Imported Upstream version 0.13.2+dsfg1

plugins/linux-jack/jack-input.c

@@ -0,0 +1,150 @@
+/*
+Copyright (C) 2015 by Bernd Buschinski <b.buschinski@gmail.com>
+
+This program is free software: you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation, either version 2 of the License, or
+(at your option) any later version.
+
+This program 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 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 <http://www.gnu.org/licenses/>.
+*/
+
+#include "jack-wrapper.h"
+
+#include <obs-module.h>
+
+/**
+ * Returns the name of the plugin
+ */
+static const char *jack_input_getname(void *unused)
+{
+	UNUSED_PARAMETER(unused);
+	return obs_module_text("JACKInput");
+}
+
+/**
+ * Destroy the plugin object and free all memory
+ */
+static void jack_destroy(void *vptr)
+{
+	struct jack_data* data = (struct jack_data*)vptr;
+
+	if (!data)
+		return;
+
+	deactivate_jack(data);
+
+	if (data->device)
+		bfree(data->device);
+	pthread_mutex_destroy(&data->jack_mutex);
+	bfree(data);
+}
+
+/**
+ * Update the input settings
+ */
+static void jack_update(void *vptr, obs_data_t *settings)
+{
+	struct jack_data* data = (struct jack_data*)vptr;
+	if (!data)
+		return;
+
+	const char *new_device;
+	bool settings_changed      = false;
+	bool new_jack_start_server = obs_data_get_bool(settings, "startjack");
+	int new_channel_count      = obs_data_get_int(settings, "channels");
+
+	if (new_jack_start_server != data->start_jack_server) {
+		data->start_jack_server = new_jack_start_server;
+		settings_changed = true;
+	}
+
+	if (new_channel_count != data->channels)
+		/*
+		 * keep "old" channel count  for now,
+		 * we need to destroy the correct number of channels
+		 */
+		settings_changed = true;
+
+	new_device = obs_source_get_name(data->source);
+	if (!data->device || strcmp(data->device, new_device) != 0) {
+		if (data->device)
+			bfree(data->device);
+		data->device = bstrdup(new_device);
+		settings_changed = true;
+	}
+
+	if (settings_changed) {
+		deactivate_jack(data);
+
+		data->channels = new_channel_count;
+
+		if (jack_init(data) != 0) {
+			deactivate_jack(data);
+		}
+	}
+}
+
+/**
+ * Create the plugin object
+ */
+static void *jack_create(obs_data_t *settings, obs_source_t *source)
+{
+	struct jack_data *data = bzalloc(sizeof(struct jack_data));
+
+	pthread_mutex_init(&data->jack_mutex, NULL);
+	data->source   = source;
+	data->channels = -1;
+
+	jack_update(data, settings);
+
+	if (data->jack_client == NULL) {
+		jack_destroy(data);
+		return NULL;
+	}
+	return data;
+}
+
+/**
+ * Get plugin defaults
+ */
+static void jack_input_defaults(obs_data_t *settings)
+{
+	obs_data_set_default_int(settings, "channels", 2);
+	obs_data_set_default_bool(settings, "startjack", false);
+}
+
+/**
+ * Get plugin properties
+ */
+static obs_properties_t *jack_input_properties(void *unused)
+{
+	(void)unused;
+
+	obs_properties_t *props = obs_properties_create();
+
+	obs_properties_add_int(props, "channels",
+		obs_module_text("Channels"), 1, 8, 1);
+	obs_properties_add_bool(props, "startjack",
+		obs_module_text("StartJACKServer"));
+
+	return props;
+}
+
+struct obs_source_info jack_output_capture = {
+	.id             = "jack_output_capture",
+	.type           = OBS_SOURCE_TYPE_INPUT,
+	.output_flags   = OBS_SOURCE_AUDIO,
+	.get_name       = jack_input_getname,
+	.create         = jack_create,
+	.destroy        = jack_destroy,
+	.update         = jack_update,
+	.get_defaults   = jack_input_defaults,
+	.get_properties = jack_input_properties
+};