Hi,
I have a bt878 based video capture card (Dynalink CH061) that I
would like to get running properly under Linux.
I have added the card to my copy of bttv-cards.c in the bttv2
driver code so that the video capture works OK and I can use the
Televsion and Composite inputs to view and capture pictures but I
can't get the audio working.
Would someone be able to explain what the variables in the tvcard
struct relate to, or point me to the relevant documentation or
source. I have indicated my guesses about some of the parameters.
struct tvcard
{
char *name;
int video_inputs; number of video inputs?
int audio_inputs; number of audio inputs?
int tuner; index of tuner input in video input array?
int svhs; index of svhs input in video input array?
u32 audio_input_mask;
u32 muxsel[8];
u32 audiomux[6]; /* Tuner, Radio, external, internal, mute,
stereo */
u32 video_input_mask; /* GPIO MUX mask */
int pll; GR set to 1 if the card needs this - mine did
};
These are the values that work for my card, which I determined by
looking at the values for for similar cards and a bit of trial and
error.
{ "Dynalink CH061 - Bt878", 4, 1, 0, 3, ?,
{ 2, 3, 1, 1}, { ?, ?, ?, ?, ?}, 0, 1
},
I'm guessing that I need to know the values to put in the
audio_input_mask and audiomux[] variables. Is there a way I can
probe the card to find out what these should be?
I'd be grateful for any help.
Cheers
g
--
Glenn Ramsey
[EMAIL PROTECTED]
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