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sys/osxaudio/: Port of osxaudiosink to 0.10

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Original commit message from CVS:
2006-04-26  Zaheer Abbas Merali  <zaheerabbas at merali dot org>

* sys/osxaudio/Makefile.am:
* sys/osxaudio/gstosxaudioelement.c:
(gst_osx_audio_element_get_type),
(gst_osx_audio_element_class_init):
* sys/osxaudio/gstosxaudioelement.h:
* sys/osxaudio/gstosxaudiosink.c:
(gst_osx_audio_sink_osxelement_do_init),
(gst_osx_audio_sink_base_init), (gst_osx_audio_sink_class_init),
(gst_osx_audio_sink_init), (gst_osx_audio_sink_set_property),
(gst_osx_audio_sink_get_property), (gst_osx_audio_sink_getcaps),
(gst_osx_audio_sink_create_ringbuffer),
(gst_osx_audio_sink_io_proc), (gst_osx_audio_sink_osxelement_init),
(plugin_init):
* sys/osxaudio/gstosxaudiosink.h:
Port of osxaudiosink to 0.10
This commit is contained in:
Zaheer Abbas Merali 2006-04-26 16:29:38 +00:00
parent a3fca5680b
commit cb163be477
6 changed files with 425 additions and 686 deletions
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18
ChangeLog
View file

@ -1,3 +1,21 @@
2006-04-26 Zaheer Abbas Merali <zaheerabbas at merali dot org>
* sys/osxaudio/Makefile.am:
* sys/osxaudio/gstosxaudioelement.c:
(gst_osx_audio_element_get_type),
(gst_osx_audio_element_class_init):
* sys/osxaudio/gstosxaudioelement.h:
* sys/osxaudio/gstosxaudiosink.c:
(gst_osx_audio_sink_osxelement_do_init),
(gst_osx_audio_sink_base_init), (gst_osx_audio_sink_class_init),
(gst_osx_audio_sink_init), (gst_osx_audio_sink_set_property),
(gst_osx_audio_sink_get_property), (gst_osx_audio_sink_getcaps),
(gst_osx_audio_sink_create_ringbuffer),
(gst_osx_audio_sink_io_proc), (gst_osx_audio_sink_osxelement_init),
(plugin_init):
* sys/osxaudio/gstosxaudiosink.h:
Port of osxaudiosink to 0.10
2006-04-26 Wim Taymans <wim@fluendo.com>
* ext/esd/esdsink.c: (gst_esdsink_prepare), (gst_esdsink_delay):

15
sys/osxaudio/Makefile.am
View file

@ -1,19 +1,16 @@
plugin_LTLIBRARIES = libgstosxaudio.la
libgstosxaudio_la_SOURCES = gstosxaudio.c \
libgstosxaudio_la_SOURCES = gstosxringbuffer.c \
gstosxaudioelement.c \
gstosxaudiosink.c \
gstosxaudiosrc.c
gstosxaudiosink.c
# FIXME: clean up these linker flags
libgstosxaudio_la_CFLAGS = $(GST_CFLAGS)
libgstosxaudio_la_LIBADD = $(top_builddir)/gst-libs/gst/libgstinterfaces-@GST_MAJORMINOR@.la $(GST_LIBS)
LIBS = -Wl,-framework -Wl,CoreAudio
libgstosxaudio_la_LDFLAGS = $(GST_PLUGIN_LDFLAGS) -framework CoreAudio
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@
libgstosxaudio_la_LDFLAGS = $(GST_PLUGIN_LDFLAGS) -Wl,-framework -Wl,CoreAudio
noinst_HEADERS = gstosxaudiosink.h \
gstosxaudioelement.h \
gstosxaudiosrc.h
gstosxringbuffer.h

457
sys/osxaudio/gstosxaudioelement.c
View file

@ -1,8 +1,29 @@
/* GStreamer
* Copyright (C) 1999,2000 Erik Walthinsen <omega@cse.ogi.edu>
* 2000 Wim Taymans <wim.taymans@chello.be>
/*
* GStreamer
* Copyright 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:
*
* gstosxaudioelement.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
@ -20,430 +41,50 @@
* Boston, MA 02111-1307, USA.
