diff --git a/jni/libgsm/src/gsm_encode.c b/jni/libgsm/src/gsm_encode.c
new file mode 100644
index 0000000..51bc556
--- /dev/null
+++ b/jni/libgsm/src/gsm_encode.c
@@ -0,0 +1,451 @@
+/*
+ * Copyright 1992 by Jutta Degener and Carsten Bormann, Technische
+ * Universitaet Berlin.  See the accompanying file "COPYRIGHT" for
+ * details.  THERE IS ABSOLUTELY NO WARRANTY FOR THIS SOFTWARE.
+ */
+
+/* $Header: /tmp_amd/presto/export/kbs/jutta/src/gsm/RCS/gsm_encode.c,v 1.2 1996/07/02 09:59:05 jutta Exp $ */
+
+#include "private.h"
+#include "gsm.h"
+#include "proto.h"
+
+void gsm_encode P3((s, source, c), gsm s, gsm_signal * source, gsm_byte * c)
+{
+	word	 	LARc[8], Nc[4], Mc[4], bc[4], xmaxc[4], xmc[13*4];
+
+	Gsm_Coder(s, source, LARc, Nc, bc, Mc, xmaxc, xmc);
+
+
+	/*	variable	size
+
+		GSM_MAGIC	4
+
+		LARc[0]		6
+		LARc[1]		6
+		LARc[2]		5
+		LARc[3]		5
+		LARc[4]		4
+		LARc[5]		4
+		LARc[6]		3
+		LARc[7]		3
+
+		Nc[0]		7
+		bc[0]		2
+		Mc[0]		2
+		xmaxc[0]	6
+		xmc[0]		3
+		xmc[1]		3
+		xmc[2]		3
+		xmc[3]		3
+		xmc[4]		3
+		xmc[5]		3
+		xmc[6]		3
+		xmc[7]		3
+		xmc[8]		3
+		xmc[9]		3
+		xmc[10]		3
+		xmc[11]		3
+		xmc[12]		3
+
+		Nc[1]		7
+		bc[1]		2
+		Mc[1]		2
+		xmaxc[1]	6
+		xmc[13]		3
+		xmc[14]		3
+		xmc[15]		3
+		xmc[16]		3
+		xmc[17]		3
+		xmc[18]		3
+		xmc[19]		3
+		xmc[20]		3
+		xmc[21]		3
+		xmc[22]		3
+		xmc[23]		3
+		xmc[24]		3
+		xmc[25]		3
+
+		Nc[2]		7
+		bc[2]		2
+		Mc[2]		2
+		xmaxc[2]	6
+		xmc[26]		3
+		xmc[27]		3
+		xmc[28]		3
+		xmc[29]		3
+		xmc[30]		3
+		xmc[31]		3
+		xmc[32]		3
+		xmc[33]		3
+		xmc[34]		3
+		xmc[35]		3
+		xmc[36]		3
+		xmc[37]		3
+		xmc[38]		3
+
+		Nc[3]		7
+		bc[3]		2
+		Mc[3]		2
+		xmaxc[3]	6
+		xmc[39]		3
+		xmc[40]		3
+		xmc[41]		3
+		xmc[42]		3
+		xmc[43]		3
+		xmc[44]		3
+		xmc[45]		3
+		xmc[46]		3
+		xmc[47]		3
+		xmc[48]		3
+		xmc[49]		3
+		xmc[50]		3
+		xmc[51]		3
+	*/
+
+#ifdef WAV49
+
+	if (s->wav_fmt) {
+		s->frame_index = !s->frame_index;
+		if (s->frame_index) {
+
+			uword sr;
+
+			sr = 0;
+			sr = sr >> 6 | LARc[0] << 10;
+			sr = sr >> 6 | LARc[1] << 10;
+			*c++ = sr >> 4;
+			sr = sr >> 5 | LARc[2] << 11;
+			*c++ = sr >> 7;
+			sr = sr >> 5 | LARc[3] << 11;
+			sr = sr >> 4 | LARc[4] << 12;
+			*c++ = sr >> 6;
+			sr = sr >> 4 | LARc[5] << 12;
+			sr = sr >> 3 | LARc[6] << 13;
+			*c++ = sr >> 7;
+			sr = sr >> 3 | LARc[7] << 13;
+			sr = sr >> 7 | Nc[0] << 9;
+			*c++ = sr >> 5;
+			sr = sr >> 2 | bc[0] << 14;
