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Code Issues Releases Activity

Cosmetics: move ff_dct_init() to the bottom of the file

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Originally committed as revision 22616 to svn://svn.ffmpeg.org/ffmpeg/trunk
This commit is contained in:
Vitor Sessak 2010-03-21 11:28:38 +00:00
parent 2758004fce
commit 89d7df7c74
1 changed files with 25 additions and 25 deletions
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50
libavcodec/dct.c
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@ -31,31 +31,6 @@
#include "libavutil/mathematics.h"
#include "fft.h"
av_cold int ff_dct_init(DCTContext *s, int nbits, int inverse)
{
int n = 1 << nbits;
int i;
s->nbits = nbits;
s->inverse = inverse;
ff_init_ff_cos_tabs(nbits+2);
s->costab = ff_cos_tabs[nbits+2];
s->csc2 = av_malloc(n/2 * sizeof(FFTSample));
if (ff_rdft_init(&s->rdft, nbits, inverse) < 0) {
av_free(s->csc2);
return -1;
}
for (i = 0; i < n/2; i++)
s->csc2[i] = 0.5 / sin((M_PI / (2*n) * (2*i + 1)));
return 0;
}
/* sin((M_PI * x / (2*n)) */
#define SIN(s,n,x) (s->costab[(n) - (x)])
@ -133,6 +108,31 @@ void ff_dct_calc(DCTContext *s, FFTSample *data)
ff_dct_calc_c(s, data);
}
av_cold int ff_dct_init(DCTContext *s, int nbits, int inverse)
{
int n = 1 << nbits;
int i;
s->nbits = nbits;
s->inverse = inverse;
ff_init_ff_cos_tabs(nbits+2);
s->costab = ff_cos_tabs[nbits+2];
s->csc2 = av_malloc(n/2 * sizeof(FFTSample));
if (ff_rdft_init(&s->rdft, nbits, inverse) < 0) {
av_free(s->csc2);
return -1;
}
for (i = 0; i < n/2; i++)
s->csc2[i] = 0.5 / sin((M_PI / (2*n) * (2*i + 1)));
return 0;
}
av_cold void ff_dct_end(DCTContext *s)
{
ff_rdft_end(&s->rdft);