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avcodec/avfft: Add simple self test

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Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
This commit is contained in:
Michael Niedermayer 2015-02-06 18:48:12 +01:00
parent 23659fdb81
commit 9bc7ee8a98
2 changed files with 35 additions and 0 deletions
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1
libavcodec/Makefile
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@ -862,6 +862,7 @@ SKIPHEADERS-$(CONFIG_VDPAU) += vdpau.h vdpau_internal.h
TESTPROGS = imgconvert \ TESTPROGS = imgconvert \
options \ options \
avfft \
TESTPROGS-$(CONFIG_CABAC) += cabac TESTPROGS-$(CONFIG_CABAC) += cabac

34
libavcodec/avfft.c
View File

@ -142,4 +142,38 @@ av_cold void av_dct_end(DCTContext *s)
} }
} }
#ifdef TEST
int main(int argc, char **argv)
{
int i;
#define LEN 1024
FFTSample *ref = av_malloc_array(LEN, sizeof(*ref));
FFTSample *data = av_malloc_array(LEN, sizeof(*data));
RDFTContext *rdft_context = av_rdft_init(10, DFT_R2C);
RDFTContext *irdft_context = av_rdft_init(10, IDFT_C2R);
if (!ref || !data || !rdft_context || !irdft_context)
return 2;
for (i=0; i<LEN; i++) {
ref[i] = data[i] = i*456 + 123 + i*i;
}
av_rdft_calc(rdft_context, data);
av_rdft_calc(irdft_context, data);
for (i=0; i<LEN; i++) {
if (fabs(ref[i] - data[i]/LEN*2) > 1) {
fprintf(stderr, "Failed at %d (%f %f)\n", i, ref[i], data[i]/LEN*2);
return 1;
}
}
av_rdft_end(rdft_context);
av_rdft_end(irdft_context);
av_free(data);
av_free(ref);
return 0;
}
#endif
#endif /* CONFIG_DCT */ #endif /* CONFIG_DCT */