/* Copyright 2011 Canonical Ltd. Authors: Conor Curran This program is free software: you can redistribute it and/or modify it under the terms of the GNU General Public License version 3, as published by the Free Software Foundation. This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranties of MERCHANTABILITY, SATISFACTORY QUALITY, or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. You should have received a copy of the GNU General Public License along with this program. If not, see . */ /**Notes * * Approach now is to set up the communication channels, query the server * fetch its default sink/source. If this fails then fetch the list of sinks/sources * and take the first one which is not the auto-null sink. * TODO: need to handle the situation where one chink in this linear chain breaks * i.e. start off the process again and count the attempts (note different to reconnect attempts) */ #include #include #include #include "pulseaudio-mgr.h" #define RECONNECT_DELAY 5 static void pm_context_state_callback(pa_context *c, void *userdata); static void pm_subscribed_events_callback (pa_context *c, enum pa_subscription_event_type t, uint32_t index, void* userdata); static void pm_server_info_callback (pa_context *c, const pa_server_info *info, void *userdata); static void pm_default_sink_info_callback (pa_context *c, const pa_sink_info *info, int eol, void *userdata); static void pm_default_source_info_callback (pa_context *c, const pa_source_info *info, int eol, void *userdata); static void pm_sink_info_callback (pa_context *c, const pa_sink_info *sink, int eol, void *userdata); static void pm_source_info_callback (pa_context *c, const pa_source_info *info, int eol, void *userdata); static void pm_update_source_info_callback (pa_context *c, const pa_source_info *info, int eol, void *userdata); static void pm_sink_input_info_callback (pa_context *c, const pa_sink_input_info *info, int eol, void *userdata); static void pm_update_active_sink (pa_context *c, const pa_sink_info *info, int eol, void *userdata); static void pm_toggle_mute_for_every_sink_callback (pa_context *c, const pa_sink_info *sink, int eol, void* userdata); static gboolean reconnect_to_pulse (gpointer user_data); static gint connection_attempts = 0; static gint reconnect_idle_id = 0; static pa_context *pulse_context = NULL; static pa_glib_mainloop *pa_main_loop = NULL; /** Entry Point **/ void pm_establish_pulse_connection (ActiveSink* active_sink) { pa_main_loop = pa_glib_mainloop_new (g_main_context_default ()); g_assert (pa_main_loop); reconnect_to_pulse ((gpointer)active_sink); } /** close_pulse_activites() Gracefully close our connection with the Pulse async library. **/ void close_pulse_activites() { if (pulse_context != NULL) { pa_context_unref(pulse_context); pulse_context = NULL; } pa_glib_mainloop_free(pa_main_loop); pa_main_loop = NULL; } /** reconnect_to_pulse (gpointer user_data) Method which connects to the pulse server and is used to track reconnects. */ static gboolean reconnect_to_pulse (gpointer user_data) { g_debug("Attempt to reconnect to pulse"); // reset connection_attempts += 1; if (pulse_context != NULL) { pa_context_unref(pulse_context); pulse_context = NULL; } pulse_context = pa_context_new( pa_glib_mainloop_get_api( pa_main_loop ), "com.canonical.indicators.sound" ); g_assert(pulse_context); pa_context_set_state_callback (pulse_context, pm_context_state_callback, user_data); int result = pa_context_connect (pulse_context, NULL, PA_CONTEXT_NOFAIL, user_data); if (result < 0) { g_warning ("Failed to connect context: %s", pa_strerror (pa_context_errno (pulse_context))); } if (connection_attempts > 5){ return FALSE; } else{ return TRUE; } } void pm_update_volume (gint sink_index, pa_cvolume new_volume) { pa_operation_unref (pa_context_set_sink_volume_by_index (pulse_context, sink_index, &new_volume, NULL, NULL) ); } void pm_update_mute (gboolean update) { pa_operation_unref (pa_context_get_sink_info_list (pulse_context, pm_toggle_mute_for_every_sink_callback, GINT_TO_POINTER (update))); } void pm_update_mic_gain (gint source_index, pa_cvolume new_gain) { pa_operation_unref (pa_context_set_source_volume_by_index (pulse_context, source_index, &new_gain, NULL, NULL) ); } void pm_update_mic_mute (gint source_index, gint mute_update) { pa_operation_unref (pa_context_set_source_mute_by_index (pulse_context, source_index, mute_update, NULL, NULL)); } /**********************************************************************************************************************/ // Pulse-Audio asychronous call-backs /**********************************************************************************************************************/ static void pm_subscribed_events_callback (pa_context *c, enum pa_subscription_event_type t, uint32_t index, void* userdata) { if (IS_ACTIVE_SINK (userdata) == FALSE){ g_critical ("subscribed events callback - our userdata is not what we think it should be"); return; } ActiveSink* sink = ACTIVE_SINK (userdata); switch (t & PA_SUBSCRIPTION_EVENT_FACILITY_MASK) { case PA_SUBSCRIPTION_EVENT_SINK: // We don't care about any other sink other than the active one. if (index != active_sink_get_index (sink)) return; if ((t & PA_SUBSCRIPTION_EVENT_TYPE_MASK) == PA_SUBSCRIPTION_EVENT_REMOVE) { active_sink_deactivate (sink); } else{ pa_operation_unref (pa_context_get_sink_info_by_index (c, index, pm_update_active_sink, userdata) ); } break; case PA_SUBSCRIPTION_EVENT_SOURCE: g_debug ("Looks like source event of some description"); // We don't care about any other sink other than the active one. if (index != active_sink_get_source_index (sink)) return; if ((t & PA_SUBSCRIPTION_EVENT_TYPE_MASK) == PA_SUBSCRIPTION_EVENT_REMOVE) { active_sink_deactivate_voip_source (sink); } else{ pa_operation_unref (pa_context_get_source_info_by_index (c, index, pm_update_source_info_callback, userdata) ); } break; case PA_SUBSCRIPTION_EVENT_SINK_INPUT: // We don't care about sink input removals. g_debug ("sink input event"); if ((t & PA_SUBSCRIPTION_EVENT_TYPE_MASK) == PA_SUBSCRIPTION_EVENT_REMOVE) { gint cached_index = active_sink_get_current_sink_input_index (sink); g_debug ("Just saw a sink input removal event - index = %i and cached index = %i", index, cached_index); if (index == cached_index){ active_sink_deactivate_voip_client (sink); } } else if ((t & PA_SUBSCRIPTION_EVENT_TYPE_MASK) == PA_SUBSCRIPTION_EVENT_NEW) { g_debug ("some new sink input event ? - index = %i", index); // Determine if its a VOIP app or a maybe blocking state. pa_operation_unref (pa_context_get_sink_input_info (c, index, pm_sink_input_info_callback, userdata)); } break; case PA_SUBSCRIPTION_EVENT_SERVER: g_debug("PA_SUBSCRIPTION_EVENT_SERVER event triggered."); pa_operation *o; if (!(o = pa_context_get_server_info (c, pm_server_info_callback, userdata))) { g_warning("subscribed_events_callback - pa_context_get_server_info() failed"); return; } pa_operation_unref(o); break; } } static void pm_context_state_callback (pa_context *c, void *userdata) { switch (pa_context_get_state(c)) { case PA_CONTEXT_UNCONNECTED: g_debug("unconnected"); break; case PA_CONTEXT_CONNECTING: g_debug("connecting - waiting for the server to become available"); break; case PA_CONTEXT_AUTHORIZING: break; case PA_CONTEXT_SETTING_NAME: break; case PA_CONTEXT_FAILED: g_warning("PA_CONTEXT_FAILED - Is PulseAudio Daemon running ?"); active_sink_deactivate (ACTIVE_SINK (userdata)); if (reconnect_idle_id == 0){ reconnect_idle_id = g_timeout_add_seconds (RECONNECT_DELAY, reconnect_to_pulse, userdata); } break; case PA_CONTEXT_TERMINATED: break; case PA_CONTEXT_READY: connection_attempts = 0; g_debug("PA_CONTEXT_READY"); if (reconnect_idle_id != 0){ g_source_remove (reconnect_idle_id); reconnect_idle_id = 0; } pa_operation *o; pa_context_set_subscribe_callback(c, pm_subscribed_events_callback, userdata); if (!(o = pa_context_subscribe (c, (pa_subscription_mask_t) (PA_SUBSCRIPTION_MASK_SINK| PA_SUBSCRIPTION_MASK_SOURCE| PA_SUBSCRIPTION_MASK_SINK_INPUT| PA_SUBSCRIPTION_MASK_SERVER), NULL, NULL))) { g_warning("pa_context_subscribe() failed"); } if (!(o = pa_context_get_server_info (c, pm_server_info_callback, userdata))) { g_warning("Initial - pa_context_get_server_info() failed"); } pa_operation_unref(o); break; } } /** After startup we go straight for the server info to see if it has details of the default sink and source. Normally these are valid, if there is none set fetch the list of each and try to determine the sink. **/ static void pm_server_info_callback (pa_context *c, const pa_server_info *info, void *userdata) { pa_operation *operation; g_debug ("server info callback"); if (info == NULL) { g_warning("No PA server - get the hell out of here"); active_sink_deactivate (ACTIVE_SINK (userdata)); return; } // Go for the default sink if (info->default_sink_name != NULL) { g_debug ("default sink name from the server ain't null'"); if (!(operation = pa_context_get_sink_info_by_name (c, info->default_sink_name, pm_default_sink_info_callback, userdata) )) { g_warning("pa_context_get_sink_info_by_namet() failed"); active_sink_deactivate (ACTIVE_SINK (userdata)); pa_operation_unref(operation); return; } } // If there is no default sink, try to determine a sink from the list of sinks else if (!(operation = pa_context_get_sink_info_list(c, pm_sink_info_callback, userdata))) { g_warning("pa_context_get_sink_info_list() failed"); active_sink_deactivate (ACTIVE_SINK (userdata)); pa_operation_unref(operation); return; } // And the source if (info->default_source_name != NULL) { g_debug ("default source name from the server is not null'"); if (!