svag: convert to new channel layout API

Signed-off-by: James Almer <jamrial@gmail.com>

libavformat/svag.c

@@ -47,14 +47,15 @@ static int svag_read_header(AVFormatContext *s)
     st->codecpar->sample_rate = avio_rl32(s->pb);
     if (st->codecpar->sample_rate <= 0)
         return AVERROR_INVALIDDATA;
-    st->codecpar->channels    = avio_rl32(s->pb);
-    if (st->codecpar->channels <= 0 || st->codecpar->channels > 8)
+    st->codecpar->ch_layout.nb_channels = avio_rl32(s->pb);
+    if (st->codecpar->ch_layout.nb_channels <= 0 ||
+        st->codecpar->ch_layout.nb_channels > 8)
         return AVERROR_INVALIDDATA;
-    st->duration           = size / (16 * st->codecpar->channels) * 28;
+    st->duration           = size / (16 * st->codecpar->ch_layout.nb_channels) * 28;
     align                  = avio_rl32(s->pb);
-    if (align <= 0 || align > INT_MAX / st->codecpar->channels)
+    if (align <= 0 || align > INT_MAX / st->codecpar->ch_layout.nb_channels)
         return AVERROR_INVALIDDATA;
-    st->codecpar->block_align = align * st->codecpar->channels;
+    st->codecpar->block_align = align * st->codecpar->ch_layout.nb_channels;
     avio_skip(s->pb, 0x800 - avio_tell(s->pb));
     avpriv_set_pts_info(st, 64, 1, st->codecpar->sample_rate);