Remove cast, now tables are signed.

Originally committed as revision 15252 to svn://svn.ffmpeg.org/ffmpeg/trunk

libavcodec/mace.c

@@ -260,12 +260,12 @@ static inline int16_t mace_broken_clip_int16(int n)
 
 static void chomp3(ChannelData *ctx, int16_t *output, uint8_t val,
                    const uint16_t tab1[],
-                   const uint16_t *tab2, int tab2_stride,
+                   const int16_t *tab2, int tab2_stride,
                    uint32_t numChannels)
 {
     short current;
 
-    current = (short)tab2[((ctx->index & 0x7f0) >> 4)*tab2_stride + val];
+    current = tab2[((ctx->index & 0x7f0) >> 4)*tab2_stride + val];
 
     current = mace_broken_clip_int16(current + ctx->lev);
 
@@ -277,12 +277,12 @@ static void chomp3(ChannelData *ctx, int16_t *output, uint8_t val,
 
 static void chomp6(ChannelData *ctx, int16_t *output, uint8_t val,
                    const uint16_t tab1[],
-                   const uint16_t *tab2, int tab2_stride,
+                   const int16_t *tab2, int tab2_stride,
                    uint32_t numChannels)
 {
     short current;
 
-    current = (short)tab2[((ctx->index & 0x7f0) >> 4)*tab2_stride + val];
+    current = tab2[((ctx->index & 0x7f0) >> 4)*tab2_stride + val];
 
     if ((ctx->previous ^ current) >= 0) {
         ctx->factor = FFMIN(ctx->factor + 506, 32767);