*/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include <CoreAudio/CoreAudio.h>
#include <pthread.h>
#include <unistd.h>
#include <errno.h>
#include <string.h>
#include <gst/gst.h>
#include "gstosxaudioelement.h"
enum
{
ARG_0,
ARG_DEVICE
};
/* elementfactory information */
static const GstElementDetails gst_osxaudioelement_details =
GST_ELEMENT_DETAILS ("Audio Mixer (OSX)",
"Generic/Audio",
"Mac OS X audio mixer element",
"Zaheer Abbas Merali <zaheerabbas at merali dot org>");
static void gst_osxaudioelement_base_init (GstOsxAudioElementClass * klass);
static void gst_osxaudioelement_class_init (GstOsxAudioElementClass * klass);
static void gst_osxaudioelement_init (GstOsxAudioElement * osxaudio);
static void gst_osxaudioelement_dispose (GObject * object);
static void gst_osxaudioelement_set_property (GObject * object,
guint prop_id, const GValue * value, GParamSpec * pspec);
static void gst_osxaudioelement_get_property (GObject * object,
guint prop_id, GValue * value, GParamSpec * pspec);
static GstStateChangeReturn gst_osxaudioelement_change_state (GstElement *
element);
static GstElementClass *parent_class = NULL;
static void
gst_osx_audio_element_class_init (GstOsxAudioElementInterface * klass);
GType
gst_osxaudioelement_get_type (void)
gst_osx_audio_element_get_type ()
{
static GType osxaudioelement_type = 0;
static GType gst_osxaudioelement_type = 0;
if (!osxaudioelement_type) {
static const GTypeInfo osxaudioelement_info = {
sizeof (GstOsxAudioElementClass),
(GBaseInitFunc) gst_osxaudioelement_base_init,
NULL,
(GClassInitFunc) gst_osxaudioelement_class_init,
if (!gst_osxaudioelement_type) {
static const GTypeInfo gst_osxaudioelement_info = {
sizeof (GstOsxAudioElementInterface),
(GBaseInitFunc) gst_osx_audio_element_class_init,
NULL,
NULL,
NULL,
NULL,
sizeof (GstOsxAudioElement),
0,
(GInstanceInitFunc) gst_osxaudioelement_init
0,
NULL,
};
osxaudioelement_type = g_type_register_static (GST_TYPE_ELEMENT,
"GstOsxAudioElement", &osxaudioelement_info, 0);
gst_osxaudioelement_type = g_type_register_static (G_TYPE_INTERFACE,
"GstOsxAudioElement", &gst_osxaudioelement_info, 0);
/*g_type_interface_add_prerequisite (gst_osxaudioelement_type,
GST_TYPE_IMPLEMENTS_INTERFACE); */
}
return osxaudioelement_type;
return gst_osxaudioelement_type;
}
static void
gst_osxaudioelement_base_init (GstOsxAudioElementClass * klass)
gst_osx_audio_element_class_init (GstOsxAudioElementInterface * klass)
{
GstElementClass *element_class = GST_ELEMENT_CLASS (klass);
static gboolean initialized = FALSE;
klass->device_combinations = NULL;
if (!initialized) {
gst_element_class_set_details (element_class, &gst_osxaudioelement_details);
}
static void
gst_osxaudioelement_class_init (GstOsxAudioElementClass * klass)
{
GObjectClass *gobject_class;
GstElementClass *gstelement_class;
gobject_class = (GObjectClass *) klass;
gstelement_class = (GstElementClass *) klass;
parent_class = g_type_class_peek_parent (klass);
g_object_class_install_property (G_OBJECT_CLASS (klass), ARG_DEVICE,
g_param_spec_int ("device", "Device index",
"Mac OS X CoreAudio Device Index (0 usually)", 0, G_MAXINT, 0,
G_PARAM_READWRITE));
gobject_class->set_property = gst_osxaudioelement_set_property;
gobject_class->get_property = gst_osxaudioelement_get_property;
gobject_class->dispose = gst_osxaudioelement_dispose;
gstelement_class->change_state = gst_osxaudioelement_change_state;
}
static void
gst_osxaudioelement_init (GstOsxAudioElement * osxaudio)
{
OSStatus status;
UInt32 propertySize;
pthread_mutex_init (&osxaudio->buffer_mutex, NULL);
pthread_mutex_unlock (&osxaudio->buffer_mutex);
propertySize = sizeof (osxaudio->device_id);
status =
AudioHardwareGetProperty (kAudioHardwarePropertyDefaultOutputDevice,
&propertySize, &(osxaudio->device_id));
if (status) {
GST_DEBUG ("AudioHardwareGetProperty returned %d\n", (int) status);
}
if (osxaudio->device_id == kAudioDeviceUnknown) {
GST_DEBUG ("AudioHardwareGetProperty: device_id is kAudioDeviceUnknown\n");
}
/* get requested buffer length */
propertySize = sizeof (osxaudio->buffer_len);
status =
AudioDeviceGetProperty (osxaudio->device_id, 0, false,
kAudioDevicePropertyBufferSize, &propertySize, &osxaudio->buffer_len);
if (status) {
GST_DEBUG
("AudioDeviceGetProperty returned %d when getting kAudioDevicePropertyBufferSize\n",
(int) status);
}
GST_DEBUG ("%5d osxaudio->buffer_len\n", (int) osxaudio->buffer_len);
}
static void
gst_osxaudioelement_dispose (GObject * object)
{
/* GstOsxAudioElement *osxaudio = (GstOsxAudioElement *) object; */
G_OBJECT_CLASS (parent_class)->dispose (object);
}
/* General purpose Ring-buffering routines */
int
write_buffer (GstOsxAudioElement * osxaudio, unsigned char *data, int len)
{
int len2 = 0;
int x;
while (len > 0) {
