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fft-test: K&R formatting cosmetics
Also rearrange #includes into canonical order.
This commit is contained in:
Diego Biurrun
parent
c3c96deb5f
commit
6133d65861
@ -23,14 +23,8 @@
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* FFT and MDCT tests.
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*/
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#include "libavutil/cpu.h"
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#include "libavutil/mathematics.h"
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#include "libavutil/lfg.h"
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#include "libavutil/log.h"
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#include "libavutil/time.h"
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#include "fft.h"
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#include "dct.h"
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#include "rdft.h"
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#include "config.h"
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#include <math.h>
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#if HAVE_UNISTD_H
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#include <unistd.h>
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@ -39,24 +33,34 @@
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#include <stdlib.h>
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#include <string.h>
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#include "libavutil/cpu.h"
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#include "libavutil/lfg.h"
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#include "libavutil/log.h"
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#include "libavutil/mathematics.h"
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#include "libavutil/time.h"
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#include "dct.h"
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#include "fft.h"
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#include "rdft.h"
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/* reference fft */
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#define MUL16(a,b) ((a) * (b))
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#define MUL16(a, b) ((a) * (b))
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#define CMAC(pre, pim, are, aim, bre, bim) \
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{\
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pre += (MUL16(are, bre) - MUL16(aim, bim));\
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pim += (MUL16(are, bim) + MUL16(bre, aim));\
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}
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#define CMAC(pre, pim, are, aim, bre, bim) \
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{ \
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pre += (MUL16(are, bre) - MUL16(aim, bim)); \
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pim += (MUL16(are, bim) + MUL16(bre, aim)); \
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}
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#if FFT_FLOAT
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# define RANGE 1.0
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# define REF_SCALE(x, bits) (x)
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# define FMT "%10.6f"
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#define RANGE 1.0
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#define REF_SCALE(x, bits) (x)
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#define FMT "%10.6f"
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#else
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# define RANGE 16384
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# define REF_SCALE(x, bits) ((x) / (1<<(bits)))
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# define FMT "%6d"
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#define RANGE 16384
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#define REF_SCALE(x, bits) ((x) / (1 << (bits)))
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#define FMT "%6d"
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#endif
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static struct {
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@ -71,8 +75,8 @@ static int fft_ref_init(int nbits, int inverse)
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if (!exptab)
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return AVERROR(ENOMEM);
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for (i = 0; i < (n/2); i++) {
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double alpha = 2 * M_PI * (float)i / (float)n;
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for (i = 0; i < (n / 2); i++) {
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double alpha = 2 * M_PI * (float) i / (float) n;
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double c1 = cos(alpha), s1 = sin(alpha);
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if (!inverse)
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s1 = -s1;
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@ -116,9 +120,9 @@ static void imdct_ref(FFTSample *out, FFTSample *in, int nbits)
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for (i = 0; i < n; i++) {
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double sum = 0;
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for (k = 0; k < n/2; k++) {
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for (k = 0; k < n / 2; k++) {
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int a = (2 * i + 1 + (n / 2)) * (2 * k + 1);
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double f = cos(M_PI * a / (double)(2 * n));
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double f = cos(M_PI * a / (double) (2 * n));
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sum += f * in[k];
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}
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out[i] = REF_SCALE(-sum, nbits - 2);
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@ -131,7 +135,7 @@ static void mdct_ref(FFTSample *output, FFTSample *input, int nbits)
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int i, k, n = 1 << nbits;
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/* do it by hand */
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for (k = 0; k < n/2; k++) {
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for (k = 0; k < n / 2; k++) {
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double s = 0;
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for (i = 0; i < n; i++) {
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double a = (2 * M_PI * (2 * i + 1 + n / 2) * (2 * k + 1) / (4 * n));
