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690 lines
19 KiB
C
690 lines
19 KiB
C
/* GStreamer
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* Copyright (C) 2012 Olivier Crete <olivier.crete@collabora.com>
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*
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* pulsedeviceprovider.c: pulseaudio device probing and monitoring
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Library General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Library General Public License for more details.
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*
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* You should have received a copy of the GNU Library General Public
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* License along with this library; if not, write to the
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* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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* Boston, MA 02111-1307, USA.
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*/
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#ifdef HAVE_CONFIG_H
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#include "config.h"
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#endif
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#include "pulsedeviceprovider.h"
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#include <string.h>
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#include <gst/gst.h>
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#include "pulsesrc.h"
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#include "pulsesink.h"
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#include "pulseutil.h"
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GST_DEBUG_CATEGORY_EXTERN (pulse_debug);
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#define GST_CAT_DEFAULT pulse_debug
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static GstDevice *gst_pulse_device_new (guint id,
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const gchar * device_name, GstCaps * caps, const gchar * internal_name,
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GstPulseDeviceType type, GstStructure * properties);
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G_DEFINE_TYPE (GstPulseDeviceProvider, gst_pulse_device_provider,
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GST_TYPE_DEVICE_PROVIDER);
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static void gst_pulse_device_provider_finalize (GObject * object);
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static void gst_pulse_device_provider_set_property (GObject * object,
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guint prop_id, const GValue * value, GParamSpec * pspec);
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static void gst_pulse_device_provider_get_property (GObject * object,
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guint prop_id, GValue * value, GParamSpec * pspec);
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static GList *gst_pulse_device_provider_probe (GstDeviceProvider * provider);
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static gboolean gst_pulse_device_provider_start (GstDeviceProvider * provider);
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static void gst_pulse_device_provider_stop (GstDeviceProvider * provider);
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enum
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{
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PROP_0,
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PROP_SERVER,
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PROP_CLIENT_NAME,
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PROP_LAST
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};
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static void
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gst_pulse_device_provider_class_init (GstPulseDeviceProviderClass * klass)
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{
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GObjectClass *gobject_class = G_OBJECT_CLASS (klass);
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GstDeviceProviderClass *dm_class = GST_DEVICE_PROVIDER_CLASS (klass);
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gchar *client_name;
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gobject_class->set_property = gst_pulse_device_provider_set_property;
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gobject_class->get_property = gst_pulse_device_provider_get_property;
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gobject_class->finalize = gst_pulse_device_provider_finalize;
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dm_class->probe = gst_pulse_device_provider_probe;
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dm_class->start = gst_pulse_device_provider_start;
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dm_class->stop = gst_pulse_device_provider_stop;
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g_object_class_install_property (gobject_class,
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PROP_SERVER,
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g_param_spec_string ("server", "Server",
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"The PulseAudio server to connect to", NULL,
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G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
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client_name = gst_pulse_client_name ();
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g_object_class_install_property (gobject_class,
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PROP_CLIENT_NAME,
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g_param_spec_string ("client-name", "Client Name",
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"The PulseAudio client_name_to_use", client_name,
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G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS |
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GST_PARAM_MUTABLE_READY));
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g_free (client_name);
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gst_device_provider_class_set_static_metadata (dm_class,
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"PulseAudio Device Provider", "Sink/Source/Audio",
