avcodec: Constify AVCodecs

[ffmpeg] / libavcodec / truespeech.c

diff --git a/libavcodec/truespeech.c b/libavcodec/truespeech.c
index d4ddfcbf9c147dbe891e308a2517ea11959e4e60..5eac34fefcd104d8cdac98ed0664daee518430e8 100644 (file)
--- a/libavcodec/truespeech.c
+++ b/libavcodec/truespeech.c
@@ -21,6 +21,8 @@
 
 #include "libavutil/channel_layout.h"
 #include "libavutil/intreadwrite.h"
+#include "libavutil/mem_internal.h"
+
 #include "avcodec.h"
 #include "bswapdsp.h"
 #include "get_bits.h"
@@ -132,8 +134,7 @@ static void truespeech_correlate_filter(TSContext *dec)
         if(i > 0){
             memcpy(tmp, dec->cvector, i * sizeof(*tmp));
             for(j = 0; j < i; j++)
-                dec->cvector[j] = ((tmp[i - j - 1] * dec->vector[i]) +
-                                   (dec->cvector[j] << 15) + 0x4000) >> 15;
+                dec->cvector[j] += (tmp[i - j - 1] * dec->vector[i] + 0x4000) >> 15;
         }
         dec->cvector[i] = (8 - dec->vector[i]) >> 3;
     }
@@ -255,8 +256,8 @@ static void truespeech_synth(TSContext *dec, int16_t *out, int quart)
     for(i = 0; i < 60; i++){
         int sum = 0;
         for(k = 0; k < 8; k++)
-            sum += ptr0[k] * ptr1[k];
-        sum = (sum + (out[i] << 12) + 0x800) >> 12;
+            sum += ptr0[k] * (unsigned)ptr1[k];
+        sum = out[i] + ((int)(sum + 0x800U) >> 12);
         out[i] = av_clip(sum, -0x7FFE, 0x7FFE);
         for(k = 7; k > 0; k--)
             ptr0[k] = ptr0[k - 1];
@@ -274,7 +275,7 @@ static void truespeech_synth(TSContext *dec, int16_t *out, int quart)
         for(k = 7; k > 0; k--)
             ptr0[k] = ptr0[k - 1];
         ptr0[0] = out[i];
-        out[i] = ((out[i] << 12) - sum) >> 12;
+        out[i] += (- sum) >> 12;
     }
 
     for(i = 0; i < 8; i++)
@@ -282,7 +283,7 @@ static void truespeech_synth(TSContext *dec, int16_t *out, int quart)
 
     ptr0 = dec->tmp3;
     for(i = 0; i < 60; i++){
-        int sum = out[i] << 12;
+        int sum = out[i] * (1 << 12);
         for(k = 0; k < 8; k++)
             sum += ptr0[k] * t[k];
         for(k = 7; k > 0; k--)
@@ -354,7 +355,7 @@ static int truespeech_decode_frame(AVCodecContext *avctx, void *data,
     return buf_size;
 }
 
-AVCodec ff_truespeech_decoder = {
+const AVCodec ff_truespeech_decoder = {
     .name           = "truespeech",
     .long_name      = NULL_IF_CONFIG_SMALL("DSP Group TrueSpeech"),
     .type           = AVMEDIA_TYPE_AUDIO,