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level: fix infinite loop for very low interval values

Browse source 
https://bugzilla.gnome.org/show_bug.cgi?id=745515
This commit is contained in:
Tim-Philipp Müller 2015-04-24 00:30:35 +01:00
parent 12c77968bf
commit 03d3d36053
1 changed files with 29 additions and 7 deletions
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36
gst/level/gstlevel.c
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@ -168,7 +168,7 @@ static GstFlowReturn gst_level_transform_ip (GstBaseTransform * trans,
static void gst_level_post_message (GstLevel * filter);
static gboolean gst_level_sink_event (GstBaseTransform * trans,
GstEvent * event);
static void gst_level_recalc_interval_frames (GstLevel * level);
static void
gst_level_class_init (GstLevelClass * klass)
@ -299,10 +299,10 @@ gst_level_set_property (GObject * object, guint prop_id,
break;
case PROP_INTERVAL:
filter->interval = g_value_get_uint64 (value);
/* Not exactly thread-safe, but property does not advertise that it
* can be changed at runtime anyway */
if (GST_AUDIO_INFO_RATE (&filter->info)) {
filter->interval_frames =
GST_CLOCK_TIME_TO_FRAMES (filter->interval,
GST_AUDIO_INFO_RATE (&filter->info));
gst_level_recalc_interval_frames (filter);
}
break;
case PROP_PEAK_TTL:
@ -431,13 +431,36 @@ gst_level_calculate_gdouble (gpointer data, guint num, guint channels,
}
*/
static void
gst_level_recalc_interval_frames (GstLevel * level)
{
GstClockTime interval = level->interval;
guint sample_rate = GST_AUDIO_INFO_RATE (&level->info);
guint interval_frames;
interval_frames = GST_CLOCK_TIME_TO_FRAMES (interval, sample_rate);
if (interval_frames == 0) {
GST_WARNING_OBJECT (level, "interval %" GST_TIME_FORMAT " is too small, "
"should be at least %" GST_TIME_FORMAT " for sample rate %u",
GST_TIME_ARGS (interval),
GST_TIME_ARGS (GST_FRAMES_TO_CLOCK_TIME (1, sample_rate)), sample_rate);
interval_frames = 1;
}
level->interval_frames = interval_frames;
GST_INFO_OBJECT (level, "interval_frames now %u for interval "
"%" GST_TIME_FORMAT " and sample rate %u", interval_frames,
GST_TIME_ARGS (interval), sample_rate);
}
static gboolean
gst_level_set_caps (GstBaseTransform * trans, GstCaps * in, GstCaps * out)
{
GstLevel *filter = GST_LEVEL (trans);
GstAudioInfo info;
gint i, channels, rate;
gint i, channels;
if (!gst_audio_info_from_caps (&info, in))
return FALSE;
@ -466,7 +489,6 @@ gst_level_set_caps (GstBaseTransform * trans, GstCaps * in, GstCaps * out)
filter->info = info;
channels = GST_AUDIO_INFO_CHANNELS (&info);
rate = GST_AUDIO_INFO_RATE (&info);
/* allocate channel variable arrays */
g_free (filter->CS);
@ -489,7 +511,7 @@ gst_level_set_caps (GstBaseTransform * trans, GstCaps * in, GstCaps * out)
filter->decay_peak_age[i] = G_GUINT64_CONSTANT (0);
}
filter->interval_frames = GST_CLOCK_TIME_TO_FRAMES (filter->interval, rate);
gst_level_recalc_interval_frames (filter);
return TRUE;
}