Commit 9f12811b authored by Zaheer Abbas Merali's avatar Zaheer Abbas Merali
Browse files

sys/osxaudio/gstosxaudiosink.c: Register osxaudiosrc to the plugin.

Original commit message from CVS:
2006-04-28  Zaheer Abbas Merali  <zaheerabbas at merali dot org>

* sys/osxaudio/gstosxaudiosink.c:
(plugin_init):
Register osxaudiosrc to the plugin.
* sys/osxaudio/gstosxaudiosrc.c:
(gst_osx_audio_src_osxelement_do_init),
(gst_osx_audio_src_base_init), (gst_osx_audio_src_class_init),
(gst_osx_audio_src_init), (gst_osx_audio_src_set_property),
(gst_osx_audio_src_get_property),
(gst_osx_audio_src_create_ringbuffer), (gst_osx_audio_src_io_proc),
(gst_osx_audio_src_osxelement_init):
* sys/osxaudio/gstosxaudiosrc.h:
Port of osxaudiosrc to 0.10.
* sys/osxaudio/Makefile.am:
Add osxaudiosrc
parent 4c49dc04
2006-04-28 Zaheer Abbas Merali <zaheerabbas at merali dot org>
* sys/osxaudio/gstosxaudiosink.c:
(plugin_init):
Register osxaudiosrc to the plugin.
* sys/osxaudio/gstosxaudiosrc.c:
(gst_osx_audio_src_osxelement_do_init),
(gst_osx_audio_src_base_init), (gst_osx_audio_src_class_init),
(gst_osx_audio_src_init), (gst_osx_audio_src_set_property),
(gst_osx_audio_src_get_property),
(gst_osx_audio_src_create_ringbuffer), (gst_osx_audio_src_io_proc),
(gst_osx_audio_src_osxelement_init):
* sys/osxaudio/gstosxaudiosrc.h:
Port of osxaudiosrc to 0.10.
* sys/osxaudio/Makefile.am:
Add osxaudiosrc
2006-04-26 Zaheer Abbas Merali <zaheerabbas at merali dot org>
* sys/osxaudio/gstosxringbuffer.c:
......
......@@ -2,7 +2,8 @@ plugin_LTLIBRARIES = libgstosxaudio.la
libgstosxaudio_la_SOURCES = gstosxringbuffer.c \
gstosxaudioelement.c \
gstosxaudiosink.c
gstosxaudiosink.c \
gstosxaudiosrc.c
libgstosxaudio_la_CFLAGS = $(GST_CFLAGS) $(GST_BASE_CFLAGS) $(GSTPB_BASE_FLAGS)
libgstosxaudio_la_LIBADD = $(GST_LIBS) $(GST_BASE_LIBS) $(GSTPB_BASE_LIBS) -lgstaudio-@GST_MAJORMINOR@
......@@ -10,7 +11,8 @@ libgstosxaudio_la_LDFLAGS = $(GST_PLUGIN_LDFLAGS) -Wl,-framework -Wl,CoreAudio
noinst_HEADERS = gstosxaudiosink.h \
gstosxaudioelement.h \
gstosxringbuffer.h
gstosxringbuffer.h \
gstosxaudiosrc.h
......@@ -61,6 +61,8 @@
#include <gst/gst.h>
#include <CoreAudio/CoreAudio.h>
#include "gstosxaudiosink.h"
#include "gstosxaudiosrc.h"
#include "gstosxaudioelement.h"
GST_DEBUG_CATEGORY_STATIC (osx_audiosink_debug);
......@@ -91,7 +93,8 @@ static GstStaticPadTemplate sink_factory = GST_STATIC_PAD_TEMPLATE ("sink",
GST_STATIC_CAPS ("audio/x-raw-float, "
"endianness = (int) {" G_STRINGIFY (G_BYTE_ORDER) " }, "
"signed = (boolean) { TRUE }, "
"width = (int) 32, " "rate = (int) 44100, " "channels = (int) 2")
"width = (int) 32, "
"depth = (int) 32, " "rate = (int) 44100, " "channels = (int) 2")
);
static void gst_osx_audio_sink_set_property (GObject * object, guint prop_id,
......@@ -321,8 +324,12 @@ gst_osx_audio_sink_osxelement_init (gpointer g_iface, gpointer iface_data)
static gboolean
plugin_init (GstPlugin * plugin)
{
return gst_element_register (plugin, "osxaudiosink",
gboolean ret;
ret = gst_element_register (plugin, "osxaudiosink",
GST_RANK_NONE, GST_TYPE_OSX_AUDIO_SINK);
return ret && gst_element_register (plugin, "osxaudiosrc",
GST_RANK_NONE, GST_TYPE_OSX_AUDIO_SRC);
}
/* this is the structure that gstreamer looks for to register plugins
......
