1 files changed, 11 insertions, 0 deletions
diff --git a/libavcodec/qsvdec.h b/libavcodec/qsvdec.h
index c30627a4bd..5211fb2ee8 100644
--- a/libavcodec/qsvdec.h
+++ b/libavcodec/qsvdec.h
@@ -51,10 +51,21 @@ typedef struct QSVContext {
     AVFifoBuffer *async_fifo;
     AVFifoBuffer *input_fifo;
 
+    // we should to buffer input packets at some cases
+    // else it is not possible to handle dynamic stream changes correctly
+    // this fifo uses for input packets buffering
+    AVFifoBuffer *pkt_fifo;
+
     // this flag indicates that header parsed,
     // decoder instance created and ready to general decoding
     int engine_ready;
 
+    // we can not just re-init decoder if different sequence header arrived
+    // we should to deliver all buffered frames but we can not decode new packets
+    // this time. So when reinit_pending is non-zero we flushing decoder and
+    // accumulate new arrived packets into pkt_fifo
+    int reinit_pending;
+
     // options set by the caller
     int async_depth;
     int iopattern;