diff options
| author | Andy Walls <awalls@radix.net> | 2009-04-26 23:34:36 +0400 |
|---|---|---|
| committer | Mauro Carvalho Chehab <mchehab@redhat.com> | 2009-06-17 01:20:45 +0400 |
| commit | 0c6292522968427d4f8e01f7c2e4216f04470072 (patch) | |
| tree | 2ec6bbcf63573a04490105845997537940b55eb8 /drivers/media/video/cx18 | |
| parent | 9982be8a14e4bff0c3750cbfb669d2648a98b2e8 (diff) | |
| download | linux-0c6292522968427d4f8e01f7c2e4216f04470072.tar.xz | |
V4L/DVB (11622): cx18: Allow IVTV format VBI insertion in MPEG-2 SVCD and DVD streams
Both the MPEG-2 SVCD stream format and the MPEG-2 DVD stream format should
use an MPEG-2 PS container. This makes it safe to stuff IVTV Private Stream 1
VBI packets in these stream types using the existing cx18 driver routines.
Reported-by: Helen Buus <mythtv@hbuus.com>
Signed-off-by: Andy Walls <awalls@radix.net>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
Diffstat (limited to 'drivers/media/video/cx18')
| -rw-r--r-- | drivers/media/video/cx18/cx18-controls.c | 6 | ||||
| -rw-r--r-- | drivers/media/video/cx18/cx18-fileops.c | 7 |
2 files changed, 10 insertions, 3 deletions
diff --git a/drivers/media/video/cx18/cx18-controls.c b/drivers/media/video/cx18/cx18-controls.c index 82fc2f9d4021..8e35c3aed544 100644 --- a/drivers/media/video/cx18/cx18-controls.c +++ b/drivers/media/video/cx18/cx18-controls.c @@ -176,8 +176,10 @@ static int cx18_setup_vbi_fmt(struct cx18 *cx, return -EBUSY; if (fmt != V4L2_MPEG_STREAM_VBI_FMT_IVTV || - type != V4L2_MPEG_STREAM_TYPE_MPEG2_PS) { - /* We don't do VBI insertion aside from IVTV format in a PS */ + !(type == V4L2_MPEG_STREAM_TYPE_MPEG2_PS || + type == V4L2_MPEG_STREAM_TYPE_MPEG2_DVD || + type == V4L2_MPEG_STREAM_TYPE_MPEG2_SVCD)) { + /* Only IVTV fmt VBI insertion & only MPEG-2 PS type streams */ cx->vbi.insert_mpeg = V4L2_MPEG_STREAM_VBI_FMT_NONE; CX18_DEBUG_INFO("disabled insertion of sliced VBI data into " "the MPEG stream\n"); diff --git a/drivers/media/video/cx18/cx18-fileops.c b/drivers/media/video/cx18/cx18-fileops.c index b3889c0b2697..29969c18949c 100644 --- a/drivers/media/video/cx18/cx18-fileops.c +++ b/drivers/media/video/cx18/cx18-fileops.c @@ -265,8 +265,13 @@ static size_t cx18_copy_buf_to_user(struct cx18_stream *s, * an MPEG-2 Program Pack start code, and provide only * up to that point to the user, so it's easy to insert VBI data * the next time around. + * + * This will not work for an MPEG-2 TS and has only been + * verified by analysis to work for an MPEG-2 PS. Helen Buus + * pointed out this works for the CX23416 MPEG-2 DVD compatible + * stream, and research indicates both the MPEG 2 SVCD and DVD + * stream types use an MPEG-2 PS container. */ - /* FIXME - This only works for an MPEG-2 PS, not a TS */ /* * An MPEG-2 Program Stream (PS) is a series of * MPEG-2 Program Packs terminated by an |