--- a/gst_plugins_base/ext/alsa/gstalsamixerelement.c Wed Mar 31 22:03:18 2010 +0300
+++ /dev/null Thu Jan 01 00:00:00 1970 +0000
@@ -1,248 +0,0 @@
-/* ALSA mixer implementation.
- * Copyright (C) 2003 Leif Johnson <leif@ambient.2y.net>
- *
- * 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 "gstalsamixerelement.h"
-#include "gstalsadeviceprobe.h"
-
-#define DEFAULT_PROP_DEVICE "default"
-#define DEFAULT_PROP_DEVICE_NAME ""
-
-enum
-{
- PROP_0,
- PROP_DEVICE,
- PROP_DEVICE_NAME
-};
-
-static const GstElementDetails gst_alsa_mixer_element_details =
-GST_ELEMENT_DETAILS ("Alsa mixer",
- "Generic/Audio",
- "Control sound input and output levels with ALSA",
- "Leif Johnson <leif@ambient.2y.net>");
-
-static void gst_alsa_mixer_element_init_interfaces (GType type);
-
-GST_BOILERPLATE_FULL (GstAlsaMixerElement, gst_alsa_mixer_element,
- GstElement, GST_TYPE_ELEMENT, gst_alsa_mixer_element_init_interfaces);
-
-/* massive macro that takes care of all the GstMixer stuff */
-GST_IMPLEMENT_ALSA_MIXER_METHODS (GstAlsaMixerElement, gst_alsa_mixer_element);
-
-static void gst_alsa_mixer_element_get_property (GObject * object,
- guint prop_id, GValue * value, GParamSpec * pspec);
-static void gst_alsa_mixer_element_set_property (GObject * object,
- guint prop_id, const GValue * value, GParamSpec * pspec);
-static void gst_alsa_mixer_element_finalize (GObject * object);
-
-static GstStateChangeReturn gst_alsa_mixer_element_change_state (GstElement
- * element, GstStateChange transition);
-
-static gboolean
-gst_alsa_mixer_element_interface_supported (GstAlsaMixerElement * this,
- GType interface_type)
-{
- if (interface_type == GST_TYPE_MIXER) {
- return gst_alsa_mixer_element_supported (this, interface_type);
- }
-
- g_return_val_if_reached (FALSE);
-}
-
-static void
-gst_implements_interface_init (GstImplementsInterfaceClass * klass)
-{
- klass->supported = (gpointer) gst_alsa_mixer_element_interface_supported;
-}
-
-static void
-gst_alsa_mixer_element_init_interfaces (GType type)
-{
- static const GInterfaceInfo implements_iface_info = {
- (GInterfaceInitFunc) gst_implements_interface_init,
- NULL,
- NULL,
- };
- static const GInterfaceInfo mixer_iface_info = {
- (GInterfaceInitFunc) gst_alsa_mixer_element_interface_init,
- NULL,
- NULL,
- };
-
- g_type_add_interface_static (type, GST_TYPE_IMPLEMENTS_INTERFACE,
- &implements_iface_info);
- g_type_add_interface_static (type, GST_TYPE_MIXER, &mixer_iface_info);
-
- gst_alsa_type_add_device_property_probe_interface (type);
-}
-
-static void
-gst_alsa_mixer_element_base_init (gpointer klass)
-{
- gst_element_class_set_details (GST_ELEMENT_CLASS (klass),
- &gst_alsa_mixer_element_details);
-}
-
-static void
-gst_alsa_mixer_element_class_init (GstAlsaMixerElementClass * klass)
-{
- GstElementClass *element_class;
- GObjectClass *gobject_class;
-
- element_class = (GstElementClass *) klass;
- gobject_class = (GObjectClass *) klass;
-
- gobject_class->finalize = gst_alsa_mixer_element_finalize;
- gobject_class->get_property = gst_alsa_mixer_element_get_property;
- gobject_class->set_property = gst_alsa_mixer_element_set_property;
-
- g_object_class_install_property (gobject_class, PROP_DEVICE,