if (osxaudio->full_buffers == NUM_BUFS) {
GST_DEBUG ("Buffer overrun\n");
break;
}
x = osxaudio->buffer_len - osxaudio->buf_write_pos;
if (x > len)
x = len;
memcpy (osxaudio->buffer[osxaudio->buf_write] + osxaudio->buf_write_pos,
data + len2, x);
/* accessing common variables, locking mutex */
pthread_mutex_lock (&osxaudio->buffer_mutex);
len2 += x;
len -= x;
osxaudio->buffered_bytes += x;
osxaudio->buf_write_pos += x;
if (osxaudio->buf_write_pos >= osxaudio->buffer_len) {
/* block is full, find next! */
osxaudio->buf_write = (osxaudio->buf_write + 1) % NUM_BUFS;
++osxaudio->full_buffers;
osxaudio->buf_write_pos = 0;
}
pthread_mutex_unlock (&osxaudio->buffer_mutex);
initialized = TRUE;
}
return len2;
}
int
read_buffer (GstOsxAudioElement * osxaudio, unsigned char *data)
{
int len2 = 0;
int len = osxaudio->buffer_len;
int x;
while (len > 0) {
if (osxaudio->full_buffers == 0) {
GST_DEBUG ("Buffer underrun\n");
break;
}
x = osxaudio->buffer_len - osxaudio->buf_read_pos;
if (x > len)
x = len;
memcpy (data + len2,
osxaudio->buffer[osxaudio->buf_read] + osxaudio->buf_read_pos, x);
len2 += x;
len -= x;
/* accessing common variables, locking mutex */
pthread_mutex_lock (&osxaudio->buffer_mutex);
osxaudio->buffered_bytes -= x;
osxaudio->buf_read_pos += x;
if (osxaudio->buf_read_pos >= osxaudio->buffer_len) {
/* block is empty, find next! */
osxaudio->buf_read = (osxaudio->buf_read + 1) % NUM_BUFS;
--osxaudio->full_buffers;
osxaudio->buf_read_pos = 0;
}
pthread_mutex_unlock (&osxaudio->buffer_mutex);
}
return len2;
}
/* The function that the CoreAudio thread calls when it has data */
OSStatus
inputAudioDeviceIOProc (AudioDeviceID inDevice, const AudioTimeStamp * inNow,
const AudioBufferList * inInputData, const AudioTimeStamp * inInputTime,
AudioBufferList * outOutputData, const AudioTimeStamp * inOutputTime,
void *inClientData)
{
GstOsxAudioElement *osxaudio = GST_OSXAUDIOELEMENT (inClientData);
write_buffer (GST_OSXAUDIOELEMENT (osxaudio),
(char *) inInputData->mBuffers[0].mData, osxaudio->buffer_len);
return 0;
}
/* The function that the CoreAudio thread calls when it wants more data */
OSStatus
outputAudioDeviceIOProc (AudioDeviceID inDevice, const AudioTimeStamp * inNow,
const AudioBufferList * inInputData, const AudioTimeStamp * inInputTime,
AudioBufferList * outOutputData, const AudioTimeStamp * inOutputTime,
void *inClientData)
{
GstOsxAudioElement *osxaudio = GST_OSXAUDIOELEMENT (inClientData);
outOutputData->mBuffers[0].mDataByteSize =
read_buffer (osxaudio, (char *) outOutputData->mBuffers[0].mData);
return 0;
}
static gboolean
gst_osxaudioelement_open_audio (GstOsxAudioElement * osxaudio, gboolean input)
{
int i;
OSErr status;
GST_INFO ("osxaudioelement: attempting to open sound device");
/* Allocate ring-buffer memory */
for (i = 0; i < NUM_BUFS; i++)
osxaudio->buffer[i] = (unsigned char *) malloc (osxaudio->buffer_len);
if (input) {
status =
AudioDeviceAddIOProc (osxaudio->device_id, inputAudioDeviceIOProc,
osxaudio);
} else {
/* Set the IO proc that CoreAudio will call when it needs data */
status =
AudioDeviceAddIOProc (osxaudio->device_id, outputAudioDeviceIOProc,
osxaudio);
}
if (status) {
GST_DEBUG ("AudioDeviceAddIOProc returned %d\n", (int) status);
return FALSE;
}
pthread_mutex_lock (&osxaudio->buffer_mutex);
/* reset ring-buffer state */
osxaudio->buf_read = 0;
osxaudio->buf_write = 0;
osxaudio->buf_read_pos = 0;
osxaudio->buf_write_pos = 0;
osxaudio->full_buffers = 0;
osxaudio->buffered_bytes = 0;
/* zero buffer */
for (i = 0; i < NUM_BUFS; i++)
bzero (osxaudio->buffer[i], osxaudio->buffer_len);
pthread_mutex_unlock (&osxaudio->buffer_mutex);
return TRUE;
}
static void
gst_osxaudioelement_close_audio (GstOsxAudioElement * osxaudio, gboolean input)
{
OSErr status;
int i;
/* stop callback */
if (input) {
status = AudioDeviceStop (osxaudio->device_id, inputAudioDeviceIOProc);
} else {
status = AudioDeviceStop (osxaudio->device_id, outputAudioDeviceIOProc);
}
if (status)
GST_DEBUG ("AudioDeviceStop returned %d\n", (int) status);
if (input) {
status =
AudioDeviceRemoveIOProc (osxaudio->device_id, inputAudioDeviceIOProc);
} else {
status =
AudioDeviceRemoveIOProc (osxaudio->device_id, outputAudioDeviceIOProc);
}
if (status)
GST_DEBUG ("AudioDeviceRemoveIOProc " "returned %d\n", (int) status);
for (i = 0; i < NUM_BUFS; i++)
free (osxaudio->buffer[i]);
/* default virtual functions */
klass->io_proc = NULL;
}
static void
gst_osxaudioelement_set_property (GObject * object,
guint prop_id, const GValue * value, GParamSpec * pspec)
{
GstOsxAudioElement *osxaudio = GST_OSXAUDIOELEMENT (object);
OSStatus status;
int nDevices;
UInt32 propertySize;
int deviceid;
AudioDeviceID *devids;
switch (prop_id) {
case ARG_DEVICE:
/* check index given is in bounds, if not use default device */
