Allocators for audio system file cache (#1485)

* Reinstates an allocator for FileCacheManager Replaces the allocator that was removed during redcode that is used for loading banks. Default schema for now to get things working again. * Update path functions to AZ::IO::Path Removes old PathUtil functions in favor of AZ::IO::Path apis. * Update the audio allocator classes Cleans up the audio allocator classes a bit. * Addresses PR feedback Updates some code to handle nullptr a bit better, and improve log messages. * Updates to audio CVars and address feedback Per feedback, converted more of the audio cvars to AZ_CVAR, but not all of them could be converted at this time. Moved audio allocator initialization to system component ctor/dtor to give RAII. Updated location of a PAL file. * Updates the copyright of the file added in this PR Merged copyright changes, so need to update new files.
2021-06-23 16:57:48 -05:00
parent 3d0093307f
commit 0a68f23ee0
20 changed files with 342 additions and 283 deletions
@@ -0,0 +1,67 @@
+/*
+ * Copyright (c) Contributors to the Open 3D Engine Project
+ * 
+ * SPDX-License-Identifier: Apache-2.0 OR MIT
+ *
+ */
+
+#include <AudioAllocators.h>
+#include <AudioLogger.h>
+#include <SoundCVars.h>
+
+namespace Audio::Platform
+{
+    void InitializeAudioAllocators()
+    {
+        // Create audio system memory pool
+        if (!AZ::AllocatorInstance<AudioSystemAllocator>::IsReady())
+        {
+            const size_t heapSize = Audio::CVars::s_ATLMemorySize << 10;
+
+            AudioSystemAllocator::Descriptor allocDesc;
+
+            // Generic Allocator:
+            allocDesc.m_allocationRecords = true;
+            allocDesc.m_heap.m_numFixedMemoryBlocks = 1;
+            allocDesc.m_heap.m_fixedMemoryBlocksByteSize[0] = heapSize;
+
+            allocDesc.m_heap.m_fixedMemoryBlocks[0] = AZ::AllocatorInstance<AZ::OSAllocator>::Get().Allocate(
+                allocDesc.m_heap.m_fixedMemoryBlocksByteSize[0],
+                allocDesc.m_heap.m_memoryBlockAlignment
+            );
+
+            AZ::AllocatorInstance<AudioSystemAllocator>::Create(allocDesc);
+        }
+
+        // Create the Bank allocator...
+        if (!AZ::AllocatorInstance<AudioBankAllocator>::IsReady())
+        {
+            const size_t heapSize = Audio::CVars::s_FileCacheManagerMemorySize << 10;
+
+            AudioBankAllocator::Descriptor allocDesc;
+            allocDesc.m_allocationRecords = true;
+            allocDesc.m_heap.m_numFixedMemoryBlocks = 1;
+            allocDesc.m_heap.m_fixedMemoryBlocksByteSize[0] = heapSize;
+            allocDesc.m_heap.m_fixedMemoryBlocks[0] = AZ::AllocatorInstance<AZ::OSAllocator>::Get().Allocate(
+                allocDesc.m_heap.m_fixedMemoryBlocksByteSize[0],
+                allocDesc.m_heap.m_memoryBlockAlignment
+            );
+
+            AZ::AllocatorInstance<AudioBankAllocator>::Create(allocDesc);
+        }
+    }
+
+    void ShutdownAudioAllocators()
+    {
+        if (AZ::AllocatorInstance<Audio::AudioBankAllocator>::IsReady())
+        {
+            AZ::AllocatorInstance<Audio::AudioBankAllocator>::Destroy();
+        }
+
+        if (AZ::AllocatorInstance<Audio::AudioSystemAllocator>::IsReady())
+        {
+            AZ::AllocatorInstance<Audio::AudioSystemAllocator>::Destroy();
+        }
+    }
+
+} // namespace Audio::Platform