From 2d9275e49aadf0235e348e28a3fc3699c471e0b5 Mon Sep 17 00:00:00 2001
From: Sam Lantinga <slouken@libsdl.org>
Date: Tue, 11 Sep 2001 18:52:45 +0000
Subject: [PATCH] Handle the case where the WAVE magic number was already read
 in a non-seekable stream.  I don't know if the code works with non-seekable
 streams anyway, but ...

--HG--
extra : convert_revision : svn%3Ac70aab31-4412-0410-b14c-859654838e24/trunk%40172
---
 src/audio/SDL_wave.c | 8 +++++++-
 1 file changed, 7 insertions(+), 1 deletion(-)

diff --git a/src/audio/SDL_wave.c b/src/audio/SDL_wave.c
index 91ebd2650..bf4642242 100644
--- a/src/audio/SDL_wave.c
+++ b/src/audio/SDL_wave.c
@@ -434,7 +434,13 @@ SDL_AudioSpec * SDL_LoadWAV_RW (SDL_RWops *src, int freesrc,
 	/* Check the magic header */
 	RIFFchunk	= SDL_ReadLE32(src);
 	wavelen		= SDL_ReadLE32(src);
-	WAVEmagic	= SDL_ReadLE32(src);
+	if ( wavelen == WAVE ) { /* The RIFFchunk has already been read */
+		WAVEmagic = wavelen;
+		wavelen   = RIFFchunk;
+		RIFFchunk = RIFF;
+	} else {
+		WAVEmagic = SDL_ReadLE32(src);
+	}
 	if ( (RIFFchunk != RIFF) || (WAVEmagic != WAVE) ) {
 		SDL_SetError("Unrecognized file type (not WAVE)");
 		was_error = 1;