gstreamer/ext/tarkin/gsttarkin.c
David Schleef a962c0f40c Add buffer length checks to every typefinding function
Original commit message from CVS:
Add buffer length checks to every typefinding function
2003-07-24 08:49:43 +00:00

161 lines
4.4 KiB
C

/* GStreamer
* Copyright (C) <1999> Erik Walthinsen <omega@cse.ogi.edu>
*
* 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 "gsttarkinenc.h"
#include "gsttarkindec.h"
extern GstElementDetails tarkinenc_details;
extern GstElementDetails tarkindec_details;
static GstCaps* tarkin_type_find (GstBuffer *buf, gpointer private);
GstPadTemplate *enc_src_template, *enc_sink_template;
GstPadTemplate *dec_src_template, *dec_sink_template;
static GstCaps*
tarkin_caps_factory (void)
{
return
gst_caps_new (
"tarkin_tarkin",
"application/ogg",
NULL);
}
static GstCaps*
raw_caps_factory (void)
{
return
GST_CAPS_NEW (
"tarkin_raw",
"video/x-raw-rgb",
"bpp", GST_PROPS_INT (24),
"depth", GST_PROPS_INT (24),
"endianness", GST_PROPS_INT (G_BYTE_ORDER),
"red_mask", GST_PROPS_INT (0xff0000),
"green_mask", GST_PROPS_INT (0xff00),
"blue_mask", GST_PROPS_INT (0xff),
"width", GST_PROPS_INT_RANGE (0, G_MAXINT),
"height", GST_PROPS_INT_RANGE (0, G_MAXINT),
"framerate", GST_PROPS_FLOAT_RANGE (0, G_MAXFLOAT)
);
}
static GstTypeDefinition tarkindefinition =
{
"tarkin_video/x-ogg",
"application/ogg",
".ogg",
tarkin_type_find,
};
static GstCaps*
tarkin_type_find (GstBuffer *buf, gpointer private)
{
guint32 head;
if (GST_BUFFER_SIZE (buf) < 4)
return NULL;
/* FIXME */
return NULL;
head = GUINT32_FROM_BE (*((guint32 *)GST_BUFFER_DATA (buf)));
if (head != 0x4F676753)
return NULL;
return gst_caps_new ("tarkin_type_find", "application/ogg", NULL);
}
static gboolean
plugin_init (GModule *module, GstPlugin *plugin)
{
GstElementFactory *enc, *dec;
GstTypeFactory *type;
GstCaps *raw_caps, *tarkin_caps;
gst_plugin_set_longname (plugin, "The OGG Tarkin Codec");
/* create an elementfactory for the tarkinenc element */
enc = gst_element_factory_new ("tarkinenc", GST_TYPE_TARKINENC,
&tarkinenc_details);
g_return_val_if_fail (enc != NULL, FALSE);
raw_caps = raw_caps_factory ();
tarkin_caps = tarkin_caps_factory ();
/* register sink pads */
enc_sink_template = gst_pad_template_new ("sink",
GST_PAD_SINK,
GST_PAD_ALWAYS,
raw_caps,
NULL);
gst_element_factory_add_pad_template (enc, enc_sink_template);
/* register src pads */
enc_src_template = gst_pad_template_new ("src",
GST_PAD_SRC,
GST_PAD_ALWAYS,
tarkin_caps,
NULL);
gst_element_factory_add_pad_template (enc, enc_src_template);
gst_plugin_add_feature (plugin, GST_PLUGIN_FEATURE (enc));
/* create an elementfactory for the tarkindec element */
dec = gst_element_factory_new ("tarkindec", GST_TYPE_TARKINDEC,
&tarkindec_details);
g_return_val_if_fail (dec != NULL, FALSE);
raw_caps = raw_caps_factory ();
tarkin_caps = tarkin_caps_factory ();
/* register sink pads */
dec_sink_template = gst_pad_template_new ("sink",
GST_PAD_SINK,
GST_PAD_ALWAYS,
tarkin_caps,
NULL);
gst_element_factory_add_pad_template (dec, dec_sink_template);
/* register src pads */
dec_src_template = gst_pad_template_new ("src",
GST_PAD_SRC,
GST_PAD_ALWAYS,
raw_caps,
NULL);
gst_element_factory_add_pad_template (dec, dec_src_template);
gst_plugin_add_feature (plugin, GST_PLUGIN_FEATURE (dec));
type = gst_type_factory_new (&tarkindefinition);
gst_plugin_add_feature (plugin, GST_PLUGIN_FEATURE (type));
return TRUE;
}
GstPluginDesc plugin_desc = {
GST_VERSION_MAJOR,
GST_VERSION_MINOR,
"tarkin",
plugin_init
};