CAM handling refactored; multiple recordings with one CAM; automatic CAM selection1.5.0

1 files changed, 108 insertions, 0 deletions

diff --git a/dvbci.c b/dvbci.c
new file mode 100644
index 00000000..744b116b
--- /dev/null
+++ b/dvbci.c
@@ -0,0 +1,108 @@
+/*
+ * dvbci.h: Common Interface for DVB devices
+ *
+ * See the main source file 'vdr.c' for copyright information and
+ * how to reach the author.
+ *
+ * $Id: dvbci.c 1.1 2007/01/07 14:38:00 kls Exp $
+ */
+
+#include "dvbci.h"
+#include <linux/dvb/ca.h>
+#include <sys/ioctl.h>
+#include "device.h"
+
+// --- cDvbCiAdapter ---------------------------------------------------------
+
+cDvbCiAdapter::cDvbCiAdapter(cDevice *Device, int Fd)
+{
+  device = Device;
+  SetDescription("CI adapter on device %d", device->DeviceNumber());
+  fd = Fd;
+  ca_caps_t Caps;
+  if (ioctl(fd, CA_GET_CAP, &Caps) == 0) {
+     if ((Caps.slot_type & CA_CI_LINK) != 0) {
+        int NumSlots = Caps.slot_num;
+        if (NumSlots > 0) {
+           for (int i = 0; i < NumSlots; i++)
+               new cCamSlot(this);
+           Start();
+           }
+        else
+           esyslog("ERROR: no CAM slots found on device %d", device->DeviceNumber());
+        }
+     else
+        isyslog("device %d doesn't support CI link layer interface", device->DeviceNumber());
+     }
+  else
+     esyslog("ERROR: can't get CA capabilities on device %d", device->DeviceNumber());
+}
+
+cDvbCiAdapter::~cDvbCiAdapter()
+{
+  Cancel(3);
+}
+
+int cDvbCiAdapter::Read(uint8_t *Buffer, int MaxLength)
+{
+  if (Buffer && MaxLength > 0) {
+     struct pollfd pfd[1];
+     pfd[0].fd = fd;
+     pfd[0].events = POLLIN;
+     if (poll(pfd, 1, CAM_READ_TIMEOUT) > 0 && (pfd[0].revents & POLLIN)) {
+        int n = safe_read(fd, Buffer, MaxLength);
+        if (n >= 0)
+           return n;
+        esyslog("ERROR: can't read from CI adapter on device %d: %m", device->DeviceNumber());
+        }
+     }
+  return 0;
+}
+
+void cDvbCiAdapter::Write(const uint8_t *Buffer, int Length)
+{
+  if (Buffer && Length > 0) {
+     if (safe_write(fd, Buffer, Length) != Length)
+        esyslog("ERROR: can't write to CI adapter on device %d: %m", device->DeviceNumber());
+     }
+}
+
+bool cDvbCiAdapter::Reset(int Slot)
+{
+  if (ioctl(fd, CA_RESET, 1 << Slot) != -1)
+     return true;
+  else
+     esyslog("ERROR: can't reset CAM slot %d on device %d: %m", Slot, device->DeviceNumber());
+  return false;
+}
+
+eModuleStatus cDvbCiAdapter::ModuleStatus(int Slot)
+{
+  ca_slot_info_t sinfo;
+  sinfo.num = Slot;
+  if (ioctl(fd, CA_GET_SLOT_INFO, &sinfo) != -1) {
+     if ((sinfo.flags & CA_CI_MODULE_READY) != 0)
+        return msReady;
+     else if ((sinfo.flags & CA_CI_MODULE_PRESENT) != 0)
+        return msPresent;
+     }
+  else
+     esyslog("ERROR: can't get info of CAM slot %d on device %d: %m", Slot, device->DeviceNumber());
+  return msNone;
+}
+
+bool cDvbCiAdapter::Assign(cDevice *Device, bool Query)
+{
+  // The CI is hardwired to its device, so there's not really much to do here
+  if (Device)
+     return Device == device;
+  return true;
+}
+
+cDvbCiAdapter *cDvbCiAdapter::CreateCiAdapter(cDevice *Device, int Fd)
+{
+  // TODO check whether a CI is actually present?
+  if (Device)
+     return new cDvbCiAdapter(Device, Fd);
+  return NULL;
+}