size - (packet_data_size - parsed_packet_size);
-		packet_data = (char*)realloc(packet_data, packet_data_size + realloc_size);
-		
-		packet_data_size += realloc_size;
-	}
-	
-	memcpy(packet_data + parsed_packet_size, p, size);
-	p += size;
-	parsed_packet_size += size;
-}
-
-void TSMessage::detach(TSContext* ctx, TSMessage*& pmsg)
-{
-	if (parsed_packet_size >= packet_data_size) {
-		ctx->detach(this);
-		pmsg = this;
-	}
-}
-
-bool TSMessage::is_video()
-{
-	return type == TSPidTypeVideo;
-}
-
-TSAdaptionField::TSAdaptionField()
-{
-    adaption_field_length = 0;
-    discontinuity_indicator = 0;
-    random_access_indicator = 0;
-    elementary_stream_priority_indicator = 0;
-    PCR_flag = 0;
-    OPCR_flag = 0;
-    splicing_point_flag = 0;
-    transport_private_data_flag = 0;
-    adaptation_field_extension_flag = 0;
-    program_clock_reference_base = 0;
-    program_clock_reference_extension = 0;
-    original_program_clock_reference_base = 0;
-    original_program_clock_reference_extension = 0;
-    splice_countdown = 0;
-    transport_private_data_length = 0;
-    transport_private_data = NULL;
-    adaptation_field_extension_length = 0;
-    ltw_flag = 0;
-    piecewise_rate_flag = 0;
-    seamless_splice_flag = 0;
-    ltw_valid_flag = 0;
-    ltw_offset = 0;
-    piecewise_rate = 0;
-    splice_type = 0;
-    DTS_next_AU0 = 0;
-    marker_bit0 = 0;
-    DTS_next_AU1 = 0;
-    marker_bit1 = 0;
-    DTS_next_AU2 = 0;
-    marker_bit2 = 0;
-    af_ext_reserved = NULL;
-    af_reserved = NULL;
-    __field_size = 0;
-    pcr = 0;
-    original_pcr = 0;
-}
-
-TSAdaptionField::~TSAdaptionField()
-{
-    srs_freepa(transport_private_data);
-    srs_freepa(af_ext_reserved);
-    srs_freepa(af_reserved);
-}
-
-int TSAdaptionField::get_size()
-{
-    return __field_size;
-}
-
-int TSAdaptionField::demux(TSContext* ctx, TSPacket* pkt, u_int8_t* start, u_int8_t* last, u_int8_t*& p, TSMessage*& pmsg)
-{
-    int ret = 0;
-
-    adaption_field_length = *p++;
-    u_int8_t* pos_af = p;
-    __field_size = 1 + adaption_field_length;
-    
-    if (adaption_field_length <= 0) {
-        trace("ts+af empty af decoded.");
-        return ret;
-    }
-    
-    int8_t value = *p++;
-    
-    discontinuity_indicator              =   (value >> 7) & 0x01;
-    random_access_indicator              =   (value >> 6) & 0x01;
-    elementary_stream_priority_indicator =   (value >> 5) & 0x01;
-    PCR_flag                             =   (value >> 4) & 0x01;
-    OPCR_flag                            =   (value >> 3) & 0x01;
-    splicing_point_flag                  =   (value >> 2) & 0x01;
-    transport_private_data_flag          =   (value >> 1) & 0x01;
-    adaptation_field_extension_flag      =   (value >> 0) & 0x01;
-    
-    char* pp = NULL;
-    if (PCR_flag) {
-        pp = (char*)&program_clock_reference_base;
-        pp[5] = *p++;
-        pp[4] = *p++;
-        pp[3] = *p++;
-        pp[2] = *p++;
-        pp[1] = *p++;
-        pp[0] = *p++;
-        
-        program_clock_reference_extension = program_clock_reference_base & 0x1ff;
-        program_clock_reference_base = (program_clock_reference_base >> 15) & 0x1ffffffff;
-        
-        // high 9bits
-        pcr = program_clock_reference_extension;
-        pcr = (pcr << 33) & 0x3fe00000000;
-        // low 33bits
-        pcr |= program_clock_reference_base;
-    }
-    if (OPCR_flag) {
-        pp = (char*)&original_program_clock_reference_base;
-        pp[5] = *p++;
-        pp[4] = *p++;
-        pp[3] = *p++;
-        pp[2] = *p++;
-        pp[1] = *p++;
-        pp[0] = *p++;
-        
-        original_program_clock_reference_extension = original_program_clock_reference_base & 0x1ff;
-        original_program_clock_reference_base = (original_program_clock_reference_base >> 15) & 0x1ffffffff;
-        
-        // high 9bits
-        original_pcr = program_clock_reference_extension;
-        original_pcr = (original_pcr << 33) & 0x3fe00000000;
-        // low 33bits
-        original_pcr |= program_clock_reference_base;
-    }
-    if (splicing_point_flag) {
-        splice_countdown = *p++;
-    }
-    if (transport_private_data_flag) {
-        transport_private_data_length = *p++;
-        transport_private_data = new char[transport_private_data_length];
-        for (int i = 0; i < transport_private_data_length; i++) {
-            transport_private_data[i] = *p++;
-        }
-    }
-    if (adaptation_field_extension_flag) {
-        adaptation_field_extension_length = *p++;
-        u_int8_t* pos_af_ext = p;
-        
-        ltw_flag = *p++;
-        
-        piecewise_rate_flag = (ltw_flag >> 6) & 0x01;
-        seamless_splice_flag = (ltw_flag >> 5) & 0x01;
-        ltw_flag = (ltw_flag >> 7) & 0x01;
-        
-        if (ltw_flag) {
-            pp = (char*)&ltw_offset;
-            pp[1] = *p++;
-            pp[0] = *p++;
-            
-            ltw_valid_flag = (ltw_offset >> 15) &0x01;
-            ltw_offset &= 0x7FFF;
-        }
-        if (piecewise_rate_flag) {
-            pp = (char*)&piecewise_rate;
-            pp[2] = *p++;
-            pp[1] = *p++;
-            pp[0] = *p++;
-            
-            piecewise_rate &= 0x3FFFFF;
-        }
-        if (seamless_splice_flag) {
-            // 1B
-            marker_bit0 = *p++;
-            
-            splice_type = (marker_bit0 >> 4) & 0x0F;
-            DTS_next_AU0 = (marker_bit0 >> 1) & 0x07;
-            marker_bit0 &= 0x01;
-            
-            // 2B
-            pp = (char*)&DTS_next_AU1;
-            pp[1] = *p++;
-            pp[0] = *p++;
-            
-            marker_bit1 = DTS_next_AU1 & 0x01;
-            DTS_next_AU1 = (DTS_next_AU1 >> 1) & 0x7FFF;
-            
-            // 2B
-            pp = (char*)&DTS_next_AU2;
-            pp[1] = *p++;
-            pp[0] = *p++;
-            
-            marker_bit2 = DTS_next_AU2 & 0x01;
-            DTS_next_AU2 = (DTS_next_AU2 >> 1) & 0x7FFF;
-        }
-        
-        // af_ext_reserved
-        int ext_size = adaptation_field_extension_length - (p - pos_af_ext);
-        if (ext_size > 0) {
-            af_ext_reserved = new char[ext_size];
-            memcpy(af_ext_reserved, p, ext_size);
-            p += ext_size;
-        }
-    }
-    
-    // af_reserved
-    int af_size = adaption_field_length - (p - pos_af);
-    if (af_size > 0) {
-        af_reserved = new char[af_size];
-        memcpy(af_reserved, p, af_size);
-        p += af_size;
-    }
-    
-    trace("ts+af af flags parsed, discontinuity: %d random: %d priority: %d PCR: %d OPCR: %d slicing: %d private: %d extension: %d pcr: %"PRId64" opcr: %"PRId64"",
-        discontinuity_indicator, random_access_indicator, elementary_stream_priority_indicator, PCR_flag, OPCR_flag, splicing_point_flag,
-        transport_private_data_flag, adaptation_field_extension_flag, pcr, original_pcr);
-    
-    return ret;
-}
-
-TSPayloadReserved::TSPayloadReserved()
-{
-    size = 0;
-    bytes = NULL;
-}
-
-TSPayloadReserved::~TSPayloadReserved()
-{
-    srs_freepa(bytes);
-}
-
-int TSPayloadReserved::demux(TSContext* ctx, TSPacket* pkt, u_int8_t* start, u_int8_t* last, u_int8_t*& p, TSMessage*& pmsg)
-{
-    int ret = 0;
-    
-    size = pkt->payload->size - pkt->payload->pointer_field_size;
-
-    // not parsed bytes.
-    if (size > 0) {
-        bytes = new char[size];
-        memcpy(bytes, p, size);
-        p += size;
-    }
-
-    return ret;
-}
-
-TSPayloadPAT::TSPayloadPAT()
-{
-    table_id = 0;
-    section_syntax_indicator = 0;
-    const0_value = 0;
-    section_length = 0;
-    transport_stream_id = 0;
-    version_number = 0;
-    current_next_indicator = 0;
-    section_number = 0;
-    last_section_number = 0;
-    program_size = 0;
-    programs = NULL;
-    CRC_32 = 0;
-}
-
-TSPayloadPAT::~TSPayloadPAT()
-{
-    srs_freepa(programs);
-}
-
-int TSPayloadPAT::demux(TSContext* ctx, TSPacket* pkt, u_int8_t* start, u_int8_t* last, u_int8_t*& p, TSMessage*& pmsg)
-{
-    int ret = 0;
-    
-    table_id = *p++;
-    
-    char* pp = (char*)&section_length;
-    pp[1] = *p++;
-    pp[0] = *p++;
-    u_int8_t* pos = p;
-    
-    section_syntax_indicator = (section_length >> 15) & 0x01;
-    const0_value = (section_length >> 14) & 0x01;
-    section_length &= 0x0FFF;
-    
-    pp = (char*)&transport_stream_id;
-    pp[1] = *p++;
-    pp[0] = *p++;
-    
-    current_next_indicator = *p++;
-    version_number = (current_next_indicator >> 1) & 0x1F;
-    current_next_indicator &= 0x01;
-    
-    section_number = *p++;
-    last_section_number = *p++;
-    
-    // 4 is crc size.
-    int program_bytes = section_length - 4 - (p - pos);
-    program_size = program_bytes / 4;
-    if (program_size > 0) {
-        programs = new int32_t[program_size];
-        for (int i = 0; i < program_size; i++) {
-            pp = (char*)&programs[i];
-            pp[3] = *p++;
-            pp[2] = *p++;
-            pp[1] = *p++;
-            pp[0] = *p++;
-            
-            int16_t pid = programs[i] & 0x1FFF;
-            ctx->push((TSPidTable)pid, TSStreamTypeReserved, TSPidTypePMT, pkt->header->continuity_counter);
-        }
-    }
-    
-    pp = (char*)&CRC_32;
-    pp[3] = *p++;
-    pp[2] = *p++;
-    pp[1] = *p++;
-    pp[0] = *p++;
-    
-    return ret;
-}
-
-TSPMTESInfo::TSPMTESInfo()
-{
-    stream_type = 0;
-    elementary_PID = 0;
-    ES_info_length = 0;
-	ES_info = NULL;
-}
-
-TSPMTESInfo::~TSPMTESInfo()
-{
-	srs_freepa(ES_info);
-}
-
-TSPayloadPMT::TSPayloadPMT()
-{
-    table_id = 0;
-    section_syntax_indicator = 0;
-    const0_value = 0;
-    section_length = 0;
-    program_number = 0;
-    version_number = 0;
-    current_next_indicator = 0;
-    section_number = 0;
-    last_section_number = 0;
-    PCR_PID = 0;
-    program_info_length = 0;
-    program_info_desc = NULL;
-    CRC_32 = 0;
-}
-
-TSPayloadPMT::~TSPayloadPMT()
-{
-	srs_freepa(program_info_desc);
-	
-	for (std::vector<TSPMTESInfo*>::iterator it = ES_info.begin(); it != ES_info.end(); ++it) {
-		TSPMTESInfo* info = *it;
-		srs_freep(info);
-	}
-	ES_info.clear();
-}
-
-TSPMTESInfo* TSPayloadPMT::at(int index)
-{
-	return ES_info.at(index);
-}
-
-int TSPayloadPMT::demux(TSContext* ctx, TSPacket* pkt, u_int8_t* start, u_int8_t* last, u_int8_t*& p, TSMessage*& pmsg)
-{
-    int ret = 0;
-    
-    table_id = *p++;
-    
-    char* pp = (char*)&section_length;
-    pp[1] = *p++;
-    pp[0] = *p++;
-    u_int8_t* pos = p;
-    
-    section_syntax_indicator = (section_length >> 15) & 0x01;
-    const0_value = (section_length >> 14) & 0x01;
-    section_length &= 0x0FFF;
-    
-    pp = (char*)&program_number;
-    pp[1] = *p++;
-    pp[0] = *p++;
-    
-    current_next_indicator = *p++;
-    version_number = (current_next_indicator >> 1) & 0x1F;
-    current_next_indicator &= 0x01;
-    
-    section_number = *p++;
-    last_section_number = *p++;
-    
-    pp = (char*)&PCR_PID;
-    pp[1] = *p++;
-    pp[0] = *p++;
-    
-    PCR_PID &= 0x1FFF;
-    
-    pp = (char*)&program_info_length;
-    pp[1] = *p++;
-    pp[0] = *p++;
-    
-    program_info_length &= 0xFFF;
-    
-    if (program_info_length > 0) {
-	    program_info_desc = new char[program_info_length];
-	    memcpy(program_info_desc, p, program_info_length);
-	    p += program_info_length;
-    }
-    
-    // [section_length] - 4(CRC) - 9B - [program_info_length]
-    int ES_bytes = section_length - 4 - 9 - program_info_length;
-    while (ES_bytes > 0) {
-	    TSPMTESInfo* info = new TSPMTESInfo();
-	    
-	    info->stream_type = *p++;
-	    ES_bytes--;
-	    
-	    pp = (char*)&info->elementary_PID;
-	    pp[1] = *p++;
-	    pp[0] = *p++;
-	    ES_bytes -= 2;
-	    
-	    info->elementary_PID &= 0x1FFF;
-	    
-	    pp = (char*)&info->ES_info_length;
-	    pp[1] = *p++;
-	    pp[0] = *p++;
-	    ES_bytes -= 2;
-	    
-	    info->ES_info_length &= 0x0FFF;
-	    
-	    if (info->ES_info_length > 0) {
-	        info->ES_info = new char[info->ES_info_length];
-	        memcpy(info->ES_info, p, info->ES_info_length);
-	        
-	        p += info->ES_info_length;
-	        ES_bytes -= info->ES_info_length;
-	    }
-	    
-	    ES_info.push_back(info);
-		
-		if (info->stream_type == TSStreamTypeVideoH264) {
-			// TODO: support more video type.
-			ctx->push((TSPidTable)info->elementary_PID, (TSStreamType)info->stream_type, TSPidTypeVideo, pkt->header->continuity_counter);
-			trace("ts+pmt add pid: %d, type: H264 video", info->elementary_PID);
-		} else if (info->stream_type == TSStreamTypeAudioAAC) {
-			// TODO: support more audio type.
