common functions to both audio- and midi-settings

svn path=/trunk/externals/iem/mediasettings/; revision=16590

1 files changed, 100 insertions, 0 deletions

diff --git a/mediasettings.h b/mediasettings.h
new file mode 100644
index 0000000..2b31d40
--- /dev/null
+++ b/mediasettings.h
@@ -0,0 +1,100 @@
+/******************************************************
+ *
+ * audiosettings - get/set audio preferences from within Pd-patches
+ * Copyright (C) 2010-2012 IOhannes m zmölnig
+ *
+ *   forum::für::umläute
+ *
+ *   institute of electronic music and acoustics (iem)
+ *   university of music and dramatic arts, graz (kug)
+ *
+ *
+ ******************************************************
+ *
+ * license: GNU General Public License v.3 or later
+ *
+ ******************************************************/
+#include "m_pd.h"
+#include "s_stuff.h"
+#include <stdio.h>
+#include <string.h>
+#include <ctype.h>
+
+#define MAXNDEV 20
+#define DEVDESCSIZE 80
+
+/**
+ * find EOS of a string of tokens
+ * where EOS might be indicated by \0, }
+ */
+unsigned int findEOT(const char*s, unsigned int length) {
+  unsigned int len=0;
+  do {
+    char c=s[len];
+    len++;
+    switch(c) {
+    case '{':
+      len+=findEOT(s+len, length-len);
+      break;
+    case '}':
+      if('{'!=s[0])
+        return len;
+      else
+        return len-1;
+    case '\0':
+      return len;
+    }
+  } while(len<length);
+  return len;
+}
+
+/**
+ * parse a string like "jack 3" into the name "jack" and the ID '3'
+ */
+static
+int common_parsedriver(const char*str, const int inlen, 
+                       char*name, int length, 
+                       int *id) {
+  /* find beginning of trailing number */
+  int stop=inlen-1;
+  int start1=0;
+  int stop1=0;
+  int start=0;
+  int ret=0;
+
+  while('\0'==str[stop] && stop>=0)
+    stop--;
+
+  start=stop;
+  while(start>=0) {
+    char c=str[start];
+    if(c<48 || c>=57) break;
+    start--;
+  }
+  if(start==stop || start<0)
+    return ret;
+
+  stop1=start;
+  while(stop1>=0) {
+    char c=str[stop1];
+    if(!isspace(c))
+      break;
+    stop1--;
+  }
+  if(stop1<0)
+    return ret;
+
+  if((   str[start1]=='"' && str[stop1]=='"') 
+     || (str[start1]=='\''  && str[stop1]=='\'')
+     || (str[start1]=='{'  && str[stop1]=='}')
+     ) {
+    start1++;
+    stop1--;
+  }
+  stop1+=2;
+  if(stop1>=length)stop1=length-1;
+  snprintf(name, stop1-start1, "%s", str+start1);
+  ret=(1==sscanf(str+start, "%d", id));
+
+  return ret;
+}