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Code Issues Releases Activity

avfilter/avf_showcqt: remove CoeffsType

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seems not useful

Signed-off-by: Muhammad Faiz <mfcc64@gmail.com>
This commit is contained in:
Muhammad Faiz 2016-03-01 09:18:06 +07:00
parent 238ddd6482
commit 7dd60a0b54
2 changed files with 6 additions and 62 deletions
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62
libavfilter/avf_showcqt.c
View File

@ -103,7 +103,7 @@ static void common_uninit(ShowCQTContext *s)
av_fft_end(s->fft_ctx);
s->fft_ctx = NULL;
if (s->coeffs)
for (k = 0; k < s->cqt_len * 2; k++)
for (k = 0; k < s->cqt_len; k++)
av_freep(&s->coeffs[k].val);
av_freep(&s->coeffs);
av_freep(&s->fft_data);
@ -249,61 +249,25 @@ static void cqt_calc(FFTComplex *dst, const FFTComplex *src, const Coeffs *coeff
}
}
#if 0
static void cqt_calc_interleave(FFTComplex *dst, const FFTComplex *src, const Coeffs *coeffs,
int len, int fft_len)
{
int k, x, i, m;
for (k = 0; k < len; k++) {
FFTComplex l, r, a = {0,0}, b = {0,0};
m = 2 * k;
for (x = 0; x < coeffs[m].len; x++) {
FFTSample u = coeffs[m].val[x];
i = coeffs[m].start + x;
a.re += u * src[i].re;
a.im += u * src[i].im;
}
m++;
for (x = 0; x < coeffs[m].len; x++) {
FFTSample u = coeffs[m].val[x];
i = coeffs[m].start + x;
b.re += u * src[i].re;
b.im += u * src[i].im;
}
/* separate left and right, (and multiply by 2.0) */
l.re = a.re + b.re;
l.im = a.im - b.im;
r.re = b.im + a.im;
r.im = b.re - a.re;
dst[k].re = l.re * l.re + l.im * l.im;
dst[k].im = r.re * r.re + r.im * r.im;
}
}
#endif
static int init_cqt(ShowCQTContext *s)
{
const char *var_names[] = { "timeclamp", "tc", "frequency", "freq", "f", NULL };
AVExpr *expr = NULL;
int rate = s->ctx->inputs[0]->sample_rate;
int nb_cqt_coeffs = 0, nb_cqt_coeffs_r = 0;
int nb_cqt_coeffs = 0;
int k, x, ret;
if ((ret = av_expr_parse(&expr, s->tlength, var_names, NULL, NULL, NULL, NULL, 0, s->ctx)) < 0)
goto error;
ret = AVERROR(ENOMEM);
if (!(s->coeffs = av_calloc(s->cqt_len * 2, sizeof(*s->coeffs))))
if (!(s->coeffs = av_calloc(s->cqt_len, sizeof(*s->coeffs))))
goto error;
for (k = 0; k < s->cqt_len; k++) {
double vars[] = { s->timeclamp, s->timeclamp, s->freq[k], s->freq[k], s->freq[k] };
double flen, center, tlength;
int start, end, m = (s->cqt_coeffs_type == COEFFS_TYPE_INTERLEAVE) ? (2 * k) : k;
int start, end, m = k;
if (s->freq[k] > 0.5 * rate)
continue;
@ -321,14 +285,6 @@ static int init_cqt(ShowCQTContext *s)
if (!(s->coeffs[m].val = av_calloc(s->coeffs[m].len, sizeof(*s->coeffs[m].val))))
goto error;
if (s->cqt_coeffs_type == COEFFS_TYPE_INTERLEAVE) {
s->coeffs[m+1].start = (s->fft_len - end) & ~(s->cqt_align - 1);
s->coeffs[m+1].len = ((s->fft_len - start) | (s->cqt_align - 1)) + 1 - s->coeffs[m+1].start;
nb_cqt_coeffs_r += s->coeffs[m+1].len;
if (!(s->coeffs[m+1].val = av_calloc(s->coeffs[m+1].len, sizeof(*s->coeffs[m+1].val))))
goto error;
}
for (x = start; x <= end; x++) {
int sign = (x & 1) ? (-1) : 1;
double y = 2.0 * M_PI * (x - center) * (1.0 / flen);
@ -336,22 +292,17 @@ static int init_cqt(ShowCQTContext *s)
double w = 0.355768 + 0.487396 * cos(y) + 0.144232 * cos(2*y) + 0.012604 * cos(3*y);
w *= sign * (1.0 / s->fft_len);
s->coeffs[m].val[x - s->coeffs[m].start] = w;
if (s->cqt_coeffs_type == COEFFS_TYPE_INTERLEAVE)
s->coeffs[m+1].val[(s->fft_len - x) - s->coeffs[m+1].start] = w;
}
}
av_expr_free(expr);
if (s->cqt_coeffs_type == COEFFS_TYPE_DEFAULT)
av_log(s->ctx, AV_LOG_INFO, "nb_cqt_coeffs = %d.\n", nb_cqt_coeffs);
else
av_log(s->ctx, AV_LOG_INFO, "nb_cqt_coeffs = {%d,%d}.\n", nb_cqt_coeffs, nb_cqt_coeffs_r);
av_log(s->ctx, AV_LOG_INFO, "nb_cqt_coeffs = %d.\n", nb_cqt_coeffs);
return 0;
error:
av_expr_free(expr);
if (s->coeffs)
for (k = 0; k < s->cqt_len * 2; k++)
for (k = 0; k < s->cqt_len; k++)
av_freep(&s->coeffs[k].val);
av_freep(&s->coeffs);
return ret;
@ -1172,7 +1123,6 @@ static int config_output(AVFilterLink *outlink)
return AVERROR(ENOMEM);
s->cqt_align = 1;
s->cqt_coeffs_type = COEFFS_TYPE_DEFAULT;
s->cqt_calc = cqt_calc;
s->draw_sono = draw_sono;
if (s->format == AV_PIX_FMT_RGB24) {

6
libavfilter/avf_showcqt.h
View File

@ -30,11 +30,6 @@ typedef struct {
int start, len;
} Coeffs;
enum CoeffsType {
COEFFS_TYPE_DEFAULT,
COEFFS_TYPE_INTERLEAVE
};
typedef struct {
float r, g, b;
} RGBFloat;
@ -71,7 +66,6 @@ typedef struct {
int fft_len;
int cqt_len;
int cqt_align;
enum CoeffsType cqt_coeffs_type;
ColorFloat *c_buf;
float *h_buf;
float *rcp_h_buf;