+/*
+ * jTsSplitter - java based mpeg2ts splitter.
+ * Copyright (C) 2009-2010 Yukikaze
+ */
package jtssplitter;
import java.util.ArrayList;
import java.util.Arrays;
-import java.util.zip.CRC32;
import jtssplitter.data.PATData;
import jtssplitter.data.PMTData;
import jtssplitter.data.Descriptor;
import jtssplitter.data.EITData;
-import jtssplitter.data.Video_stream_descriptor;
-/*
- * To change this template, choose Tools | Templates
- * and open the template in the editor.
- */
+import java.io.ByteArrayOutputStream;
/**
*
*/
public class Mpeg2TSPacket {
//TSのヘッダーを格納する
+
public String header;
public String payload;
public String adaptation;
- public byte[] bPAT_payload=null;
+ public byte[] header_byte;
+ public byte[] payload_byte;
+ public byte[] adaptation_byte;
+ public byte[] bPAT_payload = null;
//private ArrayList<TsDate> date=new ArrayList<TsDate>();
//date.add(new TsDate("Starter"))
public int type;//
public Mpeg2TSPacket() {
}
- public int getPIDFirst(byte[] ts){
- byte[] b=new byte[2];
- b[0]=ts[1];
- b[1]=ts[2];
- //String s=byte2String2(b);
- //s=s.substring(3,16);
-
- return Integer.parseInt(byte2String2(b).substring(3,16),2);
+
+ public int getPIDFirst_byte(byte[] ts) {
+ calc cal = new calc();
+ byte[] b = new byte[2];
+ b[0] = ts[1];
+ b[1] = ts[2];
+ return cal.byte2int(b, 3, 13);
+ //return cal.byte2int(ts,11,13);
}
- public void readTS(byte[] ts) {
+
+ public void readTS_byte(byte[] ts) {
/**
* 188バイトのtsから読み出したbyteを与える
*/
+ calc cal = new calc();
String tsbyte = byte2String2(ts);
+ boolean begin_payload_unit = cal.byte2int(ts, 9, 1) == 1;
//header = tsbyte.substring(0, 31);
payload = tsbyte.substring(32);
//starter = TSString2Int(tsbyte, 0, 8);
//transporterror = TSString2Int(tsbyte, 8, 1);
//payloadstart = TSString2Int(tsbyte, 9, 1);
//transport_priority = TSString2Int(tsbyte, 10, 1);
- PID = TSString2Int(tsbyte, 11, 13);
- adaptation_field = TSString2Int(tsbyte, 26, 2);
+ //PID = TSString2Int(tsbyte, 11, 13);
+ PID = cal.byte2int(ts, 11, 13);
+ adaptation_field = cal.byte2int(ts, 26, 2);
//continuity_counter = TSString2Int(tsbyte, 28, 4);
payload = "";
if (PID != 8191) {
if (adaptation_field == 1) {
- pointer_field = TSString2Int(tsbyte, 32, 8);
- payload = tsbyte.substring(40);
+ if (begin_payload_unit) {
+ pointer_field = cal.byte2int(ts, 32, 8);
+ if ((ts.length - 5 - pointer_field) < (5 + pointer_field)) {
+ payload_byte = null;
+ } else {
+ payload_byte = cal.byte2subbyte(ts, 5 + pointer_field, ts.length - 5 - pointer_field);
+ }
+ } else {
+ payload_byte = cal.byte2subbyte(ts, 4, ts.length - 4);
+ }
} else if (adaptation_field == 3) {
- adaptation_length = TSString2Int(tsbyte, 32, 8);
- if ((adaptation_length < 184)&((tsbyte.length()-adaptation_length*8)>48)) {
+ adaptation_length = cal.byte2int(ts, 32, 8);
+ if ((adaptation_length < 184) & ((ts.length * 8 - adaptation_length * 8) > 48)) {
adaptation_length = adaptation_length * 8;
}
- adaptation = tsbyte.substring(32, 40 + adaptation_length);
- pointer_field = TSString2Int(tsbyte, 40 + adaptation_length, 8);
- payload = tsbyte.substring(48 + adaptation_length);
+ adaptation_byte = cal.byte2subbyte(ts, 4, 1 + adaptation_length / 8);
+ if (begin_payload_unit) {
+ pointer_field = cal.byte2int(ts, 40 + adaptation_length, 8);
