jpegdec: avoid invalid adapter flush on QoS

First store the available data in the adapter in the rem_img_len instance field
before trying to flush the adapter with that value on QoS.

diff --git a/ext/jpeg/gstjpegdec.c b/ext/jpeg/gstjpegdec.c
index 5f85ac8..207fe8b 100644 (file)
--- a/ext/jpeg/gstjpegdec.c
+++ b/ext/jpeg/gstjpegdec.c
@@ -1203,19 +1203,20 @@ gst_jpeg_dec_chain (GstPad * pad, GstBuffer * buf)
       goto need_more_data;
   }
 
+  dec->rem_img_len = img_len;
+
+  GST_LOG_OBJECT (dec, "image size = %u", img_len);
+
   /* QoS: if we're too late anyway, skip decoding */
   if (dec->packetized && !gst_jpeg_dec_do_qos (dec, timestamp))
     goto skip_decoding;
 
-  GST_LOG_OBJECT (dec, "image size = %u", img_len);
-
 #ifndef GST_DISABLE_GST_DEBUG
   data = (guint8 *) gst_adapter_peek (dec->adapter, 4);
   GST_LOG_OBJECT (dec, "reading header %02x %02x %02x %02x", data[0], data[1],
       data[2], data[3]);
 #endif
 
-  dec->rem_img_len = img_len;
   gst_jpeg_dec_fill_input_buffer (&dec->cinfo);
 
   if (setjmp (dec->jerr.setjmp_buffer)) {