server_ts-pat-pmt-filter.patch by Petri Hintukainen

- Add PAT, PMT and PCR to HTTP TS streams
- Dynamically add and remove all related pids (of channel) to TS stream
 -> DVB/teletect subtitles work in clients
 -> VLC can be used as client
 -> HDTV (MPEG4 / H.264) streaming is possible
 -> Client can select audio and subtitle tracks on the fly without re-connection -> Client can display "real" track names / languages

 - Add new member function to set all pids in one shot
  -> Receiver is not deleted, created and re-attached separately for every pid
   (this causes discontinous start and is anyway unnecessarily)

Modified Files:
	server/livestreamer.c server/livestreamer.h
This commit is contained in:
schmirl 2007-04-24 11:13:05 +00:00
parent 2e7fe3c337
commit 52bf110aa9
2 changed files with 315 additions and 40 deletions

View File

@ -1,3 +1,8 @@
#include <assert.h>
#include <libsi/section.h>
#include <libsi/descriptor.h>
#include <vdr/ringbuffer.h>
#include "server/livestreamer.h"
@ -58,6 +63,221 @@ inline void cStreamdevLiveReceiver::Activate(bool On)
m_Streamer->Activate(On);
}
// --- cStreamdevPatFilter ----------------------------------------------------
class cStreamdevPatFilter : public cFilter {
private:
int pmtPid;
int pmtSid;
int pmtVersion;
const cChannel *m_Channel;
cStreamdevLiveStreamer *m_Streamer;
virtual void Process(u_short Pid, u_char Tid, const u_char *Data, int Length);
int GetPid(SI::PMT::Stream& stream);
public:
cStreamdevPatFilter(cStreamdevLiveStreamer *Streamer, const cChannel *Channel);
};
cStreamdevPatFilter::cStreamdevPatFilter(cStreamdevLiveStreamer *Streamer, const cChannel *Channel)
{
Dprintf("cStreamdevPatFilter(\"%s\")", Channel->Name());
assert(Streamer);
m_Channel = Channel;
m_Streamer = Streamer;
pmtPid = 0;
pmtSid = 0;
pmtVersion = -1;
Set(0x00, 0x00); // PAT
}
static const char * const psStreamTypes[] = {
"UNKNOWN",
"ISO/IEC 11172 Video",
"ISO/IEC 13818-2 Video",
"ISO/IEC 11172 Audio",
"ISO/IEC 13818-3 Audio",
"ISO/IEC 13818-1 Privete sections",
"ISO/IEC 13818-1 Private PES data",
"ISO/IEC 13512 MHEG",
"ISO/IEC 13818-1 Annex A DSM CC",
"0x09",
"ISO/IEC 13818-6 Multiprotocol encapsulation",
"ISO/IEC 13818-6 DSM-CC U-N Messages",
"ISO/IEC 13818-6 Stream Descriptors",
"ISO/IEC 13818-6 Sections (any type, including private data)",
"ISO/IEC 13818-1 auxiliary",
"ISO/IEC 13818-7 Audio with ADTS transport sytax",
"ISO/IEC 14496-2 Visual (MPEG-4)",
"ISO/IEC 14496-3 Audio with LATM transport syntax",
"0x12", "0x13", "0x14", "0x15", "0x16", "0x17", "0x18", "0x19", "0x1a",
"ISO/IEC 14496-10 Video (MPEG-4 part 10/AVC, aka H.264)",
"",
};
int cStreamdevPatFilter::GetPid(SI::PMT::Stream& stream)
{
SI::Descriptor *d;
if (!stream.getPid())
return 0;
switch (stream.getStreamType()) {
case 0x01: // ISO/IEC 11172 Video
case 0x02: // ISO/IEC 13818-2 Video
case 0x03: // ISO/IEC 11172 Audio
case 0x04: // ISO/IEC 13818-3 Audio
#if 0
case 0x07: // ISO/IEC 13512 MHEG
case 0x08: // ISO/IEC 13818-1 Annex A DSM CC
case 0x0a: // ISO/IEC 13818-6 Multiprotocol encapsulation
case 0x0b: // ISO/IEC 13818-6 DSM-CC U-N Messages
case 0x0c: // ISO/IEC 13818-6 Stream Descriptors
case 0x0d: // ISO/IEC 13818-6 Sections (any type, including private data)
case 0x0e: // ISO/IEC 13818-1 auxiliary
#endif
case 0x0f: // ISO/IEC 13818-7 Audio with ADTS transport syntax
case 0x10: // ISO/IEC 14496-2 Visual (MPEG-4)
case 0x11: // ISO/IEC 14496-3 Audio with LATM transport syntax