status = AudioHardwareGetPropertyInfo (kAudioHardwarePropertyDevices,
&propertySize, NULL);
nDevices = propertySize / sizeof (AudioDeviceID);
deviceid = g_value_get_int (value);
if (deviceid < nDevices) {
devids = malloc (propertySize);
status =
AudioHardwareGetProperty (kAudioHardwarePropertyDevices,
&propertySize, devids);
osxaudio->device_id = devids[deviceid];
free (devids);
} else {
GST_DEBUG ("device index %d out of range. Max index is currently %d\n",
deviceid, nDevices);
}
break;
default:
break;
}
}
static void
gst_osxaudioelement_get_property (GObject * object,
guint prop_id, GValue * value, GParamSpec * pspec)
{
GstOsxAudioElement *osxaudio = GST_OSXAUDIOELEMENT (object);
OSStatus status;
int nDevices;
UInt32 propertySize;
AudioDeviceID *devids;
int i;
switch (prop_id) {
case ARG_DEVICE:
/* figure out what index the current one is */
status = AudioHardwareGetPropertyInfo (kAudioHardwarePropertyDevices,
&propertySize, NULL);
nDevices = propertySize / sizeof (AudioDeviceID);
devids = malloc (propertySize);
status =
AudioHardwareGetProperty (kAudioHardwarePropertyDevices,
&propertySize, devids);
for (i = 0; i < nDevices; i++) {
if (osxaudio->device_id == devids[i])
break;
}
g_value_set_int (value, i);
free (devids);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
}
}
static GstStateChangeReturn
gst_osxaudioelement_change_state (GstElement * element,
GstStateChange transition)
{
GstOsxAudioElement *osxaudio = GST_OSXAUDIOELEMENT (element);
const GList *padlist;
gboolean input = TRUE;
padlist = gst_element_get_pad_list (element);
if (padlist != NULL) {
GstPad *firstpad = padlist->data;
if (GST_PAD_IS_SINK (firstpad)) {
input = FALSE;
}
}
switch (transition) {
case GST_STATE_CHANGE_NULL_TO_READY:
if (!gst_osxaudioelement_open_audio (osxaudio, input)) {
return GST_STATE_CHANGE_FAILURE;
}
GST_INFO ("osxaudioelement: opened sound device");
break;
case GST_STATE_CHANGE_READY_TO_NULL:
gst_osxaudioelement_close_audio (osxaudio, input);
GST_INFO ("osxaudioelement: closed sound device");
break;
default:
break;
}
if (GST_ELEMENT_CLASS (parent_class)->change_state)
return GST_ELEMENT_CLASS (parent_class)->change_state (element, transition);
return GST_STATE_CHANGE_SUCCESS;
}

102
sys/osxaudio/gstosxaudioelement.h
View file

@ -1,8 +1,29 @@
/* GStreamer
* Copyright (C) 1999,2000 Erik Walthinsen <omega@cse.ogi.edu>
* 2000 Wim Taymans <wim.taymans@chello.be>
/*
* GStreamer
* Copyright 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:
*
* gstosxaudioelement.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
@ -20,72 +41,27 @@
* Boston, MA 02111-1307, USA.
*/
#ifndef __GST_OSXAUDIO_ELEMENT_H__
#define __GST_OSXAUDIO_ELEMENT_H__
#ifndef __GST_OSX_AUDIO_ELEMENT_H__
#define __GST_OSX_AUDIO_ELEMENT_H__
#include <gst/gst.h>
#include <CoreAudio/CoreAudio.h>
#include <pthread.h>
/* debugging category */
GST_DEBUG_CATEGORY_EXTERN (osxaudio_debug);
#define GST_CAT_DEFAULT osxaudio_debug
#define GST_OSX_AUDIO_ELEMENT_TYPE (gst_osx_audio_element_get_type())
#define GST_OSX_AUDIO_ELEMENT(obj) (G_TYPE_CHECK_INSTANCE_CAST ((obj), GST_OSX_AUDIO_ELEMENT_TYPE, GstOsxAudioElementInterface))
#define GST_IS_OSX_AUDIO_ELEMENT(obj) (G_TYPE_CHECK_INSTANCE_TYPE ((obj), GST_OSX_AUDIO_ELEMENT_TYPE))
#define GST_OSX_AUDIO_ELEMENT_GET_INTERFACE(inst) (G_TYPE_INSTANCE_GET_INTERFACE ((inst), GST_OSX_AUDIO_ELEMENT_TYPE, GstOsxAudioElementInterface))
G_BEGIN_DECLS
OSStatus outputAudioDeviceIOProc(AudioDeviceID inDevice, const AudioTimeStamp *inNow, const AudioBufferList *inInputData, const AudioTimeStamp *inInputTime, AudioBufferList *outOutputData, const AudioTimeStamp *inOutputTime, void *inClientData);
OSStatus inputAudioDeviceIOProc(AudioDeviceID inDevice, const AudioTimeStamp *inNow, const AudioBufferList *inInputData, const AudioTimeStamp *inInputTime, AudioBufferList *outOutputData, const AudioTimeStamp *inOutputTime, void *inClientData);
#define GST_TYPE_OSXAUDIOELEMENT \
(gst_osxaudioelement_get_type())
#define GST_OSXAUDIOELEMENT(obj) \
(G_TYPE_CHECK_INSTANCE_CAST((obj),GST_TYPE_OSXAUDIOELEMENT,GstOsxAudioElement))
#define GST_OSXAUDIOELEMENT_CLASS(klass) \
(G_TYPE_CHECK_CLASS_CAST((klass),GST_TYPE_OSXAUDIOELEMENT,GstOsxAudioElementClass))
#define GST_IS_OSXAUDIOELEMENT(obj) \
(G_TYPE_CHECK_INSTANCE_TYPE((obj),GST_TYPE_OSXAUDIOELEMENT))
#define GST_IS_OSXAUDIOELEMENT_CLASS(klass) \
(G_TYPE_CHECK_CLASS_TYPE((klass),GST_TYPE_OSXAUDIOELEMENT))
#define GST_OSXAUDIOELEMENT_GET_CLASS(obj) \
(G_TYPE_INSTANCE_GET_CLASS ((obj), GST_TYPE_OSXAUDIOELEMENT, GstOsxAudioElementClass))
typedef struct _GstOsxAudioElement GstOsxAudioElement;
typedef struct _GstOsxAudioElementClass GstOsxAudioElementClass;
/* This is large, but best (maybe it should be even larger).
