PesHeader::PesHeader(DemuxerStream& stream)
: pts(0xffffffffffffffffull)
, dts(0xffffffffffffffffull)
, size(0)
, new_au(false)
{
u16 header;
stream.get(header);
stream.get(size);
if (size)
{
u8 empty = 0;
u8 v;
while (true)
{
stream.get(v);
if (v != 0xFF) break; // skip padding bytes
empty++;
if (empty == size) return;
};
if ((v & 0xF0) == 0x20 && (size - empty) >= 5) // pts only
{
new_au = true;
pts = stream.get_ts(v);
stream.skip(size - empty - 5);
}
else
{
new_au = true;
if ((v & 0xF0) != 0x30 || (size - empty) < 10)
{
cellDmux->Error("PesHeader(): pts not found");
Emu.Pause();
}
pts = stream.get_ts(v);
stream.get(v);
if ((v & 0xF0) != 0x10)
{
cellDmux->Error("PesHeader(): dts not found");
Emu.Pause();
}
dts = stream.get_ts(v);
stream.skip(size - empty - 10);
}
}
}
PesHeader::PesHeader(DemuxerStream& stream)
: pts(CODEC_TS_INVALID)
, dts(CODEC_TS_INVALID)
, size(0)
, has_ts(false)
, is_ok(false)
{
u16 header;
if (!stream.get(header))
{
throw EXCEPTION("End of stream (header)");
}
if (!stream.get(size))
{
throw EXCEPTION("End of stream (size)");
}
if (!stream.check(size))
{
throw EXCEPTION("End of stream (size=%d)", size);
}
u8 pos = 0;
while (pos++ < size)
{
u8 v;
if (!stream.get(v))
{
return; // should never occur
}
if (v == 0xff) // skip padding bytes
{
continue;
}
if ((v & 0xf0) == 0x20 && (size - pos) >= 4) // pts only
{
pos += 4;
pts = stream.get_ts(v);
has_ts = true;
}
else if ((v & 0xf0) == 0x30 && (size - pos) >= 9) // pts and dts
{
pos += 5;
pts = stream.get_ts(v);
stream.get(v);
has_ts = true;
if ((v & 0xf0) != 0x10)
{
cellDmux.Error("PesHeader(): dts not found (v=0x%x, size=%d, pos=%d)", v, size, pos - 1);
stream.skip(size - pos);
return;
}
pos += 4;
dts = stream.get_ts(v);
}
else
{
cellDmux.Warning("PesHeader(): unknown code (v=0x%x, size=%d, pos=%d)", v, size, pos - 1);
stream.skip(size - pos);
pos = size;
break;
}
}
is_ok = true;
}