-			// see aac: 6.2 Audio Data Transport Stream, ADTS
-			ctx->push((TSPidTable)info->elementary_PID, (TSStreamType)info->stream_type, TSPidTypeAudio, pkt->header->continuity_counter);
-			trace("ts+pmt add pid: %d, type: AAC audio", info->elementary_PID);
-		} else {
-			trace("ts+pmt ignore the stream type: %d", info->stream_type);
-		}
-    }
-    
-    pp = (char*)&CRC_32;
-    pp[3] = *p++;
-    pp[2] = *p++;
-    pp[1] = *p++;
-    pp[0] = *p++;
-    
-    return ret;
-}
-
-TSPayloadPES::TSPayloadPES()
-{
-    packet_start_code_prefix = 0;
-    stream_id = 0;
-    PES_packet_length = 0;
-    PES_scrambling_control = 0;
-    PES_priority = 0;
-    data_alignment_indicator = 0;
-    copyright = 0;
-    original_or_copy = 0;
-    PTS_DTS_flags = 0;
-    ESCR_flag = 0;
-    ES_rate_flag = 0;
-    DSM_trick_mode_flag = 0;
-    additional_copy_info_flag = 0;
-    PES_CRC_flag = 0;
-    PES_extension_flag = 0;
-    PES_header_data_length = 0;
-    pts = 0;
-    dts = 0;
-    ESCR_extension = 0;
-    ESCR_base = 0;
-    ES_rate = 0;
-    trick_mode_control = 0;
-    trick_mode_value = 0;
-    additional_copy_info = 0;
-    previous_PES_packet_CRC = 0;
-    PES_private_data_flag = 0;
-    pack_header_field_flag = 0;
-    program_packet_sequence_counter_flag = 0;
-    P_STD_buffer_flag = 0;
-    PES_extension_flag_2 = 0;
-    PES_private_data = NULL;
-    pack_field_length = 0;
-    pack_field = NULL;
-    program_packet_sequence_counter = 0;
-    MPEG1_MPEG2_identifier = 0;
-    original_stuff_length = 0;
-    P_STD_buffer_scale = 0;
-    P_STD_buffer_size = 0;
-    PES_extension_field_length = 0;
-    PES_extension_field = NULL;
-    stuffing_size = 0;
-    stuffing_byte = NULL;
-}
-
-TSPayloadPES::~TSPayloadPES()
-{
-	srs_freepa(PES_private_data);
-	srs_freepa(pack_field);
-	srs_freepa(PES_extension_field);
-	srs_freepa(stuffing_byte);
-}
-
-int64_t TSPayloadPES::decode_33bits_int(u_int8_t*& p, int64_t& temp)
-{
-	char* pp = (char*)&temp;
-	pp[4] = *p++;
-	pp[3] = *p++;
-	pp[2] = *p++;
-	pp[1] = *p++;
-	pp[0] = *p++;
-	
-	return decode_33bits_int(temp);
-}
-
-int64_t TSPayloadPES::decode_33bits_int(int64_t& temp)
-{
-    int64_t ret = 0;
-	
-	// marker_bit 1bit
-	temp = temp >> 1;
-	// PTS [14..0] 15bits
-	ret |= temp & 0x3fff;
-	// marker_bit 1bit
-	temp = temp >> 1;
-	// PTS [29..15] 15bits, 15zero, 29-15+1one
-	ret |= temp & 0x3fff8000;
-	// marker_bit 1bit
-	temp = temp >> 1;
-	// PTS [32..30] 3bits
-	ret |= temp & 0x1c0000000;
-	
-	temp = temp >> 33;
-	
-	return ret;
-}
-
-int TSPayloadPES::demux(TSContext* ctx, TSPacket* pkt, u_int8_t* start, u_int8_t* last, u_int8_t*& p, TSMessage*& pmsg)
-{
-    int ret = 0;
-    
-    char* pp = (char*)&packet_start_code_prefix;
-    pp[2] = *p++;
-    pp[1] = *p++;
-    pp[0] = *p++;
-    
-    packet_start_code_prefix &= 0xFFFFFF;
-	if (packet_start_code_prefix != 0x01) {
-		trace("ts+pes decode unit start packet error, msg is empty.");
-		return -1;
-	}
-
-	stream_id = *p++;
-	
-	pp = (char*)&PES_packet_length;
-	pp[1] = *p++;
-	pp[0] = *p++;
-	u_int8_t* pos_packet = p;
-	
-	if (stream_id != PES_program_stream_map
-	    && stream_id != PES_padding_stream
-	    && stream_id != PES_private_stream_2
-	    && stream_id != PES_ECM_stream
-	    && stream_id != PES_EMM_stream
-	    && stream_id != PES_program_stream_directory
-	    && stream_id != PES_DSMCC_stream
-	    && stream_id != PES_H_222_1_type_E
-	) {
-		original_or_copy = *p++;
-		
-		//int8_t const2bits = (original_or_copy >> 6) & 0x03;
-		PES_scrambling_control = (original_or_copy >> 4) & 0x03;
-		PES_priority = (original_or_copy >> 3) & 0x01;
-		data_alignment_indicator = (original_or_copy >> 2) & 0x01;
-		copyright = (original_or_copy >> 1) & 0x01;
-		original_or_copy &= 0x01;
-		
-		PES_extension_flag = *p++;
-		
-		PTS_DTS_flags = (PES_extension_flag >> 6) & 0x03;
-		ESCR_flag = (PES_extension_flag >> 5) & 0x01;
-		ES_rate_flag = (PES_extension_flag >> 4) & 0x01;
-		DSM_trick_mode_flag = (PES_extension_flag >> 3) & 0x01;
-		additional_copy_info_flag = (PES_extension_flag >> 2) & 0x01;
-		PES_CRC_flag = (PES_extension_flag >> 1) & 0x01;
-		PES_extension_flag &= 0x01;
-		
-		PES_header_data_length = *p++;
-		u_int8_t* pos_header = p;
-
-		int64_t temp = 0;
-		if (PTS_DTS_flags == 0x2) {
-			pts = decode_33bits_int(p, temp);
-			// '0010' 4bits
-			//int8_t const4bits = temp & 0x0F;
-		}
-
-		if (PTS_DTS_flags == 0x3) {
-			pts = decode_33bits_int(p, temp);
-			// '0011' 4bits
-			//int8_t const4bits = temp & 0x0F;
-			
-			dts = decode_33bits_int(p, temp);
-			// '0001' 4bits
-			//int8_t const4bits = temp & 0x0F;
-		}
-		
-		if (ESCR_flag) {
-			pp = (char*)&temp;
-			pp[5] = *p++;
-			pp[4] = *p++;
-			pp[3] = *p++;
-			pp[2] = *p++;
-			pp[1] = *p++;
-			pp[0] = *p++;
-			
-			// marker_bit 1bit
-			temp = temp >> 1;
-			// ESCR_extension 9bits
-			ESCR_extension = temp & 0x1f;
-			temp = temp >> 9;
-			
-			ESCR_base = decode_33bits_int(temp);
-			
-			// reserved 2bits
-			//int8_t reserved2bits = temp & 0x03;
-		}
-		
-		if (ES_rate_flag) {
-			pp = (char*)&ES_rate;
-			pp[2] = *p++;
-			pp[1] = *p++;
-			pp[0] = *p++;
-			
-			ES_rate = ES_rate >> 1;
-			ES_rate &= 0x3FFFFF;
-		}
-
-		if (DSM_trick_mode_flag) {
-			trick_mode_control = *p++;
-
-			trick_mode_value = trick_mode_control & 0x1f;
-			trick_mode_control = (trick_mode_control >> 5) & 0x03;
-		}
-		
-		if (additional_copy_info_flag) {
-			additional_copy_info = *p++;
-			additional_copy_info &= 0x7f;
-		}
-		
-		if (PES_CRC_flag) {
-			pp = (char*)&previous_PES_packet_CRC;
-			pp[1] = *p++;
-			pp[0] = *p++;
-		}
-
-		if (PES_extension_flag) {
-			PES_extension_flag_2 = *p++;
-			
-			PES_private_data_flag = (PES_extension_flag_2 >> 7) & 0x01;
-			pack_header_field_flag = (PES_extension_flag_2 >> 6) & 0x01;
-			program_packet_sequence_counter_flag = (PES_extension_flag_2 >> 5) & 0x01;
-			P_STD_buffer_flag = (PES_extension_flag_2 >> 4) & 0x01;
-			PES_extension_flag_2 &= PES_extension_flag_2 & 0x01;
-			
-			if (PES_private_data_flag) {
-				PES_private_data = new char[16];
-				memcpy(PES_private_data, p, 16);
-				p += 16;
-			}
-			
-			if (pack_header_field_flag) {
-				pack_field_length = *p++;
-				if (pack_field_length > 0) {
-					pack_field = new char[pack_field_length];
-					memcpy(pack_field, p, pack_field_length);
-					p += pack_field_length;
-				}
-			}
-			
-			if (program_packet_sequence_counter_flag) {
-				program_packet_sequence_counter = *p++;
-				program_packet_sequence_counter &= 0x7f;
-				
-				original_stuff_length = *p++;
-				MPEG1_MPEG2_identifier = (original_stuff_length >> 6) & 0x01;
-				original_stuff_length &= 0x3f;
-			}
-			
-			if (P_STD_buffer_flag) {
-				pp = (char*)&P_STD_buffer_size;
-				pp[1] = *p++;
-				pp[0] = *p++;
-				
-				// '01'
-				//int8_t const2bits = (P_STD_buffer_scale >>14) & 0x03;
-
-				P_STD_buffer_scale = (P_STD_buffer_scale >>13) & 0x01;
-				P_STD_buffer_size &= 0x1FFF;
-			}
-			
-			if (PES_extension_flag_2) {
-				PES_extension_field_length = *p++;
-				PES_extension_field_length &= 0x07;
-				
-				if (PES_extension_field_length > 0) {
-					PES_extension_field = new char[PES_extension_field_length];
-					memcpy(PES_extension_field, p, PES_extension_field_length);
-					p += PES_extension_field_length;
-				}
-			}
-		}
-		
-		// stuffing_byte
-		int stuffing_size = PES_header_data_length - (p - pos_header);
-		if (stuffing_size > 0) {
-			stuffing_byte = new char[stuffing_size];
-			memcpy(stuffing_byte, p, stuffing_size);
-			p += stuffing_size;
-		}
-		
-		// get the pid.
-		TSPid* pid = ctx->get(pkt->header->pid);
-		if (!pid) {
-			trace("ts+pes pid: %d type is invalid.", pkt->header->pid);
-		}
-		
-		// get the message to build from the chunks(PES packets).
-		TSMessage* msg = ctx->get_msg(pid->pid);
-
-		msg->type = pid->type;
-		msg->stream_type = pid->stream_type;
-		msg->continuity_counter = pid->continuity_counter;
-		msg->stream_id = stream_id;
-		msg->packet_start_code_prefix = packet_start_code_prefix;
-		msg->dts = dts;
-		msg->pts = pts;
-		
-		// PES_packet_data_byte, page58.
-		// the packet size contains the header size.
-		// The number of PES_packet_data_bytes, N, is specified by the 
-		// PES_packet_length field. N shall be equal to the value 
-		// indicated in the PES_packet_length minus the number of bytes 
-		// between the last byte of the PES_packet_length field and the 
-		// first PES_packet_data_byte.
-		msg->PES_packet_length = PES_packet_length;
-		msg->packet_header_size = p - pos_packet;
-		msg->packet_data_size = PES_packet_length - msg->packet_header_size;
-		if (PES_packet_length == 0) {
-			msg->packet_data_size = last - p - msg->packet_header_size;
-		}
-		
-		if (msg->packet_data_size > 0) {
-			msg->packet_data = new char[msg->packet_data_size];
-		}
-		
-		// PES_packet_data_byte
-		int size = srs_min(msg->packet_data_size, last - p);
-		if (size > 0) {
-			msg->append(p, size);
-		}
-		
-		if (PES_packet_length > 0) {
-			msg->detach(ctx, pmsg);
-		}
-	
-		trace("ts+pes stream_id: %d size: %d pts: %"PRId64" dts: %"PRId64" total: %d header: %d packet_size: %d parsed_size: %d",
-			stream_id, PES_packet_length, pts, dts, msg->PES_packet_length, msg->packet_header_size, msg->packet_data_size, msg->parsed_packet_size);
-	} else if (stream_id == PES_program_stream_map
-		|| stream_id == PES_private_stream_2
-		|| stream_id == PES_ECM_stream
-		|| stream_id == PES_EMM_stream
-		|| stream_id == PES_program_stream_directory
-		|| stream_id == PES_DSMCC_stream
-		|| stream_id == PES_H_222_1_type_E
-	) {
-		// for (i = 0; i < PES_packet_length; i++) {
-		// 		PES_packet_data_byte
-		// }
-	} else if (stream_id != PES_padding_stream) {
-		// for (i = 0; i < PES_packet_length; i++) {
-		// 		padding_byte
-		// }
-	}
-    
-    return ret;
-}
-
-/**
-* 2.4.3.6 PES packet. page 49.
-*/
-
-TSPayload::TSPayload()
-{
-    size = 0;
-    pointer_field_size = 0;
-    type = TSPidTypeReserved;
-    pointer_field = 0;
-    reserved = NULL;
-    pat = NULL;
-    pmt = NULL;
-    pes = NULL;
-    
-}
-
-TSPayload::~TSPayload()
-{
-    srs_freep(reserved);
-    srs_freep(pat);
-    srs_freep(pmt);
-    srs_freep(pes);
-}
-
-void TSPayload::read_pointer_field(TSPacket* pkt, u_int8_t*& p)
-{
-    if (pkt->header->payload_unit_start_indicator) {
-        pointer_field = *p++;
-        pointer_field_size = 1;
-    }
-}
-
-int TSPayload::demux(TSContext* ctx, TSPacket* pkt, u_int8_t* start, u_int8_t* last, u_int8_t*& p, TSMessage*& pmsg)
-{
-    int ret = 0;
-    
-    if (pkt->header->pid == TSPidTablePAT) {
-        read_pointer_field(pkt, p);
-        
-        type = TSPidTypePAT;
-        pat = new TSPayloadPAT();
-        return pat->demux(ctx, pkt, start, last, p, pmsg);
-    }
-    
-    TSPid* pid = ctx->get(pkt->header->pid);
-    if (pid && pid->type == TSPidTypePMT) {
-        read_pointer_field(pkt, p);
-        
-        type = pid->type;
-        pmt = new TSPayloadPMT();
-        return pmt->demux(ctx, pkt, start, last, p, pmsg);
-    }
-    if (pid && (pid->type == TSPidTypeVideo || pid->type == TSPidTypeAudio)) {
-	    TSMessage* msg = ctx->get_msg(pkt->header->pid);
-	    
-        // flush previous PES_packet_length(0) packets.
-        if (msg->packet_start_code_prefix == 0x01 
-            && pkt->header->payload_unit_start_indicator == 1
-        	&& msg->PES_packet_length == 0
-        ) {
-            msg->detach(ctx, pmsg);
-            // reparse current message
-            p = start;
-            return ret;
-        }
-        
-		// parse continous packet.