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@ -158,6 +162,7 @@ static void idct_ref(float *output, float *input, int nbits)
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output[i] = 2 * s / n;
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}
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}
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static void dct_ref(float *output, float *input, int nbits)
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{
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int i, k, n = 1 << nbits;
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@ -175,10 +180,9 @@ static void dct_ref(float *output, float *input, int nbits)
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#endif /* CONFIG_DCT */
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#endif /* FFT_FLOAT */
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static FFTSample frandom(AVLFG *prng)
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{
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return (int16_t)av_lfg_get(prng) / 32768.0 * RANGE;
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return (int16_t) av_lfg_get(prng) / 32768.0 * RANGE;
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}
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static int check_diff(FFTSample *tab1, FFTSample *tab2, int n, double scale)
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@ -193,17 +197,18 @@ static int check_diff(FFTSample *tab1, FFTSample *tab2, int n, double scale)
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i, tab1[i], tab2[i]);
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err = 1;
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}
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error+= e*e;
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if(e>max) max= e;
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error += e * e;
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if (e > max)
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max = e;
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}
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av_log(NULL, AV_LOG_INFO, "max:%f e:%g\n", max, sqrt(error)/n);
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av_log(NULL, AV_LOG_INFO, "max:%f e:%g\n", max, sqrt(error) / n);
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return err;
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}
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static void help(void)
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{
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av_log(NULL, AV_LOG_INFO,"usage: fft-test [-h] [-s] [-i] [-n b]\n"
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av_log(NULL, AV_LOG_INFO,
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"usage: fft-test [-h] [-s] [-i] [-n b]\n"
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"-h print this help\n"
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"-s speed test\n"
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"-m (I)MDCT test\n"
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@ -211,8 +216,7 @@ static void help(void)
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"-r (I)RDFT test\n"
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"-i inverse transform test\n"
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"-n b set the transform size to 2^b\n"
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"-f x set scale factor for output data of (I)MDCT to x\n"
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);
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"-f x set scale factor for output data of (I)MDCT to x\n");
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}
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enum tf_transform {
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@ -244,11 +248,11 @@ int main(int argc, char **argv)
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av_lfg_init(&prng, 1);
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for(;;) {
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for (;;) {
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int c = getopt(argc, argv, "hsimrdn:f:c:");
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if (c == -1)
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break;
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switch(c) {
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switch (c) {
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case 'h':
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help();
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return 1;
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@ -285,10 +289,10 @@ int main(int argc, char **argv)
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}
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fft_size = 1 << fft_nbits;
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tab = av_malloc(fft_size * sizeof(FFTComplex));
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tab1 = av_malloc(fft_size * sizeof(FFTComplex));
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tab_ref = av_malloc(fft_size * sizeof(FFTComplex));
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tab2 = av_malloc(fft_size * sizeof(FFTSample));
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tab = av_malloc(fft_size * sizeof(FFTComplex));
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tab1 = av_malloc(fft_size * sizeof(FFTComplex));
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tab_ref = av_malloc(fft_size * sizeof(FFTComplex));
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tab2 = av_malloc(fft_size * sizeof(FFTSample));
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if (!(tab && tab1 && tab_ref && tab2))
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goto cleanup;
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@ -296,19 +300,19 @@ int main(int argc, char **argv)
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switch (transform) {
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#if CONFIG_MDCT
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case TRANSFORM_MDCT:
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av_log(NULL, AV_LOG_INFO,"Scale factor is set to %f\n", scale);
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av_log(NULL, AV_LOG_INFO, "Scale factor is set to %f\n", scale);
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if (do_inverse)
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av_log(NULL, AV_LOG_INFO,"IMDCT");
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av_log(NULL, AV_LOG_INFO, "IMDCT");
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else
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av_log(NULL, AV_LOG_INFO,"MDCT");
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av_log(NULL, AV_LOG_INFO, "MDCT");
