| // Copyright 2013 The Flutter Authors. All rights reserved. |
| // Use of this source code is governed by a BSD-style license that can be |
| // found in the LICENSE file. |
| |
| #ifndef FLUTTER_LIB_GPU_HOST_BUFFER_H_ |
| #define FLUTTER_LIB_GPU_HOST_BUFFER_H_ |
| |
| #include "flutter/lib/gpu/export.h" |
| #include "flutter/lib/ui/dart_wrapper.h" |
| #include "impeller/core/buffer_view.h" |
| #include "impeller/core/host_buffer.h" |
| #include "lib/gpu/context.h" |
| #include "third_party/tonic/typed_data/dart_byte_data.h" |
| |
| namespace flutter { |
| namespace gpu { |
| |
| class HostBuffer : public RefCountedDartWrappable<HostBuffer> { |
| DEFINE_WRAPPERTYPEINFO(); |
| FML_FRIEND_MAKE_REF_COUNTED(HostBuffer); |
| |
| public: |
| explicit HostBuffer(Context* context); |
| |
| ~HostBuffer() override; |
| |
| std::shared_ptr<impeller::HostBuffer> GetBuffer(); |
| |
| size_t EmplaceBytes(const tonic::DartByteData& byte_data); |
| |
| std::optional<impeller::BufferView> GetBufferViewForOffset(size_t offset); |
| |
| private: |
| size_t current_offset_ = 0; |
| std::shared_ptr<impeller::HostBuffer> host_buffer_; |
| std::unordered_map<size_t, impeller::BufferView> emplacements_; |
| |
| FML_DISALLOW_COPY_AND_ASSIGN(HostBuffer); |
| }; |
| |
| } // namespace gpu |
| } // namespace flutter |
| |
| //---------------------------------------------------------------------------- |
| /// Exports |
| /// |
| |
| extern "C" { |
| |
| FLUTTER_GPU_EXPORT |
| extern void InternalFlutterGpu_HostBuffer_Initialize( |
| Dart_Handle wrapper, |
| flutter::gpu::Context* context); |
| |
| FLUTTER_GPU_EXPORT |
| extern size_t InternalFlutterGpu_HostBuffer_EmplaceBytes( |
| flutter::gpu::HostBuffer* wrapper, |
| Dart_Handle byte_data); |
| |
| } // extern "C" |
| |
| #endif // FLUTTER_LIB_GPU_HOST_BUFFER_H_ |