3 import java.util.ArrayList;
4 import java.util.zip.CRC32;
5 import jtssplitter.data.PATData;
6 import jtssplitter.data.PMTData;
8 * To change this template, choose Tools | Templates
9 * and open the template in the editor.
16 public class Mpeg2TSPacket {
19 public String payload;
20 public String adaptation;
21 public byte[] bPAT_payload=null;
22 private String bPAT_payload_made="";
23 //private ArrayList<TsDate> date=new ArrayList<TsDate>();
24 //date.add(new TsDate("Starter"))
26 private int starter;//0-7
27 private int transporterror;//本TSパケットの誤りを示す 1bit 8
28 private int payloadstart;//セクションの先頭バイトが入っているかどうか1bit 9
29 private int transport_priority;//1bit 10
30 private int PID = -1;//tsパケットの種類 13bit 11-23
31 private int transport_scrambled;//2bit 00is " not scrambled" 24-25
32 private int adaptation_field;//2bit 26-27 01:adaptation fieldなしでおk 10は絶対いる 11はペイロードはアダプテーションに続く00は予約
33 private int continuity_counter;//連続性(PIDごとの通し番号) 4bit 28-31
34 //ここからアダプテーションフィールド(最後まで)
35 private int adaptation_length;//8bit 32-39
36 private int discontinuity;//1bit
37 private int random_access;//1bit ランダムアクセスの開始場所となる
38 private int ES_priority;//1bit プライオリティ
39 private int five_flag;//5bit
40 private ArrayList<PATData> pat_list_now = new ArrayList<PATData>();//[0]:番組番号 [1]:PMT PID
41 private ArrayList<PATData> pat_list_all = new ArrayList<PATData>();
42 private ArrayList<PMTData> pmt_list = new ArrayList<PMTData>();//[0]番組番号 [1]テーブルID
43 private int pointer_field;//8bit adaptation fieldの次?
44 private String payload_s;
48 private int staffing_byte;//
50 public Mpeg2TSPacket() {
52 public int getPIDFirst(byte[] ts){
56 //String s=byte2String2(b);
57 //s=s.substring(3,16);
59 return Integer.parseInt(byte2String2(b).substring(3,16),2);
61 public void readTS(byte[] ts) {
63 * 188バイトのtsから読み出したbyteを与える
65 String tsbyte = byte2String2(ts);
66 //header = tsbyte.substring(0, 31);
67 payload = tsbyte.substring(32);
68 //starter = TSString2Int(tsbyte, 0, 8);
69 //transporterror = TSString2Int(tsbyte, 8, 1);
70 //payloadstart = TSString2Int(tsbyte, 9, 1);
71 //transport_priority = TSString2Int(tsbyte, 10, 1);
72 PID = TSString2Int(tsbyte, 11, 13);
73 adaptation_field = TSString2Int(tsbyte, 26, 2);
74 //continuity_counter = TSString2Int(tsbyte, 28, 4);
77 if (adaptation_field == 1) {
78 pointer_field = TSString2Int(tsbyte, 32, 8);
79 payload = tsbyte.substring(40);
80 } else if (adaptation_field == 3) {
81 adaptation_length = TSString2Int(tsbyte, 32, 8);
82 if (adaptation_length < 184) {
83 adaptation_length = adaptation_length * 8;
85 //System.out.println(adaptation_length);
86 adaptation = tsbyte.substring(32, 40 + adaptation_length);
87 pointer_field = TSString2Int(tsbyte, 40 + adaptation_length, 8);
88 payload = tsbyte.substring(48 + adaptation_length);
92 pat_list_now =readPAT(payload);
93 pat_list_all.addAll(pat_list_now);
95 for (int i = 0; i < pat_list_now.size(); i++) {
96 if ((PID == pat_list_now.get(i).PID) && (PID != 0)) {
97 pmt_list.addAll(readPMT(payload, pat_list_now.get(i).Program_TABLE));
103 private ArrayList<PATData> readPAT(String payload_temp) {
105 * payloadの文字列を入力して[intテーブル,int PID]のArrayListを返す。
109 ArrayList program_number = new ArrayList();
110 tableid = TSString2Int(payload_temp, 0, 8);
111 sectionlength = TSString2Int(payload_temp, 12, 12);//-40-32;