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ff_mdct_init(&m, fft_nbits, do_inverse, scale);
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break;
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#endif /* CONFIG_MDCT */
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case TRANSFORM_FFT:
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if (do_inverse)
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av_log(NULL, AV_LOG_INFO,"IFFT");
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av_log(NULL, AV_LOG_INFO, "IFFT");
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else
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av_log(NULL, AV_LOG_INFO,"FFT");
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av_log(NULL, AV_LOG_INFO, "FFT");
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ff_fft_init(&s, fft_nbits, do_inverse);
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if (err = fft_ref_init(fft_nbits, do_inverse) < 0)
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goto cleanup;
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@ -317,9 +321,9 @@ int main(int argc, char **argv)
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#if CONFIG_RDFT
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case TRANSFORM_RDFT:
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if (do_inverse)
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av_log(NULL, AV_LOG_INFO,"IDFT_C2R");
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av_log(NULL, AV_LOG_INFO, "IDFT_C2R");
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else
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av_log(NULL, AV_LOG_INFO,"DFT_R2C");
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av_log(NULL, AV_LOG_INFO, "DFT_R2C");
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ff_rdft_init(&r, fft_nbits, do_inverse ? IDFT_C2R : DFT_R2C);
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if (err = fft_ref_init(fft_nbits, do_inverse) < 0)
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goto cleanup;
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@ -328,9 +332,9 @@ int main(int argc, char **argv)
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#if CONFIG_DCT
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case TRANSFORM_DCT:
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if (do_inverse)
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av_log(NULL, AV_LOG_INFO,"DCT_III");
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av_log(NULL, AV_LOG_INFO, "DCT_III");
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else
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av_log(NULL, AV_LOG_INFO,"DCT_II");
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av_log(NULL, AV_LOG_INFO, "DCT_II");
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ff_dct_init(&d, fft_nbits, do_inverse ? DCT_III : DCT_II);
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break;
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#endif /* CONFIG_DCT */
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@ -339,7 +343,7 @@ int main(int argc, char **argv)
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av_log(NULL, AV_LOG_ERROR, "Requested transform not supported\n");
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goto cleanup;
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}
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av_log(NULL, AV_LOG_INFO," %d test\n", fft_size);
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av_log(NULL, AV_LOG_INFO, " %d test\n", fft_size);
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/* generate random data */
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@ -349,21 +353,21 @@ int main(int argc, char **argv)
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}
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/* checking result */
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av_log(NULL, AV_LOG_INFO,"Checking...\n");
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av_log(NULL, AV_LOG_INFO, "Checking...\n");
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switch (transform) {
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#if CONFIG_MDCT
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case TRANSFORM_MDCT:
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if (do_inverse) {
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imdct_ref((FFTSample *)tab_ref, (FFTSample *)tab1, fft_nbits);
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m.imdct_calc(&m, tab2, (FFTSample *)tab1);
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err = check_diff((FFTSample *)tab_ref, tab2, fft_size, scale);
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imdct_ref((FFTSample *) tab_ref, (FFTSample *) tab1, fft_nbits);
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m.imdct_calc(&m, tab2, (FFTSample *) tab1);
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err = check_diff((FFTSample *) tab_ref, tab2, fft_size, scale);
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} else {
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mdct_ref((FFTSample *)tab_ref, (FFTSample *)tab1, fft_nbits);
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mdct_ref((FFTSample *) tab_ref, (FFTSample *) tab1, fft_nbits);
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m.mdct_calc(&m, tab2, (FFTSample *)tab1);
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m.mdct_calc(&m, tab2, (FFTSample *) tab1);
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err = check_diff((FFTSample *)tab_ref, tab2, fft_size / 2, scale);
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err = check_diff((FFTSample *) tab_ref, tab2, fft_size / 2, scale);
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}
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break;
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#endif /* CONFIG_MDCT */
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@ -373,7 +377,8 @@ int main(int argc, char **argv)
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s.fft_calc(&s, tab);
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fft_ref(tab_ref, tab1, fft_nbits);
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err = check_diff((FFTSample *)tab_ref, (FFTSample *)tab, fft_size * 2, 1.0);
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err = check_diff((FFTSample *) tab_ref, (FFTSample *) tab,
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fft_size * 2, 1.0);
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break;
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#if FFT_FLOAT
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#if CONFIG_RDFT
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@ -381,11 +386,11 @@ int main(int argc, char **argv)
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{
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int fft_size_2 = fft_size >> 1;
