avfilter/avf_showspectrum: convert some doubles to floats

libavfilter/avf_showspectrum.c

@@ -392,29 +392,29 @@ static int run_channel_fft(AVFilterContext *ctx, void *arg, int jobnr, int nb_jo
     }
 
     if (s->stop) {
-        double theta, phi, psi, a, b, S, c;
+        float theta, phi, psi, a, b, S, c;
         FFTComplex *g = s->fft_data[ch];
         FFTComplex *h = s->fft_scratch[ch];
         int L = s->buf_size;
         int N = s->win_size;
         int M = s->win_size / 2;
 
-        phi = 2.0 * M_PI * (s->stop - s->start) / (double)inlink->sample_rate / (M - 1);
-        theta = 2.0 * M_PI * s->start / (double)inlink->sample_rate;
+        phi = 2.f * M_PI * (s->stop - s->start) / (float)inlink->sample_rate / (M - 1);
+        theta = 2.f * M_PI * s->start / (float)inlink->sample_rate;
 
         for (int n = 0; n < M; n++) {
-            h[n].re = cos(n * n / 2.0 * phi);
-            h[n].im = sin(n * n / 2.0 * phi);
+            h[n].re = cosf(n * n / 2.f * phi);
+            h[n].im = sinf(n * n / 2.f * phi);
         }
 
         for (int n = M; n < L; n++) {
-            h[n].re = 0.0;
-            h[n].im = 0.0;
+            h[n].re = 0.f;
+            h[n].im = 0.f;
         }
 
         for (int n = L - N; n < L; n++) {
-            h[n].re = cos((L - n) * (L - n) / 2.0 * phi);
-            h[n].im = sin((L - n) * (L - n) / 2.0 * phi);
+            h[n].re = cosf((L - n) * (L - n) / 2.f * phi);
+            h[n].im = sinf((L - n) * (L - n) / 2.f * phi);
         }
 
         for (int n = 0; n < N; n++) {
@@ -423,14 +423,14 @@ static int run_channel_fft(AVFilterContext *ctx, void *arg, int jobnr, int nb_jo
         }
 
         for (int n = N; n < L; n++) {
-            g[n].re = 0.;
-            g[n].im = 0.;
+            g[n].re = 0.f;
+            g[n].im = 0.f;
         }
 
         for (int n = 0; n < N; n++) {
-            psi = n * theta + n * n / 2.0 * phi;
-            c =  cos(psi);
-            S = -sin(psi);
+            psi = n * theta + n * n / 2.f * phi;
+            c =  cosf(psi);
+            S = -sinf(psi);
             a = c * g[n].re - S * g[n].im;
             b = S * g[n].re + c * g[n].im;
             g[n].re = a;
@@ -457,9 +457,9 @@ static int run_channel_fft(AVFilterContext *ctx, void *arg, int jobnr, int nb_jo
         av_fft_calc(s->ifft[ch], g);
 
         for (int k = 0; k < M; k++) {
-            psi = k * k / 2.0 * phi;
-            c =  cos(psi);
-            S = -sin(psi);
+            psi = k * k / 2.f * phi;
+            c =  cosf(psi);
+            S = -sinf(psi);
             a = c * g[k].re - S * g[k].im;
             b = S * g[k].re + c * g[k].im;
             s->fft_data[ch][k].re = a;
@@ -555,15 +555,15 @@ static void color_range(ShowSpectrumContext *s, int ch,
 
     if (s->color_mode == CHANNEL) {
         if (s->nb_display_channels > 1) {
-            *uf *= 0.5 * sin((2 * M_PI * ch) / s->nb_display_channels + M_PI * s->rotation);
-            *vf *= 0.5 * cos((2 * M_PI * ch) / s->nb_display_channels + M_PI * s->rotation);
+            *uf *= 0.5f * sinf((2 * M_PI * ch) / s->nb_display_channels + M_PI * s->rotation);
+            *vf *= 0.5f * cosf((2 * M_PI * ch) / s->nb_display_channels + M_PI * s->rotation);
         } else {
-            *uf *= 0.5 * sin(M_PI * s->rotation);
-            *vf *= 0.5 * cos(M_PI * s->rotation + M_PI_2);
+            *uf *= 0.5f * sinf(M_PI * s->rotation);
+            *vf *= 0.5f * cosf(M_PI * s->rotation + M_PI_2);
         }
     } else {
-        *uf += *uf * sin(M_PI * s->rotation);
-        *vf += *vf * cos(M_PI * s->rotation + M_PI_2);
+        *uf += *uf * sinf(M_PI * s->rotation);
+        *vf += *vf * cosf(M_PI * s->rotation + M_PI_2);
     }
 
