1 files changed, 126 insertions, 209 deletions

diff --git a/src/mixer/pulse_mixer_plugin.c b/src/mixer/pulse_mixer_plugin.c
index ecc0fc75..b33ef80a 100644
--- a/src/mixer/pulse_mixer_plugin.c
+++ b/src/mixer/pulse_mixer_plugin.c
@@ -18,12 +18,20 @@
  */
 
 #include "mixer_api.h"
+#include "output/pulse_output_plugin.h"
 #include "conf.h"
+#include "event_pipe.h"
 
 #include <glib.h>
-#include <pulse/volume.h>
-#include <pulse/pulseaudio.h>
 
+#include <pulse/thread-mainloop.h>
+#include <pulse/context.h>
+#include <pulse/introspect.h>
+#include <pulse/stream.h>
+#include <pulse/subscribe.h>
+#include <pulse/error.h>
+
+#include <assert.h>
 #include <string.h>
 
 #undef G_LOG_DOMAIN
@@ -32,15 +40,9 @@
 struct pulse_mixer {
 	struct mixer base;
 
-	const char *server;
-	const char *sink;
-	const char *output_name;
+	struct pulse_output *output;
 
-	uint32_t index;
 	bool online;
-
-	struct pa_context *context;
-	struct pa_threaded_mainloop *mainloop;
 	struct pa_cvolume volume;
 
 };
@@ -54,175 +56,159 @@ pulse_mixer_quark(void)
 	return g_quark_from_static_string("pulse_mixer");
 }
 
-/**
- * \brief waits for a pulseaudio operation to finish, frees it and
- *     unlocks the mainloop
- * \param operation the operation to wait for
- * \return true if operation has finished normally (DONE state),
- *     false otherwise
- */
-static bool
-pulse_wait_for_operation(struct pa_threaded_mainloop *mainloop,
-			 struct pa_operation *operation)
+static void
+pulse_mixer_offline(struct pulse_mixer *pm)
 {
-	pa_operation_state_t state;
-
-	assert(mainloop != NULL);
-	assert(operation != NULL);
-
-	state = pa_operation_get_state(operation);
-	while (state == PA_OPERATION_RUNNING) {
-		pa_threaded_mainloop_wait(mainloop);
-		state = pa_operation_get_state(operation);
-	}
+	if (!pm->online)
+		return;
 
-	pa_operation_unref(operation);
+	pm->online = false;
 
-	return state == PA_OPERATION_DONE;
+	event_pipe_emit(PIPE_EVENT_MIXER);
 }
 
+/**
+ * Callback invoked by pulse_mixer_update().  Receives the new mixer
+ * value.
+ */
 static void
-sink_input_cb(G_GNUC_UNUSED pa_context *context, const pa_sink_input_info *i,
-	      int eol, void *userdata)
+pulse_mixer_volume_cb(G_GNUC_UNUSED pa_context *context, const pa_sink_input_info *i,
+		      int eol, void *userdata)
 {
-
 	struct pulse_mixer *pm = userdata;
 
-	if (eol) {
-		g_debug("eol error sink_input_cb");
+	if (eol)
 		return;
-	}
 
 	if (i == NULL) {
-		g_debug("Sink input callback failure");
+		pulse_mixer_offline(pm);
 		return;
 	}
 
-	g_debug("sink input cb %s, index %d ",i->name,i->index);
+	pm->online = true;
+	pm->volume = i->volume;
 
-	if (strcmp(i->name,pm->output_name) == 0) {
-		pm->index = i->index;
-		pm->online = true;
-		pm->volume = i->volume;
-	} else
-		g_debug("bad name");
+	event_pipe_emit(PIPE_EVENT_MIXER);
 }
 
 static void
-sink_input_vol(G_GNUC_UNUSED pa_context *context, const pa_sink_input_info *i,
-	       int eol, void *userdata)
+pulse_mixer_update(struct pulse_mixer *pm)
 {
+	pa_operation *o;
 
-	struct pulse_mixer *pm = userdata;
+	assert(pm->output->stream != NULL);
 
-	if (eol) {
-		g_debug("eol error sink_input_vol");
+	if (pm->output->context == NULL)
 		return;
-	}
 
-	if (i == NULL) {
-		g_debug("Sink input callback failure");
+	o = pa_context_get_sink_input_info(pm->output->context,
+					   pa_stream_get_index(pm->output->stream),
+					   pulse_mixer_volume_cb, pm);
+	if (o == NULL) {
+		g_warning("pa_context_get_sink_input_info() failed: %s",
+			  pa_strerror(pa_context_errno(pm->output->context)));
+		pulse_mixer_offline(pm);
 		return;
 	}
 
