mirror of
https://gitlab.freedesktop.org/gstreamer/gstreamer.git
synced 2024-12-01 06:01:04 +00:00
64 lines
1.9 KiB
C
64 lines
1.9 KiB
C
/* GStreamer
|
|
* Copyright (C) <1999> Erik Walthinsen <omega@cse.ogi.edu>
|
|
* Library <2002> Ronald Bultje <rbultje@ronald.bitfreak.net>
|
|
*
|
|
* This library is free software; you can redistribute it and/or
|
|
* modify it under the terms of the GNU Library General Public
|
|
* License as published by the Free Software Foundation; either
|
|
* version 2 of the License, or (at your option) any later version.
|
|
*
|
|
* This library is distributed in the hope that it will be useful,
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
|
* Library General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU Library General Public
|
|
* License along with this library; if not, write to the
|
|
* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
|
|
* Boston, MA 02111-1307, USA.
|
|
*/
|
|
|
|
#include "video.h"
|
|
|
|
#define NUM_UNITS 1000000000
|
|
|
|
/* This is simply a convenience function, nothing more or less */
|
|
|
|
gdouble
|
|
gst_video_frame_rate (GstPad *pad)
|
|
{
|
|
GstFormat dest_format = GST_FORMAT_UNITS;
|
|
gint64 dest_value = 0;
|
|
gdouble fps;
|
|
|
|
/* do a convert request on the source pad */
|
|
if (!gst_pad_convert(pad,
|
|
GST_FORMAT_TIME, GST_SECOND * NUM_UNITS,
|
|
&dest_format, &dest_value))
|
|
{
|
|
g_warning("gstvideo: pad %s:%s failed to convert time to unit!\n",
|
|
GST_ELEMENT_NAME(gst_pad_get_parent (pad)), GST_PAD_NAME(pad));
|
|
return 0.;
|
|
}
|
|
|
|
fps = ((gdouble) dest_value) / NUM_UNITS;
|
|
|
|
GST_DEBUG(GST_CAT_ELEMENT_PADS, "Framerate request on pad %s:%s - %f fps",
|
|
GST_ELEMENT_NAME(gst_pad_get_parent (pad)), GST_PAD_NAME(pad), fps);
|
|
|
|
return fps;
|
|
}
|
|
|
|
static gboolean
|
|
plugin_init (GModule *module, GstPlugin *plugin)
|
|
{
|
|
gst_plugin_set_longname (plugin, "Convenience routines for video plugins");
|
|
return TRUE;
|
|
}
|
|
|
|
GstPluginDesc plugin_desc = {
|
|
GST_VERSION_MAJOR,
|
|
GST_VERSION_MINOR,
|
|
"gstvideo",
|
|
plugin_init
|
|
};
|