ilbc: convert to new channel layout API

Signed-off-by: Vittorio Giovara <vittorio.giovara@gmail.com>
Signed-off-by: James Almer <jamrial@gmail.com>

libavformat/ilbc.c

@@ -75,7 +75,7 @@ static int ilbc_read_header(AVFormatContext *s)
         return AVERROR(ENOMEM);
     st->codecpar->codec_id = AV_CODEC_ID_ILBC;
     st->codecpar->sample_rate = 8000;
-    st->codecpar->channels = 1;
+    st->codecpar->ch_layout = (AVChannelLayout)AV_CHANNEL_LAYOUT_MONO;
     st->codecpar->codec_type = AVMEDIA_TYPE_AUDIO;
     st->start_time = 0;
     avpriv_set_pts_info(st, 64, 1, st->codecpar->sample_rate);