case 0x1b: // ISO/IEC 14496-10 Video (MPEG-4 part 10/AVC, aka H.264)
Dprintf("cStreamdevPatFilter PMT scanner adding PID %d (%s)",
stream.getPid(), psStreamTypes[stream.getStreamType()]);
return stream.getPid();
case 0x05: // ISO/IEC 13818-1 private sections
case 0x06: // ISO/IEC 13818-1 PES packets containing private data
for (SI::Loop::Iterator it; (d = stream.streamDescriptors.getNext(it)); ) {
switch (d->getDescriptorTag()) {
case SI::AC3DescriptorTag:
Dprintf("cStreamdevPatFilter PMT scanner: adding PID %d (%s) %s",
stream.getPid(), psStreamTypes[stream.getStreamType()], "AC3");
return stream.getPid();
case SI::TeletextDescriptorTag:
Dprintf("cStreamdevPatFilter PMT scanner: adding PID %d (%s) %s",
stream.getPid(), psStreamTypes[stream.getStreamType()], "Teletext");
return stream.getPid();
case SI::SubtitlingDescriptorTag:
Dprintf("cStreamdevPatFilter PMT scanner: adding PID %d (%s) %s",
stream.getPid(), psStreamTypes[stream.getStreamType()], "DVBSUB");
return stream.getPid();
default:
Dprintf("cStreamdevPatFilter PMT scanner: NOT adding PID %d (%s) %s",
stream.getPid(), psStreamTypes[stream.getStreamType()], "UNKNOWN");
break;
}
delete d;
}
break;
default:
/* This following section handles all the cases where the audio track
* info is stored in PMT user info with stream id >= 0x80
* we check the registration format identifier to see if it
* holds "AC-3"
*/
if (stream.getStreamType() >= 0x80) {
bool found = false;
for (SI::Loop::Iterator it; (d = stream.streamDescriptors.getNext(it)); ) {
switch (d->getDescriptorTag()) {
case SI::RegistrationDescriptorTag:
/* unfortunately libsi does not implement RegistrationDescriptor */
if (d->getLength() >= 4) {
found = true;
SI::CharArray rawdata = d->getData();
if (/*rawdata[0] == 5 && rawdata[1] >= 4 && */
rawdata[2] == 'A' && rawdata[3] == 'C' &&
rawdata[4] == '-' && rawdata[5] == '3') {
isyslog("cStreamdevPatFilter PMT scanner:"
"Adding pid %d (type 0x%x) RegDesc len %d (%c%c%c%c)",
stream.getPid(), stream.getStreamType(),
d->getLength(), rawdata[2], rawdata[3],
rawdata[4], rawdata[5]);
return stream.getPid();
}
}
break;
default:
break;
}
delete d;
}
if(!found) {
isyslog("Adding pid %d (type 0x%x) RegDesc not found -> assume AC-3",
stream.getPid(), stream.getStreamType());
return stream.getPid();
}
}
Dprintf("cStreamdevPatFilter PMT scanner: NOT adding PID %d (%s) %s",
stream.getPid(), psStreamTypes[stream.getStreamType()<0x1c?stream.getStreamType():0], "UNKNOWN");
break;
}
return 0;
}
void cStreamdevPatFilter::Process(u_short Pid, u_char Tid, const u_char *Data, int Length)
{
if (Pid == 0x00) {
if (Tid == 0x00 && !pmtPid) {
SI::PAT pat(Data, false);
if (!pat.CheckCRCAndParse())
return;
SI::PAT::Association assoc;
for (SI::Loop::Iterator it; pat.associationLoop.getNext(assoc, it); ) {
if (!assoc.isNITPid()) {
const cChannel *Channel = Channels.GetByServiceID(Source(), Transponder(), assoc.getServiceId());
if (Channel && (Channel == m_Channel)) {
if (0 != (pmtPid = assoc.getPid())) {
Dprintf("cStreamdevPatFilter: PMT pid for channel %s: %d", Channel->Name(), pmtPid);
pmtSid = assoc.getServiceId();
if (Length < TS_SIZE-5) {
// repack PAT to TS frame and send to client
uint8_t pat_ts[TS_SIZE] = {TS_SYNC_BYTE, 0x40 /* pusi=1 */, 0 /* pid=0 */, 0x10 /* adaption=1 */, 0 /* pointer */};
memcpy(pat_ts + 5, Data, Length);
m_Streamer->Put(pat_ts, TS_SIZE);
} else
isyslog("cStreamdevPatFilter: PAT size %d too large to fit in one TS", Length);
