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Now only those Ca descriptors are sent to a CAM that are actually understood by that CAM

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This commit is contained in:
Klaus Schmidinger 2003-04-18 12:48:49 +02:00
parent b57eae00d3
commit 78d85cee06
6 changed files with 81 additions and 58 deletions
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2
HISTORY
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@ -2039,3 +2039,5 @@ Video Disk Recorder Revision History
- Using masks in EIT filtering to reduce the number of filters (thanks to Andreas
Schultz).
- Fixed handling Ca descriptors (thanks to Stefan Huelswitt).
- Now only those Ca descriptors are sent to a CAM that are actually understood
by that CAM.

41
ci.c
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@ -4,7 +4,7 @@
* See the main source file 'vdr.c' for copyright information and
* how to reach the author.
*
* $Id: ci.c 1.9 2003/03/23 15:18:40 kls Exp $
* $Id: ci.c 1.10 2003/04/18 12:48:49 kls Exp $
*/
/* XXX TODO
@ -769,7 +769,7 @@ public:
cCiApplicationInformation::cCiApplicationInformation(int SessionId, cCiTransportConnection *Tc)
:cCiSession(SessionId, RI_APPLICATION_INFORMATION, Tc)
{
dbgprotocol("New Aplication Information (session id %d)\n", SessionId);
dbgprotocol("New Application Information (session id %d)\n", SessionId);
state = 0;
creationTime = time(NULL);
menuString = NULL;
@ -827,12 +827,17 @@ bool cCiApplicationInformation::EnterMenu(void)
// --- cCiConditionalAccessSupport -------------------------------------------
#define MAXCASYSTEMIDS 16
class cCiConditionalAccessSupport : public cCiSession {
private:
int state;
int numCaSystemIds;
unsigned short caSystemIds[MAXCASYSTEMIDS + 1]; // list is zero terminated!
public:
cCiConditionalAccessSupport(int SessionId, cCiTransportConnection *Tc);
virtual bool Process(int Length = 0, const uint8_t *Data = NULL);
const unsigned short *GetCaSystemIds(void) { return caSystemIds; }
bool SendPMT(cCiCaPmt &CaPmt);
};
@ -841,6 +846,7 @@ cCiConditionalAccessSupport::cCiConditionalAccessSupport(int SessionId, cCiTrans
{
dbgprotocol("New Conditional Access Support (session id %d)\n", SessionId);
state = 0;
caSystemIds[numCaSystemIds = 0] = 0;
}
bool cCiConditionalAccessSupport::Process(int Length, const uint8_t *Data)
@ -853,9 +859,16 @@ bool cCiConditionalAccessSupport::Process(int Length, const uint8_t *Data)
int l = 0;
const uint8_t *d = GetData(Data, l);
while (l > 1) {
dbgprotocol(" %04X", ((unsigned int)(*d) << 8) | *(d + 1));
unsigned short id = ((unsigned short)(*d) << 8) | *(d + 1);
dbgprotocol(" %04X", id);
d += 2;
l -= 2;
if (numCaSystemIds < MAXCASYSTEMIDS) {
caSystemIds[numCaSystemIds++] = id;
caSystemIds[numCaSystemIds] = 0;
}
else
esyslog("ERROR: too many CA system IDs!");
}
dbgprotocol("\n");
}
@ -1274,6 +1287,7 @@ cCiHandler::cCiHandler(int Fd, int NumSlots)
{
numSlots = NumSlots;
enabled = true;
newCaSupport = false;
for (int i = 0; i < MAX_CI_SESSION; i++)
sessions[i] = NULL;
tpl = new cCiTransportLayer(Fd, numSlots);
@ -1358,7 +1372,8 @@ cCiSession *cCiHandler::CreateSession(int ResourceId)
switch (ResourceId) {
case RI_RESOURCE_MANAGER: return sessions[i] = new cCiResourceManager(i + 1, tc);
case RI_APPLICATION_INFORMATION: return sessions[i] = new cCiApplicationInformation(i + 1, tc);
case RI_CONDITIONAL_ACCESS_SUPPORT: return sessions[i] = new cCiConditionalAccessSupport(i + 1, tc);
case RI_CONDITIONAL_ACCESS_SUPPORT: newCaSupport = true;
return sessions[i] = new cCiConditionalAccessSupport(i + 1, tc);
case RI_HOST_CONTROL: break; //XXX
case RI_DATE_TIME: return sessions[i] = new cCiDateTime(i + 1, tc);
case RI_MMI: return sessions[i] = new cCiMMI(i + 1, tc);
@ -1470,6 +1485,8 @@ bool cCiHandler::Process(void)
if (sessions[i])
sessions[i]->Process();
}
if (newCaSupport)
newCaSupport = result = false; // triggers new SetCaPmt at caller!
return result;
}
@ -1502,16 +1519,18 @@ cCiEnquiry *cCiHandler::GetEnquiry(void)
return NULL;
}
bool cCiHandler::SetCaPmt(cCiCaPmt &CaPmt)
const unsigned short *cCiHandler::GetCaSystemIds(int Slot)
{
cMutexLock MutexLock(&mutex);
bool result = false;
for (int Slot = 0; Slot < numSlots; Slot++) {
cCiConditionalAccessSupport *cas = (cCiConditionalAccessSupport *)GetSessionByResourceId(RI_CONDITIONAL_ACCESS_SUPPORT, Slot);
if (cas)
result |= cas->SendPMT(CaPmt);
}
return result;
return cas ? cas->GetCaSystemIds() : NULL;
}
bool cCiHandler::SetCaPmt(cCiCaPmt &CaPmt, int Slot)
{
cMutexLock MutexLock(&mutex);
cCiConditionalAccessSupport *cas = (cCiConditionalAccessSupport *)GetSessionByResourceId(RI_CONDITIONAL_ACCESS_SUPPORT, Slot);
return cas && cas->SendPMT(CaPmt);
}
bool cCiHandler::Reset(int Slot)

