1 files changed, 452 insertions, 0 deletions
diff --git a/src/pulsemixerctrl.c b/src/pulsemixerctrl.c
new file mode 100644
index 0000000..4786004
--- /dev/null
+++ b/src/pulsemixerctrl.c
@@ -0,0 +1,452 @@
+/* $Id$ */
+
+/***
+  This file is part of gst-pulse.
+ 
+  gst-pulse is free software; you can redistribute it and/or modify
+  it under the terms of the GNU Lesser General Public License as
+  published by the Free Software Foundation; either version 2.1 of the
+  License, or (at your option) any later version.
+ 
+  gst-pulse 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
+  Lesser General Public License for more details.
+ 
+  You should have received a copy of the GNU Lesser General Public
+  License along with gst-pulse; 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 <gst/gst.h>
+
+#include "pulsemixerctrl.h"
+#include "pulsemixertrack.h"
+#include "pulseutil.h"
+
+GST_DEBUG_CATEGORY_EXTERN(pulse_debug);
+#define GST_CAT_DEFAULT pulse_debug
+
+static void gst_pulsemixer_ctrl_context_state_cb(pa_context *context, void *userdata) {
+    GstPolypMixerCtrl *c = GST_PULSEMIXER_CTRL(userdata);
+
+    /* Called from the background thread! */
+    
+    switch (pa_context_get_state(context)) {
+        case PA_CONTEXT_READY:
+        case PA_CONTEXT_TERMINATED:
+        case PA_CONTEXT_FAILED:
+            pa_threaded_mainloop_signal(c->mainloop, 0);
+            break;
+
+        case PA_CONTEXT_UNCONNECTED:
+        case PA_CONTEXT_CONNECTING:
+        case PA_CONTEXT_AUTHORIZING:
+        case PA_CONTEXT_SETTING_NAME:
+            break;
+    }
+}
+
+static void gst_pulsemixer_ctrl_sink_info_cb(pa_context *context, const pa_sink_info *i, int eol, void *userdata) {
+    GstPolypMixerCtrl *c = (GstPolypMixerCtrl*) userdata;
+
+    /* Called from the background thread! */
+
+    if (!i && eol < 0) {
+        c->operation_success = 0;
+        pa_threaded_mainloop_signal(c->mainloop, 0);
+        return;
+    }
+
+    if (eol)
+        return;
+
+    g_free(c->name);
+    g_free(c->description);
+    c->name = g_strdup(i->name);
+    c->description = g_strdup(i->description);
+    c->index = i->index;
+    c->channel_map = i->channel_map;
+    c->volume = i->volume;
+    c->muted = i->mute;
+    c->type = GST_PULSEMIXER_SINK;
+
+
+    if (c->track)
+        c->track->flags = (c->track->flags & ~GST_MIXER_TRACK_MUTE) | (c->muted ? GST_MIXER_TRACK_MUTE : 0);
+    
+    c->operation_success = 1;
+    pa_threaded_mainloop_signal(c->mainloop, 0);
+}
+
+static void gst_pulsemixer_ctrl_source_info_cb(pa_context *context, const pa_source_info *i, int eol, void *userdata) {
+    GstPolypMixerCtrl *c = (GstPolypMixerCtrl*) userdata;
+
+    /* Called from the background thread! */
+
+    if (!i && eol < 0) {
+        c->operation_success = 0;
+        pa_threaded_mainloop_signal(c->mainloop, 0);
+        return;
+    }
+
+    if (eol)
+        return;
+    
+    g_free(c->name);
+    g_free(c->description);
+    c->name = g_strdup(i->name);
+    c->description = g_strdup(i->description);
+    c->index = i->index;
+    c->channel_map = i->channel_map;
+    c->volume = i->volume;
+    c->muted = i->mute;
+    c->type = GST_PULSEMIXER_SOURCE;
+
+    if (c->track)
+        c->track->flags = (c->track->flags & ~GST_MIXER_TRACK_MUTE) | (c->muted ? GST_MIXER_TRACK_MUTE : 0);
+
+    c->operation_success = 1;
+    pa_threaded_mainloop_signal(c->mainloop, 0);
+}
+