-	    if (!pkt->header->payload_unit_start_indicator) {
-			if (msg->packet_start_code_prefix != 0x01) {
-				trace("ts+pes decode continous packet error, msg is empty.");
-				return -1;
-			}
-			msg->append(p, last - p);
-			
-			// for PES_packet_length is 0, donot attach it.
-			if (msg->PES_packet_length > 0) {
-				msg->detach(ctx, pmsg);
-			}
-			return ret;
-	    }
-	    
-        type = pid->type;
-        pes = new TSPayloadPES();
-        return pes->demux(ctx, pkt, start, last, p, pmsg);
-    }
-    
-    // not parsed bytes.
-    type = TSPidTypeReserved;
-    reserved = new TSPayloadReserved();
-    if ((ret = reserved->demux(ctx, pkt, start, last, p, pmsg)) != 0) {
-        return ret;
-    }
-    
-    return ret;
-}
-
-TSPacket::TSPacket()
-{
-    header = new TSHeader();
-    adaption_field = new TSAdaptionField();
-    payload = new TSPayload();
-}
-
-TSPacket::~TSPacket()
-{
-    srs_freep(header);
-    srs_freep(adaption_field);
-    srs_freep(payload);
-}
-
-int TSPacket::demux(TSContext* ctx, u_int8_t* start, u_int8_t* last, u_int8_t*& p, TSMessage*& pmsg)
-{
-    int ret = 0;
-    
-    if ((ret = header->demux(ctx, this, start, last, p, pmsg))  != 0) {
-        return ret;
-    }
-
-    if (header->adaption_field_control == TSAdaptionTypeAdaptionOnly || header->adaption_field_control == TSAdaptionTypeBoth) {
-        if ((ret = adaption_field->demux(ctx, this, start, last, p, pmsg)) != 0) {
-            trace("ts+header af(adaption field) decode error. ret=%d", ret);
-            return ret;
-        }
-        trace("ts+header af(adaption field) decoded.");
-    }
-    
-    // calc the user defined data size for payload.
-    payload->size = TS_PACKET_SIZE - header->get_size() - adaption_field->get_size();
-    
-    if (header->adaption_field_control == TSAdaptionTypePayloadOnly || header->adaption_field_control == TSAdaptionTypeBoth) {
-	    // parse new packet.
-        if ((ret = payload->demux(ctx, this, start, last, p, pmsg)) != 0) {
-            trace("ts+header payload decode error. ret=%d", ret);
-            return ret;
-        }
-        trace("ts+header payload decoded.");
-    }
-    
-    ctx->ts_packet_count++;
-    trace("ts+header parsed %"PRId64" packets finished. parsed: %d left: %d header: %d payload: %d(%d+%d)", 
-        ctx->ts_packet_count, (int)(p - start), (int)(last - p), header->get_size(), payload->size, payload->pointer_field_size, 
-        payload->size - payload->pointer_field_size);
-    
-    return finish();
-}
-
-int TSPacket::finish()
-{
-    return 0;
-}
-    
-TSHeader::TSHeader()
-{
-    sync_byte = 0;
-    transport_error_indicator = 0;
-    payload_unit_start_indicator = 0;
-    transport_priority = 0;
-    pid = TSPidTablePAT;
-    transport_scrambling_control = 0;
-    adaption_field_control = TSAdaptionTypeReserved;
-    continuity_counter = 0;
-}
-
-TSHeader::~TSHeader()
-{
-}
-
-int TSHeader::get_size()
-{
-    return 4;
-}
-
-int TSHeader::demux(TSContext* ctx, TSPacket* pkt, u_int8_t* start, u_int8_t* last, u_int8_t*& p, TSMessage*& pmsg)
-{
-    int ret = 0;
-
-    // ts packet header.
-    sync_byte = *p++;
-    if (sync_byte != 0x47) {
-        trace("ts+sync_bytes invalid sync_bytes: %#x, expect is 0x47", sync_byte);
-        return -1;
-    }
-    
-    int16_t _pid = 0;
-    char* pp = (char*)&_pid;
-    pp[1] = *p++;
-    pp[0] = *p++;
-    
-    transport_error_indicator = (_pid >> 15) & 0x01;
-    payload_unit_start_indicator = (_pid >> 14) & 0x01;
-    transport_priority = (_pid >> 13) & 0x01;
-    _pid &= 0x1FFF;
-    
-    pid = (TSPidTable)_pid;
-    
-    continuity_counter = *p++;
-    
-    transport_scrambling_control = (continuity_counter >> 6) & 0x03;
-    int8_t _adaption_field_control = (continuity_counter >> 4) & 0x03;
-    adaption_field_control = (TSAdaptionType)_adaption_field_control;
-    continuity_counter &= 0x0F;
-    
-    ctx->push(pid, TSStreamTypeReserved, TSPidTypePAT, continuity_counter);
-    
-    trace("ts+header sync: %#x error: %d unit_start: %d priotiry: %d pid: %d scrambling: %d adaption: %d counter: %d",
-        sync_byte, transport_error_indicator, payload_unit_start_indicator, transport_priority, pid,
-        transport_scrambling_control, adaption_field_control, continuity_counter);
-        
-    return ret;
-}
-
-/**
-* Annex B Byte stream format, in page 211.
-*/
-class TSH264Codec
-{
-public:
-	u_int8_t* raw_data;
-	int size;
-	
-	TSH264Codec()
-	{
-		size = 0;
-		raw_data = NULL;
-	}
-	
-	u_int8_t at(int index)
-	{
-		if (index >= size) {
-			return 0;
-		}
-		return raw_data[index];
-	}
-	
-	int parse(TSMessage* msg, char* last, char*& p)
-	{
-		int ret = 0;
-		
-		srs_assert(p);
-		
-		while (next_start_code_prefix(p) != 0x000001) {
-			char ch = *p++;
-			if (ch != 0x00) {
-				trace("ts+h264 parse msg failed, "
-					"expect 0x00 before start-code. actual is: %#x", (u_int8_t)ch);
-				return -1;
-			}
-		}
-		
-		if (p >= last) {
-			trace("ts+h264 parse msg finished, no start-code.");
-			return ret;
-		}
-		
-		// start_code_prefix_one_3bytes /* equal to 0x000001 */
-		p += 3;
-		
-		if (p < last) {
-			raw_data = (u_int8_t*)p;
-		}
-		while (p < last - 3) {
-			if (match_start_code_prefix(p)) {
-				break;
-			}
-			p++;
-		}
-		
-		if (raw_data) {
-			size = (u_int8_t*)p - raw_data;
-			if (p == last - 3) {
-				size = (u_int8_t*)last - raw_data;
-				p = last;
-			}
-		}
-		
-		trace("ts+h264 parse msg finished");
-		return ret;
-	}
-	
-	bool match_start_code_prefix(char*p)
-	{
-		return p[0] == 0x00 && p[1] == 0x00 && (p[2] == 0x00 || p[2] == 0x01);
-	}
-	
-	int32_t next_start_code_prefix(char* p)
-	{
-		int32_t value = 0;
-		char* pp = (char*)&value;
-		
-		pp[2] = p[0];
-		pp[1] = p[1];
-		pp[0] = p[2];
-
-		return value;
-	}
-};
-
-/**
-* Table 35 – Sampling frequency dependent on
-* sampling_frequency_index. in page 46.
-*/
-enum TSAacSampleFrequency
-{
-	TSAacSampleFrequency96000 		= 0x00,
-	TSAacSampleFrequency88200 		= 0x01,
-	TSAacSampleFrequency64000 		= 0x02,
-	TSAacSampleFrequency48000 		= 0x03,
-	TSAacSampleFrequency44100 		= 0x04,
-	TSAacSampleFrequency32000 		= 0x05,
-	TSAacSampleFrequency24000 		= 0x06,
-	TSAacSampleFrequency22050 		= 0x07,
-	TSAacSampleFrequency16000 		= 0x08,
-	TSAacSampleFrequency12000 		= 0x09,
-	TSAacSampleFrequency11025 		= 0x0a,
-	TSAacSampleFrequency8000  		= 0x0b,
-	TSAacSampleFrequencyReserved0 	= 0x0c,
-	TSAacSampleFrequencyReserved1 	= 0x0d,
-	TSAacSampleFrequencyReserved2 	= 0x0e,
-	TSAacSampleFrequencyReserved3 	= 0x0f,
-};
-
-/**
-* 6.2 Audio Data Transport Stream, ADTS, in page 26.
-*/
-class TSAacAdts
-{
-public:
-	// adts_fixed_header
-	// 2B, 16bits
-	int16_t syncword; //12bits
-	int8_t ID; //1bit
-	int8_t layer; //2bits
-	int8_t protection_absent; //1bit
-	// 12bits
-	int8_t profile; //2bit
-	TSAacSampleFrequency sampling_frequency_index; //4bits
-	int8_t private_bit; //1bit
-	int8_t channel_configuration; //3bits
-	int8_t original_or_copy; //1bit
-	int8_t home; //1bit
-	
-	// adts_variable_header
-	// 28bits
-	int8_t copyright_identification_bit; //1bit
-	int8_t copyright_identification_start; //1bit
-	int16_t frame_length; //13bits
-	int16_t adts_buffer_fullness; //11bits
-	int8_t number_of_raw_data_blocks_in_frame; //2bits
-	
-	u_int8_t* raw_data;
-	int size;
-	
-	TSAacAdts()
-	{
-		syncword = 0;
-		ID = 0;
-		layer = 0;
-		protection_absent = 0;
-		profile = 0;
-		sampling_frequency_index = TSAacSampleFrequencyReserved0;
-		private_bit = 0;
-		channel_configuration = 0;
-		original_or_copy = 0;
-		home = 0;
-		copyright_identification_bit = 0;
-		copyright_identification_start = 0;
-		frame_length = 0;
-		adts_buffer_fullness = 0;
-		number_of_raw_data_blocks_in_frame = 0;
-		
-		size = 0;
-		raw_data = NULL;
-	}
-	
-	u_int8_t at(int index)
-	{
-		if (index >= size) {
-			return 0;
-		}
-		return raw_data[index];
-	}
-	
-	int parse(TSMessage* msg, char*& p)
-	{
-		int ret = 0;
-		
-		srs_assert(p);
-		
-		char* start = p;
-		
-		// adts_fixed_header
-		char* pp = (char*)&syncword;
-		pp[1] = *p++;
-		pp[0] = *p++;
-		
-		protection_absent = syncword & 0x01;
-		layer = (syncword >> 1) & 0x03;
-		ID = (syncword >> 3) & 0x01;
-		syncword = (syncword >> 4) & 0x0FFF;
-
-		// adts_variable_header
-		int64_t temp = 0;
-		pp = (char*)&temp;
-		pp[4] = *p++;
-		pp[3] = *p++;
-		pp[2] = *p++;
-		pp[1] = *p++;
-		pp[0] = *p++;
-		
-		number_of_raw_data_blocks_in_frame = temp & 0x03;
-		temp = temp >> 2;
-
-		adts_buffer_fullness = temp & 0x7FF;
-		temp = temp >> 11;
-
-		frame_length = temp & 0x1FFF;
-		temp = temp >> 13;
-		
-		copyright_identification_start = temp & 0x01;
-		temp = temp >> 1;
-		
-		copyright_identification_bit = temp & 0x01;
-		temp = temp >> 1;
-		
-		// adts_fixed_header
-		home = temp & 0x01;
-		temp = temp >> 1;
-		
-		original_or_copy = temp & 0x01;
-		temp = temp >> 1;
-		
-		channel_configuration = temp & 0x07;
-		temp = temp >> 3;
-		
-		private_bit = temp & 0x01;
-		temp = temp >> 1;
-		
-		sampling_frequency_index = (TSAacSampleFrequency)(temp & 0x0F);
-		temp = temp >> 4;
-		
-		profile = temp & 0x03;
-		temp = temp >> 2;
-
-		if (!number_of_raw_data_blocks_in_frame) {
-			// adts_error_check
-			if (!protection_absent) {
-				// crc_check
-				trace("ts+aac TODO: crc_check.");
-			}
-			// raw_data_block
-			raw_data = (u_int8_t*)p;
-			size = frame_length - (p - start);
-			p += size;
-		} else {
-			trace("ts+aac TODO: parse multiple blocks.");
-		}
-		
-		return ret;
-	}
-};
-
-class AacMuxer
-{
-public:
-	int fd;
-	const char* file;
-
-	AacMuxer()
-	{
-		file = NULL;
-		fd = 0;
-	}
-	
-	virtual ~AacMuxer()
-	{
-		if (fd > 0) {
-			close(fd);
-		}
-	}
-
-	int open(const char* _file)
-	{
-		file = _file;
-		if ((fd = ::open(file, O_CREAT|O_WRONLY|O_TRUNC, 
-			S_IRUSR|S_IWUSR|S_IRGRP|S_IWGRP|S_IROTH)) < 0 
-		) {
-			return -1;
-		}
-		
-		return 0;
-	}
-
-	int write_audio(char* data, int size)
-	{
-		if (size > 0 && write(fd, data, size) != size) {
-			return -1;
-		}
-		
-		return 0;
-	}
-
-	int write_video(char* data, int size)
-	{
-		return 0;
-	}
-};
-
-int consume(TSMessage* msg, AacMuxer* aac_muxer)
-{
-	int ret = 0;
-	
-	char* p = msg->packet_data;
-	if (!p) {
-		trace("ts+aac+h264 ignore empty message.");
-		return ret;
-	}
-	
-	char* last = msg->packet_data + msg->packet_data_size;
-        
-    if (!msg->is_video()) {
-	    // write AAC raw audio.
-	    if (aac_muxer && (ret = aac_muxer->write_audio((char*)msg->packet_data, msg->packet_data_size)) != 0) {
-	        return ret;
-	    }
-	    
-	    // parse AAC audio.
-	    int64_t dts = -1;
-		while (p < last) {
-		    TSAacAdts aac;
-		    if ((ret = aac.parse(msg, p)) != 0) {
-		        return ret;
-		    }
-		    trace("ts+aac audio raw data parsed, size: %d, 0x%02x 0x%02x 0x%02x 0x%02x",
-		    	aac.size, aac.at(0), aac.at(1), aac.at(2), aac.at(3));
-			
-			if (dts == -1) {
-				dts = (msg->dts == 0)? msg->pts : msg->dts;
-			} else {
-				// see ffmpeg: avpriv_aac_parse_header
-				// rdb = get_bits(gbc, 2);  /* number_of_raw_data_blocks_in_frame */
-				// hdr->samples  = (rdb + 1) * 1024;
-				int samples = (aac.number_of_raw_data_blocks_in_frame + 1) * 1024;
-				static int sample_rates[] = {
-					96000, 88200, 64000, 48000, 44100, 32000,
-					24000, 22050, 16000, 12000, 11025, 8000, 
-					1, 1, 1, 1
-				};
-				int sample_rate = sample_rates[aac.sampling_frequency_index];
-				
-				dts += samples * 90000 / sample_rate;
-			}
-			
-			trace("ts+aac+h264+data %s pts:%"PRId64" dts:%"PRId64" size: %d",
-				(msg->type == TSPidTypeVideo)? "video":"audio", dts, dts, aac.frame_length);
-				
-		    // TODO: process audio.
