update headers

ios/include/filaflat/MaterialChunk.h

@@ -0,0 +1,70 @@
+/*
+ * Copyright (C) 2017 The Android Open Source Project
+ *
+ * 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.
+ */
+
+#ifndef TNT_FILAMAT_MATERIAL_CHUNK_H
+#define TNT_FILAMAT_MATERIAL_CHUNK_H
+
+#include <filament/MaterialChunkType.h>
+
+#include <filaflat/ChunkContainer.h>
+#include <filaflat/Unflattener.h>
+
+#include <private/filament/Variant.h>
+
+#include <tsl/robin_map.h>
+
+namespace filaflat {
+
+class MaterialChunk {
+public:
+    using Variant = filament::Variant;
+
+    explicit MaterialChunk(ChunkContainer const& container);
+    ~MaterialChunk() noexcept;
+
+    // call this once after container.parse() has been called
+    bool initialize(filamat::ChunkType materialTag);
+
+    // call this as many times as needed
+    // populates "shaderContent" with the requested shader, or returns false on failure.
+    bool getShader(ShaderContent& shaderContent, BlobDictionary const& dictionary,
+            uint8_t shaderModel, Variant variant, uint8_t stage);
+
+    // These methods are for debugging purposes only (matdbg)
+    // @{
+    static void decodeKey(uint32_t key, uint8_t* model, Variant::type_t* variant, uint8_t* stage);
+    const tsl::robin_map<uint32_t, uint32_t>& getOffsets() const { return mOffsets; }
+    // @}
+
+private:
+    ChunkContainer const& mContainer;
+    filamat::ChunkType mMaterialTag = filamat::ChunkType::Unknown;
+    Unflattener mUnflattener;
+    const uint8_t* mBase = nullptr;
+    tsl::robin_map<uint32_t, uint32_t> mOffsets;
+
+    bool getTextShader(Unflattener unflattener,
+            BlobDictionary const& dictionary, ShaderContent& shaderContent,
+            uint8_t shaderModel, Variant variant, uint8_t stage);
+
+    bool getSpirvShader(
+            BlobDictionary const& dictionary, ShaderContent& shaderContent,
+            uint8_t shaderModel, Variant variant, uint8_t stage);
+};
+
+} // namespace filamat
+
+#endif // TNT_FILAMAT_MATERIAL_CHUNK_H