gstreamer/gst-libs/gst/video/video-converter.h
2019-05-13 11:34:08 -04:00

299 lines
9.6 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:
*
* #GstVideoResamplerMethod, The resampler method to use for
* resampling. Other options for the resampler can be used, see
* the #GstVideoResampler. Default is #GST_VIDEO_RESAMPLER_METHOD_CUBIC
*/
#define GST_VIDEO_CONVERTER_OPT_RESAMPLER_METHOD "GstVideoConverter.resampler-method"
/**
* GST_VIDEO_CONVERTER_OPT_CHROMA_RESAMPLER_METHOD:
*
* #GstVideoChromaMethod, The resampler method to use for
* chroma resampling. Other options for the resampler can be used, see
* the #GstVideoResampler. Default is #GST_VIDEO_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:
*
* #GstVideoDitherMethod, 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"
/**
* GstVideoAlphaMode:
* @GST_VIDEO_ALPHA_MODE_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
* @GST_VIDEO_ALPHA_MODE_SET: set all alpha to
* #GST_VIDEO_CONVERTER_OPT_ALPHA_VALUE
* @GST_VIDEO_ALPHA_MODE_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
*
* Different alpha modes.
*
* Since: 1.6
*/
typedef enum {
GST_VIDEO_ALPHA_MODE_COPY,
GST_VIDEO_ALPHA_MODE_SET,
GST_VIDEO_ALPHA_MODE_MULT
} GstVideoAlphaMode;
/**
* GST_VIDEO_CONVERTER_OPT_ALPHA_MODE:
*
* #GstVideoAlphaMode, the alpha mode to use.
* Default is #GST_VIDEO_ALPHA_MODE_COPY.
*/
#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"
/**
* GstVideoChromaMode:
* @GST_VIDEO_CHROMA_MODE_FULL: do full chroma up and down sampling
* @GST_VIDEO_CHROMA_MODE_UPSAMPLE_ONLY: only perform chroma upsampling
* @GST_VIDEO_CHROMA_MODE_DOWNSAMPLE_ONLY: only perform chroma downsampling
* @GST_VIDEO_CHROMA_MODE_NONE: disable chroma resampling
*
* Different chroma downsampling and upsampling modes
*
* Since: 1.6
*/
typedef enum {
GST_VIDEO_CHROMA_MODE_FULL,
GST_VIDEO_CHROMA_MODE_UPSAMPLE_ONLY,
GST_VIDEO_CHROMA_MODE_DOWNSAMPLE_ONLY,
GST_VIDEO_CHROMA_MODE_NONE
} GstVideoChromaMode;
/**
* GST_VIDEO_CONVERTER_OPT_CHROMA_MODE:
*
* #GstVideoChromaMode, set the chroma resample mode subsampled
* formats. Default is #GST_VIDEO_CHROMA_MODE_FULL.
*/
#define GST_VIDEO_CONVERTER_OPT_CHROMA_MODE "GstVideoConverter.chroma-mode"
/**
*GstVideoMatrixMode:
* @GST_VIDEO_MATRIX_MODE_FULL: do conversion between color matrices
* @GST_VIDEO_MATRIX_MODE_INPUT_ONLY: use the input color matrix to convert
* to and from R'G'B
* @GST_VIDEO_MATRIX_MODE_OUTPUT_ONLY: use the output color matrix to convert
* to and from R'G'B
* @GST_VIDEO_MATRIX_MODE_NONE: disable color matrix conversion.
*
* Different color matrix conversion modes
*
* Since: 1.6
*/
typedef enum {
GST_VIDEO_MATRIX_MODE_FULL,
GST_VIDEO_MATRIX_MODE_INPUT_ONLY,
GST_VIDEO_MATRIX_MODE_OUTPUT_ONLY,
GST_VIDEO_MATRIX_MODE_NONE
} GstVideoMatrixMode;
/**
* GST_VIDEO_CONVERTER_OPT_MATRIX_MODE:
*
* #GstVideoMatrixMode, set the color matrix conversion mode for
* converting between Y'PbPr and non-linear RGB (R'G'B').
* Default is #GST_VIDEO_MATRIX_MODE_FULL.
*/
#define GST_VIDEO_CONVERTER_OPT_MATRIX_MODE "GstVideoConverter.matrix-mode"
/**
* GstVideoGammaMode:
* @GST_VIDEO_GAMMA_MODE_NONE: disable gamma handling
* @GST_VIDEO_GAMMA_MODE_REMAP: convert between input and output gamma
* Different gamma conversion modes
*
* Since: 1.6
*/
typedef enum {
GST_VIDEO_GAMMA_MODE_NONE,
GST_VIDEO_GAMMA_MODE_REMAP
} GstVideoGammaMode;
/**
* GST_VIDEO_CONVERTER_OPT_GAMMA_MODE:
*
* #GstVideoGammaMode, set the gamma mode.
* Default is #GST_VIDEO_GAMMA_MODE_NONE.
*/
#define GST_VIDEO_CONVERTER_OPT_GAMMA_MODE "GstVideoConverter.gamma-mode"
/**
* GstVideoPrimariesMode:
* @GST_VIDEO_PRIMARIES_MODE_NONE: disable conversion between primaries
* @GST_VIDEO_PRIMARIES_MODE_MERGE_ONLY: do conversion between primaries only
* when it can be merged with color matrix conversion.
* @GST_VIDEO_PRIMARIES_MODE_FAST: fast conversion between primaries
*
* Different primaries conversion modes
*
* Since: 1.6
*/
typedef enum {
GST_VIDEO_PRIMARIES_MODE_NONE,
GST_VIDEO_PRIMARIES_MODE_MERGE_ONLY,
GST_VIDEO_PRIMARIES_MODE_FAST
} GstVideoPrimariesMode;
/**
* GST_VIDEO_CONVERTER_OPT_PRIMARIES_MODE:
*
* #GstVideoPrimariesMode, set the primaries conversion mode.
* Default is #GST_VIDEO_PRIMARIES_MODE_NONE.
*/
#define GST_VIDEO_CONVERTER_OPT_PRIMARIES_MODE "GstVideoConverter.primaries-mode"
/**
* GST_VIDEO_CONVERTER_OPT_THREADS:
*
* #G_TYPE_UINT, maximum number of threads to use. Default 1, 0 for the number
* of cores.
*/
#define GST_VIDEO_CONVERTER_OPT_THREADS "GstVideoConverter.threads"
typedef struct _GstVideoConverter GstVideoConverter;
GST_VIDEO_API
GstVideoConverter * gst_video_converter_new (GstVideoInfo *in_info,
GstVideoInfo *out_info,
GstStructure *config);
GST_VIDEO_API
void gst_video_converter_free (GstVideoConverter * convert);
GST_VIDEO_API
gboolean gst_video_converter_set_config (GstVideoConverter * convert, GstStructure *config);
GST_VIDEO_API
const GstStructure * gst_video_converter_get_config (GstVideoConverter * convert);
GST_VIDEO_API
void gst_video_converter_frame (GstVideoConverter * convert,
const GstVideoFrame *src, GstVideoFrame *dest);
G_END_DECLS
#endif /* __GST_VIDEO_CONVERTER_H__ */