public void readTsFile(SeekableByteChannel ch) throws IOException {
ch.position(0);
ByteBuffer buf = ByteBuffer.allocate(BUFFER_SIZE);
for (long pos = ch.position(); ch.read(buf) != -1; pos = ch.position()) {
buf.flip();
while (buf.hasRemaining()) {
ByteBuffer tsBuf = NIOUtils.read(buf, 188);
pos += 188;
Assert.assertEquals(0x47, tsBuf.get() & 0xff);
int guidFlags = ((tsBuf.get() & 0xff) << 8) | (tsBuf.get() & 0xff);
int guid = (int) guidFlags & 0x1fff;
int payloadStart = (guidFlags >> 14) & 0x1;
int b0 = tsBuf.get() & 0xff;
int counter = b0 & 0xf;
if ((b0 & 0x20) != 0) {
NIOUtils.skip(tsBuf, tsBuf.get() & 0xff);
}
boolean sectionSyntax =
payloadStart == 1 && (getRel(tsBuf, getRel(tsBuf, 0) + 2) & 0x80) == 0x80;
if (sectionSyntax) {
NIOUtils.skip(tsBuf, tsBuf.get() & 0xff);
}
if (!onPkt(guid, payloadStart == 1, tsBuf, pos - tsBuf.remaining())) return;
}
buf.flip();
}
}
@Override
protected ByteBuffer readPes(
SeekableByteChannel ch, long pesPosition, int pesSize, int payloadSize, int pesAbsIdx)
throws IOException {
ch.position(pesPosition * 188);
ByteBuffer buf = NIOUtils.fetchFrom(ch, pesSize * 188);
// NOW REMOVE THE TS CRAP
ByteBuffer dst = buf.duplicate();
while (buf.hasRemaining()) {
ByteBuffer tsBuf = NIOUtils.read(buf, 188);
Assert.assertEquals(0x47, tsBuf.get() & 0xff);
int guidFlags = ((tsBuf.get() & 0xff) << 8) | (tsBuf.get() & 0xff);
int guid = (int) guidFlags & 0x1fff;
if (guid == targetGuid) {
int b0 = tsBuf.get() & 0xff;
int counter = b0 & 0xf;
if ((b0 & 0x20) != 0) {
NIOUtils.skip(tsBuf, tsBuf.get() & 0xff);
}
dst.put(tsBuf);
}
}
dst.flip();
readPESHeader(dst, 0);
dst.limit(dst.position() + payloadSize);
return dst;
}
private static void dumpTSPackets(ReadableByteChannel _in) throws IOException {
ByteBuffer buf = ByteBuffer.allocate(188 * 1024);
while (_in.read(buf) != -1) {
buf.flip();
buf.limit((buf.limit() / 188) * 188);
int pmtPid = -1;
for (int pkt = 0; buf.hasRemaining(); ++pkt) {
ByteBuffer tsBuf = NIOUtils.read(buf, 188);
Assert.assertEquals(0x47, tsBuf.get() & 0xff);
int guidFlags = ((tsBuf.get() & 0xff) << 8) | (tsBuf.get() & 0xff);
int guid = (int) guidFlags & 0x1fff;
int payloadStart = (guidFlags >> 14) & 0x1;
int b0 = tsBuf.get() & 0xff;
int counter = b0 & 0xf;
if ((b0 & 0x20) != 0) {
NIOUtils.skip(tsBuf, (tsBuf.get() & 0xff));
}
System.out.print(
"#"
+ pkt
+ "[guid: "
+ guid
+ ", cnt: "
+ counter
+ ", start: "
+ (payloadStart == 1 ? "y" : "-"));
if (guid == 0 || guid == pmtPid) {
System.out.print(", PSI]: ");
if (payloadStart == 1) {
NIOUtils.skip(tsBuf, (tsBuf.get() & 0xff));
}
if (guid == 0) {
PATSection pat = PATSection.parsePAT(tsBuf);
IntIntMap programs = pat.getPrograms();
pmtPid = programs.values()[0];
printPat(pat);
} else if (guid == pmtPid) {
PMTSection pmt = PMTSection.parsePMT(tsBuf);
printPmt(pmt);
}
} else {
System.out.print("]: " + tsBuf.remaining());
}
System.out.println();
}
buf.clear();
}
}
protected void analyseBuffer(ByteBuffer buf, long pos) {
while (buf.hasRemaining()) {
ByteBuffer tsBuf = NIOUtils.read(buf, 188);
pos += 188;
Assert.assertEquals(0x47, tsBuf.get() & 0xff);
int guidFlags = ((tsBuf.get() & 0xff) << 8) | (tsBuf.get() & 0xff);
int guid = (int) guidFlags & 0x1fff;
for (int i = 0; i < indexer.indexers.length; i++) {
if (guid == indexer.indexers[i].targetGuid) {
int payloadStart = (guidFlags >> 14) & 0x1;
int b0 = tsBuf.get() & 0xff;
int counter = b0 & 0xf;
if ((b0 & 0x20) != 0) {
NIOUtils.skip(tsBuf, tsBuf.get() & 0xff);
}
indexer.indexers[i].analyseBuffer(tsBuf, pos - tsBuf.remaining());
}
}
}
}