/* GStreamer
* Copyright (C) 1999,2000 Erik Walthinsen <omega@cse.ogi.edu>
* 2000 Wim Taymans <wtay@chello.be>
/*
* GStreamer
* Copyright 2005,2006 Zaheer Abbas Merali <zaheerabbas at merali dot org>
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the "Software"),
* to deal in the Software without restriction, including without limitation
* the rights to use, copy, modify, merge, publish, distribute, sublicense,
* and/or sell copies of the Software, and to permit persons to whom the
* Software is furnished to do so, subject to the following conditions:
*
* gstosxaudiosrc.c:
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
* DEALINGS IN THE SOFTWARE.
*
* Alternatively, the contents of this file may be used under the
* GNU Lesser General Public License Version 2.1 (the "LGPL"), in
* which case the following provisions apply instead of the ones
* mentioned above:
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library General Public
......@@ -20,201 +41,238 @@
* Boston, MA 02111-1307, USA.
*/
/**
* SECTION:element-plugin
*
* <refsect2>
* <title>Example launch line</title>
* <para>
* <programlisting>
* gst-launch -v -m osxaudiosrc ! fakesink
* </programlisting>
* </para>
* </refsect2>
*/
#ifdef HAVE_CONFIG_H
#include "config.h"
# include <config.h>
#endif
#include <fcntl.h>
#include <errno.h>
#include <unistd.h>
#include <string.h>
#include <gst/gst.h>
#include <CoreAudio/CoreAudio.h>
#include "gstosxaudiosrc.h"
#include "gstosxaudioelement.h"
#include <gstosxaudiosrc.h>
#include <gstosxaudioelement.h>
GST_DEBUG_CATEGORY_STATIC (osx_audiosrc_debug);
#define GST_CAT_DEFAULT osx_audiosrc_debug
/* elementfactory information */
static const GstElementDetails gst_osxaudiosrc_details =
GST_ELEMENT_DETAILS ("Audio Source (Mac OS X)",
static GstElementDetails gst_osx_audio_src_details =
GST_ELEMENT_DETAILS ("Audio Source (OSX)",
"Source/Audio",
"Read from the sound card",
"Input from a sound card in OS X",
"Zaheer Abbas Merali <zaheerabbas at merali dot org>");
/* Osxaudiosrc signals and args */
/* Filter signals and args */
enum
{
/* FILL ME */
LAST_SIGNAL
};
static GstStaticPadTemplate osxaudiosrc_src_factory =
GST_STATIC_PAD_TEMPLATE ("src",
enum
{
ARG_0,
ARG_DEVICE
};
static GstStaticPadTemplate src_factory = GST_STATIC_PAD_TEMPLATE ("src",
GST_PAD_SRC,
GST_PAD_ALWAYS,
GST_STATIC_CAPS ("audio/x-raw-float, "
"endianness = (int) BYTE_ORDER, "
"signed = (boolean) TRUE , "
"width = (int) 32, " "rate = (int) 44100, " "channels = (int) 2")
"endianness = (int) {" G_STRINGIFY (G_BYTE_ORDER) " }, "
"signed = (boolean) { TRUE }, "
"width = (int) 32, "
"depth = (int) 32, " "rate = (int) 44100, " "channels = (int) 2")
);
static void gst_osxaudiosrc_base_init (gpointer g_class);
static void gst_osxaudiosrc_class_init (GstOsxAudioSrcClass * klass);
static void gst_osxaudiosrc_init (GstOsxAudioSrc * osxaudiosrc);
static void gst_osxaudiosrc_dispose (GObject * object);
static void gst_osx_audio_src_set_property (GObject * object, guint prop_id,
