From a2bbbab3d22af7ce684931cf321d07819ccbdfd3 Mon Sep 17 00:00:00 2001
From: for13to1 <for13to1@outlook.com>
Date: Sat, 27 Jun 2026 21:47:07 +0800
Subject: [PATCH] fix: default to YUV_400 format for .raw files

- Initialize YUV video handler to YUV_400 for .raw extension files

- Guard against empty frameSize optional in checkSpecificFileExtensions
---
 YUViewLib/src/playlistitem/playlistItemRawFile.cpp | 4 ++++
 YUViewLib/src/video/yuv/PixelFormatYUVGuess.cpp    | 2 ++
 2 files changed, 6 insertions(+)

diff --git a/YUViewLib/src/playlistitem/playlistItemRawFile.cpp b/YUViewLib/src/playlistitem/playlistItemRawFile.cpp
index d3d2054fb..0ae98f5fb 100644
--- a/YUViewLib/src/playlistitem/playlistItemRawFile.cpp
+++ b/YUViewLib/src/playlistitem/playlistItemRawFile.cpp
@@ -104,6 +104,10 @@ playlistItemRawFile::playlistItemRawFile(const QString &rawFilePath,
   {
     this->video     = std::make_unique<video::yuv::videoHandlerYUV>();
     this->rawFormat = video::RawFormat::YUV;
+    if (isInExtensions(ext, RAW_BAYER_EXTENSIONS))
+    {
+      this->getYUVVideo()->setPixelFormatYUV(video::yuv::PixelFormatYUV(video::yuv::Subsampling::YUV_400, 8, video::yuv::PlaneOrder::YUV));
+    }
   }
   else if (isInExtensions(ext, RGB_EXTENSIONS) || isInExtensions(ext, RGBA_EXTENSIONS) ||
            isInExtensions(ext, CMYK_EXTENSIONS) || fmt.toLower() == "rgb")
diff --git a/YUViewLib/src/video/yuv/PixelFormatYUVGuess.cpp b/YUViewLib/src/video/yuv/PixelFormatYUVGuess.cpp
index 69a8d43ea..94300d437 100644
--- a/YUViewLib/src/video/yuv/PixelFormatYUVGuess.cpp
+++ b/YUViewLib/src/video/yuv/PixelFormatYUVGuess.cpp
@@ -243,6 +243,8 @@ checkSpecificFileExtensions(const GuessedFrameFormat &guessedFrameFormat,
   {
     const auto rawBayerFormat =
         PixelFormatYUV(Subsampling::YUV_400, guessedFrameFormat.bitDepth.value_or(8));
+    if (!guessedFrameFormat.frameSize)
+      return rawBayerFormat;
     if (doesPixelFormatMatchFileSize(
             rawBayerFormat, *guessedFrameFormat.frameSize, fileInfo.fileSize))
       return rawBayerFormat;