imdct.c: Remove fft().

It has only one caller, imdct_half(), so get rid of the trivial
function. Dedox the static imdct_half() while at it.

diff --git a/imdct.c b/imdct.c
index 2e1089f1f818be4bcdeb20be3d4d7a865943e00e..32bec8c780d01c9a796290a04eb01a1e329e5b0d 100644 (file)
--- a/imdct.c
+++ b/imdct.c
@@ -239,11 +239,6 @@ static void (*fft_dispatch[]) (struct fft_complex *) = {
        fft2048, fft4096, fft8192, fft16384, fft32768, fft65536,
 };
 
-static void fft(struct fft_context *s, struct fft_complex *z)
-{
-       fft_dispatch[s->nbits - 2] (z);
-}
-
 /* complex multiplication: p = a * b */
 #define CMUL(pre, pim, are, aim, bre, bim) \
 {\
@@ -255,13 +250,9 @@ static void fft(struct fft_context *s, struct fft_complex *z)
        (pim) = _are * _bim + _aim * _bre;\
 }
 
-/**
- * Compute the middle half of the inverse MDCT of size N = 2^nbits
- *
- * Thus excluding the parts that can be derived by symmetry.
- *
- * \param output N/2 samples.
- * \param input N/2 samples.
+/*
+ * Compute the middle half of the inverse MDCT, excluding the parts that can be
+ * derived by symmetry.
  */
 static void imdct_half(struct mdct_context *s, fftsample_t *output,
                const fftsample_t *input)
@@ -287,7 +278,7 @@ static void imdct_half(struct mdct_context *s, fftsample_t *output,
                in1 += 2;
                in2 -= 2;
        }
-       fft(&s->fft, z);
+       fft_dispatch[s->fft.nbits - 2](z);
 
        /* post rotation + reordering */
        for (k = 0; k < n8; k++) {