From 2b44d289cf5a074ccaa80aebcb663f68b02358fb Mon Sep 17 00:00:00 2001
From: halleyscometsw <halleyscometsw@51a99a44-fe44-0410-b1ba-c3e57ba2b86b>
Date: Tue, 8 Jul 2008 22:07:15 +0000
Subject: [PATCH] LOOPSTART, LOOPLENGTH tag pair for ogg

git-svn-id: https://vgmstream.svn.sourceforge.net/svnroot/vgmstream@298 51a99a44-fe44-0410-b1ba-c3e57ba2b86b
---
 src/meta/ogg_vorbis_file.c | 15 ++++++++++++++-
 1 file changed, 14 insertions(+), 1 deletion(-)

diff --git a/src/meta/ogg_vorbis_file.c b/src/meta/ogg_vorbis_file.c
index 77605d64..bfc94124 100644
--- a/src/meta/ogg_vorbis_file.c
+++ b/src/meta/ogg_vorbis_file.c
@@ -83,6 +83,8 @@ VGMSTREAM * init_vgmstream_ogg_vorbis(STREAMFILE *streamFile) {
 
     int loop_flag = 0;
     int32_t loop_start = 0;
+    int loop_length_found = 0;
+    int32_t loop_length = 0;
 
     /* check extension, case insensitive */
     streamFile->get_name(streamFile,filename,sizeof(filename));
@@ -146,12 +148,20 @@ VGMSTREAM * init_vgmstream_ogg_vorbis(STREAMFILE *streamFile) {
                 strstr(comment->user_comments[i],"LOOP_START=")==
                     comment->user_comments[i] ||
                 strstr(comment->user_comments[i],"COMMENT=LOOPPOINT=")==
+                    comment->user_comments[i] ||
+                strstr(comment->user_comments[i],"LOOPSTART=")==
                     comment->user_comments[i]
                     ) {
                 loop_start=atol(strrchr(comment->user_comments[i],'=')+1);
                 loop_flag=1;
                 break;
             }
+            else if (strstr(comment->user_comments[i],"LOOPLENGTH=")==
+                    comment->user_comments[i]) {
+                loop_length=atol(strrchr(comment->user_comments[i],'=')+1);
+                loop_length_found=1;
+                break;
+            }
         }
     }
 
@@ -171,7 +181,10 @@ VGMSTREAM * init_vgmstream_ogg_vorbis(STREAMFILE *streamFile) {
 
     if (loop_flag) {
         vgmstream->loop_start_sample = loop_start;
-        vgmstream->loop_end_sample = vgmstream->num_samples;
+        if (loop_length_found)
+            vgmstream->loop_end_sample = loop_start+loop_length;
+        else
+            vgmstream->loop_end_sample = vgmstream->num_samples;
         vgmstream->loop_flag = loop_flag;
     }
     vgmstream->coding_type = coding_ogg_vorbis;