Codechange: Use unique_ptr to manage blitters. (#13904)

src/blitter/32bpp_anim.hpp

@@ -71,7 +71,7 @@ public:
 class FBlitter_32bppAnim : public BlitterFactory {
 public:
 	FBlitter_32bppAnim() : BlitterFactory("32bpp-anim", "32bpp Animation Blitter (palette animation)") {}
-	Blitter *CreateInstance() override { return new Blitter_32bppAnim(); }
+	std::unique_ptr<Blitter> CreateInstance() override { return std::make_unique<Blitter_32bppAnim>(); }
 };
 
 #endif /* BLITTER_32BPP_ANIM_HPP */

src/blitter/32bpp_anim_sse2.hpp

@@ -38,7 +38,7 @@ public:
 class FBlitter_32bppSSE2_Anim : public BlitterFactory {
 public:
 	FBlitter_32bppSSE2_Anim() : BlitterFactory("32bpp-sse2-anim", "32bpp partially SSE2 Animation Blitter (palette animation)", HasCPUIDFlag(1, 3, 26)) {}
-	Blitter *CreateInstance() override { return new Blitter_32bppSSE2_Anim(); }
+	std::unique_ptr<Blitter> CreateInstance() override { return std::make_unique<Blitter_32bppSSE2_Anim>(); }
 };
 
 #endif /* WITH_SSE */

src/blitter/32bpp_anim_sse4.hpp

@@ -50,7 +50,7 @@ public:
 class FBlitter_32bppSSE4_Anim: public BlitterFactory {
 public:
 	FBlitter_32bppSSE4_Anim() : BlitterFactory("32bpp-sse4-anim", "32bpp SSE4 Blitter (palette animation)", HasCPUIDFlag(1, 2, 19)) {}
-	Blitter *CreateInstance() override { return static_cast<Blitter_32bppSSE2_Anim *>(new Blitter_32bppSSE4_Anim()); }
+	std::unique_ptr<Blitter> CreateInstance() override { return std::unique_ptr<Blitter>(static_cast<Blitter_32bppSSE2_Anim *>(new Blitter_32bppSSE4_Anim())); }
 };
 
 #endif /* WITH_SSE */

src/blitter/32bpp_optimized.hpp

@@ -37,7 +37,7 @@ protected:
 class FBlitter_32bppOptimized : public BlitterFactory {
 public:
 	FBlitter_32bppOptimized() : BlitterFactory("32bpp-optimized", "32bpp Optimized Blitter (no palette animation)") {}
-	Blitter *CreateInstance() override { return new Blitter_32bppOptimized(); }
+	std::unique_ptr<Blitter> CreateInstance() override { return std::make_unique<Blitter_32bppOptimized>(); }
 };
 
 #endif /* BLITTER_32BPP_OPTIMIZED_HPP */

src/blitter/32bpp_simple.hpp

@@ -35,7 +35,7 @@ public:
 class FBlitter_32bppSimple : public BlitterFactory {
 public:
 	FBlitter_32bppSimple() : BlitterFactory("32bpp-simple", "32bpp Simple Blitter (no palette animation)") {}
-	Blitter *CreateInstance() override { return new Blitter_32bppSimple(); }
+	std::unique_ptr<Blitter> CreateInstance() override { return std::make_unique<Blitter_32bppSimple>(); }
 };
 
 #endif /* BLITTER_32BPP_SIMPLE_HPP */

src/blitter/32bpp_sse2.hpp

@@ -98,7 +98,7 @@ public:
 class FBlitter_32bppSSE2 : public BlitterFactory {
 public:
 	FBlitter_32bppSSE2() : BlitterFactory("32bpp-sse2", "32bpp SSE2 Blitter (no palette animation)", HasCPUIDFlag(1, 3, 26)) {}
-	Blitter *CreateInstance() override { return new Blitter_32bppSSE2(); }
+	std::unique_ptr<Blitter> CreateInstance() override { return std::make_unique<Blitter_32bppSSE2>(); }
 };
 
 #endif /* WITH_SSE */

src/blitter/32bpp_sse4.hpp

@@ -39,7 +39,7 @@ public:
 class FBlitter_32bppSSE4: public BlitterFactory {
 public:
 	FBlitter_32bppSSE4() : BlitterFactory("32bpp-sse4", "32bpp SSE4 Blitter (no palette animation)", HasCPUIDFlag(1, 2, 19)) {}
-	Blitter *CreateInstance() override { return new Blitter_32bppSSE4(); }
+	std::unique_ptr<Blitter> CreateInstance() override { return std::make_unique<Blitter_32bppSSE4>(); }
 };
 