+ if ((ts.length - 6 - (adaptation_length / 8) - pointer_field) < (6 + (adaptation_length / 8) + pointer_field)) {
+ payload_byte = null;
+ } else {
+ payload_byte = cal.byte2subbyte(ts, 6 + (adaptation_length / 8) + pointer_field, ts.length - 6 - (adaptation_length / 8) - pointer_field);
+ }
+ } else {
+ payload_byte = cal.byte2subbyte(ts, 5 + adaptation_length / 8, ts.length - 5 - adaptation_length / 8);
+ }
+ } else {
+ payload_byte = null;
}
}
- if (PID == 0) {
- pat_list_now =readPAT(payload);
- pat_list_all.addAll(pat_list_now);
- }
- for (int i = 0; i < pat_list_now.size(); i++) {
- if ((PID == pat_list_now.get(i).PID) && (PID != 0)) {
- pmt_list.addAll(readPMT(payload, pat_list_now.get(i).Program_TABLE));
+ if (payload_byte != null) {
+ if ((PID == 0) && (begin_payload_unit)) {
+ //cal.showPAT(tsbyte);
+ if (isPAT(payload_byte)){
+ pat_list_now = readPAT_byte(payload_byte);
+ if (pat_list_now.size()>0){
+ pat_list_all=pat_list_now;
+ }
+ //pat_list_all.addAll(pat_list_now);
+ }
+ }
+ for (int i = 0; i < pat_list_now.size(); i++) {
+ if ((PID == pat_list_now.get(i).PID) && (PID != 0)) {
+ pmt_list.addAll(readPMT_byte(payload_byte, pat_list_now.get(i).Program_TABLE));
+ }
}
}
tsbyte = "";
}
- private ArrayList<PATData> readPAT(String payload_temp) {
+ private ArrayList<PATData> readPAT_byte(byte[] payload_temp) {
/*
* payloadの文字列を入力して[intテーブル,int PID]のArrayListを返す。
*/
int tableid;
int sectionlength;
+ calc cal = new calc();
ArrayList program_number = new ArrayList();
- tableid = TSString2Int(payload_temp, 0, 8);
- sectionlength = TSString2Int(payload_temp, 12, 12);//-40-32;
+ tableid = cal.byte2int(payload_temp, 0, 8);
+ sectionlength = cal.byte2int(payload_temp, 12, 12);//-40-32;
int patnum = sectionlength * 8 - 72;
patnum = patnum / 32;
- byte[] test = String2Byte(payload_temp);
- String stest = "";
- for (int ij = 0; ij < test.length; ij++) {
- int it = test[ij] & 0xFF;
- String s = Integer.toBinaryString(it);
- if (s.length() < 8) {
- for (int i2 = s.length(); i2 < 8; i2++) {
- s = "0" + s;
+ for (int i = 0; i < patnum; i++) {
+ if (payload_temp.length * 8 > 64 + 32 * i + 96) {
+ if (cal.byte2int(payload_temp, 64 + 32 * i + 16, 3) == 7) {
+ PATData patd = new PATData();
+ patd.Program_TABLE = cal.byte2int(payload_temp, 64 + 32 * i, 16);
+ patd.PID = cal.byte2int(payload_temp, 32 * i + 64 + 19, 13);
+ program_number.add(patd);
}
}
- stest = stest + s;
- }
- payload_temp = stest;
- int nowbit = 64;
- for (int i = 0; i < patnum; i++) {
- PATData patd=new PATData();
- patd.Program_TABLE=TSString2Int(payload_temp, 64 + 32 * i, 16);
- patd.PID=TSString2Int(payload_temp, 32 * i + 64 + 19, 13);
- program_number.add(patd);
}
return program_number;
}
-
- private ArrayList<PMTData> readPMT(String payload_temp, int PAT_TABLE) {
+ private ArrayList<PMTData> readPMT_byte(byte[] payload_temp, int PAT_TABLE) {
ArrayList<PMTData> pmt_t = new ArrayList<PMTData>();
- int tableid = TSString2Int(payload_temp, 0, 8);
- int section_length = TSString2Int(payload_temp, 12, 12);
- int pcr_pid = TSString2Int(payload_temp, 67, 13);
- int program_info_length = TSString2Int(payload_temp, 84, 12);
+ calc cal = new calc();
+ int tableid = cal.byte2int(payload_temp, 0, 8);
+ int section_length = cal.byte2int(payload_temp, 12, 12);
+ int pcr_pid = cal.byte2int(payload_temp, 67, 13);