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"List and provider PulseAudio source and sink devices",
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"Olivier Crete <olivier.crete@collabora.com>");
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}
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static void
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gst_pulse_device_provider_init (GstPulseDeviceProvider * self)
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{
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self->client_name = gst_pulse_client_name ();
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}
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static void
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gst_pulse_device_provider_finalize (GObject * object)
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{
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GstPulseDeviceProvider *self = GST_PULSE_DEVICE_PROVIDER (object);
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g_free (self->client_name);
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g_free (self->server);
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G_OBJECT_CLASS (gst_pulse_device_provider_parent_class)->finalize (object);
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}
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static void
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gst_pulse_device_provider_set_property (GObject * object,
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guint prop_id, const GValue * value, GParamSpec * pspec)
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{
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GstPulseDeviceProvider *self = GST_PULSE_DEVICE_PROVIDER (object);
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switch (prop_id) {
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case PROP_SERVER:
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g_free (self->server);
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self->server = g_value_dup_string (value);
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break;
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case PROP_CLIENT_NAME:
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g_free (self->client_name);
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if (!g_value_get_string (value)) {
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GST_WARNING_OBJECT (self,
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"Empty PulseAudio client name not allowed. "
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"Resetting to default value");
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self->client_name = gst_pulse_client_name ();
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} else
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self->client_name = g_value_dup_string (value);
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break;
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default:
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G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
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break;
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}
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}
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static void
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gst_pulse_device_provider_get_property (GObject * object,
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guint prop_id, GValue * value, GParamSpec * pspec)
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{
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GstPulseDeviceProvider *self = GST_PULSE_DEVICE_PROVIDER (object);
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switch (prop_id) {
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case PROP_SERVER:
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g_value_set_string (value, self->server);
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break;
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case PROP_CLIENT_NAME:
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g_value_set_string (value, self->client_name);
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break;
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default:
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G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
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break;
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}
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}
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static void
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context_state_cb (pa_context * c, void *userdata)
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{
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GstPulseDeviceProvider *self = userdata;
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switch (pa_context_get_state (c)) {
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case PA_CONTEXT_READY:
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case PA_CONTEXT_TERMINATED:
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case PA_CONTEXT_FAILED:
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pa_threaded_mainloop_signal (self->mainloop, 0);
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break;
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case PA_CONTEXT_UNCONNECTED:
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case PA_CONTEXT_CONNECTING:
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case PA_CONTEXT_AUTHORIZING:
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case PA_CONTEXT_SETTING_NAME:
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break;
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}
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}
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static GstDevice *
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new_source (const pa_source_info * info)
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{
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GstCaps *caps;
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GstStructure *props;
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guint i;
