--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/libtwamr/qgain795.h	Mon May 06 04:20:11 2024 +0000
@@ -0,0 +1,66 @@
+/*
+********************************************************************************
+*
+*      GSM AMR-NB speech codec   R98   Version 7.6.0   December 12, 2001
+*                                R99   Version 3.3.0                
+*                                REL-4 Version 4.1.0                
+*
+********************************************************************************
+*
+*      File             : qgain795.h
+*      Purpose          : (pre-) quantization of pitch gain for MR795
+*
+********************************************************************************
+*/
+#ifndef qgain795_h
+#define qgain795_h "$Id $"
+ 
+/*
+********************************************************************************
+*                         INCLUDE FILES
+********************************************************************************
+*/
+#include "typedef.h"
+#include "g_adapt.h"
+
+/*
+********************************************************************************
+*                         DECLARATION OF PROTOTYPES
+********************************************************************************
+*/
+
+/*************************************************************************
+ *
+ * FUNCTION:  MR795_gain_quant
+ *
+ * PURPOSE:   pitch and codebook quantization for MR795
+ *
+ *************************************************************************/
+void
+MR795_gain_quant(
+    GainAdaptState *adapt_st, /* i/o: gain adapter state structure       */
+    Word16 res[],             /* i  : LP residual,                  Q0   */
+    Word16 exc[],             /* i  : LTP excitation (unfiltered),  Q0   */
+    Word16 code[],            /* i  : CB innovation (unfiltered),   Q13  */
+    Word16 frac_coeff[],      /* i  : coefficients (5),             Q15  */
+    Word16 exp_coeff[],       /* i  : energy coefficients (5),      Q0   */
+                              /*      coefficients from calc_filt_ener() */
+    Word16 exp_code_en,       /* i  : innovation energy (exponent), Q0   */
+    Word16 frac_code_en,      /* i  : innovation energy (fraction), Q15  */
+    Word16 exp_gcode0,        /* i  : predicted CB gain (exponent), Q0   */
+    Word16 frac_gcode0,       /* i  : predicted CB gain (fraction), Q15  */
+    Word16 L_subfr,           /* i  : Subframe length                    */
+    Word16 cod_gain_frac,     /* i  : opt. codebook gain (fraction),Q15  */
+    Word16 cod_gain_exp,      /* i  : opt. codebook gain (exponent), Q0  */
+    Word16 gp_limit,          /* i  : pitch gain limit                   */
+    Word16 *gain_pit,         /* i/o: Pitch gain (unquant/quant),   Q14  */
+    Word16 *gain_cod,         /* o  : Code gain,                    Q1   */
+    Word16 *qua_ener_MR122,   /* o  : quantized energy error,       Q10  */
+                              /*      (for MR122 MA predictor update)    */
+    Word16 *qua_ener,         /* o  : quantized energy error,       Q10  */
+                              /*      (for other MA predictor update)    */
+    Word16 **anap             /* o  : Index of quantization              */
+                              /*      (first gain pitch, then code pitch)*/
+);
+
+#endif