gstreamer/sys/sunaudio/gstsunelement.c

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/*
* GStreamer
* Copyright (C) 1999-2001 Erik Walthinsen <omega@cse.ogi.edu>
* Copyright (C) 2004 David A. Schleef <ds@schleef.org>
*
* 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.
*/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include <sys/types.h>
#include <sys/stat.h>
#include <sys/ioctl.h>
#include <fcntl.h>
#include <unistd.h>
#include <errno.h>
#include <string.h>
#include "gstsunelement.h"
#include "gstsunmixer.h"
#include <gst/propertyprobe/propertyprobe.h>
enum
{
ARG_0,
ARG_DEVICE,
ARG_MIXERDEV,
ARG_DEVICE_NAME,
};
/* elementfactory information */
static GstElementDetails gst_sunaudioelement_details =
GST_ELEMENT_DETAILS ("SunAudioMixer",
"Generic/Audio",
"Audio mixer for Sun Audio devices",
"Balamurali Viswanathan <balamurali.viswanathan@wipro.com>");
static void gst_sunaudioelement_base_init (GstSunAudioElementClass * klass);
static void gst_sunaudioelement_class_init (GstSunAudioElementClass * klass);
static void gst_sunaudioprobe_interface_init (GstPropertyProbeInterface *
iface);
static void gst_sunaudioelement_init (GstSunAudioElement * sunaudio);
static void gst_sunaudioelement_dispose (GObject * object);
static void gst_sunaudioelement_set_property (GObject * object,
guint prop_id, const GValue * value, GParamSpec * pspec);
static void gst_sunaudioelement_get_property (GObject * object,
guint prop_id, GValue * value, GParamSpec * pspec);
static GstElementStateReturn gst_sunaudioelement_change_state (GstElement *
element);
static GstElementClass *parent_class = NULL;
static gboolean gst_sunaudioelement_open_audio (GstSunAudioElement * sunaudio);
static gboolean gst_sunaudioelement_close_audio (GstSunAudioElement * sunaudio);
void gst_sunaudioelement_reset (GstSunAudioElement * sunaudio);
GType
gst_sunaudioelement_get_type (void)
{
static GType sunaudioelement_type = 0;
if (!sunaudioelement_type) {
static const GTypeInfo sunaudioelement_info = {
sizeof (GstSunAudioElementClass),
(GBaseInitFunc) gst_sunaudioelement_base_init,
NULL,
(GClassInitFunc) gst_sunaudioelement_class_init,
NULL,
NULL,
sizeof (GstSunAudioElement),
0,
(GInstanceInitFunc) gst_sunaudioelement_init
};
static const GInterfaceInfo sunaudioiface_info = {
(GInterfaceInitFunc) gst_sunaudio_interface_init,
NULL,
NULL
};
static const GInterfaceInfo sunaudiomixer_info = {
(GInterfaceInitFunc) gst_sunaudiomixer_interface_init,
NULL,
NULL
};
static const GInterfaceInfo sunaudioprobe_info = {
(GInterfaceInitFunc) gst_sunaudioprobe_interface_init,
NULL,
NULL
};
sunaudioelement_type = g_type_register_static (GST_TYPE_ELEMENT,
"GstSunAudioElement", &sunaudioelement_info, 0);
g_type_add_interface_static (sunaudioelement_type,
GST_TYPE_IMPLEMENTS_INTERFACE, &sunaudioiface_info);
g_type_add_interface_static (sunaudioelement_type,
GST_TYPE_MIXER, &sunaudiomixer_info);
g_type_add_interface_static (sunaudioelement_type,
GST_TYPE_PROPERTY_PROBE, &sunaudioprobe_info);
}
return sunaudioelement_type;
}
static void
gst_sunaudioelement_base_init (GstSunAudioElementClass * klass)
{
GstElementClass *element_class = GST_ELEMENT_CLASS (klass);
klass->device_combinations = NULL;
gst_element_class_set_details (element_class, &gst_sunaudioelement_details);
}
static void
gst_sunaudioelement_class_init (GstSunAudioElementClass * klass)
{
GObjectClass *gobject_class;
GstElementClass *gstelement_class;
gobject_class = (GObjectClass *) klass;
gstelement_class = (GstElementClass *) klass;
parent_class = g_type_class_ref (GST_TYPE_ELEMENT);
g_object_class_install_property (G_OBJECT_CLASS (klass), ARG_DEVICE,
g_param_spec_string ("device", "Device",
"SunAudio device (/dev/audioctl usually)", "default",
G_PARAM_READWRITE));
g_object_class_install_property (G_OBJECT_CLASS (klass), ARG_MIXERDEV,
g_param_spec_string ("mixerdev", "Mixer device",
