V4L/DVB (13432): cx18: Adjust encoder VBI MDL size to be exactly frame's worth of VBI data
Signed-off-by: Andy Walls <awalls@radix.net>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
diff --git a/drivers/media/video/cx18/cx18-streams.c b/drivers/media/video/cx18/cx18-streams.c
index 7755937..c398651 100644
--- a/drivers/media/video/cx18/cx18-streams.c
+++ b/drivers/media/video/cx18/cx18-streams.c
@@ -515,6 +515,22 @@
if (s->mdl_size % s->buf_size)
s->bufs_per_mdl++;
break;
+ case CX18_ENC_STREAM_TYPE_VBI:
+ s->bufs_per_mdl = 1;
+ if (cx18_raw_vbi(s->cx)) {
+ s->mdl_size = (s->cx->is_60hz ? 12 : 18)
+ * 2 * vbi_active_samples;
+ } else {
+ /*
+ * See comment in cx18_vbi_setup() below about the
+ * extra lines we capture in sliced VBI mode due to
+ * the lines on which EAV RP codes toggle.
+ */
+ s->mdl_size = s->cx->is_60hz
+ ? (21 - 4 + 1) * 2 * vbi_hblank_samples_60Hz
+ : (23 - 2 + 1) * 2 * vbi_hblank_samples_50Hz;
+ }
+ break;
default:
s->bufs_per_mdl = 1;
s->mdl_size = s->buf_size * s->bufs_per_mdl;