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Fix segfault in #125471 by denying a state change to PLAYING when not inited. This is arguably not the right fix.

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Original commit message from CVS:
Fix segfault in #125471 by denying a state change to PLAYING when not
inited.  This is arguably not the right fix.
This commit is contained in:
David Schleef 2003-11-19 03:46:21 +00:00
parent 5c244e8374
commit 5d592f709f
2 changed files with 61 additions and 42 deletions
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102
gst/level/gstlevel.c
View file

@ -99,6 +99,7 @@ static void gst_level_class_init (GstLevelClass *klass);
static void gst_level_base_init (GstLevelClass *klass); static void gst_level_base_init (GstLevelClass *klass);
static void gst_level_init (GstLevel *filter); static void gst_level_init (GstLevel *filter);
static GstElementStateReturn gst_level_change_state (GstElement *element);
static void gst_level_set_property (GObject *object, guint prop_id, const GValue *value, GParamSpec *pspec); static void gst_level_set_property (GObject *object, guint prop_id, const GValue *value, GParamSpec *pspec);
static void gst_level_get_property (GObject *object, guint prop_id, GValue *value, GParamSpec *pspec); static void gst_level_get_property (GObject *object, guint prop_id, GValue *value, GParamSpec *pspec);
@ -129,7 +130,7 @@ gst_level_get_type (void)
} }
static GstPadLinkReturn static GstPadLinkReturn
gst_level_connect (GstPad *pad, GstCaps *caps) gst_level_link (GstPad *pad, GstCaps *caps)
{ {
GstLevel *filter; GstLevel *filter;
GstPad *otherpad; GstPad *otherpad;
@ -141,47 +142,49 @@ gst_level_connect (GstPad *pad, GstCaps *caps)
g_return_val_if_fail (GST_IS_LEVEL (filter), GST_PAD_LINK_REFUSED); g_return_val_if_fail (GST_IS_LEVEL (filter), GST_PAD_LINK_REFUSED);
otherpad = (pad == filter->srcpad ? filter->sinkpad : filter->srcpad); otherpad = (pad == filter->srcpad ? filter->sinkpad : filter->srcpad);
if (GST_CAPS_IS_FIXED (caps)) if (!GST_CAPS_IS_FIXED (caps)) {
{ return GST_PAD_LINK_DELAYED;
/* yep, got them */ }
res = gst_pad_try_set_caps (otherpad, caps);
/* if ok, set filter */
if (res == GST_PAD_LINK_OK)
{
filter->num_samples = 0;
/* FIXME: error handling */
if (! gst_caps_get_int (caps, "rate", &(filter->rate)))
g_warning ("WARNING: level: Could not get rate from caps\n");
if (!gst_caps_get_int (caps, "width", &(filter->width)))
g_warning ("WARNING: level: Could not get width from caps\n");
if (!gst_caps_get_int (caps, "channels", &(filter->channels)))
g_warning ("WARNING: level: Could not get number of channels from caps\n");
/* allocate channel variable arrays */ res = gst_pad_try_set_caps (otherpad, caps);
if (filter->CS) g_free (filter->CS); /* if ok, set filter */
if (filter->peak) g_free (filter->peak); if (res != GST_PAD_LINK_OK && res != GST_PAD_LINK_DONE) {
if (filter->last_peak) g_free (filter->last_peak);
if (filter->decay_peak) g_free (filter->decay_peak);
if (filter->decay_peak_age) g_free (filter->decay_peak_age);
if (filter->MS) g_free (filter->MS);
if (filter->RMS_dB) g_free (filter->RMS_dB);
filter->CS = g_new (double, filter->channels);
filter->peak = g_new (double, filter->channels);
filter->last_peak = g_new (double, filter->channels);
filter->decay_peak = g_new (double, filter->channels);
filter->decay_peak_age = g_new (double, filter->channels);
filter->MS = g_new (double, filter->channels);
filter->RMS_dB = g_new (double, filter->channels);
for (i = 0; i < filter->channels; ++i)
{
filter->CS[i] = filter->peak[i] = filter->last_peak[i] =
filter->decay_peak[i] = filter->decay_peak_age[i] =
filter->MS[i] = filter->RMS_dB[i] = 0.0;
}
}
return res; return res;
} }
return GST_PAD_LINK_DELAYED;
filter->num_samples = 0;
if (!gst_caps_get_int (caps, "rate", &(filter->rate)))
return GST_PAD_LINK_REFUSED;
if (!gst_caps_get_int (caps, "width", &(filter->width)))
return GST_PAD_LINK_REFUSED;
