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148 lines
4.4 KiB
C
148 lines
4.4 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 "gstflacenc.h"
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#include "gstflacdec.h"
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extern GstElementDetails flacenc_details;
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extern GstElementDetails flacdec_details;
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static GstCaps* flac_type_find (GstBuffer *buf, gpointer private);
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GstPadTemplate *gst_flacdec_src_template, *gst_flacdec_sink_template;
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GstPadTemplate *gst_flacenc_src_template, *gst_flacenc_sink_template;
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static GstCaps*
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flac_caps_factory (void)
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{
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return
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gst_caps_new (
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"flac_flac",
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"audio/x-flac",
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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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"flac_raw",
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"audio/raw",
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gst_props_new (
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"format", GST_PROPS_STRING ("int"),
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"law", GST_PROPS_INT (0),
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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 GstTypeDefinition flacdefinition = {
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"flac_audio/x-flac",
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"audio/x-flac",
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".flac",
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flac_type_find,
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};
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static GstCaps*
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flac_type_find (GstBuffer *buf, gpointer private)
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{
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gulong head = GULONG_FROM_BE (*((gulong *)GST_BUFFER_DATA (buf)));
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if (head != 0x664C6143)
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return NULL;
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return gst_caps_new ("flac_type_find", "audio/x-flac", 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 *enc, *dec;
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GstTypeFactory *type;
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GstCaps *raw_caps, *flac_caps;
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/* this filter needs the bytestream package */
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if (!gst_library_load ("gstbytestream")) {
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gst_info ("vorbis:: could not load support library: 'gstbytestream'\n");
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return FALSE;
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}
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gst_plugin_set_longname (plugin, "The FLAC Lossless compressor Codec");
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/* create an elementfactory for the flacenc element */
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enc = gst_element_factory_new ("flacenc", GST_TYPE_FLACENC,
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&flacenc_details);
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g_return_val_if_fail (enc != NULL, FALSE);
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raw_caps = raw_caps_factory ();
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flac_caps = flac_caps_factory ();
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/* register sink pads */
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gst_flacenc_sink_template = gst_pad_template_new ("sink", GST_PAD_SINK,
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GST_PAD_ALWAYS,
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raw_caps, NULL);
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gst_element_factory_add_pad_template (enc, gst_flacenc_sink_template);
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/* register src pads */
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gst_flacenc_src_template = gst_pad_template_new ("src", GST_PAD_SRC,
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GST_PAD_ALWAYS,
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flac_caps, NULL);
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gst_element_factory_add_pad_template (enc, gst_flacenc_src_template);
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gst_plugin_add_feature (plugin, GST_PLUGIN_FEATURE (enc));
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/* create an elementfactory for the flacdec element */
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dec = gst_element_factory_new("flacdec",GST_TYPE_FLACDEC,
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&flacdec_details);
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g_return_val_if_fail(dec != NULL, FALSE);
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gst_element_factory_set_rank (dec, GST_ELEMENT_RANK_PRIMARY);
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/* register sink pads */
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gst_flacdec_sink_template = gst_pad_template_new ("sink", GST_PAD_SINK,
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GST_PAD_ALWAYS,
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flac_caps, NULL);
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gst_element_factory_add_pad_template (dec, gst_flacdec_sink_template);
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/* register src pads */
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gst_flacdec_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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gst_element_factory_add_pad_template (dec, gst_flacdec_src_template);
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gst_plugin_add_feature (plugin, GST_PLUGIN_FEATURE (dec));
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type = gst_type_factory_new (&flacdefinition);
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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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"flac",
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plugin_init
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};
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