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authorKlaus Schmidinger <vdr@tvdr.de>2002-03-03 16:12:29 +0100
committerKlaus Schmidinger <vdr@tvdr.de>2002-03-03 16:12:29 +0100
commit9d4456a0a3dc65ee03baaa2fda8f8e0348664997 (patch)
tree365528c26bbc6d4f10b84c455329faa221de5457 /dvbapi.c
parent9f5397b51006f7918c07217b98e91ced547eb6f6 (diff)
downloadvdr-9d4456a0a3dc65ee03baaa2fda8f8e0348664997.tar.gz
vdr-9d4456a0a3dc65ee03baaa2fda8f8e0348664997.tar.bz2
CICAM setup for conditional access channels
Diffstat (limited to 'dvbapi.c')
-rw-r--r--dvbapi.c124
1 files changed, 93 insertions, 31 deletions
diff --git a/dvbapi.c b/dvbapi.c
index c55142e1..2f1ca145 100644
--- a/dvbapi.c
+++ b/dvbapi.c
@@ -4,7 +4,7 @@
* See the main source file 'vdr.c' for copyright information and
* how to reach the author.
*
- * $Id: dvbapi.c 1.153 2002/03/02 09:37:56 kls Exp $
+ * $Id: dvbapi.c 1.154 2002/03/03 15:43:24 kls Exp $
*/
#include "dvbapi.h"
@@ -1684,9 +1684,10 @@ cDvbApi::cDvbApi(int n)
replayBuffer = NULL;
transferBuffer = NULL;
transferringFromDvbApi = NULL;
- ca = 0;
+ ca = -1;
priority = -1;
cardIndex = n;
+ SetCaCaps();
// Devices that are only present on DVB-C or DVB-S cards:
@@ -1783,37 +1784,93 @@ bool cDvbApi::SetPrimaryDvbApi(int n)
return false;
}
+int cDvbApi::CanShift(int Ca, int Priority)
+{
+ // Test whether a recording on this DVB device can be shifted to another one
+ // in order to perform a new recording with the given Ca and Priority on this device:
+ int ShiftLevel = -1; // default means this device can't be shifted
+ if (Recording()) {
+ if (ProvidesCa(Ca) // this device provides the requested Ca
+ && (Ca != this->Ca() // the requested Ca is different from the one currently used...
+ || Priority > this->Priority())) { // ...or the request comes from a higher priority
+ cDvbApi *d = NULL;
+ int Provides[MAXDVBAPI];
+ for (int i = 0; i < NumDvbApis; i++) {
+ if ((Provides[i] = dvbApi[i]->ProvidesCa(this->Ca())) != 0) { // this device is basicly able to do the job
+ if (dvbApi[i] != this) { // it is not _this_ device
+ int sl = dvbApi[i]->CanShift(this->Ca(), Priority); // this is the original Priority!
+ if (sl >= 0 && (ShiftLevel < 0 || sl < ShiftLevel)) {
+ d = dvbApi[i];
+ ShiftLevel = sl;
+ }
+ }
+ }
+ }
+ if (ShiftLevel >= 0)
+ ShiftLevel++; // adds the device's own shift
+ }
+ }
+ else if (Priority > this->Priority())
+ ShiftLevel = 0; // no shifting necessary, this device can do the job
+ return ShiftLevel;
+}
+
cDvbApi *cDvbApi::GetDvbApi(int Ca, int Priority)
{
- cDvbApi *d = NULL, *dMinPriority = NULL;
- int index = Ca - 1;
- for (int i = 0; i < MAXDVBAPI; i++) {
- if (dvbApi[i]) {
- if (dvbApi[i]->CardIndex() == index) { // means we need exactly _this_ device
+ cDvbApi *d = NULL;
+ int Provides[MAXDVBAPI];
+ // Check which devices provide Ca:
+ for (int i = 0; i < NumDvbApis; i++) {
+ if ((Provides[i] = dvbApi[i]->ProvidesCa(Ca)) != 0) { // this device is basicly able to do the job
+ if (Priority > dvbApi[i]->Priority() // Priority is high enough to use this device
+ && (!d // we don't have a device yet, or...
+ || dvbApi[i]->Priority() < d->Priority() // ...this one has an even lower Priority
+ || (dvbApi[i]->Priority() == d->Priority() // ...same Priority...
