pulse: renamed source files

src/output/pulse_output_plugin.c

@@ -0,0 +1,183 @@
+/*
+ * Copyright (C) 2003-2009 The Music Player Daemon Project
+ * http://www.musicpd.org
+ *
+ * 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, write to the Free Software Foundation, Inc.,
+ * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+ */
+
+#include "output_api.h"
+#include "mixer_list.h"
+
+#include <glib.h>
+#include <pulse/simple.h>
+#include <pulse/error.h>
+
+#define MPD_PULSE_NAME "mpd"
+
+struct pulse_data {
+	const char *name;
+	const char *server;
+	const char *sink;
+
+	pa_simple *s;
+};
+
+/**
+ * The quark used for GError.domain.
+ */
+static inline GQuark
+pulse_output_quark(void)
+{
+	return g_quark_from_static_string("pulse_output");
+}
+
+static struct pulse_data *pulse_new_data(void)
+{
+	struct pulse_data *ret;
+
+	ret = g_new(struct pulse_data, 1);
+
+	ret->server = NULL;
+	ret->sink = NULL;
+
+	return ret;
+}
+
+static void pulse_free_data(struct pulse_data *pd)
+{
+	g_free(pd);
+}
+
+static void *
+pulse_init(G_GNUC_UNUSED const struct audio_format *audio_format,
+	   const struct config_param *param, G_GNUC_UNUSED GError **error)
+{
+	struct pulse_data *pd;
+
+	g_setenv("PULSE_PROP_media.role", "music", true);
+
+	pd = pulse_new_data();
+	pd->name = config_get_block_string(param, "name", "mpd_pulse");
+	pd->server = config_get_block_string(param, "server", NULL);
+	pd->sink = config_get_block_string(param, "sink", NULL);
+
+	return pd;
+}
+
+static void pulse_finish(void *data)
+{
+	struct pulse_data *pd = data;
+
+	pulse_free_data(pd);
+}
+
+static bool pulse_test_default_device(void)
+{
+	pa_simple *s;
+	pa_sample_spec ss;
+	int error;
+
+	ss.format = PA_SAMPLE_S16NE;
+	ss.rate = 44100;
+	ss.channels = 2;
+
+	s = pa_simple_new(NULL, MPD_PULSE_NAME, PA_STREAM_PLAYBACK, NULL,
+			  MPD_PULSE_NAME, &ss, NULL, NULL, &error);
+	if (!s) {
+		g_message("Cannot connect to default PulseAudio server: %s\n",
+			  pa_strerror(error));
+		return false;
+	}
+
+	pa_simple_free(s);
+
+	return true;
+}
+
+static bool
+pulse_open(void *data, struct audio_format *audio_format, GError **error_r)
+{
+	struct pulse_data *pd = data;
+	pa_sample_spec ss;
+	int error;
+
+	/* MPD doesn't support the other pulseaudio sample formats, so
+	   we just force MPD to send us everything as 16 bit */
+	audio_format->bits = 16;
+
+	ss.format = PA_SAMPLE_S16NE;
+	ss.rate = audio_format->sample_rate;
+	ss.channels = audio_format->channels;
+
+	pd->s = pa_simple_new(pd->server, MPD_PULSE_NAME, PA_STREAM_PLAYBACK,
+			      pd->sink, pd->name,
+			      &ss, NULL, NULL,
+			      &error);
+	if (!pd->s) {
+		g_set_error(error_r, pulse_output_quark(), error,
+			    "Cannot connect to PulseAudio server: %s",
+			    pa_strerror(error));
+		return false;
+	}
+
+	return true;
+}
+
+static void pulse_cancel(void *data)
+{
+	struct pulse_data *pd = data;
+	int error;
+
+	if (pa_simple_flush(pd->s, &error) < 0)
+		g_warning("Flush failed in PulseAudio output \"%s\": %s\n",
+			  pd->name, pa_strerror(error));
+}
+
+static void pulse_close(void *data)
+{
+	struct pulse_data *pd = data;
+
+	pa_simple_drain(pd->s, NULL);
+	pa_simple_free(pd->s);
+}
+
+static size_t
+pulse_play(void *data, const void *chunk, size_t size, GError **error_r)
+{
+	struct pulse_data *pd = data;
+	int error;
+
+	if (pa_simple_write(pd->s, chunk, size, &error) < 0) {
+		g_set_error(error_r, pulse_output_quark(), error,
+			    "%s", pa_strerror(error));
+		return 0;
+	}
+
+	return size;
+}
+
+const struct audio_output_plugin pulse_output_plugin = {
+	.name = "pulse",
+
+	.test_default_device = pulse_test_default_device,
+	.init = pulse_init,
+	.finish = pulse_finish,
+	.open = pulse_open,
+	.play = pulse_play,
+	.cancel = pulse_cancel,
+	.close = pulse_close,
+
+	.mixer_plugin = &pulse_mixer_plugin,
+};