Commit ed5a0060 authored by Andy Wingo's avatar Andy Wingo

Initial revision

Original commit message from CVS:
Initial revision
parent d382799a
Makefile
Makefile.in
*.o
*.lo
*.la
.deps
.libs
filterdir = $(libdir)/gst
filter_LTLIBRARIES = libgstparseau.la
libgstparseau_la_SOURCES = gstparseau.c
libgstparseau_la_CFLAGS = $(GLIB_CFLAGS) $(XML_CFLAGS) $(GST_CFLAGS)
noinst_HEADERS = gstparseau.h
/* Gnome-Streamer
* 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.
*/
/* 2001/04/03 - Updated parseau to use caps nego
* Zaheer Merali <zaheer@grid9.net
*/
#include <stdlib.h>
#include <string.h>
#include <gstparseau.h>
/* elementfactory information */
static GstElementDetails gst_parseau_details = {
".au parser",
"Parser/Audio",
"Parse an .au file into raw audio",
VERSION,
"Erik Walthinsen <omega@cse.ogi.edu>",
"(C) 1999",
};
static GstCaps*
au_typefind (GstBuffer *buf, gpointer private)
{
GstCaps *new = NULL;
gulong *head = (gulong *) GST_BUFFER_DATA (buf);
if (*head == 0x2e736e64 || *head == 0x646e732e)
new = gst_caps_new ("au_typefind", "audio/au", NULL);
return new;
}
/* typefactory for 'au' */
static GstTypeDefinition audefinition = {
"parseau_audio/au",
"audio/au",
".au",
au_typefind,
};
GST_PADTEMPLATE_FACTORY (sink_factory_templ,
"sink",
GST_PAD_SINK,
GST_PAD_ALWAYS,
GST_CAPS_NEW (
"auparse_sink",
"audio/au",
NULL
)
)
GST_PADTEMPLATE_FACTORY (src_factory_templ,
"src",
GST_PAD_SRC,
GST_PAD_ALWAYS,
GST_CAPS_NEW (
"auparse_src",
"audio/raw",
"format", GST_PROPS_STRING ("int"),
//"law", GST_PROPS_INT_RANGE (0, 2),
"law", GST_PROPS_INT (0),
"endianness", GST_PROPS_INT (G_BYTE_ORDER),
"signed", GST_PROPS_LIST(
GST_PROPS_BOOLEAN (FALSE),
GST_PROPS_BOOLEAN (TRUE)
),
"width", GST_PROPS_LIST(
GST_PROPS_INT (8),
GST_PROPS_INT (16)
),
"depth", GST_PROPS_LIST(
GST_PROPS_INT (8),
GST_PROPS_INT (16)
),
"rate", GST_PROPS_INT_RANGE (8000,48000),
"channels", GST_PROPS_INT_RANGE (1, 2)
)
)
/* ParseAu signals and args */
enum {
/* FILL ME */
LAST_SIGNAL
};
enum {
ARG_0,
/* FILL ME */
};
static void gst_parseau_class_init (GstParseAuClass *klass);
static void gst_parseau_init (GstParseAu *parseau);
static void gst_parseau_chain (GstPad *pad,GstBuffer *buf);
static GstElementClass *parent_class = NULL;
//static guint gst_parseau_signals[LAST_SIGNAL] = { 0 };
GType
gst_parseau_get_type (void)
{
static GType parseau_type = 0;
if (!parseau_type) {
static const GTypeInfo parseau_info = {
sizeof(GstParseAuClass), NULL,
NULL,
(GClassInitFunc) gst_parseau_class_init,
NULL,
NULL,
sizeof(GstParseAu),
0,
(GInstanceInitFunc) gst_parseau_init,
};
parseau_type = g_type_register_static (GST_TYPE_ELEMENT, "GstParseAu", &parseau_info, 0);
}
return parseau_type;
}
static void
gst_parseau_class_init (GstParseAuClass *klass)
{
GstElementClass *gstelement_class;
gstelement_class = (GstElementClass*) klass;
parent_class = g_type_class_ref (GST_TYPE_ELEMENT);