+ int program_info_length = cal.byte2int(payload_temp, 84, 12);
boolean end = false;
int cur_point = 96 + program_info_length * 8;
- if (cur_point>section_length*8){
- end=true;
+ if ((cur_point > section_length * 8 - 1) || (cur_point > payload_temp.length * 8 - 11)) {
+ end = true;
}
while (end != true) {
- String gs=payload_temp.substring(cur_point+8,cur_point+11);
- if (gs.matches("111")&&payload_temp.length()>cur_point+40){
- int pmt_stream_type = TSString2Int(payload_temp, cur_point, 8);
- int elementary_PID = TSString2Int(payload_temp, cur_point + 11, 13);
+ if (cal.byte2int(payload_temp, cur_point + 8, 3) == 7 && cal.byte2int(payload_temp, cur_point + 24, 4) == 15 && payload_temp.length * 8 > cur_point + 40) {
+ int pmt_stream_type = cal.byte2int(payload_temp, cur_point, 8);
+ int elementary_PID = cal.byte2int(payload_temp, cur_point + 11, 13);
//System.out.println(Integer.toString(cur_point)+" : "+Integer.toString(section_length*8));
- int es_length = TSString2Int(payload_temp, cur_point + 28, 12);
+ int es_length = cal.byte2int(payload_temp, cur_point + 28, 12);
/*if (pmt_stream_type==0x02){
- Descriptor des=new Descriptor();
- Object a=des.getDescriptors(payload_temp.substring(cur_point + 40,cur_point + 40+es_length*8));
+ Descriptor des=new Descriptor();
+ Object a=des.getDescriptors(payload_temp.substring(cur_point + 40,cur_point + 40+es_length*8));
}else if(pmt_stream_type==0x0f){
- Descriptor des=new Descriptor();
- Object a=des.getDescriptors(payload_temp.substring(cur_point + 40,cur_point + 40+es_length*8));
+ Descriptor des=new Descriptor();
+ Object a=des.getDescriptors(payload_temp.substring(cur_point + 40,cur_point + 40+es_length*8));
}*/
-
- PMTData pmtd=new PMTData();
- if ((pmt_stream_type==0x02)||(pmt_stream_type==0x0f)){
- pmtd.Stream_Type=pmt_stream_type;
- pmtd.Program_Table=PAT_TABLE;
- pmtd.Elementary_PID=elementary_PID;
- pmtd.PCR_PID=pcr_pid;
+
+ PMTData pmtd = new PMTData();
+ if ((pmt_stream_type == 0x02) || (pmt_stream_type == 0x0f)||(pmt_stream_type == 0x06)) {
+ pmtd.Stream_Type = pmt_stream_type;
+ pmtd.Program_Table = PAT_TABLE;
+ pmtd.Elementary_PID = elementary_PID;
+ pmtd.PCR_PID = pcr_pid;
pmt_t.add(pmtd);
}
cur_point = cur_point + 40 + es_length * 8;
//System.out.println(Integer.toString(cur_point)+" : "+Integer.toString(section_length*8));
- if ((cur_point > section_length * 8 - 1)|| (cur_point>payload_temp.length()-11)) {
+ if ((cur_point > section_length * 8 - 1) || (cur_point > payload_temp.length * 8 - 11)) {
end = true;
}
- }else{
- end=true;
+ if (payload_temp.length * 8 < cur_point + 40){
+ end = true;
+ }
+ } else {
+ end = true;
}
}
return pmt_t;
}
+
public ArrayList<EITData> readEIT(byte[] ts) {
- String payload_temp=getPayload(ts);
+ String payload_temp = getPayload(ts);
int tableid = TSString2Int(payload_temp, 0, 8);
int section_length = TSString2Int(payload_temp, 12, 12);
int program_number = TSString2Int(payload_temp, 24, 16);
- boolean current_next_indicator= (TSString2Int(payload_temp, 47, 1)==1);
+ boolean current_next_indicator = (TSString2Int(payload_temp, 47, 1) == 1);
int section_number = TSString2Int(payload_temp, 48, 8);
- int curpoint=112;
- ArrayList<EITData> ret=new ArrayList<EITData>();
- while (curpoint<24+section_length*8-32){
