gstreamer/ext/arts/gst_arts.c
Andy Wingo 4359de2616 removal of //-style comments don't link plugins to core libs -- the versioning is done internally to the plugins with...
Original commit message from CVS:
* removal of //-style comments
* don't link plugins to core libs -- the versioning is done internally to the plugins with the plugin_info struct,
and symbol resolution is lazy, so we can always know if a plugin can be loaded by the plugin_info data. in theory.
2002-03-19 04:10:06 +00:00

239 lines
6.3 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 <string.h>
#include <math.h>
#include <sys/soundcard.h>
/*#define DEBUG_ENABLED */
#include "gst_arts.h"
#include "gst_artsio_impl.h"
/* elementfactory information */
static GstElementDetails gst_arts_details = {
"aRts plugin",
"Filter/Audio",
"aRts plugin",
VERSION,
"Erik Walthinsen <omega@temple-baptist.com,
Stefan Westerfeld <stefan@space.twc.de>",
"(C) 2000",
};
GST_PADTEMPLATE_FACTORY ( sink_temp,
"sink",
GST_PAD_SINK,
GST_PAD_ALWAYS,
GST_CAPS_NEW (
"arts_sample",
"audio/raw",
"format", GST_PROPS_INT ("int"),
"law", GST_PROPS_INT (0),
"depth", GST_PROPS_INT (16),
"width", GST_PROPS_INT (16),
"signed", GST_PROPS_BOOLEAN (TRUE),
"channels", GST_PROPS_INT (2),
"endianness", GST_PROPS_INT (G_LITTLE_ENDIAN)
)
)
GST_PADTEMPLATE_FACTORY ( src_temp,
"src",
GST_PAD_SRC,
GST_PAD_ALWAYS,
GST_CAPS_NEW (
"arts_sample",
"audio/raw",
"format", GST_PROPS_INT ("int"),
"law", GST_PROPS_INT (0),
"depth", GST_PROPS_INT (16),
"width", GST_PROPS_INT (16),
"signed", GST_PROPS_BOOLEAN (TRUE),
"channels", GST_PROPS_INT (2),
"endianness", GST_PROPS_INT (G_LITTLE_ENDIAN)
)
)
static GstPadTemplate*
mad_src_template_factory (void)
{
static GstPadTemplate *templ = NULL;
if (!templ) {
templ = gst_padtemplate_new (
"src",
GST_PAD_SRC,
GST_PAD_ALWAYS,
gst_caps_new (
"mad_src",
"audio/raw",
gst_props_new (
"format", GST_PROPS_STRING ("int"),
"law", GST_PROPS_INT (0),
"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 (44100),
"channels", GST_PROPS_INT (2),
NULL)),
NULL);
}
return templ;
}
enum {
ARG_0,
ARG_LAST,
};
static void gst_arts_class_init (GstARTSClass *klass);
static void gst_arts_init (GstARTS *arts);
static void gst_arts_set_property (GObject *object, guint prop_id, const GValue *value, GParamSpec *pspec);
static void gst_arts_get_property (GObject *object, guint prop_id, GValue *value, GParamSpec *pspec);
static GstElementStateReturn gst_arts_change_state (GstElement *element);
static void gst_arts_loop (GstElement *element);
static GstElementClass *parent_class = NULL;
/*static guint gst_arts_signals[LAST_SIGNAL] = { 0 }; */
GType
gst_arts_get_type (void)
{
static GType gst_arts_type = 0;
if (!gst_arts_type) {
static const GTypeInfo gst_arts_info = {
sizeof(GstARTSClass), NULL,
NULL,
(GClassInitFunc)gst_arts_class_init,
NULL,
NULL,
sizeof(GstARTS),
0,
(GInstanceInitFunc)gst_arts_init,
};
gst_arts_type = g_type_register_static(GST_TYPE_ELEMENT, "GstArts", &gst_arts_info, 0);
}
return gst_arts_type;
}
static void
gst_arts_class_init (GstARTSClass *klass)
{
GObjectClass *gobject_class;
GstElementClass *gstelement_class;
gobject_class = (GObjectClass*)klass;
gstelement_class = (GstElementClass*)klass;
gobject_class->set_property = gst_arts_set_property;
gobject_class->get_property = gst_arts_get_property;
gstelement_class->change_state = gst_arts_change_state;
}
static void
gst_arts_init (GstARTS *arts)
{
arts->sinkpad = gst_pad_new_from_template(GST_PADTEMPLATE_GET(sink_temp),"sink");
gst_element_add_pad(GST_ELEMENT(arts),arts->sinkpad);
/* arts->srcpad = gst_pad_new_from_template(GST_PADTEMPLATE_GET(src_temp),"src"); */
arts->srcpad = gst_pad_new_from_template(mad_src_template_factory (), "src");
gst_element_add_pad(GST_ELEMENT(arts),arts->srcpad);
gst_element_set_loop_function (GST_ELEMENT (arts), gst_arts_loop);
arts->wrapper = gst_arts_wrapper_new(arts->sinkpad,arts->srcpad);
}
static void
gst_arts_set_property (GObject *object, guint prop_id, const GValue *value, GParamSpec *pspec)
{
GstARTS *arts = (GstARTS*)object;
GstARTSClass *oclass = (GstARTSClass*)(G_OBJECT_CLASS (object));
}
static void
gst_arts_get_property (GObject *object, guint prop_id, GValue *value, GParamSpec *pspec)
{
GstARTS *arts = (GstARTS*)object;
GstARTSClass *oclass = (GstARTSClass*)(G_OBJECT_CLASS (object));
}
static GstElementStateReturn
gst_arts_change_state (GstElement *element)
{
GstARTS *arts = (GstARTS*)element;
switch (GST_STATE_TRANSITION (element)) {
case GST_STATE_NULL_TO_READY:
break;
default:
break;
}
if (GST_ELEMENT_CLASS (parent_class)->change_state)
return GST_ELEMENT_CLASS (parent_class)->change_state (element);
return GST_STATE_SUCCESS;
}
static void
gst_arts_loop (GstElement *element)
{
GstARTS *arts = (GstARTS*)element;
g_return_if_fail (arts != NULL);
gst_arts_wrapper_do(arts->wrapper);
}
static gboolean
plugin_init (GModule *module, GstPlugin *plugin)
{
GstElementFactory *gstarts;
parent_class = g_type_class_ref(GST_TYPE_ELEMENT);
gstarts = gst_elementfactory_new("gstarts",GST_TYPE_ARTS,&gst_arts_details);
g_return_val_if_fail(gstarts != NULL, FALSE);
gst_elementfactory_add_padtemplate(gstarts, GST_PADTEMPLATE_GET(sink_temp));
/* gst_elementfactory_add_padtemplate(gstarts, GST_PADTEMPLATE_GET(src_temp)); */
gst_elementfactory_add_padtemplate(gstarts, mad_src_template_factory ());
gst_plugin_add_feature (plugin, GST_PLUGIN_FEATURE (gstarts));
return TRUE;
}
GstPluginDesc plugin_desc = {
GST_VERSION_MAJOR,
GST_VERSION_MINOR,
"gst_arts",
plugin_init
};