On 18 Mar 2003, Gerd Knorr wrote:
> As there are _lots_ of settings for MPEG1/2 it is probably a good idea to
> split the whole thing into some groups. Maybe this way:
>
> struct v4l2_compression { /* rename to mpeg_compression ??? */
> unsigned int group;
> union {
> struct system { ... };
> struct video { ... };
> struct audio { ... };
> };
> };
<warning! caffiene deficient!>
Hmmmm, this seems a bit heavyweight. I know the union's going to give me
nightmares (perl). One of the arguments I have is that some (not all) of the
props can be changed on the fly.
Not that I can come up with anything better:
struct ... {
u32 command;
u32 flags;
u32 args[?];
}
That, of course makes things rather opaque. I'd like some input from the
potential heavy users anyway. I suspect that would be PVR applications (to a
limited extent) and the NLE apps (Cinellera, etc.)
Maybe we should just experiment with some interfaces in the the PRIVATE range
for a bit to see what works and what doesn't. Suggestions gladly accepted.
John
