From 8711f5325e938ba18ff0a96ffb4903f6992e6a5c Mon Sep 17 00:00:00 2001
From: Alex Barney <thealexbarney@gmail.com>
Date: Thu, 25 Jan 2018 22:08:41 -0600
Subject: [PATCH] Nop format support

---
 src/formats.c       |  1 +
 src/meta/nsw_opus.c | 12 +++++++++++-
 2 files changed, 12 insertions(+), 1 deletion(-)

diff --git a/src/formats.c b/src/formats.c
index 0d3e3f11..f234fbf0 100644
--- a/src/formats.c
+++ b/src/formats.c
@@ -206,6 +206,7 @@ static const char* extension_list[] = {
     "naac",
     "ndp",
     "ngca",
+    "nop",
     "nps",
     "npsf", //fake extension/header id for .nps (to be removed)
     "nus3bank",
diff --git a/src/meta/nsw_opus.c b/src/meta/nsw_opus.c
index a95a18f1..89bb1ef6 100644
--- a/src/meta/nsw_opus.c
+++ b/src/meta/nsw_opus.c
@@ -11,7 +11,7 @@ VGMSTREAM * init_vgmstream_nsw_opus(STREAMFILE *streamFile) {
     off_t offset = 0;
 
     /* check extension, case insensitive */
-    if ( !check_extensions(streamFile,"opus,lopus")) /* no relation to Ogg Opus */
+    if ( !check_extensions(streamFile,"opus,lopus,nop")) /* no relation to Ogg Opus */
         goto fail;
 
     /* variations, maybe custom */
@@ -32,6 +32,16 @@ VGMSTREAM * init_vgmstream_nsw_opus(STREAMFILE *streamFile) {
         loop_start = read_32bitLE(0x08,streamFile);
         loop_end = read_32bitLE(0x0c,streamFile);
     }
+    else if (read_32bitBE(0x00, streamFile) == 0x73616466 && read_32bitBE(0x08, streamFile) == 0x6f707573) { /* Xenoblade Chronicles 2 */
+        offset = read_32bitLE(0x1c, streamFile);
+
+        num_samples = read_32bitLE(0x28, streamFile);
+        loop_flag = read_8bit(0x19, streamFile);
+        if (loop_flag) {
+            loop_start = read_32bitLE(0x2c, streamFile);
+            loop_end = read_32bitLE(0x30, streamFile);
+            }
+    }
     else {
         offset = 0x00;
     }