- EITData eitd=new EITData();
- eitd.current_newt_indicator=current_next_indicator;
+ int curpoint = 112;
+ ArrayList<EITData> ret = new ArrayList<EITData>();
+ while (curpoint < 24 + section_length * 8 - 32) {
+ EITData eitd = new EITData();
+ eitd.current_newt_indicator = current_next_indicator;
eitd.event_id = TSString2Int(payload_temp, curpoint, 16);
- eitd.program_number=program_number;
+ eitd.program_number = program_number;
eitd.section_number = section_number;
- int des_len=TSString2Int(payload_temp, curpoint+84, 12);
- Descriptor des=new Descriptor();
- eitd.descriptors=des.getDescriptors(payload_temp.substring(curpoint+96,curpoint+84+des_len*8));
+ int des_len = TSString2Int(payload_temp, curpoint + 84, 12);
+ Descriptor des = new Descriptor();
+ eitd.descriptors = des.getDescriptors(payload_temp.substring(curpoint + 96, curpoint + 84 + des_len * 8));
ret.add(eitd);
- curpoint=curpoint+84+des_len*8;
+ curpoint = curpoint + 84 + des_len * 8;
}
return ret;
}
+
private int TSString2Int(String s, int begin, int length) {
String st = s.substring(begin, begin + length);
int i = Integer.parseInt(st, 2);
return i;
}
- public byte[] splitPAT(byte[] ts, int p_table) {
+ public byte[] splitPAT_byte(byte[] ts, int p_table) {
/**
- *
+ *
* p_tableで指定された番組テーブルのみを取り出すPATを作る。
*/
- int matchnum=0;
- byte[] tbb=new byte[ts.length-4];
- System.arraycopy(ts,4,tbb,0,tbb.length);
- if (bPAT_payload!=null){
- if (Arrays.equals(tbb, bPAT_payload)){
- byte[] retb=new byte[188];
- System.arraycopy(ts,0,retb,0,4);
- System.arraycopy(bPAT_payload,0,retb,4,184);
+ byte[] tbb = new byte[ts.length - 4];
+ System.arraycopy(ts, 4, tbb, 0, tbb.length);
+ if (bPAT_payload != null) {
+ if (Arrays.equals(tbb, bPAT_payload)) {
+ byte[] retb = new byte[188];
+ System.arraycopy(ts, 0, retb, 0, 4);
+ System.arraycopy(bPAT_payload, 0, retb, 4, 184);
return retb;
}
}
- String tsbyte = byte2String2(ts);
- String tsheader = "";
- header = tsbyte.substring(0, 31);
- payload = tsbyte.substring(32);
- starter = TSString2Int(tsbyte, 0, 8);
- transporterror = TSString2Int(tsbyte, 8, 1);
- payloadstart = TSString2Int(tsbyte, 9, 1);
- transport_priority = TSString2Int(tsbyte, 10, 1);
- PID = TSString2Int(tsbyte, 11, 13);
- adaptation_field = TSString2Int(tsbyte, 26, 2);
- continuity_counter = TSString2Int(tsbyte, 28, 4);
- int adaptation_length_t = TSString2Int(tsbyte, 32, 8);
- payload = "";
- if (PID != 8191) {
- if (adaptation_field == 1) {
- pointer_field = TSString2Int(tsbyte, 32, 8);
- tsheader = tsbyte.substring(0, 40);
- payload = tsbyte.substring(40);
- } else if (adaptation_field == 3) {
- if (adaptation_length_t < 188) {
- adaptation_length_t = adaptation_length_t * 8;
+ calc cal = new calc();
+ header_byte = cal.byte2subbyte(ts, 0, 4);
+ byte[] pointer_byte = cal.byte2subbyte(ts, 4, 1);
+ payload_byte = cal.byte2subbyte(ts, 4, ts.length - 4);
+ starter = cal.byte2int(ts, 0, 8);
+ boolean begin_payload_unit = cal.byte2int(ts, 9, 1) == 1;
+ transporterror = cal.byte2int(ts, 8, 1);
+ payloadstart = cal.byte2int(ts, 9, 1);
+ transport_priority = cal.byte2int(ts, 10, 1);
+ PID = cal.byte2int(ts, 11, 13);
+ adaptation_field = cal.byte2int(ts, 26, 2);
+ continuity_counter = cal.byte2int(ts, 28, 4);
+ if (adaptation_field == 1) {
+ if (begin_payload_unit) {
