[vdr] [ANNOUNCE] DVB-S2 + H.264 support for VDR-1.5.12
Gregoire Favre
gregoire.favre at gmail.com
Sun Jan 6 19:23:44 CET 2008
On Sat, Jan 05, 2008 at 06:53:48PM +0100, Reinhard Nissl wrote:
Hello,
with the last patch, VDR refuse to tune to any DVB-S2 channels.
I guess that VDR thinks all my card are only DVB-S ones.
I get "Channel not available!" on all DVB-S2 channels.
Any maybe not directly interesting, but with this patch, graphlcd
make vdr segault at start.
Thanks,
> The attached version implements this behavior now. You may want
> to experiment a bit with the decision logic as explained below.
>
> The decision is based on the number of modulation systems a card
> provides. For example, my NOVA-S provides one (DVB-S) and my
> SkyStar HD provides three (DVB-S, DVB-DSS, DVB-S2).
>
> The decision logic is implemented in cDevice::GetDevice(), so
> have a look into device.c. After applying the patch, you'll find
> two lines in that function marked with comments like /*1*/ and
> /*2*/, and the latter one was disabled by a line comment.
>
> In my scenario with just the above cards and vdr-xine as software
> device, watching a channel requires VDR to operate in transfer
> mode. Therefore it selects a device which provides for example a
> DVB-S channel. The patched version will choose the NOVA-S with
> either implementation /*1*/ or /*2*/.
>
> Let's then start a DVB-S recording on a different transponder.
> When implementation /*2*/ would be active, VDR would choose the
> SkyStar HD, as the NOVA-S is claimed by transfer mode. Then, try
> to switch to a DVB-S2 channel. It wouldn't work, as the SkyStar
> HD would be claimed by a DVB-S recording.
>
> That's why I've chosen implementation /*1*/ as default. For the
> above scenario, starting a DVB-S recording on a different
> transponder will choose the NOVA-S and kick off transfer mode.
> Then VDR will look for a card to set up transfer mode again and
> it will choose the only remaining card, the SkyStar HD. If you
> then try to switch to a DVB-S2 channel, it will work as the
> SkyStar HD is not claimed by a recording.
>
> >> The patch is incremental to the original dvbs2 patch from
> >> yesterday, i. e. you can simply apply it to your already patched VDR.
>
> Bye.
> --
> Dipl.-Inform. (FH) Reinhard Nissl
> mailto:rnissl at gmx.de
> --- ../vdr-1.5.12-dvbs2-other/device.c 2008-01-01 22:55:18.000000000 +0100
> +++ device.c 2008-01-05 18:06:15.000000000 +0100
> @@ -359,6 +359,21 @@ cDevice *cDevice::GetDevice(int Index)
> return (0 <= Index && Index < numDevices) ? device[Index] : NULL;
> }
>
> +inline int GetClippedModulationSystemCount(int AvailableBits, cDevice *Device)
> +{
> + int ModulationSystemCount = Device->ModulationSystemCount();
> + int MaxModulationSystemCount = 1 << AvailableBits;
> + if (ModulationSystemCount > MaxModulationSystemCount) {
> + esyslog("ERROR: device %d supports %d modulation systems but cDevice::GetDevice() currently only supports %d modulation systems which should be fixed", Device->CardIndex() + 1, ModulationSystemCount, MaxModulationSystemCount);
> + ModulationSystemCount = MaxModulationSystemCount;
> + }
> + else if (ModulationSystemCount <= 0) {
> + esyslog("ERROR: device %d reported an invalid number (%d) of supported modulation systems. The device should be fixed to return at least 1", Device->CardIndex() + 1, ModulationSystemCount);
> + ModulationSystemCount = 1;
> + }
> + return ModulationSystemCount;
> +}
> +
> cDevice *cDevice::GetDevice(const cChannel *Channel, int Priority, bool LiveView)
> {
> // Collect the current priorities of all CAM slots that can decrypt the channel:
> @@ -408,11 +423,13 @@ cDevice *cDevice::GetDevice(const cChann
> imp <<= 1; imp |= LiveView ? !device[i]->IsPrimaryDevice() || ndr : 0; // prefer the primary device for live viewing if we don't need to detach existing receivers
> imp <<= 1; imp |= !device[i]->Receiving() && (device[i] != cTransferControl::ReceiverDevice() || device[i]->IsPrimaryDevice()) || ndr; // use receiving devices if we don't need to detach existing receivers, but avoid primary device in local transfer mode
> imp <<= 1; imp |= device[i]->Receiving(); // avoid devices that are receiving
> +/*1*/ imp <<= 2; imp |= GetClippedModulationSystemCount(2, device[i]) - 1; // avoid cards which support multiple modulation systems
> imp <<= 1; imp |= device[i] == cTransferControl::ReceiverDevice(); // avoid the Transfer Mode receiver device
> imp <<= 8; imp |= min(max(device[i]->Priority() + MAXPRIORITY, 0), 0xFF); // use the device with the lowest priority (+MAXPRIORITY to assure that values -99..99 can be used)
> imp <<= 8; imp |= min(max((NumUsableSlots ? SlotPriority[j] : 0) + MAXPRIORITY, 0), 0xFF); // use the CAM slot with the lowest priority (+MAXPRIORITY to assure that values -99..99 can be used)
> imp <<= 1; imp |= ndr; // avoid devices if we need to detach existing receivers
> imp <<= 1; imp |= device[i]->IsPrimaryDevice(); // avoid the primary device
> +///*2*/ imp <<= 2; imp |= GetClippedModulationSystemCount(2, device[i]) - 1; // avoid cards which support multiple modulation systems
> imp <<= 1; imp |= NumUsableSlots ? 0 : device[i]->HasCi(); // avoid cards with Common Interface for FTA channels
> imp <<= 1; imp |= device[i]->HasDecoder(); // avoid full featured cards
> imp <<= 1; imp |= NumUsableSlots ? !ChannelCamRelations.CamDecrypt(Channel->GetChannelID(), j + 1) : 0; // prefer CAMs that are known to decrypt this channel
> --- ../vdr-1.5.12-dvbs2-other/device.h 2007-10-21 11:21:52.000000000 +0200
> +++ device.h 2008-01-05 17:22:25.000000000 +0100
> @@ -224,6 +224,10 @@ public:
> ///< function itself actually returns true.
