Merge changes I903353c5,I822dcc74

* changes:
  stagefright amrnb: Properly negate all values
  stagefright amrnb: Fix a bug on architectures where long is 64 bit
diff --git a/media/libstagefright/codecs/amrnb/common/src/az_lsp.cpp b/media/libstagefright/codecs/amrnb/common/src/az_lsp.cpp
index bd99b30..4135f30 100644
--- a/media/libstagefright/codecs/amrnb/common/src/az_lsp.cpp
+++ b/media/libstagefright/codecs/amrnb/common/src/az_lsp.cpp
@@ -299,7 +299,7 @@
     t0 += (Word32) * (p_f) << 13;
 
 
-    if ((UWord32)(t0 - 0xfe000000L) < 0x01ffffffL -  0xfe000000L)
+    if ((UWord32)(t0 - 0xfe000000L) < (UWord32)0x03ffffffL)
     {
         cheb = (Word16)(t0 >> 10);
     }
diff --git a/media/libstagefright/codecs/amrnb/enc/src/set_sign.cpp b/media/libstagefright/codecs/amrnb/enc/src/set_sign.cpp
index dedf91a..d626de3 100644
--- a/media/libstagefright/codecs/amrnb/enc/src/set_sign.cpp
+++ b/media/libstagefright/codecs/amrnb/enc/src/set_sign.cpp
@@ -552,10 +552,10 @@
         else
         {
             *(p_sign--) = -32767;                     /* sign = -1 */
-            cor = - (cor);
+            cor = negate(cor);
 
             /* modify dn[] according to the fixed sign */
-            dn[i] = - val;
+            dn[i] = negate(val);
         }
 
         *(p_en--) = cor;