V4L/DVB (5179): Cx2341x encoder documentation update.

Signed-off-by: Hans Verkuil <hverkuil@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>

diff --git a/Documentation/video4linux/cx2341x/fw-encoder-api.txt b/Documentation/video4linux/cx2341x/fw-encoder-api.txt
index e499cc0..242104c 100644 (file)
--- a/Documentation/video4linux/cx2341x/fw-encoder-api.txt
+++ b/Documentation/video4linux/cx2341x/fw-encoder-api.txt
@@ -680,7 +680,7 @@ Description
        the value.
 Param[0]
        Command number:
-        1=set initial SCR value when starting encoding.
+        1=set initial SCR value when starting encoding (works).
         2=set quality mode (apparently some test setting).
         3=setup advanced VIM protection handling (supposedly only for the cx23416
           for raw YUV).
@@ -689,7 +689,11 @@ Param[0]
         4=generate artificial PTS timestamps
         5=USB flush mode
         6=something to do with the quantization matrix
-        7=set navigation pack insertion for DVD
+        7=set navigation pack insertion for DVD: adds 0xbf (private stream 2)
+          packets to the MPEG. The size of these packets is 2048 bytes (including
+          the header of 6 bytes: 0x000001bf + length). The payload is zeroed and
+          it is up to the application to fill them in. These packets are apparently
+          inserted every four frames.
         8=enable scene change detection (seems to be a failure)
         9=set history parameters of the video input module
        10=set input field order of VIM