On Fri June 14 2013 15:59:26 Devin Heitmueller wrote:
> Making G_TUNER calls can take a long time on some tuners, in
> particular those that load firmware or do power management. As a
> result, we don't want to call G_TUNER unless the user is actually
> doing a tuning related call. The current code makes a G_TUNER
> call regardless of what command the user is attempting to perform.
>
> Problem originally identified on the HVR-950q, where even doing
> operations like toggling from the composite to the s-video input
> would take over 1000ms.
>
> Signed-off-by: Devin Heitmueller <dheitmuel...@kernellabs.com>
I've committed this. Thanks, this makes a lot of sense!
Regards,
Hans
> ---
> utils/v4l2-ctl/v4l2-ctl-tuner.cpp | 7 +++++++
> 1 file changed, 7 insertions(+)
>
> diff --git a/utils/v4l2-ctl/v4l2-ctl-tuner.cpp
> b/utils/v4l2-ctl/v4l2-ctl-tuner.cpp
> index ebe74d3..9af6b13 100644
> --- a/utils/v4l2-ctl/v4l2-ctl-tuner.cpp
> +++ b/utils/v4l2-ctl/v4l2-ctl-tuner.cpp
> @@ -254,6 +254,13 @@ void tuner_set(int fd)
> V4L2_TUNER_RADIO : V4L2_TUNER_ANALOG_TV;
> double fac = 16;
>
> + if (!options[OptSetFreq] && ! options[OptSetTuner] &&
> !options[OptListFreqBands]
> + && !options[OptSetModulator] && !options[OptFreqSeek]) {
> + /* Don't actually call G_[MODULATOR/TUNER] if we don't intend to
> + actually perform any tuner related function */
> + return;
> + }
> +
> if (capabilities & V4L2_CAP_MODULATOR) {
> type = V4L2_TUNER_RADIO;
> modulator.index = tuner_index;
>
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