Merge remote-tracking branch 'qatar/release/9' into release/1.1

* qatar/release/9:
  eamad: allocate a dummy reference frame when the real one is missing
  libmp3lame: use the correct remaining buffer size when flushing
  png: use av_mallocz_array() for the zlib zalloc function
  wmaprodec: require block_align to be set.
  ffv1: fix calculating slice dimensions for version 2
  xxan: fix invalid memory access in xan_decode_frame_type0()
  wmadec: require block_align to be set.
  ivi_common: do not call MC for intra frames when dc_transform is unset

Conflicts:
	libavcodec/ffv1dec.c
	libavcodec/ivi_common.c

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

1 files changed, 15 insertions, 0 deletions

diff --git a/libavcodec/eamad.c b/libavcodec/eamad.c
index 2f9559fe8e..e71bf9adb3 100644
--- a/libavcodec/eamad.c
+++ b/libavcodec/eamad.c
@@ -276,6 +276,21 @@ static int decode_frame(AVCodecContext *avctx,
         }
     }
 
+    if (inter && !s->last_frame.data[0]) {
+        int ret;
+        av_log(avctx, AV_LOG_WARNING, "Missing reference frame.\n");
+        s->last_frame.reference = 1;
+        ret = ff_get_buffer(avctx, &s->last_frame);
+        if (ret < 0)
+            return ret;
+        memset(s->last_frame.data[0], 0, s->last_frame.height *
+               s->last_frame.linesize[0]);
+        memset(s->last_frame.data[1], 0x80, s->last_frame.height / 2 *
+               s->last_frame.linesize[1]);
+        memset(s->last_frame.data[2], 0x80, s->last_frame.height / 2 *
+               s->last_frame.linesize[2]);
+    }
+
     av_fast_padded_malloc(&s->bitstream_buf, &s->bitstream_buf_size,
                           buf_end - buf);
     if (!s->bitstream_buf)