h264: Use asynchronous decoding when possible (#1257)

Author: Exzap

src/Cafe/CMakeLists.txt

@@ -374,7 +374,9 @@ add_library(CemuCafe
   OS/libs/gx2/GX2_Texture.h
   OS/libs/gx2/GX2_TilingAperture.cpp
   OS/libs/h264_avc/H264Dec.cpp
+  OS/libs/h264_avc/H264DecBackendAVC.cpp
   OS/libs/h264_avc/h264dec.h
+  OS/libs/h264_avc/H264DecInternal.h
   OS/libs/h264_avc/parser
   OS/libs/h264_avc/parser/H264Parser.cpp
   OS/libs/h264_avc/parser/H264Parser.h

src/Cafe/OS/libs/coreinit/coreinit_SysHeap.cpp

@@ -14,13 +14,10 @@ namespace coreinit
 		return coreinit::MEMAllocFromExpHeapEx(_sysHeapHandle, size, alignment);
 	}
 
-	void export_OSAllocFromSystem(PPCInterpreter_t* hCPU)
+	void OSFreeToSystem(void* ptr)
 	{
-		ppcDefineParamU32(size, 0);
-		ppcDefineParamS32(alignment, 1);
-		MEMPTR<void> mem = OSAllocFromSystem(size, alignment);
-		cemuLog_logDebug(LogType::Force, "OSAllocFromSystem(0x{:x}, {}) -> 0x{:08x}", size, alignment, mem.GetMPTR());
-		osLib_returnFromFunction(hCPU, mem.GetMPTR());
+		_sysHeapFreeCounter++;
+		coreinit::MEMFreeToExpHeap(_sysHeapHandle, ptr);
 	}
 
 	void InitSysHeap()
@@ -34,7 +31,8 @@ namespace coreinit
 
 	void InitializeSysHeap()
 	{
-		osLib_addFunction("coreinit", "OSAllocFromSystem", export_OSAllocFromSystem);
+		cafeExportRegister("h264", OSAllocFromSystem, LogType::CoreinitMem);
+		cafeExportRegister("h264", OSFreeToSystem, LogType::CoreinitMem);
 	}
 
 }

src/Cafe/OS/libs/coreinit/coreinit_SysHeap.h

@@ -4,5 +4,8 @@ namespace coreinit
 {
 	void InitSysHeap();
 
+	void* OSAllocFromSystem(uint32 size, uint32 alignment);
+	void OSFreeToSystem(void* ptr);
+
 	void InitializeSysHeap();
 }