Hi Kieran, Thank you for the patch. On Monday, 10 December 2018 13:18:08 EET Kieran Bingham wrote: > Provide a new option '--reset-controls' which will enumerate the > available controls on a device or sub-device, and re-initialise them to > defaults. > > Signed-off-by: Kieran Bingham <kieran.bingham@xxxxxxxxxxxxxxxx> > > --- > > v2: > - Rebase and rework to sit on top of the compound control changes > > With this patch, and the updated VSP-Tests series, the M3-N now > successfully passes all of the tests using the VSP1. > > This patch is available on the 'vsp' branch at: > https://github.com/kbingham/yavta.git > > > yavta.c | 56 ++++++++++++++++++++++++++++++++++++++++++++++++++++++-- > 1 file changed, 54 insertions(+), 2 deletions(-) > > diff --git a/yavta.c b/yavta.c > index 625a93ba879d..656ead0f0a37 100644 > --- a/yavta.c > +++ b/yavta.c > @@ -1547,7 +1547,43 @@ static void video_set_control(struct device *dev, > unsigned int id, free(ctrl.ptr); > } > > -static void video_list_controls(struct device *dev) > +static int video_reset_control(struct device *dev, unsigned int id) > +{ > + struct v4l2_query_ext_ctrl query; > + struct v4l2_ext_control ctrl; > + int ret; > + > + ret = query_control(dev, id, &query); > + if (ret < 0) > + return ret; > + > + if (query.type == V4L2_CTRL_TYPE_CTRL_CLASS) > + return query.id; > + > + /* Skip controls that we cannot (or should not) update. */ > + if (query.flags & (V4L2_CTRL_FLAG_DISABLED > + | V4L2_CTRL_FLAG_VOLATILE > + | V4L2_CTRL_FLAG_READ_ONLY)) > + return query.id; > + > + ctrl.id = query.id; > + ctrl.value = query.default_value; > + > + ret = set_control(dev, &query, &ctrl); > + if (ret < 0) { > + printf("unable to reset control 0x%8.8x: %s (%d).\n", > + id, strerror(errno), errno); > + } else { > + printf("control 0x%08x reset to ", id); > + > + video_print_control_value(&query, &ctrl); > + printf("\n"); > + } > + > + return query.id; > +} > + > +static void video_list_controls(struct device *dev, bool reset) > { > unsigned int nctrls = 0; > unsigned int id; > @@ -1568,6 +1604,12 @@ static void video_list_controls(struct device *dev) > if (ret < 0) > break; > > + if (reset) { > + ret = video_reset_control(dev, id); > + if (ret < 0) > + break; > + } > + How about resetting all controls in one go using the VIDIOC_S_EXT_CTRLS API ? You can query the default values of all controls in one go as well with VIDIOC_G_EXT_CTRLS, so that would be two ioctl calls only. > id = ret; > nctrls++; > } > @@ -2206,6 +2248,7 @@ static void usage(const char *argv0) > printf(" --offset User pointer buffer offset from page start\n"); > printf(" --premultiplied Color components are premultiplied by alpha > value\n"); printf(" --queue-late Queue buffers after streamon, not > before\n"); + printf(" --reset-controls Enumerate available controls > and reset to defaults\n"); printf(" --requeue-last Requeue the last > buffers before streamoff\n"); printf(" --timestamp-source Set timestamp > source on output buffers [eof, soe]\n"); printf(" --skip n Skip the > first n frames\n"); > @@ -2229,6 +2272,7 @@ static void usage(const char *argv0) > #define OPT_PREMULTIPLIED 269 > #define OPT_QUEUE_LATE 270 > #define OPT_DATA_PREFIX 271 > +#define OPT_RESET_CONTROLS 272 > > static struct option opts[] = { > {"buffer-size", 1, 0, OPT_BUFFER_SIZE}, > @@ -2257,6 +2301,7 @@ static struct option opts[] = { > {"queue-late", 0, 0, OPT_QUEUE_LATE}, > {"get-control", 1, 0, 'r'}, > {"requeue-last", 0, 0, OPT_REQUEUE_LAST}, > + {"reset-controls", 0, 0, OPT_RESET_CONTROLS}, > {"realtime", 2, 0, 'R'}, > {"size", 1, 0, 's'}, > {"set-control", 1, 0, 'w'}, > @@ -2284,6 +2329,7 @@ int main(int argc, char *argv[]) > int do_enum_formats = 0, do_set_format = 0; > int do_enum_inputs = 0, do_set_input = 0; > int do_list_controls = 0, do_get_control = 0, do_set_control = 0; > + int do_reset_controls = 0; > int do_sleep_forever = 0, do_requeue_last = 0; > int do_rt = 0, do_log_status = 0; > int no_query = 0, do_queue_late = 0; > @@ -2476,6 +2522,9 @@ int main(int argc, char *argv[]) > case OPT_QUEUE_LATE: > do_queue_late = 1; > break; > + case OPT_RESET_CONTROLS: > + do_reset_controls = 1; > + break; > case OPT_REQUEUE_LAST: > do_requeue_last = 1; > break; > @@ -2560,7 +2609,10 @@ int main(int argc, char *argv[]) > video_set_control(&dev, ctrl_name, ctrl_value); > > if (do_list_controls) > - video_list_controls(&dev); > + video_list_controls(&dev, false); > + > + if (do_reset_controls) > + video_list_controls(&dev, true); > > if (do_enum_formats) { > printf("- Available formats:\n"); -- Regards, Laurent Pinchart
