From 16d0e79db7a5e99a9859cfaacb718dfae862cb2a Mon Sep 17 00:00:00 2001
From: Chris Robinson <chris.kcat@gmail.com>
Date: Tue, 20 Nov 2018 02:42:49 -0800
Subject: Add compile-time traits for FmtType enum values

---
 OpenAL32/Include/alBuffer.h | 25 ++++++++++++++++++-------
 1 file changed, 18 insertions(+), 7 deletions(-)

(limited to 'OpenAL32')

diff --git a/OpenAL32/Include/alBuffer.h b/OpenAL32/Include/alBuffer.h
index f264caa5..a99c06fc 100644
--- a/OpenAL32/Include/alBuffer.h
+++ b/OpenAL32/Include/alBuffer.h
@@ -8,9 +8,6 @@
 #include "inprogext.h"
 #include "atomic.h"
 
-#ifdef __cplusplus
-extern "C" {
-#endif
 
 /* User formats */
 enum UserFmtType {
@@ -65,6 +62,24 @@ enum FmtChannels {
 };
 #define MAX_INPUT_CHANNELS  (8)
 
+/* DevFmtType traits, providing the type, etc given a DevFmtType. */
+template<FmtType T>
+struct FmtTypeTraits { };
+
+template<>
+struct FmtTypeTraits<FmtUByte> { using Type = ALubyte; };
+template<>
+struct FmtTypeTraits<FmtShort> { using Type = ALshort; };
+template<>
+struct FmtTypeTraits<FmtFloat> { using Type = ALfloat; };
+template<>
+struct FmtTypeTraits<FmtDouble> { using Type = ALdouble; };
+template<>
+struct FmtTypeTraits<FmtMulaw> { using Type = ALubyte; };
+template<>
+struct FmtTypeTraits<FmtAlaw> { using Type = ALubyte; };
+
+
 ALsizei BytesFromFmt(enum FmtType type);
 ALsizei ChannelsFromFmt(enum FmtChannels chans);
 inline ALsizei FrameSizeFromFmt(enum FmtChannels chans, enum FmtType type)
@@ -107,8 +122,4 @@ typedef struct ALbuffer {
 
 ALvoid ReleaseALBuffers(ALCdevice *device);
 
-#ifdef __cplusplus
-}
-#endif
-
 #endif
-- 
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