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v4l2: better handle quirks activation
This way we can activate deactivate those quirks all at once at one place. https://bugzilla.gnome.org/show_bug.cgi?id=720568
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parent
092e7605d3
commit
203e245134
3 changed files with 12 additions and 5 deletions
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@ -1830,11 +1830,7 @@ gst_v4l2_object_probe_caps_for_format_and_size (GstV4l2Object * v4l2object,
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gint int_width = width;
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gint int_height = height;
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if (!strcmp ((char *) v4l2object->vcap.driver, "uvcvideo")) {
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/*
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* UVC devices are never interlaced, and doing VIDIOC_TRY_FMT on them
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* causes expensive and slow USB IO, so don't probe them for interlaced
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*/
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if (v4l2object->never_interlaced) {
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interlaced = FALSE;
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} else {
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/* Interlaced detection using VIDIOC_TRY/S_FMT */
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@ -174,6 +174,10 @@ struct _GstV4l2Object {
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GstV4l2GetInOutFunction get_in_out_func;
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GstV4l2SetInOutFunction set_in_out_func;
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GstV4l2UpdateFpsFunction update_fps_func;
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/* Quirks */
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/* Skips interlacing probes */
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gboolean never_interlaced;
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};
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struct _GstV4l2ObjectClassHelper {
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@ -581,6 +581,13 @@ gst_v4l2_open (GstV4l2Object * v4l2object)
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if (v4l2object->extra_controls)
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gst_v4l2_set_controls (v4l2object, v4l2object->extra_controls);
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/* UVC devices are never interlaced, and doing VIDIOC_TRY_FMT on them
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* causes expensive and slow USB IO, so don't probe them for interlaced
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*/
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if (!strcmp ((char *) v4l2object->vcap.driver, "uvcusb")) {
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v4l2object->never_interlaced = TRUE;
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}
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return TRUE;
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/* ERRORS */
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