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-rwxr-xr-xinclude/asterisk/ulaw.h15
1 files changed, 13 insertions, 2 deletions
diff --git a/include/asterisk/ulaw.h b/include/asterisk/ulaw.h
index f7d3ea5fe..5bb8065fe 100755
--- a/include/asterisk/ulaw.h
+++ b/include/asterisk/ulaw.h
@@ -14,10 +14,21 @@
#ifndef _ASTERISK_ULAW_H
#define _ASTERISK_ULAW_H
+//! Init the ulaw conversion stuff
+/*!
+ * To init the ulaw to slinear conversion stuff, this needs to be run.
+ */
extern void ast_ulaw_init(void);
-extern unsigned char ast_lin2mu[65536];
-extern short ast_mulaw[256];
+//! converts signed linear to mulaw
+/*!
+ */
+extern unsigned char __ast_lin2mu[16384];
+
+//! help
+extern short __ast_mulaw[256];
+#define AST_LIN2MU(a) (__ast_lin2mu[((unsigned short)(a)) >> 2])
+#define AST_MULAW(a) (__ast_mulaw[(a)])
#endif