112 int patnum = sectionlength * 8 - 72;
113 patnum = patnum / 32;
114 byte[] test = String2Byte(payload_temp);
116 for (int ij = 0; ij < test.length; ij++) {
117 int it = test[ij] & 0xFF;
118 String s = Integer.toBinaryString(it);
119 if (s.length() < 8) {
120 for (int i2 = s.length(); i2 < 8; i2++) {
126 payload_temp = stest;
128 for (int i = 0; i < patnum; i++) {
129 PATData patd=new PATData();
130 patd.Program_TABLE=TSString2Int(payload_temp, 64 + 32 * i, 16);
131 patd.PID=TSString2Int(payload_temp, 32 * i + 64 + 19, 13);
132 program_number.add(patd);
134 return program_number;
137 private ArrayList<PMTData> readPMT(String payload_temp, int PAT_TABLE) {
138 ArrayList<PMTData> pmt_t = new ArrayList<PMTData>();
139 int tableid = TSString2Int(payload_temp, 0, 8);
140 int section_length = TSString2Int(payload_temp, 12, 12);
141 int program_info_length = TSString2Int(payload_temp, 84, 12);
143 int cur_point = 96 + program_info_length * 8;
144 while (end != true) {
145 int pmt_stream_type = TSString2Int(payload_temp, cur_point, 8);
146 int elementary_PID = TSString2Int(payload_temp, cur_point + 11, 13);
147 int es_length = TSString2Int(payload_temp, cur_point + 28, 12);
148 PMTData pmtd=new PMTData();
149 pmtd.Stream_Type=pmt_stream_type;
150 pmtd.Program_Table=PAT_TABLE;
151 pmtd.Elementary_PID=elementary_PID;
153 cur_point = cur_point + 40 + es_length * 8;
154 if (cur_point > section_length * 8) {
161 private int TSString2Int(String s, int begin, int length) {
162 String st = s.substring(begin, begin + length);
163 int i = Integer.parseInt(st, 2);
167 public byte[] splitPAT(byte[] ts, int p_table) {
170 * 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。
173 byte[] tbb=new byte[ts.length-4];
174 for (int i=0;i<ts.length-4;i++){
176 if (bPAT_payload!=null){
177 if (ts[4+i]==bPAT_payload[i]){
182 if (matchnum==ts.length-4){
183 byte[] retb=new byte[188];
184 System.arraycopy(ts,0,retb,0,4);
185 System.arraycopy(bPAT_payload,0,retb,4,184);
190 String tsbyte = byte2String2(ts);
191 String tsheader = "";
192 header = tsbyte.substring(0, 31);
193 payload = tsbyte.substring(32);
194 starter = TSString2Int(tsbyte, 0, 8);
195 transporterror = TSString2Int(tsbyte, 8, 1);
196 payloadstart = TSString2Int(tsbyte, 9, 1);
197 transport_priority = TSString2Int(tsbyte, 10, 1);
198 PID = TSString2Int(tsbyte, 11, 13);
199 adaptation_field = TSString2Int(tsbyte, 26, 2);
200 continuity_counter = TSString2Int(tsbyte, 28, 4);
201 int adaptation_length_t = TSString2Int(tsbyte, 32, 8);
204 if (adaptation_field == 1) {
205 pointer_field = TSString2Int(tsbyte, 32, 8);
206 tsheader = tsbyte.substring(0, 40);
207 payload = tsbyte.substring(40);
208 } else if (adaptation_field == 3) {
209 if (adaptation_length_t < 188) {
210 adaptation_length_t = adaptation_length_t * 8;
212 tsheader = tsbyte.substring(0, 48 + adaptation_length_t);
213 payload = tsbyte.substring(48 + adaptation_length_t);
218 payload = makePAT(tsheader,payload, p_table);
220 String rets = tsheader + payload;
221 return String2Byte(rets);
224 private String makePAT(String tsheader,String payload_temp, int Table) {
226 StringBuffer sb=new StringBuffer();
227 //ArrayList program_number = new ArrayList();
228 //System.out.println("Pay:"+payload_temp);
