avcodec: Constify AVCodecs

[ffmpeg] / libavcodec / aacdec_fixed.c

diff --git a/libavcodec/aacdec_fixed.c b/libavcodec/aacdec_fixed.c
index 2c594c67922050dac5a7f572ea823f2a3cafd830..00257a547864a873dca32c970109ffd46de6a146 100644 (file)
--- a/libavcodec/aacdec_fixed.c
+++ b/libavcodec/aacdec_fixed.c
@@ -70,7 +70,7 @@
 #include "fft.h"
 #include "lpc.h"
 #include "kbdwin.h"
-#include "sinewin.h"
+#include "sinewin_fixed_tablegen.h"
 
 #include "aac.h"
 #include "aactab.h"
@@ -86,6 +86,9 @@
 #include <math.h>
 #include <string.h>
 
+DECLARE_ALIGNED(32, static int, AAC_RENAME2(aac_kbd_long_1024))[1024];
+DECLARE_ALIGNED(32, static int, AAC_RENAME2(aac_kbd_short_128))[128];
+
 static av_always_inline void reset_predict_state(PredictorState *ps)
 {
     ps->r0.mant   = 0;
@@ -155,9 +158,9 @@ static void vector_pow43(int *coefs, int len)
     for (i=0; i<len; i++) {
         coef = coefs[i];
         if (coef < 0)
-            coef = -(int)ff_cbrt_tab_fixed[-coef];
+            coef = -(int)ff_cbrt_tab_fixed[(-coef) & 8191];
         else
-            coef = (int)ff_cbrt_tab_fixed[coef];
+            coef =  (int)ff_cbrt_tab_fixed[  coef  & 8191];
         coefs[i] = coef;
     }
 }
@@ -195,12 +198,12 @@ static void subband_scale(int *dst, int *src, int scale, int offset, int len, vo
 
 static void noise_scale(int *coefs, int scale, int band_energy, int len)
 {
-    int ssign = scale < 0 ? -1 : 1;
-    int s = FFABS(scale);
+    int s = -scale;
     unsigned int round;
     int i, out, c = exp2tab[s & 3];
     int nlz = 0;
 
+    av_assert0(s >= 0);
     while (band_energy > 0x7fff) {
         band_energy >>= 1;
         nlz++;
@@ -216,15 +219,20 @@ static void noise_scale(int *coefs, int scale, int band_energy, int len)
         round = s ? 1 << (s-1) : 0;
         for (i=0; i<len; i++) {
             out = (int)(((int64_t)coefs[i] * c) >> 32);
-            coefs[i] = ((int)(out+round) >> s) * ssign;
+            coefs[i] = -((int)(out+round) >> s);
         }
     }
     else {
         s = s + 32;
-        round = 1 << (s-1);
-        for (i=0; i<len; i++) {
-            out = (int)((int64_t)((int64_t)coefs[i] * c + round) >> s);
-            coefs[i] = out * ssign;
+        if (s > 0) {
+            round = 1 << (s-1);
+            for (i=0; i<len; i++) {
+                out = (int)((int64_t)((int64_t)coefs[i] * c + round) >> s);
+                coefs[i] = -out;
+            }
+        } else {
+            for (i=0; i<len; i++)
+                coefs[i] = -(int64_t)coefs[i] * c * (1 << -s);
         }
     }
 }
@@ -443,7 +451,7 @@ static void apply_independent_coupling_fixed(AACContext *ac,
 
 #include "aacdec_template.c"
 
-AVCodec ff_aac_fixed_decoder = {
+const AVCodec ff_aac_fixed_decoder = {
     .name            = "aac_fixed",
     .long_name       = NULL_IF_CONFIG_SMALL("AAC (Advanced Audio Coding)"),
     .type            = AVMEDIA_TYPE_AUDIO,
@@ -456,7 +464,7 @@ AVCodec ff_aac_fixed_decoder = {
         AV_SAMPLE_FMT_S32P, AV_SAMPLE_FMT_NONE
     },
     .capabilities    = AV_CODEC_CAP_CHANNEL_CONF | AV_CODEC_CAP_DR1,
-    .caps_internal   = FF_CODEC_CAP_INIT_THREADSAFE,
+    .caps_internal   = FF_CODEC_CAP_INIT_THREADSAFE | FF_CODEC_CAP_INIT_CLEANUP,
     .channel_layouts = aac_channel_layout,
     .profiles        = NULL_IF_CONFIG_SMALL(ff_aac_profiles),
     .flush = flush,