* CoreAudio supposedly has an internal latency in the order of 2ms */
#define NUM_BUFS 128
struct _GstOsxAudioElement
{
/* yes, we're a gstelement too */
GstElement parent;
pthread_mutex_t buffer_mutex; /* mutex covering buffer variables */
AudioDeviceID device_id;
unsigned char *buffer[NUM_BUFS];
unsigned int buffer_len;
unsigned int buf_read;
unsigned int buf_write;
unsigned int buf_read_pos;
unsigned int buf_write_pos;
int full_buffers;
int buffered_bytes;
typedef struct _GstOsxAudioElementInterface GstOsxAudioElementInterface;
struct _GstOsxAudioElementInterface {
GTypeInterface parent;
OSStatus (*io_proc) (AudioDeviceID inDevice, const AudioTimeStamp *inNow, const AudioBufferList *inInputData, const AudioTimeStamp *inInputTime, AudioBufferList *outOutputData, const AudioTimeStamp *inOutputTime, void *inClientData);
};
struct _GstOsxAudioElementClass {
GstElementClass klass;
GType gst_osx_audio_element_get_type (void);
GList *device_combinations;
};
GType gst_osxaudioelement_get_type (void);
int read_buffer(GstOsxAudioElement* osxaudio, unsigned char* data);
int write_buffer(GstOsxAudioElement* osxaudio, unsigned char* data, int len);
G_END_DECLS
#endif /* __GST_OSXAUDIO_ELEMENT_H__ */
#endif

427
sys/osxaudio/gstosxaudiosink.c
View file

@ -1,8 +1,29 @@
/* GStreamer
* Copyright (C) 1999,2000 Erik Walthinsen <omega@cse.ogi.edu>
* 2000 Wim Taymans <wim.taymans@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:
*
* gstosxaudiosink.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
@ -20,213 +41,297 @@
* Boston, MA 02111-1307, USA.
*/
/**
* SECTION:element-plugin
*
* <refsect2>
* <title>Example launch line</title>
* <para>
* <programlisting>
* gst-launch -v -m audiotestsrc ! audioconvert ! osxaudiosink
* </programlisting>
* </para>
* </refsect2>
*/
#ifdef HAVE_CONFIG_H
#include "config.h"
# include <config.h>
#endif
#include <gst/gst.h>
#include <CoreAudio/CoreAudio.h>
#include <errno.h>
#include <unistd.h>
#include <string.h>
#include "gstosxaudiosink.h"
#include "gstosxaudioelement.h"
/* elementfactory information */
static const GstElementDetails gst_osxaudiosink_details =
GST_ELEMENT_DETAILS ("Audio Sink (Mac OS X)",
GST_DEBUG_CATEGORY_STATIC (osx_audiosink_debug);
#define GST_CAT_DEFAULT osx_audiosink_debug
static GstElementDetails gst_osx_audio_sink_details =
GST_ELEMENT_DETAILS ("Audio Sink (OSX)",
"Sink/Audio",
"Output to a Mac OS X CoreAudio Sound Device",
"Output to a sound card in OS X",
"Zaheer Abbas Merali <zaheerabbas at merali dot org>");
static void gst_osxaudiosink_base_init (gpointer g_class);
static void gst_osxaudiosink_class_init (GstOsxAudioSinkClass * klass);
static void gst_osxaudiosink_init (GstOsxAudioSink * osxaudiosink);
static void gst_osxaudiosink_dispose (GObject * object);
static GstStateChangeReturn gst_osxaudiosink_change_state (GstElement *
element);
static void gst_osxaudiosink_chain (GstPad * pad, GstData * _data);
/* OssSink signals and args */
/* Filter signals and args */
enum
{
SIGNAL_HANDOFF,
/* FILL ME */
LAST_SIGNAL
};
static GstStaticPadTemplate osxaudiosink_sink_factory =
GST_STATIC_PAD_TEMPLATE ("sink",
enum
{
ARG_0,
ARG_DEVICE
};
static GstStaticPadTemplate sink_factory = GST_STATIC_PAD_TEMPLATE ("sink",
GST_PAD_SINK,
GST_PAD_ALWAYS,
GST_STATIC_CAPS ("audio/x-raw-float, "
"endianness = (int) BYTE_ORDER, "
"signed = (boolean) TRUE, "
"endianness = (int) {" G_STRINGIFY (G_BYTE_ORDER) " }, "
"signed = (boolean) { TRUE }, "
"width = (int) 32, " "rate = (int) 44100, " "channels = (int) 2")
);
static GstElementClass *parent_class = NULL;
static guint gst_osssink_signals[LAST_SIGNAL] = { 0 };
static void gst_osx_audio_sink_set_property (GObject * object, guint prop_id,
const GValue * value, GParamSpec * pspec);
static void gst_osx_audio_sink_get_property (GObject * object, guint prop_id,
GValue * value, GParamSpec * pspec);
static GstCaps *gst_osx_audio_sink_getcaps (GstBaseSink * sink);
GType
gst_osxaudiosink_get_type (void)
static GstRingBuffer *gst_osx_audio_sink_create_ringbuffer (GstBaseAudioSink *
sink);
