From 2db7f8e82764cc4cd26d529155a70499833a0fdf Mon Sep 17 00:00:00 2001
From: chacha21 <pierre@chachatelier.fr>
Date: Thu, 1 Aug 2024 09:36:08 +0200
Subject: [PATCH] Adding getStdAllocator() to cv::cuda::GpuMat

To be on par with `cv::Mat`, let's add `cv::cuda::GpuMat::getStdAllocator()`
This is useful anyway, because when a user wants to use custom allocators, he might want to resort to the standard default allocator behaviour, not some other allocator that could have been set by `setDefaultAllocator()`
---
 modules/core/include/opencv2/core/cuda.hpp | 1 +
 modules/core/src/cuda/gpu_mat.cu           | 7 +++++++
 2 files changed, 8 insertions(+)

diff --git a/modules/core/include/opencv2/core/cuda.hpp b/modules/core/include/opencv2/core/cuda.hpp
index 9d210ed7b5..6cd6711582 100644
--- a/modules/core/include/opencv2/core/cuda.hpp
+++ b/modules/core/include/opencv2/core/cuda.hpp
@@ -118,6 +118,7 @@ public:
     //! default allocator
     CV_WRAP static GpuMat::Allocator* defaultAllocator();
     CV_WRAP static void setDefaultAllocator(GpuMat::Allocator* allocator);
+    CV_WRAP static GpuMat::Allocator* getStdAllocator();
 
     //! default constructor
     CV_WRAP explicit GpuMat(GpuMat::Allocator* allocator = GpuMat::defaultAllocator());
diff --git a/modules/core/src/cuda/gpu_mat.cu b/modules/core/src/cuda/gpu_mat.cu
index c286f28eb0..a86888cac3 100644
--- a/modules/core/src/cuda/gpu_mat.cu
+++ b/modules/core/src/cuda/gpu_mat.cu
@@ -135,6 +135,7 @@ namespace
 
     DefaultAllocator cudaDefaultAllocator;
     GpuMat::Allocator* g_defaultAllocator = &cudaDefaultAllocator;
+    GpuMat::Allocator* g_stdAllocator = &cudaDefaultAllocator;
 }
 
 GpuMat::Allocator* cv::cuda::GpuMat::defaultAllocator()
@@ -148,6 +149,12 @@ void cv::cuda::GpuMat::setDefaultAllocator(Allocator* allocator)
     g_defaultAllocator = allocator;
 }
 
+GpuMat::Allocator* cv::cuda::GpuMat::getStdAllocator()
+{
+    return g_stdAllocator;
+}
+
+
 /////////////////////////////////////////////////////
 /// create