gstreamer/gst-libs/gst/video/video-converter.h

/* Video conversion api function
 * 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_CONVERTER_H__
#define __GST_VIDEO_CONVERTER_H__

#include <gst/video/video.h>

G_BEGIN_DECLS

/**
 * GST_VIDEO_CONVERTER_OPT_RESAMPLER_METHOD:
 *
 * #GST_TYPE_RESAMPLER_METHOD, The resampler method to use for
 * resampling. Other options for the resampler can be used, see
 * the #GstResampler. Default is #GST_RESAMPLER_METHOD_CUBIC
 */
#define GST_VIDEO_CONVERTER_OPT_RESAMPLER_METHOD   "GstVideoConverter.resampler-method"
/**
 * GST_VIDEO_CONVERTER_OPT_CHROMA_RESAMPLER_METHOD:
 *
 * #GST_TYPE_RESAMPLER_METHOD, The resampler method to use for
 * chroma resampling. Other options for the resampler can be used, see
 * the #GstResampler. Default is #GST_RESAMPLER_METHOD_LINEAR
 */
#define GST_VIDEO_CONVERTER_OPT_CHROMA_RESAMPLER_METHOD   "GstVideoConverter.chroma-resampler-method"
/**
 * GST_VIDEO_CONVERTER_OPT_RESAMPLER_TAPS:
 *
 * #G_TYPE_UINT, The number of taps for the resampler.
 * Default is 0: let the resampler choose a good value.
 */
#define GST_VIDEO_CONVERTER_OPT_RESAMPLER_TAPS   "GstVideoConverter.resampler-taps"

/**
 * GST_VIDEO_CONVERTER_OPT_DITHER_METHOD:
 *
 * #GST_TYPE_VIDEO_DITHER_METHOD, The dither method to use when
 * changing bit depth.
 * Default is #GST_VIDEO_DITHER_BAYER.
 */
#define GST_VIDEO_CONVERTER_OPT_DITHER_METHOD   "GstVideoConverter.dither-method"

/**
 * GST_VIDEO_CONVERTER_OPT_DITHER_QUANTIZATION:
 *
 * #G_TYPE_UINT, The quantization amount to dither to. Components will be
 * quantized to multiples of this value.
 * Default is 1
 */
#define GST_VIDEO_CONVERTER_OPT_DITHER_QUANTIZATION   "GstVideoConverter.dither-quantization"

/**
 * GST_VIDEO_CONVERTER_OPT_SRC_X:
 *
 * #G_TYPE_INT, source x position to start conversion, default 0
 */
#define GST_VIDEO_CONVERTER_OPT_SRC_X   "GstVideoConverter.src-x"
/**
 * GST_VIDEO_CONVERTER_OPT_SRC_Y:
 *
 * #G_TYPE_INT, source y position to start conversion, default 0
 */
#define GST_VIDEO_CONVERTER_OPT_SRC_Y   "GstVideoConverter.src-y"
/**
 * GST_VIDEO_CONVERTER_OPT_SRC_WIDTH:
 *
 * #G_TYPE_INT, source width to convert, default source width
 */
#define GST_VIDEO_CONVERTER_OPT_SRC_WIDTH   "GstVideoConverter.src-width"
/**
 * GST_VIDEO_CONVERTER_OPT_SRC_HEIGHT:
 *
 * #G_TYPE_INT, source height to convert, default source height
 */
#define GST_VIDEO_CONVERTER_OPT_SRC_HEIGHT   "GstVideoConverter.src-height"

/**
 * GST_VIDEO_CONVERTER_OPT_DEST_X:
 *
 * #G_TYPE_INT, x position in the destination frame, default 0
 */
#define GST_VIDEO_CONVERTER_OPT_DEST_X   "GstVideoConverter.dest-x"
/**
 * GST_VIDEO_CONVERTER_OPT_DEST_Y:
 *
 * #G_TYPE_INT, y position in the destination frame, default 0
 */
#define GST_VIDEO_CONVERTER_OPT_DEST_Y   "GstVideoConverter.dest-y"
/**
 * GST_VIDEO_CONVERTER_OPT_DEST_WIDTH:
 *
 * #G_TYPE_INT, width in the destination frame, default destination width
 */
#define GST_VIDEO_CONVERTER_OPT_DEST_WIDTH   "GstVideoConverter.dest-width"
/**
 * GST_VIDEO_CONVERTER_OPT_DEST_HEIGHT:
 *
 * #G_TYPE_INT, height in the destination frame, default destination height
 */
#define GST_VIDEO_CONVERTER_OPT_DEST_HEIGHT   "GstVideoConverter.dest-height"