+			sr = sr >> 2 | Mc[0] << 14;
+			sr = sr >> 6 | xmaxc[0] << 10;
+			*c++ = sr >> 3;
+			sr = sr >> 3 | xmc[0] << 13;
+			*c++ = sr >> 8;
+			sr = sr >> 3 | xmc[1] << 13;
+			sr = sr >> 3 | xmc[2] << 13;
+			sr = sr >> 3 | xmc[3] << 13;
+			*c++ = sr >> 7;
+			sr = sr >> 3 | xmc[4] << 13;
+			sr = sr >> 3 | xmc[5] << 13;
+			sr = sr >> 3 | xmc[6] << 13;
+			*c++ = sr >> 6;
+			sr = sr >> 3 | xmc[7] << 13;
+			sr = sr >> 3 | xmc[8] << 13;
+			*c++ = sr >> 8;
+			sr = sr >> 3 | xmc[9] << 13;
+			sr = sr >> 3 | xmc[10] << 13;
+			sr = sr >> 3 | xmc[11] << 13;
+			*c++ = sr >> 7;
+			sr = sr >> 3 | xmc[12] << 13;
+			sr = sr >> 7 | Nc[1] << 9;
+			*c++ = sr >> 5;
+			sr = sr >> 2 | bc[1] << 14;
+			sr = sr >> 2 | Mc[1] << 14;
+			sr = sr >> 6 | xmaxc[1] << 10;
+			*c++ = sr >> 3;
+			sr = sr >> 3 | xmc[13] << 13;
+			*c++ = sr >> 8;
+			sr = sr >> 3 | xmc[14] << 13;
+			sr = sr >> 3 | xmc[15] << 13;
+			sr = sr >> 3 | xmc[16] << 13;
+			*c++ = sr >> 7;
+			sr = sr >> 3 | xmc[17] << 13;
+			sr = sr >> 3 | xmc[18] << 13;
+			sr = sr >> 3 | xmc[19] << 13;
+			*c++ = sr >> 6;
+			sr = sr >> 3 | xmc[20] << 13;
+			sr = sr >> 3 | xmc[21] << 13;
+			*c++ = sr >> 8;
+			sr = sr >> 3 | xmc[22] << 13;
+			sr = sr >> 3 | xmc[23] << 13;
+			sr = sr >> 3 | xmc[24] << 13;
+			*c++ = sr >> 7;
+			sr = sr >> 3 | xmc[25] << 13;
+			sr = sr >> 7 | Nc[2] << 9;
+			*c++ = sr >> 5;
+			sr = sr >> 2 | bc[2] << 14;
+			sr = sr >> 2 | Mc[2] << 14;
+			sr = sr >> 6 | xmaxc[2] << 10;
+			*c++ = sr >> 3;
+			sr = sr >> 3 | xmc[26] << 13;
+			*c++ = sr >> 8;
+			sr = sr >> 3 | xmc[27] << 13;
+			sr = sr >> 3 | xmc[28] << 13;
+			sr = sr >> 3 | xmc[29] << 13;
+			*c++ = sr >> 7;
+			sr = sr >> 3 | xmc[30] << 13;
+			sr = sr >> 3 | xmc[31] << 13;
+			sr = sr >> 3 | xmc[32] << 13;
+			*c++ = sr >> 6;
+			sr = sr >> 3 | xmc[33] << 13;
+			sr = sr >> 3 | xmc[34] << 13;
+			*c++ = sr >> 8;
+			sr = sr >> 3 | xmc[35] << 13;
+			sr = sr >> 3 | xmc[36] << 13;
+			sr = sr >> 3 | xmc[37] << 13;
+			*c++ = sr >> 7;
+			sr = sr >> 3 | xmc[38] << 13;
+			sr = sr >> 7 | Nc[3] << 9;
+			*c++ = sr >> 5;
+			sr = sr >> 2 | bc[3] << 14;
+			sr = sr >> 2 | Mc[3] << 14;
+			sr = sr >> 6 | xmaxc[3] << 10;
+			*c++ = sr >> 3;
+			sr = sr >> 3 | xmc[39] << 13;
+			*c++ = sr >> 8;
+			sr = sr >> 3 | xmc[40] << 13;
+			sr = sr >> 3 | xmc[41] << 13;
+			sr = sr >> 3 | xmc[42] << 13;
+			*c++ = sr >> 7;
+			sr = sr >> 3 | xmc[43] << 13;