- g_param_spec_string ("device", "Device",
- "ALSA device, as defined in an asound configuration file",
- DEFAULT_PROP_DEVICE, G_PARAM_READWRITE));
-
- g_object_class_install_property (gobject_class, PROP_DEVICE_NAME,
- g_param_spec_string ("device-name", "Device name",
- "Human-readable name of the sound device",
- DEFAULT_PROP_DEVICE_NAME, G_PARAM_READABLE));
-
- element_class->change_state =
- GST_DEBUG_FUNCPTR (gst_alsa_mixer_element_change_state);
-}
-
-static void
-gst_alsa_mixer_element_finalize (GObject * obj)
-{
- GstAlsaMixerElement *this = GST_ALSA_MIXER_ELEMENT (obj);
-
- g_free (this->device);
-
- G_OBJECT_CLASS (parent_class)->finalize (obj);
-}
-
-static void
-gst_alsa_mixer_element_init (GstAlsaMixerElement * this,
- GstAlsaMixerElementClass * klass)
-{
- this->mixer = NULL;
- this->device = g_strdup (DEFAULT_PROP_DEVICE);
-}
-
-static void
-gst_alsa_mixer_element_set_property (GObject * object, guint prop_id,
- const GValue * value, GParamSpec * pspec)
-{
- GstAlsaMixerElement *this = GST_ALSA_MIXER_ELEMENT (object);
-
- switch (prop_id) {
- case PROP_DEVICE:{
- GST_OBJECT_LOCK (this);
- g_free (this->device);
- this->device = g_value_dup_string (value);
- /* make sure we never set NULL, this is nice when we want to open the
- * device. */
- if (this->device == NULL)
- this->device = g_strdup (DEFAULT_PROP_DEVICE);
- GST_OBJECT_UNLOCK (this);
- break;
- }
- default:
- G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
- break;
- }
-}
-
-static void
-gst_alsa_mixer_element_get_property (GObject * object, guint prop_id,
- GValue * value, GParamSpec * pspec)
-{
- GstAlsaMixerElement *this = GST_ALSA_MIXER_ELEMENT (object);
-
- switch (prop_id) {
- case PROP_DEVICE:{
- GST_OBJECT_LOCK (this);
- g_value_set_string (value, this->device);
- GST_OBJECT_UNLOCK (this);
- break;
- }
- case PROP_DEVICE_NAME:{
- GST_OBJECT_LOCK (this);
- if (this->mixer) {
- g_value_set_string (value, this->mixer->cardname);
- } else {
- g_value_set_string (value, NULL);
- }
- GST_OBJECT_UNLOCK (this);
- break;
- }
- default:
- G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
- break;
- }
-}
-
-static GstStateChangeReturn
-gst_alsa_mixer_element_change_state (GstElement * element,
- GstStateChange transition)
-{
- GstStateChangeReturn ret = GST_STATE_CHANGE_SUCCESS;
- GstAlsaMixerElement *this = GST_ALSA_MIXER_ELEMENT (element);
-
- switch (transition) {
- case GST_STATE_CHANGE_NULL_TO_READY:
- if (!this->mixer) {
- this->mixer = gst_alsa_mixer_new (this->device, GST_ALSA_MIXER_ALL);
- if (!this->mixer)
- goto open_failed;
- _gst_alsa_mixer_set_interface (this->mixer, GST_MIXER (element));
- }
- break;
- default:
- break;
- }
-
- ret = GST_ELEMENT_CLASS (parent_class)->change_state (element, transition);
- if (ret == GST_STATE_CHANGE_FAILURE)
- return ret;
-
- switch (transition) {
- case GST_STATE_CHANGE_READY_TO_NULL:
- if (this->mixer) {
- gst_alsa_mixer_free (this->mixer);
- this->mixer = NULL;
- }
- break;
- default:
- break;
- }
-
- return ret;
-
- /* ERRORS */
-open_failed:
- {
- GST_ELEMENT_ERROR (element, RESOURCE, OPEN_READ_WRITE, (NULL),
- ("Failed to open alsa mixer device '%s'", this->device));
- return GST_STATE_CHANGE_FAILURE;
- }
-}