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f3fd4d7e90
Since d0133a2d11 "videoconvert: Allow
passthrough for ANY caps features" videoconvert will always claim that
it supports any kind of memory which is true in very specific case (when
it is running in passthrough mode). To get elements that autoplug
converters depending on the caps running in the pipeline (like
autovideoconvert), we need to have converters no lie about what they can
do when queried `accept_caps` or `query_caps`.
This still accepts any caps feature as before but it introduces
a restriction in the way we handle memory capsfeatures.
We keep previous behaviour in videoconvert and videoscale.
Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/898>
76 lines
2.5 KiB
C
76 lines
2.5 KiB
C
/* GStreamer
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* Copyright (C) <1999> Erik Walthinsen <omega@cse.ogi.edu>
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* Copyright (C) 2020 Thibault Saunier <tsaunier@igalia.com>
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Library General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Library General Public License for more details.
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*
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* You should have received a copy of the GNU Library General Public
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* License along with this library; if not, write to the
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* Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
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* Boston, MA 02110-1301, USA.
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*/
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#ifndef __GST_VIDEO_CONVERT_SCALE_H__
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#define __GST_VIDEO_CONVERT_SCALE_H__
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#include <gst/gst.h>
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#include <gst/video/video.h>
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#include <gst/video/gstvideofilter.h>
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G_BEGIN_DECLS
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#define GST_TYPE_VIDEO_CONVERT_SCALE (gst_video_convert_scale_get_type())
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#define GST_VIDEO_CONVERT_SCALE_CAST(obj) ((GstVideoConvertScale *)(obj))
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G_DECLARE_DERIVABLE_TYPE (GstVideoConvertScale, gst_video_convert_scale, GST, VIDEO_CONVERT_SCALE,
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GstVideoFilter)
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struct _GstVideoConvertScaleClass
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{
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GstVideoFilterClass parent;
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gboolean any_memory;
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};
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/**
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* GstVideoScaleMethod:
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* @GST_VIDEO_SCALE_NEAREST: use nearest neighbour scaling (fast and ugly)
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* @GST_VIDEO_SCALE_BILINEAR: use 2-tap bilinear scaling (slower but prettier).
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* @GST_VIDEO_SCALE_4TAP: use a 4-tap sinc filter for scaling (slow).
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* @GST_VIDEO_SCALE_LANCZOS: use a multitap Lanczos filter for scaling (slow).
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* @GST_VIDEO_SCALE_BILINEAR2: use a multitap bilinear filter
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* @GST_VIDEO_SCALE_SINC: use a multitap sinc filter
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* @GST_VIDEO_SCALE_HERMITE: use a multitap bicubic Hermite filter
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* @GST_VIDEO_SCALE_SPLINE: use a multitap bicubic spline filter
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* @GST_VIDEO_SCALE_CATROM: use a multitap bicubic Catmull-Rom filter
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* @GST_VIDEO_SCALE_MITCHELL: use a multitap bicubic Mitchell filter
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*
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* The videoscale method to use.
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*/
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typedef enum {
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GST_VIDEO_SCALE_NEAREST,
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GST_VIDEO_SCALE_BILINEAR,
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GST_VIDEO_SCALE_4TAP,
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GST_VIDEO_SCALE_LANCZOS,
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GST_VIDEO_SCALE_BILINEAR2,
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GST_VIDEO_SCALE_SINC,
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GST_VIDEO_SCALE_HERMITE,
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GST_VIDEO_SCALE_SPLINE,
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GST_VIDEO_SCALE_CATROM,
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GST_VIDEO_SCALE_MITCHELL
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} GstVideoScaleMethod;
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GST_ELEMENT_REGISTER_DECLARE (videoconvertscale);
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G_END_DECLS
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#endif /* __GST_VIDEO_CONVERT_SCALE_H__ */
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