-		}
-    } else { 	
-		trace("ts+aac+h264+data %s pts:%"PRId64" dts:%"PRId64" size: %d",
-			(msg->type == TSPidTypeVideo)? "video":"audio", msg->pts, 
-			(msg->dts == 0)? msg->pts : msg->dts, msg->packet_data_size);
-		   
-        // parse H264 video.
-		while (p < last) {
-			TSH264Codec h264;
-		    if ((ret = h264.parse(msg, last, p)) != 0) {
-		        return ret;
-		    }
-		    trace("ts+h264 video raw data parsed, size: %d, 0x%02x 0x%02x 0x%02x 0x%02x",
-		    	h264.size, h264.at(0), h264.at(1), h264.at(2), h264.at(3));
-			
-		    // TODO: process video.
-		}
-    }
-    
-	return ret;
-}
-
-int main(int argc, char** argv)
-{
-    const char* file = "livestream-1347.ts";
-    const char* output_aac_file = "output.aac";
-    if (argc > 2) {
-        file = argv[1];
-        output_aac_file = argv[2];
-    }
-    
-    int fd = open(file, O_RDONLY);
-    AacMuxer aac_muxer;
-    
-    int ret = 0;
-    if ((ret = aac_muxer.open(output_aac_file)) != 0) {
-        trace("aac_muxer+open open flv file failed.");
-        return ret;
-    }
-    
-    trace("demuxer+read packet count offset T+0  T+1  T+2  T+3  T+x T+L2 T+L1 T+L0");
-    
-    TSContext ctx;
-    for (int i = 0, offset = 0; ; i++) {
-        u_int8_t ts_packet[TS_PACKET_SIZE];
-        memset(ts_packet, 0, sizeof(ts_packet));
-        
-        int nread = read(fd, ts_packet, sizeof(ts_packet));
-        if (nread == 0) {
-            trace("demuxer+read got EOF, read completed, offset: %07d.", offset);
-            break;
-        }
-        if (nread != TS_PACKET_SIZE) {
-            trace("demuxer+read error to read ts packet. nread=%d", nread);
-            break;
-        }
-        trace("demuxer+read packet %04d %07d 0x%02x 0x%02x 0x%02x 0x%02x ... 0x%02x 0x%02x 0x%02x", 
-            i, offset, ts_packet[0], ts_packet[1], ts_packet[2], ts_packet[3], 
-            ts_packet[TS_PACKET_SIZE - 3], ts_packet[TS_PACKET_SIZE - 2], ts_packet[TS_PACKET_SIZE - 1]);
-        
-        u_int8_t* p = ts_packet;
-        u_int8_t* start = ts_packet;
-        u_int8_t* last = ts_packet + TS_PACKET_SIZE;
-        
-        // maybe need to parse multiple times for the PES_packet_length(0) packets.
-        while (p == start) {
-	        TSPacket pkt;
-	        TSMessage* msg = NULL;
-	        if ((ret = pkt.demux(&ctx, start, last, p, msg)) != 0) {
-	            trace("demuxer+read decode ts packet error. ret=%d", ret);
-	            return ret;
-	        }
-	        
-	        offset += nread;
-	        if (!msg) {
-	            continue;
-	        }
-	        
-	        if ((ret = consume(msg, &aac_muxer)) != 0) {
-	            trace("demuxer+consume parse and consume message failed. ret=%d", ret);
-	            break;
-	        }
-	        
-	        srs_freep(msg);
-        }
-    }
-    
-    close(fd);
-    return ret;
-}
-
+/*
+The MIT License (MIT)
+
+Copyright (c) 2013 winlin
+
+Permission is hereby granted, free of charge, to any person obtaining a copy of
+this software and associated documentation files (the "Software"), to deal in
+the Software without restriction, including without limitation the rights to
+use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of
+the Software, and to permit persons to whom the Software is furnished to do so,
+subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS
+FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR
+COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
+IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+*/
+/**
+g++ -o ts_info ts_info.cc -g -O0 -ansi
+*/
+#if 1
+// for int64_t print using PRId64 format.
+#ifndef __STDC_FORMAT_MACROS
+    #define __STDC_FORMAT_MACROS
+#endif
+#include <inttypes.h>
+
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <fcntl.h>
+#include <unistd.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <assert.h>
+
+#include <vector>
+#include <map>
+
+#define trace(msg, ...) printf(msg"\n", ##__VA_ARGS__);
+#define srs_freep(p) delete p; p = NULL
+#define srs_freepa(p) delete[] p; p = NULL
+#define srs_assert(p) assert(p)
+#define srs_min(a, b) ((a)<(b)? (a):(b))
+
+#endif
+/**
+ISO/IEC 13818-1:2000(E)
+Introduction
+    Intro. 1 Transport Stream
+    Intro. 2 Program Stream
+    Intro. 4 Packetized Elementary Stream
+SECTION 2 – TECHNICAL ELEMENTS
+    2.4 Transport Stream bitstream requirements
+        2.4.1 Transport Stream coding structure and parameters
+        2.4.2 Transport Stream system target decoder
+        2.4.3 Specification of the Transport Stream syntax and semantics
+            2.4.3.1 Transport Stream
+            2.4.3.2 Transport Stream packet layer
+            2.4.3.3 Semantic definition of fields in Transport Stream packet layer
+            2.4.3.5 Semantic definition of fields in adaptation field
+            2.4.3.6 PES packet
+            2.4.3.7 Semantic definition of fields in PES packet
+        2.4.4 Program specific information
+            2.4.4.5 Semantic definition of fields in program association section
+            2.4.4.6 Conditional access Table
+    2.5 Program Stream bitstream requirements
+    2.6 Program and program element descriptors
+    2.7 Restrictions on the multiplexed stream semantics
+Annex A CRC Decoder Model
+*/
+#if 1
+// Transport Stream packets are 188 bytes in length.
+#define TS_PACKET_SIZE          188
+
+enum TSPidTable
+{
+	// Program Association Table(see Table 2-25).
+	TSPidTablePAT	= 0x00,
+	// Conditional Access Table (see Table 2-27).
+	TSPidTableCAT	= 0x01,
+	// Transport Stream Description Table
+	TSPidTableTSDT	= 0x02,
+	// null packets (see Table 2-3)
+	TSPidTableNULL	= 0x01FFF,
+};
+
+/*adaptation_field_control*/
+/**
+* Table 2-5 – Adaptation field control values, page 38.
+*/
+enum TSAdaptionType
+{
+	// Reserved for future use by ISO/IEC
+	TSAdaptionTypeReserved		= 0x00,
+	// No adaptation_field, payload only
+	TSAdaptionTypePayloadOnly 	= 0x01,
+	// Adaptation_field only, no payload
+	TSAdaptionTypeAdaptionOnly 	= 0x02,
+	// Adaptation_field followed by payload
+	TSAdaptionTypeBoth			= 0x03,
+};
+#endif
+
+// Table 2-29 – Stream type assignments. page 66.
+enum TSStreamType
+{
+	// ITU-T | ISO/IEC Reserved
+	TSStreamTypeReserved			= 0x00,
+	/*defined by ffmpeg*/
+	TSStreamTypeVideoMpeg1 			= 0x01,
+	TSStreamTypeVideoMpeg2 			= 0x02,
+	TSStreamTypeAudioMpeg1 			= 0x03,
+	TSStreamTypeAudioMpeg2 			= 0x04,
+	TSStreamTypePrivateSection 		= 0x05,
+	TSStreamTypePrivateData 		= 0x06,
+	TSStreamTypeAudioAAC	 		= 0x0f,
+	TSStreamTypeVideoMpeg4	 		= 0x10,
+	TSStreamTypeVideoH264	 		= 0x1b,
+	TSStreamTypeAudioAC3	 		= 0x81,
+	TSStreamTypeAudioDTS	 		= 0x8a,
+};
+
+/**
+* the actually parsed type.
+*/
+enum TSPidType 
+{
+    TSPidTypeReserved = 0, // TSPidTypeReserved, nothing parsed, used reserved.
+    
+    TSPidTypePAT, // Program associtate table
+    TSPidTypePMT, // Program map table.
+    
+    TSPidTypeVideo, // only for H264 video
+    TSPidTypeAudio, // only for AAC audio
+};
+
+// forward declares.
+class TSHeader;
+class TSAdaptionField;
+class TSPayload;
+class TSPayloadReserved;
+class TSPayloadPAT;
+class TSPayloadPMT;
+class TSPayloadPES;
+class TSContext;
+class TSMessage;
+
+// TSPacket declares.
+class TSPacket
+{
+public:
+	TSHeader* header;
+    TSAdaptionField* adaption_field;
+    TSPayload* payload;
+    
+    TSPacket();
+    virtual ~TSPacket();
+    int demux(TSContext* ctx, u_int8_t* start, u_int8_t* last, u_int8_t*& p, TSMessage*& pmsg);
+    int finish();
+};
+
+/**
+* 2.4.3.2 Transport Stream packet layer. page 36.
+*/
+class TSHeader 
+{
+public:
+    // 1B
+    int8_t sync_byte; //8bits
+    // 2B
+    int8_t transport_error_indicator; //1bit
+    int8_t payload_unit_start_indicator; //1bit
+    int8_t transport_priority; //1bit
+    TSPidTable pid; //13bits
+    // 1B
+    int8_t transport_scrambling_control; //2bits
+    TSAdaptionType adaption_field_control; //2bits
+    u_int8_t continuity_counter; //4bits
+    
+    TSHeader();
+    virtual ~TSHeader();
+    int get_size();
+    int demux(TSContext* ctx, TSPacket* pkt, u_int8_t* start, u_int8_t* last, u_int8_t*& p, TSMessage*& pmsg);
+};
+
+// variant ts packet adation field. page 40.
+class TSAdaptionField 
+{
+public:
+    // 1B
+    u_int8_t adaption_field_length; //8bits
+    // 1B
+    int8_t discontinuity_indicator; //1bit
+    int8_t random_access_indicator; //1bit
+    int8_t elementary_stream_priority_indicator; //1bit
+    int8_t PCR_flag; //1bit
+    int8_t OPCR_flag; //1bit
+    int8_t splicing_point_flag; //1bit
+    int8_t transport_private_data_flag; //1bit
+    int8_t adaptation_field_extension_flag; //1bit
+    
+    // if PCR_flag, 6B
+    int64_t program_clock_reference_base; //33bits
+    //6bits reserved.
+    int16_t program_clock_reference_extension; //9bits
+    
+    // if OPCR_flag, 6B
+    int64_t original_program_clock_reference_base; //33bits
+    //6bits reserved.
+    int16_t original_program_clock_reference_extension; //9bits
+    
+    // if splicing_point_flag, 1B
+    int8_t splice_countdown; //8bits
+    
+    // if transport_private_data_flag, 1+p[0] B
+    u_int8_t transport_private_data_length; //8bits
+    char* transport_private_data; //[transport_private_data_length]bytes
+    
+    // if adaptation_field_extension_flag, 2+x bytes
+    u_int8_t adaptation_field_extension_length; //8bits
+    int8_t ltw_flag; //1bit
+    int8_t piecewise_rate_flag; //1bit
+    int8_t seamless_splice_flag; //1bit
+    //5bits reserved
+    // if ltw_flag, 2B
+    int8_t ltw_valid_flag; //1bit
+    int16_t ltw_offset; //15bits
+    // if piecewise_rate_flag, 3B
+    //2bits reserved
+    int32_t piecewise_rate; //22bits
+    // if seamless_splice_flag, 5B
+    int8_t splice_type; //4bits
+    int8_t DTS_next_AU0; //3bits
+    int8_t marker_bit0; //1bit
+    int16_t DTS_next_AU1; //15bits
+    int8_t marker_bit1; //1bit
+    int16_t DTS_next_AU2; //15bits
+    int8_t marker_bit2; //1bit
+    // left bytes.
+    char* af_ext_reserved;
+    
+    // left bytes.
+    char* af_reserved;
+    
+    // user defined total adaption field size.
+    int __field_size;
+    // logic pcr/original_pcr
+    int64_t pcr;
+    int64_t original_pcr;
+    
+    TSAdaptionField();
+    virtual ~TSAdaptionField();
+    int get_size();
+    int demux(TSContext* ctx, TSPacket* pkt, u_int8_t* start, u_int8_t* last, u_int8_t*& p, TSMessage*& pmsg);
+};
+
+// variant ts packet payload. 
+// PES packet or PSI table.
+// TSPayloadPAT: page 61.
+class TSPayload 
+{
+public:
+    /**
+    * the size of payload(payload plush the 1byte pointer_field).
+    */
+    int size;
+    int pointer_field_size;
+    
+	TSPidType type;
+    
+    /**
+    * 2.4.4.2 Semantics definition of fields in pointer syntax
+    */
+    u_int8_t pointer_field;
+    
+    TSPayloadReserved* reserved;
+    TSPayloadPAT* pat;
+    TSPayloadPMT* pmt;
+    TSPayloadPES* pes;
+    
+    /**
+    * 2.4.3.6 PES packet. page 49.
+    */
+    
+    TSPayload();
+    virtual ~TSPayload();;
+    void read_pointer_field(TSPacket* pkt, u_int8_t*& p);
+    int demux(TSContext* ctx, TSPacket* pkt, u_int8_t* start, u_int8_t* last, u_int8_t*& p, TSMessage*& pmsg);
+};
+
+
+/**
+* 2.4.4.3 Program association Table. page 61.
+*/
+class TSPayloadPAT 
+{
+public:
+    // 1B
+    u_int8_t table_id; //8bits
+    
+    // 2B
+    int8_t section_syntax_indicator; //1bit
+    int8_t const0_value; //1bit
+    // 2bits reserved. 
+    u_int16_t section_length; //12bits
+    
+    // 2B
+    u_int16_t transport_stream_id; //16bits
+    
+    // 1B
+    // 2bits reerverd.
+    int8_t version_number; //5bits
+    int8_t current_next_indicator; //1bit
+    
+    // 1B
+    u_int8_t section_number; //8bits
+    
+    // 1B
+    u_int8_t last_section_number; //8bits
+    
+    // multiple 4B program data.
+    // program_number 16bits
+    // reserved 2bits
+    // 13bits data: 0x1FFF
+    // if program_number program_map_PID 13bits
+    // else network_PID 13bytes.
+    int program_size;
+    int32_t* programs; //32bits
+    
+    // 4B
+    int32_t CRC_32; //32bits
+    
+    TSPayloadPAT();
+    virtual ~TSPayloadPAT();
+    int demux(TSContext* ctx, TSPacket* pkt, u_int8_t* start, u_int8_t* last, u_int8_t*& p, TSMessage*& pmsg);
+};
+
+class TSPMTESInfo
+{
+public:
+    // 1B
+    u_int8_t stream_type; //8bits
+    
+    // 2B
+    // 3bits reserved
+    int16_t elementary_PID; //13bits
+    
+    // 2B
+    // 4bits reserved
+    int16_t ES_info_length; //12bits
+    
+    char* ES_info; //[ES_info_length] bytes.
+    
+    TSPMTESInfo();
+    virtual ~TSPMTESInfo();
+};
+
+
+/**
+* 2.4.4.8 Program Map Table. page 64.
