libavcodec/mpegaudio: change CONFIG_FLOAT to USE_FLOAT

The CONFIG_ name-space is set by configure, so its better to use a
different prefix here.
This also unifies the encoder & decoder define that is used
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

libavcodec/mpegaudio.h

@@ -26,8 +26,8 @@
 #ifndef AVCODEC_MPEGAUDIO_H
 #define AVCODEC_MPEGAUDIO_H
 
-#ifndef CONFIG_FLOAT
-#   define CONFIG_FLOAT 0
+#ifndef USE_FLOATS
+#   define USE_FLOATS 0
 #endif
 
 #include <stdint.h>
@@ -58,7 +58,7 @@
 
 #define FIX(a)   ((int)((a) * FRAC_ONE))
 
-#if CONFIG_FLOAT
+#if USE_FLOATS
 #   define INTFLOAT float
 typedef float MPA_INT;
 typedef float OUT_INT;

libavcodec/mpegaudiodec_fixed.c

@@ -21,7 +21,7 @@
 #include "config.h"
 #include "libavutil/samplefmt.h"
 
-#define CONFIG_FLOAT 0
+#define USE_FLOATS 0
 
 #include "mpegaudio.h"
 

libavcodec/mpegaudiodec_float.c

@@ -22,7 +22,7 @@
 #include "config.h"
 #include "libavutil/samplefmt.h"
 
-#define CONFIG_FLOAT 1
+#define USE_FLOATS 1
 
 #include "mpegaudio.h"
 

libavcodec/mpegaudiodec_template.c

@@ -392,7 +392,7 @@ static av_cold void decode_init_static(void)
         ci = ci_table[i];
         cs = 1.0 / sqrt(1.0 + ci * ci);
         ca = cs * ci;
-#if !CONFIG_FLOAT
+#if !USE_FLOATS
         csa_table[i][0] = FIXHR(cs/4);
         csa_table[i][1] = FIXHR(ca/4);
         csa_table[i][2] = FIXHR(ca/4) + FIXHR(cs/4);
@@ -828,7 +828,7 @@ static void switch_buffer(MPADecodeContext *s, int *pos, int *end_pos,
                 v = -v;
             *dst = v;
 */
-#if CONFIG_FLOAT
+#if USE_FLOATS
 #define READ_FLIP_SIGN(dst,src)                     \
     v = AV_RN32A(src) ^ (get_bits1(&s->gb) << 31);  \
     AV_WN32A(dst, v);
@@ -1137,7 +1137,7 @@ found2:
         /* ms stereo ONLY */
         /* NOTE: the 1/sqrt(2) normalization factor is included in the
            global gain */
-#if CONFIG_FLOAT
+#if USE_FLOATS
        s->fdsp.butterflies_float(g0->sb_hybrid, g1->sb_hybrid, 576);
 #else
         tab0 = g0->sb_hybrid;
@@ -1152,7 +1152,7 @@ found2:
     }
 }
 
-#if CONFIG_FLOAT
+#if USE_FLOATS
 #if HAVE_MIPSFPU
 #   include "mips/compute_antialias_float.h"
 #endif /* HAVE_MIPSFPU */
@@ -1160,10 +1160,10 @@ found2:
 #if HAVE_MIPSDSPR1
 #   include "mips/compute_antialias_fixed.h"
 #endif /* HAVE_MIPSDSPR1 */
-#endif /* CONFIG_FLOAT */
+#endif /* USE_FLOATS */
 
 #ifndef compute_antialias
-#if CONFIG_FLOAT
+#if USE_FLOATS
 #define AA(j) do {                                                      \
         float tmp0 = ptr[-1-j];                                         \
         float tmp1 = ptr[   j];                                         \

libavcodec/mpegaudiodsp_fixed.c

@@ -16,5 +16,5 @@
  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
  */
 
-#define CONFIG_FLOAT 0
+#define USE_FLOATS 0
 #include "mpegaudiodsp_template.c"

libavcodec/mpegaudiodsp_float.c

@@ -16,5 +16,5 @@
  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
  */
 
-#define CONFIG_FLOAT 1
+#define USE_FLOATS 1
 #include "mpegaudiodsp_template.c"

libavcodec/mpegaudiodsp_template.c

@@ -27,7 +27,7 @@
 #include "mpegaudiodsp.h"
 #include "mpegaudio.h"
 
-#if CONFIG_FLOAT
+#if USE_FLOATS
 #define RENAME(n) n##_float
 
 static inline float round_sample(float *sum)
@@ -125,7 +125,7 @@ void RENAME(ff_mpadsp_apply_window)(MPA_INT *synth_buf, MPA_INT *window,
     register const MPA_INT *w, *w2, *p;
     int j;
     OUT_INT *samples2;
-#if CONFIG_FLOAT
+#if USE_FLOATS
     float sum, sum2;
 #else
     int64_t sum, sum2;
@@ -200,7 +200,7 @@ av_cold void RENAME(ff_mpa_synth_init)(MPA_INT *window)
     for(i=0;i<257;i++) {
         INTFLOAT v;
         v = ff_mpa_enwindow[i];
-#if CONFIG_FLOAT
+#if USE_FLOATS
         v *= 1.0 / (1LL<<(16 + FRAC_BITS));
 #endif
         window[i] = v;

libavcodec/mpegaudioenc_float.c

@@ -19,7 +19,7 @@
  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
  */
 
-#define USE_FLOATS
+#define USE_FLOATS 1
 #include "mpegaudioenc_template.c"
 
 AVCodec ff_mp2_encoder = {

libavcodec/mpegaudioenc_template.c

@@ -64,7 +64,7 @@ typedef struct MpegAudioContext {
     int16_t filter_bank[512];
     int scale_factor_table[64];
     unsigned char scale_diff_table[128];
-#ifdef USE_FLOATS
+#if USE_FLOATS
     float scale_factor_inv_table[64];
 #else
     int8_t scale_factor_shift[64];
@@ -158,7 +158,7 @@ static av_cold int MPA_encode_init(AVCodecContext *avctx)
         if (v <= 0)
             v = 1;
         s->scale_factor_table[i] = v;
-#ifdef USE_FLOATS
+#if USE_FLOATS
         s->scale_factor_inv_table[i] = exp2(-(3 - i) / 3.0) / (float)(1 << 20);
 #else
 #define P 15
@@ -681,7 +681,7 @@ static void encode_frame(MpegAudioContext *s,
                         for(m=0;m<3;m++) {
                             sample = s->sb_samples[ch][k][l + m][i];
                             /* divide by scale factor */
-#ifdef USE_FLOATS
+#if USE_FLOATS
                             {
                                 float a;
                                 a = (float)sample * s->scale_factor_inv_table[s->scale_factors[ch][i][k]];