From 2dddc3b31a08751f50a6ddfc0144c08b67bed314 Mon Sep 17 00:00:00 2001
From: Andre Noll <maan@tuebingen.mpg.de>
Date: Sun, 28 Jun 2015 20:05:13 +0200
Subject: [PATCH] server: Add mood methods image_id and lyrics_id.

This rather simple patch allows to easily define a mood that selects
all files of an album through the image ID, or all versions of a song
(including cover and Live versions) through the lyrics ID.

The documentation is updated to list the two new mood methods.
---
 mm.c          | 18 ++++++++++++++++++
 web/manual.m4 |  5 +++--
 2 files changed, 21 insertions(+), 2 deletions(-)

diff --git a/mm.c b/mm.c
index d6f3573c..92856ec3 100644
--- a/mm.c
+++ b/mm.c
@@ -191,6 +191,22 @@ static int mm_channels_score_function(__a_unused const char *path,
 	return mm_compare_num_score_function(afhi->channels, private);
 }
 
+static int mm_image_id_score_function(__a_unused const char *path,
+		const struct afs_info *afsi,
+		__a_unused const struct afh_info *afhi,
+		const void *private)
+{
+	return mm_compare_num_score_function(afsi->image_id, private);
+}
+
+static int mm_lyrics_id_score_function(__a_unused const char *path,
+		const struct afs_info *afsi,
+		__a_unused const struct afh_info *afhi,
+		const void *private)
+{
+	return mm_compare_num_score_function(afsi->lyrics_id, private);
+}
+
 static int mm_num_played_score_function(__a_unused const char *path,
 		const struct afs_info *afsi,
 		__a_unused const struct afh_info *afhi,
@@ -356,5 +372,7 @@ const struct mood_method mood_methods[] = {
 	{DEFINE_COMPARE_NUM_MOOD_METHOD(frequency)},
 	{DEFINE_COMPARE_NUM_MOOD_METHOD(channels)},
 	{DEFINE_COMPARE_NUM_MOOD_METHOD(num_played)},
+	{DEFINE_COMPARE_NUM_MOOD_METHOD(image_id)},
+	{DEFINE_COMPARE_NUM_MOOD_METHOD(lyrics_id)},
 	{.parser = NULL}
 };
diff --git a/web/manual.m4 b/web/manual.m4
index 0963306e..88e31169 100644
--- a/web/manual.m4
+++ b/web/manual.m4
@@ -956,12 +956,13 @@ is not set, the empty string is matched against the pattern.
 	frequency ~ <num>
 	channels ~ <num>
 	num_played ~ <num>
+	image_id ~ <num>
+	lyrics_id ~ <num>
 
 Takes a comparator ~ of the set {<, =, <=, >, >=, !=} and a number
 <num>. Matches an audio file iff the condition <val> ~ <num> is
 satisfied where val is the corresponding value of the audio file
-(value of the year tag, bitrate in kbit/s, frequency in Hz, channel
-count, play count).
+(value of the year tag, bitrate in kbit/s, etc.).
 
 The year tag is special as its value is undefined if the audio file
 has no year tag or the content of the year tag is not a number. Such
-- 
2.39.5