+ pointer_field = cal.byte2int(ts, 32, 8);
+ if ((ts.length - 5 - pointer_field) < (5 + pointer_field)) {
+ payload_byte = null;
+ } else {
+ payload_byte = cal.byte2subbyte(ts, 5 + pointer_field, ts.length - 5 - pointer_field);
+ }
+ } else {
+ payload_byte = cal.byte2subbyte(ts, 4, ts.length - 4);
+ }
+ } else if (adaptation_field == 3) {
+ adaptation_length = cal.byte2int(ts, 32, 8);
+ if ((adaptation_length < 184) & ((ts.length * 8 - adaptation_length * 8) > 48)) {
+ adaptation_length = adaptation_length * 8;
+ }
+ adaptation_byte = cal.byte2subbyte(ts, 4, 1 + adaptation_length / 8);
+ if (begin_payload_unit) {
+ pointer_field = cal.byte2int(ts, 40 + adaptation_length, 8);
+ if ((ts.length - 6 - (adaptation_length / 8) - pointer_field) < (6 + (adaptation_length / 8) + pointer_field)) {
+ payload_byte = null;
+ } else {
+ payload_byte = cal.byte2subbyte(ts, 6 + (adaptation_length / 8) + pointer_field, ts.length - 6 - (adaptation_length / 8) - pointer_field);
+ }
+ } else {
+ payload_byte = cal.byte2subbyte(ts, 5 + adaptation_length / 8, ts.length - 5 - adaptation_length / 8);
+ }
+ } else {
+ payload_byte = null;
+ }
+ if ((PID == 0) && (begin_payload_unit) && (payload_byte != null)) {
+ byte[] new_pointer=new byte[1];
+ new_pointer[0]=0;
+ if (isPAT(payload_byte)){
+ payload_byte = makePAT_byte(new_pointer, payload_byte, p_table);
+ if (payload_byte.length>0){
+ bPAT_payload = payload_byte;
}
- tsheader = tsbyte.substring(0, 48 + adaptation_length_t);
- payload = tsbyte.substring(48 + adaptation_length_t);
}
}
- if (PID == 0) {
- //showPAT(tsbyte);
- payload = makePAT(tsheader,payload, p_table);
- byte[] retb=String2Byte(payload);
- bPAT_payload=retb;
+ if ((payload_byte != null)&& (begin_payload_unit)) {
+ ByteArrayOutputStream baos = new ByteArrayOutputStream(ts.length);
+ baos.write(header_byte, 0, header_byte.length);
+ baos.write(pointer_byte, 0, pointer_byte.length);
+ baos.write(payload_byte, 0, payload_byte.length);
+ for (int ir = 0; ir < 188-baos.size(); ir++) {
+ baos.write(0xFF);
+ }
+ return baos.toByteArray();
+ } else {
+ return null;
}
- String rets = tsheader + payload;
- return String2Byte(rets);
}
- private String makePAT(String tsheader,String payload_temp, int Table) {
+ private byte[] makePAT_byte(byte[] pointer_field, byte[] payload_temp, int Table) {
+ ByteArrayOutputStream baos = new ByteArrayOutputStream(payload_temp.length);
int sectionlength;
- StringBuffer sb=new StringBuffer();
- //ArrayList program_number = new ArrayList();
- //System.out.println("Pay:"+payload_temp);
- //int tableid = TSString2Int(payload_temp, 0, 8);
- sectionlength = TSString2Int(payload_temp, 12, 12);//-40-32;
+ calc cal = new calc();
+ sectionlength = cal.byte2int(payload_temp, 12, 12); //-40-32;
int patnum = sectionlength * 8 - 72;
- //String rets = "";//="00000000";//pointer field
- //rets = rets + payload_temp.substring(0, 12);//セクション長の前まで
- sb.append(payload_temp.substring(0,12));
+ baos.write(payload_temp, 0, 1);
int new_section_length = (2 * 32 + 32 + 40) / 8;
- sb.append(Int2String(new_section_length, 12));
- sb.append(payload_temp.substring(24, 64));
- //rets = rets + Int2String(new_section_length, 12);
- //rets = rets + payload_temp.substring(24, 64);//ループ前まで
- String loop = "";