-	g_debug("sink input vol %s, index %d ", i->name, i->index);
+	pa_operation_unref(o);
+}
 
-	pm->volume = i->volume;
+static void
+pulse_mixer_handle_sink_input(struct pulse_mixer *pm,
+			      pa_subscription_event_type_t t,
+			      uint32_t idx)
+{
+	if (pm->output->stream == NULL) {
+		pulse_mixer_offline(pm);
+		return;
+	}
+
+	if (idx != pa_stream_get_index(pm->output->stream))
+		return;
 
-	pa_threaded_mainloop_signal(pm->mainloop, 0);
+	if (t == PA_SUBSCRIPTION_EVENT_NEW ||
+	    t == PA_SUBSCRIPTION_EVENT_CHANGE)
+		pulse_mixer_update(pm);
 }
 
 static void
-subscribe_cb(pa_context *c, pa_subscription_event_type_t t,
+pulse_mixer_subscribe_cb(G_GNUC_UNUSED pa_context *c, pa_subscription_event_type_t t,
 	     uint32_t idx, void *userdata)
 {
-
 	struct pulse_mixer *pm = userdata;
 
-	g_debug("subscribe call back");
-
 	switch (t & PA_SUBSCRIPTION_EVENT_FACILITY_MASK) {
 	case PA_SUBSCRIPTION_EVENT_SINK_INPUT:
-		if ((t & PA_SUBSCRIPTION_EVENT_TYPE_MASK) ==
-		    PA_SUBSCRIPTION_EVENT_REMOVE &&
-		    pm->index == idx)
-			pm->online = false;
-		else {
-			pa_operation *o;
-
-			o = pa_context_get_sink_input_info(c, idx,
-							   sink_input_cb, pm);
-			if (o == NULL) {
-				g_debug("pa_context_get_sink_input_info() failed");
-				return;
-			}
-
-			pa_operation_unref(o);
-		}
-
+		pulse_mixer_handle_sink_input(pm,
+					      t & PA_SUBSCRIPTION_EVENT_TYPE_MASK,
+					      idx);
 		break;
 	}
 }
 
 static void
-context_state_cb(pa_context *context, void *userdata)
+pulxe_mixer_context_state_cb(pa_context *context, void *userdata)
 {
 	struct pulse_mixer *pm = userdata;
+	pa_operation *o;
 
-	switch (pa_context_get_state(context)) {
-	case PA_CONTEXT_READY: {
-		pa_operation *o;
+	/* pass event to the output's callback function */
+	pulse_output_context_state_cb(context, pm->output);
 
-		pa_context_set_subscribe_callback(context, subscribe_cb, pm);
+	if (pa_context_get_state(context) == PA_CONTEXT_READY) {
+		/* subscribe to sink_input events after the connection
+		   has been established */
 
 		o = pa_context_subscribe(context,
 					 (pa_subscription_mask_t)PA_SUBSCRIPTION_MASK_SINK_INPUT,
 					 NULL, NULL);
 		if (o == NULL) {
-			g_debug("pa_context_subscribe() failed");
+			g_warning("pa_context_subscribe() failed: %s",
+				  pa_strerror(pa_context_errno(context)));
 			return;
 		}
 
 		pa_operation_unref(o);
 
-		o = pa_context_get_sink_input_info_list(context,
-							sink_input_cb, pm);
-		if (o == NULL) {
-			g_debug("pa_context_get_sink_input_info_list() failed");
-			return;
-		}
-
-		pa_operation_unref(o);
-
-		pa_threaded_mainloop_signal(pm->mainloop, 0);
-		break;
-	}
-
-	case PA_CONTEXT_UNCONNECTED:
-	case PA_CONTEXT_CONNECTING:
-	case PA_CONTEXT_AUTHORIZING:
-	case PA_CONTEXT_SETTING_NAME:
-		break;
-	case PA_CONTEXT_TERMINATED:
-	case PA_CONTEXT_FAILED:
-		pa_threaded_mainloop_signal(pm->mainloop, 0);
-		break;
+		if (pm->output->stream != NULL)
+			pulse_mixer_update(pm);
 	}
 }
 
