From 7ca85d7a21467e2bb18cc29722050a4790b8a0b2 Mon Sep 17 00:00:00 2001
From: Steve Williams <lompikvoila@gmail.com>
Date: Sat, 31 Jan 2026 15:00:57 +0400
Subject: [PATCH] render/pixel-format: add function to determine YCbCr from drm
 fourcc

---
 include/render/pixel_format.h |  5 +++
 render/pixel_format.c         | 65 +++++++++++++++++++++++++++++++++++
 2 files changed, 70 insertions(+)

diff --git a/include/render/pixel_format.h b/include/render/pixel_format.h
index e0b500c75..b5f2b2411 100644
--- a/include/render/pixel_format.h
+++ b/include/render/pixel_format.h
@@ -63,4 +63,9 @@ enum wl_shm_format convert_drm_format_to_wl_shm(uint32_t fmt);
  */
 bool pixel_format_has_alpha(uint32_t fmt);
 
+/**
+ * Return true if the DRM FourCC fmt belongs to a YCbCr colorspace family, false otherwise.
+ */
+bool pixel_format_is_ycbcr(uint32_t fmt);
+
 #endif
diff --git a/render/pixel_format.c b/render/pixel_format.c
index 5f2e8644a..80ba6b0ff 100644
--- a/render/pixel_format.c
+++ b/render/pixel_format.c
@@ -307,3 +307,68 @@ bool pixel_format_has_alpha(uint32_t fmt) {
 	}
 	return true;
 }
+
+bool pixel_format_is_ycbcr(uint32_t format) {
+	switch(format) {
+	case DRM_FORMAT_AYUV:
+	case DRM_FORMAT_NV12:
+	case DRM_FORMAT_NV15:
+	case DRM_FORMAT_NV16:
+	case DRM_FORMAT_NV20:
+	case DRM_FORMAT_NV21:
+	case DRM_FORMAT_NV24:
+	case DRM_FORMAT_NV30:
+	case DRM_FORMAT_NV42:
+	case DRM_FORMAT_NV61:
+	case DRM_FORMAT_P010:
+	case DRM_FORMAT_P012:
+	case DRM_FORMAT_P016:
+	case DRM_FORMAT_P030:
+	case DRM_FORMAT_P210:
+	case DRM_FORMAT_Q401:
+	case DRM_FORMAT_Q410:
+	case DRM_FORMAT_S010:
+	case DRM_FORMAT_S012:
+	case DRM_FORMAT_S016:
+	case DRM_FORMAT_S210:
+	case DRM_FORMAT_S212:
+	case DRM_FORMAT_S216:
+	case DRM_FORMAT_S410:
+	case DRM_FORMAT_S412:
+	case DRM_FORMAT_S416:
+	case DRM_FORMAT_UYVY:
+	case DRM_FORMAT_VUY101010:
+	case DRM_FORMAT_VUY888:
+	case DRM_FORMAT_VYUY:
+	case DRM_FORMAT_X0L0:
+	case DRM_FORMAT_X0L2:
+	case DRM_FORMAT_XVYU12_16161616:
+	case DRM_FORMAT_XVYU16161616:
+	case DRM_FORMAT_XVYU2101010:
+	case DRM_FORMAT_XYUV8888:
+	case DRM_FORMAT_Y0L0:
+	case DRM_FORMAT_Y0L2:
+	case DRM_FORMAT_Y210:
+	case DRM_FORMAT_Y212:
+	case DRM_FORMAT_Y216:
+	case DRM_FORMAT_Y410:
+	case DRM_FORMAT_Y412:
+	case DRM_FORMAT_Y416:
+	case DRM_FORMAT_YUV410:
+	case DRM_FORMAT_YUV411:
+	case DRM_FORMAT_YUV420:
+	case DRM_FORMAT_YUV420_10BIT:
+	case DRM_FORMAT_YUV420_8BIT:
+	case DRM_FORMAT_YUV422:
+	case DRM_FORMAT_YUV444:
+	case DRM_FORMAT_YUYV:
+	case DRM_FORMAT_YVU410:
+	case DRM_FORMAT_YVU411:
+	case DRM_FORMAT_YVU420:
+	case DRM_FORMAT_YVU422:
+	case DRM_FORMAT_YVU444:
+	case DRM_FORMAT_YVYU:
+		return true;
+	}
+	return false;
+}