From 0f6ce99e2bf4cc49b42c16cf7fbb4ac658179adb Mon Sep 17 00:00:00 2001
From: bnnm <bananaman255@gmail.com>
Date: Sun, 16 Jan 2022 23:04:35 +0100
Subject: [PATCH] Allow XA with emphasis flag, add .an2 [Croc (PS1)]

---
 src/formats.c |  1 +
 src/meta/xa.c | 11 ++++++-----
 2 files changed, 7 insertions(+), 5 deletions(-)

diff --git a/src/formats.c b/src/formats.c
index 3761ba45..2883f8d9 100644
--- a/src/formats.c
+++ b/src/formats.c
@@ -65,6 +65,7 @@ static const char* extension_list[] = {
     "al2",
     "ams", //txth/reserved [Super Dragon Ball Z (PS2) ELF names]
     "amts", //fake extension/header id for .stm (renamed? to be removed?)
+    "an2",
     "ao",
     "ap",
     "apc",
diff --git a/src/meta/xa.c b/src/meta/xa.c
index 0227e440..e4645bb9 100644
--- a/src/meta/xa.c
+++ b/src/meta/xa.c
@@ -38,8 +38,9 @@ VGMSTREAM* init_vgmstream_xa(STREAMFILE* sf) {
      * .str: often videos and sometimes speech/music
      * .pxa: Mortal Kombat 4 (PS1)
      * .grn: Micro Machines (CDi)
+     * .an2: Croc (PS1) movies
      * (extensionless): bigfiles [Castlevania: Symphony of the Night (PS1)] */
-    if (!check_extensions(sf,"xa,str,pxa,grn,"))
+    if (!check_extensions(sf,"xa,str,pxa,grn,an2,"))
         goto fail;
 
     /* Proper XA comes in raw (BIN 2352 mode2/form2) CD sectors, that contain XA subheaders.
@@ -78,11 +79,11 @@ VGMSTREAM* init_vgmstream_xa(STREAMFILE* sf) {
             case 1: bps = 8; break; /* Micro Machines (CDi) */
             default: goto fail;
         }
-        switch((xa_header >> 6) & 1) { /* 6: emphasis (applies a filter) */
+        switch((xa_header >> 6) & 1) { /* 6: emphasis flag (should apply a de-emphasis filter) */
             case 0: break;
-            default: /*  shouldn't be used by games */
-                vgm_logi("XA: unknown emphasis found\n");
-                goto fail;
+            default: /* very rare, waveform looks ok so maybe not needed [Croc (PS1) PACKx.str] */
+                vgm_logi("XA: emphasis found\n");
+                break;
         }
         switch((xa_header >> 7) & 1) { /* 7: reserved */
             case 0: break;