_platforms_2_p_s5_2_ak_memory_mgr_funcs_8h

알림: 고객님의 주요 출시 버전( 2023.1.3.8471 )에 해당하는 최신 설명서로 이동했습니다. 특정 버전의 설명서를 보시려면 Audiokinetic 런처에서 오프라인 설명서를 다운로드하고 Wwise Authoring의 Offline Documentation을 확인하세요.

Wwise SDK 2023.1.3

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 /*******************************************************************************
 The content of this file includes portions of the AUDIOKINETIC Wwise Technology
 released in source code form as part of the SDK installer package.
  
 Commercial License Usage
  
 Licensees holding valid commercial licenses to the AUDIOKINETIC Wwise Technology
 may use this file in accordance with the end user license agreement provided 
 with the software or, alternatively, in accordance with the terms contained in a
 written agreement between you and Audiokinetic Inc.
  
 Apache License Usage
  
 Alternatively, this file may be used under the Apache License, Version 2.0 (the 
 "Apache License"); you may not use this file except in compliance with the 
 Apache License. You may obtain a copy of the Apache License at 
 http://www.apache.org/licenses/LICENSE-2.0.
  
 Unless required by applicable law or agreed to in writing, software distributed
 under the Apache License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES
 OR CONDITIONS OF ANY KIND, either express or implied. See the Apache License for
 the specific language governing permissions and limitations under the License.
  
   Copyright (c) 2024 Audiokinetic Inc.
 *******************************************************************************/
  
 #pragma once
  
 #include <AK/SoundEngine/Common/AkTypes.h>
 #include <sys/dmem.h>
 #include <sceerror.h>
  
 #define AK_VM_PAGE_SIZE        (64*1024)
 #define AK_VM_HUGE_PAGE_SIZE   (2*1024*1024)
 #define AK_VM_DEVICE_PAGE_SIZE (64*1024)
  
 namespace AKPLATFORM
 {
  
     // In order to use ACM hardware accelerated functions, Wwise must have GPU-visible memory
     const int kMemoryFlags = SCE_KERNEL_PROT_CPU_RW | SCE_KERNEL_PROT_GPU_RW | SCE_KERNEL_PROT_AMPR_ALL;
     const int kDeviceMemoryFlags = SCE_KERNEL_PROT_CPU_RW | SCE_KERNEL_PROT_GPU_RW | SCE_KERNEL_PROT_AMPR_ALL | SCE_KERNEL_PROT_ACP_RW;
  
     AkForceInline void* AllocVM(size_t size, size_t* extra)
     {
         AKASSERT((size % AK_VM_PAGE_SIZE) == 0);
         off_t directMemStart = 0;
         void* ptr = NULL;
  
         int32_t err;
         // if size lines up with huge pages, set alignment up similarly
         int32_t alignment = (size % AK_VM_HUGE_PAGE_SIZE == 0) ? AK_VM_HUGE_PAGE_SIZE : AK_VM_PAGE_SIZE;
         err = sceKernelAllocateMainDirectMemory(size, alignment, SCE_KERNEL_MTYPE_C_SHARED, &directMemStart);
         if (err == SCE_OK)
         {
             // allocate with device memory flags all of the time, in case a separate device heap is not in use
             err = sceKernelMapDirectMemory(&ptr, size, AKPLATFORM::kDeviceMemoryFlags, 0, directMemStart, alignment);
             AKASSERT(ptr);
             AKASSERT(err == SCE_OK);
  
             *extra = (size_t)directMemStart;
         }
         return ptr;
     }
  
     AkForceInline void FreeVM(void* address, size_t size, size_t extra, size_t release)
     {
         if (release)
         {
             AKASSERT(extra);
             off_t directMemStart = (off_t)extra;
             int32_t err = sceKernelReleaseDirectMemory(directMemStart, release);
             AKASSERT(err == SCE_OK);
         }
     }
  
     AkForceInline void* AllocDevice(size_t size, size_t* extra)
     {
         AKASSERT((size % AK_VM_DEVICE_PAGE_SIZE) == 0);
         off_t directMemStart = 0;
         void* ptr = NULL;
  
         int32_t err;
         // if size lines up with huge pages, set alignment up similarly
         int32_t alignment = (size % AK_VM_HUGE_PAGE_SIZE == 0) ? AK_VM_HUGE_PAGE_SIZE : AK_VM_DEVICE_PAGE_SIZE;
         err = sceKernelAllocateMainDirectMemory(size, alignment, SCE_KERNEL_MTYPE_C_SHARED, &directMemStart);
         if (err == SCE_OK)
         {
             err = sceKernelMapDirectMemory(&ptr, size, AKPLATFORM::kDeviceMemoryFlags, 0, directMemStart, alignment);
             AKASSERT(ptr);
             AKASSERT(err == SCE_OK);
  
             *extra = (size_t)directMemStart;
         }
         return ptr;
     }
  
     AkForceInline void FreeDevice(void* address, size_t size, size_t extra, size_t release)
     {
         if (release)
         {
             AKASSERT(extra);
             off_t directMemStart = (off_t)extra;
             int32_t err = sceKernelReleaseDirectMemory(directMemStart, release);
             AKASSERT(err == SCE_OK);
         }
     }
  
     AkForceInline bool CheckMemoryProtection(void* address, size_t size, int expectedProt)
     {
         void* pStart, * pEnd;
         int prot;
  
         AkUIntPtr addressEnd = (AkUIntPtr)address + size - 1;
  
         // Check protection flags apply to the whole range
         while ((AkUIntPtr)address < addressEnd)
         {
             int err = sceKernelQueryMemoryProtection(address, &pStart, &pEnd, &prot);
             if (err != SCE_OK)
                 return false;
  
             // Check protection flags
             if ((prot & expectedProt) != expectedProt)
                 return false;
  
             if ((AkUIntPtr)pStart > (AkUIntPtr)address)
                 return false;
  
             address = pEnd;
         }
  
         return true;
     }
  
  
 }