add new replaygain module

src/plugin_common/Makefile.am

@@ -27,11 +27,13 @@ noinst_HEADERS = \
 	defs.h \
 	dither.h \
 	locale_hack.h \
+	replaygain.h \
 	tags.h
 
 libplugin_common_la_SOURCES = \
 	charset.c \
 	dither.c \
+	replaygain.c \
 	tags.c
 
 EXTRA_DIST = \

src/plugin_common/Makefile.lite

@@ -28,6 +28,7 @@ DEFINES  =
 SRCS_C = \
 	charset.c \
 	dither.c \
+	replaygain.c \
 	tags.c
 
 include $(topdir)/build/lib.mk

src/plugin_common/plugin_common_static.dsp

@@ -93,6 +93,10 @@ SOURCE=.\dither.c
 # End Source File
 # Begin Source File
 
+SOURCE=.\replaygain.c
+# End Source File
+# Begin Source File
+
 SOURCE=.\tags.c
 # End Source File
 # End Group
@@ -117,6 +121,10 @@ SOURCE=.\locale_hack.h
 # End Source File
 # Begin Source File
 
+SOURCE=.\replaygain.h
+# End Source File
+# Begin Source File
+
 SOURCE=.\tags.h
 # End Source File
 # End Group

src/plugin_common/replaygain.c

+/* plugin_common - Routines common to several plugins
+ * Copyright (C) 2002,2003  Josh Coalson
+ * Copyright (C) 2003  Philip Jgenstedt
+ *
+ * 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 "replaygain.h"
+#include "FLAC/ordinals.h"
+#include "FLAC/metadata.h"
+#include "share/grabbag.h"
+
+void FLAC_plugin__replaygain_get_from_file(const char *filename,
+                                           double *track_gain, FLAC__bool *track_gain_set,
+                                           double *album_gain, FLAC__bool *album_gain_set,
+                                           double *track_peak, FLAC__bool *track_peak_set,
+                                           double *album_peak, FLAC__bool *album_peak_set)
+{
+	*track_gain_set = *album_gain_set = *track_peak_set = *album_peak_set = false;
+
+	/* Largely stolen from vorbiscomment.c and the other replaygain.c  */
+	FLAC__Metadata_SimpleIterator *iterator = FLAC__metadata_simple_iterator_new();
+	if(0 != iterator) {
+		if(FLAC__metadata_simple_iterator_init(iterator, filename, /*read_only=*/true, /*preserve_file_stats=*/true)) {
+			FLAC__bool got_vorbis_comments = false;
+			do {
+				if(FLAC__metadata_simple_iterator_get_block_type(iterator) == FLAC__METADATA_TYPE_VORBIS_COMMENT) {
+					FLAC__StreamMetadata *block = FLAC__metadata_simple_iterator_get_block(iterator);
+					if(0 != block) {
+						if(grabbag__replaygain_load_from_vorbiscomment(block, /*album_mode=*/false, /*strict=*/true, track_gain, track_peak)) {
+							*track_gain_set = *track_peak_set = true;
+						}
+						if(grabbag__replaygain_load_from_vorbiscomment(block, /*album_mode=*/true, /*strict=*/true, album_gain, album_peak)) {
+							*album_gain_set = *album_peak_set = true;
+						}
+						FLAC__metadata_object_delete(block);
+						got_vorbis_comments = true;
+					}
+				}
+			} while (!got_vorbis_comments && FLAC__metadata_simple_iterator_next(iterator));
+		}
+		FLAC__metadata_simple_iterator_delete(iterator);
+	}
+	return;
+}

src/plugin_common/replaygain.h

+/* plugin_common - Routines common to several plugins
+ * Copyright (C) 2002,2003  Josh Coalson
+ * Copyright (C) 2003  Philip Jgenstedt
+ *
+ * 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.
+ */
+
+#ifndef FLAC__PLUGIN_COMMON__REPLAYGAIN_H
+#define FLAC__PLUGIN_COMMON__REPLAYGAIN_H
+
+#include "FLAC/ordinals.h"
+
+void FLAC_plugin__replaygain_get_from_file(const char *filename,
+                                           double *track_gain, FLAC__bool *track_gain_set,
+                                           double *album_gain, FLAC__bool *album_gain_set,
+                                           double *track_peak, FLAC__bool *track_peak_set,
+                                           double *album_peak, FLAC__bool *album_peak_set);
+
+#endif