0001-Explicitly-use-signed-char-instead-of-char-where-nee.patch

From ffd3f71103302082e6bb2460f9a0ababc0311629 Mon Sep 17 00:00:00 2001
From: Mohammad AlSaleh <CE.Mohammad.AlSaleh@gmail.com>
Date: Mon, 22 Jun 2020 04:00:44 +0300
Subject: [PATCH] Explicitly use `signed char` instead of `char` where needed

 Should fix ARM builds.

Signed-off-by: Mohammad AlSaleh <CE.Mohammad.AlSaleh@gmail.com>
---
 src/lib/exhaleEnc.h          | 2 +-
 src/lib/linearPrediction.cpp | 8 ++++----
 2 files changed, 5 insertions(+), 5 deletions(-)

diff --git a/src/lib/exhaleEnc.h b/src/lib/exhaleEnc.h
index a82b87f..da7fc1a 100644
--- a/src/lib/exhaleEnc.h
+++ b/src/lib/exhaleEnc.h
@@ -28,7 +28,7 @@
 #define WIN_SCALE double (1 << 23)
 
 // channelConfigurationIndex setup
-typedef enum USAC_CCI : char
+typedef enum USAC_CCI : signed char
 {
   CCI_UNDEF = -1,
   CCI_CONF  = 0,  // channel-to-speaker mapping defined in UsacChannelConfig() (not to be used here!)
diff --git a/src/lib/linearPrediction.cpp b/src/lib/linearPrediction.cpp
index b715691..ecc9cde 100644
--- a/src/lib/linearPrediction.cpp
+++ b/src/lib/linearPrediction.cpp
@@ -24,7 +24,7 @@ static const short tnsQuantCoeff4[17/*2^4+1*/] = { // = round (2^11 * sin (x * p
 static const short* tnsQuantCoeff[2/*coefRes*/] = {tnsQuantCoeff3, tnsQuantCoeff4};
 
 // ISO/IEC 14496-3, Sec. 4.6.9.3, 3-bit
-static const char tnsQuantIndex3[SCHAR_MAX + 1] = { // = round (asin (x / 64) * (x < 0 ? 9 : 7) / pi)
+static const signed char tnsQuantIndex3[SCHAR_MAX + 1] = { // = round (asin (x / 64) * (x < 0 ? 9 : 7) / pi)
   -4, -4, -4, -3, -3, -3, -3, -3, -3, -3, -3, -3, -3, -3, -2, -2, -2, -2, -2, -2, -2, -2, -2, -2, -2, -2, -2, -2, -2, -2, -2, -2,
   -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,
    0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,
@@ -32,14 +32,14 @@ static const char tnsQuantIndex3[SCHAR_MAX + 1] = { // = round (asin (x / 64) *
 };
 
 // ISO/IEC 14496-3, Sec. 4.6.9.3, 4-bit
-static const char tnsQuantIndex4[SCHAR_MAX + 1] = { // = round (asin (x / 64) * (x < 0 ? 17 : 15) / pi)
+static const signed char tnsQuantIndex4[SCHAR_MAX + 1] = { // = round (asin (x / 64) * (x < 0 ? 17 : 15) / pi)
   -8, -7, -7, -7, -6, -6, -6, -6, -6, -5, -5, -5, -5, -5, -5, -5, -4, -4, -4, -4, -4, -4, -4, -4, -4, -3, -3, -3, -3, -3, -3, -3,
   -3, -3, -3, -2, -2, -2, -2, -2, -2, -2, -2, -2, -2, -2, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,  0,  0,  0,  0,  0,  0,
    0,  0,  0,  0,  0,  0,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  2,  2,  2,  2,  2,  2,  2,  2,  2,  2,  2,  2,  3,
    3,  3,  3,  3,  3,  3,  3,  3,  3,  3,  4,  4,  4,  4,  4,  4,  4,  4,  4,  5,  5,  5,  5,  5,  5,  5,  6,  6,  6,  6,  7,  7
 };
 
-static const char* tnsQuantIndex[2/*coefRes*/] = {tnsQuantIndex3, tnsQuantIndex4};
+static const signed char* tnsQuantIndex[2/*coefRes*/] = {tnsQuantIndex3, tnsQuantIndex4};
 
 // static helper functions
 static int quantizeParCorCoeffs (const short* const parCorCoeffs, const uint16_t nCoeffs, const short bitDepth, int8_t* const quantCoeffs,
@@ -49,7 +49,7 @@ static int quantizeParCorCoeffs (const short* const parCorCoeffs, const uint16_t
   const unsigned tabIdx = (lowRes ? 0 : 1);
   const char  tabOffset = 4 << tabIdx;
   const short* coeffTab = tnsQuantCoeff[tabIdx];
-  const char*  indexTab = tnsQuantIndex[tabIdx];
+  const signed char*  indexTab = tnsQuantIndex[tabIdx];
   int dist0, dist1, distTotal = 0;
 
   for (uint16_t s = 0; s < nCoeffs; s++)
-- 
2.27.0