+static void gst_pulsemixer_ctrl_subscribe_cb(pa_context *context, pa_subscription_event_type_t t, uint32_t idx, void *userdata) {
+    GstPolypMixerCtrl *c = GST_PULSEMIXER_CTRL(userdata);
+    pa_operation *o = NULL;
+
+    /* Called from the background thread! */
+    
+    if (c->index != idx)
+        return;
+
+    if ((t & PA_SUBSCRIPTION_EVENT_TYPE_MASK) != PA_SUBSCRIPTION_EVENT_CHANGE)
+        return;
+
+    if (c->type == GST_PULSEMIXER_SINK)
+        o = pa_context_get_sink_info_by_index(c->context, c->index, gst_pulsemixer_ctrl_sink_info_cb, c);
+    else
+        o = pa_context_get_source_info_by_index(c->context, c->index, gst_pulsemixer_ctrl_source_info_cb, c);
+            
+    if (!o) {
+        GST_WARNING("Failed to get sink info: %s", pa_strerror(pa_context_errno(c->context)));
+        return;
+    }
+
+    pa_operation_unref(o);
+}
+
+static void gst_pulsemixer_ctrl_success_cb(pa_context *context, int success, void *userdata) {
+    GstPolypMixerCtrl *c = (GstPolypMixerCtrl*) userdata;
+
+    c->operation_success = success;
+    pa_threaded_mainloop_signal(c->mainloop, 0);
+}
+
+#define CHECK_DEAD_GOTO(c, label) do { \
+if (!(c)->context || pa_context_get_state((c)->context) != PA_CONTEXT_READY) { \
+    GST_WARNING("Not connected: %s", (c)->context ? pa_strerror(pa_context_errno((c)->context)) : "NULL"); \
+    goto label; \
+} \
+} while(0);
+
+static gboolean gst_pulsemixer_ctrl_open(GstPolypMixerCtrl *c) {
+    int e;
+    gchar *name = gst_pulse_client_name();
+    pa_operation *o = NULL;
+
+    g_assert(c);
+
+    c->mainloop = pa_threaded_mainloop_new();
+    g_assert(c->mainloop);
+
+    e = pa_threaded_mainloop_start(c->mainloop);
+    g_assert(e == 0);
+
+    pa_threaded_mainloop_lock(c->mainloop);
+
+    if (!(c->context = pa_context_new(pa_threaded_mainloop_get_api(c->mainloop), name))) {
+        GST_WARNING("Failed to create context");
+        goto unlock_and_fail;
+    }
+
+    pa_context_set_state_callback(c->context, gst_pulsemixer_ctrl_context_state_cb, c);
+    pa_context_set_subscribe_callback(c->context, gst_pulsemixer_ctrl_subscribe_cb, c);
+    
+    if (pa_context_connect(c->context, c->server, 0, NULL) < 0) {
+        GST_WARNING("Failed to connect context: %s", pa_strerror(pa_context_errno(c->context)));
+        goto unlock_and_fail;
+    }
+
+    /* Wait until the context is ready */
+    pa_threaded_mainloop_wait(c->mainloop);
+
+    if (pa_context_get_state(c->context) != PA_CONTEXT_READY) {
+        GST_WARNING("Failed to connect context: %s", pa_strerror(pa_context_errno(c->context)));
+        goto unlock_and_fail;
+    }
+
+    /* Subscribe to events */
+    
+    if (!(o = pa_context_subscribe(c->context, PA_SUBSCRIPTION_MASK_SINK|PA_SUBSCRIPTION_MASK_SOURCE, gst_pulsemixer_ctrl_success_cb, c))) {
+        GST_WARNING("Failed to subscribe to events: %s", pa_strerror(pa_context_errno(c->context)));
+        goto unlock_and_fail;
+    }
+
+    c->operation_success = 0;
+    while (pa_operation_get_state(o) != PA_OPERATION_DONE) {
+        pa_threaded_mainloop_wait(c->mainloop);
+        CHECK_DEAD_GOTO(c, unlock_and_fail);
+    }
+
+    if (!c->operation_success) {
+        GST_WARNING("Failed to subscribe to events: %s", pa_strerror(pa_context_errno(c->context)));
+        goto unlock_and_fail;
+    }
+
+    /* Get sink info */
+
+    if (c->type == GST_PULSEMIXER_UNKNOWN || c->type == GST_PULSEMIXER_SINK) {
+        if (!(o = pa_context_get_sink_info_by_name(c->context, c->device, gst_pulsemixer_ctrl_sink_info_cb, c))) {
