Adding of plchangesposid command, this is a stripped down version of the plchanges command, it only sends the pos and id of the changed command. Libmpd allready has support for it, and libmpdclient in libmpd too

git-svn-id: https://svn.musicpd.org/mpd/trunk@4101 09075e82-0dd4-0310-85a5-a0d7c8717e4f

3 files changed, 39 insertions, 0 deletions

diff --git a/src/command.c b/src/command.c
index 54703ca28..9c13948d6 100644
--- a/src/command.c
+++ b/src/command.c
@@ -84,6 +84,7 @@
 #define COMMAND_CROSSFADE	"crossfade"
 #define COMMAND_URL_HANDLERS   	"urlhandlers" 
 #define COMMAND_PLCHANGES	"plchanges" 
+#define COMMAND_PLCHANGESPOSID	"plchangesposid" 
 #define COMMAND_CURRENTSONG	"currentsong" 
 #define COMMAND_ENABLE_DEV	"enableoutput"
 #define COMMAND_DISABLE_DEV	"disableoutput"
@@ -414,6 +415,21 @@ int handlePlaylistChanges(FILE * fp, unsigned int * permission,
         return playlistChanges(fp, version);
 }
 
+int handlePlaylistChangesPosId(FILE * fp, unsigned int * permission, 
+		int argArrayLength, char ** argArray) 
+{
+        unsigned long version;
+        char * test;
+
+        version = strtoul(argArray[1], &test, 10);
+        if(*test!='\0') {
+                commandError(fp, ACK_ERROR_ARG, "need a positive integer", 
+					NULL);
+                return -1;
+        }
+        return playlistChangesPosId(fp, version);
+}
+
 int handlePlaylistInfo(FILE * fp, unsigned int * permission, 
 		int argArrayLength, char ** argArray) 
 {
@@ -970,6 +986,7 @@ void initCommands() {
         addCommand(COMMAND_CROSSFADE   ,PERMISSION_CONTROL, 1, 1,handleCrossfade,NULL);
         addCommand(COMMAND_URL_HANDLERS,PERMISSION_READ,    0, 0,handleUrlHandlers,NULL);
         addCommand(COMMAND_PLCHANGES   ,PERMISSION_READ,    1, 1,handlePlaylistChanges,NULL);
+        addCommand(COMMAND_PLCHANGESPOSID   ,PERMISSION_READ,    1, 1,handlePlaylistChangesPosId,NULL);
         addCommand(COMMAND_ENABLE_DEV  ,PERMISSION_ADMIN,   1, 1,handleEnableDevice,NULL);
         addCommand(COMMAND_DISABLE_DEV ,PERMISSION_ADMIN,   1, 1,handleDisableDevice,NULL);
         addCommand(COMMAND_DEVICES     ,PERMISSION_ADMIN,   0, 0,handleDevices,NULL);
diff --git a/src/playlist.c b/src/playlist.c
index d122948e5..8eaac641d 100644
--- a/src/playlist.c
+++ b/src/playlist.c
@@ -458,6 +458,26 @@ int playlistChanges(FILE * fp, mpd_uint32 version) {
 	return 0;
 }
 
+int playlistChangesPosId(FILE * fp, mpd_uint32 version) {
+	int i;
+	
+	for(i=0; i<playlist.length; i++) {
+		if(version > playlist.version ||
+				playlist.songMod[i] >= version ||
+				playlist.songMod[i] == 0)
+		{
+			myfprintf(fp, "cpos: %i\n", i);
+			myfprintf(fp, "Id: %i\n", playlist.positionToId[i]);
+		}
+	}
+
+	return 0;
+}
+
+
+
+
+
 int playlistInfo(FILE * fp, int song) {
 	int i;
 	int begin = 0;
diff --git a/src/playlist.h b/src/playlist.h
index 589cd5650..0d0c7b9a8 100644
--- a/src/playlist.h
+++ b/src/playlist.h
@@ -114,6 +114,8 @@ void playlistVersionChange();
 
 int playlistChanges(FILE * fp, mpd_uint32 version);
 
+int playlistChangesPosId(FILE * fp, mpd_uint32 version);
+
 int PlaylistInfo(FILE * fp, char * utf8file, int detail);