[video_core] Simplify DMA options (#525)

This simplifies DMA options in a clearer and more objective way.

Co-authored-by: PavelBARABANOV <pavelbarabanov94@gmail.com>
Reviewed-on: https://git.eden-emu.dev/eden-emu/eden/pulls/525
Reviewed-by: crueter <crueter@eden-emu.dev>
Reviewed-by: Shinmegumi <shinmegumi@eden-emu.dev>
Co-authored-by: MaranBr <maranbr@outlook.com>
Co-committed-by: MaranBr <maranbr@outlook.com>

src/common/settings.cpp

@@ -154,11 +154,19 @@ bool IsGPULevelHigh() {
            values.current_gpu_accuracy == GpuAccuracy::High;
 }
 
+bool IsDMALevelDefault() {
+    return values.dma_accuracy.GetValue() == DmaAccuracy::Default;
+}
+
+bool IsDMALevelSafe() {
+    return values.dma_accuracy.GetValue() == DmaAccuracy::Safe;
+}
+
 bool IsFastmemEnabled() {
     if (values.cpu_debug_mode) {
         return static_cast<bool>(values.cpuopt_fastmem);
     }
-    if (Settings::values.cpu_accuracy.GetValue() == Settings::CpuAccuracy::Unsafe) {
+    if (values.cpu_accuracy.GetValue() == CpuAccuracy::Unsafe) {
         return static_cast<bool>(values.cpuopt_unsafe_host_mmu);
     }
 #if defined(__FreeBSD__) || defined(__OpenBSD__) || defined(__sun__)

src/common/settings.h

@@ -443,7 +443,7 @@ struct Values {
     SwitchableSetting<DmaAccuracy, true> dma_accuracy{linkage,
                                                       DmaAccuracy::Default,
                                                       DmaAccuracy::Default,
-                                                      DmaAccuracy::Extreme,
+                                                      DmaAccuracy::Safe,
                                                       "dma_accuracy",
                                                       Category::RendererAdvanced,
                                                       Specialization::Default,
@@ -783,6 +783,9 @@ void UpdateGPUAccuracy();
 bool IsGPULevelExtreme();
 bool IsGPULevelHigh();
 
+bool IsDMALevelDefault();
+bool IsDMALevelSafe();
+
 bool IsFastmemEnabled();
 void SetNceEnabled(bool is_64bit);
 bool IsNceEnabled();

src/common/settings_enums.h

@@ -136,7 +136,7 @@ ENUM(ShaderBackend, Glsl, Glasm, SpirV);
 
 ENUM(GpuAccuracy, Normal, High, Extreme);
 
-ENUM(DmaAccuracy, Default, Normal, High, Extreme);
+ENUM(DmaAccuracy, Default, Unsafe, Safe);
 
 ENUM(CpuBackend, Dynarmic, Nce);