/**
 * GST_VIDEO_CONVERTER_OPT_FILL_BORDER:
 *
 * #G_TYPE_BOOLEAN, if the destination rectangle does not fill the complete
 * destination image, render a border with
 * #GST_VIDEO_CONVERTER_OPT_BORDER_ARGB. Otherwise the unusded pixels in the
 * destination are untouched. Default %TRUE.
 */
#define GST_VIDEO_CONVERTER_OPT_FILL_BORDER   "GstVideoConverter.fill-border"
/**
 * GST_VIDEO_CONVERTER_OPT_ALPHA_VALUE:
 *
 * #G_TYPE_DOUBLE, the alpha color value to use.
 * Default to 1.0
 */
#define GST_VIDEO_CONVERTER_OPT_ALPHA_VALUE   "GstVideoConverter.alpha-value"
/**
 * GST_VIDEO_CONVERTER_OPT_ALPHA_MODE:
 *
 * #G_TYPE_STRING, the alpha mode to use.
 *
 * "copy": When input and output have alpha, it will be copied.
 *         When the input has no alpha, alpha will be set to
 *         GST_VIDEO_CONVERTER_OPT_ALPHA_VALUE
 * "set": set all alpha to #GST_VIDEO_CONVERTER_OPT_ALPHA_VALUE
 * "mult": multiply all alpha with #GST_VIDEO_CONVERTER_OPT_ALPHA_VALUE.
 *         When the input format has no alpha but the output format has,
 *         the alpha value will be set to
 *         #GST_VIDEO_CONVERTER_OPT_ALPHA_VALUE
 *
 * Default to "none".
 */
#define GST_VIDEO_CONVERTER_OPT_ALPHA_MODE   "GstVideoConverter.alpha-mode"
/**
 * GST_VIDEO_CONVERTER_OPT_BORDER_ARGB:
 *
 * #G_TYPE_UINT, the border color to use if #GST_VIDEO_CONVERTER_OPT_FILL_BORDER
 * is set to %TRUE. The color is in ARGB format.
 * Default 0xff000000
 */
#define GST_VIDEO_CONVERTER_OPT_BORDER_ARGB   "GstVideoConverter.border-argb"
/**
 * GST_VIDEO_CONVERTER_OPT_CHROMA_MODE:
 *
 * #G_TYPE_STRING, set the chroma resample mode subsampled formats.
 *
 * "full": do full chroma up and down sampling
 * "upsample-only": only perform chroma upsampling
 * "downsample-only": only perform chroma downsampling
 * "none": disable chroma resampling
 *
 * Default "full"
 */
#define GST_VIDEO_CONVERTER_OPT_CHROMA_MODE   "GstVideoConverter.chroma-mode"
/**
 * GST_VIDEO_CONVERTER_OPT_MATRIX_MODE:
 *
 * #G_TYPE_STRING, set the color matrix conversion mode for converting
 *     between Y'PbPr and non-linear RGB (R'G'B').
 *
 * "full": do conversion between color matrices
 * "input-only": use the input color matrix to convert to and from R'G'B
 * "output-only": use the output color matrix to convert to and from R'G'B
 * "none": disable color matrix conversion.
 *
 * Default "full"
 */
#define GST_VIDEO_CONVERTER_OPT_MATRIX_MODE   "GstVideoConverter.matrix-mode"
/**
 * GST_VIDEO_CONVERTER_OPT_GAMMA_MODE:
 *
 * #G_TYPE_STRING, set the gamma mode.
 *
 * "none": disable gamma handling
 * "remap": convert between input and output gamma
 *
 * Default "none"
 */
#define GST_VIDEO_CONVERTER_OPT_GAMMA_MODE   "GstVideoConverter.gamma-mode"
/**
 * GST_VIDEO_CONVERTER_OPT_PRIMARIES_MODE:
 *
 * #G_TYPE_STRING, set the primaries conversion mode.
 *
 * "none": disable conversion between primaries
 * "merge-only": do conversion between primaries only when it can be merged
 *               with color matrix conversion.
 * "fast": fast conversion between primaries
 *
 * Default "none"
 */
#define GST_VIDEO_CONVERTER_OPT_PRIMARIES_MODE   "GstVideoConverter.primaries-mode"

typedef struct _GstVideoConverter GstVideoConverter;

GstVideoConverter *  gst_video_converter_new            (GstVideoInfo *in_info,
                                                         GstVideoInfo *out_info,
                                                         GstStructure *config);
void                 gst_video_converter_free           (GstVideoConverter * convert);

gboolean             gst_video_converter_set_config     (GstVideoConverter * convert, GstStructure *config);
const GstStructure * gst_video_converter_get_config     (GstVideoConverter * convert);

void                 gst_video_converter_frame          (GstVideoConverter * convert,
                                                         const GstVideoFrame *src, GstVideoFrame *dest);


G_END_DECLS

#endif /* __GST_VIDEO_CONVERTER_H__ */