}
static void
gst_parseau_init (GstParseAu *parseau)
{
parseau->sinkpad = gst_pad_new_from_template (
GST_PADTEMPLATE_GET (sink_factory_templ), "sink");
gst_pad_set_caps (parseau->sinkpad, gst_pad_get_padtemplate_caps (parseau->sinkpad));
gst_element_add_pad (GST_ELEMENT (parseau), parseau->sinkpad);
gst_pad_set_chain_function (parseau->sinkpad, gst_parseau_chain);
parseau->srcpad = gst_pad_new_from_template (
GST_PADTEMPLATE_GET (src_factory_templ), "src");
gst_element_add_pad (GST_ELEMENT (parseau), parseau->srcpad);
parseau->offset = 0;
parseau->size = 0;
parseau->encoding = 0;
parseau->frequency = 0;
parseau->channels = 0;
}
static void
gst_parseau_chain (GstPad *pad, GstBuffer *buf)
{
GstParseAu *parseau;
gchar *data;
glong size;
GstCaps* tempcaps;
g_return_if_fail (pad != NULL);
g_return_if_fail (GST_IS_PAD (pad));
g_return_if_fail (buf != NULL);
parseau = GST_PARSEAU (gst_pad_get_parent (pad));
GST_DEBUG (0, "gst_parseau_chain: got buffer in '%s'\n",
gst_element_get_name (GST_ELEMENT (parseau)));
data = GST_BUFFER_DATA (buf);
size = GST_BUFFER_SIZE (buf);
/* if we haven't seen any data yet... */
if (parseau->size == 0) {
GstBuffer *newbuf;
gulong *head = (gulong *)data;
/* normal format is big endian (au is a Sparc format) */
if (GULONG_FROM_BE (*(head++)) == 0x2e736e64) {
parseau->le = 0;
parseau->offset = GULONG_FROM_BE (*(head++));
parseau->size = GULONG_FROM_BE (*(head++));
parseau->encoding = GULONG_FROM_BE (*(head++));
parseau->frequency = GULONG_FROM_BE (*(head++));
parseau->channels = GULONG_FROM_BE (*(head++));
/* but I wouldn't be surprised by a little endian version */
} else if (GULONG_FROM_LE (*(head++)) == 0x2e736e64) {
parseau->le = 1;
parseau->offset = GULONG_FROM_LE(*(head++));
parseau->size = GULONG_FROM_LE(*(head++));
parseau->encoding = GULONG_FROM_LE(*(head++));
parseau->frequency = GULONG_FROM_LE(*(head++));
parseau->channels = GULONG_FROM_LE(*(head++));
} else {
g_warning ("help, dunno what I'm looking at!\n");
gst_buffer_unref(buf);
return;
}
g_print ("offset %ld, size %ld, encoding %ld, frequency %ld, channels %ld\n",
parseau->offset,parseau->size,parseau->encoding,
parseau->frequency,parseau->channels);
GST_DEBUG (0, "offset %ld, size %ld, encoding %ld, frequency %ld, channels %ld\n",
parseau->offset,parseau->size,parseau->encoding,
parseau->frequency,parseau->channels);
tempcaps = gst_caps_copy (gst_pad_get_padtemplate_caps (parseau->srcpad));
gst_caps_set (tempcaps, "format", GST_PROPS_STRING ("int"));
gst_caps_set (tempcaps, "rate", GST_PROPS_INT (parseau->frequency));
gst_caps_set (tempcaps, "channels", GST_PROPS_INT (parseau->channels));
switch (parseau->encoding) {
case 1:
gst_caps_set (tempcaps, "law", GST_PROPS_INT (1));
gst_caps_set (tempcaps, "depth", GST_PROPS_INT (8));
gst_caps_set (tempcaps, "width", GST_PROPS_INT (8));
gst_caps_set (tempcaps, "signed", GST_PROPS_BOOLEAN (FALSE));
