lavf/img2dec: Skip SOF size when probing jpeg.

Fixes auto-detection for some resolutions.
Reported-by: Clément Bœsch

diff --git a/libavformat/img2dec.c b/libavformat/img2dec.c
index a755b6f..28a1fdb 100644 (file)
--- a/libavformat/img2dec.c
+++ b/libavformat/img2dec.c
@@ -709,6 +709,7 @@ static int jpeg_probe(AVProbeData *p)
         case 0xC5:
         case 0xC6:
         case 0xC7:
+            i += AV_RB16(&b[i + 2]) + 1;
             if (state != 0xD8)
                 return 0;
             state = 0xC0;