"SunAudio mixer device (/dev/audioctl usually)", "default",
G_PARAM_READWRITE));
g_object_class_install_property (G_OBJECT_CLASS (klass), ARG_DEVICE_NAME,
g_param_spec_string ("device_name", "Device name", "Name of the device",
NULL, G_PARAM_READABLE));
gobject_class->set_property = gst_sunaudioelement_set_property;
gobject_class->get_property = gst_sunaudioelement_get_property;
gobject_class->dispose = gst_sunaudioelement_dispose;
gstelement_class->change_state = gst_sunaudioelement_change_state;
}
static GList *
device_combination_append (GList * device_combinations,
GstSunAudioDeviceCombination * combi)
{
GList *it;
for (it = device_combinations; it != NULL; it = it->next) {
GstSunAudioDeviceCombination *cur;
cur = (GstSunAudioDeviceCombination *) it->data;
if (cur->dev == combi->dev) {
return device_combinations;
}
}
return g_list_append (device_combinations, combi);
}
static gboolean
gst_sunaudioelement_class_probe_devices (GstSunAudioElementClass * klass,
gboolean check)
{
GstElementClass *eklass = GST_ELEMENT_CLASS (klass);
gint openmode = O_RDONLY;
GList *padtempllist;
static GList *device_combinations;
static gboolean init = FALSE;
int fd;
padtempllist = gst_element_class_get_pad_template_list (eklass);
if (padtempllist != NULL) {
GstPadTemplate *firstpadtempl = padtempllist->data;
if (GST_PAD_TEMPLATE_DIRECTION (firstpadtempl) == GST_PAD_SINK) {
openmode = O_WRONLY;
}
}
if (!init && !check) {
if ((fd = open ("/dev/audioctl", openmode | O_NONBLOCK)) > 0
|| errno == EBUSY) {
GstSunAudioDeviceCombination *combi;
if (fd > 0)
close (fd);
combi = g_new0 (GstSunAudioDeviceCombination, 1);
combi->mixer = g_strdup ("/dev/audioctl");
device_combinations =
device_combination_append (device_combinations, combi);
}
init = TRUE;
}
klass->device_combinations = device_combinations;
return init;
}
static void
gst_sunaudioprobe_probe_property (GstPropertyProbe * probe,
guint prop_id, const GParamSpec * pspec)
{
GstSunAudioElementClass *klass = GST_SUNAUDIOELEMENT_GET_CLASS (probe);
switch (prop_id) {
case ARG_DEVICE:
gst_sunaudioelement_class_probe_devices (klass, FALSE);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (probe, prop_id, pspec);
break;
}
}
static gboolean
gst_sunaudioprobe_needs_probe (GstPropertyProbe * probe,
guint prop_id, const GParamSpec * pspec)
{
GstSunAudioElementClass *klass = GST_SUNAUDIOELEMENT_GET_CLASS (probe);
gboolean ret = FALSE;
switch (prop_id) {
case ARG_DEVICE:
ret = !gst_sunaudioelement_class_probe_devices (klass, TRUE);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (probe, prop_id, pspec);
break;
}
return ret;
}
static const GList *
gst_sunaudioprobe_get_properties (GstPropertyProbe * probe)
{
GObjectClass *klass = G_OBJECT_GET_CLASS (probe);
static GList *list = NULL;
if (!list) {
list = g_list_append (NULL, g_object_class_find_property (klass, "device"));
}
return list;
}
static GValueArray *
gst_sunaudioelement_class_list_devices (GstSunAudioElementClass * klass)
{
GValueArray *array;
GValue value = { 0 };
GList *item;
if (!klass->device_combinations) {
return NULL;
}
array = g_value_array_new (g_list_length (klass->device_combinations));
item = klass->device_combinations;
g_value_init (&value, G_TYPE_STRING);
while (item) {
GstSunAudioDeviceCombination *combi = item->data;
g_value_set_string (&value, combi->mixer);
g_value_array_append (array, &value);
item = item->next;
}
g_value_unset (&value);
return array;
}
static GValueArray *
gst_sunaudioprobe_get_values (GstPropertyProbe * probe,
guint prop_id, const GParamSpec * pspec)
{
GstSunAudioElementClass *klass = GST_SUNAUDIOELEMENT_GET_CLASS (probe);
GValueArray *array = NULL;
switch (prop_id) {
case ARG_DEVICE:
array = gst_sunaudioelement_class_list_devices (klass);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (probe, prop_id, pspec);
break;
}
return array;
}
static void