+            GST_WARNING("Failed to get sink info: %s", pa_strerror(pa_context_errno(c->context)));
+            goto unlock_and_fail;
+        }
+        
+        c->operation_success = 0;
+        while (pa_operation_get_state(o) != PA_OPERATION_DONE) {
+            pa_threaded_mainloop_wait(c->mainloop);
+            CHECK_DEAD_GOTO(c, unlock_and_fail);
+        }
+        
+        pa_operation_unref(o);
+        o = NULL;
+
+        if (!c->operation_success && (c->type == GST_PULSEMIXER_SINK || pa_context_errno(c->context) != PA_ERR_NOENTITY)) {
+            GST_WARNING("Failed to get sink info: %s", pa_strerror(pa_context_errno(c->context)));
+            goto unlock_and_fail;
+        }
+    }
+
+    if (c->type == GST_PULSEMIXER_UNKNOWN || c->type == GST_PULSEMIXER_SOURCE) {
+        if (!(o = pa_context_get_source_info_by_name(c->context, c->device, gst_pulsemixer_ctrl_source_info_cb, c))) {
+            GST_WARNING("Failed to get source info: %s", pa_strerror(pa_context_errno(c->context)));
+            goto unlock_and_fail;
+        }
+        
+        c->operation_success = 0;
+        while (pa_operation_get_state(o) != PA_OPERATION_DONE) {
+            pa_threaded_mainloop_wait(c->mainloop);
+            CHECK_DEAD_GOTO(c, unlock_and_fail);
+        }
+        
+        pa_operation_unref(o);
+        o = NULL;
+
+        if (!c->operation_success) {
+            GST_WARNING("Failed to get source info: %s", pa_strerror(pa_context_errno(c->context)));
+            goto unlock_and_fail;
+        }
+    }
+
+    g_assert(c->type != GST_PULSEMIXER_UNKNOWN);
+
+    c->track = gst_pulsemixer_track_new(c);
+    c->tracklist = g_list_append(c->tracklist, c->track);
+
+    pa_threaded_mainloop_unlock(c->mainloop);
+    g_free(name);
+
+    return TRUE;
+
+unlock_and_fail:
+
+    if (o)
+        pa_operation_unref(o);
+    
+    if (c->mainloop)
+        pa_threaded_mainloop_unlock(c->mainloop);
+
+    g_free(name);
+    
+    return FALSE;
+}
+
+static void gst_pulsemixer_ctrl_close(GstPolypMixerCtrl *c) {
+    g_assert(c);
+
+    if (c->mainloop)
+        pa_threaded_mainloop_stop(c->mainloop);
+    
+    if (c->context) {
+        pa_context_disconnect(c->context);
+        pa_context_unref(c->context);
+        c->context = NULL;
+    }
+
+    if (c->mainloop) {
+        pa_threaded_mainloop_free(c->mainloop);
+        c->mainloop = NULL;
+        c->time_event = NULL;
+    }
+
+    if (c->tracklist) {
+        g_list_free(c->tracklist);
+        c->tracklist = NULL;
+    }
+
+    if (c->track) {
+        GST_PULSEMIXER_TRACK(c->track)->control = NULL;
+        g_object_unref(c->track);
+        c->track = NULL;
+    }
+}
+
+GstPolypMixerCtrl* gst_pulsemixer_ctrl_new(const gchar *server, const gchar *device, GstPolypMixerType type) {
+    GstPolypMixerCtrl *c = NULL;
+
+    c = g_new(GstPolypMixerCtrl, 1);
+    c->tracklist = NULL;
+    c->server = g_strdup(server);
+    c->device = g_strdup(device);
+    c->mainloop = NULL;
+    c->context = NULL;
+    c->track = NULL;
+
+    pa_cvolume_mute(&c->volume, PA_CHANNELS_MAX);
+    pa_channel_map_init(&c->channel_map);
+    c->muted = 0;
+    c->index = PA_INVALID_INDEX;
+    c->type = type;
+    c->name = NULL;
+    c->description = NULL;
+
+    c->time_event = NULL;
+
+    if (!(gst_pulsemixer_ctrl_open(c))) {
+        gst_pulsemixer_ctrl_free(c);
+        return NULL;
+    }
+    
+    return c;
+}
+
+void gst_pulsemixer_ctrl_free(GstPolypMixerCtrl *c) {