+			sr = sr >> 3 | xmc[44] << 13;
+			sr = sr >> 3 | xmc[45] << 13;
+			*c++ = sr >> 6;
+			sr = sr >> 3 | xmc[46] << 13;
+			sr = sr >> 3 | xmc[47] << 13;
+			*c++ = sr >> 8;
+			sr = sr >> 3 | xmc[48] << 13;
+			sr = sr >> 3 | xmc[49] << 13;
+			sr = sr >> 3 | xmc[50] << 13;
+			*c++ = sr >> 7;
+			sr = sr >> 3 | xmc[51] << 13;
+			sr = sr >> 4;
+			*c = sr >> 8;
+			s->frame_chain = *c;
+		}
+		else {
+			uword sr;
+
+			sr = 0;
+			sr = sr >> 4 | s->frame_chain << 12;
+			sr = sr >> 6 | LARc[0] << 10;
+			*c++ = sr >> 6;
+			sr = sr >> 6 | LARc[1] << 10;
+			*c++ = sr >> 8;
+			sr = sr >> 5 | LARc[2] << 11;
+			sr = sr >> 5 | LARc[3] << 11;
+			*c++ = sr >> 6;
+			sr = sr >> 4 | LARc[4] << 12;
+			sr = sr >> 4 | LARc[5] << 12;
+			*c++ = sr >> 6;
+			sr = sr >> 3 | LARc[6] << 13;
+			sr = sr >> 3 | LARc[7] << 13;
+			*c++ = sr >> 8;
+			sr = sr >> 7 | Nc[0] << 9;
+			sr = sr >> 2 | bc[0] << 14;
+			*c++ = sr >> 7;
+			sr = sr >> 2 | Mc[0] << 14;
+			sr = sr >> 6 | xmaxc[0] << 10;
+			*c++ = sr >> 7;
+			sr = sr >> 3 | xmc[0] << 13;
+			sr = sr >> 3 | xmc[1] << 13;
+			sr = sr >> 3 | xmc[2] << 13;
+			*c++ = sr >> 6;
+			sr = sr >> 3 | xmc[3] << 13;
+			sr = sr >> 3 | xmc[4] << 13;
+			*c++ = sr >> 8;
+			sr = sr >> 3 | xmc[5] << 13;
+			sr = sr >> 3 | xmc[6] << 13;
+			sr = sr >> 3 | xmc[7] << 13;
+			*c++ = sr >> 7;
+			sr = sr >> 3 | xmc[8] << 13;
+			sr = sr >> 3 | xmc[9] << 13;
+			sr = sr >> 3 | xmc[10] << 13;
+			*c++ = sr >> 6;
+			sr = sr >> 3 | xmc[11] << 13;
+			sr = sr >> 3 | xmc[12] << 13;
+			*c++ = sr >> 8;
+			sr = sr >> 7 | Nc[1] << 9;
+			sr = sr >> 2 | bc[1] << 14;
+			*c++ = sr >> 7;
+			sr = sr >> 2 | Mc[1] << 14;
+			sr = sr >> 6 | xmaxc[1] << 10;
+			*c++ = sr >> 7;
+			sr = sr >> 3 | xmc[13] << 13;
+			sr = sr >> 3 | xmc[14] << 13;
+			sr = sr >> 3 | xmc[15] << 13;
+			*c++ = sr >> 6;
+			sr = sr >> 3 | xmc[16] << 13;
+			sr = sr >> 3 | xmc[17] << 13;
+			*c++ = sr >> 8;
+			sr = sr >> 3 | xmc[18] << 13;
+			sr = sr >> 3 | xmc[19] << 13;
+			sr = sr >> 3 | xmc[20] << 13;
+			*c++ = sr >> 7;
+			sr = sr >> 3 | xmc[21] << 13;
+			sr = sr >> 3 | xmc[22] << 13;
+			sr = sr >> 3 | xmc[23] << 13;
+			*c++ = sr >> 6;
+			sr = sr >> 3 | xmc[24] << 13;
+			sr = sr >> 3 | xmc[25] << 13;
+			*c++ = sr >> 8;
+			sr = sr >> 7 | Nc[2] << 9;
+			sr = sr >> 2 | bc[2] << 14;
+			*c++ = sr >> 7;
+			sr = sr >> 2 | Mc[2] << 14;
+			sr = sr >> 6 | xmaxc[2] << 10;
