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/* 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 <string.h>
#include <gst/gst.h>
#include <tremor/ivorbiscodec.h>
#include <tremor/ivorbisfile.h>
#include <gst/bytestream.h>
extern GType ivorbisfile_get_type(void);
extern GstElementDetails ivorbisfile_details;
static GstCaps* vorbis_type_find (GstBuffer *buf, gpointer private);
GstPadTemplate *gst_vorbisdec_src_template, *gst_vorbisdec_sink_template;
static GstCaps*
vorbis_caps_factory (void)
{
return
gst_caps_new (
"tremor_tremor",
"application/ogg",
NULL);
}
static GstCaps*
raw_caps_factory (void)
{
return
gst_caps_new (
"tremor_raw",
"audio/x-raw-int",
gst_props_new (
"endianness", GST_PROPS_INT (G_BYTE_ORDER),
"signed", GST_PROPS_BOOLEAN (TRUE),
"width", GST_PROPS_INT (16),
"depth", GST_PROPS_INT (16),
"rate", GST_PROPS_INT_RANGE (11025, 48000),
"channels", GST_PROPS_INT_RANGE (1, 2),
NULL));
}
static GstCaps*
raw_caps2_factory (void)
{
return
gst_caps_new (
"tremor_raw_float",
"audio/x-raw-float",
gst_props_new (
"depth", GST_PROPS_INT (32),
"endianness", GST_PROPS_INT (G_BYTE_ORDER),
"rate", GST_PROPS_INT_RANGE (11025, 48000),
"channels", GST_PROPS_INT (2), /* ?? */
NULL));
}
static GstTypeDefinition vorbisdefinition = {
"tremor_audio/x-ogg",
"application/ogg",
".ogg",
vorbis_type_find,
};
static GstCaps*
vorbis_type_find (GstBuffer *buf, gpointer private)
{
guint32 head;
if (GST_BUFFER_SIZE (buf) < 4)
return NULL;
head = GUINT32_FROM_BE (*((guint32 *)GST_BUFFER_DATA (buf)));
if (head != 0x4F676753)
return NULL;
return gst_caps_new ("vorbis_type_find", "application/ogg", NULL);
}
static gboolean
plugin_init (GModule *module, GstPlugin *plugin)
{
GstElementFactory *file;
GstTypeFactory *type;
GstCaps *raw_caps, *vorbis_caps, *raw_caps2;
if (!gst_library_load ("gstbytestream"))
return FALSE;
gst_plugin_set_longname (plugin, "The OGG Vorbis Codec");
raw_caps = raw_caps_factory ();
raw_caps2 = raw_caps2_factory ();
vorbis_caps = vorbis_caps_factory ();
/* register sink pads */
gst_vorbisdec_sink_template = gst_pad_template_new ("sink", GST_PAD_SINK,
GST_PAD_ALWAYS,
vorbis_caps, NULL);
raw_caps = gst_caps_prepend (raw_caps, raw_caps2);
/* register src pads */
gst_vorbisdec_src_template = gst_pad_template_new ("src", GST_PAD_SRC,
GST_PAD_ALWAYS,
raw_caps, NULL);
/* create an elementfactory for the vorbisfile element */
file = gst_element_factory_new ("tremor", ivorbisfile_get_type(),
&ivorbisfile_details);
g_return_val_if_fail(file != NULL, FALSE);
gst_element_factory_set_rank (file, GST_ELEMENT_RANK_PRIMARY);
/* register sink pads */
gst_element_factory_add_pad_template (file, gst_vorbisdec_sink_template);
/* register src pads */
gst_element_factory_add_pad_template (file, gst_vorbisdec_src_template);
gst_plugin_add_feature (plugin, GST_PLUGIN_FEATURE (file));
type = gst_type_factory_new (&vorbisdefinition);
gst_plugin_add_feature (plugin, GST_PLUGIN_FEATURE (type));
return TRUE;
}
GstPluginDesc plugin_desc = {
GST_VERSION_MAJOR,
GST_VERSION_MINOR,
"tremor",
plugin_init
};
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