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v4l2: handle empty properties gracefully

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When a property is not found or is empty, go on to the next format
instead of failing.

See #3959
This commit is contained in:
Wim Taymans 2024-04-10 11:06:44 +02:00
parent 51c2b02e9e
commit 61af61a4b3
1 changed files with 5 additions and 7 deletions
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12
spa/plugins/v4l2/v4l2-utils.c
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@ -386,9 +386,8 @@ enum_filter_format(uint32_t media_type, int32_t media_subtype,
return -ENOENT;
val = spa_pod_get_values(&p->value, &n_values, &choice);
if (val->type != SPA_TYPE_Id)
return -EINVAL;
if (val->type != SPA_TYPE_Id || n_values == 0)
return SPA_VIDEO_FORMAT_UNKNOWN;
values = SPA_POD_BODY(val);
@ -614,7 +613,7 @@ do_enum_fmt:
goto do_frmsize;
val = spa_pod_get_values(&p->value, &n_vals, &choice);
if (val->type != SPA_TYPE_Rectangle)
if (val->type != SPA_TYPE_Rectangle || n_vals == 0)
goto enum_end;
if (choice == SPA_CHOICE_None) {
@ -652,7 +651,7 @@ do_enum_fmt:
goto have_size;
val = spa_pod_get_values(&p->value, &n_values, &choice);
if (val->type != SPA_TYPE_Rectangle)
if (val->type != SPA_TYPE_Rectangle || n_values == 0)
goto have_size;
values = SPA_POD_BODY_CONST(val);
@ -772,8 +771,7 @@ do_enum_fmt:
goto have_framerate;
val = spa_pod_get_values(&p->value, &n_values, &choice);
if (val->type != SPA_TYPE_Fraction)
if (val->type != SPA_TYPE_Fraction || n_values == 0)
goto enum_end;
values = SPA_POD_BODY(val);