+*/
+class TSPayloadPMT
+{
+public:
+    // 1B
+    u_int8_t table_id; //8bits
+    
+    // 2B
+    int8_t section_syntax_indicator; //1bit
+    int8_t const0_value; //1bit
+    // 2bits reserved. 
+    u_int16_t section_length; //12bits
+    
+    // 2B
+    u_int16_t program_number; //16bits
+    
+    // 1B
+    // 2bits reerverd.
+    int8_t version_number; //5bits
+    int8_t current_next_indicator; //1bit
+    
+    // 1B
+    u_int8_t section_number; //8bits
+    
+    // 1B
+    u_int8_t last_section_number; //8bits
+    
+    // 2B
+    // 2bits reserved.
+    int16_t PCR_PID; //16bits
+    
+    // 2B
+    // 4bits reserved.
+    int16_t program_info_length; //12bits
+    char* program_info_desc; //[program_info_length]bytes
+    
+    // array of TSPMTESInfo.
+    std::vector<TSPMTESInfo*> ES_info; 
+    
+    // 4B
+    int32_t CRC_32; //32bits
+    
+    TSPayloadPMT();
+    virtual ~TSPayloadPMT();
+    TSPMTESInfo* at(int index);
+    int demux(TSContext* ctx, TSPacket* pkt, u_int8_t* start, u_int8_t* last, u_int8_t*& p, TSMessage*& pmsg);
+};
+
+/**
+* Table 2-18 – Stream_id assignments. page 52.
+*/
+enum TSPESStreamId
+{
+	PES_program_stream_map 		= 0b10111100, // 0xbc
+	PES_private_stream_1 		= 0b10111101, // 0xbd
+	PES_padding_stream			= 0b10111110, // 0xbe
+	PES_private_stream_2		= 0b10111111, // 0xbf
+	
+	// 110x xxxx
+	// ISO/IEC 13818-3 or ISO/IEC 11172-3 or ISO/IEC 13818-7 or ISO/IEC
+	// 14496-3 audio stream number x xxxx
+	// (stream_id>>5)&0x07 == PES_audio_prefix
+	PES_audio_prefix			= 0b110,
+	
+	// 1110 xxxx
+	// ITU-T Rec. H.262 | ISO/IEC 13818-2 or ISO/IEC 11172-2 or ISO/IEC
+	// 14496-2 video stream number xxxx
+	// (stream_id>>4)&0x0f == PES_audio_prefix
+	PES_video_prefix			= 0b1110,
+	
+	PES_ECM_stream				= 0b11110000, // 0xf0
+	PES_EMM_stream				= 0b11110001, // 0xf1
+	PES_DSMCC_stream			= 0b11110010, // 0xf2
+	PES_13522_stream			= 0b11110011, // 0xf3
+	PES_H_222_1_type_A			= 0b11110100, // 0xf4
+	PES_H_222_1_type_B			= 0b11110101, // 0xf5
+	PES_H_222_1_type_C			= 0b11110110, // 0xf6
+	PES_H_222_1_type_D			= 0b11110111, // 0xf7
+	PES_H_222_1_type_E			= 0b11111000, // 0xf8
+	PES_ancillary_stream		= 0b11111001, // 0xf9
+	PES_SL_packetized_stream	= 0b11111010, // 0xfa
+	PES_FlexMux_stream			= 0b11111011, // 0xfb
+	// reserved data stream
+	// 1111 1100 … 1111 1110
+	PES_program_stream_directory= 0b11111111, // 0xff
+};
+
+
+/**
+* 2.4.3.7 Semantic definition of fields in PES packet. page 49.
+*/
+class TSPayloadPES
+{
+public:
+    // 3B
+    int32_t packet_start_code_prefix; //24bits
+    // 1B
+    u_int8_t stream_id; //8bits
+    // 2B
+    u_int16_t PES_packet_length; //16bits
+
+	// 1B
+	// 2bits const '10'
+	int8_t PES_scrambling_control; //2bits
+	int8_t PES_priority; //1bit
+	int8_t data_alignment_indicator; //1bit
+	int8_t copyright; //1bit
+	int8_t original_or_copy; //1bit
+	
+	// 1B
+	int8_t PTS_DTS_flags; //2bits
+	int8_t ESCR_flag; //1bit
+	int8_t ES_rate_flag; //1bit
+	int8_t DSM_trick_mode_flag; //1bit
+	int8_t additional_copy_info_flag; //1bit
+	int8_t PES_CRC_flag; //1bit
+	int8_t PES_extension_flag; //1bit
+	
+	// 1B
+	u_int8_t PES_header_data_length; //8bits
+	
+	int64_t pts; // 33bits
+	int64_t dts; // 33bits
+	
+	int16_t ESCR_extension; //9bits
+	int64_t ESCR_base; //33bits
+	int32_t ES_rate; //22bits
+	
+	int8_t trick_mode_control; //3bits
+	int8_t trick_mode_value; //5bits
+	
+	int8_t additional_copy_info; //7bits
+	int16_t previous_PES_packet_CRC; //16bits
+	
+	int8_t PES_private_data_flag; //1bit
+	int8_t pack_header_field_flag; //1bit
+	int8_t program_packet_sequence_counter_flag; //1bit
+	int8_t P_STD_buffer_flag; //1bit
+	// reserved 3bits
+	int8_t PES_extension_flag_2; //1bit
+	
+	// 16B
+	char* PES_private_data; //128bits
+	
+	int8_t pack_field_length; //8bits
+	char* pack_field; //[pack_field_length] bytes
+				
+	int8_t program_packet_sequence_counter; //7bits
+	int8_t MPEG1_MPEG2_identifier; //1bit
+	int8_t original_stuff_length; //6bits
+				
+	int8_t P_STD_buffer_scale; //1bit
+	int16_t P_STD_buffer_size; //13bits
+	
+	int8_t PES_extension_field_length; //7bits
+	char* PES_extension_field; //[PES_extension_field_length] bytes
+	
+	int stuffing_size;
+	char* stuffing_byte;
+    
+    TSPayloadPES();
+    virtual ~TSPayloadPES();
+    int64_t decode_33bits_int(u_int8_t*& p, int64_t& temp);
+    int64_t decode_33bits_int(int64_t& temp);
+    int demux(TSContext* ctx, TSPacket* pkt, u_int8_t* start, u_int8_t* last, u_int8_t*& p, TSMessage*& pmsg);
+};
+
+class TSPayloadReserved 
+{
+public:
+    int size;
+    char* bytes;
+    
+    TSPayloadReserved();
+    virtual ~TSPayloadReserved();
+    int demux(TSContext* ctx, TSPacket* pkt, u_int8_t* start, u_int8_t* last, u_int8_t*& p, TSMessage*& pmsg);
+};
+
+/**
+* logic ts pid.
+*/
+struct TSPid
+{
+	TSPidType type;
+	// page 66.
+	TSStreamType stream_type;
+	// page 36
+	TSPidTable pid;
+	// page 36
+	u_int8_t continuity_counter;
+};
+
+/**
+* logic audio/video message
+*/
+class TSMessage
+{
+public:
+	// 2.4.3.2 Transport Stream packet layer. page 36
+	// the pid of PES packet.
+	TSPidTable pid;
+	
+	// the type of pid.
+	TSPidType type;
+	// the type of stream, codec type.
+	TSStreamType stream_type;
+	// page 36
+	u_int8_t continuity_counter;
+	
+	// 2.4.3.7 Semantic definition of fields in PES packet. page 49
+	// PES packet header size plus data size.
+    u_int16_t PES_packet_length; //16bits
+
+	// the stream id.
+	u_int8_t stream_id;
+	
+	// 2.4.3.7 Semantic definition of fields in PES packet. page 49.
+	int32_t packet_start_code_prefix;
+	
+	int64_t pts; // 33bits
+	int64_t dts; // 33bits
+    
+    // header size.
+    int packet_header_size;
+    
+    // the parsed packet size.
+    int parsed_packet_size;
+    
+    // total packet size.
+	int packet_data_size;
+	char* packet_data;
+	
+	TSMessage();
+	virtual ~TSMessage();
+	
+	void append(u_int8_t*& p, int size);
+	void detach(TSContext* ctx, TSMessage*& pmsg);
+	
+	bool is_video();
+};
+
+// ts context
+class TSContext
+{
+public:
+    /**
+    * consumed pids.
+    */
+    int pid_size;
+	TSPid* pids;
+	int64_t ts_packet_count;
+	std::map<TSPidTable, TSMessage*> msgs;
+    
+    TSContext();
+    virtual ~TSContext();
+    bool exists(TSPidTable pid);
+    TSPid* get(TSPidTable pid);
+    void push(TSPidTable pid, TSStreamType stream_type, TSPidType type, u_int8_t continuity_counter);
+    
+    TSMessage* get_msg(TSPidTable pid);
+    void detach(TSMessage* msg);
+};
+
+TSContext::TSContext()
+{
+    pid_size = 0;
+    ts_packet_count = 0;
+    pids = NULL;
+}
+
+TSContext::~TSContext()
+{
+    srs_freepa(pids);
+    
+    std::map<TSPidTable, TSMessage*>::iterator it;
+    for (it = msgs.begin(); it != msgs.end(); ++it) {
+        TSMessage* msg = it->second;
+        srs_freep(msg);
+    }
+    msgs.clear();
+}
+
+bool TSContext::exists(TSPidTable pid)
+{
+    for (int i = 0; i < pid_size; i++) {
+        if (pid == pids[i].pid) {
+            return true;
+        }
+    }
+    
+    return false;
+}
+
+TSPid* TSContext::get(TSPidTable pid)
+{
+    for (int i = 0; i < pid_size; i++) {
+        if (pid == pids[i].pid) {
+            return &pids[i];
+        }
+    }
+    
+    return NULL;
+}
+
+void TSContext::push(TSPidTable pid, TSStreamType stream_type, TSPidType type, u_int8_t continuity_counter)
+{
+	TSPid* p = get(pid);
+	
+    if (!p) {
+        p = new TSPid[pid_size + 1];
+		memcpy(p, pids, sizeof(TSPid) * pid_size);
+		
+		p[pid_size] = (TSPid){type, stream_type, pid, continuity_counter};
+		pid_size++;
+		
+		srs_freepa(pids);
+		pids = p;
+    }
+    
+    p->continuity_counter = continuity_counter;
+}
+
+TSMessage* TSContext::get_msg(TSPidTable pid)
+{
+	if (msgs[pid] == NULL) {
+		TSMessage* msg = new TSMessage();
+		msg->pid = pid;
+		msgs[pid] = msg;
+	}
+	
+	return msgs[pid];
+}
+
+void TSContext::detach(TSMessage* msg)
+{
+	msgs[msg->pid] = NULL;
+}
+
+TSMessage::TSMessage()
+{
+	pid = TSPidTablePAT;
+	type = TSPidTypeReserved;
+	stream_type = TSStreamTypeReserved;
+	stream_id = 0;
+	packet_start_code_prefix = 0;
+	pts = dts = 0;
+	PES_packet_length = 0;
+	packet_header_size = 0;
+	parsed_packet_size = 0;
+	packet_data_size = 0;
+	packet_data = NULL;
+}
+
+TSMessage::~TSMessage()
+{
+	srs_freepa(packet_data);
+}
+
+void TSMessage::append(u_int8_t*& p, int size)
+{
+	if (size <= 0) {
+		return;
+	}
+	
+	// for PES_packet_length is 0, the size is varient.