 #endif /* WITH_SSE */

src/blitter/32bpp_ssse3.hpp

@@ -39,7 +39,7 @@ public:
 class FBlitter_32bppSSSE3: public BlitterFactory {
 public:
 	FBlitter_32bppSSSE3() : BlitterFactory("32bpp-ssse3", "32bpp SSSE3 Blitter (no palette animation)", HasCPUIDFlag(1, 2, 9)) {}
-	Blitter *CreateInstance() override { return new Blitter_32bppSSSE3(); }
+	std::unique_ptr<Blitter> CreateInstance() override { return std::make_unique<Blitter_32bppSSSE3>(); }
 };
 
 #endif /* WITH_SSE */

src/blitter/40bpp_anim.hpp

@@ -54,7 +54,7 @@ protected:
 
 public:
 	FBlitter_40bppAnim() : BlitterFactory("40bpp-anim", "40bpp Animation Blitter (OpenGL)") {}
-	Blitter *CreateInstance() override { return new Blitter_40bppAnim(); }
+	std::unique_ptr<Blitter> CreateInstance() override { return std::make_unique<Blitter_40bppAnim>(); }
 };
 
 #endif /* BLITTER_40BPP_OPTIMIZED_HPP */

src/blitter/8bpp_optimized.hpp

@@ -32,7 +32,7 @@ public:
 class FBlitter_8bppOptimized : public BlitterFactory {
 public:
 	FBlitter_8bppOptimized() : BlitterFactory("8bpp-optimized", "8bpp Optimized Blitter (compression + all-ZoomLevel cache)") {}
-	Blitter *CreateInstance() override { return new Blitter_8bppOptimized(); }
+	std::unique_ptr<Blitter> CreateInstance() override { return std::make_unique<Blitter_8bppOptimized>(); }
 };
 
 #endif /* BLITTER_8BPP_OPTIMIZED_HPP */

src/blitter/8bpp_simple.hpp

@@ -26,7 +26,7 @@ public:
 class FBlitter_8bppSimple : public BlitterFactory {
 public:
 	FBlitter_8bppSimple() : BlitterFactory("8bpp-simple", "8bpp Simple Blitter (relative slow, but never wrong)") {}
-	Blitter *CreateInstance() override { return new Blitter_8bppSimple(); }
+	std::unique_ptr<Blitter> CreateInstance() override { return std::make_unique<Blitter_8bppSimple>(); }
 };
 
 #endif /* BLITTER_8BPP_SIMPLE_HPP */

src/blitter/factory.hpp

@@ -39,10 +39,10 @@ private:
 	 * Get the currently active blitter.
 	 * @return The currently active blitter.
 	 */
-	static Blitter **GetActiveBlitter()
+	static std::unique_ptr<Blitter> &GetActiveBlitter()
 	{
-		static Blitter *s_blitter = nullptr;
-		return &s_blitter;
+		static std::unique_ptr<Blitter> s_blitter = nullptr;
+		return s_blitter;
 	}
 
 protected:
@@ -98,12 +98,10 @@ public:
 		BlitterFactory *b = GetBlitterFactory(name);
 		if (b == nullptr) return nullptr;
 
-		Blitter *newb = b->CreateInstance();
-		delete *GetActiveBlitter();
-		*GetActiveBlitter() = newb;
+		GetActiveBlitter() = b->CreateInstance();
 
-		Debug(driver, 1, "Successfully {} blitter '{}'", name.empty() ? "probed" : "loaded", newb->GetName());
-		return newb;
+		Debug(driver, 1, "Successfully {} blitter '{}'", name.empty() ? "probed" : "loaded", GetCurrentBlitter()->GetName());
+		return GetCurrentBlitter();
 	}
 
 	/**
@@ -137,7 +135,7 @@ public:
 	 */
 	static Blitter *GetCurrentBlitter()
 	{
-		return *GetActiveBlitter();
+		return GetActiveBlitter().get();
 	}
 
 	/**
@@ -175,7 +173,7 @@ public:
 	/**
 	 * Create an instance of this Blitter-class.
 	 */
-	virtual Blitter *CreateInstance() = 0;
+	virtual std::unique_ptr<Blitter> CreateInstance() = 0;
 };
 
 extern std::string _ini_blitter;

src/blitter/null.hpp

@@ -38,7 +38,7 @@ public:
 class FBlitter_Null : public BlitterFactory {
 public:
 	FBlitter_Null() : BlitterFactory("null", "Null Blitter (does nothing)") {}
-	Blitter *CreateInstance() override { return new Blitter_Null(); }
+	std::unique_ptr<Blitter> CreateInstance() override { return std::make_unique<Blitter_Null>(); }
 };
 
 #endif /* BLITTER_NULL_HPP */