From dbd925f2eae5d573cf959fb3f67a279adba2a1fd Mon Sep 17 00:00:00 2001
From: Johannes Ziemke <github@5pi.de>
Date: Thu, 20 Nov 2025 15:21:53 +0100
Subject: [PATCH] Support DRM_FORMAT_RGB565

---
 CHANGELOG.md                           | 1 +
 libsrc/grabber/drm/DRMFrameGrabber.cpp | 8 ++++++++
 2 files changed, 9 insertions(+)

diff --git a/CHANGELOG.md b/CHANGELOG.md
index 7bb3dd211..d357bb73c 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -20,6 +20,7 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 - Linux: New DRM/KMS screen grabber with plane-based capture - not feature complete yet
 - Logging/Tracing: Introduced qlogging categories to enable dynamic tracing
 - Home Assistant: Dynamically set brightness for higher dynamic range (#1922)
+- Add DRM_FORMAT_RGB565 format to DRM frame grabber
 
 ---
 
diff --git a/libsrc/grabber/drm/DRMFrameGrabber.cpp b/libsrc/grabber/drm/DRMFrameGrabber.cpp
index de981ee9d..3bbb6bf2f 100644
--- a/libsrc/grabber/drm/DRMFrameGrabber.cpp
+++ b/libsrc/grabber/drm/DRMFrameGrabber.cpp
@@ -119,6 +119,9 @@ static PixelFormat GetPixelFormatForDrmFormat(uint32_t format)
 {
     switch (format)
     {
+#ifdef DRM_FORMAT_RGB565
+    case DRM_FORMAT_RGB565: return PixelFormat::BGR16;
+#endif
     case DRM_FORMAT_XRGB8888: return PixelFormat::BGR32;
     case DRM_FORMAT_ARGB8888: return PixelFormat::BGR32;
     case DRM_FORMAT_XBGR8888: return PixelFormat::RGB32;
@@ -258,6 +261,11 @@ static bool processLinearFramebuffer(const LinearFramebufferParams& params)
         lineLength = params.w * 2; // 16bpp luma
     }
 #endif
+    else if (params.pixelFormat == PixelFormat::BGR16)
+    {
+        size = params.w * params.h * 2;
+        lineLength = params.w * 2;
+    }
     else if (params.pixelFormat == PixelFormat::RGB32 || params.pixelFormat == PixelFormat::BGR32)
     {
         size = params.w * params.h * 4;