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https://gitlab.freedesktop.org/gstreamer/gstreamer.git
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2d6da02653
In the process we have changed the color value range from video-range to full-range, which is probably what people want in the first place. Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/4135>
89 lines
3 KiB
C
89 lines
3 KiB
C
/*
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* Copyright (C) 2023 Nirbheek Chauhan <nirbheek@centricular.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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#include "helpers.h"
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#include <CoreVideo/CVPixelBuffer.h>
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GstVideoFormat
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gst_video_format_from_cvpixelformat (int fmt)
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{
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/* Note that video and full-range color values map to the same format */
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switch (fmt) {
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/* YUV */
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case kCVPixelFormatType_420YpCbCr8Planar:
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case kCVPixelFormatType_420YpCbCr8PlanarFullRange:
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return GST_VIDEO_FORMAT_I420;
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case kCVPixelFormatType_420YpCbCr8BiPlanarVideoRange:
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case kCVPixelFormatType_420YpCbCr8BiPlanarFullRange:
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return GST_VIDEO_FORMAT_NV12;
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case kCVPixelFormatType_422YpCbCr8:
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return GST_VIDEO_FORMAT_UYVY;
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case kCVPixelFormatType_422YpCbCr8_yuvs:
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return GST_VIDEO_FORMAT_YUY2;
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/* Alpha YUV */
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case kCVPixelFormatType_4444AYpCbCr16:
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return GST_VIDEO_FORMAT_AYUV64;
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/* RGB formats */
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case kCVPixelFormatType_32ARGB:
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return GST_VIDEO_FORMAT_ARGB;
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case kCVPixelFormatType_32BGRA:
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return GST_VIDEO_FORMAT_BGRA;
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case kCVPixelFormatType_64ARGB:
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return GST_VIDEO_FORMAT_ARGB64_BE;
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case kCVPixelFormatType_64RGBALE:
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return GST_VIDEO_FORMAT_RGBA64_LE;
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default:
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return GST_VIDEO_FORMAT_UNKNOWN;
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}
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}
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int
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gst_video_format_to_cvpixelformat (GstVideoFormat fmt)
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{
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switch (fmt) {
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/* YUV */
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case GST_VIDEO_FORMAT_I420:
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return kCVPixelFormatType_420YpCbCr8PlanarFullRange;
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case GST_VIDEO_FORMAT_NV12:
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return kCVPixelFormatType_420YpCbCr8BiPlanarFullRange;
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case GST_VIDEO_FORMAT_UYVY:
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return kCVPixelFormatType_422YpCbCr8;
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case GST_VIDEO_FORMAT_YUY2:
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return kCVPixelFormatType_422YpCbCr8_yuvs;
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/* Alpha YUV */
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case GST_VIDEO_FORMAT_AYUV64:
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/* This is fine for now because Apple only ships LE devices */
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#if G_BYTE_ORDER != G_LITTLE_ENDIAN
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#error "AYUV64 is NE but kCVPixelFormatType_4444AYpCbCr16 is LE"
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#endif
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return kCVPixelFormatType_4444AYpCbCr16;
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/* RGB formats */
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case GST_VIDEO_FORMAT_ARGB:
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return kCVPixelFormatType_32ARGB;
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case GST_VIDEO_FORMAT_BGRA:
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return kCVPixelFormatType_32BGRA;
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case GST_VIDEO_FORMAT_ARGB64_BE:
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return kCVPixelFormatType_64ARGB;
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case GST_VIDEO_FORMAT_RGBA64_LE:
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return kCVPixelFormatType_64RGBALE;
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default:
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g_assert_not_reached ();
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return -1;
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}
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}
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