gstreamer/gst-libs/gst/video/video-converter.h
Wim Taymans 495873298c video-converter: don't overwrite border alpha
Let border alpha and image alpha be independent.
2015-02-25 11:39:20 +01:00

228 lines
7.7 KiB
C

/* 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__ */