From 1c0b4da0c2261c0916b9ae96a4a04b76cb1174af Mon Sep 17 00:00:00 2001
From: Sandesh Venkatesh <sandesh.venkatesh@ittiam.com>
Date: Sun, 31 Mar 2024 13:52:56 +0530
Subject: [PATCH] Issue fix: 719, 720, 721 and 722 issue fixes

---
 lib_com/mslvq_com_fx.c              |  2 +-
 lib_dec/ivas_stereo_cng_dec.c       | 21 ++++++++++++++++-----
 lib_dec/ivas_stereo_dft_dec_fx.c    |  2 +-
 lib_dec/ivas_stereo_switching_dec.c |  4 ++--
 lib_dec/pit_dec_fx.c                |  1 -
 5 files changed, 20 insertions(+), 10 deletions(-)

diff --git a/lib_com/mslvq_com_fx.c b/lib_com/mslvq_com_fx.c
index aa3e4195d..55e47f453 100644
--- a/lib_com/mslvq_com_fx.c
+++ b/lib_com/mslvq_com_fx.c
@@ -1250,7 +1250,7 @@ void deindex_lvq_SHB_fx(
 
         /* find idx_leader */
         i = 1;
-        WHILE (index >= table_no_cv[i])
+        WHILE (index > table_no_cv[i])
         {
             i++;
         }
diff --git a/lib_dec/ivas_stereo_cng_dec.c b/lib_dec/ivas_stereo_cng_dec.c
index 07a74faca..352115551 100644
--- a/lib_dec/ivas_stereo_cng_dec.c
+++ b/lib_dec/ivas_stereo_cng_dec.c
@@ -1467,12 +1467,23 @@ void stereo_cna_update_params_fx(
             temp_res_q = 0;
             c_fx = BASOP_Util_Divide3232_Scale((Word32)enrL_fx, (Word32)enrR_fx, &temp_res_q);
             c_q = 15 - temp_res_q + (y_q - x_q);
+            
+            Word32 one_in_c_q ;
+            IF (GT_16( c_q, 31 ) )
+            {
+              c_q = 31;
+              c_fx = L_shr_sat(c_fx, c_q - 31);
+              one_in_c_q = ONE_IN_Q31;
+            }
+            ELSE
+            {
+              one_in_c_q = L_shl_sat(1, c_q);
+            }
 
-            Word32 one_in_c_q = L_shl(1 , c_q);
-            Word32 num_c_fx = L_sub(c_fx, one_in_c_q);
-            Word32 denom_c_fx = L_add(c_fx, one_in_c_q);
-            Word16 num_c_headroom = norm_l(L_sub(c_fx, one_in_c_q));
-            Word16 denom_c_headroom = norm_l(L_add(c_fx, one_in_c_q));
+            Word32 num_c_fx = L_sub_sat(c_fx, one_in_c_q);
+            Word32 denom_c_fx = L_add_sat(c_fx, one_in_c_q);
+            Word16 num_c_headroom = norm_l(L_sub_sat(c_fx, one_in_c_q));
+            Word16 denom_c_headroom = norm_l(L_add_sat(c_fx, one_in_c_q));
             Word16 min_headroom_left = num_c_headroom < denom_c_headroom ? num_c_headroom : denom_c_headroom;
             temp_res_q = 0;
             c_ILD_fx = BASOP_Util_Divide3232_Scale(L_shl_sat(num_c_fx, min_headroom_left), L_shl_sat(denom_c_fx, min_headroom_left), &temp_res_q);
diff --git a/lib_dec/ivas_stereo_dft_dec_fx.c b/lib_dec/ivas_stereo_dft_dec_fx.c
index 0956286d3..1c8aef1b5 100644
--- a/lib_dec/ivas_stereo_dft_dec_fx.c
+++ b/lib_dec/ivas_stereo_dft_dec_fx.c
@@ -3097,7 +3097,7 @@ void stereo_dft_dec_sid_coh_fx(
 
         FOR( i = 0; i < b; i++ )
         {
-            pred_fx = add( pred_fx, mult( ( *pptr_fx++ ), shl( cohBandq_fx[i], 2 ) ) ); /*q-13*/
+            pred_fx = add( pred_fx, shl(mult( ( *pptr_fx++ ), cohBandq_fx[i] ), 2) ); /*q-13*/
         }
         /* Weighted intra/inter-frame prediction */
         pred_fx = add( mult( alpha_fx, pred_fx ), mult( sub( 32767, alpha_fx ), coh_fx[b] ) ); /*q-13*/
diff --git a/lib_dec/ivas_stereo_switching_dec.c b/lib_dec/ivas_stereo_switching_dec.c
index 285f06c26..5587962c9 100644
--- a/lib_dec/ivas_stereo_switching_dec.c
+++ b/lib_dec/ivas_stereo_switching_dec.c
@@ -4015,13 +4015,13 @@ void stereo_switching_dec(
             }
             ELSE
             {
-                IF( hCPE->hStereoDftDmx->prevTargetGain_fx == ONE_IN_Q29 )
+                IF( hCPE->hStereoTCA->prevTargetGain_fx == ONE_IN_Q29 )
                 {
                     tmpF_fx = ONE_IN_Q27;
                 }
                 ELSE
                 {
-                    Word16 temp_b = (Word16) L_shr( hCPE->hStereoDftDmx->prevTargetGain_fx, 16 );
+                    Word16 temp_b = (Word16) L_shr( hCPE->hStereoTCA->prevTargetGain_fx, 16 );
                     Word16 temp_b_q = 2;
                     tmpF_fx = Inv16( temp_b, &temp_b_q );
                     tmpF_fx = L_shl( tmpF_fx, ( 31 - 4 ) - ( 15 - temp_b_q ) );
diff --git a/lib_dec/pit_dec_fx.c b/lib_dec/pit_dec_fx.c
index a847853f9..b19b389df 100644
--- a/lib_dec/pit_dec_fx.c
+++ b/lib_dec/pit_dec_fx.c
@@ -779,7 +779,6 @@ Word16 pit_decode_ivas_fx(                  /* o  : floating pitch value
                 move16();
                 move16();
             }
-            printf( "function not tested yet\n" );
         }
 #endif
         ELSE
-- 
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