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jpegparse: provide a getcaps function for src pad and improve setcaps

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Previously jpegparse was failing in decodebin as the caps we were setting where not
setting all caps fields. We need the own getcaps function to report what we actualy
accept.
This commit is contained in:
Stefan Kost 2010-02-01 17:46:29 +02:00
parent ab7e974dab
commit f3122f2b30
1 changed files with 19 additions and 1 deletions
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20
gst/jpegformat/gstjpegparse.c
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@ -113,6 +113,7 @@ static void gst_jpeg_parse_dispose (GObject * object);
static GstFlowReturn gst_jpeg_parse_chain (GstPad * pad, GstBuffer * buffer);
static gboolean gst_jpeg_parse_sink_setcaps (GstPad * pad, GstCaps * caps);
static gboolean gst_jpeg_parse_sink_event (GstPad * pad, GstEvent * event);
static GstCaps *gst_jpeg_parse_src_getcaps (GstPad * pad);
static GstStateChangeReturn gst_jpeg_parse_change_state (GstElement * element,
GstStateChange transition);
@ -176,6 +177,8 @@ gst_jpeg_parse_init (GstJpegParse * parse, GstJpegParseClass * g_class)
parse->priv->srcpad =
gst_pad_new_from_static_template (&gst_jpeg_parse_src_pad_template,
"src");
gst_pad_set_getcaps_function (parse->priv->srcpad,
GST_DEBUG_FUNCPTR (gst_jpeg_parse_src_getcaps));
gst_element_add_pad (GST_ELEMENT (parse), parse->priv->srcpad);
parse->priv->next_ts = GST_CLOCK_TIME_NONE;
@ -219,6 +222,21 @@ gst_jpeg_parse_sink_setcaps (GstPad * pad, GstCaps * caps)
return TRUE;
}
static GstCaps *
gst_jpeg_parse_src_getcaps (GstPad * pad)
{
GstCaps *result;
if ((result = GST_PAD_CAPS (pad))) {
result = gst_caps_ref (result);
GST_DEBUG_OBJECT (pad, "using pad caps %" GST_PTR_FORMAT, result);
} else {
result = gst_caps_ref (GST_PAD_TEMPLATE_CAPS (GST_PAD_PAD_TEMPLATE (pad)));
GST_DEBUG_OBJECT (pad, "using pad template caps %" GST_PTR_FORMAT, result);
}
return result;
}
/*
* gst_jpeg_parse_skip_to_jpeg_header:
* @parse: the parser
@ -604,6 +622,7 @@ gst_jpeg_parse_set_new_caps (GstJpegParse * parse, gboolean header_ok)
} else {
/* unknown duration */
parse->priv->duration = GST_CLOCK_TIME_NONE;
gst_caps_set_simple (caps, "framerate", GST_TYPE_FRACTION, 1, 1, NULL);
}
GST_DEBUG_OBJECT (parse,
@ -611,7 +630,6 @@ gst_jpeg_parse_set_new_caps (GstJpegParse * parse, gboolean header_ok)
GST_DEBUG_PAD_NAME (parse->priv->srcpad), caps);
res = gst_pad_set_caps (parse->priv->srcpad, caps);
gst_caps_unref (caps);
gst_pad_use_fixed_caps (parse->priv->srcpad);
return res;