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-rw-r--r--src/output_init.c113
1 files changed, 113 insertions, 0 deletions
diff --git a/src/output_init.c b/src/output_init.c
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+++ b/src/output_init.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_control.h"
+#include "output_api.h"
+#include "output_list.h"
+#include "log.h"
+#include "audio.h"
+
+#define AUDIO_OUTPUT_TYPE "type"
+#define AUDIO_OUTPUT_NAME "name"
+#define AUDIO_OUTPUT_FORMAT "format"
+
+#define getBlockParam(name, str, force) { \
+ bp = getBlockParam(param, name); \
+ if(force && bp == NULL) { \
+ FATAL("couldn't find parameter \"%s\" in audio output " \
+ "definition beginning at %i\n", \
+ name, param->line); \
+ } \
+ if(bp) str = bp->value; \
+}
+
+int initAudioOutput(struct audio_output *ao, ConfigParam * param)
+{
+ const char *name = NULL;
+ char *format = NULL;
+ BlockParam *bp = NULL;
+ const struct audio_output_plugin *plugin = NULL;
+
+ if (param) {
+ const char *type = NULL;
+
+ getBlockParam(AUDIO_OUTPUT_NAME, name, 1);
+ getBlockParam(AUDIO_OUTPUT_TYPE, type, 1);
+ getBlockParam(AUDIO_OUTPUT_FORMAT, format, 0);
+
+ plugin = audio_output_plugin_get(type);
+ if (plugin == NULL) {
+ FATAL("couldn't find audio output plugin for type "
+ "\"%s\" at line %i\n", type, param->line);
+ }
+ } else {
+ unsigned i;
+
+ WARNING("No \"%s\" defined in config file\n",
+ CONF_AUDIO_OUTPUT);
+ WARNING("Attempt to detect audio output device\n");
+
+ audio_output_plugins_for_each(plugin, i) {
+ if (plugin->test_default_device) {
+ WARNING("Attempting to detect a %s audio "
+ "device\n", plugin->name);
+ if (plugin->test_default_device() == 0) {
+ WARNING("Successfully detected a %s "
+ "audio device\n", plugin->name);
+ break;
+ }
+ }
+ }
+
+ if (plugin == NULL) {
+ WARNING("Unable to detect an audio device\n");
+ return 0;
+ }
+
+ name = "default detected output";
+ }
+
+ ao->name = name;
+ ao->plugin = plugin;
+ ao->open = 0;
+
+ ao->convertAudioFormat = 0;
+ ao->sameInAndOutFormats = 0;
+ ao->convBuffer = NULL;
+ ao->convBufferLen = 0;
+
+ memset(&ao->inAudioFormat, 0, sizeof(ao->inAudioFormat));
+ memset(&ao->outAudioFormat, 0, sizeof(ao->outAudioFormat));
+ memset(&ao->reqAudioFormat, 0, sizeof(ao->reqAudioFormat));
+ memset(&ao->convState, 0, sizeof(ConvState));
+
+ if (format) {
+ ao->convertAudioFormat = 1;
+
+ if (0 != parseAudioConfig(&ao->reqAudioFormat, format)) {
+ FATAL("error parsing format at line %i\n", bp->line);
+ }
+
+ copyAudioFormat(&ao->outAudioFormat, &ao->reqAudioFormat);
+ }
+
+ if (plugin->init(ao, param) != 0)
+ return 0;
+
+ return 1;
+}