solaris: new audio output plugin for Solaris /dev/audio

Makefile.am

@@ -519,6 +519,10 @@ OUTPUT_SRC += \
 	src/output/httpd_output_plugin.c
 endif
 
+if ENABLE_SOLARIS_OUTPUT
+OUTPUT_SRC += src/output/solaris_output_plugin.c
+endif
+
 
 #
 # Sparse code analysis

NEWS

@@ -30,6 +30,7 @@ ver 0.15 - (200?/??/??)
   - mvp: fixed default device detection
   - pipe: new audio output plugin which runs a command
   - alsa: better period_time default value for high sample rates
+  - solaris: new audio output plugin for Solaris /dev/audio
 * commands:
   - "playlistinfo" supports a range now
   - added "sticker database", command "sticker", which allows clients

configure.ac

@@ -594,6 +594,20 @@ if test x$enable_shout = xyes; then
 		enable_shout=no)
 fi
 
+case "$host_os" in
+	solaris*)
+		AC_DEFINE(ENABLE_SOLARIS_OUTPUT, 1, [Define to enable Solaris /dev/audio support])
+		enable_solaris_output=yes
+		;;
+
+	*)
+		enable_solaris_output=no
+		;;
+esac
+echo "HOST_OS=$host_os"
+
+AM_CONDITIONAL(ENABLE_SOLARIS_OUTPUT, test x$enable_solaris_output = xyes)
+
 if test x$enable_oggvorbis_encoder = xyes; then
 	if test x$enable_oggvorbis = xno; then
 		AC_MSG_WARN([disabling ogg shout streaming support because vorbis is not enabled])
@@ -1144,6 +1158,12 @@ else
 	echo " SHOUTcast support .............disabled"
 fi
 
+if test x$enable_solaris_output = xyes; then
+	echo " Solaris /dev/audio support ....enabled"
+else
+	echo " Solaris /dev/audio support ....disabled"
+fi
+
 echo ""
 
 if
@@ -1151,6 +1171,7 @@ if
 	test x$enable_oss = xno &&
 	test x$enable_shout = xno &&
 	test x$enable_httpd_output = xno &&
+	test x$enable_solaris_output = xno &&
 	test x$enable_alsa = xno &&
 	test x$enable_osx = xno &&
 	test x$enable_pulse = xno &&

doc/user.xml

@@ -424,6 +424,38 @@ cd mpd-0.14.2</programlisting>
           or IceCast server.  It forwards tags to this server.
         </para>
       </section>
+
+      <section>
+        <title><varname>solaris</varname></title>
+
+        <para>
+          The "Solaris" plugin runs only on SUN Solaris, and plays via
+          <filename>/dev/audio</filename>.
+        </para>
+
+        <informaltable>
+          <tgroup cols="2">
+            <thead>
+              <row>
+                <entry>Setting</entry>
+                <entry>Description</entry>
+              </row>
+            </thead>
+            <tbody>
+              <row>
+                <entry>
+                  <varname>device</varname>
+                  <parameter>PATH</parameter>
+                </entry>
+                <entry>
+                  Sets the path of the audio device, defaults to
+                  <filename>/dev/audio</filename>.
+                </entry>
+              </row>
+            </tbody>
+          </tgroup>
+        </informaltable>
+      </section>
     </section>
   </chapter>
 </book>

