[rpms/opencv] opencv5: Backport support for protobuf v22 and later from opencv 4.9.0

[Benjamin A. Beasley <code@musicinmybrain.net>]

A new commit has been pushed.

Repo   : rpms/opencv
Branch : opencv5
Commit : f547902cbbfa92fa51c9b40b7b69018b20e9cbeb
Author : Benjamin A. Beasley <code@musicinmybrain.net>
Date   : 2024-01-11T10:58:50-05:00
Stats  : +213/-1 in 2 file(s)
URL    : https://src.fedoraproject.org/rpms/opencv/c/f547902cbbfa92fa51c9b40b7b69018b20e9cbeb?branch=opencv5

Log:
Backport support for protobuf v22 and later from opencv 4.9.0

---
diff --git a/opencv-4.8.1-protobuf-v22.patch b/opencv-4.8.1-protobuf-v22.patch
new file mode 100644
index 0000000..1873ada
--- /dev/null
+++ b/opencv-4.8.1-protobuf-v22.patch
@@ -0,0 +1,204 @@
+From c205e36bf9d74d35021c68afe3c692f0d3678f77 Mon Sep 17 00:00:00 2001
+From: Kumataro <Kumataro@users.noreply.github.com>
+Date: Thu, 19 Oct 2023 14:45:08 +0900
+Subject: [PATCH] Merge pull request #24372 from Kumataro:fix24369
+
+Supporting protobuf v22 and later(with abseil-cpp/C++17) #24372
+
+fix https://github.com/opencv/opencv/issues/24369
+related https://github.com/opencv/opencv/issues/23791
+
+1. This patch supports external protobuf v22 and later, it required abseil-cpp and c++17.
+    Even if the built-in protobuf is upgraded to v22 or later,
+    the dependency on abseil-cpp and the requirement for C++17 will continue.
+2. Some test for caffe required patched protobuf, so this patch disable them.
+
+This patch is tested by following libraries.
+-  Protobuf:                    /usr/local/lib/libprotobuf.so (4.24.4)
+-  abseil-cpp:                YES (20230125)
+
+See details at https://github.com/opencv/opencv/wiki/How_to_contribute#making-a-good-pull-request
+
+- [x] I agree to contribute to the project under Apache 2 License.
+- [x] To the best of my knowledge, the proposed patch is not based on a code under GPL or another license that is incompatible with OpenCV
+- [x] The PR is proposed to the proper branch
+- [x] There is a reference to the original bug report and related work
+- [x] There is accuracy test, performance test and test data in opencv_extra repository, if applicable
+      Patch to opencv_extra has the same branch name.
+- [x] The feature is well documented and sample code can be built with the project CMake
+---
+ cmake/OpenCVFindProtobuf.cmake   | 35 +++++++++++++++++++++++++++-----
+ modules/dnn/CMakeLists.txt       |  6 ++++++
+ modules/dnn/test/test_layers.cpp | 24 ++++++++++++++++++----
+ 3 files changed, 56 insertions(+), 9 deletions(-)
+
+diff --git a/cmake/OpenCVFindProtobuf.cmake b/cmake/OpenCVFindProtobuf.cmake
+index 8835347d1d..5b1e17529f 100644
+--- a/cmake/OpenCVFindProtobuf.cmake
++++ b/cmake/OpenCVFindProtobuf.cmake
+@@ -30,8 +30,14 @@ if(BUILD_PROTOBUF)
+   set(Protobuf_LIBRARIES "libprotobuf")
+   set(HAVE_PROTOBUF TRUE)
+ else()
++  # we still need this for command PROTOBUF_GENERATE_CPP.
++  set(protobuf_MODULE_COMPATIBLE ON)
++
+   unset(Protobuf_VERSION CACHE)
+-  find_package(Protobuf QUIET)
++  find_package(Protobuf QUIET CONFIG)
++  if(NOT Protobuf_FOUND)
++    find_package(Protobuf QUIET)
++  endif()
+ 
+   # Backwards compatibility
+   # Define camel case versions of input variables
+@@ -67,6 +73,20 @@ else()
+   endif()
+ endif()
+ 
++# See https://github.com/opencv/opencv/issues/24369
++# In Protocol Buffers v22.0 and later drops C++11 support and depends abseil-cpp.
++#   Details: https://protobuf.dev/news/2022-08-03/
++# And if std::text_view is in abseil-cpp requests C++17 and later.
++
++if(HAVE_PROTOBUF)
++  if(NOT (Protobuf_VERSION VERSION_LESS 22))
++    if((CMAKE_CXX_STANDARD EQUAL 98) OR (CMAKE_CXX_STANDARD LESS 17))
++      message(STATUS "CMAKE_CXX_STANDARD=${CMAKE_CXX_STANDARD} is too old to support protobuf(${Protobuf_VERSION}) and/or abseil-cpp. Use C++17 or later. Turning HAVE_PROTOBUF off")
++      set(HAVE_PROTOBUF FALSE)
++    endif()
++  endif()
++endif()
++
+ if(HAVE_PROTOBUF AND PROTOBUF_UPDATE_FILES AND NOT COMMAND PROTOBUF_GENERATE_CPP)
+   message(FATAL_ERROR "Can't configure protobuf dependency (BUILD_PROTOBUF=${BUILD_PROTOBUF} PROTOBUF_UPDATE_FILES=${PROTOBUF_UPDATE_FILES})")
+ endif()
+@@ -74,15 +94,20 @@ endif()
+ if(HAVE_PROTOBUF)
+   list(APPEND CUSTOM_STATUS protobuf)
+   if(NOT BUILD_PROTOBUF)
++    unset( __location)
+     if(TARGET "${Protobuf_LIBRARIES}")
+       get_target_property(__location "${Protobuf_LIBRARIES}" IMPORTED_LOCATION_RELEASE)
+       if(NOT __location)
