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-rw-r--r--src/output/pulse_plugin.c218
1 files changed, 218 insertions, 0 deletions
diff --git a/src/output/pulse_plugin.c b/src/output/pulse_plugin.c
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--- /dev/null
+++ b/src/output/pulse_plugin.c
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+/* the Music Player Daemon (MPD)
+ * Copyright (C) 2003-2007 by Warren Dukes (warren.dukes@gmail.com)
+ * This project's homepage is: 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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ */
+
+#include "../output_api.h"
+
+#ifdef HAVE_PULSE
+
+#include "../utils.h"
+#include "../log.h"
+
+#include <pulse/simple.h>
+#include <pulse/error.h>
+
+#define MPD_PULSE_NAME "mpd"
+#define CONN_ATTEMPT_INTERVAL 60
+
+typedef struct _PulseData {
+ struct audio_output *ao;
+
+ pa_simple *s;
+ char *server;
+ char *sink;
+ int connAttempts;
+ time_t lastAttempt;
+} PulseData;
+
+static PulseData *newPulseData(void)
+{
+ PulseData *ret;
+
+ ret = xmalloc(sizeof(PulseData));
+
+ ret->s = NULL;
+ ret->server = NULL;
+ ret->sink = NULL;
+ ret->connAttempts = 0;
+ ret->lastAttempt = 0;
+
+ return ret;
+}
+
+static void freePulseData(PulseData * pd)
+{
+ if (pd->server)
+ free(pd->server);
+ if (pd->sink)
+ free(pd->sink);
+ free(pd);
+}
+
+static void *pulse_initDriver(struct audio_output *ao,
+ mpd_unused const struct audio_format *audio_format,
+ ConfigParam * param)
+{
+ BlockParam *server = NULL;
+ BlockParam *sink = NULL;
+ PulseData *pd;
+
+ if (param) {
+ server = getBlockParam(param, "server");
+ sink = getBlockParam(param, "sink");
+ }
+
+ pd = newPulseData();
+ pd->ao = ao;
+ pd->server = server ? xstrdup(server->value) : NULL;
+ pd->sink = sink ? xstrdup(sink->value) : NULL;
+
+ return pd;
+}
+
+static void pulse_finishDriver(void *data)
+{
+ PulseData *pd = data;
+
+ freePulseData(pd);
+}
+
+static int pulse_testDefault(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) {
+ WARNING("Cannot connect to default PulseAudio server: %s\n",
+ pa_strerror(error));
+ return -1;
+ }
+
+ pa_simple_free(s);
+
+ return 0;
+}
+
+static int pulse_openDevice(void *data,
+ struct audio_format *audioFormat)
+{
+ PulseData *pd = data;
+ pa_sample_spec ss;
+ time_t t;
+ int error;
+
+ t = time(NULL);
+
+ if (pd->connAttempts != 0 &&
+ (t - pd->lastAttempt) < CONN_ATTEMPT_INTERVAL)
+ return -1;
+
+ pd->connAttempts++;
+ pd->lastAttempt = t;
+
+ /* MPD doesn't support the other pulseaudio sample formats, so
+ we just force MPD to send us everything as 16 bit */
+ audioFormat->bits = 16;
+
+ ss.format = PA_SAMPLE_S16NE;
+ ss.rate = audioFormat->sample_rate;
+ ss.channels = audioFormat->channels;
+
+ pd->s = pa_simple_new(pd->server, MPD_PULSE_NAME, PA_STREAM_PLAYBACK,
+ pd->sink, audio_output_get_name(pd->ao),
+ &ss, NULL, NULL,
+ &error);
+ if (!pd->s) {
+ ERROR("Cannot connect to server in PulseAudio output "
+ "\"%s\" (attempt %i): %s\n",
+ audio_output_get_name(pd->ao),
+ pd->connAttempts, pa_strerror(error));
+ return -1;
+ }
+
+ pd->connAttempts = 0;
+
+ DEBUG("PulseAudio output \"%s\" connected and playing %i bit, %i "
+ "channel audio at %i Hz\n",
+ audio_output_get_name(pd->ao),
+ audioFormat->bits,
+ audioFormat->channels, audioFormat->sample_rate);
+
+ return 0;
+}
+
+static void pulse_dropBufferedAudio(void *data)
+{
+ PulseData *pd = data;
+ int error;
+
+ if (pa_simple_flush(pd->s, &error) < 0)
+ WARNING("Flush failed in PulseAudio output \"%s\": %s\n",
+ audio_output_get_name(pd->ao),
+ pa_strerror(error));
+}
+
+static void pulse_closeDevice(void *data)
+{
+ PulseData *pd = data;
+
+ if (pd->s) {
+ pa_simple_drain(pd->s, NULL);
+ pa_simple_free(pd->s);
+ }
+}
+
+static int pulse_playAudio(void *data,
+ const char *playChunk, size_t size)
+{
+ PulseData *pd = data;
+ int error;
+
+ if (pa_simple_write(pd->s, playChunk, size, &error) < 0) {
+ ERROR("PulseAudio output \"%s\" disconnecting due to write "
+ "error: %s\n",
+ audio_output_get_name(pd->ao),
+ pa_strerror(error));
+ pulse_closeDevice(pd);
+ return -1;
+ }
+
+ return 0;
+}
+
+const struct audio_output_plugin pulsePlugin = {
+ .name = "pulse",
+ .test_default_device = pulse_testDefault,
+ .init = pulse_initDriver,
+ .finish = pulse_finishDriver,
+ .open = pulse_openDevice,
+ .play = pulse_playAudio,
+ .cancel = pulse_dropBufferedAudio,
+ .close = pulse_closeDevice,
+};
+
+#else /* HAVE_PULSE */
+
+DISABLED_AUDIO_OUTPUT_PLUGIN(pulsePlugin)
+#endif /* HAVE_PULSE */