+ baos.write(cal.joinByte((byte) cal.byte2int(payload_temp, 8, 4), (byte) (new_section_length & 0xF00), 4));
+ baos.write((byte) (new_section_length & 0xFF));
+ baos.write(payload_temp, 3, 5);
patnum = patnum / 32;
- //String crcnow = payload_temp.substring(64 + 32 * patnum, 64 + 32 * patnum + 32);
+ int nowt = 8;
for (int i = 0; i < patnum; i++) {
int[] pat = new int[2];
- pat[0] = TSString2Int(payload_temp, 64 + 32 * i, 16);
- pat[1] = TSString2Int(payload_temp, 32 * i + 64 + 19, 13);
+ pat[0] = cal.byte2int(payload_temp, 64 + 32 * i, 16);
+ pat[1] = cal.byte2int(payload_temp, 32 * i + 64 + 19, 13);
if (pat[0] == 0) {
- sb.append(payload_temp.substring(64 + 32 * i, 95 + 32 * i + 1));
- //loop = loop+payload_temp.substring(64 + 32 * i, 95 + 32 * i + 1);
+ baos.write(payload_temp, 8 + 4 * i, 4);
+ nowt = nowt + 4;
} else if (pat[0] == Table) {
- sb.append(payload_temp.substring(64 + 32 * i, 95 + 32 * i + 1));
- //loop = loop + payload_temp.substring(64 + 32 * i, 95 + 32 * i + 1);
+ baos.write(payload_temp, 8 + 4 * i, 4);
+ nowt = nowt + 4;
i = patnum;
}
}
- String s2=tsheader.substring(tsheader.length()-8);
- s2=s2+sb.toString();
- String s = getCRC32(s2);
- sb.append(s);
- //rets = rets + s;
- int ill3 = payload_temp.length() - sb.length();
+ ByteArrayOutputStream baoscrc = new ByteArrayOutputStream(nowt + 1);
+ baoscrc.write(pointer_field[0]);
+ baoscrc.write(baos.toByteArray(), 0, baos.size());
+ byte[] crc = cal.getCRC32_byte(baoscrc.toByteArray(), 1);
+ //byte[] crc = getCRC32_byte(baoscrc.toByteArray(), 1);
+ baos.write(crc, 0, crc.length);
+ int ill3 = payload_temp.length - baos.size();
for (int ir = 0; ir < ill3; ir++) {
- sb.append("1");
- //rets = rets + "1";
+ baos.write(0xFF);
+ }
+ return baos.toByteArray();
+ }
+ public boolean isPAT(byte[] byte_tmp){
+ calc cal=new calc();
+ if ((cal.byte2int(byte_tmp,0,8)==0)&&(cal.byte2int(byte_tmp,9,3)==3)&&(cal.byte2int(byte_tmp, 40, 2)==3)){
+ return true;
+ }else{
+ return false;
+ }
+ }
+ public boolean isPMT(byte[] byte_tmp){
+ calc cal=new calc();
+ if ((cal.byte2int(byte_tmp,9,3)==3)&&(cal.byte2int(byte_tmp, 40, 2)==3)&&(cal.byte2int(byte_tmp,64,3)==3)&&(cal.byte2int(byte_tmp,80,4)==15)){
+ return true;
+ }else{
+ return false;
}
- return sb.toString();
}
- private String getCRC32(String s){
- return getCRC32(String2Byte(s),1);
+ private String getCRC32(String s) {
+ return getCRC32(String2Byte(s), 1);
}
- private String getCRC32(byte[] data,int offset) {
+
+ private String getCRC32(byte[] data, int offset) {
// x^32 + x^26 + x^23 + x^22 + x^16 + x^12 + x^11 + x^10 + x^8 + x^7 + x^5 + x^4 + x^2 + x + 1
int[] g = {1, 1, 1, 0, 1, 1, 0, 1, 1, 0, 1, 1, 1, 0, 0, 0, 1, 0, 0, 0, 0, 0, 1, 1, 0, 0, 1, 0, 0, 0, 0, 0, 1};
int[] shift_reg = new int[32];
for (int i = 0; i < 4; i++) {
crc32[i] = (byte) (0xFF & (crc >>> ((3 - i) * 8)));
}
- String s=Long2String(crc, 32);
+ String s = Long2String(crc, 32);
return s;
}
- private String addzero(int num){
- switch (num){
+ private byte[] getCRC32_byte(byte[] data, int offset) {
+ // x^32 + x^26 + x^23 + x^22 + x^16 + x^12 + x^11 + x^10 + x^8 + x^7 + x^5 + x^4 + x^2 + x + 1
+ int[] g = {1, 1, 1, 0, 1, 1, 0, 1, 1, 0, 1, 1, 1, 0, 0, 0, 1, 0, 0, 0, 0, 0, 1, 1, 0, 0, 1, 0, 0, 0, 0, 0, 1};
+ int[] shift_reg = new int[32];
+ long crc = 0;
+ byte crc32[] = new byte[4];
+