+         get_target_property(__location "${Protobuf_LIBRARIES}" IMPORTED_LOCATION)
+       endif()
+-    elseif(Protobuf_LIBRARY)
+-      set(__location "${Protobuf_LIBRARY}")
+-    else()
+-      set(__location "${Protobuf_LIBRARIES}")
++    endif()
++
++    if(NOT __location)
++      if(Protobuf_LIBRARY)
++        set(__location "${Protobuf_LIBRARY}")
++      else()
++        set(__location "${Protobuf_LIBRARIES}")
++      endif()
+     endif()
+   endif()
+   list(APPEND CUSTOM_STATUS_protobuf "    Protobuf:"
+diff --git a/modules/dnn/CMakeLists.txt b/modules/dnn/CMakeLists.txt
+index 804b78ead2..9fcc460909 100644
+--- a/modules/dnn/CMakeLists.txt
++++ b/modules/dnn/CMakeLists.txt
+@@ -245,6 +245,12 @@ ocv_create_module(${libs} ${dnn_runtime_libs})
+ ocv_add_samples()
+ ocv_add_accuracy_tests(${dnn_runtime_libs})
+ 
++if(NOT BUILD_PROTOBUF)
++  if(TARGET opencv_test_dnn)
++    ocv_target_compile_definitions(opencv_test_dnn PRIVATE "OPENCV_DNN_EXTERNAL_PROTOBUF=1")
++  endif()
++endif()
++
+ set(perf_path "${CMAKE_CURRENT_LIST_DIR}/perf")
+ file(GLOB_RECURSE perf_srcs "${perf_path}/*.cpp")
+ file(GLOB_RECURSE perf_hdrs "${perf_path}/*.hpp" "${perf_path}/*.h")
+diff --git a/modules/dnn/test/test_layers.cpp b/modules/dnn/test/test_layers.cpp
+index 763d94b99c..6cb6d54b3f 100644
+--- a/modules/dnn/test/test_layers.cpp
++++ b/modules/dnn/test/test_layers.cpp
+@@ -756,11 +756,15 @@ TEST_F(Layer_RNN_Test, get_set_test)
+ 
+ TEST_P(Test_Caffe_layers, Accum)
+ {
++#ifdef OPENCV_DNN_EXTERNAL_PROTOBUF
++    throw SkipTestException("Requires patched protobuf");
++#else
+     if (backend == DNN_BACKEND_OPENCV && target != DNN_TARGET_CPU)
+         applyTestTag(CV_TEST_TAG_DNN_SKIP_OPENCL, CV_TEST_TAG_DNN_SKIP_OPENCL_FP16);
+ 
+     testLayerUsingCaffeModels("accum", false, false, 0.0, 0.0, 2);
+     testLayerUsingCaffeModels("accum_ref", false, false, 0.0, 0.0, 2);
++#endif
+ }
+ 
+ TEST_P(Test_Caffe_layers, FlowWarp)
+@@ -780,27 +784,39 @@ TEST_P(Test_Caffe_layers, ChannelNorm)
+ 
+ TEST_P(Test_Caffe_layers, DataAugmentation)
+ {
++#ifdef OPENCV_DNN_EXTERNAL_PROTOBUF
++    throw SkipTestException("Requires patched protobuf");
++#else
+     if (backend == DNN_BACKEND_OPENCV && target == DNN_TARGET_OPENCL_FP16)
+         applyTestTag(CV_TEST_TAG_DNN_SKIP_OPENCL_FP16);
+     testLayerUsingCaffeModels("data_augmentation", true, false);
+     testLayerUsingCaffeModels("data_augmentation_2x1", true, false);
+     testLayerUsingCaffeModels("data_augmentation_8x6", true, false);
++#endif
+ }
+ 
+ TEST_P(Test_Caffe_layers, Resample)
+ {
++#ifdef OPENCV_DNN_EXTERNAL_PROTOBUF
++    throw SkipTestException("Requires patched protobuf");
++#else
+     if (backend != DNN_BACKEND_OPENCV)
+         applyTestTag(CV_TEST_TAG_DNN_SKIP_IE_NN_BUILDER, CV_TEST_TAG_DNN_SKIP_IE_NGRAPH);
+     testLayerUsingCaffeModels("nearest_2inps", false, false, 0.0, 0.0, 2);
+     testLayerUsingCaffeModels("nearest", false, false);
++#endif
+ }
+ 
+ TEST_P(Test_Caffe_layers, Correlation)
+ {
++#ifdef OPENCV_DNN_EXTERNAL_PROTOBUF
++    throw SkipTestException("Requires patched protobuf");
++#else
+     if (backend == DNN_BACKEND_OPENCV && target == DNN_TARGET_OPENCL_FP16)
+         applyTestTag(CV_TEST_TAG_DNN_SKIP_IE_NGRAPH, CV_TEST_TAG_DNN_SKIP_IE_NN_BUILDER,
+                      CV_TEST_TAG_DNN_SKIP_OPENCL, CV_TEST_TAG_DNN_SKIP_OPENCL_FP16);
+     testLayerUsingCaffeModels("correlation", false, false, 0.0, 0.0, 2);
++#endif
+ }
+ 
+ TEST_P(Test_Caffe_layers, Convolution2Inputs)
+@@ -1641,12 +1657,11 @@ private:
+     int outWidth, outHeight, zoomFactor;
+ };
+ 
+-#ifndef OPENCV_DNN_EXTERNAL_PROTOBUF
+ TEST_P(Test_Caffe_layers, Interp)
+-#else
+-TEST_P(Test_Caffe_layers, DISABLED_Interp)  // requires patched protobuf (available in OpenCV source tree only)
+-#endif
+ {
++#ifdef OPENCV_DNN_EXTERNAL_PROTOBUF
++    throw SkipTestException("Requires patched protobuf");
++#else
+ #if defined(INF_ENGINE_RELEASE) && INF_ENGINE_VER_MAJOR_EQ(2021030000)
+     if (backend == DNN_BACKEND_INFERENCE_ENGINE_NGRAPH && target == DNN_TARGET_MYRIAD)
+         applyTestTag(CV_TEST_TAG_DNN_SKIP_IE_MYRIAD, CV_TEST_TAG_DNN_SKIP_IE_NGRAPH);  // exception
+@@ -1670,6 +1685,7 @@ TEST_P(Test_Caffe_layers, DISABLED_Interp)  // requires patched protobuf (availa
+ 
+     // Test an implemented layer.
+     testLayerUsingCaffeModels("layer_interp", false, false);
++#endif
+ }
+ 
+ INSTANTIATE_TEST_CASE_P(/*nothing*/, Test_Caffe_layers, dnnBackendsAndTargets());
+-- 
+2.43.0
+

