1 files changed, 65 insertions, 0 deletions
diff --git a/protocols/Tlen/src/codec/gsm.h b/protocols/Tlen/src/codec/gsm.h
new file mode 100644
index 0000000000..f522739d10
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+++ b/protocols/Tlen/src/codec/gsm.h
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+/*
+
+Tlen Protocol Plugin for Miranda NG
+Copyright (C) 2004  Piotr Piastucki
+
+This program is based on GSM 06.10 source code developed by 
+Jutta Degener and Carsten Bormann,
+Copyright 1992, 1993, 1994 by Jutta Degener and Carsten Bormann,
+Technische Universitaet Berlin 
+  
+This program is free software; you can redistribute it and/or
+modify it under the terms of the GNU General Public License
+as published by the Free Software Foundation; either version 2
+of the License, or (at your option) any later version.
+
+This program is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with this program; if not, write to the Free Software
+Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
+
+*/
+#include <windows.h>
+
+#define P_MAX   8   /* order p of LPC analysis, typically 8..14 */
+
+typedef struct {
+	int			LARpp[2][8]; /* LAR coefficients for previous and current frame */
+	int			j;			 /* current frame index in LARpp[j][]   */
+	int	  		qLARs[8];    /* quantized LARs for current frame */
+	int 		u[8];		 /* used by short term analysis filter */
+	int			v[9];		 /* used by short term synthesis filter */
+	int         subframe;    /* subframe index (0..3)*/
+	short		dp0[ 280 ];  /* previous short-term filter output/prediction, used by long term analysis*/
+	int			e[160];		 /* errors (residuals) */
+	int			nrp; 		 /* long term synthesis */
+	int			Nc[4], bc[4]; /* long-term lag and gain for current frame */
+	int			Mc[4];	 	 /* RPE grid index (0..3) */
+	int			xMaxc[4];	 /* RPE maximum error quantized and encoded (mantissa + exp) */
+	int			xMc[52];	 /* quantized residuals (errors) 4 * 13 */
+
+	int			z1;			 /* preprocessing.c, Offset_com. */
+	int			z2;			/*                  Offset_com. */
+	int			mp;			/*                  Preemphasis	*/
+	int			msr;		/* decoder.c,	Postprocessing	*/
+
+	unsigned char gsmFrame[33];
+}gsm_state;
+
+extern gsm_state * gsm_create() ;
+extern void gsm_release(gsm_state *ptr);
+extern void gsm_encode(gsm_state *state, short *in);
+extern void gsm_decode(gsm_state *state, short *out);
+
+extern void gsm_preprocessing( gsm_state *state, short *in, short *out);
+extern void shortTermAnalysis(gsm_state *state, short *in);
+extern void longTermAnalysis(gsm_state *state, short *in);
+extern void encodeRPE(gsm_state *state);
+extern void decodeRPE(gsm_state *state);
+extern void longTermSynthesis(gsm_state *state);
+extern void shortTermSynthesis(gsm_state *state, short *in, short *out);
+extern void gsm_postprocessing( gsm_state *state, short *in, short *out);