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Mon, 19 Aug 2024 15:57:39 -0500 Received: from localhost.localdomain (10.180.168.240) by SATLEXMB03.amd.com (10.181.40.144) with Microsoft SMTP Server id 15.1.2507.39 via Frontend Transport; Mon, 19 Aug 2024 15:57:39 -0500 From: Harry Wentland To: , CC: , Harry Wentland Subject: [PATCH v5 32/44] drm/colorop: add BT2020/BT709 OETF and Inverse OETF Date: Mon, 19 Aug 2024 16:56:59 -0400 Message-ID: <20240819205714.316380-33-harry.wentland@amd.com> X-Mailer: git-send-email 2.46.0 In-Reply-To: <20240819205714.316380-1-harry.wentland@amd.com> References: <20240819205714.316380-1-harry.wentland@amd.com> MIME-Version: 1.0 Received-SPF: None (SATLEXMB05.amd.com: harry.wentland@amd.com does not designate permitted sender hosts) X-EOPAttributedMessage: 0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: BN2PEPF00004FBF:EE_|DS7PR12MB5957:EE_ X-MS-Office365-Filtering-Correlation-Id: b110eb70-def2-4ee9-633a-08dcc091908e X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0; 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CTRY:US; LANG:en; SCL:1; SRV:; IPV:CAL; SFV:NSPM; H:SATLEXMB04.amd.com; PTR:InfoDomainNonexistent; CAT:NONE; SFS:(13230040)(36860700013)(82310400026)(1800799024)(376014); DIR:OUT; SFP:1101; X-OriginatorOrg: amd.com X-MS-Exchange-CrossTenant-OriginalArrivalTime: 19 Aug 2024 20:57:40.7184 (UTC) X-MS-Exchange-CrossTenant-Network-Message-Id: b110eb70-def2-4ee9-633a-08dcc091908e X-MS-Exchange-CrossTenant-Id: 3dd8961f-e488-4e60-8e11-a82d994e183d X-MS-Exchange-CrossTenant-OriginalAttributedTenantConnectingIp: TenantId=3dd8961f-e488-4e60-8e11-a82d994e183d; Ip=[165.204.84.17]; Helo=[SATLEXMB04.amd.com] X-MS-Exchange-CrossTenant-AuthSource: BN2PEPF00004FBF.namprd04.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Anonymous X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: DS7PR12MB5957 X-BeenThere: dri-devel@lists.freedesktop.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Direct Rendering Infrastructure - Development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: dri-devel-bounces@lists.freedesktop.org Sender: "dri-devel" The BT.709 and BT.2020 OETFs are the same, the only difference being that the BT.2020 variant is defined with more precision for 10 and 12-bit per color encodings. Both are used as encoding functions for video content, and are therefore defined as OETF (opto-electronic transfer function) instead of as EOTF (electro-optical transfer function). v5: - Add kernel docs Signed-off-by: Harry Wentland --- drivers/gpu/drm/drm_colorop.c | 2 ++ include/drm/drm_colorop.h | 19 +++++++++++++++++++ 2 files changed, 21 insertions(+) diff --git a/drivers/gpu/drm/drm_colorop.c b/drivers/gpu/drm/drm_colorop.c index f9dcc522c94d..032ca65299e5 100644 --- a/drivers/gpu/drm/drm_colorop.c +++ b/drivers/gpu/drm/drm_colorop.c @@ -69,6 +69,8 @@ static const struct drm_prop_enum_list drm_colorop_type_enum_list[] = { static const char * const colorop_curve_1d_type_names[] = { [DRM_COLOROP_1D_CURVE_SRGB_EOTF] = "sRGB EOTF", [DRM_COLOROP_1D_CURVE_SRGB_INV_EOTF] = "sRGB Inverse EOTF", + [DRM_COLOROP_1D_CURVE_BT2020_INV_OETF] = "BT.2020 Inverse OETF", + [DRM_COLOROP_1D_CURVE_BT2020_OETF] = "BT.2020 OETF", [DRM_COLOROP_1D_CURVE_PQ_125_EOTF] = "PQ 125 EOTF", [DRM_COLOROP_1D_CURVE_PQ_125_INV_EOTF] = "PQ 125 Inverse EOTF", }; diff --git a/include/drm/drm_colorop.h b/include/drm/drm_colorop.h index d953d16c32f7..d8d0e4b571ca 100644 --- a/include/drm/drm_colorop.h +++ b/include/drm/drm_colorop.h @@ -54,6 +54,25 @@ enum drm_colorop_curve_1d_type { */ DRM_COLOROP_1D_CURVE_SRGB_INV_EOTF, + /** + * @DRM_COLOROP_1D_CURVE_BT2020_INV_OETF: + * + * The inverse of &DRM_COLOROP_1D_CURVE_BT2020_OETF + */ + DRM_COLOROP_1D_CURVE_BT2020_INV_OETF, + + /** + * @DRM_COLOROP_1D_CURVE_BT2020_OETF: + * + * The BT.2020/BT.709 transfer function. The BT.709 and BT.2020 + * transfer functions are the same, the only difference is that + * BT.2020 is defined with more precision for 10 and 12-bit + * encodings. + * + * + */ + DRM_COLOROP_1D_CURVE_BT2020_OETF, + /** * @DRM_COLOROP_1D_CURVE_PQ_125_EOTF: *