+			*c++ = sr >> 7;
+			sr = sr >> 3 | xmc[26] << 13;
+			sr = sr >> 3 | xmc[27] << 13;
+			sr = sr >> 3 | xmc[28] << 13;
+			*c++ = sr >> 6;
+			sr = sr >> 3 | xmc[29] << 13;
+			sr = sr >> 3 | xmc[30] << 13;
+			*c++ = sr >> 8;
+			sr = sr >> 3 | xmc[31] << 13;
+			sr = sr >> 3 | xmc[32] << 13;
+			sr = sr >> 3 | xmc[33] << 13;
+			*c++ = sr >> 7;
+			sr = sr >> 3 | xmc[34] << 13;
+			sr = sr >> 3 | xmc[35] << 13;
+			sr = sr >> 3 | xmc[36] << 13;
+			*c++ = sr >> 6;
+			sr = sr >> 3 | xmc[37] << 13;
+			sr = sr >> 3 | xmc[38] << 13;
+			*c++ = sr >> 8;
+			sr = sr >> 7 | Nc[3] << 9;
+			sr = sr >> 2 | bc[3] << 14;
+			*c++ = sr >> 7;
+			sr = sr >> 2 | Mc[3] << 14;
+			sr = sr >> 6 | xmaxc[3] << 10;
+			*c++ = sr >> 7;
+			sr = sr >> 3 | xmc[39] << 13;
+			sr = sr >> 3 | xmc[40] << 13;
+			sr = sr >> 3 | xmc[41] << 13;
+			*c++ = sr >> 6;
+			sr = sr >> 3 | xmc[42] << 13;
+			sr = sr >> 3 | xmc[43] << 13;
+			*c++ = sr >> 8;
+			sr = sr >> 3 | xmc[44] << 13;
+			sr = sr >> 3 | xmc[45] << 13;
+			sr = sr >> 3 | xmc[46] << 13;
+			*c++ = sr >> 7;
+			sr = sr >> 3 | xmc[47] << 13;
+			sr = sr >> 3 | xmc[48] << 13;
+			sr = sr >> 3 | xmc[49] << 13;
+			*c++ = sr >> 6;
+			sr = sr >> 3 | xmc[50] << 13;
+			sr = sr >> 3 | xmc[51] << 13;
+			*c++ = sr >> 8;
+		}
+	}
+
+	else
+
+#endif	/* WAV49 */
+	{
+
+		*c++ =   ((GSM_MAGIC & 0xF) << 4)		/* 1 */
+		       | ((LARc[0] >> 2) & 0xF);
+		*c++ =   ((LARc[0] & 0x3) << 6)
+		       | (LARc[1] & 0x3F);
+		*c++ =   ((LARc[2] & 0x1F) << 3)
+		       | ((LARc[3] >> 2) & 0x7);
+		*c++ =   ((LARc[3] & 0x3) << 6)
+		       | ((LARc[4] & 0xF) << 2)
+		       | ((LARc[5] >> 2) & 0x3);
+		*c++ =   ((LARc[5] & 0x3) << 6)
+		       | ((LARc[6] & 0x7) << 3)
+		       | (LARc[7] & 0x7);
+		*c++ =   ((Nc[0] & 0x7F) << 1)
+		       | ((bc[0] >> 1) & 0x1);
+		*c++ =   ((bc[0] & 0x1) << 7)
+		       | ((Mc[0] & 0x3) << 5)
+		       | ((xmaxc[0] >> 1) & 0x1F);
+		*c++ =   ((xmaxc[0] & 0x1) << 7)
+		       | ((xmc[0] & 0x7) << 4)
+		       | ((xmc[1] & 0x7) << 1)
+		       | ((xmc[2] >> 2) & 0x1);
+		*c++ =   ((xmc[2] & 0x3) << 6)
+		       | ((xmc[3] & 0x7) << 3)
+		       | (xmc[4] & 0x7);
+		*c++ =   ((xmc[5] & 0x7) << 5)			/* 10 */
+		       | ((xmc[6] & 0x7) << 2)
+		       | ((xmc[7] >> 1) & 0x3);
+		*c++ =   ((xmc[7] & 0x1) << 7)
+		       | ((xmc[8] & 0x7) << 4)
+		       | ((xmc[9] & 0x7) << 1)
+		       | ((xmc[10] >> 2) & 0x1);
