Initial version 0.0.1v0.0.1

1 files changed, 27 insertions, 0 deletions

diff --git a/ttxtsubsfilter.h b/ttxtsubsfilter.h
new file mode 100644
index 0000000..3e09b20
--- /dev/null
+++ b/ttxtsubsfilter.h
@@ -0,0 +1,27 @@
+
+// ----- cTtxtSubsFilter -----
+
+// Filters out the pages on one teletext stream 
+class cTtxtSubsFilter
+{
+ public:
+  cTtxtSubsFilter(void);
+  virtual ~cTtxtSubsFilter(void);
+
+  void SetPages(int count, uint16_t *pages);
+
+  // indata and outdata are pointers to a ttxt data row buffers,
+  // if return value <> 0 outdata countains data to pass on
+  int Filter(char *indata, char *outdata);
+
+ private:
+  void FreePages(void);
+  int Find(int count, uint16_t *pages, uint16_t pageno);
+  void MakeY0(char *outdata, char *indata, uint16_t newpageno);
+
+  int mCount;          // number of pages to filter out
+  uint16_t *mPages;    // array of page numbers
+  int mMagPage[8];     /* index into pages for each mag number, or -1 if
+			  not currently collecting pages for that mag */
+};
+