     *uf *= s->saturation;
@@ -854,7 +854,7 @@ static int draw_legend(AVFilterContext *ctx, int samples)
         }
 
         for (y = 0; ch == 0 && y < h; y += h / 10) {
-            float value = 120.0 * log10(1. - y / (float)h);
+            float value = 120.f * log10f(1.f - y / (float)h);
             char *text;
 
             if (value < -120)
@@ -896,19 +896,19 @@ static float get_value(AVFilterContext *ctx, int ch, int y)
         a = av_clipf(a, 0, 1);
         break;
     case SQRT:
-        a = av_clipf(sqrt(a), 0, 1);
+        a = av_clipf(sqrtf(a), 0, 1);
         break;
     case CBRT:
-        a = av_clipf(cbrt(a), 0, 1);
+        a = av_clipf(cbrtf(a), 0, 1);
         break;
     case FOURTHRT:
-        a = av_clipf(sqrt(sqrt(a)), 0, 1);
+        a = av_clipf(sqrtf(sqrtf(a)), 0, 1);
         break;
     case FIFTHRT:
-        a = av_clipf(pow(a, 0.20), 0, 1);
+        a = av_clipf(powf(a, 0.20), 0, 1);
         break;
     case LOG:
-        a = 1 + log10(av_clipd(a, 1e-6, 1)) / 6; // zero = -120dBFS
+        a = 1.f + log10f(av_clipf(a, 1e-6, 1)) / 6.f; // zero = -120dBFS
         break;
     default:
         av_assert0(0);
@@ -1128,7 +1128,7 @@ static int config_output(AVFilterLink *outlink)
         generate_window_func(s->window_func_lut, s->win_size, s->win_func, &overlap);
         if (s->overlap == 1)
             s->overlap = overlap;
-        s->hop_size = (1. - s->overlap) * s->win_size;
+        s->hop_size = (1.f - s->overlap) * s->win_size;
         if (s->hop_size < 1) {
             av_log(ctx, AV_LOG_ERROR, "overlap %f too big\n", s->overlap);
             return AVERROR(EINVAL);
@@ -1137,7 +1137,7 @@ static int config_output(AVFilterLink *outlink)
         for (s->win_scale = 0, i = 0; i < s->win_size; i++) {
             s->win_scale += s->window_func_lut[i] * s->window_func_lut[i];
         }
-        s->win_scale = 1. / sqrt(s->win_scale);
+        s->win_scale = 1.f / sqrtf(s->win_scale);
 
         /* prepare the initial picref buffer (black frame) */
         av_frame_free(&s->outpicref);
@@ -1198,8 +1198,8 @@ static int config_output(AVFilterLink *outlink)
 
 #define RE(y, ch) s->fft_data[ch][y].re
 #define IM(y, ch) s->fft_data[ch][y].im
-#define MAGNITUDE(y, ch) hypot(RE(y, ch), IM(y, ch))
-#define PHASE(y, ch) atan2(IM(y, ch), RE(y, ch))
+#define MAGNITUDE(y, ch) hypotf(RE(y, ch), IM(y, ch))
+#define PHASE(y, ch) atan2f(IM(y, ch), RE(y, ch))
 
 static int calc_channel_magnitudes(AVFilterContext *ctx, void *arg, int jobnr, int nb_jobs)
 {
@@ -1639,7 +1639,7 @@ static int showspectrumpic_request_frame(AVFilterLink *outlink)
             if (consumed >= spb) {
                 int h = s->orientation == VERTICAL ? s->h : s->w;
 
-                scale_magnitudes(s, 1. / (consumed / spf));
+                scale_magnitudes(s, 1.f / (consumed / spf));
                 plot_spectrum_column(inlink, fin);
                 consumed = 0;
                 x++;