gstreamer/gst/avi/gstaviaudiodecoder.c

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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.
*/
/*#define GST_DEBUG_ENABLED */
#include <string.h>
#include "gstaviaudiodecoder.h"
/* elementfactory information */
static GstElementDetails gst_avi_audio_decoder_details = {
".avi parser",
"Parser/Video",
"Parse a .avi file into audio and video",
VERSION,
"Erik Walthinsen <omega@cse.ogi.edu>\n"
"Wim Taymans <wim.taymans@tvd.be>",
"(C) 1999",
};
/* AviAudioDecoder signals and args */
enum {
/* FILL ME */
LAST_SIGNAL
};
enum {
ARG_0,
/* FILL ME */
};
GST_PAD_TEMPLATE_FACTORY (sink_templ,
"sink",
GST_PAD_SINK,
GST_PAD_ALWAYS,
GST_CAPS_NEW (
"avidecoder_sink",
"video/avi",
"format", GST_PROPS_STRING ("strf_auds")
)
)
GST_PAD_TEMPLATE_FACTORY (src_audio_templ,
"src",
GST_PAD_SRC,
GST_PAD_ALWAYS,
GST_CAPS_NEW (
"src_audio",
"audio/raw",
"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_RANGE (11025, 44100),
"channels", GST_PROPS_INT_RANGE (1, 2)
)
)
static void gst_avi_audio_decoder_class_init (GstAviAudioDecoderClass *klass);
static void gst_avi_audio_decoder_init (GstAviAudioDecoder *avi_audio_decoder);
static void gst_avi_audio_decoder_chain (GstPad *pad, GstBuffer *buf);
static void gst_avi_audio_decoder_get_property (GObject *object, guint prop_id, GValue *value, GParamSpec *pspec);
static GstElementClass *parent_class = NULL;
/*static guint gst_avi_audio_decoder_signals[LAST_SIGNAL] = { 0 }; */
GType
gst_avi_audio_decoder_get_type(void)
{
static GType avi_audio_decoder_type = 0;
if (!avi_audio_decoder_type) {
static const GTypeInfo avi_audio_decoder_info = {
sizeof(GstAviAudioDecoderClass),
NULL,
NULL,
(GClassInitFunc)gst_avi_audio_decoder_class_init,
NULL,
NULL,
sizeof(GstAviAudioDecoder),
0,
(GInstanceInitFunc)gst_avi_audio_decoder_init,
};
avi_audio_decoder_type = g_type_register_static(GST_TYPE_ELEMENT, "GstAviAudioDecoder", &avi_audio_decoder_info, 0);
}
return avi_audio_decoder_type;
}
static void
gst_avi_audio_decoder_class_init (GstAviAudioDecoderClass *klass)
{
GObjectClass *gobject_class;
GstElementClass *gstelement_class;
gobject_class = (GObjectClass*)klass;
gstelement_class = (GstElementClass*)klass;
parent_class = g_type_class_ref (GST_TYPE_BIN);
gobject_class->get_property = gst_avi_audio_decoder_get_property;
}
static void
gst_avi_audio_decoder_init (GstAviAudioDecoder *avi_audio_decoder)
{
}
static void
gst_avi_audio_decoder_chain (GstPad *pad,
GstBuffer *buf)
{
GstAviAudioDecoder *avi_audio_decoder;
guchar *data;
gulong size;
g_return_if_fail (pad != NULL);
g_return_if_fail (GST_IS_PAD(pad));
g_return_if_fail (buf != NULL);
g_return_if_fail (GST_BUFFER_DATA(buf) != NULL);
avi_audio_decoder = GST_AVI_AUDIO_DECODER (gst_pad_get_parent (pad));
GST_DEBUG (0,"gst_avi_audio_decoder_chain: got buffer in %u", GST_BUFFER_OFFSET (buf));
g_print ("gst_avi_audio_decoder_chain: got buffer in %u\n", GST_BUFFER_OFFSET (buf));
data = (guchar *)GST_BUFFER_DATA (buf);
size = GST_BUFFER_SIZE (buf);
gst_buffer_unref (buf);
}
static void
gst_avi_audio_decoder_get_property (GObject *object, guint prop_id, GValue *value, GParamSpec *pspec)
{
GstAviAudioDecoder *src;
g_return_if_fail (GST_IS_AVI_AUDIO_DECODER (object));
src = GST_AVI_AUDIO_DECODER (object);
switch(prop_id) {
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
}
}
static gboolean
plugin_init (GModule *module, GstPlugin *plugin)
{
GstElementFactory *factory;
/* create an elementfactory for the avi_audio_decoder element */
factory = gst_element_factory_new ("aviaudiodecoder",GST_TYPE_AVI_AUDIO_DECODER,
&gst_avi_audio_decoder_details);
g_return_val_if_fail (factory != NULL, FALSE);
gst_element_factory_add_pad_template (factory, GST_PAD_TEMPLATE_GET (sink_templ));
gst_element_factory_add_pad_template (factory, GST_PAD_TEMPLATE_GET (src_audio_templ));
gst_plugin_add_feature (plugin, GST_PLUGIN_FEATURE (factory));
return TRUE;
}
GstPluginDesc plugin_desc = {
GST_VERSION_MAJOR,
GST_VERSION_MINOR,
"aviaudiodecoder",
plugin_init
};