-
 static struct mixer *
-pulse_mixer_init(G_GNUC_UNUSED void *ao, const struct config_param *param,
-		 G_GNUC_UNUSED GError **error_r)
+pulse_mixer_init(void *ao, G_GNUC_UNUSED const struct config_param *param,
+		 GError **error_r)
 {
-	struct pulse_mixer *pm = g_new(struct pulse_mixer,1);
+	struct pulse_mixer *pm;
+
+	if (ao == NULL) {
+		g_set_error(error_r, pulse_mixer_quark(), 0,
+			    "The pulse mixer cannot work without the audio output");
+		return false;
+	}
+
+	pm = g_new(struct pulse_mixer,1);
 	mixer_init(&pm->base, &pulse_mixer_plugin);
 
+	pm->output = ao;
 	pm->online = false;
 
-	pm->server = config_get_block_string(param, "server", NULL);
-	pm->sink = config_get_block_string(param, "sink", NULL);
-	pm->output_name = config_get_block_string(param, "name", NULL);
+	pa_threaded_mainloop_lock(pm->output->mainloop);
+
+	/* register callbacks (override the output's context state
+	   callback) */
+
+	pa_context_set_state_callback(pm->output->context,
+				      pulxe_mixer_context_state_cb, pm);
+	pa_context_set_subscribe_callback(pm->output->context,
+					  pulse_mixer_subscribe_cb, pm);
+
+	/* check the current state now (we might have missed the first
+	   events!) */
+	pulxe_mixer_context_state_cb(pm->output->context, pm);
+
+	pa_threaded_mainloop_unlock(pm->output->mainloop);
 
 	return &pm->base;
 }
@@ -232,79 +218,35 @@ pulse_mixer_finish(struct mixer *data)
 {
 	struct pulse_mixer *pm = (struct pulse_mixer *) data;
 
-	g_free(pm);
-}
+	/* restore callbacks */
 
-static bool
-pulse_mixer_setup(struct pulse_mixer *pm, GError **error_r)
-{
-	pa_context_set_state_callback(pm->context, context_state_cb, pm);
+	pa_threaded_mainloop_lock(pm->output->mainloop);
 
-	if (pa_context_connect(pm->context, pm->server,
-			       (pa_context_flags_t)0, NULL) < 0) {
-		g_set_error(error_r, pulse_mixer_quark(), 0,
-			    "pa_context_connect() has failed");
-		return false;
+	if (pm->output->context != NULL) {
+		pa_context_set_state_callback(pm->output->context,
+					      pulse_output_context_state_cb,
+					      pm->output);
+		pa_context_set_subscribe_callback(pm->output->context,
+						  NULL, NULL);
 	}
 
-	pa_threaded_mainloop_lock(pm->mainloop);
+	pa_threaded_mainloop_unlock(pm->output->mainloop);
 
-	if (pa_threaded_mainloop_start(pm->mainloop) < 0) {
-		pa_threaded_mainloop_unlock(pm->mainloop);
-		g_set_error(error_r, pulse_mixer_quark(), 0,
-			    "pa_threaded_mainloop_start() has failed");
-		return false;
-	}
-
-	pa_threaded_mainloop_wait(pm->mainloop);
-
-	if (pa_context_get_state(pm->context) != PA_CONTEXT_READY) {
-		g_set_error(error_r, pulse_mixer_quark(), 0,
-			    "failed to connect: %s",
-			    pa_strerror(pa_context_errno(pm->context)));
-		pa_threaded_mainloop_unlock(pm->mainloop);
-		return false;
-	}
+	/* free resources */
 
-	pa_threaded_mainloop_unlock(pm->mainloop);
-
-	return true;
+	g_free(pm);
 }
 
 static bool
-pulse_mixer_open(struct mixer *data, GError **error_r)
+pulse_mixer_open(struct mixer *data, G_GNUC_UNUSED GError **error_r)
 {
 	struct pulse_mixer *pm = (struct pulse_mixer *) data;
 