/*static GstCaps* gst_osx_audio_sink_getcaps (GstBaseSink * bsink);*/
static void gst_osx_audio_sink_osxelement_init (gpointer g_iface,
gpointer iface_data);
OSStatus gst_osx_audio_sink_io_proc (AudioDeviceID inDevice,
const AudioTimeStamp * inNow, const AudioBufferList * inInputData,
const AudioTimeStamp * inInputTime, AudioBufferList * outOutputData,
const AudioTimeStamp * inOutputTime, void *inClientData);
static void
gst_osx_audio_sink_osxelement_do_init (GType type)
{
static GType osxaudiosink_type = 0;
static const GInterfaceInfo osxelement_info = {
gst_osx_audio_sink_osxelement_init,
NULL,
NULL
};
if (!osxaudiosink_type) {
static const GTypeInfo osxaudiosink_info = {
sizeof (GstOsxAudioSinkClass),
gst_osxaudiosink_base_init,
NULL,
(GClassInitFunc) gst_osxaudiosink_class_init,
NULL,
NULL,
sizeof (GstOsxAudioSink),
0,
(GInstanceInitFunc) gst_osxaudiosink_init,
};
osxaudiosink_type =
g_type_register_static (GST_TYPE_OSXAUDIOELEMENT, "GstOsxAudioSink",
&osxaudiosink_info, 0);
}
return osxaudiosink_type;
GST_DEBUG_CATEGORY_INIT (osx_audiosink_debug, "osxaudiosink", 0,
"OSX Audio Sink");
GST_DEBUG ("Adding static interface\n");
g_type_add_interface_static (type, GST_OSX_AUDIO_ELEMENT_TYPE,
&osxelement_info);
}
static void
gst_osxaudiosink_dispose (GObject * object)
{
/* GstOsxAudioSink *osxaudiosink = (GstOsxAudioSink *) object; */
GST_BOILERPLATE_FULL (GstOsxAudioSink, gst_osx_audio_sink, GstBaseAudioSink,
GST_TYPE_BASE_AUDIO_SINK, gst_osx_audio_sink_osxelement_do_init)
/*gst_object_unparent (GST_OBJECT (osxaudiosink->provided_clock)); */
G_OBJECT_CLASS (parent_class)->dispose (object);
}
static void
gst_osxaudiosink_base_init (gpointer g_class)
static void gst_osx_audio_sink_base_init (gpointer g_class)
{
GstElementClass *element_class = GST_ELEMENT_CLASS (g_class);
gst_element_class_set_details (element_class, &gst_osxaudiosink_details);
gst_element_class_add_pad_template (element_class,
gst_static_pad_template_get (&osxaudiosink_sink_factory));
gst_static_pad_template_get (&sink_factory));
gst_element_class_set_details (element_class, &gst_osx_audio_sink_details);
}
/* initialize the plugin's class */
static void
gst_osxaudiosink_class_init (GstOsxAudioSinkClass * klass)
gst_osx_audio_sink_class_init (GstOsxAudioSinkClass * klass)
{
GObjectClass *gobject_class;
GstElementClass *gstelement_class;
GstBaseSinkClass *gstbasesink_class;
GstBaseAudioSinkClass *gstbaseaudiosink_class;
gobject_class = (GObjectClass *) klass;
gstelement_class = (GstElementClass *) klass;
gstbasesink_class = (GstBaseSinkClass *) klass;
gstbaseaudiosink_class = (GstBaseAudioSinkClass *) klass;
parent_class = g_type_class_peek_parent (klass);
gst_osssink_signals[SIGNAL_HANDOFF] =
g_signal_new ("handoff", G_TYPE_FROM_CLASS (klass), G_SIGNAL_RUN_LAST,
G_STRUCT_OFFSET (GstOsxAudioSinkClass, handoff), NULL, NULL,
g_cclosure_marshal_VOID__VOID, G_TYPE_NONE, 0);
gobject_class->set_property =
GST_DEBUG_FUNCPTR (gst_osx_audio_sink_set_property);
gobject_class->get_property =
GST_DEBUG_FUNCPTR (gst_osx_audio_sink_get_property);
gobject_class->dispose = gst_osxaudiosink_dispose;
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));
gstbasesink_class->get_caps = GST_DEBUG_FUNCPTR (gst_osx_audio_sink_getcaps);
gstbaseaudiosink_class->create_ringbuffer =
GST_DEBUG_FUNCPTR (gst_osx_audio_sink_create_ringbuffer);
}
/* initialize the new element
* instantiate pads and add them to element
* set functions
* initialize structure
*/
static void
gst_osx_audio_sink_init (GstOsxAudioSink * sink, GstOsxAudioSinkClass * gclass)
{
/* GstElementClass *klass = GST_ELEMENT_GET_CLASS (sink); */
sink->ringbuffer = NULL;
GST_DEBUG ("Initialising object\n");
gst_osx_audio_sink_create_ringbuffer (sink);
gstelement_class->change_state =
GST_DEBUG_FUNCPTR (gst_osxaudiosink_change_state);
}
static void
gst_osxaudiosink_init (GstOsxAudioSink * osxaudiosink)
gst_osx_audio_sink_set_property (GObject * object, guint prop_id,
const GValue * value, GParamSpec * pspec)
{
osxaudiosink->sinkpad =
gst_pad_new_from_template (gst_static_pad_template_get
