mjpegdec: parse app-xfrm

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

libavcodec/mjpegdec.c

@@ -1469,6 +1469,13 @@ static int mjpeg_decode_app(MJpegDecodeContext *s)
         len --;
         goto out;
     }
+    if (id == AV_RL32("xfrm") && len > 0) {
+        s->xfrm = get_bits(&s->gb, 8);
+        if (s->avctx->debug & FF_DEBUG_PICT_INFO)
+            av_log(s->avctx, AV_LOG_INFO, "XFRM %d\n", s->xfrm);
+        len --;
+        goto out;
+    }
 
     /* Apple MJPEG-A */
     if ((s->start_code == APP1) && (len > (0x28 - 8))) {

libavcodec/mjpegdec.h

@@ -66,6 +66,7 @@ typedef struct MJpegDecodeContext {
     int pegasus_rct;    /* pegasus reversible colorspace transform */
     int bits;           /* bits per component */
     int colr;
+    int xfrm;
 
     int maxval;
     int near;         ///< near lossless bound (si 0 for lossless)