+    g_assert(c);
+
+    gst_pulsemixer_ctrl_close(c);
+    
+    g_free(c->server);
+    g_free(c->device);
+    g_free(c->name);
+    g_free(c->description);
+    g_free(c);
+}
+
+const GList* gst_pulsemixer_ctrl_list_tracks(GstPolypMixerCtrl *c) {
+    g_assert(c);
+
+    return c->tracklist;
+}
+
+static void gst_pulsemixer_ctrl_timeout_event(pa_mainloop_api *a, pa_time_event *e, const struct timeval *tv, void *userdata) {
+    pa_operation *o;
+    GstPolypMixerCtrl *c = GST_PULSEMIXER_CTRL(userdata);
+    
+    if (c->type == GST_PULSEMIXER_SINK)
+        o = pa_context_set_sink_volume_by_index(c->context, c->index, &c->volume, NULL, NULL);
+    else
+        o = pa_context_set_source_volume_by_index(c->context, c->index, &c->volume, NULL, NULL);
+    
+    if (!(o))
+        GST_WARNING("Failed to set device volume: %s", pa_strerror(pa_context_errno(c->context)));
+    else
+        pa_operation_unref(o);
+
+    g_assert(e == c->time_event);
+    a->time_free(e);
+    c->time_event = NULL;
+}
+
+void gst_pulsemixer_ctrl_set_volume(GstPolypMixerCtrl *c, GstMixerTrack *track, gint *volumes) {
+    pa_cvolume v;
+    int i;
+    
+    g_assert(c);
+    g_assert(track == c->track);
+
+    pa_threaded_mainloop_lock(c->mainloop);
+
+    for (i = 0; i < c->channel_map.channels; i++)
+        v.values[i] = (pa_volume_t) volumes[i];
+
+    v.channels = c->channel_map.channels;
+
+    c->volume = v;
+
+    if (!c->time_event) {
+        /* Updating the volume too often will cause a lot of traffic
+         * when accessing a networked server. Therefore we make sure
+         * to update the volume only once every 100ms */
+        struct timeval tv;
+        pa_mainloop_api *api = pa_threaded_mainloop_get_api(c->mainloop);
+        c->time_event = api->time_new(api, pa_timeval_add(pa_gettimeofday(&tv), 100000), gst_pulsemixer_ctrl_timeout_event, c);
+    }
+    
+    pa_threaded_mainloop_unlock(c->mainloop);
+}
+
+void gst_pulsemixer_ctrl_get_volume(GstPolypMixerCtrl *c, GstMixerTrack *track, gint *volumes) {
+    int i;
+    
+    g_assert(c);
+    g_assert(track == c->track);
+
+    pa_threaded_mainloop_lock(c->mainloop);
+    
+    for (i = 0; i < c->channel_map.channels; i++)
+        volumes[i] = c->volume.values[i];
+
+    pa_threaded_mainloop_unlock(c->mainloop);
+}
+
+void gst_pulsemixer_ctrl_set_record(GstPolypMixerCtrl *c, GstMixerTrack *track, gboolean record) {
+    g_assert(c);
+    g_assert(track == c->track);
+}
+
+void gst_pulsemixer_ctrl_set_mute(GstPolypMixerCtrl *c, GstMixerTrack *track, gboolean mute) {
+    pa_operation *o = NULL;
+    
+    g_assert(c);
+    g_assert(track == c->track);
+
+    pa_threaded_mainloop_lock(c->mainloop);
+
+    if (c->type == GST_PULSEMIXER_SINK)
+        o = pa_context_set_sink_mute_by_index(c->context, c->index, !!mute, NULL, NULL);
+    else
+        o = pa_context_set_source_mute_by_index(c->context, c->index, !!mute, NULL, NULL);
+    
+    if (!(o)) {
+        GST_WARNING("Failed to set device mute status: %s", pa_strerror(pa_context_errno(c->context)));
+        goto unlock_and_fail;
+    }
+
+    c->muted = mute;
+    
+    if (c->track)
+        c->track->flags = (c->track->flags & ~GST_MIXER_TRACK_MUTE) | (c->muted ? GST_MIXER_TRACK_MUTE : 0);
+    
+    /* We're not interested in the return code of this operation */
+    
+unlock_and_fail:
+
+    if (o)
+        pa_operation_unref(o);
+    
+    pa_threaded_mainloop_unlock(c->mainloop);
+}