+ // Initialize shift register's to '1'
+ java.util.Arrays.fill(shift_reg, 1);
+
+ // Calculate nr of data bits, summa of bits
+ int nr_bits = (data.length - offset) * 8;
+
+ for (int bit_count = 0, bit_in_byte = 0, data_bit; bit_count < nr_bits; bit_count++) {
+ // Fetch bit from bitstream
+ data_bit = (data[offset] & 0x80 >>> (bit_in_byte++)) != 0 ? 1 : 0;
+
+ if ((bit_in_byte &= 7) == 0) {
+ offset++;
+ }
+
+ // Perform the shift and modula 2 addition
+ data_bit ^= shift_reg[31];
+
+ for (int i = 31; i > 0; i--) {
+ shift_reg[i] = g[i] == 1 ? (shift_reg[i - 1] ^ data_bit) : shift_reg[i - 1];
+ }
+
+ shift_reg[0] = data_bit;
+ }
+
+ for (int i = 0; i < 32; i++) {
+ crc = ((crc << 1) | (shift_reg[31 - i]));
+ }
+
+ for (int i = 0; i < 4; i++) {
+ crc32[i] = (byte) (0xFF & (crc >>> ((3 - i) * 8)));
+ }
+ return crc32;
+ }
+
+ private String addzero(int num) {
+ switch (num) {
case 0:
return "";
case 1:
case 8:
return "00000000";
default:
- StringBuffer sb=new StringBuffer();
- for (int i=0;i<num;i++){
+ StringBuffer sb = new StringBuffer();
+ for (int i = 0; i < num; i++) {
sb.append("0");
}
return sb.toString();
}
}
- private String byte2String(byte[] b) {
- StringBuffer sb=new StringBuffer(8*b.length);
- for (int i = 0; i < b.length; i++) {
- StringBuffer sb2=new StringBuffer(8);
- sb2.append(Integer.toBinaryString(b[i] & 0xFF));
- if ((sb2.length() < 8) & (sb2.length() > 0)) {
- sb2.insert(0,addzero(8-sb2.length()));
- }
- sb.append(sb2);
- }
- return sb.toString();
- }
- private String byte2String2(byte[] b){
- int bl=b.length;
- bl=bl-bl%8;
- bl=bl/8;
- StringBuffer sb=new StringBuffer();
- for (int i=0;i<bl;i++){
- long retl=0;
- for (int j=0;j<8;j++){
- retl=retl<<8;
- int ri=b[i*8+j]&0xFF;
- retl=retl+ri;
+
+ private String byte2String2(byte[] b) {
+ int bl = b.length;
+ bl = bl - bl % 8;
+ bl = bl / 8;
+ StringBuffer sb = new StringBuffer();
+ for (int i = 0; i < bl; i++) {
+ long retl = 0;
+ for (int j = 0; j < 8; j++) {
+ retl = retl << 8;
+ int ri = b[i * 8 + j] & 0xFF;
+ retl = retl + ri;
}
- sb.append(Long2String(retl,64));
+ sb.append(Long2String(retl, 64));
}
- int bl2=b.length%8;
- bl2=(bl2-bl2%4)/4;
- for (int i=0;i<bl2;i++){
- int reti=0;
- for (int j=0;j<4;j++){
- reti=reti<<8;
- reti=reti+(b[bl*8+4*i+j]&0xFF);
+ int bl2 = b.length % 8;
+ bl2 = (bl2 - bl2 % 4) / 4;
+ for (int i = 0; i < bl2; i++) {
+ int reti = 0;
+ for (int j = 0; j < 4; j++) {
+ reti = reti << 8;
+ reti = reti + (b[bl * 8 + 4 * i + j] & 0xFF);
}
- sb.append(Int2String(reti,32));
+ sb.append(Int2String(reti, 32));
}
- for (int i=0;i<(b.length%8)%4;i++){
- sb.append(Int2String(b[bl*8+bl2*4+i]&0xFF,8));
+ for (int i = 0; i < (b.length % 8) % 4; i++) {
+ sb.append(Int2String(b[bl * 8 + bl2 * 4 + i] & 0xFF, 8));
}
return sb.toString();
}
- private String byte2HexString(byte[] b) {
- String ret = "";
- for (int i = 0; i < b.length; i++) {
- ret = ret + Integer.toHexString(b[i] & 0xFF);
- }
- return ret;
- }
-
- private boolean testCRC(String base, String ans, int begin_n, int end_n) {
- String tests1 = base.substring(begin_n, end_n);
- byte[] test1 = String2Byte(tests1);
- int t32 = 0;
- int begin = begin_n;
- int end = end_n;
- byte[] test2 = String2Byte(ans);
- String tests2 = ans;
- CRC32 crc = new CRC32();
- crc.reset();
- crc.update(test1);
-
