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104 lines
4 KiB
C
104 lines
4 KiB
C
/* GStreamer JPEG 2000 Sampling
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* Copyright (C) <2016> Grok Image Compression Inc.
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* @author Aaron Boxer <boxerab@gmail.com>
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Library General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Library General Public License for more details.
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*
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* You should have received a copy of the GNU Library General Public
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* License along with this library; if not, write to the
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* Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
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* Boston, MA 02110-1301, USA.
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*/
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#ifndef __GST_JPEG2000_SAMPLING_H__
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#define __GST_JPEG2000_SAMPLING_H__
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#include <gst/gst.h>
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/**
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* GstJPEG2000Sampling:
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* Sampling values from RF 5371 for JPEG 2000 over RTP : https://datatracker.ietf.org/doc/rfc5371/C
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* Note: sampling extensions that are not listed in the RFC are signified by an _EXT at the end of the enum
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*
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* @GST_JPEG2000_SAMPLING_NONE: no sampling
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* @GST_JPEG2000_SAMPLING_RGB: standard Red, Green, Blue color space.
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* @GST_JPEG2000_SAMPLING_BGR: standard Blue, Green, Red color space.
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* @GST_JPEG2000_SAMPLING_RGBA: standard Red, Green, Blue, Alpha color space.
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* @GST_JPEG2000_SAMPLING_BGRA: standard Blue, Green, Red, Alpha color space.
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* @GST_JPEG2000_SAMPLING_YCbCr-4:4:4: standard YCbCr color space; no subsampling.
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* @GST_JPEG2000_SAMPLING_YCbCr-4:2:2: standard YCbCr color space; Cb and Cr are subsampled horizontally by 1/2.
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* @GST_JPEG2000_SAMPLING_YCbCr-4:2:0: standard YCbCr color space; Cb and Cr are subsampled horizontally and vertically by 1/2.
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* @GST_JPEG2000_SAMPLING_YCbCr-4:1:1: standard YCbCr color space; Cb and Cr are subsampled vertically by 1/4.
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* @GST_JPEG2000_SAMPLING_GRAYSCALE: basically, a single component image of just multilevels of grey.
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* @GST_JPEG2000_SAMPLING_YBRA4444_EXT: standard YCbCr color space, alpha channel, no subsampling,
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*/
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typedef enum
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{
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GST_JPEG2000_SAMPLING_NONE,
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GST_JPEG2000_SAMPLING_RGB,
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GST_JPEG2000_SAMPLING_BGR,
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GST_JPEG2000_SAMPLING_RGBA,
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GST_JPEG2000_SAMPLING_BGRA,
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GST_JPEG2000_SAMPLING_YBR444,
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GST_JPEG2000_SAMPLING_YBR422,
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GST_JPEG2000_SAMPLING_YBR420,
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GST_JPEG2000_SAMPLING_YBR410,
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GST_JPEG2000_SAMPLING_GRAYSCALE,
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GST_JPEG2000_SAMPLING_YBRA4444_EXT
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} GstJPEG2000Sampling;
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/* GST_JPEG2000_SAMPLING_LIST: sampling strings in list form, for use in caps */
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#define GST_JPEG2000_SAMPLING_LIST "sampling = (string) {\"RGB\", \"BGR\", \"RGBA\", \"BGRA\", \"YCbCr-4:4:4\", \"YCbCr-4:2:2\", \"YCbCr-4:2:0\", \"YCbCr-4:1:1\", \"GRAYSCALE\" , \"YCbCrA-4:4:4:4\"}"
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GST_EXPORT
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const gchar *gst_jpeg2000_sampling_to_string (GstJPEG2000Sampling sampling);
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GST_EXPORT
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GstJPEG2000Sampling gst_jpeg2000_sampling_from_string (const gchar *
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sampling_string);
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GST_EXPORT
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gboolean gst_jpeg2000_sampling_is_rgb (GstJPEG2000Sampling sampling);
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GST_EXPORT
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gboolean gst_jpeg2000_sampling_is_yuv (GstJPEG2000Sampling sampling);
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GST_EXPORT
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gboolean gst_jpeg2000_sampling_is_mono (GstJPEG2000Sampling sampling);
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/**
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* GstJPEG2000Colorspace:
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* @GST_JPEG2000_COLORSPACE_NONE: no color space
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* @GST_JPEG2000_COLORSPACE_RGB: standard RGB color space
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* @GST_JPEG2000_COLORSPACE_YUV: standard YUV color space
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* @GST_JPEG2000_COLORSPACE_GRAY: monochrome color space
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*/
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typedef enum
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{
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GST_JPEG2000_COLORSPACE_NONE,
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GST_JPEG2000_COLORSPACE_RGB,
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GST_JPEG2000_COLORSPACE_YUV,
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GST_JPEG2000_COLORSPACE_GRAY
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} GstJPEG2000Colorspace;
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GST_EXPORT
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const gchar *gst_jpeg2000_colorspace_to_string (GstJPEG2000Colorspace
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colorspace);
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GST_EXPORT
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GstJPEG2000Colorspace gst_jpeg2000_colorspace_from_string (const gchar *
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colorspace_string);
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/* GST_JPEG2000_COLORSPACE_LIST: color space strings in list form, for use in caps */
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#define GST_JPEG2000_COLORSPACE_LIST "colorspace = (string) { \"sRGB\", \"sYUV\", \"GRAY\" }"
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#endif
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