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// 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.
#include "flutter/lib/gpu/host_buffer.h"
#include <optional>
#include "dart_api.h"
#include "impeller/core/host_buffer.h"
#include "impeller/core/platform.h"
#include "third_party/tonic/typed_data/dart_byte_data.h"
namespace flutter {
namespace gpu {
IMPLEMENT_WRAPPERTYPEINFO(flutter_gpu, HostBuffer);
HostBuffer::HostBuffer(Context* context)
: host_buffer_(impeller::HostBuffer::Create(
context->GetContext()->GetResourceAllocator())) {}
HostBuffer::~HostBuffer() = default;
std::shared_ptr<impeller::HostBuffer> HostBuffer::GetBuffer() {
return host_buffer_;
}
size_t HostBuffer::EmplaceBytes(const tonic::DartByteData& byte_data) {
auto view =
host_buffer_->Emplace(byte_data.data(), byte_data.length_in_bytes(),
impeller::DefaultUniformAlignment());
emplacements_[current_offset_] = view;
size_t previous_offset = current_offset_;
current_offset_ += view.range.length;
return previous_offset;
}
std::optional<impeller::BufferView> HostBuffer::GetBufferViewForOffset(
size_t offset) {
return emplacements_[offset];
}
} // namespace gpu
} // namespace flutter
//----------------------------------------------------------------------------
/// Exports
///
void InternalFlutterGpu_HostBuffer_Initialize(Dart_Handle wrapper,
flutter::gpu::Context* context) {
auto res = fml::MakeRefCounted<flutter::gpu::HostBuffer>(context);
res->AssociateWithDartWrapper(wrapper);
}
size_t InternalFlutterGpu_HostBuffer_EmplaceBytes(
flutter::gpu::HostBuffer* wrapper,
Dart_Handle byte_data) {
return wrapper->EmplaceBytes(tonic::DartByteData(byte_data));
}