> ///< The default implementation always returns false, so a derived cDevice
> ///< class that can provide channels must implement this function.
> + virtual int ModulationSystemCount() const { return 0; }
> + ///< Returns the number of modulation systems the device supports.
> + ///< The default implementation always returns 0, so a derived cDevice
> + ///< class that can provide channels must implement this function.
> virtual bool IsTunedToTransponder(const cChannel *Channel);
> ///< Returns true if this device is currently tuned to the given Channel's
> ///< transponder.
> --- ../vdr-1.5.12-dvbs2-other/dvbdevice.c 2008-01-01 22:55:18.000000000 +0100
> +++ dvbdevice.c 2008-01-05 17:36:36.000000000 +0100
> @@ -406,6 +406,7 @@ cDvbDevice::cDvbDevice(int n)
> {
> ciAdapter = NULL;
> dvbTuner = NULL;
> + modulationSystemCount = 0;
> frontendType = DVBFE_DELSYS_DUMMY;
> spuDecoder = NULL;
> digitalAudio = false;
> @@ -468,8 +469,14 @@ cDvbDevice::cDvbDevice(int n)
> // We only check the devices that must be present - the others will be checked before accessing them://XXX
>
> if (fd_frontend >= 0) {
> - if (ioctl(fd_frontend, DVBFE_GET_DELSYS, &frontendType) >= 0)
> + if (ioctl(fd_frontend, DVBFE_GET_DELSYS, &frontendType) >= 0) {
> + // determine number of supported modulation systems by counting the bits
> + for (int i = 0; i < 32; i++) {
> + if (frontendType & (1u << i))
> + modulationSystemCount++;
> + }
> dvbTuner = new cDvbTuner(fd_frontend, CardIndex(), frontendType);
> + }
> else
> LOG_ERROR;
> }
> @@ -798,7 +805,13 @@ bool cDvbDevice::ProvidesSource(int Sour
>
> bool cDvbDevice::ProvidesTransponder(const cChannel *Channel) const
> {
> - return ProvidesSource(Channel->Source()) && (!cSource::IsSat(Channel->Source()) || !Setup.DiSEqC || Diseqcs.Get(Channel->Source(), Channel->Frequency(), Channel->Polarization()));
> + if (!ProvidesSource(Channel->Source()))
> + return false; // doesn't provide source
> + if (!cSource::IsSat(Channel->Source()))
> + return true; // source is sufficient for non sat
> + if (!(frontendType & Channel->ModulationSystem()))
> + return false; // requires modulation system which frontend doesn't provide
> + return !Setup.DiSEqC || Diseqcs.Get(Channel->Source(), Channel->Frequency(), Channel->Polarization());
> }
>
> bool cDvbDevice::ProvidesChannel(const cChannel *Channel, int Priority, bool *NeedsDetachReceivers) const
> @@ -807,7 +820,7 @@ bool cDvbDevice::ProvidesChannel(const c
> bool hasPriority = Priority < 0 || Priority > this->Priority();
> bool needsDetachReceivers = false;
>
> - if (ProvidesSource(Channel->Source())) {
> + if (ProvidesTransponder(Channel)) {
> result = hasPriority;
> if (Priority >= 0 && Receiving(true)) {
> if (dvbTuner->IsTunedTo(Channel)) {
> --- ../vdr-1.5.12-dvbs2-other/dvbdevice.h 2008-01-01 22:55:18.000000000 +0100
> +++ dvbdevice.h 2008-01-05 17:29:49.000000000 +0100
> @@ -35,6 +35,7 @@ public:
> ///< Must be called before accessing any DVB functions.
> ///< \return True if any devices are available.
> private:
> + int modulationSystemCount;
> dvbfe_delsys frontendType;
> int fd_osd, fd_audio, fd_video, fd_dvr, fd_stc, fd_ca;
> protected:
> @@ -66,6 +67,7 @@ public:
> virtual bool ProvidesSource(int Source) const;
> virtual bool ProvidesTransponder(const cChannel *Channel) const;
> virtual bool ProvidesChannel(const cChannel *Channel, int Priority = -1, bool *NeedsDetachReceivers = NULL) const;
> + virtual int ModulationSystemCount() const { return modulationSystemCount; }
> virtual bool IsTunedToTransponder(const cChannel *Channel);
> protected:
> virtual bool SetChannelDevice(const cChannel *Channel, bool LiveView);
> _______________________________________________
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--
Grégoire FAVRE http://gregoire.favre.googlepages.com http://www.gnupg.org
http://picasaweb.google.com/Gregoire.Favre
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