mirror of
https://gitlab.freedesktop.org/gstreamer/gstreamer.git
synced 2024-07-01 04:10:41 +00:00
49ac382b47
This adds a property to select the maximum number of threads to use for conversion and scaling. During processing, each plane is split into an equal number of consecutive lines that are then processed by each thread. During tests, this gave up to 1.8x speedup with 2 threads and up to 3.2x speedup with 4 threads when converting e.g. 1080p to 4k in v210. https://bugzilla.gnome.org/show_bug.cgi?id=778974
108 lines
3.2 KiB
C
108 lines
3.2 KiB
C
/* GStreamer
|
|
* Copyright (C) <1999> Erik Walthinsen <omega@cse.ogi.edu>
|
|
*
|
|
* This library is free software; you can redistribute it and/or
|
|
* modify it under the terms of the GNU Library General Public
|
|
* License as published by the Free Software Foundation; either
|
|
* version 2 of the License, or (at your option) any later version.
|
|
*
|
|
* This library is distributed in the hope that it will be useful,
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
|
* Library General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU Library General Public
|
|
* License along with this library; if not, write to the
|
|
* Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
|
|
* Boston, MA 02110-1301, USA.
|
|
*/
|
|
|
|
#ifndef __GST_VIDEO_SCALE_H__
|
|
#define __GST_VIDEO_SCALE_H__
|
|
|
|
#include <gst/gst.h>
|
|
#include <gst/video/video.h>
|
|
#include <gst/video/gstvideofilter.h>
|
|
|
|
G_BEGIN_DECLS
|
|
|
|
#define GST_TYPE_VIDEO_SCALE \
|
|
(gst_video_scale_get_type())
|
|
#define GST_VIDEO_SCALE(obj) \
|
|
(G_TYPE_CHECK_INSTANCE_CAST((obj),GST_TYPE_VIDEO_SCALE,GstVideoScale))
|
|
#define GST_VIDEO_SCALE_CLASS(klass) \
|
|
(G_TYPE_CHECK_CLASS_CAST((klass),GST_TYPE_VIDEO_SCALE,GstVideoScaleClass))
|
|
#define GST_IS_VIDEO_SCALE(obj) \
|
|
(G_TYPE_CHECK_INSTANCE_TYPE((obj),GST_TYPE_VIDEO_SCALE))
|
|
#define GST_IS_VIDEO_SCALE_CLASS(klass) \
|
|
(G_TYPE_CHECK_CLASS_TYPE((klass),GST_TYPE_VIDEO_SCALE))
|
|
#define GST_VIDEO_SCALE_CAST(obj) ((GstVideoScale *)(obj))
|
|
|
|
|
|
/**
|
|
* GstVideoScaleMethod:
|
|
* @GST_VIDEO_SCALE_NEAREST: use nearest neighbour scaling (fast and ugly)
|
|
* @GST_VIDEO_SCALE_BILINEAR: use 2-tap bilinear scaling (slower but prettier).
|
|
* @GST_VIDEO_SCALE_4TAP: use a 4-tap sinc filter for scaling (slow).
|
|
* @GST_VIDEO_SCALE_LANCZOS: use a multitap Lanczos filter for scaling (slow).
|
|
* @GST_VIDEO_SCALE_BILINEAR2: use a multitap bilinear filter
|
|
* @GST_VIDEO_SCALE_SINC: use a multitap sinc filter
|
|
* @GST_VIDEO_SCALE_HERMITE: use a multitap bicubic Hermite filter
|
|
* @GST_VIDEO_SCALE_SPLINE: use a multitap bicubic spline filter
|
|
* @GST_VIDEO_SCALE_CATROM: use a multitap bicubic Catmull-Rom filter
|
|
* @GST_VIDEO_SCALE_MITCHELL: use a multitap bicubic Mitchell filter
|
|
*
|
|
* The videoscale method to use.
|
|
*/
|
|
typedef enum {
|
|
GST_VIDEO_SCALE_NEAREST,
|
|
GST_VIDEO_SCALE_BILINEAR,
|
|
GST_VIDEO_SCALE_4TAP,
|
|
GST_VIDEO_SCALE_LANCZOS,
|
|
|
|
GST_VIDEO_SCALE_BILINEAR2,
|
|
GST_VIDEO_SCALE_SINC,
|
|
GST_VIDEO_SCALE_HERMITE,
|
|
GST_VIDEO_SCALE_SPLINE,
|
|
GST_VIDEO_SCALE_CATROM,
|
|
GST_VIDEO_SCALE_MITCHELL
|
|
} GstVideoScaleMethod;
|
|
|
|
typedef struct _GstVideoScale GstVideoScale;
|
|
typedef struct _GstVideoScaleClass GstVideoScaleClass;
|
|
|
|
/**
|
|
* GstVideoScale:
|
|
*
|
|
* Opaque data structure
|
|
*/
|
|
struct _GstVideoScale {
|
|
GstVideoFilter element;
|
|
|
|
/* properties */
|
|
GstVideoScaleMethod method;
|
|
gboolean add_borders;
|
|
double sharpness;
|
|
double sharpen;
|
|
gboolean dither;
|
|
int submethod;
|
|
double envelope;
|
|
gboolean gamma_decode;
|
|
gint n_threads;
|
|
|
|
GstVideoConverter *convert;
|
|
|
|
gint borders_h;
|
|
gint borders_w;
|
|
};
|
|
|
|
struct _GstVideoScaleClass {
|
|
GstVideoFilterClass parent_class;
|
|
};
|
|
|
|
G_GNUC_INTERNAL GType gst_video_scale_get_type (void);
|
|
|
|
G_END_DECLS
|
|
|
|
#endif /* __GST_VIDEO_SCALE_H__ */
|