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3dc3a915ea
And always set the sampling field on the src caps, if necessary guessing a correct value for it from the colorspace field. Also, did some cleanup: removed sampling enum - redundant. https://bugzilla.gnome.org/show_bug.cgi?id=766236
86 lines
2.7 KiB
C
86 lines
2.7 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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/* Sampling values from RF 5371 for JPEG 2000 over RTP : https://datatracker.ietf.org/doc/rfc5371/C
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RGB: standard Red, Green, Blue color space.
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BGR: standard Blue, Green, Red color space.
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RGBA: standard Red, Green, Blue, Alpha color space.
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BGRA: standard Blue, Green, Red, Alpha color space.
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YCbCr-4:4:4: standard YCbCr color space; no subsampling.
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YCbCr-4:2:2: standard YCbCr color space; Cb and Cr are subsampled horizontally by 1/2.
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YCbCr-4:2:0: standard YCbCr color space; Cb and Cr are subsampled horizontally and vertically by 1/2.
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YCbCr-4:1:1: standard YCbCr color space; Cb and Cr are subsampled vertically by 1/4.
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GRAYSCALE: basically, a single component image of just multilevels of grey.
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*/
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#define GST_RTP_J2K_RGB "RGB"
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#define GST_RTP_J2K_BGR "BGR"
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#define GST_RTP_J2K_RGBA "RGBA"
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#define GST_RTP_J2K_BGRA "BGRA"
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#define GST_RTP_J2K_YBRA "YCbCrA"
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#define GST_RTP_J2K_YBR444 "YCbCr-4:4:4"
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#define GST_RTP_J2K_YBR422 "YCbCr-4:2:2"
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#define GST_RTP_J2K_YBR420 "YCbCr-4:2:0"
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#define GST_RTP_J2K_YBR410 "YCbCr-4:1:0"
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#define GST_RTP_J2K_GRAYSCALE "GRAYSCALE"
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#define GST_RTP_J2K_SAMPLING_LIST "sampling = (string) {\"RGB\", \"BGR\", \"RGBA\", \"BGRA\", \"YCbCrA\", \"YCbCr-4:4:4\", \"YCbCr-4:2:2\", \"YCbCr-4:2:0\", \"YCbCr-4:1:1\", \"GRAYSCALE\"}"
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/*
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* GstJ2KMarker:
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* @GST_J2K_MARKER: Prefix for JPEG 2000 marker
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* @GST_J2K_MARKER_SOC: Start of code stream
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* @GST_J2K_MARKER_SOT: Start of tile
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* @GST_J2K_MARKER_EOC: End of code stream
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*
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* Identifiers for markers in JPEG 2000 code streams
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*/
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typedef enum
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{
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GST_J2K_MARKER = 0xFF,
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GST_J2K_MARKER_SOC = 0x4F,
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GST_J2K_MARKER_SIZ = 0x51,
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GST_J2K_MARKER_COD = 0x52,
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GST_J2K_MARKER_SOT = 0x90,
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GST_J2K_MARKER_SOP = 0x91,
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GST_J2K_MARKER_EPH = 0x92,
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GST_J2K_MARKER_SOD = 0x93,
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GST_J2K_MARKER_EOC = 0xD9
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} GstJ2KMarker;
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#endif
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