diff options
| author | Hans Verkuil <hverkuil@xs4all.nl> | 2006-12-18 13:06:30 -0300 |
|---|---|---|
| committer | Mauro Carvalho Chehab <mchehab@infradead.org> | 2007-02-21 13:34:13 -0200 |
| commit | e12ceaf4962d804320d639faed1da61e2cb85723 (patch) | |
| tree | d87a93e07f4a98881818315833c06189020361ab /Documentation/video4linux/cx2341x/fw-decoder-api.txt | |
| parent | 8387c66c7f06842b06222235a3749b31448d6637 (diff) | |
V4L/DVB (4981): Update cx2341x documentation.
Signed-off-by: Hans Verkuil <hverkuil@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
Diffstat (limited to 'Documentation/video4linux/cx2341x/fw-decoder-api.txt')
| -rw-r--r-- | Documentation/video4linux/cx2341x/fw-decoder-api.txt | 14 |
1 files changed, 14 insertions, 0 deletions
diff --git a/Documentation/video4linux/cx2341x/fw-decoder-api.txt b/Documentation/video4linux/cx2341x/fw-decoder-api.txt index 78bf5f21e51..15c388b8bd1 100644 --- a/Documentation/video4linux/cx2341x/fw-decoder-api.txt +++ b/Documentation/video4linux/cx2341x/fw-decoder-api.txt @@ -32,6 +32,10 @@ Description playback stops at specified PTS. Param[0] Display 0=last frame, 1=black + Note: this takes effect immediately, so if you want to wait for a PTS, + then use '0', otherwise the screen goes to black at once. + You can call this later (even if there is no playback) with a 1 value + to set the screen to black. Param[1] PTS low Param[2] @@ -60,8 +64,12 @@ Param[0] 31 Speed: '0' slow '1' fast + Note: n seems to be limited to 2. Anything higher does not result in + faster playback. Instead the host should start dropping frames. Param[1] Direction: 0=forward, 1=reverse + Note: to make reverse playback work you have to write full GOPs in + reverse order. Param[2] Picture mask: 1=I frames @@ -69,6 +77,8 @@ Param[2] 7=I, P, B frames Param[3] B frames per GOP (for reverse play only) + Note: apparently this does not work. For reverse play I can only make it + work by selecting I or I and P frames in the Picture mask. Param[4] Mute audio: 0=disable, 1=enable Param[5] @@ -212,6 +222,7 @@ Description Select audio mode Param[0] Dual mono mode action + 0=Stereo, 1=Left, 2=Right, 3=Mono, 4=Swap, -1=Unchanged Param[1] Stereo mode action: 0=Stereo, 1=Left, 2=Right, 3=Mono, 4=Swap, -1=Unchanged @@ -225,6 +236,9 @@ Description Counterpart to API 0xD5 Param[0] Event: 0=Audio mode change between stereo and dual channel + Event: 3=Decoder started + Event: 4=Unknown: goes off 10-15 times per second while decoding. + Event: 5=Some sync event: goes off once per frame. Param[1] Notification 0=disabled, 1=enabled Param[2] |