+	if (packet_data_size - parsed_packet_size < size) {
+		int realloc_size = size - (packet_data_size - parsed_packet_size);
+		packet_data = (char*)realloc(packet_data, packet_data_size + realloc_size);
+		
+		packet_data_size += realloc_size;
+	}
+	
+	memcpy(packet_data + parsed_packet_size, p, size);
+	p += size;
+	parsed_packet_size += size;
+}
+
+void TSMessage::detach(TSContext* ctx, TSMessage*& pmsg)
+{
+	if (parsed_packet_size >= packet_data_size) {
+		ctx->detach(this);
+		pmsg = this;
+	}
+}
+
+bool TSMessage::is_video()
+{
+	return type == TSPidTypeVideo;
+}
+
+TSAdaptionField::TSAdaptionField()
+{
+    adaption_field_length = 0;
+    discontinuity_indicator = 0;
+    random_access_indicator = 0;
+    elementary_stream_priority_indicator = 0;
+    PCR_flag = 0;
+    OPCR_flag = 0;
+    splicing_point_flag = 0;
+    transport_private_data_flag = 0;
+    adaptation_field_extension_flag = 0;
+    program_clock_reference_base = 0;
+    program_clock_reference_extension = 0;
+    original_program_clock_reference_base = 0;
+    original_program_clock_reference_extension = 0;
+    splice_countdown = 0;
+    transport_private_data_length = 0;
+    transport_private_data = NULL;
+    adaptation_field_extension_length = 0;
+    ltw_flag = 0;
+    piecewise_rate_flag = 0;
+    seamless_splice_flag = 0;
+    ltw_valid_flag = 0;
+    ltw_offset = 0;
+    piecewise_rate = 0;
+    splice_type = 0;
+    DTS_next_AU0 = 0;
+    marker_bit0 = 0;
+    DTS_next_AU1 = 0;
+    marker_bit1 = 0;
+    DTS_next_AU2 = 0;
+    marker_bit2 = 0;
+    af_ext_reserved = NULL;
+    af_reserved = NULL;
+    __field_size = 0;
+    pcr = 0;
+    original_pcr = 0;
+}
+
+TSAdaptionField::~TSAdaptionField()
+{
+    srs_freepa(transport_private_data);
+    srs_freepa(af_ext_reserved);
+    srs_freepa(af_reserved);
+}
+
+int TSAdaptionField::get_size()
+{
+    return __field_size;
+}
+
+int TSAdaptionField::demux(TSContext* ctx, TSPacket* pkt, u_int8_t* start, u_int8_t* last, u_int8_t*& p, TSMessage*& pmsg)
+{
+    int ret = 0;
+
+    adaption_field_length = *p++;
+    u_int8_t* pos_af = p;
+    __field_size = 1 + adaption_field_length;
+    
+    if (adaption_field_length <= 0) {
+        trace("ts+af empty af decoded.");
+        return ret;
+    }
+    
+    int8_t value = *p++;
+    
+    discontinuity_indicator              =   (value >> 7) & 0x01;
+    random_access_indicator              =   (value >> 6) & 0x01;
+    elementary_stream_priority_indicator =   (value >> 5) & 0x01;
+    PCR_flag                             =   (value >> 4) & 0x01;
+    OPCR_flag                            =   (value >> 3) & 0x01;
+    splicing_point_flag                  =   (value >> 2) & 0x01;
+    transport_private_data_flag          =   (value >> 1) & 0x01;
+    adaptation_field_extension_flag      =   (value >> 0) & 0x01;
+    
+    char* pp = NULL;
+    if (PCR_flag) {
+        pp = (char*)&program_clock_reference_base;
+        pp[5] = *p++;
+        pp[4] = *p++;
+        pp[3] = *p++;
+        pp[2] = *p++;
+        pp[1] = *p++;
+        pp[0] = *p++;
+        
+        program_clock_reference_extension = program_clock_reference_base & 0x1ff;
+        program_clock_reference_base = (program_clock_reference_base >> 15) & 0x1ffffffff;
+        
+        // high 9bits
+        pcr = program_clock_reference_extension;
+        pcr = (pcr << 33) & 0x3fe00000000;
+        // low 33bits
+        pcr |= program_clock_reference_base;
+    }
+    if (OPCR_flag) {
+        pp = (char*)&original_program_clock_reference_base;
+        pp[5] = *p++;
+        pp[4] = *p++;
+        pp[3] = *p++;
+        pp[2] = *p++;
+        pp[1] = *p++;
+        pp[0] = *p++;
+        
+        original_program_clock_reference_extension = original_program_clock_reference_base & 0x1ff;
+        original_program_clock_reference_base = (original_program_clock_reference_base >> 15) & 0x1ffffffff;
+        
+        // high 9bits
+        original_pcr = program_clock_reference_extension;
+        original_pcr = (original_pcr << 33) & 0x3fe00000000;
+        // low 33bits
+        original_pcr |= program_clock_reference_base;
+    }
+    if (splicing_point_flag) {
+        splice_countdown = *p++;
+    }
+    if (transport_private_data_flag) {
+        transport_private_data_length = *p++;
+        transport_private_data = new char[transport_private_data_length];
+        for (int i = 0; i < transport_private_data_length; i++) {
+            transport_private_data[i] = *p++;
+        }
+    }
+    if (adaptation_field_extension_flag) {
+        adaptation_field_extension_length = *p++;
+        u_int8_t* pos_af_ext = p;
+        
+        ltw_flag = *p++;
+        
+        piecewise_rate_flag = (ltw_flag >> 6) & 0x01;
+        seamless_splice_flag = (ltw_flag >> 5) & 0x01;
+        ltw_flag = (ltw_flag >> 7) & 0x01;
+        
+        if (ltw_flag) {
+            pp = (char*)&ltw_offset;
+            pp[1] = *p++;
+            pp[0] = *p++;
+            
+            ltw_valid_flag = (ltw_offset >> 15) &0x01;
+            ltw_offset &= 0x7FFF;
+        }
+        if (piecewise_rate_flag) {
+            pp = (char*)&piecewise_rate;
+            pp[2] = *p++;
+            pp[1] = *p++;
+            pp[0] = *p++;
+            
+            piecewise_rate &= 0x3FFFFF;
+        }
+        if (seamless_splice_flag) {
+            // 1B
+            marker_bit0 = *p++;
+            
+            splice_type = (marker_bit0 >> 4) & 0x0F;
+            DTS_next_AU0 = (marker_bit0 >> 1) & 0x07;
+            marker_bit0 &= 0x01;
+            
+            // 2B
+            pp = (char*)&DTS_next_AU1;
+            pp[1] = *p++;
+            pp[0] = *p++;
+            
+            marker_bit1 = DTS_next_AU1 & 0x01;
+            DTS_next_AU1 = (DTS_next_AU1 >> 1) & 0x7FFF;
+            
+            // 2B
+            pp = (char*)&DTS_next_AU2;
+            pp[1] = *p++;
+            pp[0] = *p++;
+            
+            marker_bit2 = DTS_next_AU2 & 0x01;
+            DTS_next_AU2 = (DTS_next_AU2 >> 1) & 0x7FFF;
+        }
+        
+        // af_ext_reserved
+        int ext_size = adaptation_field_extension_length - (p - pos_af_ext);
+        if (ext_size > 0) {
+            af_ext_reserved = new char[ext_size];
+            memcpy(af_ext_reserved, p, ext_size);
+            p += ext_size;
+        }
+    }
+    
+    // af_reserved
+    int af_size = adaption_field_length - (p - pos_af);
+    if (af_size > 0) {
+        af_reserved = new char[af_size];
+        memcpy(af_reserved, p, af_size);
+        p += af_size;
+    }
+    
+    trace("ts+af af flags parsed, discontinuity: %d random: %d priority: %d PCR: %d OPCR: %d slicing: %d private: %d extension: %d pcr: %"PRId64" opcr: %"PRId64"",
+        discontinuity_indicator, random_access_indicator, elementary_stream_priority_indicator, PCR_flag, OPCR_flag, splicing_point_flag,
+        transport_private_data_flag, adaptation_field_extension_flag, pcr, original_pcr);
+    
+    return ret;
+}
+
+TSPayloadReserved::TSPayloadReserved()
+{
+    size = 0;
+    bytes = NULL;
+}
+
+TSPayloadReserved::~TSPayloadReserved()
+{
+    srs_freepa(bytes);
+}
+
+int TSPayloadReserved::demux(TSContext* ctx, TSPacket* pkt, u_int8_t* start, u_int8_t* last, u_int8_t*& p, TSMessage*& pmsg)
+{
+    int ret = 0;
+    
+    size = pkt->payload->size - pkt->payload->pointer_field_size;
+
+    // not parsed bytes.
+    if (size > 0) {
+        bytes = new char[size];
+        memcpy(bytes, p, size);
+        p += size;
+    }
+
+    return ret;
+}
+
+TSPayloadPAT::TSPayloadPAT()
+{
+    table_id = 0;
+    section_syntax_indicator = 0;
+    const0_value = 0;
+    section_length = 0;
+    transport_stream_id = 0;
+    version_number = 0;
+    current_next_indicator = 0;
+    section_number = 0;
+    last_section_number = 0;
+    program_size = 0;
+    programs = NULL;
+    CRC_32 = 0;
+}
+
+TSPayloadPAT::~TSPayloadPAT()
+{
+    srs_freepa(programs);
+}
+
+int TSPayloadPAT::demux(TSContext* ctx, TSPacket* pkt, u_int8_t* start, u_int8_t* last, u_int8_t*& p, TSMessage*& pmsg)
+{
+    int ret = 0;
+    
+    table_id = *p++;
+    
+    char* pp = (char*)&section_length;
+    pp[1] = *p++;
+    pp[0] = *p++;
+    u_int8_t* pos = p;
+    
+    section_syntax_indicator = (section_length >> 15) & 0x01;
+    const0_value = (section_length >> 14) & 0x01;
+    section_length &= 0x0FFF;
+    
+    pp = (char*)&transport_stream_id;
+    pp[1] = *p++;
+    pp[0] = *p++;
+    
+    current_next_indicator = *p++;
+    version_number = (current_next_indicator >> 1) & 0x1F;
+    current_next_indicator &= 0x01;
+    
+    section_number = *p++;
+    last_section_number = *p++;
+    
+    // 4 is crc size.
+    int program_bytes = section_length - 4 - (p - pos);
+    program_size = program_bytes / 4;
+    if (program_size > 0) {
+        programs = new int32_t[program_size];
+        for (int i = 0; i < program_size; i++) {
+            pp = (char*)&programs[i];
+            pp[3] = *p++;
+            pp[2] = *p++;
+            pp[1] = *p++;
+            pp[0] = *p++;
+            
+            int16_t pid = programs[i] & 0x1FFF;
+            ctx->push((TSPidTable)pid, TSStreamTypeReserved, TSPidTypePMT, pkt->header->continuity_counter);
+        }
+    }
+    
+    pp = (char*)&CRC_32;
+    pp[3] = *p++;
+    pp[2] = *p++;
+    pp[1] = *p++;
+    pp[0] = *p++;
+    
+    return ret;
+}
+
+TSPMTESInfo::TSPMTESInfo()
+{
+    stream_type = 0;
+    elementary_PID = 0;
+    ES_info_length = 0;
+	ES_info = NULL;
+}
+
+TSPMTESInfo::~TSPMTESInfo()
+{
+	srs_freepa(ES_info);
+}
+
+TSPayloadPMT::TSPayloadPMT()
+{
+    table_id = 0;
+    section_syntax_indicator = 0;
+    const0_value = 0;
+    section_length = 0;
+    program_number = 0;
+    version_number = 0;
+    current_next_indicator = 0;
+    section_number = 0;
+    last_section_number = 0;
+    PCR_PID = 0;
+    program_info_length = 0;
+    program_info_desc = NULL;
+    CRC_32 = 0;
+}
+
+TSPayloadPMT::~TSPayloadPMT()
+{
+	srs_freepa(program_info_desc);
+	
+	for (std::vector<TSPMTESInfo*>::iterator it = ES_info.begin(); it != ES_info.end(); ++it) {
+		TSPMTESInfo* info = *it;
+		srs_freep(info);
+	}
+	ES_info.clear();
+}
+
+TSPMTESInfo* TSPayloadPMT::at(int index)
+{
+	return ES_info.at(index);
+}
+
+int TSPayloadPMT::demux(TSContext* ctx, TSPacket* pkt, u_int8_t* start, u_int8_t* last, u_int8_t*& p, TSMessage*& pmsg)
+{
+    int ret = 0;
+    
+    table_id = *p++;
+    
+    char* pp = (char*)&section_length;
+    pp[1] = *p++;
+    pp[0] = *p++;
+    u_int8_t* pos = p;
+    
+    section_syntax_indicator = (section_length >> 15) & 0x01;
+    const0_value = (section_length >> 14) & 0x01;
+    section_length &= 0x0FFF;
+    
+    pp = (char*)&program_number;
+    pp[1] = *p++;
+    pp[0] = *p++;
+    
+    current_next_indicator = *p++;
+    version_number = (current_next_indicator >> 1) & 0x1F;
+    current_next_indicator &= 0x01;
+    
+    section_number = *p++;
+    last_section_number = *p++;
+    
+    pp = (char*)&PCR_PID;
+    pp[1] = *p++;
+    pp[0] = *p++;
+    
+    PCR_PID &= 0x1FFF;
+    
+    pp = (char*)&program_info_length;
+    pp[1] = *p++;
+    pp[0] = *p++;
+    
+    program_info_length &= 0xFFF;
+    
+    if (program_info_length > 0) {
+	    program_info_desc = new char[program_info_length];
+	    memcpy(program_info_desc, p, program_info_length);
+	    p += program_info_length;
+    }
+    
+    // [section_length] - 4(CRC) - 9B - [program_info_length]
+    int ES_bytes = section_length - 4 - 9 - program_info_length;
+    while (ES_bytes > 0) {
+	    TSPMTESInfo* info = new TSPMTESInfo();
+	    
+	    info->stream_type = *p++;
+	    ES_bytes--;
+	    
+	    pp = (char*)&info->elementary_PID;
+	    pp[1] = *p++;
+	    pp[0] = *p++;
+	    ES_bytes -= 2;
+	    
+	    info->elementary_PID &= 0x1FFF;
+	    
+	    pp = (char*)&info->ES_info_length;
+	    pp[1] = *p++;
+	    pp[0] = *p++;
+	    ES_bytes -= 2;
+	    
+	    info->ES_info_length &= 0x0FFF;
+	    
+	    if (info->ES_info_length > 0) {
+	        info->ES_info = new char[info->ES_info_length];
+	        memcpy(info->ES_info, p, info->ES_info_length);
+	        
+	        p += info->ES_info_length;
+	        ES_bytes -= info->ES_info_length;
+	    }
+	    
+	    ES_info.push_back(info);
+		
+		if (info->stream_type == TSStreamTypeVideoH264) {
+			// TODO: support more video type.
+			ctx->push((TSPidTable)info->elementary_PID, (TSStreamType)info->stream_type, TSPidTypeVideo, pkt->header->continuity_counter);
+			trace("ts+pmt add pid: %d, type: H264 video", info->elementary_PID);
+		} else if (info->stream_type == TSStreamTypeAudioAAC) {
+			// TODO: support more audio type.