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caps = gst_caps_new_empty ();
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for (i = 0; i < info->n_formats; i++)
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gst_caps_append (caps, gst_pulse_format_info_to_caps (info->formats[i]));
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props = gst_pulse_make_structure (info->proplist);
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return gst_pulse_device_new (info->index, info->description,
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caps, info->name, GST_PULSE_DEVICE_TYPE_SOURCE, props);
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}
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static GstDevice *
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new_sink (const pa_sink_info * info)
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{
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GstCaps *caps;
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GstStructure *props;
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guint i;
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caps = gst_caps_new_empty ();
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for (i = 0; i < info->n_formats; i++)
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gst_caps_append (caps, gst_pulse_format_info_to_caps (info->formats[i]));
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props = gst_pulse_make_structure (info->proplist);
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return gst_pulse_device_new (info->index, info->description,
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caps, info->name, GST_PULSE_DEVICE_TYPE_SINK, props);
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}
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static void
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get_source_info_cb (pa_context * context,
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const pa_source_info * info, int eol, void *userdata)
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{
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GstPulseDeviceProvider *self = userdata;
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GstDevice *dev;
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if (eol) {
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pa_threaded_mainloop_signal (self->mainloop, 0);
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return;
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}
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dev = new_source (info);
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if (dev)
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gst_device_provider_device_add (GST_DEVICE_PROVIDER (self), dev);
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}
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static void
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get_sink_info_cb (pa_context * context,
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const pa_sink_info * info, int eol, void *userdata)
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{
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GstPulseDeviceProvider *self = userdata;
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GstDevice *dev;
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if (eol) {
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pa_threaded_mainloop_signal (self->mainloop, 0);
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return;
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}
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dev = new_sink (info);
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if (dev)
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gst_device_provider_device_add (GST_DEVICE_PROVIDER (self), dev);
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}
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static void
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context_subscribe_cb (pa_context * context, pa_subscription_event_type_t type,
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uint32_t idx, void *userdata)
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{
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GstPulseDeviceProvider *self = userdata;
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GstDeviceProvider *provider = userdata;
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pa_subscription_event_type_t facility =
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type & PA_SUBSCRIPTION_EVENT_FACILITY_MASK;
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pa_subscription_event_type_t event_type =
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type & PA_SUBSCRIPTION_EVENT_TYPE_MASK;
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if (facility != PA_SUBSCRIPTION_EVENT_SOURCE &&
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facility != PA_SUBSCRIPTION_EVENT_SINK)
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return;
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if (event_type == PA_SUBSCRIPTION_EVENT_NEW) {
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/* Microphone in the source output has changed */
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if (facility == PA_SUBSCRIPTION_EVENT_SOURCE)
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pa_context_get_source_info_by_index (context, idx, get_source_info_cb,
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self);
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else if (facility == PA_SUBSCRIPTION_EVENT_SINK)
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pa_context_get_sink_info_by_index (context, idx, get_sink_info_cb, self);
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} else if (event_type == PA_SUBSCRIPTION_EVENT_REMOVE) {
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GstPulseDevice *dev = NULL;
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GList *item;
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GST_OBJECT_LOCK (self);
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for (item = provider->devices; item; item = item->next) {
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dev = item->data;
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if (((facility == PA_SUBSCRIPTION_EVENT_SOURCE &&
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dev->type == GST_PULSE_DEVICE_TYPE_SOURCE) ||