7
ci.h
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@ -4,7 +4,7 @@
* See the main source file 'vdr.c' for copyright information and
* how to reach the author.
*
* $Id: ci.h 1.4 2003/03/23 15:18:40 kls Exp $
* $Id: ci.h 1.5 2003/04/18 12:41:48 kls Exp $
*/
#ifndef __CI_H
@ -81,6 +81,7 @@ private:
cMutex mutex;
int numSlots;
bool enabled;
bool newCaSupport;
cCiSession *sessions[MAX_CI_SESSION];
cCiTransportLayer *tpl;
cCiTransportConnection *tc;
@ -96,12 +97,14 @@ private:
public:
~cCiHandler();
static cCiHandler *CreateCiHandler(const char *FileName);
int NumSlots(void) { return numSlots; }
void SetEnabled(bool Enabled) { enabled = Enabled; }
bool Process(void);
bool EnterMenu(int Slot);
cCiMenu *GetMenu(void);
cCiEnquiry *GetEnquiry(void);
bool SetCaPmt(cCiCaPmt &CaPmt);
const unsigned short *GetCaSystemIds(int Slot);
bool SetCaPmt(cCiCaPmt &CaPmt, int Slot);
bool Reset(int Slot);
};

10
dvbdevice.c
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@ -4,7 +4,7 @@
* See the main source file 'vdr.c' for copyright information and
* how to reach the author.
*
* $Id: dvbdevice.c 1.51 2003/04/12 15:06:11 kls Exp $
* $Id: dvbdevice.c 1.52 2003/04/18 11:35:08 kls Exp $
*/
#include "dvbdevice.h"
@ -264,11 +264,12 @@ void cDvbTuner::Action(void)
}
}
if (tunerStatus >= tsLocked) {
if (ciHandler && channel.Ca()) {
if (ciHandler && channel.Ca() > CACONFBASE) {
if (ciHandler->Process()) {
if (tunerStatus != tsCam) {//XXX TODO update in case the CA descriptors have changed
for (int Slot = 0; Slot < ciHandler->NumSlots(); Slot++) {
uchar buffer[2048];
int length = cSIProcessor::GetCaDescriptors(channel.Source(), channel.Frequency(), channel.Sid(), sizeof(buffer), buffer);
int length = cSIProcessor::GetCaDescriptors(channel.Source(), channel.Frequency(), channel.Sid(), ciHandler->GetCaSystemIds(Slot), sizeof(buffer), buffer);
if (length > 0) {
cCiCaPmt CaPmt(channel.Sid());
CaPmt.AddCaDescriptor(length, buffer);
@ -280,13 +281,14 @@ void cDvbTuner::Action(void)
CaPmt.AddPid(channel.Apid2());
if (channel.Dpid1())
CaPmt.AddPid(channel.Dpid1());
if (ciHandler->SetCaPmt(CaPmt)) {
if (ciHandler->SetCaPmt(CaPmt, Slot)) {
tunerStatus = tsCam;
startTime = 0;
}
}
}
}
}
else
tunerStatus = tsLocked;
}

