hle: nvflinger: Move implementation for Parcel to its own header.
This commit is contained in:
parent
a454670de5
commit
d13e18a8ed
|
@ -543,6 +543,7 @@ add_library(core STATIC
|
|||
hle/service/nvflinger/consumer_listener.h
|
||||
hle/service/nvflinger/nvflinger.cpp
|
||||
hle/service/nvflinger/nvflinger.h
|
||||
hle/service/nvflinger/parcel.h
|
||||
hle/service/nvflinger/pixel_format.h
|
||||
hle/service/nvflinger/producer_listener.h
|
||||
hle/service/nvflinger/status.h
|
||||
|
|
|
@ -0,0 +1,171 @@
|
|||
// SPDX-License-Identifier: GPL-3.0-or-later
|
||||
// Copyright 2021 yuzu Emulator Project
|
||||
|
||||
#pragma once
|
||||
|
||||
#include <memory>
|
||||
#include <vector>
|
||||
|
||||
#include "common/alignment.h"
|
||||
#include "common/assert.h"
|
||||
#include "common/common_types.h"
|
||||
|
||||
namespace android {
|
||||
|
||||
class Parcel final {
|
||||
public:
|
||||
static constexpr std::size_t DefaultBufferSize = 0x40;
|
||||
|
||||
Parcel() : buffer(DefaultBufferSize) {}
|
||||
|
||||
template <typename T>
|
||||
explicit Parcel(const T& out_data) : buffer(DefaultBufferSize) {
|
||||
Write(out_data);
|
||||
}
|
||||
|
||||
explicit Parcel(std::vector<u8> in_data) : buffer(std::move(in_data)) {
|
||||
DeserializeHeader();
|
||||
[[maybe_unused]] const std::u16string token = ReadInterfaceToken();
|
||||
}
|
||||
|
||||
template <typename T>
|
||||
void Read(T& val) {
|
||||
static_assert(std::is_trivially_copyable_v<T>, "T must be trivially copyable.");
|
||||
ASSERT(read_index + sizeof(T) <= buffer.size());
|
||||
|
||||
std::memcpy(&val, buffer.data() + read_index, sizeof(T));
|
||||
read_index += sizeof(T);
|
||||
read_index = Common::AlignUp(read_index, 4);
|
||||
}
|
||||
|
||||
template <typename T>
|
||||
T Read() {
|
||||
T val;
|
||||
Read(val);
|
||||
return val;
|
||||
}
|
||||
|
||||
template <typename T>
|
||||
void ReadFlattened(T& val) {
|
||||
const auto flattened_size = Read<s64>();
|
||||
ASSERT(sizeof(T) == flattened_size);
|
||||
Read(val);
|
||||
}
|
||||
|
||||
template <typename T>
|
||||
T ReadFlattened() {
|
||||
T val;
|
||||
ReadFlattened(val);
|
||||
return val;
|
||||
}
|
||||
|
||||
template <typename T>
|
||||
T ReadUnaligned() {
|
||||
static_assert(std::is_trivially_copyable_v<T>, "T must be trivially copyable.");
|
||||
ASSERT(read_index + sizeof(T) <= buffer.size());
|
||||
|
||||
T val;
|
||||
std::memcpy(&val, buffer.data() + read_index, sizeof(T));
|
||||
read_index += sizeof(T);
|
||||
return val;
|
||||
}
|
||||
|
||||
template <typename T>
|
||||
const std::shared_ptr<T> ReadObject() {
|
||||
static_assert(std::is_trivially_copyable_v<T>, "T must be trivially copyable.");
|
||||
|
||||
const auto is_valid{Read<bool>()};
|
||||
|
||||
if (is_valid) {
|
||||
auto result = std::make_shared<T>();
|
||||
ReadFlattened(*result);
|
||||
return result;
|
||||
}
|
||||
|
||||
return {};
|
||||
}
|
||||
|
||||
std::u16string ReadInterfaceToken() {
|
||||
[[maybe_unused]] const u32 unknown = Read<u32>();
|
||||
const u32 length = Read<u32>();
|
||||
|
||||
std::u16string token{};
|
||||
|
||||
for (u32 ch = 0; ch < length + 1; ++ch) {
|
||||
token.push_back(ReadUnaligned<u16>());
|
||||
}
|
||||
|
||||
read_index = Common::AlignUp(read_index, 4);
|
||||
|
||||
return token;
|
||||
}
|
||||
|
||||
template <typename T>
|
||||
void Write(const T& val) {
|
||||
static_assert(std::is_trivially_copyable_v<T>, "T must be trivially copyable.");
|
||||
|
||||
if (buffer.size() < write_index + sizeof(T)) {
|
||||
buffer.resize(buffer.size() + sizeof(T) + DefaultBufferSize);
|
||||
}
|
||||
|
||||
std::memcpy(buffer.data() + write_index, &val, sizeof(T));
|
||||
write_index += sizeof(T);
|
||||
write_index = Common::AlignUp(write_index, 4);
|
||||
}
|
||||
|
||||
template <typename T>
|
||||
void WriteObject(const T* ptr) {
|
||||
static_assert(std::is_trivially_copyable_v<T>, "T must be trivially copyable.");
|
||||
|
||||
if (!ptr) {
|
||||
Write<u32>(0);
|
||||
return;
|
||||
}
|
||||
|
||||
Write<u32>(1);
|
||||
Write<s64>(sizeof(T));
|
||||
Write(*ptr);
|
||||
}
|
||||
|
||||
template <typename T>
|
||||
void WriteObject(const std::shared_ptr<T> ptr) {
|
||||
WriteObject(ptr.get());
|
||||
}
|
||||
|
||||
void DeserializeHeader() {
|
||||
ASSERT(buffer.size() > sizeof(Header));
|
||||
|
||||
Header header{};
|
||||
std::memcpy(&header, buffer.data(), sizeof(Header));
|
||||
|
||||
read_index = header.data_offset;
|
||||
}
|
||||
|
||||
std::vector<u8> Serialize() const {
|
||||
ASSERT(read_index == 0);
|
||||
|
||||
Header header{};
|
||||
header.data_size = static_cast<u32>(write_index - sizeof(Header));
|
||||
header.data_offset = sizeof(Header);
|
||||
header.objects_size = 4;
|
||||
header.objects_offset = static_cast<u32>(sizeof(Header) + header.data_size);
|
||||
std::memcpy(buffer.data(), &header, sizeof(Header));
|
||||
|
||||
return buffer;
|
||||
}
|
||||
|
||||
private:
|
||||
struct Header {
|
||||
u32 data_size;
|
||||
u32 data_offset;
|
||||
u32 objects_size;
|
||||
u32 objects_offset;
|
||||
};
|
||||
static_assert(sizeof(Header) == 16, "ParcelHeader has wrong size");
|
||||
|
||||
mutable std::vector<u8> buffer;
|
||||
std::size_t read_index = 0;
|
||||
std::size_t write_index = sizeof(Header);
|
||||
};
|
||||
|
||||
} // namespace android
|
Loading…
Reference in New Issue