minor clean up of pointer offsets

5 files changed, 13 insertions, 16 deletions

diff --git a/silk/fixed/encode_frame_FIX.c b/silk/fixed/encode_frame_FIX.c
index 5ef44b03..1eef4222 100644
--- a/silk/fixed/encode_frame_FIX.c
+++ b/silk/fixed/encode_frame_FIX.c
@@ -132,7 +132,7 @@ opus_int silk_encode_frame_FIX(
         /*****************************************/
         /* Find pitch lags, initial LPC analysis */
         /*****************************************/
-        silk_find_pitch_lags_FIX( psEnc, &sEncCtrl, res_pitch, x_frame, psEnc->sCmn.arch );
+        silk_find_pitch_lags_FIX( psEnc, &sEncCtrl, res_pitch, x_frame - psEnc->sCmn.ltp_mem_length, psEnc->sCmn.arch );
 
         /************************/
         /* Noise shape analysis */
@@ -142,7 +142,7 @@ opus_int silk_encode_frame_FIX(
         /***************************************************/
         /* Find linear prediction coefficients (LPC + LTP) */
         /***************************************************/
-        silk_find_pred_coefs_FIX( psEnc, &sEncCtrl, res_pitch, x_frame, condCoding );
+        silk_find_pred_coefs_FIX( psEnc, &sEncCtrl, res_pitch_frame, x_frame, condCoding );
 
         /****************************************/
         /* Process gains                        */
diff --git a/silk/fixed/find_pitch_lags_FIX.c b/silk/fixed/find_pitch_lags_FIX.c
index b8440a82..9303e9db 100644
--- a/silk/fixed/find_pitch_lags_FIX.c
+++ b/silk/fixed/find_pitch_lags_FIX.c
@@ -44,7 +44,7 @@ void silk_find_pitch_lags_FIX(
 {
     opus_int   buf_len, i, scale;
     opus_int32 thrhld_Q13, res_nrg;
-    const opus_int16 *x_buf, *x_buf_ptr;
+    const opus_int16 *x_ptr;
     VARDECL( opus_int16, Wsig );
     opus_int16 *Wsig_ptr;
     opus_int32 auto_corr[ MAX_FIND_PITCH_LPC_ORDER + 1 ];
@@ -61,8 +61,6 @@ void silk_find_pitch_lags_FIX(
     /* Safety check */
     silk_assert( buf_len >= psEnc->sCmn.pitch_LPC_win_length );
 
-    x_buf = x - psEnc->sCmn.ltp_mem_length;
-
     /*************************************/
     /* Estimate LPC AR coefficients      */
     /*************************************/
@@ -72,19 +70,19 @@ void silk_find_pitch_lags_FIX(
     ALLOC( Wsig, psEnc->sCmn.pitch_LPC_win_length, opus_int16 );
 
     /* First LA_LTP samples */
-    x_buf_ptr = x_buf + buf_len - psEnc->sCmn.pitch_LPC_win_length;
+    x_ptr = x + buf_len - psEnc->sCmn.pitch_LPC_win_length;
     Wsig_ptr  = Wsig;
-    silk_apply_sine_window( Wsig_ptr, x_buf_ptr, 1, psEnc->sCmn.la_pitch );
+    silk_apply_sine_window( Wsig_ptr, x_ptr, 1, psEnc->sCmn.la_pitch );
 
     /* Middle un - windowed samples */
     Wsig_ptr  += psEnc->sCmn.la_pitch;
-    x_buf_ptr += psEnc->sCmn.la_pitch;
-    silk_memcpy( Wsig_ptr, x_buf_ptr, ( psEnc->sCmn.pitch_LPC_win_length - silk_LSHIFT( psEnc->sCmn.la_pitch, 1 ) ) * sizeof( opus_int16 ) );
+    x_ptr += psEnc->sCmn.la_pitch;
+    silk_memcpy( Wsig_ptr, x_ptr, ( psEnc->sCmn.pitch_LPC_win_length - silk_LSHIFT( psEnc->sCmn.la_pitch, 1 ) ) * sizeof( opus_int16 ) );
 