if (!gst_caps_get_int (caps, "channels", &(filter->channels)))
return GST_PAD_LINK_REFUSED;
/* allocate channel variable arrays */
if (filter->CS) g_free (filter->CS);
if (filter->peak) g_free (filter->peak);
if (filter->last_peak) g_free (filter->last_peak);
if (filter->decay_peak) g_free (filter->decay_peak);
if (filter->decay_peak_age) g_free (filter->decay_peak_age);
if (filter->MS) g_free (filter->MS);
if (filter->RMS_dB) g_free (filter->RMS_dB);
filter->CS = g_new (double, filter->channels);
filter->peak = g_new (double, filter->channels);
filter->last_peak = g_new (double, filter->channels);
filter->decay_peak = g_new (double, filter->channels);
filter->decay_peak_age = g_new (double, filter->channels);
filter->MS = g_new (double, filter->channels);
filter->RMS_dB = g_new (double, filter->channels);
for (i = 0; i < filter->channels; ++i) {
filter->CS[i] = filter->peak[i] = filter->last_peak[i] =
filter->decay_peak[i] = filter->decay_peak_age[i] =
filter->MS[i] = filter->RMS_dB[i] = 0.0;
}
filter->inited = TRUE;
return GST_PAD_LINK_OK;
} }
static void inline static void inline
@ -209,7 +212,6 @@ gst_level_chain (GstPad *pad, GstData *_data)
g_return_if_fail (GST_IS_PAD (pad)); g_return_if_fail (GST_IS_PAD (pad));
g_return_if_fail (buf != NULL); g_return_if_fail (buf != NULL);
filter = GST_LEVEL (GST_OBJECT_PARENT (pad)); filter = GST_LEVEL (GST_OBJECT_PARENT (pad));
g_return_if_fail (filter != NULL); g_return_if_fail (filter != NULL);
g_return_if_fail (GST_IS_LEVEL (filter)); g_return_if_fail (GST_IS_LEVEL (filter));
@ -313,6 +315,20 @@ gst_level_chain (GstPad *pad, GstData *_data)
} }
} }
static GstElementStateReturn gst_level_change_state (GstElement *element)
{
GstLevel *filter = GST_LEVEL (element);
switch(GST_STATE_TRANSITION(element)){
case GST_STATE_PAUSED_TO_PLAYING:
if (!filter->inited) return GST_STATE_FAILURE;
break;
default:
break;
}
return GST_ELEMENT_CLASS(parent_class)->change_state(element);
}
static void static void
gst_level_set_property (GObject *object, guint prop_id, gst_level_set_property (GObject *object, guint prop_id,
@ -381,6 +397,8 @@ gst_level_base_init (GstLevelClass *klass)
gst_element_class_add_pad_template (element_class, gst_element_class_add_pad_template (element_class,
GST_PAD_TEMPLATE_GET (src_template_factory)); GST_PAD_TEMPLATE_GET (src_template_factory));
gst_element_class_set_details (element_class, &level_details); gst_element_class_set_details (element_class, &level_details);
element_class->change_state = gst_level_change_state;
} }
static void static void
@ -426,9 +444,9 @@ static void
gst_level_init (GstLevel *filter) gst_level_init (GstLevel *filter)
{ {
filter->sinkpad = gst_pad_new_from_template (GST_PAD_TEMPLATE_GET (sink_template_factory), "sink"); filter->sinkpad = gst_pad_new_from_template (GST_PAD_TEMPLATE_GET (sink_template_factory), "sink");
gst_pad_set_link_function (filter->sinkpad, gst_level_connect); gst_pad_set_link_function (filter->sinkpad, gst_level_link);
filter->srcpad = gst_pad_new_from_template (GST_PAD_TEMPLATE_GET (src_template_factory), "src"); filter->srcpad = gst_pad_new_from_template (GST_PAD_TEMPLATE_GET (src_template_factory), "src");
gst_pad_set_link_function (filter->srcpad, gst_level_connect); gst_pad_set_link_function (filter->srcpad, gst_level_link);
gst_element_add_pad (GST_ELEMENT (filter), filter->sinkpad); gst_element_add_pad (GST_ELEMENT (filter), filter->sinkpad);
gst_pad_set_chain_function (filter->sinkpad, gst_level_chain); gst_pad_set_chain_function (filter->sinkpad, gst_level_chain);

1
gst/level/gstlevel.h
View file

@ -54,6 +54,7 @@ struct _GstLevel {
GstPad *sinkpad, *srcpad; GstPad *sinkpad, *srcpad;
gboolean signal; /* whether or not to emit signals */ gboolean signal; /* whether or not to emit signals */
gboolean inited; /* whether or not the element is initialized */
gdouble interval; /* how many seconds between emits */ gdouble interval; /* how many seconds between emits */
gint rate; /* caps variables */ gint rate; /* caps variables */