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rdft: Move some variables into a separate block

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This avoids an unused variable warning with hardcoded tables.
This commit is contained in:
Diego Biurrun 2014-08-29 16:56:20 +02:00
parent b574e1e97e
commit 096a1d5b46
1 changed files with 5 additions and 4 deletions
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9
libavcodec/rdft.c
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@ -99,8 +99,6 @@ static void rdft_calc_c(RDFTContext *s, FFTSample *data)
av_cold int ff_rdft_init(RDFTContext *s, int nbits, enum RDFTransformType trans) av_cold int ff_rdft_init(RDFTContext *s, int nbits, enum RDFTransformType trans)
{ {
int n = 1 << nbits; int n = 1 << nbits;
int i;
const double theta = (trans == DFT_R2C || trans == DFT_C2R ? -1 : 1)*2*M_PI/n;
s->nbits = nbits; s->nbits = nbits;
s->inverse = trans == IDFT_C2R || trans == DFT_C2R; s->inverse = trans == IDFT_C2R || trans == DFT_C2R;
@ -116,8 +114,11 @@ av_cold int ff_rdft_init(RDFTContext *s, int nbits, enum RDFTransformType trans)
s->tcos = ff_cos_tabs[nbits]; s->tcos = ff_cos_tabs[nbits];
s->tsin = ff_sin_tabs[nbits]+(trans == DFT_R2C || trans == DFT_C2R)*(n>>2); s->tsin = ff_sin_tabs[nbits]+(trans == DFT_R2C || trans == DFT_C2R)*(n>>2);
#if !CONFIG_HARDCODED_TABLES #if !CONFIG_HARDCODED_TABLES
for (i = 0; i < (n>>2); i++) { {
s->tsin[i] = sin(i*theta); int i;
const double theta = (trans == DFT_R2C || trans == DFT_C2R ? -1 : 1) * 2 * M_PI / n;
for (i = 0; i < (n >> 2); i++)
s->tsin[i] = sin(i * theta);
} }
#endif #endif
s->rdft_calc = rdft_calc_c; s->rdft_calc = rdft_calc_c;