1 files changed, 126 insertions, 0 deletions
diff --git a/filter.c b/filter.c
new file mode 100644
index 0000000..668b7d3
--- /dev/null
+++ b/filter.c
@@ -0,0 +1,126 @@
+/*
+ * filter.c: Section filter
+ *
+ * See the main source file 'vdr.c' for copyright information and
+ * how to reach the author.
+ *
+ * $Id: filter.c 1.1 2003/12/21 15:26:16 kls Exp $
+ */
+
+#include "filter.h"
+#include "sections.h"
+
+// --- cFilterData -----------------------------------------------------------
+
+cFilterData::cFilterData(void)
+{
+  pid = 0;
+  tid = 0;
+  mask = 0;
+  sticky = false;
+}
+
+cFilterData::cFilterData(u_short Pid, u_char Tid, u_char Mask, bool Sticky)
+{
+  pid = Pid;
+  tid = Tid;
+  mask = Mask;
+  sticky = Sticky;
+}
+
+bool cFilterData::Is(u_short Pid, u_char Tid, u_char Mask)
+{
+  return pid == Pid && tid == Tid && mask == Mask;
+}
+
+bool cFilterData::Matches(u_short Pid, u_char Tid)
+{
+  return pid == Pid && tid == (Tid & mask);
+}
+
+// --- cFilter ---------------------------------------------------------------
+
+cFilter::cFilter(void)
+{
+  sectionHandler = NULL;
+  on = false;
+}
+
+cFilter::cFilter(u_short Pid, u_char Tid, u_char Mask)
+{
+  sectionHandler = NULL;
+  on = false;
+  Set(Pid, Tid, Mask);
+}
+
+cFilter::~cFilter()
+{
+  if (sectionHandler)
+     sectionHandler->Detach(this);
+}
+
+int cFilter::Source(void)
+{
+  return sectionHandler ? sectionHandler->Source() : 0;
+}
+
+int cFilter::Transponder(void)
+{
+  return sectionHandler ? sectionHandler->Transponder() : 0;
+}
+
+void cFilter::SetStatus(bool On)
+{
+  if (sectionHandler && on != On) {
+     cFilterData *fd = data.First();
+     while (fd) {
+           if (On)
+              sectionHandler->Add(fd);
+           else {
+              sectionHandler->Del(fd);
+              if (!fd->sticky) {
+                 cFilterData *next = data.Next(fd);
+                 data.Del(fd);
+                 fd = next;
+                 continue;
+                 }
+              }
+           fd = data.Next(fd);
+           }
+     on = On;
+     }
+}
+
+bool cFilter::Matches(u_short Pid, u_char Tid)
+{
+  for (cFilterData *fd = data.First(); fd; fd = data.Next(fd)) {
+      if (fd->Matches(Pid, Tid))
+         return true;
+      }
+  return false;
+}
+
+void cFilter::Set(u_short Pid, u_char Tid, u_char Mask)
+{
+  Add(Pid, Tid, Mask, true);
+}
+
+void cFilter::Add(u_short Pid, u_char Tid, u_char Mask, bool Sticky)
+{
+  cFilterData *fd = new cFilterData(Pid, Tid, Mask, Sticky);
+  data.Add(fd);
+  if (sectionHandler && on)
+     sectionHandler->Add(fd);
+}
+
+void cFilter::Del(u_short Pid, u_char Tid, u_char Mask)
+{
+  for (cFilterData *fd = data.First(); fd; fd = data.Next(fd)) {
+      if (fd->Is(Pid, Tid, Mask)) {
+         if (sectionHandler && on)
+            sectionHandler->Del(fd);
+         data.Del(fd);
+         return;
+         }
+      }
+}