From 60c15894c0c0e4ca3fc315753080f85eb52e0b22 Mon Sep 17 00:00:00 2001
From: Emmm Monster <58943012+emmmx@users.noreply.github.com>
Date: Tue, 25 May 2021 12:20:04 +0800
Subject: [PATCH] Fixed #12: Add sniffer for `.dff`

---
 algo/common/sniff.go | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/algo/common/sniff.go b/algo/common/sniff.go
index 899c639..3370305 100644
--- a/algo/common/sniff.go
+++ b/algo/common/sniff.go
@@ -12,6 +12,7 @@ var snifferRegistry = map[string]Sniffer{
 	".wav":  SnifferWAV,
 	".wma":  SnifferWMA,
 	".aac":  SnifferAAC,
+	".dff":  SnifferDFF,
 }
 
 func SniffAll(header []byte) (string, bool) {
@@ -46,3 +47,9 @@ func SnifferWMA(header []byte) bool {
 func SnifferAAC(header []byte) bool {
 	return bytes.HasPrefix(header, []byte{0xFF, 0xF1})
 }
+
+// SnifferDFF sniff a DSDIFF format
+// reference to: https://www.sonicstudio.com/pdf/dsd/DSDIFF_1.5_Spec.pdf
+func SnifferDFF(header []byte) bool {
+	return bytes.HasPrefix(header, []byte("FRM8"))
+}