break;
case 2:
gst_caps_set (tempcaps, "law", GST_PROPS_INT (0));
gst_caps_set (tempcaps, "depth", GST_PROPS_INT (8));
gst_caps_set (tempcaps, "width", GST_PROPS_INT (8));
gst_caps_set (tempcaps, "signed", GST_PROPS_BOOLEAN (TRUE));
break;
case 3:
gst_caps_set (tempcaps, "law", GST_PROPS_INT (0));
gst_caps_set (tempcaps, "depth", GST_PROPS_INT (16));
gst_caps_set (tempcaps, "width", GST_PROPS_INT (16));
gst_caps_set (tempcaps, "signed", GST_PROPS_BOOLEAN (TRUE));
break;
default:
g_warning ("help!, dont know how to deal with this format yet\n");
return;
}
gst_pad_set_caps (parseau->srcpad, tempcaps);
newbuf = gst_buffer_new ();
GST_BUFFER_DATA (newbuf) = (gpointer) malloc (size-(parseau->offset));
memcpy (GST_BUFFER_DATA (newbuf), data+24, size-(parseau->offset));
GST_BUFFER_SIZE (newbuf) = size-(parseau->offset);
gst_buffer_unref (buf);
gst_pad_push (parseau->srcpad, newbuf);
return;
}
gst_pad_push (parseau->srcpad, buf);
}
static gboolean
plugin_init (GModule *module, GstPlugin *plugin)
{
GstElementFactory *factory;
GstTypeFactory *type;
/* create the plugin structure */
/* create an elementfactory for the parseau element and list it */
factory = gst_elementfactory_new ("parseau", GST_TYPE_PARSEAU,
&gst_parseau_details);
g_return_val_if_fail (factory != NULL, FALSE);
gst_elementfactory_add_padtemplate (factory, GST_PADTEMPLATE_GET (sink_factory_templ));
gst_elementfactory_add_padtemplate (factory, GST_PADTEMPLATE_GET (src_factory_templ));
type = gst_typefactory_new (&audefinition);
gst_plugin_add_feature (plugin, GST_PLUGIN_FEATURE (factory));
gst_plugin_add_feature (plugin, GST_PLUGIN_FEATURE (type));
return TRUE;
}
GstPluginDesc plugin_desc = {
GST_VERSION_MAJOR,
GST_VERSION_MINOR,
"parseau",
plugin_init
};
/* Gnome-Streamer
* 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.
*/
#ifndef __GST_PARSEAU_H__
#define __GST_PARSEAU_H__
#include <config.h>
#include <gst/gst.h>
#ifdef __cplusplus
extern "C" {
#endif /* __cplusplus */
#define GST_TYPE_PARSEAU \
(gst_parseau_get_type())
#define GST_PARSEAU(obj) \
(G_TYPE_CHECK_INSTANCE_CAST((obj),GST_TYPE_PARSEAU,GstParseAu))
#define GST_PARSEAU_CLASS(klass) \
(G_TYPE_CHECK_CLASS_CAST((klass),GST_TYPE_PARSEAU,GstParseAu))
#define GST_IS_PARSEAU(obj) \
(G_TYPE_CHECK_INSTANCE_TYPE((obj),GST_TYPE_PARSEAU))
#define GST_IS_PARSEAU_CLASS(obj) \
(G_TYPE_CHECK_CLASS_TYPE((klass),GST_TYPE_PARSEAU))
typedef struct _GstParseAu GstParseAu;
typedef struct _GstParseAuClass GstParseAuClass;
struct _GstParseAu {
GstElement element;
GstPad *sinkpad,*srcpad;
guchar le;
glong offset;
glong size;
glong encoding;
glong frequency;
glong channels;
};
struct _GstParseAuClass {
GstElementClass parent_class;
};
GType gst_parseau_get_type (void);
#ifdef __cplusplus
}
#endif /* __cplusplus */
#endif /* __GST_PARSEAU_H__ */
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