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if (do_inverse) {
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tab1[ 0].im = 0;
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tab1[0].im = 0;
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tab1[fft_size_2].im = 0;
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for (i = 1; i < fft_size_2; i++) {
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tab1[fft_size_2+i].re = tab1[fft_size_2-i].re;
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tab1[fft_size_2+i].im = -tab1[fft_size_2-i].im;
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tab1[fft_size_2 + i].re = tab1[fft_size_2 - i].re;
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tab1[fft_size_2 + i].im = -tab1[fft_size_2 - i].im;
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}
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memcpy(tab2, tab1, fft_size * sizeof(FFTSample));
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@ -397,7 +402,8 @@ int main(int argc, char **argv)
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tab[i].re = tab2[i];
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tab[i].im = 0;
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}
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err = check_diff((float *)tab_ref, (float *)tab, fft_size * 2, 0.5);
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err = check_diff((float *) tab_ref, (float *) tab,
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fft_size * 2, 0.5);
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} else {
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for (i = 0; i < fft_size; i++) {
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tab2[i] = tab1[i].re;
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@ -406,7 +412,7 @@ int main(int argc, char **argv)
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r.rdft_calc(&r, tab2);
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fft_ref(tab_ref, tab1, fft_nbits);
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tab_ref[0].im = tab_ref[fft_size_2].re;
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err = check_diff((float *)tab_ref, (float *)tab2, fft_size, 1.0);
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err = check_diff((float *) tab_ref, (float *) tab2, fft_size, 1.0);
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}
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break;
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}
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@ -415,12 +421,11 @@ int main(int argc, char **argv)
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case TRANSFORM_DCT:
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memcpy(tab, tab1, fft_size * sizeof(FFTComplex));
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d.dct_calc(&d, tab);
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if (do_inverse) {
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if (do_inverse)
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idct_ref(tab_ref, tab1, fft_nbits);
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} else {
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else
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dct_ref(tab_ref, tab1, fft_nbits);
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}
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err = check_diff((float *)tab_ref, (float *)tab, fft_size, 1.0);
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err = check_diff((float *) tab_ref, (float *) tab, fft_size, 1.0);
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break;
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#endif /* CONFIG_DCT */
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#endif /* FFT_FLOAT */
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@ -432,19 +437,18 @@ int main(int argc, char **argv)
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int64_t time_start, duration;
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int nb_its;
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av_log(NULL, AV_LOG_INFO,"Speed test...\n");
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av_log(NULL, AV_LOG_INFO, "Speed test...\n");
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/* we measure during about 1 seconds */
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nb_its = 1;
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for(;;) {
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for (;;) {
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time_start = av_gettime();
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for (it = 0; it < nb_its; it++) {
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switch (transform) {
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case TRANSFORM_MDCT:
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if (do_inverse) {
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m.imdct_calc(&m, (FFTSample *)tab, (FFTSample *)tab1);
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} else {
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m.mdct_calc(&m, (FFTSample *)tab, (FFTSample *)tab1);
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}
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if (do_inverse)
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m.imdct_calc(&m, (FFTSample *) tab, (FFTSample *) tab1);
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else
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m.mdct_calc(&m, (FFTSample *) tab, (FFTSample *) tab1);
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break;
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case TRANSFORM_FFT:
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memcpy(tab, tab1, fft_size * sizeof(FFTComplex));
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@ -467,9 +471,10 @@ int main(int argc, char **argv)
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break;
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nb_its *= 2;
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}
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av_log(NULL, AV_LOG_INFO,"time: %0.1f us/transform [total time=%0.2f s its=%d]\n",
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(double)duration / nb_its,
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(double)duration / 1000000.0,
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av_log(NULL, AV_LOG_INFO,
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"time: %0.1f us/transform [total time=%0.2f s its=%d]\n",
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(double) duration / nb_its,
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(double) duration / 1000000.0,
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nb_its);
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}
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