-	g_debug("pulse mixer open");
-
-	pm->index = 0;
-	pm->online = false;
-
-	pm->mainloop = pa_threaded_mainloop_new();
-	if (pm->mainloop == NULL) {
-		g_set_error(error_r, pulse_mixer_quark(), 0,
-			    "pa_threaded_mainloop_new() has failed");
-		return false;
-	}
-
-	pm->context = pa_context_new(pa_threaded_mainloop_get_api(pm->mainloop),
-				     "Mixer mpd");
-	if (pm->context == NULL) {
-		pa_threaded_mainloop_stop(pm->mainloop);
-		pa_threaded_mainloop_free(pm->mainloop);
-		g_set_error(error_r, pulse_mixer_quark(), 0,
-			    "pa_context_new() has failed");
-		return false;
-	}
-
-	if (!pulse_mixer_setup(pm, error_r)) {
-		pa_threaded_mainloop_stop(pm->mainloop);
-		pa_context_disconnect(pm->context);
-		pa_context_unref(pm->context);
-		pa_threaded_mainloop_free(pm->mainloop);
-		return false;
-	}
+	pa_threaded_mainloop_lock(pm->output->mainloop);
+	if (pm->output->stream != NULL &&
+	    pa_stream_get_state(pm->output->stream) == PA_STREAM_READY)
+		pulse_mixer_update(pm);
+	pa_threaded_mainloop_unlock(pm->output->mainloop);
 
 	return true;
 }
@@ -314,49 +256,22 @@ pulse_mixer_close(struct mixer *data)
 {
 	struct pulse_mixer *pm = (struct pulse_mixer *) data;
 
-	pa_threaded_mainloop_stop(pm->mainloop);
-	pa_context_disconnect(pm->context);
-	pa_context_unref(pm->context);
-	pa_threaded_mainloop_free(pm->mainloop);
-
-	pm->online = false;
+	pulse_mixer_offline(pm);
 }
 
 static int
-pulse_mixer_get_volume(struct mixer *mixer, GError **error_r)
+pulse_mixer_get_volume(struct mixer *mixer, G_GNUC_UNUSED GError **error_r)
 {
 	struct pulse_mixer *pm = (struct pulse_mixer *) mixer;
 	int ret;
-	pa_operation *o;
 
-	pa_threaded_mainloop_lock(pm->mainloop);
-
-	if (!pm->online) {
-		pa_threaded_mainloop_unlock(pm->mainloop);
-		return false;
-	}
-
-	o = pa_context_get_sink_input_info(pm->context, pm->index,
-					   sink_input_vol, pm);
-	if (o == NULL) {
-		pa_threaded_mainloop_unlock(pm->mainloop);
-		g_set_error(error_r, pulse_mixer_quark(), 0,
-			    "pa_context_get_sink_input_info() has failed");
-		return false;
-	}
-
-	if (!pulse_wait_for_operation(pm->mainloop, o)) {
-		pa_threaded_mainloop_unlock(pm->mainloop);
-		g_set_error(error_r, pulse_mixer_quark(), 0,
-			    "failed to read PulseAudio volume");
-		return false;
-	}
+	pa_threaded_mainloop_lock(pm->output->mainloop);
 
 	ret = pm->online
 		? (int)((100*(pa_cvolume_avg(&pm->volume)+1))/PA_VOLUME_NORM)
 		: -1;
 
-	pa_threaded_mainloop_unlock(pm->mainloop);
+	pa_threaded_mainloop_unlock(pm->output->mainloop);
 
 	return ret;
 }
@@ -368,10 +283,11 @@ pulse_mixer_set_volume(struct mixer *mixer, unsigned volume, GError **error_r)
 	struct pa_cvolume cvolume;
 	pa_operation *o;
 
-	pa_threaded_mainloop_lock(pm->mainloop);
+	pa_threaded_mainloop_lock(pm->output->mainloop);
 
-	if (!pm->online) {
-		pa_threaded_mainloop_unlock(pm->mainloop);
+	if (!pm->online || pm->output->stream == NULL ||
+	    pm->output->context == NULL) {
+		pa_threaded_mainloop_unlock(pm->output->mainloop);
 		g_set_error(error_r, pulse_mixer_quark(), 0, "disconnected");
 		return false;
 	}
@@ -379,9 +295,10 @@ pulse_mixer_set_volume(struct mixer *mixer, unsigned volume, GError **error_r)
 	pa_cvolume_set(&cvolume, pm->volume.channels,
 		       (pa_volume_t)volume * PA_VOLUME_NORM / 100 + 0.5);
 
-	o = pa_context_set_sink_input_volume(pm->context, pm->index,
+	o = pa_context_set_sink_input_volume(pm->output->context,
+					     pa_stream_get_index(pm->output->stream),
 					     &cvolume, NULL, NULL);
-	pa_threaded_mainloop_unlock(pm->mainloop);
+	pa_threaded_mainloop_unlock(pm->output->mainloop);
 	if (o == NULL) {
 		g_set_error(error_r, pulse_mixer_quark(), 0,
 			    "failed to set PulseAudio volume");