mirror of
https://gitlab.freedesktop.org/gstreamer/gstreamer.git
synced 2024-11-23 10:11:08 +00:00
59 lines
1.4 KiB
C
59 lines
1.4 KiB
C
#include <gst/gst.h>
|
|
|
|
/* this is an example of the src pad dictating the caps
|
|
* the sink pad only accepts audio/raw */
|
|
|
|
static GstCaps*
|
|
negotiate (GstPad *pad, GstCaps *caps, gint count)
|
|
{
|
|
g_print ("negotiation entered\n");
|
|
|
|
if (!strcmp (gst_caps_get_mime (caps), "audio/raw"))
|
|
return caps;
|
|
|
|
return NULL;
|
|
}
|
|
|
|
int
|
|
main(int argc,char *argv[])
|
|
{
|
|
GstPad *srcpad, *sinkpad;
|
|
GstCaps *new;
|
|
|
|
gst_init(&argc,&argv);
|
|
|
|
srcpad = gst_pad_new ("src", GST_PAD_SRC);
|
|
sinkpad = gst_pad_new ("sink", GST_PAD_SINK);
|
|
|
|
gst_pad_connect (srcpad, sinkpad);
|
|
|
|
gst_pad_set_negotiate_function (sinkpad, negotiate);
|
|
|
|
/* fill in our desired caps */
|
|
new = gst_caps_new_with_props (
|
|
"src_caps", /* name */
|
|
"audio/raw", /* mime */
|
|
gst_props_new (
|
|
"format", GST_PROPS_INT (16),
|
|
"depth", GST_PROPS_INT (16),
|
|
"rate", GST_PROPS_INT (48000),
|
|
"channels", GST_PROPS_INT (2),
|
|
NULL
|
|
)
|
|
);
|
|
|
|
gst_pad_set_caps (srcpad, new);
|
|
|
|
new = gst_caps_new_with_props (
|
|
"src_caps", /* name */
|
|
"video/raw", /* mime */
|
|
gst_props_new (
|
|
"format", GST_PROPS_FOURCC ('Y','U','Y','V'),
|
|
NULL
|
|
)
|
|
);
|
|
|
|
gst_pad_set_caps (srcpad, new);
|
|
|
|
exit (0);
|
|
}
|