Patch to make the configure flag for mpd-mad and mpd-libid3tag more logic (from ticho)

configure.ac

@@ -47,8 +47,9 @@ AC_ARG_ENABLE(audiofile,[  --disable-audiofile disable audiofile support, disabl
 AC_ARG_ENABLE(mod,[  --enable-mod     enable MOD support],enable_mod=yes,)
 AC_ARG_ENABLE(mpc,[  --disable-mpc     disable musepack (MPC) support],,enable_mpc=yes)
 AC_ARG_ENABLE(id3,[  --disable-id3     disable id3 support],,enable_id3=yes)
-AC_ARG_ENABLE(mpd_mad,[  --enable-mpd-mad     use mpd libmad],use_mpd_mad=yes,)
-AC_ARG_ENABLE(mpd_id3tag,[  --enable-mpd-id3tag    use mpd libid3tag],use_mpd_id3tag=yes,)
+
+AC_ARG_ENABLE(mpd_mad,[  --enable-mpd-mad     use mpd libmad],[use_mpd_mad=$enableval],[use_mpd_mad=no])
+AC_ARG_ENABLE(mpd_id3tag,[  --enable-mpd-id3tag    use mpd libid3tag],[use_mpd_id3tag=$enableval],[use_mpd_id3tag=no])
 
 AC_ARG_WITH(tremor,[[  --with-tremor[=PFX]   Use Tremor(vorbisidec) integer Ogg-Vorbis decoder (with optional prefix)]], use_tremor=yes; test x$withval != xyes && tremor_prefix="$withval",)
 AC_ARG_WITH(tremor-libraries,[  --with-tremor-libraries=DIR   Directory where Tremor library is installed (optional)], tremor_libraries="$withval", tremor_libraries="")

src/inputPlugins/aac_plugin.c

@@ -405,6 +405,9 @@ MpdTag * aacTagDup(char * file) {
 		if((ret = id3Dup(file))==NULL) ret = newMpdTag();
 		ret->time = time;
 	}
+	else {
+		DEBUG("aacTagDup: Failed to get total song time from: %s\n", file);
+	}
 
 	return ret;
 }

src/inputPlugins/audiofile_plugin.c

@@ -148,6 +148,9 @@ MpdTag * audiofileTagDup(char * file) {
 		if(!ret) ret = newMpdTag();
 		ret->time = time;
 	}
+	else {
+		DEBUG("audiofileTagDup: Failed to get total song time from: %s\n", file);
+	}
 
 	return ret;
 }

src/inputPlugins/flac_plugin.c

@@ -533,6 +533,19 @@ MpdTag * flacMetadataDup(char * file, int * vorbisCommentFound) {
 
 	it = FLAC__metadata_simple_iterator_new();
 	if(!FLAC__metadata_simple_iterator_init(it, file ,1,0)) {
+		switch(FLAC__metadata_simple_iterator_status(it)) {
+			case FLAC__METADATA_SIMPLE_ITERATOR_STATUS_ILLEGAL_INPUT:
+				DEBUG("flacMetadataDup: Reading '%s' metadata gave the following error: Illegal Input\n",file);
+				break;
+			case FLAC__METADATA_SIMPLE_ITERATOR_STATUS_ERROR_OPENING_FILE:
+				DEBUG("flacMetadataDup: Reading '%s' metadata gave the following error: Error Opening File\n",file);
+				break;
+			case FLAC__METADATA_SIMPLE_ITERATOR_STATUS_NOT_A_FLAC_FILE:
+				DEBUG("flacMetadataDup: Reading '%s' metadata gave the following error: Not A Flac File\n",file);
+				break;
+			default:
+				DEBUG("flacMetadataDup: Reading '%s' metadata failed\n",file);
+		}
 		FLAC__metadata_simple_iterator_delete(it);
 		return ret;
 	}
@@ -564,7 +577,10 @@ MpdTag * flacTagDup(char * file) {
 	int foundVorbisComment = 0;
 
 	ret = flacMetadataDup(file, &foundVorbisComment);
-	if(!ret) return NULL;
+	if(!ret) {
+		DEBUG("flacTagDup: Failed to grab information from: %s\n", file);
+		return NULL;
+	}
 	if(!foundVorbisComment) {
 		MpdTag * temp = id3Dup(file);
 		if(temp) {

src/inputPlugins/mod_plugin.c

@@ -212,10 +212,17 @@ MpdTag * modTagDup(char * file) {
 	MODULE * moduleHandle;
 	char * title;
 
-	if(mod_initMikMod() < 0) return NULL;
+	if(mod_initMikMod() < 0) {
+		DEBUG("modTagDup: Failed to initialize MikMod\n");
+		return NULL;
+	}
 
-	if(!(moduleHandle = Player_Load(file, 128, 0))) goto fail;
+	if(!(moduleHandle = Player_Load(file, 128, 0))) {
+		DEBUG("modTagDup: Failed to open file: %s\n",file);
+		MikMod_Exit();
+		return NULL;
 
+	}
 	Player_Free(moduleHandle);
 
 	ret = newMpdTag();
@@ -224,7 +231,6 @@ MpdTag * modTagDup(char * file) {
 	title = strdup(Player_LoadTitle(file));
 	if(title) addItemToMpdTag(ret, TAG_ITEM_TITLE, title);
 