+			// see aac: 6.2 Audio Data Transport Stream, ADTS
+			ctx->push((TSPidTable)info->elementary_PID, (TSStreamType)info->stream_type, TSPidTypeAudio, pkt->header->continuity_counter);
+			trace("ts+pmt add pid: %d, type: AAC audio", info->elementary_PID);
+		} else {
+			trace("ts+pmt ignore the stream type: %d", info->stream_type);
+		}
+    }
+    
+    pp = (char*)&CRC_32;
+    pp[3] = *p++;
+    pp[2] = *p++;
+    pp[1] = *p++;
+    pp[0] = *p++;
+    
+    return ret;
+}
+
+TSPayloadPES::TSPayloadPES()
+{
+    packet_start_code_prefix = 0;
+    stream_id = 0;
+    PES_packet_length = 0;
+    PES_scrambling_control = 0;
+    PES_priority = 0;
+    data_alignment_indicator = 0;
+    copyright = 0;
+    original_or_copy = 0;
+    PTS_DTS_flags = 0;
+    ESCR_flag = 0;
+    ES_rate_flag = 0;
+    DSM_trick_mode_flag = 0;
+    additional_copy_info_flag = 0;
+    PES_CRC_flag = 0;
+    PES_extension_flag = 0;
+    PES_header_data_length = 0;
+    pts = 0;
+    dts = 0;
+    ESCR_extension = 0;
+    ESCR_base = 0;
+    ES_rate = 0;
+    trick_mode_control = 0;
+    trick_mode_value = 0;
+    additional_copy_info = 0;
+    previous_PES_packet_CRC = 0;
+    PES_private_data_flag = 0;
+    pack_header_field_flag = 0;
+    program_packet_sequence_counter_flag = 0;
+    P_STD_buffer_flag = 0;
+    PES_extension_flag_2 = 0;
+    PES_private_data = NULL;
+    pack_field_length = 0;
+    pack_field = NULL;
+    program_packet_sequence_counter = 0;
+    MPEG1_MPEG2_identifier = 0;
+    original_stuff_length = 0;
+    P_STD_buffer_scale = 0;
+    P_STD_buffer_size = 0;
+    PES_extension_field_length = 0;
+    PES_extension_field = NULL;
+    stuffing_size = 0;
+    stuffing_byte = NULL;
+}
+
+TSPayloadPES::~TSPayloadPES()
+{
+	srs_freepa(PES_private_data);
+	srs_freepa(pack_field);
+	srs_freepa(PES_extension_field);
+	srs_freepa(stuffing_byte);
+}
+
+int64_t TSPayloadPES::decode_33bits_int(u_int8_t*& p, int64_t& temp)
+{
+	char* pp = (char*)&temp;
+	pp[4] = *p++;
+	pp[3] = *p++;
+	pp[2] = *p++;
+	pp[1] = *p++;
+	pp[0] = *p++;
+	
+	return decode_33bits_int(temp);
+}
+
+int64_t TSPayloadPES::decode_33bits_int(int64_t& temp)
+{
+    int64_t ret = 0;
+	
+	// marker_bit 1bit
+	temp = temp >> 1;
+	// PTS [14..0] 15bits
+	ret |= temp & 0x3fff;
+	// marker_bit 1bit
+	temp = temp >> 1;
+	// PTS [29..15] 15bits, 15zero, 29-15+1one
+	ret |= temp & 0x3fff8000;
+	// marker_bit 1bit
+	temp = temp >> 1;
+	// PTS [32..30] 3bits
+	ret |= temp & 0x1c0000000;
+	
+	temp = temp >> 33;
+	
+	return ret;
+}
+
+int TSPayloadPES::demux(TSContext* ctx, TSPacket* pkt, u_int8_t* start, u_int8_t* last, u_int8_t*& p, TSMessage*& pmsg)
+{
+    int ret = 0;
+    
+    char* pp = (char*)&packet_start_code_prefix;
+    pp[2] = *p++;
+    pp[1] = *p++;
+    pp[0] = *p++;
+    
+    packet_start_code_prefix &= 0xFFFFFF;
+	if (packet_start_code_prefix != 0x01) {
+		trace("ts+pes decode unit start packet error, msg is empty.");
+		return -1;
+	}
+
+	stream_id = *p++;
+	
+	pp = (char*)&PES_packet_length;
+	pp[1] = *p++;
+	pp[0] = *p++;
+	u_int8_t* pos_packet = p;
+	
+	if (stream_id != PES_program_stream_map
+	    && stream_id != PES_padding_stream
+	    && stream_id != PES_private_stream_2
+	    && stream_id != PES_ECM_stream
+	    && stream_id != PES_EMM_stream
+	    && stream_id != PES_program_stream_directory
+	    && stream_id != PES_DSMCC_stream
+	    && stream_id != PES_H_222_1_type_E
+	) {
+		original_or_copy = *p++;
+		
+		//int8_t const2bits = (original_or_copy >> 6) & 0x03;
+		PES_scrambling_control = (original_or_copy >> 4) & 0x03;
+		PES_priority = (original_or_copy >> 3) & 0x01;
+		data_alignment_indicator = (original_or_copy >> 2) & 0x01;
+		copyright = (original_or_copy >> 1) & 0x01;
+		original_or_copy &= 0x01;
+		
+		PES_extension_flag = *p++;
+		
+		PTS_DTS_flags = (PES_extension_flag >> 6) & 0x03;
+		ESCR_flag = (PES_extension_flag >> 5) & 0x01;
+		ES_rate_flag = (PES_extension_flag >> 4) & 0x01;
+		DSM_trick_mode_flag = (PES_extension_flag >> 3) & 0x01;
+		additional_copy_info_flag = (PES_extension_flag >> 2) & 0x01;
+		PES_CRC_flag = (PES_extension_flag >> 1) & 0x01;
+		PES_extension_flag &= 0x01;
+		
+		PES_header_data_length = *p++;
+		u_int8_t* pos_header = p;
+
+		int64_t temp = 0;
+		if (PTS_DTS_flags == 0x2) {
+			pts = decode_33bits_int(p, temp);
+			// '0010' 4bits
+			//int8_t const4bits = temp & 0x0F;
+		}
+
+		if (PTS_DTS_flags == 0x3) {
+			pts = decode_33bits_int(p, temp);
+			// '0011' 4bits
+			//int8_t const4bits = temp & 0x0F;
+			
+			dts = decode_33bits_int(p, temp);
+			// '0001' 4bits
+			//int8_t const4bits = temp & 0x0F;
+		}
+		
+		if (ESCR_flag) {
+			pp = (char*)&temp;
+			pp[5] = *p++;
+			pp[4] = *p++;
+			pp[3] = *p++;
+			pp[2] = *p++;
+			pp[1] = *p++;
+			pp[0] = *p++;
+			
+			// marker_bit 1bit
+			temp = temp >> 1;
+			// ESCR_extension 9bits
+			ESCR_extension = temp & 0x1f;
+			temp = temp >> 9;
+			
+			ESCR_base = decode_33bits_int(temp);
+			
+			// reserved 2bits
+			//int8_t reserved2bits = temp & 0x03;
+		}
+		
+		if (ES_rate_flag) {
+			pp = (char*)&ES_rate;
+			pp[2] = *p++;
+			pp[1] = *p++;
+			pp[0] = *p++;
+			
+			ES_rate = ES_rate >> 1;
+			ES_rate &= 0x3FFFFF;
+		}
+
+		if (DSM_trick_mode_flag) {
+			trick_mode_control = *p++;
+
+			trick_mode_value = trick_mode_control & 0x1f;
+			trick_mode_control = (trick_mode_control >> 5) & 0x03;
+		}
+		
+		if (additional_copy_info_flag) {
+			additional_copy_info = *p++;
+			additional_copy_info &= 0x7f;
+		}
+		
+		if (PES_CRC_flag) {
+			pp = (char*)&previous_PES_packet_CRC;
+			pp[1] = *p++;
+			pp[0] = *p++;
+		}
+
+		if (PES_extension_flag) {
+			PES_extension_flag_2 = *p++;
+			
+			PES_private_data_flag = (PES_extension_flag_2 >> 7) & 0x01;
+			pack_header_field_flag = (PES_extension_flag_2 >> 6) & 0x01;
+			program_packet_sequence_counter_flag = (PES_extension_flag_2 >> 5) & 0x01;
+			P_STD_buffer_flag = (PES_extension_flag_2 >> 4) & 0x01;
+			PES_extension_flag_2 &= PES_extension_flag_2 & 0x01;
+			
+			if (PES_private_data_flag) {
+				PES_private_data = new char[16];
+				memcpy(PES_private_data, p, 16);
+				p += 16;
+			}
+			
+			if (pack_header_field_flag) {
+				pack_field_length = *p++;
+				if (pack_field_length > 0) {
+					pack_field = new char[pack_field_length];
+					memcpy(pack_field, p, pack_field_length);
+					p += pack_field_length;
+				}
+			}
+			
+			if (program_packet_sequence_counter_flag) {
+				program_packet_sequence_counter = *p++;
+				program_packet_sequence_counter &= 0x7f;
+				
+				original_stuff_length = *p++;
+				MPEG1_MPEG2_identifier = (original_stuff_length >> 6) & 0x01;
+				original_stuff_length &= 0x3f;
+			}
+			
+			if (P_STD_buffer_flag) {
+				pp = (char*)&P_STD_buffer_size;
+				pp[1] = *p++;
+				pp[0] = *p++;
+				
+				// '01'
+				//int8_t const2bits = (P_STD_buffer_scale >>14) & 0x03;
+
+				P_STD_buffer_scale = (P_STD_buffer_scale >>13) & 0x01;
+				P_STD_buffer_size &= 0x1FFF;
+			}
+			
+			if (PES_extension_flag_2) {
+				PES_extension_field_length = *p++;
+				PES_extension_field_length &= 0x07;
+				
+				if (PES_extension_field_length > 0) {
+					PES_extension_field = new char[PES_extension_field_length];
+					memcpy(PES_extension_field, p, PES_extension_field_length);
+					p += PES_extension_field_length;
+				}
+			}
+		}
+		
+		// stuffing_byte
+		int stuffing_size = PES_header_data_length - (p - pos_header);
+		if (stuffing_size > 0) {
+			stuffing_byte = new char[stuffing_size];
+			memcpy(stuffing_byte, p, stuffing_size);
+			p += stuffing_size;
+		}
+		
+		// get the pid.
+		TSPid* pid = ctx->get(pkt->header->pid);
+		if (!pid) {
+			trace("ts+pes pid: %d type is invalid.", pkt->header->pid);
+		}
+		
+		// get the message to build from the chunks(PES packets).
+		TSMessage* msg = ctx->get_msg(pid->pid);
+
+		msg->type = pid->type;
+		msg->stream_type = pid->stream_type;
+		msg->continuity_counter = pid->continuity_counter;
+		msg->stream_id = stream_id;
+		msg->packet_start_code_prefix = packet_start_code_prefix;
+		msg->dts = dts;
+		msg->pts = pts;
+		
+		// PES_packet_data_byte, page58.
+		// the packet size contains the header size.
+		// The number of PES_packet_data_bytes, N, is specified by the 
+		// PES_packet_length field. N shall be equal to the value 
+		// indicated in the PES_packet_length minus the number of bytes 
+		// between the last byte of the PES_packet_length field and the 
+		// first PES_packet_data_byte.
+		msg->PES_packet_length = PES_packet_length;
+		msg->packet_header_size = p - pos_packet;
+		msg->packet_data_size = PES_packet_length - msg->packet_header_size;
+		
+		/**
+		* when actual packet length > 0xffff(65535),
+		* which exceed the max u_int16_t packet length,
+		* use 0 packet length, the next unit start indicates the end of packet.
+		*/
+		if (PES_packet_length == 0) {
+			msg->packet_data_size = last - p - msg->packet_header_size;
+		}
+		
+		if (msg->packet_data_size > 0) {
+			msg->packet_data = new char[msg->packet_data_size];
+		}
+		
+		// PES_packet_data_byte
+		int size = srs_min(msg->packet_data_size, last - p);
+		if (size > 0) {
+			msg->append(p, size);
+		}
+		
+		if (PES_packet_length > 0) {
+			msg->detach(ctx, pmsg);
+		}
+	
+		trace("ts+pes stream_id: %d size: %d pts: %"PRId64" dts: %"PRId64" total: %d header: %d packet_size: %d parsed_size: %d",
+			stream_id, PES_packet_length, pts, dts, msg->PES_packet_length, msg->packet_header_size, msg->packet_data_size, msg->parsed_packet_size);
+	} else if (stream_id == PES_program_stream_map
+		|| stream_id == PES_private_stream_2
+		|| stream_id == PES_ECM_stream
+		|| stream_id == PES_EMM_stream
+		|| stream_id == PES_program_stream_directory
+		|| stream_id == PES_DSMCC_stream
+		|| stream_id == PES_H_222_1_type_E
+	) {
+		// for (i = 0; i < PES_packet_length; i++) {
+		// 		PES_packet_data_byte
+		// }
+	} else if (stream_id != PES_padding_stream) {
+		// for (i = 0; i < PES_packet_length; i++) {
+		// 		padding_byte
+		// }
+	}
+    
+    return ret;
+}
+
+/**
+* 2.4.3.6 PES packet. page 49.
+*/
+
+TSPayload::TSPayload()
+{
+    size = 0;
+    pointer_field_size = 0;
+    type = TSPidTypeReserved;
+    pointer_field = 0;
+    reserved = NULL;
+    pat = NULL;
+    pmt = NULL;
+    pes = NULL;
+    
+}
+
+TSPayload::~TSPayload()
+{
+    srs_freep(reserved);
+    srs_freep(pat);
+    srs_freep(pmt);
+    srs_freep(pes);
+}
+
+void TSPayload::read_pointer_field(TSPacket* pkt, u_int8_t*& p)
+{
+    if (pkt->header->payload_unit_start_indicator) {
+        pointer_field = *p++;
+        pointer_field_size = 1;
+    }
+}
+
+int TSPayload::demux(TSContext* ctx, TSPacket* pkt, u_int8_t* start, u_int8_t* last, u_int8_t*& p, TSMessage*& pmsg)
+{
+    int ret = 0;
+    
+    if (pkt->header->pid == TSPidTablePAT) {
+        read_pointer_field(pkt, p);
+        
+        type = TSPidTypePAT;
+        pat = new TSPayloadPAT();
+        return pat->demux(ctx, pkt, start, last, p, pmsg);
+    }
+    
+    TSPid* pid = ctx->get(pkt->header->pid);
+    if (pid && pid->type == TSPidTypePMT) {
+        read_pointer_field(pkt, p);
+        
+        type = pid->type;
+        pmt = new TSPayloadPMT();
+        return pmt->demux(ctx, pkt, start, last, p, pmsg);
+    }
+    if (pid && (pid->type == TSPidTypeVideo || pid->type == TSPidTypeAudio)) {
+	    TSMessage* msg = ctx->get_msg(pkt->header->pid);
+	    
+        // flush previous PES_packet_length(0) packets.
+        if (msg->packet_start_code_prefix == 0x01 
+            && pkt->header->payload_unit_start_indicator == 1
+        	&& msg->PES_packet_length == 0
+        ) {
+            msg->detach(ctx, pmsg);
+            // reparse current message
+            p = start;
+            return ret;
+        }
+        
+		// parse continous packet.
+	    if (!pkt->header->payload_unit_start_indicator) {
+			if (msg->packet_start_code_prefix != 0x01) {
+				trace("ts+pes decode continous packet error, msg is empty.");
+				return -1;
+			}
+			msg->append(p, last - p);
+			
+			// for PES_packet_length is 0, donot attach it.
+			if (msg->PES_packet_length > 0) {
+				msg->detach(ctx, pmsg);
+			}
+			return ret;
+	    }
+	    
+        type = pid->type;
+        pes = new TSPayloadPES();
+        return pes->demux(ctx, pkt, start, last, p, pmsg);
+    }
+    
+    // not parsed bytes.
+    type = TSPidTypeReserved;
+    reserved = new TSPayloadReserved();
+    if ((ret = reserved->demux(ctx, pkt, start, last, p, pmsg)) != 0) {
+        return ret;
+    }
+    
+    return ret;
+}
+
+TSPacket::TSPacket()
+{
+    header = new TSHeader();
+    adaption_field = new TSAdaptionField();
+    payload = new TSPayload();
+}
+
+TSPacket::~TSPacket()
+{
+    srs_freep(header);
+    srs_freep(adaption_field);
+    srs_freep(payload);
+}
+
+int TSPacket::demux(TSContext* ctx, u_int8_t* start, u_int8_t* last, u_int8_t*& p, TSMessage*& pmsg)
+{
+    int ret = 0;
+    
+    if ((ret = header->demux(ctx, this, start, last, p, pmsg))  != 0) {
+        return ret;
+    }
+
+    if (header->adaption_field_control == TSAdaptionTypeAdaptionOnly || header->adaption_field_control == TSAdaptionTypeBoth) {
+        if ((ret = adaption_field->demux(ctx, this, start, last, p, pmsg)) != 0) {
+            trace("ts+header af(adaption field) decode error. ret=%d", ret);
+            return ret;
+        }
+        trace("ts+header af(adaption field) decoded.");
+    }
+    
+    // calc the user defined data size for payload.
+    payload->size = TS_PACKET_SIZE - header->get_size() - adaption_field->get_size();
+    
+    if (header->adaption_field_control == TSAdaptionTypePayloadOnly || header->adaption_field_control == TSAdaptionTypeBoth) {
+	    // parse new packet.
+        if ((ret = payload->demux(ctx, this, start, last, p, pmsg)) != 0) {
+            trace("ts+header payload decode error. ret=%d", ret);
+            return ret;
+        }
+        trace("ts+header payload decoded.");
+    }
+    
+    ctx->ts_packet_count++;
+    trace("ts+header parsed %"PRId64" packets finished. parsed: %d left: %d header: %d payload: %d(%d+%d)", 
+        ctx->ts_packet_count, (int)(p - start), (int)(last - p), header->get_size(), payload->size, payload->pointer_field_size, 
+        payload->size - payload->pointer_field_size);
+    
+    return finish();
+}
+
+int TSPacket::finish()
+{
+    return 0;
+}
+    
+TSHeader::TSHeader()
+{
+    sync_byte = 0;
+    transport_error_indicator = 0;
+    payload_unit_start_indicator = 0;
+    transport_priority = 0;
+    pid = TSPidTablePAT;
+    transport_scrambling_control = 0;
+    adaption_field_control = TSAdaptionTypeReserved;
+    continuity_counter = 0;
+}
+
+TSHeader::~TSHeader()
+{
+}
+
+int TSHeader::get_size()
+{
+    return 4;
+}
+
+int TSHeader::demux(TSContext* ctx, TSPacket* pkt, u_int8_t* start, u_int8_t* last, u_int8_t*& p, TSMessage*& pmsg)
+{
+    int ret = 0;
+
+    // ts packet header.