const GValue * value, GParamSpec * pspec);
static void gst_osx_audio_src_get_property (GObject * object, guint prop_id,
GValue * value, GParamSpec * pspec);
static GstStateChangeReturn gst_osxaudiosrc_change_state (GstElement * element);
static GstData *gst_osxaudiosrc_get (GstPad * pad);
static GstRingBuffer *gst_osx_audio_src_create_ringbuffer (GstBaseAudioSrc *
src);
/*static GstCaps* gst_osx_audio_sink_getcaps (GstBaseSink * bsrc);*/
static void gst_osx_audio_src_osxelement_init (gpointer g_iface,
gpointer iface_data);
OSStatus gst_osx_audio_src_io_proc (AudioDeviceID inDevice,
const AudioTimeStamp * inNow, const AudioBufferList * inInputData,
const AudioTimeStamp * inInputTime, AudioBufferList * outOutputData,
const AudioTimeStamp * inOutputTime, void *inClientData);
static GstElementClass *parent_class = NULL;
/*static guint gst_osxaudiosrc_signals[LAST_SIGNAL] = { 0 }; */
GType
gst_osxaudiosrc_get_type (void)
static void
gst_osx_audio_src_osxelement_do_init (GType type)
{
static GType osxaudiosrc_type = 0;
if (!osxaudiosrc_type) {
static const GTypeInfo osxaudiosrc_info = {
sizeof (GstOsxAudioSrcClass),
gst_osxaudiosrc_base_init,
NULL,
(GClassInitFunc) gst_osxaudiosrc_class_init,
NULL,
NULL,
sizeof (GstOsxAudioSrc),
0,
(GInstanceInitFunc) gst_osxaudiosrc_init,
};
osxaudiosrc_type =
g_type_register_static (GST_TYPE_OSXAUDIOELEMENT, "GstOsxAudioSrc",
&osxaudiosrc_info, 0);
}
return osxaudiosrc_type;
static const GInterfaceInfo osxelement_info = {
gst_osx_audio_src_osxelement_init,
NULL,
NULL
};
GST_DEBUG_CATEGORY_INIT (osx_audiosrc_debug, "osxaudiosrc", 0,
"OSX Audio Src");
GST_DEBUG ("Adding static interface\n");
g_type_add_interface_static (type, GST_OSX_AUDIO_ELEMENT_TYPE,
&osxelement_info);
}
static void
gst_osxaudiosrc_base_init (gpointer g_class)
GST_BOILERPLATE_FULL (GstOsxAudioSrc, gst_osx_audio_src, GstBaseAudioSrc,
GST_TYPE_BASE_AUDIO_SRC, gst_osx_audio_src_osxelement_do_init)
static void gst_osx_audio_src_base_init (gpointer g_class)
{
GstElementClass *element_class = GST_ELEMENT_CLASS (g_class);
gst_element_class_set_details (element_class, &gst_osxaudiosrc_details);
gst_element_class_add_pad_template (element_class,
gst_static_pad_template_get (&osxaudiosrc_src_factory));
gst_static_pad_template_get (&src_factory));
gst_element_class_set_details (element_class, &gst_osx_audio_src_details);
}
/* initialize the plugin's class */
static void
gst_osxaudiosrc_class_init (GstOsxAudioSrcClass * klass)
gst_osx_audio_src_class_init (GstOsxAudioSrcClass * klass)
{
GObjectClass *gobject_class;
GstElementClass *gstelement_class;
GstBaseAudioSrcClass *gstbaseaudiosrc_class;
gobject_class = (GObjectClass *) klass;
gstelement_class = (GstElementClass *) klass;
gstbaseaudiosrc_class = (GstBaseAudioSrcClass *) klass;
parent_class = g_type_class_peek_parent (klass);
gobject_class->dispose = gst_osxaudiosrc_dispose;
gobject_class->set_property =
GST_DEBUG_FUNCPTR (gst_osx_audio_src_set_property);
gobject_class->get_property =