diff --git a/opencv.spec b/opencv.spec
index b968fc2..f70f8f5 100644
--- a/opencv.spec
+++ b/opencv.spec
@@ -70,7 +70,7 @@ Version:        4.8.1
 %global minorver %(foo=%{version}; a=(${foo//./ }); echo ${a[1]} )
 %global padding  %(digits=00; num=%{minorver}; echo ${digits:${#num}:${#digits}} )
 %global abiver   %(echo %{majorver}%{padding}%{minorver} )
-Release:        3%{?dist}
+Release:        4%{?dist}
 Summary:        Collection of algorithms for computer vision
 # This is normal three clause BSD.
 License:        BSD-3-Clause and Apache-2.0 and ISC
@@ -97,6 +97,10 @@ Source5:        xorg.conf
 Source6:        https://github.com/WeChatCV/opencv_3rdparty/archive/%{wechat_commit}/wechat-%{wechat_gitdate}.git%{wechat_shortcommit}.tar.gz
 
 Patch0:         opencv-4.1.0-install_3rdparty_licenses.patch
+# Backport support for protobuf v22 and later from opencv 4.9.0
+# https://github.com/opencv/opencv/commit/6e4280ea81b59c6dca45bb9801b758377beead55
+# Rebased on 4.8.1
+Patch1:         opencv-4.8.1-protobuf-v22.patch
 Patch3:         opencv.python.patch
 Patch4:         numpy.distutils_removal.patch
 
@@ -386,6 +390,7 @@ shopt -u extglob
 popd &>/dev/null
 
 %patch -P 0 -p1 -b .install_3rdparty_licenses
+%patch -P 1 -p1 -b .protobuf-v22
 %patch -P 3 -p1 -b .python_install_binary
 %patch -P 4 -p1 -b .numpy.distutils_removal
 
@@ -563,6 +568,9 @@ ln -s -r %{buildroot}%{_jnidir}/opencv-%{javaver}.jar %{buildroot}%{_jnidir}/ope
 
 
 %changelog
+* Thu Jan 11 2024 Benjamin A. Beasley <code@musicinmybrain.net> - 4.8.1-4
+- Backport support for protobuf v22 and later from opencv 4.9.0
+
 * Thu Nov 16 2023 Sandro Mani <manisandro@gmail.com> - 4.8.1-3
 - Rebuild (gdal)