From 33aedc887acc4c52e140ba93df55f1825a2ebb10 Mon Sep 17 00:00:00 2001
From: Max Kellermann <max@duempel.org>
Date: Sun, 28 Jul 2013 12:50:37 +0200
Subject: decoder/wildmidi: convert to C++

---
 src/decoder/WildmidiDecoderPlugin.cxx | 155 ++++++++++++++++++++++++++++++++++
 1 file changed, 155 insertions(+)
 create mode 100644 src/decoder/WildmidiDecoderPlugin.cxx

(limited to 'src/decoder/WildmidiDecoderPlugin.cxx')

diff --git a/src/decoder/WildmidiDecoderPlugin.cxx b/src/decoder/WildmidiDecoderPlugin.cxx
new file mode 100644
index 000000000..28602e38a
--- /dev/null
+++ b/src/decoder/WildmidiDecoderPlugin.cxx
@@ -0,0 +1,155 @@
+/*
+ * 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 "WildmidiDecoderPlugin.hxx"
+#include "decoder_api.h"
+#include "tag_handler.h"
+#include "glib_compat.h"
+
+#include <glib.h>
+
+extern "C" {
+#include <wildmidi_lib.h>
+}
+
+#undef G_LOG_DOMAIN
+#define G_LOG_DOMAIN "wildmidi"
+
+static constexpr unsigned WILDMIDI_SAMPLE_RATE = 48000;
+
+static bool
+wildmidi_init(const struct config_param *param)
+{
+	const char *config_file;
+	int ret;
+
+	config_file = config_get_block_string(param, "config_file",
+					      "/etc/timidity/timidity.cfg");
+	if (!g_file_test(config_file, G_FILE_TEST_IS_REGULAR)) {
+		g_debug("configuration file does not exist: %s", config_file);
+		return false;
+	}
+
+	ret = WildMidi_Init(config_file, 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 = {
+		WILDMIDI_SAMPLE_RATE,
+		SAMPLE_FORMAT_S16,
+		2,
+	};
+	midi *wm;
+	const struct _WM_Info *info;
+	enum decoder_command cmd;
+
+	wm = WildMidi_Open(path_fs);
+	if (wm == nullptr)
+		return;
+
+	info = WildMidi_GetInfo(wm);
+	if (info == nullptr) {
+		WildMidi_Close(wm);
+		return;
+	}
+
+	decoder_initialized(decoder, &audio_format, true,
+			    info->approx_total_samples / WILDMIDI_SAMPLE_RATE);
+
+	do {
+		char buffer[4096];
+		int len;
+
+		info = WildMidi_GetInfo(wm);
+		if (info == nullptr)
+			break;
+
+		len = WildMidi_GetOutput(wm, buffer, sizeof(buffer));
+		if (len <= 0)
+			break;
+
+		cmd = decoder_data(decoder, nullptr, buffer, len, 0);
+
+		if (cmd == DECODE_COMMAND_SEEK) {
+			unsigned long seek_where = WILDMIDI_SAMPLE_RATE *
+				decoder_seek_where(decoder);
+
+#ifdef HAVE_WILDMIDI_SAMPLED_SEEK
+			WildMidi_SampledSeek(wm, &seek_where);
+#else
+			WildMidi_FastSeek(wm, &seek_where);
+#endif
+			decoder_command_finished(decoder);
+			cmd = DECODE_COMMAND_NONE;
+		}
+
+	} while (cmd == DECODE_COMMAND_NONE);
+
+	WildMidi_Close(wm);
+}
+
+static bool
+wildmidi_scan_file(const char *path_fs,
+		   const struct tag_handler *handler, void *handler_ctx)
+{
+	midi *wm = WildMidi_Open(path_fs);
+	if (wm == nullptr)
+		return false;
+
+	const struct _WM_Info *info = WildMidi_GetInfo(wm);
+	if (info == nullptr) {
+		WildMidi_Close(wm);
+		return false;
+	}
+
+	int duration = info->approx_total_samples / WILDMIDI_SAMPLE_RATE;
+	tag_handler_invoke_duration(handler, handler_ctx, duration);
+
+	WildMidi_Close(wm);
+
+	return true;
+}
+
+static const char *const wildmidi_suffixes[] = {
+	"mid",
+	nullptr
+};
+
+const struct decoder_plugin wildmidi_decoder_plugin = {
+	"wildmidi",
+	wildmidi_init,
+	wildmidi_finish,
+	nullptr,
+	wildmidi_file_decode,
+	wildmidi_scan_file,
+	nullptr,
+	nullptr,
+	wildmidi_suffixes,
+	nullptr,
+};
-- 
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