(&osxaudiosink_sink_factory), "sink");
gst_element_add_pad (GST_ELEMENT (osxaudiosink), osxaudiosink->sinkpad);
GstOsxAudioSink *sink = GST_OSX_AUDIO_SINK (object);
gst_pad_set_chain_function (osxaudiosink->sinkpad, gst_osxaudiosink_chain);
GST_DEBUG ("initializing osxaudiosink");
GST_OBJECT_FLAG_SET (osxaudiosink, GST_ELEMENT_THREAD_SUGGESTED);
GST_OBJECT_FLAG_SET (osxaudiosink, GST_ELEMENT_EVENT_AWARE);
}
static void
gst_osxaudiosink_chain (GstPad * pad, GstData * _data)
{
GstBuffer *buf = GST_BUFFER (_data);
GstOsxAudioSink *osxaudiosink;
guchar *data;
guint to_write;
gint amount_written;
/* this has to be an audio buffer */
osxaudiosink = GST_OSXAUDIOSINK (gst_pad_get_parent (pad));
if (GST_IS_EVENT (buf)) {
GstEvent *event = GST_EVENT (buf);
switch (GST_EVENT_TYPE (event)) {
case GST_EVENT_EOS:
gst_pad_event_default (pad, event);
gst_object_unref (osxaudiosink);
return;
case GST_EVENT_DISCONTINUOUS:
/* pass-through */
default:
gst_object_unref (osxaudiosink);
gst_pad_event_default (pad, event);
return;
}
g_assert_not_reached ();
}
data = GST_BUFFER_DATA (buf);
to_write = GST_BUFFER_SIZE (buf);
amount_written = 0;
while (amount_written < to_write) {
data += amount_written;
to_write -= amount_written;
amount_written =
write_buffer (GST_OSXAUDIOELEMENT (osxaudiosink), data, to_write);
}
gst_buffer_unref (buf);
gst_object_unref (osxaudiosink);
}
static GstStateChangeReturn
gst_osxaudiosink_change_state (GstElement * element, GstStateChange transition)
{
GstOsxAudioSink *osxaudiosink;
OSErr status;
osxaudiosink = GST_OSXAUDIOSINK (element);
switch (transition) {
case GST_STATE_CHANGE_READY_TO_PAUSED:
break;
case GST_STATE_CHANGE_PAUSED_TO_PLAYING:
status =
AudioDeviceStart (GST_OSXAUDIOELEMENT (osxaudiosink)->device_id,
outputAudioDeviceIOProc);
if (status)
GST_DEBUG ("AudioDeviceStart returned %d\n", (int) status);
break;
case GST_STATE_CHANGE_PLAYING_TO_PAUSED:
status =
AudioDeviceStop (GST_OSXAUDIOELEMENT (osxaudiosink)->device_id,
outputAudioDeviceIOProc);
if (status)
GST_DEBUG ("AudioDeviceStop returned %d\n", (int) status);
break;
case GST_STATE_CHANGE_PAUSED_TO_READY:
switch (prop_id) {
case ARG_DEVICE:
if (sink->ringbuffer)
sink->ringbuffer->device_id = g_value_get_int (value);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
}
if (GST_ELEMENT_CLASS (parent_class)->change_state)
return GST_ELEMENT_CLASS (parent_class)->change_state (element, transition);
return GST_STATE_CHANGE_SUCCESS;
}
static void
gst_osx_audio_sink_get_property (GObject * object, guint prop_id,
GValue * value, GParamSpec * pspec)
{
GstOsxAudioSink *sink = GST_OSX_AUDIO_SINK (object);
int val = 0;
switch (prop_id) {
case ARG_DEVICE:
if (sink->ringbuffer)
val = sink->ringbuffer->device_id;
g_value_set_int (value, val);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
}
}
/* GstElement vmethod implementations */
/* GstBaseSink vmethod implementations */
static GstCaps *
gst_osx_audio_sink_getcaps (GstBaseSink * sink)
{
GstCaps *caps;
GstOsxAudioSink *osxsink;
OSStatus status;
AudioValueRange rates[10];
UInt32 propertySize;
int i;
propertySize = sizeof (AudioValueRange) * 9;
osxsink = GST_OSX_AUDIO_SINK (sink);
caps = gst_caps_copy (gst_pad_get_pad_template_caps (GST_BASE_SINK_PAD
(sink)));
status = AudioDeviceGetProperty (osxsink->ringbuffer->device_id, 0, FALSE,
kAudioDevicePropertyAvailableNominalSampleRates, &propertySize, &rates);
GST_DEBUG
("Getting available sample rates: Status: %d number of ranges: %d\n",
status, propertySize / sizeof (AudioValueRange));
for (i = 0; i < propertySize / sizeof (AudioValueRange); i++) {
g_print ("Range from %f to %f\n", rates[i].mMinimum, rates[i].mMaximum);
}
return caps;
}
/* GstBaseAudioSink vmethod implementations */
static GstRingBuffer *
gst_osx_audio_sink_create_ringbuffer (GstBaseAudioSink * sink)
{
GstOsxAudioSink *osxsink;
osxsink = GST_OSX_AUDIO_SINK (sink);
if (!osxsink->ringbuffer) {
GST_DEBUG ("Creating ringbuffer\n");
osxsink->ringbuffer = g_object_new (GST_TYPE_OSX_RING_BUFFER, NULL);
GST_DEBUG ("osx sink 0x%x element 0x%x ioproc 0x%x\n", osxsink,