-fail:
 	MikMod_Exit();
 
 	return ret;

src/inputPlugins/mp3_plugin.c

@@ -756,6 +756,9 @@ MpdTag * mp3_tagDup(char * file) {
 		if(!ret) ret = newMpdTag();
 		ret->time = time;
 	}
+	else {
+		DEBUG("mp3_tagDup: Failed to get total song time from: %s\n", file);
+	}
 
 	return ret;
 }

src/inputPlugins/mp4_plugin.c

@@ -326,7 +326,10 @@ MpdTag * mp4DataDup(char * file, int * mp4MetadataFound) {
 
 	*mp4MetadataFound = 0;
 	
-	if(openInputStream(&inStream, file) < 0) return NULL;
+	if(openInputStream(&inStream, file) < 0) {
+		DEBUG("mp4DataDup: Failed to open file: %s\n", file);
+		return NULL;
+	}
 
 	cb = malloc(sizeof(mp4ff_callback_t));
 	cb->read = mp4_inputStreamReadCallback;

src/inputPlugins/mpc_plugin.c

@@ -294,7 +294,10 @@ static float mpcGetTime(char * file) {
 
 	mpc_streaminfo_init(&info);
 
-	if(openInputStream(&inStream, file) < 0) return -1;
+	if(openInputStream(&inStream, file) < 0) {
+		DEBUG("mpcGetTime: Failed to open file: %s\n", file);
+		return -1;
+	}
 	
 	if(mpc_streaminfo_read(&info, &reader) != ERROR_CODE_OK) {
 		closeInputStream(&inStream);
@@ -312,7 +315,10 @@ static MpdTag * mpcTagDup(char * file) {
 	MpdTag * ret = NULL;
 	float time = mpcGetTime(file);
 
-	if(time < 0) return NULL;
+	if(time < 0) {
+		DEBUG("mpcTagDup: Failed to get Songlength of file: %s\n",file);
+	 	return NULL;
+	}
 
 	ret = apeDup(file);
 	if(!ret) ret = id3Dup(file);

src/inputPlugins/ogg_plugin.c

@@ -366,7 +366,11 @@ MpdTag * oggTagDup(char * file) {
 	OggVorbis_File vf;
 
 	fp = fopen(file,"r"); 
-	if(!fp) return NULL;
+	if(!fp)
+	{
+		DEBUG("oggTagDup: Failed to open file: '%s', %s\n", file, strerror(errno));
+		 return NULL;
+	}
 	if(ov_open(fp,&vf,NULL,0)<0) {
 		fclose(fp);
 		return NULL;

src/ls.c

@@ -30,6 +30,8 @@
 #include <stdio.h>
 #include <string.h>
 #include <stdlib.h>
+#include <errno.h>
+extern int errno;
 
 char * dupAndStripPlaylistSuffix(char * file) {
 	size_t size = strlen(file)-strlen(PLAYLIST_FILE_SUFFIX)-1;
@@ -210,7 +212,14 @@ int isFile(char * utf8file, time_t * mtime) {
 			if(mtime) *mtime = st.st_mtime;
 			return 1;
 		}
-		else return 0;
+		else
+		{
+		 DEBUG("isFile: %s is not a regular file\n",utf8file);
+		 return 0;
+		}
+	}
+	else {
+		DEBUG("isFile: failed to stat: %s: %s\n", utf8file, strerror(errno));
 	}
 
 	return 0;
@@ -257,15 +266,24 @@ InputPlugin * hasMusicSuffix(char * utf8file) {
         InputPlugin * ret = NULL;
         
         char * s = getSuffix(utf8file);
-        if(s) ret = getInputPluginFromSuffix(s);
+        if(s) {
+		 ret = getInputPluginFromSuffix(s);
+	}	
+	else {
+		DEBUG("hasMusicSuffix: The file: %s has no valid suffix\n",utf8file);
+	}
 
 	return ret;
 }
 
 InputPlugin * isMusic(char * utf8file, time_t * mtime) {
 	if(isFile(utf8file,mtime)) {
-		return hasMusicSuffix(utf8file);
+		InputPlugin *plugin = hasMusicSuffix(utf8file);
+		if (plugin == NULL) {
+			DEBUG("isMusic: %s is not a supported music file\n");
+		}
+		return plugin;
 	}
-
+	DEBUG("isMusic: %s is not a valid file\n",utf8file);
 	return NULL;
 }

src/song.c

@@ -49,7 +49,10 @@ Song * newNullSong() {
 Song * newSong(char * url, int type, Directory * parentDir) {
 	Song * song = NULL;
 
-        if(strchr(url, '\n')) return NULL;
+        if(strchr(url, '\n')) {
+		DEBUG("newSong: '%s' is not a valid uri\n");
+		return NULL;
+	}
 
         song  = newNullSong();
 
@@ -104,6 +107,8 @@ Song * addSongToList(SongList * list, char * url, char * utf8path,
 	case SONG_TYPE_URL:
 		song = newSong(url, songType, parentDirectory);
 		break;
+	default:
+		DEBUG("addSongToList: Trying to add an invalid song type\n"); 
 	}
 
 	if(song==NULL) return NULL;

src/tag.c

@@ -185,6 +185,7 @@ MpdTag * id3Dup(char * file) {
 	id3_file = id3_file_open(file, ID3_FILE_MODE_READONLY);
 			
 	if(!id3_file) {
+		DEBUG("id3Dup: Failed to open file: '%s', %s\n",file, strerror(errno));
 		return NULL;
 	}