+ && Provides[i] < Provides[d->CardIndex()]))) // ...but this one provides fewer Ca values
d = dvbApi[i];
- break;
- }
- else if (Ca == 0) { // means any device would be acceptable
- if (!d || !dvbApi[i]->Recording() || (d->Recording() && d->Priority() > dvbApi[i]->Priority()))
- d = dvbApi[i]; // this is one that is either not currently recording or has the lowest priority
- if (d && d != PrimaryDvbApi && !d->Recording()) // avoids the PrimaryDvbApi if possible
- break;
- if (d && d->Recording() && d->Priority() < Setup.PrimaryLimit && (!dMinPriority || d->Priority() < dMinPriority->Priority()))
- dMinPriority = d; // this is the one with the lowest priority below Setup.PrimaryLimit
- }
}
}
- if (d == PrimaryDvbApi) { // the PrimaryDvbApi was the only one that was free
- if (Priority < Setup.PrimaryLimit)
- return NULL; // not enough priority to use the PrimaryDvbApi
- if (dMinPriority) // there's one that must not use the PrimaryDvbApi...
- d = dMinPriority; // ...so let's kick out that one
+ if (!d && Ca > MAXDVBAPI) {
+ // We didn't find one the easy way, so now we have to try harder:
+ int ShiftLevel = -1;
+ for (int i = 0; i < NumDvbApis; i++) {
+ if (Provides[i]) { // this device is basicly able to do the job, but for some reason we didn't get it above
+ int sl = dvbApi[i]->CanShift(Ca, Priority); // asks this device to shift its job to another device
+ if (sl >= 0 && (ShiftLevel < 0 || sl < ShiftLevel)) {
+ d = dvbApi[i]; // found one that can be shifted with the fewest number of subsequent shifts
+ ShiftLevel = sl;
+ }
+ }
+ }
}
- return (d // we found one...
- && (!d->Recording() // ...that's either not currently recording...
- || d->Priority() < Priority // ...or has a lower priority...
- || (!d->Ca() && Ca))) // ...or doesn't need this card
- ? d : NULL;
+ return d;
+}
+
+void cDvbApi::SetCaCaps(void)
+{
+ for (int i = 0; i < MAXCACAPS; i++)
+ caCaps[i] = Setup.CaCaps[CardIndex()][i];
+}
+
+int cDvbApi::ProvidesCa(int Ca)
+{
+ if (Ca == CardIndex() + 1)
+ return 1; // exactly _this_ card was requested
+ if (Ca && Ca <= MAXDVBAPI)
+ return 0; // a specific card was requested, but not _this_ one
+ int result = Ca ? 0 : 1; // by default every card can provide FTA
+ int others = Ca ? 1 : 0;
+ for (int i = 0; i < MAXCACAPS; i++) {
+ if (caCaps[i]) {
+ if (caCaps[i] == Ca)
+ result = 1;
+ else
+ others++;
+ }
+ else
+ break;
+ }
+ return result ? result + others : 0;
}
bool cDvbApi::Probe(const char *FileName)
@@ -1854,7 +1911,7 @@ bool cDvbApi::Init(void)
void cDvbApi::Cleanup(void)
{
- for (int i = 0; i < MAXDVBAPI; i++) {
+ for (int i = 0; i < NumDvbApis; i++) {
delete dvbApi[i];
dvbApi[i] = NULL;
}
@@ -2148,6 +2205,11 @@ void cDvbApi::Flush(void)
#endif
}
+int cDvbApi::Priority(void)
+{
+ return (this == PrimaryDvbApi && !Recording()) ? Setup.PrimaryLimit - 1 : priority;
+}
+
int cDvbApi::SetModeRecord(void)
{
// Sets up the DVB device for recording
@@ -2262,7 +2324,7 @@ eSetChannelResult cDvbApi::SetChannel(int ChannelNumber, int Frequency, char Pol
// If this card can't receive this channel, we must not actually switch
// the channel here, because that would irritate the driver when we
// start replaying in Transfer Mode immediately after switching the channel:
- bool NeedsTransferMode = (this == PrimaryDvbApi && Ca && Ca != CardIndex() + 1);
+ bool NeedsTransferMode = (this == PrimaryDvbApi && !ProvidesCa(Ca));
if (!NeedsTransferMode) {
@@ -2504,7 +2566,7 @@ void cDvbApi::StopRecord(void)
if (recordBuffer) {
delete recordBuffer;
recordBuffer = NULL;
- ca = 0;
+ ca = -1;
priority = -1;
}
}
@@ -2703,7 +2765,7 @@ void cEITScanner::Process(void)
time_t now = time(NULL);
if (now - lastScan > ScanTimeout && now - lastActivity > ActivityTimeout) {
for (int i = 0; i < MAXDVBAPI; i++) {
- cDvbApi *DvbApi = cDvbApi::GetDvbApi(i + 1, MAXPRIORITY);
+ cDvbApi *DvbApi = cDvbApi::GetDvbApi(i + 1, MAXPRIORITY + 1);
if (DvbApi) {
if (DvbApi != cDvbApi::PrimaryDvbApi || (cDvbApi::NumDvbApis == 1 && Setup.EPGScanTimeout && now - lastActivity > Setup.EPGScanTimeout * 3600)) {
if (!(DvbApi->Recording() || DvbApi->Replaying() || DvbApi->Transferring())) {