src/output/solaris_output_plugin.c

@@ -0,0 +1,175 @@
+/*
+ * 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 <glib.h>
+
+#include <sys/audio.h>
+#include <sys/stropts.h>
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <unistd.h>
+#include <fcntl.h>
+#include <errno.h>
+
+#undef G_LOG_DOMAIN
+#define G_LOG_DOMAIN "solaris_output"
+
+struct solaris_output {
+	/* configuration */
+	const char *device;
+
+	int fd;
+};
+
+/**
+ * The quark used for GError.domain.
+ */
+static inline GQuark
+solaris_output_quark(void)
+{
+	return g_quark_from_static_string("solaris_output");
+}
+
+static bool
+solaris_output_test_default_device(void)
+{
+	struct stat st;
+
+	return stat("/dev/audio", &st) == 0 && S_ISCHR(st.st_mode) &&
+		access("/dev/audio", W_OK) == 0;
+}
+
+static void *
+solaris_output_init(G_GNUC_UNUSED const struct audio_format *audio_format,
+		    const struct config_param *param,
+		    G_GNUC_UNUSED GError **error)
+{
+	struct solaris_output *so = g_new(struct solaris_output, 1);
+
+	so->device = config_get_block_string(param, "device", "/dev/audio");
+
+	return so;
+}
+
+static void
+solaris_output_finish(void *data)
+{
+	struct solaris_output *so = data;
+
+	g_free(so);
+}
+
+static bool
+solaris_output_open(void *data, struct audio_format *audio_format,
+		    GError **error)
+{
+	struct solaris_output *so = data;
+	struct audio_info info;
+	int ret, flags;
+
+	/* support only 16 bit mono/stereo for now; nothing else has
+	   been tested */
+	audio_format->bits = 16;
+
+	/* open the device in non-blocking mode */
+
+	so->fd = open(so->device, O_WRONLY|O_NONBLOCK);
+	if (so->fd < 0) {
+		g_set_error(error, solaris_output_quark(), errno,
+			    "Failed to open %s: %s",
+			    so->device, g_strerror(errno));
+		return false;
+	}
+
+	/* restore blocking mode */
+
+	flags = fcntl(so->fd, F_GETFL);
+	if (flags > 0 && (flags & O_NONBLOCK) != 0)
+		fcntl(so->fd, F_SETFL, flags & ~O_NONBLOCK);
+
+	/* configure the audio device */
+
+	ret = ioctl(so->fd, AUDIO_GETINFO, &info);
+	if (ret < 0) {
+		g_set_error(error, solaris_output_quark(), errno,
+			    "AUDIO_GETINFO failed: %s", g_strerror(errno));
+		close(so->fd);
+		return false;
+	}
+
+	info.play.sample_rate = audio_format->sample_rate;
+	info.play.channels = audio_format->channels;
+	info.play.precision = audio_format->bits;
+	info.play.encoding = AUDIO_ENCODING_LINEAR;
+
+	ret = ioctl(so->fd, AUDIO_SETINFO, &info);
+	if (ret < 0) {
+		g_set_error(error, solaris_output_quark(), errno,
+			    "AUDIO_SETINFO failed: %s", g_strerror(errno));
+		close(so->fd);
+		return false;
+	}
+
+	return true;
+}
+
+static void
+solaris_output_close(void *data)
+{
+	struct solaris_output *so = data;
+
+	close(so->fd);
+}
+
+static size_t
+solaris_output_play(void *data, const void *chunk, size_t size, GError **error)
+{
+	struct solaris_output *so = data;
+	ssize_t nbytes;
+
+	nbytes = write(so->fd, chunk, size);
+	if (nbytes <= 0) {
+		g_set_error(error, solaris_output_quark(), errno,
+			    "Write failed: %s", g_strerror(errno));
+		return 0;
+	}
+
+	return nbytes;
+}
+
+static void
+solaris_output_cancel(void *data)
+{
+	struct solaris_output *so = data;
+
+	ioctl(so->fd, I_FLUSH);
+}
+
+const struct audio_output_plugin solaris_output_plugin = {
+	.name = "solaris",
+	.test_default_device = solaris_output_test_default_device,
+	.init = solaris_output_init,
+	.finish = solaris_output_finish,
+	.open = solaris_output_open,
+	.close = solaris_output_close,
+	.play = solaris_output_play,
+	.cancel = solaris_output_cancel,
+};

src/output_list.c

@@ -29,6 +29,7 @@ extern const struct audio_output_plugin alsaPlugin;
 extern const struct audio_output_plugin ao_output_plugin;
 extern const struct audio_output_plugin oss_output_plugin;
 extern const struct audio_output_plugin osxPlugin;
+extern const struct audio_output_plugin solaris_output_plugin;
 extern const struct audio_output_plugin pulse_plugin;
 extern const struct audio_output_plugin mvp_output_plugin;
 extern const struct audio_output_plugin jackPlugin;
@@ -57,6 +58,9 @@ const struct audio_output_plugin *audio_output_plugins[] = {
 #ifdef HAVE_OSX
 	&osxPlugin,
 #endif
+#ifdef ENABLE_SOLARIS_OUTPUT
+	&solaris_output_plugin,
+#endif
 #ifdef HAVE_PULSE
 	&pulse_plugin,
 #endif