metal: initial support

third_party/metal-cpp/Metal/MTLIOCompressor.hpp

@@ -0,0 +1,94 @@
+//-------------------------------------------------------------------------------------------------------------------------------------------------------------
+//
+// Metal/MTLIOCompressor.hpp
+//
+// Copyright 2020-2023 Apple Inc.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+//
+//-------------------------------------------------------------------------------------------------------------------------------------------------------------
+
+#pragma once
+
+#include "MTLDefines.hpp"
+#include "MTLHeaderBridge.hpp"
+#include "MTLPrivate.hpp"
+#include "MTLDevice.hpp"
+
+#include <Foundation/Foundation.hpp>
+
+namespace MTL
+{
+using IOCompresionContext=void*;
+
+_MTL_ENUM(NS::Integer, IOCompressionStatus) {
+    IOCompressionStatusComplete = 0,
+    IOCompressionStatusError = 1,
+};
+
+size_t IOCompressionContextDefaultChunkSize();
+
+IOCompresionContext IOCreateCompressionContext(const char* path, IOCompressionMethod type, size_t chunkSize);
+
+void IOCompressionContextAppendData(IOCompresionContext context, const void* data, size_t size);
+
+IOCompressionStatus IOFlushAndDestroyCompressionContext(IOCompresionContext context);
+
+}
+
+#if defined(MTL_PRIVATE_IMPLEMENTATION)
+
+namespace MTL::Private {
+
+MTL_DEF_FUNC(MTLIOCompressionContextDefaultChunkSize, size_t (*)(void));
+
+MTL_DEF_FUNC( MTLIOCreateCompressionContext, void* (*)(const char*, MTL::IOCompressionMethod, size_t) );
+
+MTL_DEF_FUNC( MTLIOCompressionContextAppendData, void (*)(void*, const void*, size_t) );
+
+MTL_DEF_FUNC( MTLIOFlushAndDestroyCompressionContext, MTL::IOCompressionStatus (*)(void*) );
+
+}
+
+_NS_EXPORT size_t MTL::IOCompressionContextDefaultChunkSize()
+{
+    return MTL::Private::MTLIOCompressionContextDefaultChunkSize();
+}
+
+_NS_EXPORT void* MTL::IOCreateCompressionContext(const char* path, IOCompressionMethod type, size_t chunkSize)
+{
+    if ( MTL::Private::MTLIOCreateCompressionContext )
+    {
+        return MTL::Private::MTLIOCreateCompressionContext( path, type, chunkSize );
+    }
+    return nullptr;
+}
+
+_NS_EXPORT void MTL::IOCompressionContextAppendData(void* context, const void* data, size_t size)
+{
+    if ( MTL::Private::MTLIOCompressionContextAppendData )
+    {
+        MTL::Private::MTLIOCompressionContextAppendData( context, data, size );
+    }
+}
+
+_NS_EXPORT MTL::IOCompressionStatus MTL::IOFlushAndDestroyCompressionContext(void* context)
+{
+    if ( MTL::Private::MTLIOFlushAndDestroyCompressionContext )
+    {
+        return MTL::Private::MTLIOFlushAndDestroyCompressionContext( context );
+    }
+    return MTL::IOCompressionStatusError;
+}
+
+#endif