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| author | Mike Isely <isely@pobox.com> | 2006-07-27 00:01:55 -0500 |
|---|---|---|
| committer | Mike Isely <isely@pobox.com> | 2006-07-27 00:01:55 -0500 |
| commit | e4fc875770043b0895e779dc5f2268430e82f5f2 (patch) | |
| tree | 1dd355417a7b4d5754e488f349614899690a642a /linux/drivers/media | |
| parent | b3457c9cbfdb5f46bf594929e4e4248d44ffd399 (diff) | |
| download | mediapointer-dvb-s2-e4fc875770043b0895e779dc5f2268430e82f5f2.tar.gz mediapointer-dvb-s2-e4fc875770043b0895e779dc5f2268430e82f5f2.tar.bz2 | |
Make it possible for run-time calculation of control min/max in pvrusb2
From: Mike Isely <isely@pobox.com>
The internal control implementation in the pvrusb2 driver normally
encodes integer range limits using literal values in a const
structure. This change adds two function pointers, which if not null
will be called through in order to determine integer min / max
values.
Signed-off-by: Mike Isely <isely@pobox.com>
Diffstat (limited to 'linux/drivers/media')
| -rw-r--r-- | linux/drivers/media/video/pvrusb2/pvrusb2-ctrl.c | 21 | ||||
| -rw-r--r-- | linux/drivers/media/video/pvrusb2/pvrusb2-hdw-internal.h | 2 |
2 files changed, 17 insertions, 6 deletions
diff --git a/linux/drivers/media/video/pvrusb2/pvrusb2-ctrl.c b/linux/drivers/media/video/pvrusb2/pvrusb2-ctrl.c index 999c5e223..767cb0943 100644 --- a/linux/drivers/media/video/pvrusb2/pvrusb2-ctrl.c +++ b/linux/drivers/media/video/pvrusb2/pvrusb2-ctrl.c @@ -48,12 +48,17 @@ int pvr2_ctrl_set_mask_value(struct pvr2_ctrl *cptr,int mask,int val) if (cptr->info->type == pvr2_ctl_bitmask) { mask &= cptr->info->def.type_bitmask.valid_bits; } else if (cptr->info->type == pvr2_ctl_int) { - if (val < cptr->info->def.type_int.min_value) { - break; + int lim; + lim = cptr->info->def.type_int.min_value; + if (cptr->info->get_min_value) { + cptr->info->get_min_value(cptr,&lim); } - if (val > cptr->info->def.type_int.max_value) { - break; + if (val < lim) break; + lim = cptr->info->def.type_int.max_value; + if (cptr->info->get_max_value) { + cptr->info->get_max_value(cptr,&lim); } + if (val > lim) break; } else if (cptr->info->type == pvr2_ctl_enum) { if (val >= cptr->info->def.type_enum.count) { break; @@ -96,7 +101,9 @@ int pvr2_ctrl_get_max(struct pvr2_ctrl *cptr) int ret = 0; if (!cptr) return 0; LOCK_TAKE(cptr->hdw->big_lock); do { - if (cptr->info->type == pvr2_ctl_int) { + if (cptr->info->get_max_value) { + cptr->info->get_max_value(cptr,&ret); + } else if (cptr->info->type == pvr2_ctl_int) { ret = cptr->info->def.type_int.max_value; } } while(0); LOCK_GIVE(cptr->hdw->big_lock); @@ -110,7 +117,9 @@ int pvr2_ctrl_get_min(struct pvr2_ctrl *cptr) int ret = 0; if (!cptr) return 0; LOCK_TAKE(cptr->hdw->big_lock); do { - if (cptr->info->type == pvr2_ctl_int) { + if (cptr->info->get_min_value) { + cptr->info->get_min_value(cptr,&ret); + } else if (cptr->info->type == pvr2_ctl_int) { ret = cptr->info->def.type_int.min_value; } } while(0); LOCK_GIVE(cptr->hdw->big_lock); diff --git a/linux/drivers/media/video/pvrusb2/pvrusb2-hdw-internal.h b/linux/drivers/media/video/pvrusb2/pvrusb2-hdw-internal.h index c28fe6f49..07bc0de55 100644 --- a/linux/drivers/media/video/pvrusb2/pvrusb2-hdw-internal.h +++ b/linux/drivers/media/video/pvrusb2/pvrusb2-hdw-internal.h @@ -85,6 +85,8 @@ struct pvr2_ctl_info { /* Control's implementation */ pvr2_ctlf_get_value get_value; /* Get its value */ + pvr2_ctlf_get_value get_min_value; /* Get minimum allowed value */ + pvr2_ctlf_get_value get_max_value; /* Get maximum allowed value */ pvr2_ctlf_set_value set_value; /* Set its value */ pvr2_ctlf_val_to_sym val_to_sym; /* Custom convert value->symbol */ pvr2_ctlf_sym_to_val sym_to_val; /* Custom convert symbol->value */ |