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Implement detection of audio or video-only channel pids.

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This commit is contained in:
Antti Seppälä
2008-02-02 20:23:44 +00:00
parent 3fe71ae011
commit 55440bf047
1 changed files with 29 additions and 7 deletions
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36
pidscanner.c
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@@ -3,13 +3,16 @@
* *
* See the README file for copyright information and how to reach the author. * See the README file for copyright information and how to reach the author.
* *
* $Id: pidscanner.c,v 1.3 2008/02/01 21:58:22 rahrenbe Exp $ * $Id: pidscanner.c,v 1.4 2008/02/02 20:23:44 ajhseppa Exp $
*/ */
#include "common.h" #include "common.h"
#include "pidscanner.h" #include "pidscanner.h"
#define PIDSCANNER_TIMEOUT_IN_MS 60000 /* 60s */ #define PIDSCANNER_TIMEOUT_IN_MS 60000 /* 60s */
#define NR_APIDS 5
#define NR_VPIDS 10
#define NR_PID_DELTA 50
cPidScanner::cPidScanner(void) cPidScanner::cPidScanner(void)
: timeout(0), : timeout(0),
@@ -35,8 +38,10 @@ void cPidScanner::Process(const uint8_t* buf)
return; return;
// Stop scanning after defined timeout // Stop scanning after defined timeout
if (timeout.TimedOut()) if (timeout.TimedOut()) {
debug("cPidScanner::Process: Timed out determining pids\n");
process = false; process = false;
}
if (buf[0] != 0x47) { if (buf[0] != 0x47) {
error("Not TS packet: 0x%X\n", buf[0]); error("Not TS packet: 0x%X\n", buf[0]);
@@ -68,27 +73,36 @@ void cPidScanner::Process(const uint8_t* buf)
// Stream ID // Stream ID
if ((sid >= 0xC0) && (sid <= 0xDF)) { if ((sid >= 0xC0) && (sid <= 0xDF)) {
if (pid < Apid) { if (pid < Apid) {
debug("Found lower Apid: 0x%X instead of 0x%X\n", pid, Apid);
Apid = pid; Apid = pid;
numApids = 1; numApids = 1;
} }
else if (pid == Apid) else if (pid == Apid) {
++numApids; ++numApids;
debug("Incrementing Apids, now at %d\n", numApids);
}
} }
else if ((sid >= 0xE0) && (sid <= 0xEF)) { else if ((sid >= 0xE0) && (sid <= 0xEF)) {
if (pid < Vpid) { if (pid < Vpid) {
debug("Found lower Vpid: 0x%X instead of 0x%X\n", pid, Vpid);
Vpid = pid; Vpid = pid;
numVpids = 1; numVpids = 1;
} }
else if (pid == Vpid) else if (pid == Vpid) {
++numVpids; ++numVpids;
debug("Incrementing Vpids, now at %d\n", numVpids);
}
} }
} }
if (numVpids > 10 && numApids > 5) { if ((numVpids > NR_VPIDS && numApids > NR_APIDS) ||
abs(numApids - numVpids) > NR_PID_DELTA) {
if (!Channels.Lock(true, 10)) { if (!Channels.Lock(true, 10)) {
timeout.Set(PIDSCANNER_TIMEOUT_IN_MS); timeout.Set(PIDSCANNER_TIMEOUT_IN_MS);
return; return;
} }
debug("cPidScanner::Process(): Vpid=0x%04X, Apid=0x%04X\n", Vpid, Apid); debug("cPidScanner::Process(): Vpid=0x%04X, Apid=0x%04X\n", Vpid,
Apid);
cChannel *IptvChannel = Channels.GetByChannelID(channel.GetChannelID()); cChannel *IptvChannel = Channels.GetByChannelID(channel.GetChannelID());
int Apids[MAXAPIDS + 1] = { 0 }; // these lists are zero-terminated int Apids[MAXAPIDS + 1] = { 0 }; // these lists are zero-terminated
int Dpids[MAXDPIDS + 1] = { 0 }; int Dpids[MAXDPIDS + 1] = { 0 };
@@ -105,9 +119,17 @@ void cPidScanner::Process(const uint8_t* buf)
Dpids[i] = IptvChannel->Dpid(i); Dpids[i] = IptvChannel->Dpid(i);
for (unsigned int i = 0; i < MAXSPIDS; ++i) for (unsigned int i = 0; i < MAXSPIDS; ++i)
Spids[i] = IptvChannel->Spid(i); Spids[i] = IptvChannel->Spid(i);
if (numVpids <= NR_VPIDS) {
// No detected video pid, set zero.
Vpid = 0;
}
else if (numApids <= NR_APIDS) {
// Channel with no detected audio pid. Set zero.
Apids[0] = 0;
}
IptvChannel->SetPids(Vpid, Ppid, Apids, ALangs, Dpids, DLangs, Spids, SLangs, Tpid); IptvChannel->SetPids(Vpid, Ppid, Apids, ALangs, Dpids, DLangs, Spids, SLangs, Tpid);
Channels.Unlock(); Channels.Unlock();
process = false; process = false;
} }
} }
} }