     /* Last LA_LTP samples */
     Wsig_ptr  += psEnc->sCmn.pitch_LPC_win_length - silk_LSHIFT( psEnc->sCmn.la_pitch, 1 );
-    x_buf_ptr += psEnc->sCmn.pitch_LPC_win_length - silk_LSHIFT( psEnc->sCmn.la_pitch, 1 );
-    silk_apply_sine_window( Wsig_ptr, x_buf_ptr, 2, psEnc->sCmn.la_pitch );
+    x_ptr += psEnc->sCmn.pitch_LPC_win_length - silk_LSHIFT( psEnc->sCmn.la_pitch, 1 );
+    silk_apply_sine_window( Wsig_ptr, x_ptr, 2, psEnc->sCmn.la_pitch );
 
     /* Calculate autocorrelation sequence */
     silk_autocorr( auto_corr, &scale, Wsig, psEnc->sCmn.pitch_LPC_win_length, psEnc->sCmn.pitchEstimationLPCOrder + 1, arch );
@@ -112,7 +110,7 @@ void silk_find_pitch_lags_FIX(
     /*****************************************/
     /* LPC analysis filtering                */
     /*****************************************/
-    silk_LPC_analysis_filter( res, x_buf, A_Q12, buf_len, psEnc->sCmn.pitchEstimationLPCOrder, psEnc->sCmn.arch );
+    silk_LPC_analysis_filter( res, x, A_Q12, buf_len, psEnc->sCmn.pitchEstimationLPCOrder, psEnc->sCmn.arch );
 
     if( psEnc->sCmn.indices.signalType != TYPE_NO_VOICE_ACTIVITY && psEnc->sCmn.first_frame_after_reset == 0 ) {
         /* Threshold for pitch estimator */
diff --git a/silk/fixed/find_pred_coefs_FIX.c b/silk/fixed/find_pred_coefs_FIX.c
index 51a656f5..917dee08 100644
--- a/silk/fixed/find_pred_coefs_FIX.c
+++ b/silk/fixed/find_pred_coefs_FIX.c
@@ -86,7 +86,7 @@ void silk_find_pred_coefs_FIX(
         ALLOC( XXLTP_Q17, psEnc->sCmn.nb_subfr * LTP_ORDER * LTP_ORDER, opus_int32 );
 
         /* LTP analysis */
-        silk_find_LTP_FIX( XXLTP_Q17, xXLTP_Q17, &res_pitch[ psEnc->sCmn.ltp_mem_length ], 
+        silk_find_LTP_FIX( XXLTP_Q17, xXLTP_Q17, res_pitch, 
 			psEncCtrl->pitchL, psEnc->sCmn.subfr_length, psEnc->sCmn.nb_subfr, psEnc->sCmn.arch );
 
         /* Quantize LTP gain parameters */
diff --git a/silk/float/encode_frame_FLP.c b/silk/float/encode_frame_FLP.c
index 61b9b265..8c44a191 100644
--- a/silk/float/encode_frame_FLP.c
+++ b/silk/float/encode_frame_FLP.c
@@ -139,7 +139,7 @@ opus_int silk_encode_frame_FLP(
         /***************************************************/
         /* Find linear prediction coefficients (LPC + LTP) */
         /***************************************************/
-        silk_find_pred_coefs_FLP( psEnc, &sEncCtrl, res_pitch, x_frame, condCoding );
+        silk_find_pred_coefs_FLP( psEnc, &sEncCtrl, res_pitch_frame, x_frame, condCoding );
 
         /****************************************/
         /* Process gains                        */
diff --git a/silk/float/find_pred_coefs_FLP.c b/silk/float/find_pred_coefs_FLP.c
index fc0710bc..9fb53232 100644
--- a/silk/float/find_pred_coefs_FLP.c
+++ b/silk/float/find_pred_coefs_FLP.c
@@ -63,8 +63,7 @@ void silk_find_pred_coefs_FLP(
         silk_assert( psEnc->sCmn.ltp_mem_length - psEnc->sCmn.predictLPCOrder >= psEncCtrl->pitchL[ 0 ] + LTP_ORDER / 2 );
 
 		/* LTP analysis */
-        silk_find_LTP_FLP( XXLTP, xXLTP, &res_pitch[ psEnc->sCmn.ltp_mem_length ],
-            psEncCtrl->pitchL, psEnc->sCmn.subfr_length, psEnc->sCmn.nb_subfr );
+        silk_find_LTP_FLP( XXLTP, xXLTP, res_pitch, psEncCtrl->pitchL, psEnc->sCmn.subfr_length, psEnc->sCmn.nb_subfr );
 
         /* Quantize LTP gain parameters */
         silk_quant_LTP_gains_FLP( psEncCtrl->LTPCoef, psEnc->sCmn.indices.LTPIndex, &psEnc->sCmn.indices.PERIndex,