static void
gst_audio_dynamic_set_property (GObject * object, guint prop_id,
const GValue * value, GParamSpec * pspec)
{
GstAudioDynamic *filter = GST_AUDIO_DYNAMIC (object);
switch (prop_id) {
case PROP_CHARACTERISTICS:
filter->characteristics = g_value_get_enum (value);
gst_audio_dynamic_set_process_function (filter,
GST_AUDIO_FILTER_INFO (filter));
break;
case PROP_MODE:
filter->mode = g_value_get_enum (value);
gst_audio_dynamic_set_process_function (filter,
GST_AUDIO_FILTER_INFO (filter));
break;
case PROP_THRESHOLD:
filter->threshold = g_value_get_float (value);
break;
case PROP_RATIO:
filter->ratio = g_value_get_float (value);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
}
}
static GstFlowReturn
gst_audio_filter_template_filter_inplace (GstBaseTransform * base_transform,
GstBuffer * buf)
{
GstAudioFilterTemplate *filter = GST_AUDIO_FILTER_TEMPLATE (base_transform);
GstFlowReturn flow = GST_FLOW_OK;
GstMapInfo map;
GST_LOG_OBJECT (filter, "transform buffer in place");
/* FIXME: do something interesting here. Doing nothing means the input
* buffer is simply pushed out as is without any modification */
if (gst_buffer_map (buf, &map, GST_MAP_READWRITE)) {
#if 0
switch (GST_AUDIO_FILTER_FORMAT (filter)) {
case GST_AUDIO_FORMAT_S16LE:
case GST_AUDIO_FORMAT_S16BE: {
gint16 *samples = map.data;
guint n_samples = map.size / sizeof (gint16);
guint i;
for (i = 0; i < n; ++n) {
samples[i] = samples[i];
}
break;
}
default:
g_warning ("Unexpected audio format %s!",
GST_AUDIO_INFO_NAME (GST_AUDIO_FILTER_INFO(filter)));
flow = GST_FLOW_ERROR;
break;
}
#endif
gst_buffer_unmap (buf, &map);
}
return flow;
}
void
gst_iir_equalizer_compute_frequencies (GstIirEqualizer * equ, guint new_count)
{
guint old_count, i;
gdouble freq0, freq1, step;
gchar name[20];
if (equ->freq_band_count == new_count)
return;
BANDS_LOCK (equ);
if (G_UNLIKELY (equ->freq_band_count == new_count)) {
BANDS_UNLOCK (equ);
return;
}
old_count = equ->freq_band_count;
equ->freq_band_count = new_count;
GST_DEBUG ("bands %u -> %u", old_count, new_count);
if (old_count < new_count) {
/* add new bands */
equ->bands = g_realloc (equ->bands, sizeof (GstObject *) * new_count);
for (i = old_count; i < new_count; i++) {
/* otherwise they get names like 'iirequalizerband5' */
sprintf (name, "band%u", i);
equ->bands[i] = g_object_new (GST_TYPE_IIR_EQUALIZER_BAND,
"name", name, NULL);
GST_DEBUG ("adding band[%d]=%p", i, equ->bands[i]);
gst_object_set_parent (GST_OBJECT (equ->bands[i]), GST_OBJECT (equ));
gst_child_proxy_child_added (GST_CHILD_PROXY (equ),
G_OBJECT (equ->bands[i]), name);
}
} else {
/* free unused bands */
for (i = new_count; i < old_count; i++) {
GST_DEBUG ("removing band[%d]=%p", i, equ->bands[i]);
gst_child_proxy_child_removed (GST_CHILD_PROXY (equ),
G_OBJECT (equ->bands[i]), GST_OBJECT_NAME (equ->bands[i]));
gst_object_unparent (GST_OBJECT (equ->bands[i]));
equ->bands[i] = NULL;
}
}
alloc_history (equ, GST_AUDIO_FILTER_INFO (equ));
/* set center frequencies and name band objects
* FIXME: arg! we can't change the name of parented objects :(
* application should read band->freq to get the name
*/
step = pow (HIGHEST_FREQ / LOWEST_FREQ, 1.0 / new_count);
freq0 = LOWEST_FREQ;
for (i = 0; i < new_count; i++) {
freq1 = freq0 * step;
if (i == 0)
equ->bands[i]->type = BAND_TYPE_LOW_SHELF;
else if (i == new_count - 1)
equ->bands[i]->type = BAND_TYPE_HIGH_SHELF;
else
equ->bands[i]->type = BAND_TYPE_PEAK;
equ->bands[i]->freq = freq0 + ((freq1 - freq0) / 2.0);
equ->bands[i]->width = freq1 - freq0;
GST_DEBUG ("band[%2d] = '%lf'", i, equ->bands[i]->freq);
g_object_notify (G_OBJECT (equ->bands[i]), "bandwidth");
g_object_notify (G_OBJECT (equ->bands[i]), "freq");
g_object_notify (G_OBJECT (equ->bands[i]), "type");
/*
if(equ->bands[i]->freq<10000.0)
sprintf (name,"%dHz",(gint)equ->bands[i]->freq);
else
sprintf (name,"%dkHz",(gint)(equ->bands[i]->freq/1000.0));
gst_object_set_name( GST_OBJECT (equ->bands[i]), name);
GST_DEBUG ("band[%2d] = '%s'",i,name);
*/
freq0 = freq1;
}
equ->need_new_coefficients = TRUE;
BANDS_UNLOCK (equ);
}