229 //int tableid = TSString2Int(payload_temp, 0, 8);
230 sectionlength = TSString2Int(payload_temp, 12, 12);//-40-32;
231 int patnum = sectionlength * 8 - 72;
232 //String rets = "";//="00000000";//pointer field
233 //rets = rets + payload_temp.substring(0, 12);//セクション長の前まで
234 sb.append(payload_temp.substring(0,12));
235 int new_section_length = (2 * 32 + 32 + 40) / 8;
236 sb.append(Int2String(new_section_length, 12));
237 sb.append(payload_temp.substring(24, 64));
238 //rets = rets + Int2String(new_section_length, 12);
239 //rets = rets + payload_temp.substring(24, 64);//ループ前まで
241 patnum = patnum / 32;
242 //String crcnow = payload_temp.substring(64 + 32 * patnum, 64 + 32 * patnum + 32);
243 for (int i = 0; i < patnum; i++) {
244 int[] pat = new int[2];
245 pat[0] = TSString2Int(payload_temp, 64 + 32 * i, 16);
246 pat[1] = TSString2Int(payload_temp, 32 * i + 64 + 19, 13);
248 sb.append(payload_temp.substring(64 + 32 * i, 95 + 32 * i + 1));
249 //loop = loop+payload_temp.substring(64 + 32 * i, 95 + 32 * i + 1);
250 } else if (pat[0] == Table) {
251 sb.append(payload_temp.substring(64 + 32 * i, 95 + 32 * i + 1));
252 //loop = loop + payload_temp.substring(64 + 32 * i, 95 + 32 * i + 1);
256 String s2=tsheader.substring(tsheader.length()-8);
258 String s = getCRC32(s2);
261 int ill3 = payload_temp.length() - sb.length();
262 for (int ir = 0; ir < ill3; ir++) {
266 return sb.toString();
268 private String getCRC32(String s){
269 return getCRC32(String2Byte(s),1);
271 private String getCRC32(byte[] data,int offset) {
272 // 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
273 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};
274 int[] shift_reg = new int[32];
276 byte crc32[] = new byte[4];
278 // Initialize shift register's to '1'
279 java.util.Arrays.fill(shift_reg, 1);
281 // Calculate nr of data bits, summa of bits
282 int nr_bits = (data.length - offset) * 8;
284 for (int bit_count = 0, bit_in_byte = 0, data_bit; bit_count < nr_bits; bit_count++) {
285 // Fetch bit from bitstream
286 data_bit = (data[offset] & 0x80 >>> (bit_in_byte++)) != 0 ? 1 : 0;
288 if ((bit_in_byte &= 7) == 0) {
292 // Perform the shift and modula 2 addition
293 data_bit ^= shift_reg[31];
295 for (int i = 31; i > 0; i--) {
296 shift_reg[i] = g[i] == 1 ? (shift_reg[i - 1] ^ data_bit) : shift_reg[i - 1];
299 shift_reg[0] = data_bit;
302 for (int i = 0; i < 32; i++) {
303 crc = ((crc << 1) | (shift_reg[31 - i]));
306 for (int i = 0; i < 4; i++) {
307 crc32[i] = (byte) (0xFF & (crc >>> ((3 - i) * 8)));
309 String s=Long2String(crc, 32);
313 private String addzero(int num){
334 StringBuffer sb=new StringBuffer();
335 for (int i=0;i<num;i++){
338 return sb.toString();
341 private String byte2String(byte[] b) {
342 StringBuffer sb=new StringBuffer(8*b.length);
343 for (int i = 0; i < b.length; i++) {
344 StringBuffer sb2=new StringBuffer(8);
345 sb2.append(Integer.toBinaryString(b[i] & 0xFF));
346 if ((sb2.length() < 8) & (sb2.length() > 0)) {
347 sb2.insert(0,addzero(8-sb2.length()));
351 return sb.toString();
353 private String byte2String2(byte[] b){
357 StringBuffer sb=new StringBuffer();
358 for (int i=0;i<bl;i++){
360 for (int j=0;j<8;j++){
362 int ri=b[i*8+j]&0xFF;
365 sb.append(Long2String(retl,64));
369 for (int i=0;i<bl2;i++){