+		*c++ =   ((xmc[10] & 0x3) << 6)
+		       | ((xmc[11] & 0x7) << 3)
+		       | (xmc[12] & 0x7);
+		*c++ =   ((Nc[1] & 0x7F) << 1)
+		       | ((bc[1] >> 1) & 0x1);
+		*c++ =   ((bc[1] & 0x1) << 7)
+		       | ((Mc[1] & 0x3) << 5)
+		       | ((xmaxc[1] >> 1) & 0x1F);
+		*c++ =   ((xmaxc[1] & 0x1) << 7)
+		       | ((xmc[13] & 0x7) << 4)
+		       | ((xmc[14] & 0x7) << 1)
+		       | ((xmc[15] >> 2) & 0x1);
+		*c++ =   ((xmc[15] & 0x3) << 6)
+		       | ((xmc[16] & 0x7) << 3)
+		       | (xmc[17] & 0x7);
+		*c++ =   ((xmc[18] & 0x7) << 5)
+		       | ((xmc[19] & 0x7) << 2)
+		       | ((xmc[20] >> 1) & 0x3);
+		*c++ =   ((xmc[20] & 0x1) << 7)
+		       | ((xmc[21] & 0x7) << 4)
+		       | ((xmc[22] & 0x7) << 1)
+		       | ((xmc[23] >> 2) & 0x1);
+		*c++ =   ((xmc[23] & 0x3) << 6)
+		       | ((xmc[24] & 0x7) << 3)
+		       | (xmc[25] & 0x7);
+		*c++ =   ((Nc[2] & 0x7F) << 1)			/* 20 */
+		       | ((bc[2] >> 1) & 0x1);
+		*c++ =   ((bc[2] & 0x1) << 7)
+		       | ((Mc[2] & 0x3) << 5)
+		       | ((xmaxc[2] >> 1) & 0x1F);
+		*c++ =   ((xmaxc[2] & 0x1) << 7)
+		       | ((xmc[26] & 0x7) << 4)
+		       | ((xmc[27] & 0x7) << 1)
+		       | ((xmc[28] >> 2) & 0x1);
+		*c++ =   ((xmc[28] & 0x3) << 6)
+		       | ((xmc[29] & 0x7) << 3)
+		       | (xmc[30] & 0x7);
+		*c++ =   ((xmc[31] & 0x7) << 5)
+		       | ((xmc[32] & 0x7) << 2)
+		       | ((xmc[33] >> 1) & 0x3);
+		*c++ =   ((xmc[33] & 0x1) << 7)
+		       | ((xmc[34] & 0x7) << 4)
+		       | ((xmc[35] & 0x7) << 1)
+		       | ((xmc[36] >> 2) & 0x1);
+		*c++ =   ((xmc[36] & 0x3) << 6)
+		       | ((xmc[37] & 0x7) << 3)
+		       | (xmc[38] & 0x7);
+		*c++ =   ((Nc[3] & 0x7F) << 1)
+		       | ((bc[3] >> 1) & 0x1);
+		*c++ =   ((bc[3] & 0x1) << 7)
+		       | ((Mc[3] & 0x3) << 5)
+		       | ((xmaxc[3] >> 1) & 0x1F);
+		*c++ =   ((xmaxc[3] & 0x1) << 7)
+		       | ((xmc[39] & 0x7) << 4)
+		       | ((xmc[40] & 0x7) << 1)
+		       | ((xmc[41] >> 2) & 0x1);
+		*c++ =   ((xmc[41] & 0x3) << 6)			/* 30 */
+		       | ((xmc[42] & 0x7) << 3)
+		       | (xmc[43] & 0x7);
+		*c++ =   ((xmc[44] & 0x7) << 5)
+		       | ((xmc[45] & 0x7) << 2)
+		       | ((xmc[46] >> 1) & 0x3);
+		*c++ =   ((xmc[46] & 0x1) << 7)
+		       | ((xmc[47] & 0x7) << 4)
+		       | ((xmc[48] & 0x7) << 1)
+		       | ((xmc[49] >> 2) & 0x1);
+		*c++ =   ((xmc[49] & 0x3) << 6)
+		       | ((xmc[50] & 0x7) << 3)
+		       | (xmc[51] & 0x7);
+
+	}
+}