- if (crc.getValue() == Long.parseLong(tests2, 2)) {
- System.out.print("正解が出ました。\n");
- System.out.print("begin : " + Integer.toString(begin_n) + " end : " + Integer.toString(end_n));
-
- return true;
- }
- if (Long.parseLong(getCRC32(test1,1), 2) == Long.parseLong(tests2, 2)) {
- System.out.print("正解が出ました。(getCRC)\n");
- System.out.print("begin : " + Integer.toString(begin_n) + " end : " + Integer.toString(end_n));
- return true;
- }
- if (Long.parseLong(getCRC32(test1,1), 2) == Long.parseLong(tests2, 2)) {
- System.out.print("正解が出ました。(getCRC_2)\n");
- System.out.println("begin : " + Integer.toString(begin_n) + " end : " + Integer.toString(end_n));
- showPAT(base);
- System.out.println("begin : " + base.substring(begin_n,begin_n+32));
- System.out.println("near : " + base.substring(end_n-32, end_n));
- System.out.println("near2: " + base.substring(end_n, end_n+32));
- System.out.println("near3: " + base.substring(end_n+32, end_n+64));
- return true;
- }
- return false;
- }
-
private String Int2String(int num, int length) {
String ret = Integer.toBinaryString(num);
if (ret.length() < length) {
public int getPID() {
return PID;
}
- public String getPayload(byte[] ts){
+
+ public String getPayload(byte[] ts) {
/**
* 188バイトのtsから読み出したbyteを与える
*/
String tsbyte = byte2String2(ts);
//header = tsbyte.substring(0, 31);
- String ret_payload="";
+ String ret_payload = "";
//starter = TSString2Int(tsbyte, 0, 8);
//transporterror = TSString2Int(tsbyte, 8, 1);
//payloadstart = TSString2Int(tsbyte, 9, 1);
ret_payload = tsbyte.substring(40);
} else if (af == 3) {
int al = TSString2Int(tsbyte, 32, 8);
- if ((al < 184)&((tsbyte.length()-al*8)>48)) {
+ if ((al < 184) & ((tsbyte.length() - al * 8) > 48)) {
al = al * 8;
}
ret_payload = tsbyte.substring(48 + al);
}
return ret_payload;
}
- public ArrayList<PMTData> readPMT(byte[] ts,int TABLE_NUM){
- String payload=getPayload(ts);
- return readPMT(payload, TABLE_NUM);
+
+ public byte[] getPayload_byte(byte[] ts) {
+ /**
+ * 188バイトのtsから読み出したbyteを与える
+ */
+ calc cal = new calc();
+ String tsbyte = byte2String2(ts);
+ //header = tsbyte.substring(0, 31);
+ byte[] retb = null;
+ //starter = TSString2Int(tsbyte, 0, 8);
+ //transporterror = TSString2Int(tsbyte, 8, 1);
+ //payloadstart = TSString2Int(tsbyte, 9, 1);
+ //transport_priority = TSString2Int(tsbyte, 10, 1);
+ int pid = cal.byte2int(ts, 11, 13);
+ int af = cal.byte2int(ts, 26, 2);
+ //continuity_counter = TSString2Int(tsbyte, 28, 4);
+ if (pid != 8191) {
+ if (af == 1) {
+ retb = cal.byte2subbyte(ts, 5, ts.length - 5);
+ } else if (af == 3) {
+ int al = cal.byte2int(ts, 32, 8);
+ if ((al < 184) & ((ts.length * 8 - al * 8) > 48)) {
+ al = al * 8;
+ }
+ retb = cal.byte2subbyte(ts, 6 + al / 8, ts.length - 6 - al / 8);
+ }
+ }
+ return retb;
+ }
+
+ public ArrayList<PMTData> readPMTglobal_byte(byte[] ts, int TABLE_NUM) {
+ byte[] payloadt = getPayload_byte(ts);
+ return readPMT_byte(payloadt, TABLE_NUM);
}
+
public void showPAT(String ts) {
System.out.println("先頭:" + ts.substring(0, 8));
System.out.println("" + ts.substring(8, 11));
System.out.println(Integer.toString(i) + " : " + ts.substring(104 + 32 * i, 136 + 32 * i));
}
System.out.println("Length:" + Integer.toString(ts.length()));
-
-
-
}
}
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