gst_sunaudioprobe_interface_init (GstPropertyProbeInterface * iface)
{
iface->get_properties = gst_sunaudioprobe_get_properties;
iface->probe_property = gst_sunaudioprobe_probe_property;
iface->needs_probe = gst_sunaudioprobe_needs_probe;
iface->get_values = gst_sunaudioprobe_get_values;
}
static void
gst_sunaudioelement_init (GstSunAudioElement * sunaudio)
{
sunaudio->device = g_strdup ("/dev/audio");
sunaudio->mixer_dev = g_strdup ("/dev/audioctl");
sunaudio->fd = -1;
sunaudio->mixer_fd = -1;
sunaudio->tracklist = NULL;
sunaudio->device_name = NULL;
gst_sunaudioelement_reset (sunaudio);
}
void
gst_sunaudioelement_reset (GstSunAudioElement * sunaudio)
{
return;
}
static void
gst_sunaudioelement_set_property (GObject * object,
guint prop_id, const GValue * value, GParamSpec * pspec)
{
GstSunAudioElement *sunaudio = GST_SUNAUDIOELEMENT (object);
switch (prop_id) {
case ARG_DEVICE:
if (gst_element_get_state (GST_ELEMENT (sunaudio)) == GST_STATE_NULL) {
g_free (sunaudio->device);
sunaudio->device = g_strdup (g_value_get_string (value));
if (GST_SUNAUDIOELEMENT_GET_CLASS (sunaudio)->device_combinations !=
NULL) {
GList *list =
GST_SUNAUDIOELEMENT_GET_CLASS (sunaudio)->device_combinations;
while (list) {
GstSunAudioDeviceCombination *combi = list->data;
if (!strcmp (combi->mixer, sunaudio->device)) {
g_free (sunaudio->mixer_dev);
sunaudio->mixer_dev = g_strdup (combi->mixer);
break;
}
list = list->next;
}
}
}
break;
case ARG_MIXERDEV:
if (gst_element_get_state (GST_ELEMENT (sunaudio)) == GST_STATE_NULL) {
g_free (sunaudio->mixer_dev);
sunaudio->mixer_dev = g_strdup (g_value_get_string (value));
}
break;
default:
break;
}
}
static void
gst_sunaudioelement_get_property (GObject * object,
guint prop_id, GValue * value, GParamSpec * pspec)
{
GstSunAudioElement *sunaudio = GST_SUNAUDIOELEMENT (object);
switch (prop_id) {
case ARG_DEVICE:
g_value_set_string (value, sunaudio->device);
break;
case ARG_MIXERDEV:
g_value_set_string (value, sunaudio->mixer_dev);
break;
case ARG_DEVICE_NAME:
g_value_set_string (value, sunaudio->device_name);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
}
}
static void
gst_sunaudioelement_dispose (GObject * object)
{
GstSunAudioElement *sunaudio = (GstSunAudioElement *) object;
g_free (sunaudio->device);
g_free (sunaudio->mixer_dev);
G_OBJECT_CLASS (parent_class)->dispose (object);
}
static GstElementStateReturn
gst_sunaudioelement_change_state (GstElement * element)
{
GstSunAudioElement *sunaudio = GST_SUNAUDIOELEMENT (element);
switch (GST_STATE_TRANSITION (element)) {
case GST_STATE_NULL_TO_READY:
if (!gst_sunaudioelement_open_audio (sunaudio)) {
return GST_STATE_FAILURE;
}
GST_INFO ("opened sound device");
break;
case GST_STATE_READY_TO_NULL:
gst_sunaudioelement_close_audio (sunaudio);
gst_sunaudioelement_reset (sunaudio);
GST_INFO ("closed sound device");
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 gboolean
gst_sunaudioelement_open_audio (GstSunAudioElement * sunaudio)
{
gint caps;
GstSunAudioOpenMode mode = GST_SUNAUDIOELEMENT_READ;
const GList *padlist;
g_return_val_if_fail (sunaudio->fd == -1, FALSE);
padlist = gst_element_get_pad_list (GST_ELEMENT (sunaudio));
if (padlist != NULL) {
GstPad *firstpad = padlist->data;
if (GST_PAD_IS_SINK (firstpad)) {
mode = GST_SUNAUDIOELEMENT_WRITE;
}
}
if (mode == GST_SUNAUDIOELEMENT_WRITE) {
sunaudio->fd = open (sunaudio->device, O_WRONLY | O_NONBLOCK);
if (sunaudio->fd >= 0) {
close (sunaudio->fd);
sunaudio->fd = open (sunaudio->device, O_WRONLY);
}
} else {
sunaudio->fd = open (sunaudio->device, O_RDONLY);
}
if (sunaudio->fd < 0) {
switch (errno) {
default:
printf ("could not open device\n");
}
return FALSE;
}
sunaudio->mode = mode;
gst_sunaudiomixer_build_list (sunaudio);
return TRUE;
}
static gboolean
gst_sunaudioelement_close_audio (GstSunAudioElement * sunaudio)
{
close (sunaudio->fd);
sunaudio->fd = -1;
}