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(facility == PA_SUBSCRIPTION_EVENT_SINK &&
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dev->type == GST_PULSE_DEVICE_TYPE_SINK)) &&
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dev->device_index == idx) {
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gst_object_ref (dev);
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break;
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}
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dev = NULL;
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}
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GST_OBJECT_UNLOCK (self);
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if (dev) {
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gst_device_provider_device_remove (GST_DEVICE_PROVIDER (self),
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GST_DEVICE (dev));
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gst_object_unref (dev);
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}
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}
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}
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static void
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get_source_info_list_cb (pa_context * context, const pa_source_info * info,
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int eol, void *userdata)
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{
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GList **devices = userdata;
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if (eol)
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return;
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*devices = g_list_prepend (*devices, gst_object_ref_sink (new_source (info)));
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}
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static void
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get_sink_info_list_cb (pa_context * context, const pa_sink_info * info,
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int eol, void *userdata)
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{
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GList **devices = userdata;
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if (eol)
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return;
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*devices = g_list_prepend (*devices, gst_object_ref_sink (new_sink (info)));
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}
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static GList *
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gst_pulse_device_provider_probe (GstDeviceProvider * provider)
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{
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GstPulseDeviceProvider *self = GST_PULSE_DEVICE_PROVIDER (provider);
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GList *devices = NULL;
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pa_mainloop *m = NULL;
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pa_context *c = NULL;
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pa_operation *o;
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if (!(m = pa_mainloop_new ()))
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return NULL;
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if (!(c = pa_context_new (pa_mainloop_get_api (m), self->client_name))) {
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GST_ERROR_OBJECT (self, "Failed to create context");
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goto failed;
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}
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if (pa_context_connect (c, self->server, 0, NULL) < 0) {
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GST_ERROR_OBJECT (self, "Failed to connect: %s",
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pa_strerror (pa_context_errno (self->context)));
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goto failed;
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}
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for (;;) {
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pa_context_state_t state;
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state = pa_context_get_state (c);
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if (!PA_CONTEXT_IS_GOOD (state)) {
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GST_ELEMENT_ERROR (self, RESOURCE, FAILED, ("Failed to connect: %s",
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pa_strerror (pa_context_errno (c))), (NULL));
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goto failed;
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}
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if (state == PA_CONTEXT_READY)
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break;
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/* Wait until the context is ready */
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if (pa_mainloop_iterate (m, TRUE, NULL) < 0)
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goto failed;
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}
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GST_DEBUG_OBJECT (self, "connected");
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o = pa_context_get_sink_info_list (c, get_sink_info_list_cb, &devices);
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while (pa_operation_get_state (o) == PA_OPERATION_RUNNING &&
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pa_operation_get_state (o) == PA_OPERATION_RUNNING) {
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if (pa_mainloop_iterate (m, TRUE, NULL) < 0)
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break;
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}
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pa_operation_unref (o);
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o = pa_context_get_source_info_list (c, get_source_info_list_cb, &devices);
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while (pa_operation_get_state (o) == PA_OPERATION_RUNNING &&
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pa_operation_get_state (o) == PA_OPERATION_RUNNING) {
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if (pa_mainloop_iterate (m, TRUE, NULL) < 0)