m_Streamer->SetPids(pmtPid);
Add(pmtPid, 0x02);
pmtVersion = -1;
return;
}
}
}
}
}
} else if (Pid == pmtPid && Tid == SI::TableIdPMT && Source() && Transponder()) {
SI::PMT pmt(Data, false);
if (!pmt.CheckCRCAndParse())
return;
if (pmt.getServiceId() != pmtSid)
return; // skip broken PMT records
if (pmtVersion != -1) {
if (pmtVersion != pmt.getVersionNumber()) {
Dprintf("cStreamdevPatFilter: PMT version changed, detaching all pids");
Del(pmtPid, 0x02);
pmtPid = 0; // this triggers PAT scan
}
return;
}
pmtVersion = pmt.getVersionNumber();
SI::PMT::Stream stream;
int pids[MAXRECEIVEPIDS + 1], npids = 0;
pids[npids++] = pmtPid;
#if 0
pids[npids++] = 0x10; // pid 0x10, tid 0x40: NIT
pids[npids++] = 0x11; // pid 0x11, tid 0x42: SDT
pids[npids++] = 0x12; // pid 0x12, tid 0x4E...0x6F: EIT
pids[npids++] = 0x14; // pid 0x14, tid 0x70: TDT
#endif
for (SI::Loop::Iterator it; pmt.streamLoop.getNext(stream, it); )
if (0 != (pids[npids] = GetPid(stream)) && npids < MAXRECEIVEPIDS)
npids++;
pids[npids] = 0;
m_Streamer->SetPids(pmt.getPCRPid(), pids);
}
}
// --- cStreamdevLiveStreamer -------------------------------------------------
@ -69,6 +289,7 @@ cStreamdevLiveStreamer::cStreamdevLiveStreamer(int Priority):
m_Channel(NULL),
m_Device(NULL),
m_Receiver(NULL),
m_PatFilter(NULL),
m_PESRemux(NULL),
m_ESRemux(NULL),
m_PSRemux(NULL),
@ -80,14 +301,24 @@ cStreamdevLiveStreamer::~cStreamdevLiveStreamer()
{
Dprintf("Desctructing Live streamer\n");
Stop();
delete m_Receiver;
if(m_PatFilter) {
Detach();
DELETENULL(m_PatFilter);
}
DELETENULL(m_Receiver);
delete m_PESRemux;
delete m_ESRemux;
delete m_PSRemux;
delete m_ExtRemux;
#if VDRVERSNUM >= 10300
//delete m_Filter; TODO
#endif
}
bool cStreamdevLiveStreamer::HasPid(int Pid)
{
int idx;
for (idx = 0; idx < m_NumPids; ++idx)
if (m_Pids[idx] == Pid)
return true;
return false;
}
bool cStreamdevLiveStreamer::SetPid(int Pid, bool On)
@ -119,6 +350,44 @@ bool cStreamdevLiveStreamer::SetPid(int Pid, bool On)
}
}
StartReceiver();
return true;
}
bool cStreamdevLiveStreamer::SetPids(int Pid, const int *Pids1, const int *Pids2, const int *Pids3)
{
m_NumPids = 0;
if (Pid)
m_Pids[m_NumPids++] = Pid;
if (Pids1)
for ( ; *Pids1 && m_NumPids < MAXRECEIVEPIDS; Pids1++)
if (!HasPid(*Pids1))
m_Pids[m_NumPids++] = *Pids1;
if (Pids2)
for ( ; *Pids2 && m_NumPids < MAXRECEIVEPIDS; Pids2++)
if (!HasPid(*Pids2))
m_Pids[m_NumPids++] = *Pids2;
if (Pids3)
for ( ; *Pids3 && m_NumPids < MAXRECEIVEPIDS; Pids3++)
if (!HasPid(*Pids3))
m_Pids[m_NumPids++] = *Pids3;
if (m_NumPids >= MAXRECEIVEPIDS) {
esyslog("ERROR: Streamdev: No free slot to receive pid %d\n", Pid);
return false;
}
m_Pids[m_NumPids] = 0;
StartReceiver();
return true;
}
void cStreamdevLiveStreamer::StartReceiver(void)
{
DELETENULL(m_Receiver);
if (m_NumPids > 0) {
Dprintf("Creating Receiver to respect changed pids\n");
@ -132,15 +401,19 @@ bool cStreamdevLiveStreamer::SetPid(int Pid, bool On)
Attach();
}
}
return true;
}
bool cStreamdevLiveStreamer::SetChannel(const cChannel *Channel, eStreamType StreamType, int Apid)
{
Dprintf("Initializing Remuxer for full channel transfer\n");
printf("ca pid: %d\n", Channel->Ca());
//printf("ca pid: %d\n", Channel->Ca());
m_Channel = Channel;
m_StreamType = StreamType;
int apid[2] = { Apid, 0 };
const int *Apids = Apid ? apid : m_Channel->Apids();
const int *Dpids = Apid ? NULL : m_Channel->Dpids();
switch (m_StreamType) {
case stES:
{
@ -148,51 +421,33 @@ bool cStreamdevLiveStreamer::SetChannel(const cChannel *Channel, eStreamType Str
if (Apid != 0)
pid = Apid;
m_ESRemux = new cTS2ESRemux(pid);
return SetPid(pid, true);
return SetPids(pid);
}
case stPES:
Dprintf("PES\n");
m_PESRemux = new cRemux(m_Channel->Vpid(), m_Channel->Apids(), m_Channel->Dpids(),
m_Channel->Spids(), false);
if (Apid != 0)
return SetPid(m_Channel->Vpid(), true)
&& SetPid(Apid, true);
else
return SetPid(m_Channel->Vpid(), true)
&& SetPid(m_Channel->Apid(0), true)
&& SetPid(m_Channel->Dpid(0), true);
return SetPids(m_Channel->Vpid(), Apids, Dpids, m_Channel->Spids());
case stPS:
m_PSRemux = new cTS2PSRemux(m_Channel->Vpid(), m_Channel->Apids(), m_Channel->Dpids(),
m_Channel->Spids());
if (Apid != 0)
return SetPid(m_Channel->Vpid(), true)
&& SetPid(Apid, true);
else
return SetPid(m_Channel->Vpid(), true)
&& SetPid(m_Channel->Apid(0), true)
&& SetPid(m_Channel->Dpid(0), true);
return SetPids(m_Channel->Vpid(), Apids, Dpids, m_Channel->Spids());
case stTS:
if (Apid != 0)
return SetPid(m_Channel->Vpid(), true)
&& SetPid(Apid, true);
else
return SetPid(m_Channel->Vpid(), true)
&& SetPid(m_Channel->Apid(0), true)
&& SetPid(m_Channel->Dpid(0), true);
// This should never happen, but ...
if (m_PatFilter) {
Detach();
DELETENULL(m_PatFilter);
}
// Set pids from PMT
m_PatFilter = new cStreamdevPatFilter(this, m_Channel);
return true;
case stExtern:
m_ExtRemux = new cExternRemux(m_Channel->Vpid(), m_Channel->Apids(), m_Channel->Dpids(),
m_Channel->Spids());
if (Apid != 0)
return SetPid(m_Channel->Vpid(), true)
&& SetPid(Apid, true);
else
return SetPid(m_Channel->Vpid(), true)
&& SetPid(m_Channel->Apid(0), true)
&& SetPid(m_Channel->Dpid(0), true);
return SetPids(m_Channel->Vpid(), Apids, Dpids, m_Channel->Spids());
case stTSPIDS:
Dprintf("pid streaming mode\n");
@ -296,14 +551,28 @@ void cStreamdevLiveStreamer::Del(int Count)
void cStreamdevLiveStreamer::Attach(void)
{
printf("RIGHT ATTACH\n");
Dprintf("cStreamdevLiveStreamer::Attach()\n");
if (m_Device) {
if (m_Receiver) {
m_Device->Detach(m_Receiver);
m_Device->AttachReceiver(m_Receiver);
}
if (m_PatFilter) {
m_Device->Detach(m_PatFilter);
m_Device->AttachFilter(m_PatFilter);
}
}
}
void cStreamdevLiveStreamer::Detach(void)
{
printf("RIGHT DETACH\n");
Dprintf("cStreamdevLiveStreamer::Detach()\n");
if (m_Device) {
if (m_Receiver)
m_Device->Detach(m_Receiver);
if (m_PatFilter)
m_Device->Detach(m_PatFilter);
}
}
std::string cStreamdevLiveStreamer::Report(void)

View File

@ -12,6 +12,7 @@ class cTS2PSRemux;
class cTS2ESRemux;
class cExternRemux;
class cRemux;
class cStreamdevPatFilter;
class cStreamdevLiveReceiver;
// --- cStreamdevLiveStreamer -------------------------------------------------
@ -25,17 +26,22 @@ private:
const cChannel *m_Channel;
cDevice *m_Device;
cStreamdevLiveReceiver *m_Receiver;
cStreamdevPatFilter *m_PatFilter;
cRemux *m_PESRemux;
cTS2ESRemux *m_ESRemux;
cTS2PSRemux *m_PSRemux;
cExternRemux *m_ExtRemux;
void StartReceiver(void);
bool HasPid(int Pid);
public:
cStreamdevLiveStreamer(int Priority);
virtual ~cStreamdevLiveStreamer();
void SetDevice(cDevice *Device) { m_Device = Device; }
bool SetPid(int Pid, bool On);
bool SetPids(int Pid, const int *Pids1 = NULL, const int *Pids2 = NULL, const int *Pids3 = NULL);
bool SetChannel(const cChannel *Channel, eStreamType StreamType, int Apid = 0);
bool SetFilter(u_short Pid, u_char Tid, u_char Mask, bool On);