20
eit.c
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@ -16,7 +16,7 @@
* the Free Software Foundation; either version 2 of the License, or *
* (at your option) any later version. *
* *
* $Id: eit.c 1.70 2003/04/18 11:29:11 kls Exp $
* $Id: eit.c 1.71 2003/04/18 11:30:42 kls Exp $
***************************************************************************/
#include "eit.h"
@ -1059,12 +1059,8 @@ public:
const cCaDescriptor *cCaDescriptors::Get(int Source, int Transponder, int ServiceId, int CaSystem)
{
for (cCaDescriptor *ca = First(); ca; ca = Next(ca)) {
if (ca->source == Source && ca->transponder == Transponder && ca->serviceId == ServiceId) {
if (CaSystem == -1 || ca->caSystem == CaSystem)
if (ca->source == Source && ca->transponder == Transponder && ca->serviceId == ServiceId && ca->caSystem == CaSystem)
return ca;
if (CaSystem < 0)
CaSystem++;
}
}
return NULL;
}
@ -1452,13 +1448,15 @@ void cSIProcessor::NewCaDescriptor(struct Descriptor *d, int ProgramID)
}
}
int cSIProcessor::GetCaDescriptors(int Source, int Transponder, int ServiceId, int BufSize, uchar *Data)
int cSIProcessor::GetCaDescriptors(int Source, int Transponder, int ServiceId, const unsigned short *CaSystemIds, int BufSize, uchar *Data)
{
if (!CaSystemIds || !*CaSystemIds)
return 0;
if (BufSize > 0 && Data) {
cMutexLock MutexLock(&caDescriptorsMutex);
int length = 0;
for (int i = -1; ; i--) {
const cCaDescriptor *d = caDescriptors->Get(Source, Transponder, ServiceId, i);
do {
const cCaDescriptor *d = caDescriptors->Get(Source, Transponder, ServiceId, *CaSystemIds);
if (d) {
if (length + d->Length() <= BufSize) {
memcpy(Data + length, d->Data(), d->Length());
@ -1467,9 +1465,7 @@ int cSIProcessor::GetCaDescriptors(int Source, int Transponder, int ServiceId, i
else
return -1;
}
else
break;
}
} while (*++CaSystemIds);
return length;
}
return -1;

7
eit.h
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@ -16,7 +16,7 @@
* the Free Software Foundation; either version 2 of the License, or *
* (at your option) any later version. *
* *
* $Id: eit.h 1.26 2003/04/13 14:01:24 kls Exp $
* $Id: eit.h 1.27 2003/04/18 11:30:42 kls Exp $
***************************************************************************/
#ifndef __EIT_H
@ -168,10 +168,11 @@ public:
// Caller must provide a cMutexLock which has to survive the entire
// time the returned cSchedules is accessed. Once the cSchedules is no
// longer used, the cMutexLock must be destroyed.
static int GetCaDescriptors(int Source, int Transponder, int ServiceId, int BufSize, uchar *Data);
static int GetCaDescriptors(int Source, int Transponder, int ServiceId, const unsigned short *CaSystemIds, int BufSize, uchar *Data);
///< Gets all CA descriptors for a given channel.
///< Copies all available CA descriptors for the given Source, Transponder and ServiceId
///< into the provided buffer at Data (at most BufSize bytes).
///< into the provided buffer at Data (at most BufSize bytes). Only those CA descriptors
///< are copied that match one of the given CA system IDs.
///< \return Returns the number of bytes copied into Data (0 if no CA descriptors are
///< available), or -1 if BufSize was too small to hold all CA descriptors.
static bool Read(FILE *f = NULL);