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150 lines
4.2 KiB
C
150 lines
4.2 KiB
C
/* GStreamer
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* Copyright (C) <1999> Erik Walthinsen <omega@cse.ogi.edu>
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Library General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Library General Public License for more details.
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*
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* You should have received a copy of the GNU Library General Public
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* License along with this library; if not, write to the
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* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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* Boston, MA 02111-1307, USA.
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*/
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#include <string.h>
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#include <gst/gst.h>
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#include <tremor/ivorbiscodec.h>
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#include <tremor/ivorbisfile.h>
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#include <gst/bytestream/bytestream.h>
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extern GType ivorbisfile_get_type(void);
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extern GstElementDetails ivorbisfile_details;
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static GstCaps* vorbis_type_find (GstBuffer *buf, gpointer private);
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GstPadTemplate *gst_vorbisdec_src_template, *gst_vorbisdec_sink_template;
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static GstCaps*
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vorbis_caps_factory (void)
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{
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return
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gst_caps_new (
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"tremor_tremor",
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"application/ogg",
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NULL);
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}
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static GstCaps*
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raw_caps_factory (void)
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{
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return
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gst_caps_new (
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"tremor_raw",
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"audio/x-raw-int",
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gst_props_new (
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"endianness", GST_PROPS_INT (G_BYTE_ORDER),
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"signed", GST_PROPS_BOOLEAN (TRUE),
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"width", GST_PROPS_INT (16),
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"depth", GST_PROPS_INT (16),
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"rate", GST_PROPS_INT_RANGE (11025, 48000),
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"channels", GST_PROPS_INT_RANGE (1, 2),
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NULL));
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}
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static GstCaps*
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raw_caps2_factory (void)
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{
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return
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gst_caps_new (
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"tremor_raw_float",
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"audio/x-raw-float",
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gst_props_new (
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"depth", GST_PROPS_INT (32),
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"endianness", GST_PROPS_INT (G_BYTE_ORDER),
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"rate", GST_PROPS_INT_RANGE (11025, 48000),
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"channels", GST_PROPS_INT (2), /* ?? */
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NULL));
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}
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static GstTypeDefinition vorbisdefinition = {
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"tremor_audio/x-ogg",
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"application/ogg",
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".ogg",
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vorbis_type_find,
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};
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static GstCaps*
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vorbis_type_find (GstBuffer *buf, gpointer private)
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{
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guint32 head;
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if (GST_BUFFER_SIZE (buf) < 4)
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return NULL;
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head = GUINT32_FROM_BE (*((guint32 *)GST_BUFFER_DATA (buf)));
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if (head != 0x4F676753)
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return NULL;
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return gst_caps_new ("vorbis_type_find", "application/ogg", NULL);
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}
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static gboolean
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plugin_init (GModule *module, GstPlugin *plugin)
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{
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GstElementFactory *file;
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GstTypeFactory *type;
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GstCaps *raw_caps, *vorbis_caps, *raw_caps2;
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gst_plugin_set_longname (plugin, "The OGG Vorbis Codec");
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raw_caps = raw_caps_factory ();
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raw_caps2 = raw_caps2_factory ();
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vorbis_caps = vorbis_caps_factory ();
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/* register sink pads */
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gst_vorbisdec_sink_template = gst_pad_template_new ("sink", GST_PAD_SINK,
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GST_PAD_ALWAYS,
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vorbis_caps, NULL);
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raw_caps = gst_caps_prepend (raw_caps, raw_caps2);
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/* register src pads */
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gst_vorbisdec_src_template = gst_pad_template_new ("src", GST_PAD_SRC,
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GST_PAD_ALWAYS,
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raw_caps, NULL);
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/* create an elementfactory for the vorbisfile element */
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file = gst_element_factory_new ("tremor", ivorbisfile_get_type(),
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&ivorbisfile_details);
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g_return_val_if_fail(file != NULL, FALSE);
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gst_element_factory_set_rank (file, GST_ELEMENT_RANK_PRIMARY);
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/* register sink pads */
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gst_element_factory_add_pad_template (file, gst_vorbisdec_sink_template);
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/* register src pads */
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gst_element_factory_add_pad_template (file, gst_vorbisdec_src_template);
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gst_plugin_add_feature (plugin, GST_PLUGIN_FEATURE (file));
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/* this filter needs the bytestream package */
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if (!gst_library_load ("gstbytestream"))
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return FALSE;
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type = gst_type_factory_new (&vorbisdefinition);
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gst_plugin_add_feature (plugin, GST_PLUGIN_FEATURE (type));
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return TRUE;
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}
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GstPluginDesc plugin_desc = {
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GST_VERSION_MAJOR,
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GST_VERSION_MINOR,
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"tremor",
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plugin_init
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};
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