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break;
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}
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pa_operation_unref (o);
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pa_context_disconnect (c);
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pa_mainloop_free (m);
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return devices;
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failed:
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return NULL;
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}
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static gboolean
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gst_pulse_device_provider_start (GstDeviceProvider * provider)
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{
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GstPulseDeviceProvider *self = GST_PULSE_DEVICE_PROVIDER (provider);
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pa_operation *initial_operation;
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if (!(self->mainloop = pa_threaded_mainloop_new ())) {
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GST_ERROR_OBJECT (self, "Could not create pulseaudio mainloop");
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goto mainloop_failed;
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}
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if (pa_threaded_mainloop_start (self->mainloop) < 0) {
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GST_ERROR_OBJECT (self, "Could not start pulseaudio mainloop");
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pa_threaded_mainloop_free (self->mainloop);
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self->mainloop = NULL;
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goto mainloop_failed;
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}
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pa_threaded_mainloop_lock (self->mainloop);
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if (!(self->context =
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pa_context_new (pa_threaded_mainloop_get_api (self->mainloop),
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self->client_name))) {
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GST_ERROR_OBJECT (self, "Failed to create context");
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goto unlock_and_fail;
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}
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pa_context_set_state_callback (self->context, context_state_cb, self);
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pa_context_set_subscribe_callback (self->context, context_subscribe_cb, self);
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GST_DEBUG_OBJECT (self, "connect to server %s", GST_STR_NULL (self->server));
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if (pa_context_connect (self->context, self->server, 0, NULL) < 0) {
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GST_ERROR_OBJECT (self, "Failed to connect: %s",
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pa_strerror (pa_context_errno (self->context)));
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goto unlock_and_fail;
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}
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for (;;) {
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pa_context_state_t state;
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state = pa_context_get_state (self->context);
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if (!PA_CONTEXT_IS_GOOD (state)) {
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GST_ERROR_OBJECT (self, "Failed to connect: %s",
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pa_strerror (pa_context_errno (self->context)));
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goto unlock_and_fail;
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}
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if (state == PA_CONTEXT_READY)
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break;
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/* Wait until the context is ready */
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pa_threaded_mainloop_wait (self->mainloop);
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}
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GST_DEBUG_OBJECT (self, "connected");
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pa_context_subscribe (self->context,
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PA_SUBSCRIPTION_MASK_SOURCE | PA_SUBSCRIPTION_MASK_SINK, NULL, NULL);
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initial_operation = pa_context_get_source_info_list (self->context,
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get_source_info_cb, self);
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while (pa_operation_get_state (initial_operation) == PA_OPERATION_RUNNING) {
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if (!PA_CONTEXT_IS_GOOD (pa_context_get_state ((self->context))))
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goto cancel_and_fail;
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pa_threaded_mainloop_wait (self->mainloop);
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}
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pa_operation_unref (initial_operation);
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initial_operation = pa_context_get_sink_info_list (self->context,
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get_sink_info_cb, self);
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if (!initial_operation)
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goto unlock_and_fail;
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while (pa_operation_get_state (initial_operation) == PA_OPERATION_RUNNING) {
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if (!PA_CONTEXT_IS_GOOD (pa_context_get_state ((self->context))))
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goto cancel_and_fail;
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pa_threaded_mainloop_wait (self->mainloop);
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}
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pa_operation_unref (initial_operation);
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pa_threaded_mainloop_unlock (self->mainloop);
