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/* GStreamer
* Copyright (C) <2014> Wim Taymans <wim.taymans@gmail.com>
*
* 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_SCALER_H__
#define __GST_VIDEO_SCALER_H__
#include <gst/gst.h>
#include <gst/video/video-format.h>
#include <gst/video/video-color.h>
#include <gst/video/video-resampler.h>
G_BEGIN_DECLS
/**
* GST_VIDEO_SCALER_OPT_DITHER_METHOD:
*
* #GstVideoDitherMethod, The dither method to use for propagating
* quatization errors.
*/
#define GST_VIDEO_SCALER_OPT_DITHER_METHOD "GstVideoScaler.dither-method"
/**
* GstVideoScalerFlags:
* @GST_VIDEO_SCALER_FLAG_NONE: no flags
* @GST_VIDEO_SCALER_FLAG_INTERLACED: Set up a scaler for interlaced content
*
* Different scale flags.
*/
typedef enum {
GST_VIDEO_SCALER_FLAG_NONE = (0),
GST_VIDEO_SCALER_FLAG_INTERLACED = (1 << 0),
} GstVideoScalerFlags;
typedef struct _GstVideoScaler GstVideoScaler;
GST_VIDEO_API
GstVideoScaler * gst_video_scaler_new (GstVideoResamplerMethod method,
GstVideoScalerFlags flags,
guint n_taps,
guint in_size, guint out_size,
GstStructure * options);
GST_VIDEO_API
void gst_video_scaler_free (GstVideoScaler *scale);
GST_VIDEO_API
guint gst_video_scaler_get_max_taps (GstVideoScaler *scale);
GST_VIDEO_API
const gdouble * gst_video_scaler_get_coeff (GstVideoScaler *scale,
guint out_offset,
guint *in_offset,
guint *n_taps);
GST_VIDEO_API
void gst_video_scaler_horizontal (GstVideoScaler *scale,
GstVideoFormat format,
gpointer src, gpointer dest,
guint dest_offset, guint width);
GST_VIDEO_API
void gst_video_scaler_vertical (GstVideoScaler *scale,
GstVideoFormat format,
gpointer src_lines[], gpointer dest,
guint dest_offset, guint width);
GST_VIDEO_API
GstVideoScaler * gst_video_scaler_combine_packed_YUV (GstVideoScaler * y_scale,
GstVideoScaler *uv_scale,
GstVideoFormat in_format,
GstVideoFormat out_format);
GST_VIDEO_API
void gst_video_scaler_2d (GstVideoScaler *hscale,
GstVideoScaler *vscale,
GstVideoFormat format,
gpointer src, gint src_stride,
gpointer dest, gint dest_stride,
guint x, guint y,
guint width, guint height);
G_END_DECLS
#endif /* __GST_VIDEO_SCALER_H__ */
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