Codec2/AUtils: rename nom to num for 'numerator'

Change-Id: Ic357384ad35826fb668f43ad761365c8bc349587
diff --git a/media/libstagefright/codec2/include/C2Param.h b/media/libstagefright/codec2/include/C2Param.h
index 1d6e2eb..4d9f707 100644
--- a/media/libstagefright/codec2/include/C2Param.h
+++ b/media/libstagefright/codec2/include/C2Param.h
@@ -1308,7 +1308,7 @@
         Primitive min;
         Primitive max;
         Primitive step;
-        Primitive nom;
+        Primitive num;
         Primitive denom;
     } range;
     std::vector<Primitive> values;
@@ -1323,9 +1323,9 @@
           range{min, max, step, (T)1, (T)1} { }
 
     template<typename T>
-    C2FieldSupportedValues(T min, T max, T nom, T den) :
+    C2FieldSupportedValues(T min, T max, T num, T den) :
         type(RANGE),
-        range{min, max, (T)0, nom, den} { }
+        range{min, max, (T)0, num, den} { }
 
     template<typename T>
     C2FieldSupportedValues(bool flags, std::initializer_list<T> list)
diff --git a/media/libstagefright/codec2/tests/C2ComponentInterface_test.cpp b/media/libstagefright/codec2/tests/C2ComponentInterface_test.cpp
index bf352af..7da824b 100644
--- a/media/libstagefright/codec2/tests/C2ComponentInterface_test.cpp
+++ b/media/libstagefright/codec2/tests/C2ComponentInterface_test.cpp
@@ -410,17 +410,17 @@
             // 1. integer geometric case
             // 2. float geometric case
 
-            auto nom = prim2Value(range.nom);
+            auto num = prim2Value(range.num);
             auto denom = prim2Value(range.denom);
 
-            // If both range.nom and range.denom are 1 and step is 0, we should use
+            // If both range.num and range.denom are 1 and step is 0, we should use
             // VALUES, shouldn't we?
-            ASSERT_FALSE(nom == 1 && denom == 1);
+            ASSERT_FALSE(num == 1 && denom == 1);
 
-            // (nom / denom) is not less than 1.
+            // (num / denom) is not less than 1.
             ASSERT_FALSE(denom == 0);
-            ASSERT_LE(denom, nom);
-            for (auto v = rmin; v <= rmax; v = v * nom / denom) {
+            ASSERT_LE(denom, num);
+            for (auto v = rmin; v <= rmax; v = v * num / denom) {
                 validValues->emplace_back(v);
             }
 
diff --git a/media/libstagefright/codec2/tests/C2Param_test.cpp b/media/libstagefright/codec2/tests/C2Param_test.cpp
index e3f9ca6..1a29add 100644
--- a/media/libstagefright/codec2/tests/C2Param_test.cpp
+++ b/media/libstagefright/codec2/tests/C2Param_test.cpp
@@ -2622,8 +2622,8 @@
         if (get(sv.range.step, t) != std::is_integral<T>::value) {
             cout << ":" << get(sv.range.step, t);
         }
-        if (get(sv.range.nom, t) != 1 || get(sv.range.denom, t) != 1) {
-            cout << ":" << get(sv.range.nom, t) << "/" << get(sv.range.denom, t);
+        if (get(sv.range.num, t) != 1 || get(sv.range.denom, t) != 1) {
+            cout << ":" << get(sv.range.num, t) << "/" << get(sv.range.denom, t);
         }
         cout << get(sv.range.max, t) << ")";
     }
@@ -2769,7 +2769,7 @@
     Uint32TestInfo t;
     std::vector<C2FieldSupportedValues> values;
     values.push_back(C2FieldSupportedValues(0, 10, 1));  // min, max, step
-    values.push_back(C2FieldSupportedValues(1, 64, 2, 1));  // min, max, nom, den
+    values.push_back(C2FieldSupportedValues(1, 64, 2, 1));  // min, max, num, den
     values.push_back(C2FieldSupportedValues(false, {1, 2, 3}));  // flags, std::initializer_list
     uint32_t val[] = {1, 3, 5, 7};
     std::vector<uint32_t> v(std::begin(val), std::end(val));
diff --git a/media/libstagefright/codecs/avcdec/C2SoftAvcDec.cpp b/media/libstagefright/codecs/avcdec/C2SoftAvcDec.cpp
index 4f64f6e..306d0a5 100644
--- a/media/libstagefright/codecs/avcdec/C2SoftAvcDec.cpp
+++ b/media/libstagefright/codecs/avcdec/C2SoftAvcDec.cpp
@@ -99,7 +99,7 @@
             }
         case C2FieldSupportedValues::RANGE:
             {
-                // TODO: handle step, nom, denom
+                // TODO: handle step, num, denom
                 return Getter<T>::get(supportedValues.range.min) <= value
                         && value <= Getter<T>::get(supportedValues.range.max);
             }
diff --git a/media/libstagefright/foundation/include/media/stagefright/foundation/AUtils.h b/media/libstagefright/foundation/include/media/stagefright/foundation/AUtils.h
index 255a0f4..af6b357 100644
--- a/media/libstagefright/foundation/include/media/stagefright/foundation/AUtils.h
+++ b/media/libstagefright/foundation/include/media/stagefright/foundation/AUtils.h
@@ -22,28 +22,28 @@
 
 /* T must be integer type, den must not be 0 */
 template<class T>
-inline static const T divRound(const T &nom, const T &den) {
-    if ((nom >= 0) ^ (den >= 0)) {
-        return (nom - den / 2) / den;
+inline static const T divRound(const T &num, const T &den) {
+    if ((num >= 0) ^ (den >= 0)) {
+        return (num - den / 2) / den;
     } else {
-        return (nom + den / 2) / den;
+        return (num + den / 2) / den;
     }
 }
 
-/* == ceil(nom / den). T must be integer type, den must not be 0 */
+/* == ceil(num / den). T must be integer type, den must not be 0 */
 template<class T>
-inline static const T divUp(const T &nom, const T &den) {
+inline static const T divUp(const T &num, const T &den) {
     if (den < 0) {
-        return (nom < 0 ? nom + den + 1 : nom) / den;
+        return (num < 0 ? num + den + 1 : num) / den;
     } else {
-        return (nom < 0 ? nom : nom + den - 1) / den;
+        return (num < 0 ? num : num + den - 1) / den;
     }
 }
 
-/* == ceil(nom / den) * den. T must be integer type, alignment must be positive power of 2 */
+/* == ceil(num / den) * den. T must be integer type, alignment must be positive power of 2 */
 template<class T, class U>
-inline static const T align(const T &nom, const U &den) {
-    return (nom + (T)(den - 1)) & (T)~(den - 1);
+inline static const T align(const T &num, const U &den) {
+    return (num + (T)(den - 1)) & (T)~(den - 1);
 }
 
 template<class T>