GST_DEBUG_FUNCPTR (gst_osx_audio_src_get_property);
gstelement_class->change_state = gst_osxaudiosrc_change_state;
g_object_class_install_property (gobject_class, ARG_DEVICE,
g_param_spec_int ("device", "Device ID", "Device ID of output device",
0, G_MAXINT, 0, G_PARAM_READWRITE));
gstbaseaudiosrc_class->create_ringbuffer =
GST_DEBUG_FUNCPTR (gst_osx_audio_src_create_ringbuffer);
}
/* initialize the new element
* instantiate pads and add them to element
* set functions
* initialize structure
*/
static void
gst_osxaudiosrc_init (GstOsxAudioSrc * osxaudiosrc)
gst_osx_audio_src_init (GstOsxAudioSrc * src, GstOsxAudioSrcClass * gclass)
{
osxaudiosrc->srcpad =
gst_pad_new_from_template (gst_static_pad_template_get
(&osxaudiosrc_src_factory), "src");
gst_pad_set_get_function (osxaudiosrc->srcpad, gst_osxaudiosrc_get);
gst_element_add_pad (GST_ELEMENT (osxaudiosrc), osxaudiosrc->srcpad);
/* GstElementClass *klass = GST_ELEMENT_GET_CLASS (sink); */
gst_base_src_set_live (GST_BASE_SRC (src), TRUE);
src->ringbuffer = NULL;
GST_DEBUG ("Initialising object\n");
gst_osx_audio_src_create_ringbuffer (GST_BASE_AUDIO_SRC (src));
}
static void
gst_osxaudiosrc_dispose (GObject * object)
gst_osx_audio_src_set_property (GObject * object, guint prop_id,
const GValue * value, GParamSpec * pspec)
{
/* GstOsxAudioSrc *osxaudiosrc = (GstOsxAudioSrc *) object; */
GstOsxAudioSrc *src = GST_OSX_AUDIO_SRC (object);
G_OBJECT_CLASS (parent_class)->dispose (object);
switch (prop_id) {
case ARG_DEVICE:
if (src->ringbuffer)
src->ringbuffer->device_id = g_value_get_int (value);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
}
}
static GstData *
gst_osxaudiosrc_get (GstPad * pad)
static void
gst_osx_audio_src_get_property (GObject * object, guint prop_id,
GValue * value, GParamSpec * pspec)
{
GstOsxAudioSrc *src;
GstBuffer *buf;
glong readbytes;
GstOsxAudioSrc *src = GST_OSX_AUDIO_SRC (object);
int val = 0;
src = GST_OSXAUDIOSRC (gst_pad_get_parent (pad));
switch (prop_id) {
case ARG_DEVICE:
if (src->ringbuffer)
val = src->ringbuffer->device_id;
buf = gst_buffer_new_and_alloc ((GST_OSXAUDIOELEMENT (src))->buffer_len);
g_value_set_int (value, val);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
}
}
readbytes =
read_buffer (GST_OSXAUDIOELEMENT (src), (char *) GST_BUFFER_DATA (buf));
/* GstElement vmethod implementations */
if (readbytes < 0) {
gst_buffer_unref (buf);
GST_ELEMENT_ERROR (src, RESOURCE, READ, (NULL), GST_ERROR_SYSTEM);
gst_object_unref (src);
return GST_DATA (gst_event_new (GST_EVENT_INTERRUPT));
}
if (readbytes == 0) {
gst_buffer_unref (buf);
gst_object_unref (src);
return GST_DATA (gst_event_new (GST_EVENT_INTERRUPT));
/* GstBaseAudioSink vmethod implementations */
static GstRingBuffer *
gst_osx_audio_src_create_ringbuffer (GstBaseAudioSrc * src)
{
GstOsxAudioSrc *osxsrc;
osxsrc = GST_OSX_AUDIO_SRC (src);
if (!osxsrc->ringbuffer) {
GST_DEBUG ("Creating ringbuffer\n");
osxsrc->ringbuffer = g_object_new (GST_TYPE_OSX_RING_BUFFER, NULL);
GST_DEBUG ("osx src 0x%x element 0x%x ioproc 0x%x\n", osxsrc,