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return TRUE;
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unlock_and_fail:
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pa_threaded_mainloop_unlock (self->mainloop);
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gst_pulse_device_provider_stop (provider);
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return FALSE;
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mainloop_failed:
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return FALSE;
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cancel_and_fail:
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pa_operation_cancel (initial_operation);
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pa_operation_unref (initial_operation);
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goto unlock_and_fail;
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}
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static void
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gst_pulse_device_provider_stop (GstDeviceProvider * provider)
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{
|
|
GstPulseDeviceProvider *self = GST_PULSE_DEVICE_PROVIDER (provider);
|
|
|
|
pa_threaded_mainloop_stop (self->mainloop);
|
|
|
|
if (self->context) {
|
|
pa_context_disconnect (self->context);
|
|
|
|
/* Make sure we don't get any further callbacks */
|
|
pa_context_set_state_callback (self->context, NULL, NULL);
|
|
pa_context_set_subscribe_callback (self->context, NULL, NULL);
|
|
|
|
pa_context_unref (self->context);
|
|
self->context = NULL;
|
|
}
|
|
|
|
pa_threaded_mainloop_free (self->mainloop);
|
|
self->mainloop = NULL;
|
|
}
|
|
|
|
enum
|
|
{
|
|
PROP_INTERNAL_NAME = 1,
|
|
};
|
|
|
|
G_DEFINE_TYPE (GstPulseDevice, gst_pulse_device, GST_TYPE_DEVICE);
|
|
|
|
static void gst_pulse_device_get_property (GObject * object, guint prop_id,
|
|
GValue * value, GParamSpec * pspec);
|
|
static void gst_pulse_device_set_property (GObject * object, guint prop_id,
|
|
const GValue * value, GParamSpec * pspec);
|
|
static void gst_pulse_device_finalize (GObject * object);
|
|
static GstElement *gst_pulse_device_create_element (GstDevice * device,
|
|
const gchar * name);
|
|
static gboolean gst_pulse_device_reconfigure_element (GstDevice * device,
|
|
GstElement * element);
|
|
|
|
static void
|
|
gst_pulse_device_class_init (GstPulseDeviceClass * klass)
|
|
{
|
|
GstDeviceClass *dev_class = GST_DEVICE_CLASS (klass);
|
|
GObjectClass *object_class = G_OBJECT_CLASS (klass);
|
|
|
|
dev_class->create_element = gst_pulse_device_create_element;
|
|
dev_class->reconfigure_element = gst_pulse_device_reconfigure_element;
|
|
|
|
object_class->get_property = gst_pulse_device_get_property;
|
|
object_class->set_property = gst_pulse_device_set_property;
|
|
object_class->finalize = gst_pulse_device_finalize;
|
|
|
|
g_object_class_install_property (object_class, PROP_INTERNAL_NAME,
|
|
g_param_spec_string ("internal-name", "Internal PulseAudio device name",
|
|
"The internal name of the PulseAudio device", "",
|
|
G_PARAM_STATIC_STRINGS | G_PARAM_READWRITE | G_PARAM_CONSTRUCT_ONLY));
|
|
}
|
|
|
|
static void
|
|
gst_pulse_device_init (GstPulseDevice * device)
|
|
{
|
|
}
|
|
|
|
static void
|
|
gst_pulse_device_finalize (GObject * object)
|
|
{
|
|
GstPulseDevice *device = GST_PULSE_DEVICE (object);
|
|
|
|
g_free (device->internal_name);
|
|
|
|
G_OBJECT_CLASS (gst_pulse_device_parent_class)->finalize (object);
|
|
}
|
|
|
|
static GstElement *
|
|
gst_pulse_device_create_element (GstDevice * device, const gchar * name)
|
|
{
|
|
GstPulseDevice *pulse_dev = GST_PULSE_DEVICE (device);
|
|
GstElement *elem;
|
|
|
|
elem = gst_element_factory_make (pulse_dev->element, name);
|
|
g_object_set (elem, "device", pulse_dev->internal_name, NULL);
|
|
|
|
return elem;
|
|
}
|
|
|
|
static gboolean
|
|
gst_pulse_device_reconfigure_element (GstDevice * device, GstElement * element)
|
|
{
|
|
GstPulseDevice *pulse_dev = GST_PULSE_DEVICE (device);
|
|
|
|
if (!strcmp (pulse_dev->element, "pulsesrc")) {
|
|
if (!GST_IS_PULSESRC (element))
|
|
return FALSE;
|
|
} else if (!strcmp (pulse_dev->element, "pulsesink")) {
|
|
if (!GST_IS_PULSESINK (element))
|
|
return FALSE;
|
|
} else {
|
|
g_assert_not_reached ();
|
|
}
|
|
|
|
g_object_set (element, "device", pulse_dev->internal_name, NULL);
|
|
|
|
return TRUE;
|
|
}
|
|
|
|
/* Takes ownership of @caps and @props */
|
|
static GstDevice *
|
|
gst_pulse_device_new (guint device_index, const gchar * device_name,
|
|
GstCaps * caps, const gchar * internal_name, GstPulseDeviceType type,
|
|
GstStructure * props)
|
|
{
|
|
GstPulseDevice *gstdev;
|
|
const gchar *element = NULL;
|
|
const gchar *klass = NULL;
|
|
|
|
g_return_val_if_fail (device_name, NULL);
|
|
g_return_val_if_fail (internal_name, NULL);
|
|
g_return_val_if_fail (caps, NULL);
|
|
|
|
|
|
switch (type) {
|
|
case GST_PULSE_DEVICE_TYPE_SOURCE:
|
|
element = "pulsesrc";
|
|
klass = "Audio/Source";
|
|
break;
|
|
case GST_PULSE_DEVICE_TYPE_SINK:
|
|
element = "pulsesink";
|
|
klass = "Audio/Sink";
|
|
break;
|
|
default:
|
|
g_assert_not_reached ();
|
|
break;
|
|
}
|
|
|
|
|
|
gstdev = g_object_new (GST_TYPE_PULSE_DEVICE,
|
|
"display-name", device_name, "caps", caps, "device-class", klass,
|
|
"internal-name", internal_name, "properties", props, NULL);
|
|
|
|
gstdev->type = type;
|
|
gstdev->device_index = device_index;
|
|
gstdev->element = element;
|
|
|
|
gst_structure_free (props);
|
|
gst_caps_unref (caps);
|
|
|
|
return GST_DEVICE (gstdev);
|
|
}
|
|
|
|
|
|
static void
|
|
gst_pulse_device_get_property (GObject * object, guint prop_id,
|
|
GValue * value, GParamSpec * pspec)
|
|
{
|
|
GstPulseDevice *device;
|
|
|
|
device = GST_PULSE_DEVICE_CAST (object);
|
|
|
|
switch (prop_id) {
|
|
case PROP_INTERNAL_NAME:
|
|
g_value_set_string (value, device->internal_name);
|
|
break;
|
|
default:
|
|
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
|
|
break;
|
|
}
|
|
}
|
|
|
|
|
|
static void
|
|
gst_pulse_device_set_property (GObject * object, guint prop_id,
|
|
const GValue * value, GParamSpec * pspec)
|
|
{
|
|
GstPulseDevice *device;
|
|
|
|
device = GST_PULSE_DEVICE_CAST (object);
|
|
|
|
switch (prop_id) {
|
|
case PROP_INTERNAL_NAME:
|
|
device->internal_name = g_value_dup_string (value);
|
|
break;
|
|
default:
|
|
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
|
|
break;
|
|
}
|
|
}
|