Merge branch 'oggLib' of github.com:DDVTECH/libmist into oggLib

Conflicts:
	lib/Makefile.am
	lib/ogg.cpp

Ogg completed further

lib/theora.cpp

@@ -0,0 +1,100 @@
+#include<theora.h>
+#include<stdlib.h>
+#include<string.h>
+#include <arpa/inet.h>
+
+namespace theora{
+  bool header::checkDataSize(unsigned int size){
+    if (size > datasize){
+      void* tmp = realloc(data,size);
+      if (tmp){
+        data = (char*)tmp;
+        datasize = size;
+        return true;
+      }else{
+        return false;
+      }
+    }else{
+      return true;
+    }
+  }
+  
+  /// Gets the 32 bits integer at the given index.
+  /// Attempts to resize the data pointer if the index is out of range.
+  /// Returns zero if resizing failed.
+  uint32_t header::getInt32(size_t index){
+    /*if (index + 3 >= datasize){
+      if ( !reserve(index, 0, 4)){
+        return 0;
+      }
+      setInt32(0, index);
+    }*/
+    uint32_t result;
+    memcpy((char*) &result, data + index, 4);
+    return ntohl(result);
+  }
+  
+  header::header(){
+    data = NULL;
+    datasize = 0;
+  }
+  
+  bool header::read(char* newData, unsigned int length){
+    if (length < 7){
+      return false;
+    }
+    if(memcmp(newData+1, "theora", 6)!=0){
+      return false;
+    }
+    switch(newData[0]){
+      case 0x80:
+        //if (length != 42) return false;
+        break;
+      case 0x81:
+        break;
+      case 0x82:
+        break;
+      default:
+        return false;
+        break;
+    };
+    if (checkDataSize(length)){
+      memcpy(data, newData, length);
+    }else{
+      return false;
+    }
+    return true;
+  }
+  
+  int header::getHeaderType(){
+    switch(data[0]){
+      case 0x80:
+        return 0;
+        break;
+      case 0x81:
+        return 1;
+        break;
+      case 0x82:
+        return 2;
+        break;
+      default:
+        return -1;
+        break;
+    };
+  }
+  
+  long unsigned int header::getFRN(){
+    if (getHeaderType() == 0){
+      return getInt32(22);
+    }
+    return 0;
+  }
+  
+  long unsigned int header::getFRD(){
+    if (getHeaderType() == 0){
+      return getInt32(26);
+    }
+    return 0;
+  }
+
+}