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f4f3894836
Make sure we have the same number of taps for the Y and UV scalers so that the scalers can be merged correctly. Fixes https://bugzilla.gnome.org/show_bug.cgi?id=749764
90 lines
4 KiB
C
90 lines
4 KiB
C
/* GStreamer
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* Copyright (C) <2014> Wim Taymans <wim.taymans@gmail.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_SCALER_H__
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#define __GST_VIDEO_SCALER_H__
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#include <gst/gst.h>
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#include <gst/video/video-format.h>
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#include <gst/video/video-color.h>
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#include <gst/video/video-resampler.h>
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G_BEGIN_DECLS
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/**
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* GST_VIDEO_SCALER_OPT_DITHER_METHOD:
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*
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* #GST_TYPE_VIDEO_DITHER_METHOD, The dither method to use for propagating
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* quatization errors.
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*/
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#define GST_VIDEO_SCALER_OPT_DITHER_METHOD "GstVideoScaler.dither-method"
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/**
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* GstVideoScalerFlags:
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* @GST_VIDEO_SCALER_FLAG_NONE: no flags
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* @GST_VIDEO_SCALER_FLAG_INTERLACED: Set up a scaler for interlaced content
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*
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* Different scale flags.
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*/
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typedef enum {
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GST_VIDEO_SCALER_FLAG_NONE = (0),
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GST_VIDEO_SCALER_FLAG_INTERLACED = (1 << 0),
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} GstVideoScalerFlags;
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typedef struct _GstVideoScaler GstVideoScaler;
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GstVideoScaler * gst_video_scaler_new (GstVideoResamplerMethod method,
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GstVideoScalerFlags flags,
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guint n_taps,
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guint in_size, guint out_size,
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GstStructure * options);
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void gst_video_scaler_free (GstVideoScaler *scale);
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guint gst_video_scaler_get_max_taps (GstVideoScaler *scale);
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const gdouble * gst_video_scaler_get_coeff (GstVideoScaler *scale,
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guint out_offset,
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guint *in_offset,
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guint *n_taps);
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void gst_video_scaler_horizontal (GstVideoScaler *scale,
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GstVideoFormat format,
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gpointer src, gpointer dest,
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guint dest_offset, guint width);
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void gst_video_scaler_vertical (GstVideoScaler *scale,
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GstVideoFormat format,
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gpointer src_lines[], gpointer dest,
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guint dest_offset, guint width);
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GstVideoScaler * gst_video_scaler_combine_packed_YUV (GstVideoScaler * y_scale,
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GstVideoScaler *uv_scale,
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GstVideoFormat in_format,
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GstVideoFormat out_format);
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void gst_video_scaler_2d (GstVideoScaler *hscale,
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GstVideoScaler *vscale,
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GstVideoFormat format,
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gpointer src, gint src_stride,
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gpointer dest, gint dest_stride,
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guint x, guint y,
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guint width, guint height);
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G_END_DECLS
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#endif /* __GST_VIDEO_SCALER_H__ */
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