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glcolorconvert: Ensure we free the internal convert object

Browse source 
If we only ever make it to READY, transform_caps can create an
internal convert object that will never be freed by basetransform's
stop vmethod (PAUSED->READY).
This commit is contained in:
Matthew Waters 2019-03-06 23:29:56 +11:00
parent d5b18ae58f
commit 86aa568383
2 changed files with 37 additions and 7 deletions
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42
ext/gl/gstglcolorconvertelement.c
View file

@ -27,6 +27,7 @@
#include "gstglcolorconvertelement.h"
GST_DEBUG_CATEGORY_STATIC (gst_gl_color_convert_element_debug);
#define gst_gl_color_convert_element_parent_class parent_class
#define GST_CAT_DEFAULT gst_gl_color_convert_element_debug
G_DEFINE_TYPE_WITH_CODE (GstGLColorConvertElement, gst_gl_color_convert_element,
@ -53,6 +54,9 @@ static GstFlowReturn gst_gl_color_convert_element_transform (GstBaseTransform *
bt, GstBuffer * inbuf, GstBuffer * outbuf);
static GstCaps *gst_gl_color_convert_element_fixate_caps (GstBaseTransform *
bt, GstPadDirection direction, GstCaps * caps, GstCaps * othercaps);
static GstStateChangeReturn
gst_gl_color_convert_element_change_state (GstElement * element,
GstStateChange transition);
static GstStaticPadTemplate gst_gl_color_convert_element_src_pad_template =
GST_STATIC_PAD_TEMPLATE ("src",
@ -76,9 +80,7 @@ gst_gl_color_convert_element_stop (GstBaseTransform * bt)
convert->convert = NULL;
}
return
GST_BASE_TRANSFORM_CLASS (gst_gl_color_convert_element_parent_class)->stop
(bt);
return GST_BASE_TRANSFORM_CLASS (parent_class)->stop (bt);
}
static void
@ -100,6 +102,8 @@ gst_gl_color_convert_element_class_init (GstGLColorConvertElementClass * klass)
bt_class->passthrough_on_same_caps = TRUE;
element_class->change_state = gst_gl_color_convert_element_change_state;
gst_element_class_add_static_pad_template (element_class,
&gst_gl_color_convert_element_src_pad_template);
gst_element_class_add_static_pad_template (element_class,
@ -178,8 +182,7 @@ gst_gl_color_convert_element_decide_allocation (GstBaseTransform * trans,
GstGLColorConvertElement *convert = GST_GL_COLOR_CONVERT_ELEMENT (trans);
/* get gl context */
if (!GST_BASE_TRANSFORM_CLASS
(gst_gl_color_convert_element_parent_class)->decide_allocation (trans,
if (!GST_BASE_TRANSFORM_CLASS (parent_class)->decide_allocation (trans,
query))
return FALSE;
@ -237,3 +240,32 @@ gst_gl_color_convert_element_fixate_caps (GstBaseTransform *
return gst_gl_color_convert_fixate_caps (context, direction, caps, othercaps);
}
static GstStateChangeReturn
gst_gl_color_convert_element_change_state (GstElement * element,
GstStateChange transition)
{
GstGLColorConvertElement *convert = GST_GL_COLOR_CONVERT_ELEMENT (element);
GstStateChangeReturn ret = GST_STATE_CHANGE_SUCCESS;
GST_DEBUG_OBJECT (convert, "changing state: %s => %s",
gst_element_state_get_name (GST_STATE_TRANSITION_CURRENT (transition)),
gst_element_state_get_name (GST_STATE_TRANSITION_NEXT (transition)));
ret = GST_ELEMENT_CLASS (parent_class)->change_state (element, transition);
if (ret == GST_STATE_CHANGE_FAILURE)
return ret;
switch (transition) {
case GST_STATE_CHANGE_READY_TO_NULL:
if (convert->convert) {
gst_object_unref (convert->convert);
convert->convert = NULL;
}
break;
default:
break;
}
return ret;
}

2
gst-libs/gst/gl/gstglcolorconvert.c
View file

@ -523,8 +523,6 @@ gst_gl_color_convert_finalize (GObject * object)
convert->context = NULL;
}
GST_ERROR_OBJECT (convert, "finalize");
G_OBJECT_CLASS (gst_gl_color_convert_parent_class)->finalize (object);
}