libcamera: Fix build with gcc-13

Signed-off-by: Khem Raj <raj.khem@gmail.com>

2 files changed, 47 insertions, 0 deletions

diff --git a/meta-multimedia/recipes-multimedia/libcamera/libcamera/0001-file_sink.cpp-Avoid-dangling-reference.patch b/meta-multimedia/recipes-multimedia/libcamera/libcamera/0001-file_sink.cpp-Avoid-dangling-reference.patch
new file mode 100644
index 0000000000..5aa6ee8d3c
--- /dev/null
+++ b/meta-multimedia/recipes-multimedia/libcamera/libcamera/0001-file_sink.cpp-Avoid-dangling-reference.patch
@@ -0,0 +1,46 @@
+From 0e97896e6a09957f27125957d00b5150ec90b2e9 Mon Sep 17 00:00:00 2001
+From: Khem Raj <raj.khem@gmail.com>
+Date: Tue, 24 Jan 2023 01:18:25 -0800
+Subject: [PATCH] file_sink.cpp: Avoid dangling-reference
+
+Fixes following errors with gcc-13
+
+../git/src/cam/file_sink.cpp:92:45: error: possibly dangling reference to a temporary [-Werror=dangling-reference]
+   92 |                 const FrameMetadata::Plane &meta = buffer->metadata().planes()[i];
+      |                                             ^~~~
+../git/src/cam/file_sink.cpp:92:81: note: the temporary was destroyed at the end of the full expression '(& buffer->libcamera::FrameBuffer::metadata())->libcamera::FrameMetadata::planes().libcamera::Span<const libcamera::FrameMetadata::Plane>::operator[](i)'
+   92 |                 const FrameMetadata::Plane &meta = buffer->metadata().planes()[i];
+      |                                                                                 ^
+cc1plus: all warnings being treated as errors
+
+Upstream-Status: Submitted [https://lists.libcamera.org/pipermail/libcamera-devel/2023-January/036575.html]
+Signed-off-by: Khem Raj <raj.khem@gmail.com>
+---
+ src/cam/file_sink.cpp | 8 ++++----
+ 1 file changed, 4 insertions(+), 4 deletions(-)
+
+diff --git a/src/cam/file_sink.cpp b/src/cam/file_sink.cpp
+index 45213d4a..897c4b37 100644
+--- a/src/cam/file_sink.cpp
++++ b/src/cam/file_sink.cpp
+@@ -89,13 +89,13 @@ void FileSink::writeBuffer(const Stream *stream, FrameBuffer *buffer)
+        Image *image = mappedBuffers_[buffer].get();
+ 
+        for (unsigned int i = 0; i < buffer->planes().size(); ++i) {
+-               const FrameMetadata::Plane &meta = buffer->metadata().planes()[i];
++               unsigned int bytesused = buffer->metadata().planes()[i].bytesused;
+ 
+                Span<uint8_t> data = image->data(i);
+-               unsigned int length = std::min<unsigned int>(meta.bytesused, data.size());
++               unsigned int length = std::min<unsigned int>(bytesused, data.size());
+ 
+-               if (meta.bytesused > data.size())
+-                       std::cerr << "payload size " << meta.bytesused
++               if (bytesused > data.size())
++                       std::cerr << "payload size " << bytesused
+                                  << " larger than plane size " << data.size()
+                                  << std::endl;
+ 
+-- 
+2.39.1
+
diff --git a/meta-multimedia/recipes-multimedia/libcamera/libcamera_0.0.1.bb b/meta-multimedia/recipes-multimedia/libcamera/libcamera_0.0.1.bb
index 483fe1507e..46f058f2ea 100644
--- a/meta-multimedia/recipes-multimedia/libcamera/libcamera_0.0.1.bb
+++ b/meta-multimedia/recipes-multimedia/libcamera/libcamera_0.0.1.bb
@@ -10,6 +10,7 @@ LIC_FILES_CHKSUM = "\
 
 SRC_URI = " \
         git://git.libcamera.org/libcamera/libcamera.git;protocol=https;branch=master \
+        file://0001-file_sink.cpp-Avoid-dangling-reference.patch \
 "
 
 SRCREV = "a83aed77df1258e469c0eb42d9cb4f1938db53f2"