gstreamer/gst/pnm/gstpnm.c

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/* GStreamer
*
* 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.
*/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include "gstpnmdec.h"
#include "gstpnmenc.h"
#include "gstpnmutils.h"
#include <gst/gstplugin.h>
#include <gst/gstversion.h>
#include <gst/gsttypefind.h>
#include <string.h>
static GstStaticCaps bitmap_caps = GST_STATIC_CAPS (MIME_BM);
static GstStaticCaps graymap_caps = GST_STATIC_CAPS (MIME_GM);
static GstStaticCaps pixmap_caps = GST_STATIC_CAPS (MIME_PM);
#define BITMAP_CAPS (gst_static_caps_get (&bitmap_caps))
#define GRAYMAP_CAPS (gst_static_caps_get (&graymap_caps))
#define PIXMAP_CAPS (gst_static_caps_get (&pixmap_caps))
static void
gst_my_typefind_function (GstTypeFind * tf, gpointer d)
{
GstPnmInfoMngrResult r = GST_PNM_INFO_MNGR_RESULT_READING;
GstPnmInfoMngr mngr = { 0, };
guint i;
guint8 *data = NULL;
for (i = 0; r == GST_PNM_INFO_MNGR_RESULT_READING; i++) {
data = gst_type_find_peek (tf, i, 1);
if (!data)
break;
r = gst_pnm_info_mngr_scan (&mngr, data, 1);
}
switch (r) {
case GST_PNM_INFO_MNGR_RESULT_READING:
case GST_PNM_INFO_MNGR_RESULT_FAILED:
return;
case GST_PNM_INFO_MNGR_RESULT_FINISHED:
switch (mngr.info.type) {
case GST_PNM_TYPE_BITMAP:
gst_type_find_suggest (tf, GST_TYPE_FIND_LIKELY, BITMAP_CAPS);
return;
case GST_PNM_TYPE_GRAYMAP:
gst_type_find_suggest (tf, GST_TYPE_FIND_LIKELY, GRAYMAP_CAPS);
return;
case GST_PNM_TYPE_PIXMAP:
gst_type_find_suggest (tf, GST_TYPE_FIND_LIKELY, PIXMAP_CAPS);
return;
}
}
}
static gboolean
plugin_init (GstPlugin * plugin)
{
static gchar *exts[] = { "pnm", NULL };
if (!gst_type_find_register (plugin, "", GST_RANK_PRIMARY,
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gst_my_typefind_function, exts, gst_caps_from_string (MIME_ALL),
NULL, NULL))
return FALSE;
if (!gst_element_register (plugin, "pnmdec", GST_RANK_PRIMARY,
GST_TYPE_PNMDEC))
return FALSE;
if (!gst_element_register (plugin, "pnmenc", GST_RANK_PRIMARY,
GST_TYPE_PNMENC))
return FALSE;
return TRUE;
}
GST_PLUGIN_DEFINE (GST_VERSION_MAJOR, GST_VERSION_MINOR, "pnm",
"PNM plugin", plugin_init, VERSION, GST_LICENSE, GST_PACKAGE_NAME,
GST_PACKAGE_ORIGIN)