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gst/spectrum/demo-audiotest.c: Use autoaudiosink instead of alsasink and use a sine wave.

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Original commit message from CVS:
* gst/spectrum/demo-audiotest.c: (main):
Use autoaudiosink instead of alsasink and use a sine wave.
* gst/spectrum/gstspectrum.c:
Fix the magnitude calculation.
This commit is contained in:
Sebastian Dröge 2007-11-06 12:23:35 +00:00
parent 6edf8c4326
commit f75f427ec1
3 changed files with 14 additions and 10 deletions
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2
common

@ -1 +1 @@
Subproject commit 34d7d649b972ea4915611a6ed88f01613bf32777
Subproject commit 423e2ea96b5f79281f4dd20d734bd968b3d95e89

18
gst/spectrum/gstspectrum.c
View file

@ -517,10 +517,12 @@ process_s##width (GstSpectrum *spectrum, const gint##width *samples) \
\
/* Calculate magnitude in db */ \
for (i = 0; i < spectrum->bands; i++) { \
gdouble val = (gdouble) freqdata[i].r * (gdouble) freqdata[i].r \
+ (gdouble) freqdata[i].i * (gdouble) freqdata[i].i; \
val = sqrt (val); \
val = 20.0 * log10 (val / max); \
gdouble val; \
val = (gdouble) freqdata[i].r * (gdouble) freqdata[i].r; \
val += (gdouble) freqdata[i].i * (gdouble) freqdata[i].i; \
val *= nfft; \
val /= max*max; \
val = 10.0 * log10 (val); \
if (val > spectrum->threshold) \
val -= spectrum->threshold; \
else \
@ -583,9 +585,11 @@ process_f##width (GstSpectrum *spectrum, const g##type *samples) \
\
/* Calculate magnitude in db */ \
for (i = 0; i < spectrum->bands; i++) { \
gdouble val = freqdata[i].r * freqdata[i].r + freqdata[i].i * freqdata[i].i; \
val = sqrt (val); \
val = 20.0 * log10 (val / nfft); \
gdouble val; \
val = freqdata[i].r * freqdata[i].r; \
val += freqdata[i].i * freqdata[i].i; \
val /= nfft; \
val = 10.0 * log10 (val); \
if (val > spectrum->threshold) \
val -= spectrum->threshold; \
else \

4
tests/examples/spectrum/demo-audiotest.c
View file

@ -28,7 +28,7 @@
#include <gst/gst.h>
#include <gtk/gtk.h>
#define DEFAULT_AUDIOSINK "alsasink"
#define DEFAULT_AUDIOSINK "autoaudiosink"
static GtkWidget *drawingarea = NULL;
static guint spect_height = 64;
@ -126,7 +126,7 @@ main (int argc, char *argv[])
bin = gst_pipeline_new ("bin");
src = gst_element_factory_make ("audiotestsrc", "src");
g_object_set (G_OBJECT (src), "wave", 1, NULL);
g_object_set (G_OBJECT (src), "wave", 0, NULL);
spectrum = gst_element_factory_make ("spectrum", "spectrum");
g_object_set (G_OBJECT (spectrum), "bands", spect_bands, "threshold", -80,