GST_OSX_AUDIO_ELEMENT_GET_INTERFACE (osxsrc),
(void *) gst_osx_audio_src_io_proc);
osxsrc->ringbuffer->element = GST_OSX_AUDIO_ELEMENT_GET_INTERFACE (osxsrc);
}
GST_BUFFER_SIZE (buf) = readbytes;
GST_BUFFER_OFFSET (buf) = src->curoffset;
src->curoffset += readbytes;
return GST_RING_BUFFER (osxsrc->ringbuffer);
}
GST_DEBUG ("pushed buffer from soundcard of %ld bytes", readbytes);
OSStatus
gst_osx_audio_src_io_proc (AudioDeviceID inDevice, const AudioTimeStamp * inNow,
const AudioBufferList * inInputData, const AudioTimeStamp * inInputTime,
AudioBufferList * outOutputData, const AudioTimeStamp * inOutputTime,
void *inClientData)
{
GstOsxRingBuffer *buf = GST_OSX_RING_BUFFER (inClientData);
gst_object_unref (src);
guint8 *writeptr;
gint writeseg;
gint len;
return GST_DATA (buf);
}
if (gst_ring_buffer_prepare_read (GST_RING_BUFFER (buf), &writeseg, &writeptr,
&len)) {
static GstStateChangeReturn
gst_osxaudiosrc_change_state (GstElement * element, GstStateChange transition)
{
GstOsxAudioSrc *osxaudiosrc = GST_OSXAUDIOSRC (element);
OSErr status;
memcpy (writeptr, (char *) inInputData->mBuffers[0].mData, len);
GST_DEBUG ("osxaudiosrc: state change");
/* clear written samples */
/*gst_ring_buffer_clear (GST_RING_BUFFER(buf), writeseg); */
switch (transition) {
case GST_STATE_CHANGE_READY_TO_PAUSED:
osxaudiosrc->curoffset = 0;
break;
case GST_STATE_CHANGE_PAUSED_TO_PLAYING:
status =
AudioDeviceStart (GST_OSXAUDIOELEMENT (osxaudiosrc)->device_id,
inputAudioDeviceIOProc);
if (status)
GST_DEBUG ("AudioDeviceStart returned %d\n", (int) status);
break;
case GST_STATE_CHANGE_PLAYING_TO_PAUSED:
status =
AudioDeviceStop (GST_OSXAUDIOELEMENT (osxaudiosrc)->device_id,
inputAudioDeviceIOProc);
if (status)
GST_DEBUG ("AudioDeviceStop returned %d\n", (int) status);
break;
case GST_STATE_CHANGE_PAUSED_TO_READY:
break;
default:
break;
/* we wrote one segment */
gst_ring_buffer_advance (GST_RING_BUFFER (buf), 1);
}
return 0;
}
if (GST_ELEMENT_CLASS (parent_class)->change_state)
return GST_ELEMENT_CLASS (parent_class)->change_state (element, transition);
static void
gst_osx_audio_src_osxelement_init (gpointer g_iface, gpointer iface_data)
{
GstOsxAudioElementInterface *iface = (GstOsxAudioElementInterface *) g_iface;
return GST_STATE_CHANGE_SUCCESS;
iface->io_proc = gst_osx_audio_src_io_proc;
}
/* GStreamer
* Copyright (C) 1999,2000 Erik Walthinsen <omega@cse.ogi.edu>
* 2000 Wim Taymans <wtay@chello.be>
/*
* GStreamer
* Copyright 2005-2006 Zaheer Abbas Merali <zaheerabbas at merali dot org>
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the "Software"),
* to deal in the Software without restriction, including without limitation
* the rights to use, copy, modify, merge, publish, distribute, sublicense,
* and/or sell copies of the Software, and to permit persons to whom the
* Software is furnished to do so, subject to the following conditions:
*
* gstosxaudiosrc.h:
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
* DEALINGS IN THE SOFTWARE.
