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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:
- *
- * #GST_TYPE_VIDEO_DITHER_METHOD, 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;
- GstVideoScaler * gst_video_scaler_new (GstVideoResamplerMethod method,
- GstVideoScalerFlags flags,
- guint n_taps,
- guint in_size, guint out_size,
- GstStructure * options);
- void gst_video_scaler_free (GstVideoScaler *scale);
- guint gst_video_scaler_get_max_taps (GstVideoScaler *scale);
- const gdouble * gst_video_scaler_get_coeff (GstVideoScaler *scale,
- guint out_offset,
- guint *in_offset,
- guint *n_taps);
- void gst_video_scaler_horizontal (GstVideoScaler *scale,
- GstVideoFormat format,
- gpointer src, gpointer dest,
- guint dest_offset, guint width);
- void gst_video_scaler_vertical (GstVideoScaler *scale,
- GstVideoFormat format,
- gpointer src_lines[], gpointer dest,
- guint dest_offset, guint width);
- GstVideoScaler * gst_video_scaler_combine_packed_YUV (GstVideoScaler * y_scale,
- GstVideoScaler *uv_scale,
- GstVideoFormat in_format,
- GstVideoFormat out_format);
- 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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