add OS X configure stuff and added a skeleton audioOutput plugin for OS X

configure.ac

@@ -102,6 +102,13 @@ AP_maGiC_VALUE
 )
 fi
 
+enable_osx=no
+case $host in
+	*-darwin*)
+                AC_DEFINE(HAVE_OSX, 1, [Define for compiling OS X support])
+		enable_osx=yes ;;
+esac
+
 if test x$enable_ogg = xno; then
 	AC_MSG_WARN("disabling shout streaming support since vorbis was not found")
 fi
@@ -582,6 +589,12 @@ else
 	echo "Playing audio via ALSA ........disabled"
 fi
 
+if test x$enable_osx = xyes; then
+	echo "Playing audio on OS X .........enabled"
+else
+	echo "Playing audio on OS X .........disabled"
+fi
+
 if test x$enable_shout = xyes; then
 	echo "Streaming through shout .......enabled"
 else

src/Makefile.am

@@ -5,6 +5,7 @@ mpd_audioOutputs = \
 	audioOutputs/audioOutput_alsa.c \
 	audioOutputs/audioOutput_ao.c \
 	audioOutputs/audioOutput_oss.c \
+	audioOutputs/audioOutput_osx.c \
 	audioOutputs/audioOutput_shout.c
 
 mpd_inputPlugins = \

src/audio.c

@@ -59,6 +59,7 @@ int cmpAudioFormat(AudioFormat * f1, AudioFormat * f2) {
 extern AudioOutputPlugin alsaPlugin;
 extern AudioOutputPlugin aoPlugin;
 extern AudioOutputPlugin ossPlugin;
+extern AudioOutputPlugin osxPlugin;
 extern AudioOutputPlugin shoutPlugin;
 
 /* make sure initPlayerData is called before this function!! */
@@ -70,6 +71,7 @@ void initAudioDriver() {
 	loadAudioOutputPlugin(&alsaPlugin);
 	loadAudioOutputPlugin(&aoPlugin);
 	loadAudioOutputPlugin(&ossPlugin);
+	loadAudioOutputPlugin(&osxPlugin);
 	loadAudioOutputPlugin(&shoutPlugin);
 
 	pdAudioDevicesEnabled = (getPlayerData())->audioDeviceEnabled;

src/audioOutputs/audioOutput_osx.c

+/* the Music Player Daemon (MPD)
+ * (c)2003-2004 by Warren Dukes (shank@mercury.chem.pitt.edu)
+ * 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 "../audioOutput.h"
+
+#ifdef HAVE_OSX
+
+#include "../conf.h"
+#include "../log.h"
+
+#include <stdlib.h>
+
+typedef struct _OsxData {
+} OsxData;
+
+static OsxData * newOsxData() {
+	OsxData * ret = malloc(sizeof(OsxData));
+
+	return ret;
+}
+
+static int osx_initDriver(AudioOutput * audioOutput, ConfigParam * param) {
+	OsxData * od  = newOsxData();
+
+	audioOutput->data = od;
+
+	return 0;
+}
+
+static void freeOsxData(OsxData * od) {
+	free(od);
+}
+
+static void osx_finishDriver(AudioOutput * audioOutput) {
+	OsxData * od = (OsxData *)audioOutput->data;
+	freeOsxData(od);
+}
+
+static void osx_dropBufferedAudio(AudioOutput * audioOutput) {
+	/* not implemented yet */
+}
+
+static void osx_closeDevice(AudioOutput * audioOutput) {
+	//OsxData * od = (OsxData *) audioOutput->data;
+
+	audioOutput->open = 0;
+}
+
+static int osx_openDevice(AudioOutput * audioOutput) {
+	//OsxData * od = (OsxData *)audioOutput->data;
+
+	audioOutput->open = 1;
+
+	return 0;
+}
+
+
+static int osx_play(AudioOutput * audioOutput, char * playChunk, int size) {
+	//OsxData * od = (OsxData *)audioOutput->data;
+
+	return 0;
+}
+
+AudioOutputPlugin osxPlugin = 
+{
+	"osx",
+	NULL,
+	osx_initDriver,
+	osx_finishDriver,
+	osx_openDevice,
+	osx_play,
+	osx_dropBufferedAudio,
+	osx_closeDevice,
+	NULL /* sendMetadataFunc */
+};
+
+#else
+
+#include <stdio.h>
+
+AudioOutputPlugin osxPlugin = 
+{
+	NULL,
+	NULL,
+	NULL,
+	NULL,
+	NULL,
+	NULL,
+	NULL,
+	NULL,
+	NULL
+};
+
+#endif