decoder_list: convert to C++

1 files changed, 237 insertions, 0 deletions

diff --git a/src/DecoderList.cxx b/src/DecoderList.cxx
new file mode 100644
index 00000000..da9c3fcc
--- /dev/null
+++ b/src/DecoderList.cxx
@@ -0,0 +1,237 @@
+/*
+ * Copyright (C) 2003-2013 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 "config.h"
+#include "DecoderList.hxx"
+#include "decoder_plugin.h"
+#include "conf.h"
+#include "mpd_error.h"
+#include "decoder/pcm_decoder_plugin.h"
+#include "decoder/dsdiff_decoder_plugin.h"
+#include "decoder/dsf_decoder_plugin.h"
+#include "decoder/FLACDecoderPlugin.h"
+#include "decoder/OpusDecoderPlugin.h"
+#include "decoder/VorbisDecoderPlugin.h"
+#include "decoder/AdPlugDecoderPlugin.h"
+#include "decoder/WavpackDecoderPlugin.hxx"
+#include "decoder/FfmpegDecoderPlugin.hxx"
+
+#include <glib.h>
+
+#include <string.h>
+
+extern const struct decoder_plugin mad_decoder_plugin;
+extern const struct decoder_plugin mpg123_decoder_plugin;
+extern const struct decoder_plugin sndfile_decoder_plugin;
+extern const struct decoder_plugin audiofile_decoder_plugin;
+extern const struct decoder_plugin faad_decoder_plugin;
+extern const struct decoder_plugin mpcdec_decoder_plugin;
+extern const struct decoder_plugin modplug_decoder_plugin;
+extern const struct decoder_plugin mikmod_decoder_plugin;
+extern const struct decoder_plugin sidplay_decoder_plugin;
+extern const struct decoder_plugin wildmidi_decoder_plugin;
+extern const struct decoder_plugin fluidsynth_decoder_plugin;
+extern const struct decoder_plugin gme_decoder_plugin;
+
+const struct decoder_plugin *const decoder_plugins[] = {
+#ifdef HAVE_MAD
+	&mad_decoder_plugin,
+#endif
+#ifdef HAVE_MPG123
+	&mpg123_decoder_plugin,
+#endif
+#ifdef ENABLE_VORBIS_DECODER
+	&vorbis_decoder_plugin,
+#endif
+#if defined(HAVE_FLAC)
+	&oggflac_decoder_plugin,
+#endif
+#ifdef HAVE_FLAC
+	&flac_decoder_plugin,
+#endif
+#ifdef HAVE_OPUS
+	&opus_decoder_plugin,
+#endif
+#ifdef ENABLE_SNDFILE
+	&sndfile_decoder_plugin,
+#endif
+#ifdef HAVE_AUDIOFILE
+	&audiofile_decoder_plugin,
+#endif
+	&dsdiff_decoder_plugin,
+	&dsf_decoder_plugin,
+#ifdef HAVE_FAAD
+	&faad_decoder_plugin,
+#endif
+#ifdef HAVE_MPCDEC
+	&mpcdec_decoder_plugin,
+#endif
+#ifdef HAVE_WAVPACK
+	&wavpack_decoder_plugin,
+#endif
+#ifdef HAVE_MODPLUG
+	&modplug_decoder_plugin,
+#endif
+#ifdef ENABLE_MIKMOD_DECODER
+	&mikmod_decoder_plugin,
+#endif
+#ifdef ENABLE_SIDPLAY
+	&sidplay_decoder_plugin,
+#endif
+#ifdef ENABLE_WILDMIDI
+	&wildmidi_decoder_plugin,
+#endif
+#ifdef ENABLE_FLUIDSYNTH
+	&fluidsynth_decoder_plugin,
+#endif
+#ifdef HAVE_ADPLUG
+	&adplug_decoder_plugin,
+#endif
+#ifdef HAVE_FFMPEG
+	&ffmpeg_decoder_plugin,
+#endif
+#ifdef HAVE_GME
+	&gme_decoder_plugin,
+#endif
+	&pcm_decoder_plugin,
+	NULL
+};
+
+enum {
+	num_decoder_plugins = G_N_ELEMENTS(decoder_plugins) - 1,
+};
+
+/** which plugins have been initialized successfully? */
+bool decoder_plugins_enabled[num_decoder_plugins];
+
+static unsigned
+decoder_plugin_index(const struct decoder_plugin *plugin)
+{
+	unsigned i = 0;
+
+	while (decoder_plugins[i] != plugin)
+		++i;
+
+	return i;
+}
+
+static unsigned
+decoder_plugin_next_index(const struct decoder_plugin *plugin)
+{
+	return plugin == 0
+		? 0 /* start with first plugin */
+		: decoder_plugin_index(plugin) + 1;
+}
+
+const struct decoder_plugin *
+decoder_plugin_from_suffix(const char *suffix,
+			   const struct decoder_plugin *plugin)
+{
+	if (suffix == NULL)
+		return NULL;
+
+	for (unsigned i = decoder_plugin_next_index(plugin);
+	     decoder_plugins[i] != NULL; ++i) {
+		plugin = decoder_plugins[i];
+		if (decoder_plugins_enabled[i] &&
+		    decoder_plugin_supports_suffix(plugin, suffix))
+			return plugin;
+	}
+
+	return NULL;
+}
+
+const struct decoder_plugin *
+decoder_plugin_from_mime_type(const char *mimeType, unsigned int next)
+{
+	static unsigned i = num_decoder_plugins;
+
+	if (mimeType == NULL)
+		return NULL;
+
+	if (!next)
+		i = 0;
+	for (; decoder_plugins[i] != NULL; ++i) {
+		const struct decoder_plugin *plugin = decoder_plugins[i];
+		if (decoder_plugins_enabled[i] &&
+		    decoder_plugin_supports_mime_type(plugin, mimeType)) {
+			++i;
+			return plugin;
+		}
+	}
+
+	return NULL;
+}
+
+const struct decoder_plugin *
+decoder_plugin_from_name(const char *name)
+{
+	decoder_plugins_for_each_enabled(plugin)
+		if (strcmp(plugin->name, name) == 0)
+			return plugin;
+
+	return NULL;
+}
+
+/**
+ * Find the "decoder" configuration block for the specified plugin.
+ *
+ * @param plugin_name the name of the decoder plugin
+ * @return the configuration block, or NULL if none was configured
+ */
+static const struct config_param *
+decoder_plugin_config(const char *plugin_name)
+{
+	const struct config_param *param = NULL;
+
+	while ((param = config_get_next_param(CONF_DECODER, param)) != NULL) {
+		const char *name =
+			config_get_block_string(param, "plugin", NULL);
+		if (name == NULL)
+			MPD_ERROR("decoder configuration without 'plugin' name in line %d",
+				  param->line);
+
+		if (strcmp(name, plugin_name) == 0)
+			return param;
+	}
+
+	return NULL;
+}
+
+void decoder_plugin_init_all(void)
+{
+	for (unsigned i = 0; decoder_plugins[i] != NULL; ++i) {
+		const struct decoder_plugin *plugin = decoder_plugins[i];
+		const struct config_param *param =
+			decoder_plugin_config(plugin->name);
+
+		if (!config_get_block_bool(param, "enabled", true))
+			/* the plugin is disabled in mpd.conf */
+			continue;
+
+		if (decoder_plugin_init(plugin, param))
+			decoder_plugins_enabled[i] = true;
+	}
+}
+
+void decoder_plugin_deinit_all(void)
+{
+	decoder_plugins_for_each_enabled(plugin)
+		decoder_plugin_finish(plugin);
+}