1 /* GStreamer JPEG 2000 Sampling 2 * Copyright (C) <2016> Grok Image Compression Inc. 3 * @author Aaron Boxer <boxerab@gmail.com> 4 * 5 * This library is free software; you can redistribute it and/or 6 * modify it under the terms of the GNU Library General Public 7 * License as published by the Free Software Foundation; either 8 * version 2 of the License, or (at your option) any later version. 9 * 10 * This library is distributed in the hope that it will be useful, 11 * but WITHOUT ANY WARRANTY; without even the implied warranty of 12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 13 * Library General Public License for more details. 14 * 15 * You should have received a copy of the GNU Library General Public 16 * License along with this library; if not, write to the 17 * Free Software Foundation, Inc., 51 Franklin St, Fifth Floor, 18 * Boston, MA 02110-1301, USA. 19 */ 20 21 #ifndef __GST_JPEG2000_SAMPLING_H__ 22 #define __GST_JPEG2000_SAMPLING_H__ 23 24 #include <gst/gst.h> 25 #include <gst/codecparsers/codecparsers-prelude.h> 26 27 /** 28 * GstJPEG2000Sampling: 29 * Sampling values from RF 5371 for JPEG 2000 over RTP : https://datatracker.ietf.org/doc/rfc5371/C 30 * Note: sampling extensions that are not listed in the RFC are signified by an _EXT at the end of the enum 31 * 32 * @GST_JPEG2000_SAMPLING_NONE: no sampling 33 * @GST_JPEG2000_SAMPLING_RGB: standard Red, Green, Blue color space. 34 * @GST_JPEG2000_SAMPLING_BGR: standard Blue, Green, Red color space. 35 * @GST_JPEG2000_SAMPLING_RGBA: standard Red, Green, Blue, Alpha color space. 36 * @GST_JPEG2000_SAMPLING_BGRA: standard Blue, Green, Red, Alpha color space. 37 * @GST_JPEG2000_SAMPLING_YCbCr-4:4:4: standard YCbCr color space; no subsampling. 38 * @GST_JPEG2000_SAMPLING_YCbCr-4:2:2: standard YCbCr color space; Cb and Cr are subsampled horizontally by 1/2. 39 * @GST_JPEG2000_SAMPLING_YCbCr-4:2:0: standard YCbCr color space; Cb and Cr are subsampled horizontally and vertically by 1/2. 40 * @GST_JPEG2000_SAMPLING_YCbCr-4:1:1: standard YCbCr color space; Cb and Cr are subsampled vertically by 1/4. 41 * @GST_JPEG2000_SAMPLING_GRAYSCALE: basically, a single component image of just multilevels of grey. 42 * @GST_JPEG2000_SAMPLING_YBRA4444_EXT: standard YCbCr color space, alpha channel, no subsampling, 43 */ 44 typedef enum 45 { 46 GST_JPEG2000_SAMPLING_NONE, 47 GST_JPEG2000_SAMPLING_RGB, 48 GST_JPEG2000_SAMPLING_BGR, 49 GST_JPEG2000_SAMPLING_RGBA, 50 GST_JPEG2000_SAMPLING_BGRA, 51 GST_JPEG2000_SAMPLING_YBR444, 52 GST_JPEG2000_SAMPLING_YBR422, 53 GST_JPEG2000_SAMPLING_YBR420, 54 GST_JPEG2000_SAMPLING_YBR410, 55 GST_JPEG2000_SAMPLING_GRAYSCALE, 56 GST_JPEG2000_SAMPLING_YBRA4444_EXT 57 } GstJPEG2000Sampling; 58 59 /* GST_JPEG2000_SAMPLING_LIST: sampling strings in list form, for use in caps */ 60 #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\"}" 61 62 GST_CODEC_PARSERS_API 63 const gchar *gst_jpeg2000_sampling_to_string (GstJPEG2000Sampling sampling); 64 65 GST_CODEC_PARSERS_API 66 GstJPEG2000Sampling gst_jpeg2000_sampling_from_string (const gchar * 67 sampling_string); 68 69 GST_CODEC_PARSERS_API 70 gboolean gst_jpeg2000_sampling_is_rgb (GstJPEG2000Sampling sampling); 71 72 GST_CODEC_PARSERS_API 73 gboolean gst_jpeg2000_sampling_is_yuv (GstJPEG2000Sampling sampling); 74 75 GST_CODEC_PARSERS_API 76 gboolean gst_jpeg2000_sampling_is_mono (GstJPEG2000Sampling sampling); 77 78 79 /** 80 * GstJPEG2000Colorspace: 81 * @GST_JPEG2000_COLORSPACE_NONE: no color space 82 * @GST_JPEG2000_COLORSPACE_RGB: standard RGB color space 83 * @GST_JPEG2000_COLORSPACE_YUV: standard YUV color space 84 * @GST_JPEG2000_COLORSPACE_GRAY: monochrome color space 85 */ 86 typedef enum 87 { 88 GST_JPEG2000_COLORSPACE_NONE, 89 GST_JPEG2000_COLORSPACE_RGB, 90 GST_JPEG2000_COLORSPACE_YUV, 91 GST_JPEG2000_COLORSPACE_GRAY 92 } GstJPEG2000Colorspace; 93 94 GST_CODEC_PARSERS_API 95 const gchar *gst_jpeg2000_colorspace_to_string (GstJPEG2000Colorspace 96 colorspace); 97 98 GST_CODEC_PARSERS_API 99 GstJPEG2000Colorspace gst_jpeg2000_colorspace_from_string (const gchar * 100 colorspace_string); 101 102 /* GST_JPEG2000_COLORSPACE_LIST: color space strings in list form, for use in caps */ 103 #define GST_JPEG2000_COLORSPACE_LIST "colorspace = (string) { \"sRGB\", \"sYUV\", \"GRAY\" }" 104 105 #endif 106