Diff: rtpbuf.h

Revision:

0:4d17cd9c8f9d

Child:

60:b4ec6beb3be3

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/rtpbuf.h	Tue Sep 09 20:01:24 2014 +0000
@@ -0,0 +1,38 @@
+#ifndef _RTPBUF_H
+#define _RTPBUF_H
+
+#include <stdint.h>
+
+/* IMPORTANT: sizes must be multiple of 4 */
+#define RTPBUF_PKGSIZE 240 /* 30ms @ 8Ksamples/sec */
+#define RTPBUF_BUFSIZE 320 /* 40ms @ 8Ksamples/sec */
+
+#if (RTPBUF_PKGSIZE & 0x03)
+# error OPS... value forbidden
+#endif
+#if (RTPBUF_BUFSIZE & 0x03)
+# error OPS... value forbidden
+#endif
+
+struct rtpbuf {
+  uint32_t b[ RTPBUF_BUFSIZE>>2 ];
+  int size;
+};
+typedef struct rtpbuf rtpbuf_t;
+
+/* clear the buffer, useful at the start of a new phone call */
+void rtpbuf_clear (rtpbuf_t * self);
+
+/* use this function to put audio into the fifo */
+void rtpbuf_put (rtpbuf_t * self, int size, uint8_t * data);
+
+/* use this function to check if there is audio available
+ * returns NULL if there is no audio available
+ * or returns a pointer to the audio package */
+uint8_t * rtpbuf_get (rtpbuf_t * self);
+
+/* use this function to tell rtpbuf that you already consumed
+ * the data supplied by rtpbuf_get() */
+void rtpbuf_next (rtpbuf_t * self);
+
+#endif
\ No newline at end of file