+    sync_byte = *p++;
+    if (sync_byte != 0x47) {
+        trace("ts+sync_bytes invalid sync_bytes: %#x, expect is 0x47", sync_byte);
+        return -1;
+    }
+    
+    int16_t _pid = 0;
+    char* pp = (char*)&_pid;
+    pp[1] = *p++;
+    pp[0] = *p++;
+    
+    transport_error_indicator = (_pid >> 15) & 0x01;
+    payload_unit_start_indicator = (_pid >> 14) & 0x01;
+    transport_priority = (_pid >> 13) & 0x01;
+    _pid &= 0x1FFF;
+    
+    pid = (TSPidTable)_pid;
+    
+    continuity_counter = *p++;
+    
+    transport_scrambling_control = (continuity_counter >> 6) & 0x03;
+    int8_t _adaption_field_control = (continuity_counter >> 4) & 0x03;
+    adaption_field_control = (TSAdaptionType)_adaption_field_control;
+    continuity_counter &= 0x0F;
+    
+    ctx->push(pid, TSStreamTypeReserved, TSPidTypePAT, continuity_counter);
+    
+    trace("ts+header sync: %#x error: %d unit_start: %d priotiry: %d pid: %d scrambling: %d adaption: %d counter: %d",
+        sync_byte, transport_error_indicator, payload_unit_start_indicator, transport_priority, pid,
+        transport_scrambling_control, adaption_field_control, continuity_counter);
+        
+    return ret;
+}
+
+/**
+* Annex B Byte stream format, in page 211.
+*/
+class TSH264Codec
+{
+public:
+	u_int8_t* raw_data;
+	int size;
+	
+	TSH264Codec()
+	{
+		size = 0;
+		raw_data = NULL;
+	}
+	
+	u_int8_t at(int index)
+	{
+		if (index >= size) {
+			return 0;
+		}
+		return raw_data[index];
+	}
+	
+	int parse(TSMessage* msg, char* last, char*& p)
+	{
+		int ret = 0;
+		
+		srs_assert(p);
+		
+		while (next_start_code_prefix(p) != 0x000001) {
+			char ch = *p++;
+			if (ch != 0x00) {
+				trace("ts+h264 parse msg failed, "
+					"expect 0x00 before start-code. actual is: %#x", (u_int8_t)ch);
+				return -1;
+			}
+		}
+		
+		if (p >= last) {
+			trace("ts+h264 parse msg finished, no start-code.");
+			return ret;
+		}
+		
+		// start_code_prefix_one_3bytes /* equal to 0x000001 */
+		p += 3;
+		
+		if (p < last) {
+			raw_data = (u_int8_t*)p;
+		}
+		while (p < last - 3) {
+			if (match_start_code_prefix(p)) {
+				break;
+			}
+			p++;
+		}
+		
+		if (raw_data) {
+			size = (u_int8_t*)p - raw_data;
+			if (p == last - 3) {
+				size = (u_int8_t*)last - raw_data;
+				p = last;
+			}
+		}
+		
+		trace("ts+h264 parse msg finished");
+		return ret;
+	}
+	
+	bool match_start_code_prefix(char*p)
+	{
+		return p[0] == 0x00 && p[1] == 0x00 && (p[2] == 0x00 || p[2] == 0x01);
+	}
+	
+	int32_t next_start_code_prefix(char* p)
+	{
+		int32_t value = 0;
+		char* pp = (char*)&value;
+		
+		pp[2] = p[0];
+		pp[1] = p[1];
+		pp[0] = p[2];
+
+		return value;
+	}
+};
+
+/**
+* Table 35 – Sampling frequency dependent on
+* sampling_frequency_index. in page 46.
+*/
+enum TSAacSampleFrequency
+{
+	TSAacSampleFrequency96000 		= 0x00,
+	TSAacSampleFrequency88200 		= 0x01,
+	TSAacSampleFrequency64000 		= 0x02,
+	TSAacSampleFrequency48000 		= 0x03,
+	TSAacSampleFrequency44100 		= 0x04,
+	TSAacSampleFrequency32000 		= 0x05,
+	TSAacSampleFrequency24000 		= 0x06,
+	TSAacSampleFrequency22050 		= 0x07,
+	TSAacSampleFrequency16000 		= 0x08,
+	TSAacSampleFrequency12000 		= 0x09,
+	TSAacSampleFrequency11025 		= 0x0a,
+	TSAacSampleFrequency8000  		= 0x0b,
+	TSAacSampleFrequencyReserved0 	= 0x0c,
+	TSAacSampleFrequencyReserved1 	= 0x0d,
+	TSAacSampleFrequencyReserved2 	= 0x0e,
+	TSAacSampleFrequencyReserved3 	= 0x0f,
+};
+
+/**
+* 6.2 Audio Data Transport Stream, ADTS, in page 26.
+*/
+class TSAacAdts
+{
+public:
+	// adts_fixed_header
+	// 2B, 16bits
+	int16_t syncword; //12bits
+	int8_t ID; //1bit
+	int8_t layer; //2bits
+	int8_t protection_absent; //1bit
+	// 12bits
+	int8_t profile; //2bit
+	TSAacSampleFrequency sampling_frequency_index; //4bits
+	int8_t private_bit; //1bit
+	int8_t channel_configuration; //3bits
+	int8_t original_or_copy; //1bit
+	int8_t home; //1bit
+	
+	// adts_variable_header
+	// 28bits
+	int8_t copyright_identification_bit; //1bit
+	int8_t copyright_identification_start; //1bit
+	int16_t frame_length; //13bits
+	int16_t adts_buffer_fullness; //11bits
+	int8_t number_of_raw_data_blocks_in_frame; //2bits
+	
+	u_int8_t* raw_data;
+	int size;
+	
+	TSAacAdts()
+	{
+		syncword = 0;
+		ID = 0;
+		layer = 0;
+		protection_absent = 0;
+		profile = 0;
+		sampling_frequency_index = TSAacSampleFrequencyReserved0;
+		private_bit = 0;
+		channel_configuration = 0;
+		original_or_copy = 0;
+		home = 0;
+		copyright_identification_bit = 0;
+		copyright_identification_start = 0;
+		frame_length = 0;
+		adts_buffer_fullness = 0;
+		number_of_raw_data_blocks_in_frame = 0;
+		
+		size = 0;
+		raw_data = NULL;
+	}
+	
+	u_int8_t at(int index)
+	{
+		if (index >= size) {
+			return 0;
+		}
+		return raw_data[index];
+	}
+	
+	int parse(TSMessage* msg, char*& p)
+	{
+		int ret = 0;
+		
+		srs_assert(p);
+		
+		char* start = p;
+		
+		// adts_fixed_header
+		char* pp = (char*)&syncword;
+		pp[1] = *p++;
+		pp[0] = *p++;
+		
+		protection_absent = syncword & 0x01;
+		layer = (syncword >> 1) & 0x03;
+		ID = (syncword >> 3) & 0x01;
+		syncword = (syncword >> 4) & 0x0FFF;
+
+		// adts_variable_header
+		int64_t temp = 0;
+		pp = (char*)&temp;
+		pp[4] = *p++;
+		pp[3] = *p++;
+		pp[2] = *p++;
+		pp[1] = *p++;
+		pp[0] = *p++;
+		
+		number_of_raw_data_blocks_in_frame = temp & 0x03;
+		temp = temp >> 2;
+
+		adts_buffer_fullness = temp & 0x7FF;
+		temp = temp >> 11;
+
+		frame_length = temp & 0x1FFF;
+		temp = temp >> 13;
+		
+		copyright_identification_start = temp & 0x01;
+		temp = temp >> 1;
+		
+		copyright_identification_bit = temp & 0x01;
+		temp = temp >> 1;
+		
+		// adts_fixed_header
+		home = temp & 0x01;
+		temp = temp >> 1;
+		
+		original_or_copy = temp & 0x01;
+		temp = temp >> 1;
+		
+		channel_configuration = temp & 0x07;
+		temp = temp >> 3;
+		
+		private_bit = temp & 0x01;
+		temp = temp >> 1;
+		
+		sampling_frequency_index = (TSAacSampleFrequency)(temp & 0x0F);
+		temp = temp >> 4;
+		
+		profile = temp & 0x03;
+		temp = temp >> 2;
+
+		if (!number_of_raw_data_blocks_in_frame) {
+			// adts_error_check
+			if (!protection_absent) {
+				// crc_check
+				trace("ts+aac TODO: crc_check.");
+			}
+			// raw_data_block
+			raw_data = (u_int8_t*)p;
+			size = frame_length - (p - start);
+			p += size;
+		} else {
+			trace("ts+aac TODO: parse multiple blocks.");
+		}
+		
+		return ret;
+	}
+};
+
+class AacMuxer
+{
+public:
+	int fd;
+	const char* file;
+
+	AacMuxer()
+	{
+		file = NULL;
+		fd = 0;
+	}
+	
+	virtual ~AacMuxer()
+	{
+		if (fd > 0) {
+			close(fd);
+		}
+	}
+
+	int open(const char* _file)
+	{
+		file = _file;
+		if ((fd = ::open(file, O_CREAT|O_WRONLY|O_TRUNC, 
+			S_IRUSR|S_IWUSR|S_IRGRP|S_IWGRP|S_IROTH)) < 0 
+		) {
+			return -1;
+		}
+		
+		return 0;
+	}
+
+	int write_audio(char* data, int size)
+	{
+		if (size > 0 && write(fd, data, size) != size) {
+			return -1;
+		}
+		
+		return 0;
+	}
+
+	int write_video(char* data, int size)
+	{
+		return 0;
+	}
+};
+
+int consume(TSMessage* msg, AacMuxer* aac_muxer)
+{
+	int ret = 0;
+	
+	char* p = msg->packet_data;
+	if (!p) {
+		trace("ts+aac+h264 ignore empty message.");
+		return ret;
+	}
+	
+	char* last = msg->packet_data + msg->packet_data_size;
+        
+    if (!msg->is_video()) {
+	    // write AAC raw audio.
+	    if (aac_muxer && (ret = aac_muxer->write_audio((char*)msg->packet_data, msg->packet_data_size)) != 0) {
+	        return ret;
+	    }
+	    
+	    // parse AAC audio.
+	    int64_t dts = -1;
+		while (p < last) {
+		    TSAacAdts aac;
+		    if ((ret = aac.parse(msg, p)) != 0) {
+		        return ret;
+		    }
+		    trace("ts+aac audio raw data parsed, size: %d, 0x%02x 0x%02x 0x%02x 0x%02x",
+		    	aac.size, aac.at(0), aac.at(1), aac.at(2), aac.at(3));
+			
+			if (dts == -1) {
+				dts = (msg->dts == 0)? msg->pts : msg->dts;
+			} else {
+				// see ffmpeg: avpriv_aac_parse_header
+				// rdb = get_bits(gbc, 2);  /* number_of_raw_data_blocks_in_frame */
+				// hdr->samples  = (rdb + 1) * 1024;
+				int samples = (aac.number_of_raw_data_blocks_in_frame + 1) * 1024;
+				static int sample_rates[] = {
+					96000, 88200, 64000, 48000, 44100, 32000,
+					24000, 22050, 16000, 12000, 11025, 8000, 
+					1, 1, 1, 1
+				};
+				int sample_rate = sample_rates[aac.sampling_frequency_index];
+				
+				dts += samples * 90000 / sample_rate;
+			}
+			
+			trace("ts+aac+h264+data %s pts:%"PRId64" dts:%"PRId64" size: %d",
+				(msg->type == TSPidTypeVideo)? "video":"audio", dts, dts, aac.frame_length);
+				
+		    // TODO: process audio.
+		}
+    } else { 	
+		trace("ts+aac+h264+data %s pts:%"PRId64" dts:%"PRId64" size: %d",
+			(msg->type == TSPidTypeVideo)? "video":"audio", msg->pts, 
+			(msg->dts == 0)? msg->pts : msg->dts, msg->packet_data_size);
+		   
+        // parse H264 video.
+		while (p < last) {
+			TSH264Codec h264;
+		    if ((ret = h264.parse(msg, last, p)) != 0) {
+		        return ret;
+		    }
+		    trace("ts+h264 video raw data parsed, size: %d, 0x%02x 0x%02x 0x%02x 0x%02x",
+		    	h264.size, h264.at(0), h264.at(1), h264.at(2), h264.at(3));
+			
+		    // TODO: process video.
+		}
+    }
+    
+	return ret;
+}
+
+int main(int argc, char** argv)
+{
+    const char* file = "livestream-1347.ts";
+    const char* output_aac_file = "output.aac";
+    if (argc > 2) {
+        file = argv[1];
+        output_aac_file = argv[2];
+    }
+    
+    int fd = open(file, O_RDONLY);
+    AacMuxer aac_muxer;
+    
+    int ret = 0;
+    if ((ret = aac_muxer.open(output_aac_file)) != 0) {
+        trace("aac_muxer+open open flv file failed.");
+        return ret;
+    }
+    
+    trace("demuxer+read packet count offset T+0  T+1  T+2  T+3  T+x T+L2 T+L1 T+L0");
+    
+    TSContext ctx;
+    for (int i = 0, offset = 0; ; i++) {
+        u_int8_t ts_packet[TS_PACKET_SIZE];
+        memset(ts_packet, 0, sizeof(ts_packet));
+        
+        int nread = read(fd, ts_packet, sizeof(ts_packet));
+        if (nread == 0) {
+            trace("demuxer+read got EOF, read completed, offset: %07d.", offset);
+            break;
+        }
+        if (nread != TS_PACKET_SIZE) {
+            trace("demuxer+read error to read ts packet. nread=%d", nread);
+            break;
+        }
+        trace("demuxer+read packet %04d %07d 0x%02x 0x%02x 0x%02x 0x%02x ... 0x%02x 0x%02x 0x%02x", 
+            i, offset, ts_packet[0], ts_packet[1], ts_packet[2], ts_packet[3], 
+            ts_packet[TS_PACKET_SIZE - 3], ts_packet[TS_PACKET_SIZE - 2], ts_packet[TS_PACKET_SIZE - 1]);
+        
+        u_int8_t* p = ts_packet;
+        u_int8_t* start = ts_packet;
+        u_int8_t* last = ts_packet + TS_PACKET_SIZE;
+        
+        // maybe need to parse multiple times for the PES_packet_length(0) packets.
+        while (p == start) {
+	        TSPacket pkt;
+	        TSMessage* msg = NULL;
+	        if ((ret = pkt.demux(&ctx, start, last, p, msg)) != 0) {
+	            trace("demuxer+read decode ts packet error. ret=%d", ret);
+	            return ret;
+	        }
+	        
+	        offset += nread;
+	        if (!msg) {
+	            continue;
+	        }
+	        
+	        if ((ret = consume(msg, &aac_muxer)) != 0) {
+	            trace("demuxer+consume parse and consume message failed. ret=%d", ret);
+	            break;
+	        }
+	        
+	        srs_freep(msg);
+        }
+    }
+    
+    close(fd);
+    return ret;
+}
+