decoder/mpg123: convert to C++

Makefile.am

@@ -504,7 +504,9 @@ libdecoder_plugins_a_SOURCES += \
 endif
 
 if HAVE_MPG123
-libdecoder_plugins_a_SOURCES += src/decoder/mpg123_decoder_plugin.c
+libdecoder_plugins_a_SOURCES += \
+	src/decoder/Mpg123DecoderPlugin.cxx \
+	src/decoder/Mpg123DecoderPlugin.hxx
 endif
 
 if HAVE_MPCDEC

src/DecoderList.cxx

@@ -36,12 +36,12 @@
 #include "decoder/FaadDecoderPlugin.hxx"
 #include "decoder/MadDecoderPlugin.hxx"
 #include "decoder/SndfileDecoderPlugin.hxx"
+#include "decoder/Mpg123DecoderPlugin.hxx"
 
 #include <glib.h>
 
 #include <string.h>
 
-extern const struct decoder_plugin mpg123_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;

src/decoder/mpg123_decoder_plugin.c → src/decoder/Mpg123DecoderPlugin.cxx

 /*
- * Copyright (C) 2003-2011 The Music Player Daemon Project
+ * 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
@@ -18,6 +18,7 @@
  */
 
 #include "config.h" /* must be first for large file support */
+#include "Mpg123DecoderPlugin.hxx"
 #include "decoder_api.h"
 #include "audio_check.h"
 #include "tag_handler.h"
@@ -57,7 +58,7 @@ static bool
 mpd_mpg123_open(mpg123_handle *handle, const char *path_fs,
 		struct audio_format *audio_format)
 {
-	GError *gerror = NULL;
+	GError *gerror = nullptr;
 	char *path_dup;
 	int error;
 	int channels, encoding;
@@ -111,8 +112,8 @@ mpd_mpg123_file_decode(struct decoder *decoder, const char *path_fs)
 
 	/* open the file */
 
-	handle = mpg123_new(NULL, &error);
-	if (handle == NULL) {
+	handle = mpg123_new(nullptr, &error);
+	if (handle == nullptr) {
 		g_warning("mpg123_new() failed: %s",
 			  mpg123_plain_strerror(error));
 		return;
@@ -172,7 +173,7 @@ mpd_mpg123_file_decode(struct decoder *decoder, const char *path_fs)
 
 		/* send to MPD */
 
-		cmd = decoder_data(decoder, NULL, buffer, nbytes, info.bitrate);
+		cmd = decoder_data(decoder, nullptr, buffer, nbytes, info.bitrate);
 
 		if (cmd == DECODE_COMMAND_SEEK) {
 			off_t c = decoder_seek_where(decoder)*audio_format.sample_rate;
@@ -202,8 +203,8 @@ mpd_mpg123_scan_file(const char *path_fs,
 	int error;
 	off_t num_samples;
 
-	handle = mpg123_new(NULL, &error);
-	if (handle == NULL) {
+	handle = mpg123_new(nullptr, &error);
+	if (handle == nullptr) {
 		g_warning("mpg123_new() failed: %s",
 			  mpg123_plain_strerror(error));
 		return false;
@@ -231,15 +232,19 @@ mpd_mpg123_scan_file(const char *path_fs,
 
 static const char *const mpg123_suffixes[] = {
 	"mp3",
-	NULL
+	nullptr
 };
 
 const struct decoder_plugin mpg123_decoder_plugin = {
-	.name = "mpg123",
-	.init = mpd_mpg123_init,
-	.finish = mpd_mpg123_finish,
-	.file_decode = mpd_mpg123_file_decode,
+	"mpg123",
+	mpd_mpg123_init,
+	mpd_mpg123_finish,
 	/* streaming not yet implemented */
-	.scan_file = mpd_mpg123_scan_file,
-	.suffixes = mpg123_suffixes,
+	nullptr,
+	mpd_mpg123_file_decode,
+	mpd_mpg123_scan_file,
+	nullptr,
+	nullptr,
+	mpg123_suffixes,
+	nullptr,
 };

src/decoder/Mpg123DecoderPlugin.hxx

+/*
+ * 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.
+ */
+
+#ifndef MPD_DECODER_MPG123_HXX
+#define MPD_DECODER_MPG123_HXX
+
+extern const struct decoder_plugin mpg123_decoder_plugin;
+
+#endif