From f73d75384f1d270eb12542940640d9bee50033e0 Mon Sep 17 00:00:00 2001
From: Carl Eugen Hoyos <cehoyos@ag.or.at>
Date: Fri, 8 Aug 2014 16:14:18 +0200
Subject: Autodetect webp files.

---
 libavformat/img2dec.c | 11 +++++++++++
 1 file changed, 11 insertions(+)

(limited to 'libavformat/img2dec.c')

diff --git a/libavformat/img2dec.c b/libavformat/img2dec.c
index 259f90bc56..272adac69d 100644
--- a/libavformat/img2dec.c
+++ b/libavformat/img2dec.c
@@ -658,6 +658,16 @@ static int tiff_probe(AVProbeData *p)
     return 0;
 }
 
+static int webp_probe(AVProbeData *p)
+{
+    const uint8_t *b = p->buf;
+
+    if (AV_RB32(b)     == 0x52494646 &&
+        AV_RB32(b + 8) == 0x57454250)
+        return AVPROBE_SCORE_MAX - 1;
+    return 0;
+}
+
 #define IMAGEAUTO_DEMUXER(imgname, codecid)\
 static const AVClass imgname ## _class = {\
     .class_name = AV_STRINGIFY(imgname) " demuxer",\
@@ -685,3 +695,4 @@ IMAGEAUTO_DEMUXER(png,     AV_CODEC_ID_PNG)
 IMAGEAUTO_DEMUXER(sgi,     AV_CODEC_ID_SGI)
 IMAGEAUTO_DEMUXER(sunrast, AV_CODEC_ID_SUNRAST)
 IMAGEAUTO_DEMUXER(tiff,    AV_CODEC_ID_TIFF)
+IMAGEAUTO_DEMUXER(webp,    AV_CODEC_ID_WEBP)
-- 
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