(operation = pa_context_get_source_info_by_name (c, info->default_source_name, pm_default_source_info_callback, userdata) )) { g_warning("pa_context_get_default_source_info() failed"); // TODO: call some input deactivate method on active sink pa_operation_unref(operation); return; } } else if (!(operation = pa_context_get_source_info_list(c, pm_source_info_callback, userdata))) { g_warning("pa_context_get_sink_info_list() failed"); // TODO: call some input deactivate method for the source } pa_operation_unref(operation); } // If the server doesn't have a default sink to give us // we should attempt to pick up the first of the list of sinks which doesn't have // the name 'auto_null' (that was all really I was doing before) static void pm_sink_info_callback (pa_context *c, const pa_sink_info *sink, int eol, void* userdata) { if (eol > 0) { return; } else { if (IS_ACTIVE_SINK (userdata) == FALSE){ g_warning ("sink info callback - our user data is not what we think it should be"); return; } ActiveSink* a_sink = ACTIVE_SINK (userdata); if (active_sink_is_populated (a_sink) == FALSE && g_ascii_strncasecmp("auto_null", sink->name, 9) != 0){ active_sink_populate (a_sink, sink); } } } static void pm_default_sink_info_callback (pa_context *c, const pa_sink_info *info, int eol, void *userdata) { if (eol > 0) { return; } else { if (IS_ACTIVE_SINK (userdata) == FALSE){ g_warning ("Default sink info callback - our user data is not what we think it should be"); return; } g_debug ("server has handed us a default sink"); active_sink_populate (ACTIVE_SINK (userdata), info); } } static void pm_sink_input_info_callback (pa_context *c, const pa_sink_input_info *info, int eol, void *userdata) { if (eol > 0) { return; } else { if (info == NULL) { // TODO: watch this carefully - PA async api should not be doing this . . . g_warning("\n Sink input info callback : SINK INPUT INFO IS NULL BUT EOL was not POSITIVE!!!"); return; } if (IS_ACTIVE_SINK (userdata) == FALSE){ g_warning ("sink input info callback - our user data is not what we think it should be"); return; } // Check if this is Voip sink input gint result = pa_proplist_contains (info->proplist, PA_PROP_MEDIA_ROLE); ActiveSink* a_sink = ACTIVE_SINK (userdata); if (result == 1){ g_debug ("Sink input info has media role property"); const char* value = pa_proplist_gets (info->proplist, PA_PROP_MEDIA_ROLE); g_debug ("prop role = %s", value); if (g_strcmp0 (value, "phone") == 0) { g_debug ("And yes its a VOIP app ... sink input index = %i", info->index); active_sink_activate_voip_item (a_sink, (gint)info->index, (gint)info->client); // TODO to start with we will assume our source is the same as what this 'client' // is pointing at. This should probably be more intelligent : // query for the list of source output info's and going on the name of the client // from the sink input ensure our voip item is using the right source. } } // And finally check for the mute blocking state if (active_sink_get_index (a_sink) == info->sink){ active_sink_determine_blocking_state (a_sink); } } } static void pm_update_active_sink (pa_context *c, const pa_sink_info *info, int eol, void *userdata) { if (eol > 0) { return; } else{ if (IS_ACTIVE_SINK (userdata) == FALSE){ g_warning ("update_active_sink - our user data is not what we think it should be"); return; } active_sink_update (ACTIVE_SINK(userdata), info); } } static void pm_toggle_mute_for_every_sink_callback (pa_context *c, const pa_sink_info *sink, int eol, void* userdata) { if (eol > 0) { return; } else { pa_operation_unref (pa_context_set_sink_mute_by_index (c, sink->index, GPOINTER_TO_INT(userdata), NULL, NULL)); } } // Source info related callbacks static void pm_default_source_info_callback (pa_context *c, const pa_source_info *info, int eol, void *userdata) { if (eol > 0) { return; } else { if (IS_ACTIVE_SINK (userdata) == FALSE){ g_warning ("Default sink info callback - our user data is not what we think it should be"); return; } g_debug ("server has handed us a default source"); active_sink_update_voip_input_source (ACTIVE_SINK (userdata), info); } } static void pm_source_info_callback (pa_context *c, const pa_source_info *info, int eol, void *userdata) { if (eol > 0) { return; } else { if (IS_ACTIVE_SINK (userdata) == FALSE){ g_warning ("Default sink info callback - our user data is not what we think it should be"); return; } // For now we will take the first available if (active_sink_is_voip_source_populated (ACTIVE_SINK (userdata)) == FALSE){ active_sink_update_voip_input_source (ACTIVE_SINK (userdata), info); } } } static void pm_update_source_info_callback (pa_context *c, const pa_source_info *info, int eol, void *userdata) { if (eol > 0) { return; } else { if (IS_ACTIVE_SINK (userdata) == FALSE){ g_warning ("Default sink info callback - our user data is not what we think it should be"); return; } g_debug ("Got a source update for %s , index %i", info->name, info->index); active_sink_update_voip_input_source (ACTIVE_SINK (userdata), info); } }