*
* Alternatively, the contents of this file may be used under the
* GNU Lesser General Public License Version 2.1 (the "LGPL"), in
* which case the following provisions apply instead of the ones
* mentioned above:
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library General Public
......@@ -20,55 +41,39 @@
* Boston, MA 02111-1307, USA.
*/
#ifndef __GST_OSXAUDIOSRC_H__
#define __GST_OSXAUDIOSRC_H__
#include <gst/gst.h>
#include "gstosxaudioelement.h"
#include <gst/audio/gstbaseaudiosrc.h>
#include "gstosxringbuffer.h"
G_BEGIN_DECLS
#define GST_TYPE_OSXAUDIOSRC \
(gst_osxaudiosrc_get_type())
#define GST_OSXAUDIOSRC(obj) \
(G_TYPE_CHECK_INSTANCE_CAST((obj),GST_TYPE_OSXAUDIOSRC,GstOsxAudioSrc))
#define GST_OSXAUDIOSRC_CLASS(klass) \
(G_TYPE_CHECK_CLASS_CAST((klass),GST_TYPE_OSXAUDIOSRC,GstOsxAudioSrcClass))
#define GST_IS_OSXAUDIOSRC(obj) \
(G_TYPE_CHECK_INSTANCE_TYPE((obj),GST_TYPE_OSXAUDIOSRC))
#define GST_IS_OSXAUDIOSRC_CLASS(obj) \
(G_TYPE_CHECK_CLASS_TYPE((klass),GST_TYPE_OSXAUDIOSRC))
/* #defines don't like whitespacey bits */
#define GST_TYPE_OSX_AUDIO_SRC \
(gst_osx_audio_src_get_type())
#define GST_OSX_AUDIO_SRC(obj) \
(G_TYPE_CHECK_INSTANCE_CAST((obj),GST_TYPE_OSX_AUDIO_SRC,GstOsxAudioSrc))
#define GST_OSX_AUDIO_SRC_CLASS(klass) \
(G_TYPE_CHECK_CLASS_CAST((klass),GST_TYPE_OSX_AUDIO_SRC,GstOsxAudioSrcClass))
typedef enum {
GST_OSXAUDIOSRC_OPEN = (GST_ELEMENT_FLAG_LAST << 0),
GST_OSXAUDIOSRC_FLAG_LAST = (GST_ELEMENT_FLAG_LAST << 2)
} GstOsxAudioSrcFlags;
typedef struct _GstOsxAudioSrc GstOsxAudioSrc;
typedef struct _GstOsxAudioSrc GstOsxAudioSrc;
typedef struct _GstOsxAudioSrcClass GstOsxAudioSrcClass;
struct _GstOsxAudioSrc {
GstOsxAudioElement element;
/* pads */
GstPad *srcpad;
gboolean need_eos; /* Do we need to emit an EOS? */
/* blocking */
gulong curoffset;
gulong buffersize;
struct _GstOsxAudioSrc
{
GstBaseAudioSrc src;
GstOsxRingBuffer *ringbuffer;
};
struct _GstOsxAudioSrcClass {
GstOsxAudioElementClass parent_class;
struct _GstOsxAudioSrcClass
{
GstBaseAudioSrcClass parent_class;
};
GType gst_osxaudiosrc_get_type(void);
GType gst_osx_audio_src_get_type (void);
G_END_DECLS
......
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