wildmidi: new decoder plugin for MIDI files

src/decoder/wildmidi_plugin.c

@@ -0,0 +1,102 @@
+/*
+ * 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., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ */
+
+#include "../decoder_api.h"
+
+#include <glib.h>
+
+#include <wildmidi_lib.h>
+
+#undef G_LOG_DOMAIN
+#define G_LOG_DOMAIN "wildmidi"
+
+enum {
+	WILDMIDI_SAMPLE_RATE = 48000,
+};
+
+static bool
+wildmidi_init(void)
+{
+	int ret;
+
+	ret = WildMidi_Init("/etc/timidity/timidity.cfg",
+			    WILDMIDI_SAMPLE_RATE, 0);
+	return ret == 0;
+}
+
+static void
+wildmidi_finish(void)
+{
+	WildMidi_Shutdown();
+}
+
+static void
+wildmidi_file_decode(struct decoder *decoder, const char *path_fs)
+{
+	static const struct audio_format audio_format = {
+		.sample_rate = WILDMIDI_SAMPLE_RATE,
+		.bits = 16,
+		.channels = 2,
+	};
+	midi *wm;
+	enum decoder_command cmd;
+
+	wm = WildMidi_Open(path_fs);
+	if (wm == NULL)
+		return;
+
+	decoder_initialized(decoder, &audio_format, false, -1);
+
+	do {
+		char buffer[4096];
+		int len;
+
+		len = WildMidi_GetOutput(wm, buffer, sizeof(buffer));
+		if (len <= 0)
+			break;
+
+		cmd = decoder_data(decoder, NULL, buffer, len, 0, 0, NULL);
+	} while (cmd == DECODE_COMMAND_NONE);
+
+	WildMidi_Close(wm);
+}
+
+static struct tag *
+wildmidi_tag_dup(const char *path_fs)
+{
+	struct tag *tag = tag_new();
+
+	/* to be implemented */
+	(void)path_fs;
+
+	return tag;
+}
+
+static const char *const wildmidi_suffixes[] = {
+	"mid",
+	NULL
+};
+
+const struct decoder_plugin wildmidi_decoder_plugin = {
+	.name = "wildmidi",
+	.init = wildmidi_init,
+	.finish = wildmidi_finish,
+	.file_decode = wildmidi_file_decode,
+	.tag_dup = wildmidi_tag_dup,
+	.suffixes = wildmidi_suffixes,
+};