GST_OSX_AUDIO_ELEMENT_GET_INTERFACE (osxsink),
(void *) gst_osx_audio_sink_io_proc);
osxsink->ringbuffer->element =
GST_OSX_AUDIO_ELEMENT_GET_INTERFACE (osxsink);
}
return GST_RING_BUFFER (osxsink->ringbuffer);
}
OSStatus
gst_osx_audio_sink_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);
guint8 *readptr;
gint readseg;
gint len;
if (gst_ring_buffer_prepare_read (GST_RING_BUFFER (buf), &readseg, &readptr,
&len)) {
outOutputData->mBuffers[0].mDataByteSize = len;
memcpy ((char *) outOutputData->mBuffers[0].mData, readptr, len);
/* clear written samples */
gst_ring_buffer_clear (GST_RING_BUFFER (buf), readseg);
/* we wrote one segment */
gst_ring_buffer_advance (GST_RING_BUFFER (buf), 1);
}
return 0;
}
static void
gst_osx_audio_sink_osxelement_init (gpointer g_iface, gpointer iface_data)
{
GstOsxAudioElementInterface *iface = (GstOsxAudioElementInterface *) g_iface;
iface->io_proc = gst_osx_audio_sink_io_proc;
}
/* entry point to initialize the plug-in
* initialize the plug-in itself
* register the element factories and pad templates
* register the features
*
* exchange the string 'plugin' with your elemnt name
*/
static gboolean
plugin_init (GstPlugin * plugin)
{
return gst_element_register (plugin, "osxaudiosink",
GST_RANK_NONE, GST_TYPE_OSX_AUDIO_SINK);
}
/* this is the structure that gstreamer looks for to register plugins
*
* exchange the strings 'plugin' and 'Template plugin' with you plugin name and
* description
*/
GST_PLUGIN_DEFINE (GST_VERSION_MAJOR,
GST_VERSION_MINOR,
"osxaudio",
"OSX Audio plugin",
plugin_init, VERSION, "LGPL", "GStreamer", "http://gstreamer.net/")

92
sys/osxaudio/gstosxaudiosink.h
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@ -1,8 +1,29 @@
/* 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:
*
* gstosxaudiosink.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
@ -20,62 +41,43 @@
* Boston, MA 02111-1307, USA.
*/
#ifndef __GST_OSXAUDIOSINK_H__
#define __GST_OSXAUDIOSINK_H__
#include <gst/gst.h>
#include "gstosxaudioelement.h"
#include <CoreAudio/CoreAudio.h>
#include <gst/audio/gstbaseaudiosink.h>
#include "gstosxringbuffer.h"
G_BEGIN_DECLS
#define GST_TYPE_OSXAUDIOSINK \
(gst_osxaudiosink_get_type())
#define GST_OSXAUDIOSINK(obj) \
(G_TYPE_CHECK_INSTANCE_CAST((obj),GST_TYPE_OSXAUDIOSINK,GstOsxAudioSink))
#define GST_OSXAUDIOSINK_CLASS(klass) \
(G_TYPE_CHECK_CLASS_CAST((klass),GST_TYPE_OSXAUDIOSINK,GstOsxAudioSinkClass))
#define GST_IS_OSXAUDIOSINK(obj) \
(G_TYPE_CHECK_INSTANCE_TYPE((obj),GST_TYPE_OSXAUDIOSINK))
#define GST_IS_OSXAUDIOSINK_CLASS(obj) \
(G_TYPE_CHECK_CLASS_TYPE((klass),GST_TYPE_OSXAUDIOSINK))
/* #defines don't like whitespacey bits */
#define GST_TYPE_OSX_AUDIO_SINK \
(gst_osx_audio_sink_get_type())
#define GST_OSX_AUDIO_SINK(obj) \
(G_TYPE_CHECK_INSTANCE_CAST((obj),GST_TYPE_OSX_AUDIO_SINK,GstOsxAudioSink))
#define GST_OSX_AUDIO_SINK_CLASS(klass) \
(G_TYPE_CHECK_CLASS_CAST((klass),GST_TYPE_OSX_AUDIO_SINK,GstOsxAudioSinkClass))
#define GST_IS_PLUGIN_TEMPLATE(obj) \
(G_TYPE_CHECK_INSTANCE_TYPE((obj),GST_TYPE_OSX_AUDIO_SINK))
#define GST_IS_PLUGIN_TEMPLATE_CLASS(klass) \
(G_TYPE_CHECK_CLASS_TYPE((klass),GST_TYPE_OSX_AUDIO_SINK))
typedef enum {
GST_OSXAUDIOSINK_OPEN = (GST_ELEMENT_FLAG_LAST << 0),
GST_OSXAUDIOSINK_FLAG_LAST = (GST_ELEMENT_FLAG_LAST << 2)
} GstOsxAudioSinkFlags;
typedef struct _GstOsxAudioSink GstOsxAudioSink;
typedef struct _GstOsxAudioSink GstOsxAudioSink;
typedef struct _GstOsxAudioSinkClass GstOsxAudioSinkClass;
struct _GstOsxAudioSink {
GstOsxAudioElement element;
struct _GstOsxAudioSink
{
GstBaseAudioSink sink;
GstPad *sinkpad;
/* GstClock *provided_clock;
GstClock *clock;
gboolean resync;
gboolean sync;
guint64 handled;
gboolean mute;
guint bufsize;
guint chunk_size;*/
GstOsxRingBuffer *ringbuffer;
};
struct _GstOsxAudioSinkClass {
GstOsxAudioElementClass parent_class;
/* signals */
void (*handoff) (GstElement *element,GstPad *pad);
struct _GstOsxAudioSinkClass
{
GstBaseAudioSinkClass parent_class;
};
GType gst_osxaudiosink_get_type(void);
GType gst_osx_audio_sink_get_type (void);
G_END_DECLS