src/utils/drm_format_helper.cpp

0001 /*
0002     KWin - the KDE window manager
0003     This file is part of the KDE project.
0004
0005     SPDX-FileCopyrightText: 2023 Xaver Hugl <xaver.hugl@gmail.com>
0006
0007     SPDX-License-Identifier: GPL-2.0-or-later
0008 */
0009 #include "drm_format_helper.h"
0010
0011 namespace KWin
0012 {
0013
0014 std::optional<FormatInfo> FormatInfo::get(uint32_t drmFormat)
0015 {
0016     switch (drmFormat) {
0017     case DRM_FORMAT_XRGB8888:
0018     case DRM_FORMAT_XBGR8888:
0019     case DRM_FORMAT_RGBX8888:
0020     case DRM_FORMAT_BGRX8888:
0021         return FormatInfo{
0022             .drmFormat = drmFormat,
0023             .bitsPerColor = 8,
0024             .alphaBits = 0,
0025             .bitsPerPixel = 32,
0026             .openglFormat = GL_RGBA8,
0027         };
0028     case DRM_FORMAT_ARGB8888:
0029     case DRM_FORMAT_ABGR8888:
0030     case DRM_FORMAT_RGBA8888:
0031     case DRM_FORMAT_BGRA8888:
0032         return FormatInfo{
0033             .drmFormat = drmFormat,
0034             .bitsPerColor = 8,
0035             .alphaBits = 8,
0036             .bitsPerPixel = 32,
0037             .openglFormat = GL_RGBA8,
0038         };
0039     case DRM_FORMAT_XRGB2101010:
0040     case DRM_FORMAT_XBGR2101010:
0041     case DRM_FORMAT_RGBX1010102:
0042     case DRM_FORMAT_BGRX1010102:
0043         return FormatInfo{
0044             .drmFormat = drmFormat,
0045             .bitsPerColor = 10,
0046             .alphaBits = 0,
0047             .bitsPerPixel = 32,
0048             .openglFormat = GL_RGB10_A2,
0049         };
0050     case DRM_FORMAT_ARGB2101010:
0051     case DRM_FORMAT_ABGR2101010:
0052     case DRM_FORMAT_RGBA1010102:
0053     case DRM_FORMAT_BGRA1010102:
0054         return FormatInfo{
0055             .drmFormat = drmFormat,
0056             .bitsPerColor = 10,
0057             .alphaBits = 2,
0058             .bitsPerPixel = 32,
0059             .openglFormat = GL_RGB10_A2,
0060         };
0061     case DRM_FORMAT_XRGB16161616F:
0062     case DRM_FORMAT_XBGR16161616F:
0063         return FormatInfo{
0064             .drmFormat = drmFormat,
0065             .bitsPerColor = 16,
0066             .alphaBits = 0,
0067             .bitsPerPixel = 64,
0068             .openglFormat = GL_RGBA16F,
0069         };
0070     case DRM_FORMAT_ARGB16161616F:
0071     case DRM_FORMAT_ABGR16161616F:
0072         return FormatInfo{
0073             .drmFormat = drmFormat,
0074             .bitsPerColor = 16,
0075             .alphaBits = 16,
0076             .bitsPerPixel = 64,
0077             .openglFormat = GL_RGBA16F,
0078         };
0079     case DRM_FORMAT_ARGB4444:
0080     case DRM_FORMAT_ABGR4444:
0081     case DRM_FORMAT_RGBA4444:
0082     case DRM_FORMAT_BGRA4444:
0083         return FormatInfo{
0084             .drmFormat = drmFormat,
0085             .bitsPerColor = 4,
0086             .alphaBits = 4,
0087             .bitsPerPixel = 16,
0088             .openglFormat = GL_RGBA4,
0089         };
0090     case DRM_FORMAT_ARGB1555:
0091     case DRM_FORMAT_ABGR1555:
0092     case DRM_FORMAT_RGBA5551:
0093     case DRM_FORMAT_BGRA5551:
0094         return FormatInfo{
0095             .drmFormat = drmFormat,
0096             .bitsPerColor = 5,
0097             .alphaBits = 1,
0098             .bitsPerPixel = 16,
0099             .openglFormat = GL_RGB5_A1,
0100         };
0101     case DRM_FORMAT_NV12:
0102         return FormatInfo{
0103             .drmFormat = drmFormat,
0104             .bitsPerColor = 8,
0105             .alphaBits = 0,
0106             .bitsPerPixel = 24,
0107             .openglFormat = GL_R8,
0108         };
0109     default:
0110         return std::nullopt;
0111     }
0112 }
0113
0114 QString FormatInfo::drmFormatName(const QString &prefix, uint32_t format)
0115 {
0116     return QString::asprintf(
0117         "%s%c%c%c%c %s-endian (0x%08x)", prefix.toUtf8().constData(),
0118         QLatin1Char(format & 0xff).toLatin1(),
0119         QLatin1Char((format >> 8) & 0xff).toLatin1(),
0120         QLatin1Char((format >> 16) & 0xff).toLatin1(),
0121         QLatin1Char((format >> 24) & 0x7f).toLatin1(),
0122         format & DRM_FORMAT_BIG_ENDIAN ? "big" : "little",
0123         format);
0124 }
0125
0126 }