371 for (int j=0;j<4;j++){
373 reti=reti+(b[bl*8+4*i+j]&0xFF);
375 sb.append(Int2String(reti,32));
377 for (int i=0;i<(b.length%8)%4;i++){
378 sb.append(Int2String(b[bl*8+bl2*4+i]&0xFF,8));
380 return sb.toString();
383 private String byte2HexString(byte[] b) {
385 for (int i = 0; i < b.length; i++) {
386 ret = ret + Integer.toHexString(b[i] & 0xFF);
391 private boolean testCRC(String base, String ans, int begin_n, int end_n) {
392 String tests1 = base.substring(begin_n, end_n);
393 byte[] test1 = String2Byte(tests1);
397 byte[] test2 = String2Byte(ans);
399 CRC32 crc = new CRC32();
403 if (crc.getValue() == Long.parseLong(tests2, 2)) {
404 System.out.print("正解が出ました。\n");
405 System.out.print("begin : " + Integer.toString(begin_n) + " end : " + Integer.toString(end_n));
409 if (Long.parseLong(getCRC32(test1,1), 2) == Long.parseLong(tests2, 2)) {
410 System.out.print("正解が出ました。(getCRC)\n");
411 System.out.print("begin : " + Integer.toString(begin_n) + " end : " + Integer.toString(end_n));
414 if (Long.parseLong(getCRC32(test1,1), 2) == Long.parseLong(tests2, 2)) {
415 System.out.print("正解が出ました。(getCRC_2)\n");
416 System.out.println("begin : " + Integer.toString(begin_n) + " end : " + Integer.toString(end_n));
418 System.out.println("begin : " + base.substring(begin_n,begin_n+32));
419 System.out.println("near : " + base.substring(end_n-32, end_n));
420 System.out.println("near2: " + base.substring(end_n, end_n+32));
421 System.out.println("near3: " + base.substring(end_n+32, end_n+64));
427 private String Int2String(int num, int length) {
428 String ret = Integer.toBinaryString(num);
429 if (ret.length() < length) {
430 int it = length - ret.length();
431 for (int i = 0; i < it; i++) {
438 private String Long2String(long num, int length) {
439 String ret = Long.toBinaryString(num);
440 if (ret.length() < length) {
441 int it = length - ret.length();
442 for (int i = 0; i < it; i++) {
449 private byte[] String2Byte(String ts) {
450 //StringBuffer sb=new StringBuffer(ts);
451 int len = ts.length() - ts.length() % 8;
453 byte[] ret = new byte[len];
454 for (int i = 0; i < len; i++) {
455 String tet = ts.substring(i * 8, i * 8 + 8);
456 int itt = TSString2Int(tet, 0, 8);
462 public ArrayList getPAT() {
466 public void setPAT(ArrayList pat) {
471 public ArrayList getPMT() {
475 public void setPMT(ArrayList pmt) {
479 public int getPID() {
483 public void showPAT(String ts) {
484 System.out.println("先頭:" + ts.substring(0, 8));
485 System.out.println("" + ts.substring(8, 11));
486 System.out.println("PID:" + ts.substring(11, 24));
487 System.out.println("" + ts.substring(24, 32));
488 System.out.println("Adap_Len:" + ts.substring(32, 40));
489 System.out.println("TableID:" + ts.substring(40, 48));
490 System.out.println("" + ts.substring(48, 52));
491 System.out.println("len : " + ts.substring(52, 64) + "//" + Integer.toString(Integer.parseInt(ts.substring(52, 64), 2)));
492 System.out.println("TS ID:" + ts.substring(64, 80));
493 System.out.println("11:" + ts.substring(80, 82));
494 System.out.println("" + ts.substring(82, 104));
495 for (int i = 0; i < 10; i++) {
496 System.out.println(Integer.toString(i) + " : " + ts.substring(104 + 32 * i, 136 + 32 * i));
498 System.out.println("Length:" + Integer.toString(ts.length()));