jaby/jabyengine
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Simulated load of a file

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jaby
2023-03-03 14:33:29 +01:00
parent c7923c245c
commit 45371bc2f0
7 changed files with 106 additions and 38 deletions
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4
include/PSX/Auxiliary/circular_buffer.hpp
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@@ -17,10 +17,12 @@ namespace JabyEngine {
public:
FastCircularBuffer() = default;
void setup(T* buffer_start_adr) {
size_t setup(T* buffer_start_adr) {
this->start_adr = buffer_start_adr;
this->read_idx = 0;
this->write_idx = 0;
return (sizeof(T)*ElementCount);
}
T* allocate() {

13
include/PSX/File/Processor/cd_file_processor.hpp
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@@ -1,7 +1,9 @@
#ifndef __JABYENGINE_CD_FILE_PROCESSOR_HPP__
#define __JABYENGINE_CD_FILE_PROCESSOR_HPP__
#include "../../AutoLBA/auto_lba.hpp"
#include "../../Auxiliary/circular_buffer.hpp"
#include "../../Auxiliary/lz4_decompressor.hpp"
#include "../../System/IOPorts/cd_io.hpp"
#include "../cd_file_types.hpp"
#include "file_processor.hpp"
@@ -16,11 +18,12 @@ namespace JabyEngine {
};
private:
FileProcessor::State file_pro_state;
LZ4Decompressor lz4_decomp;
JobArray jobs;
uint8_t* work_area = nullptr;
const AutoLBAEntry* lba = nullptr;
FileProcessor::State file_pro_state;
FastCircularBuffer<CD_IO::DataSector, 8> circular_buffer;
LZ4Decompressor lz4_decomp;
JobArray jobs;
uint8_t* work_area = nullptr;
const AutoLBAEntry* lba = nullptr;
void start_cur_job();

12
include/PSX/System/IOPorts/cd_io.hpp
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@@ -4,6 +4,18 @@
namespace JabyEngine {
namespace CD_IO {
struct DataSector {
static constexpr size_t SizeBytes = 2048;
static constexpr size_t SizeWords = (SizeBytes/sizeof(uint32_t));
uint32_t data[SizeWords];
template<typename T>
static constexpr T words_to_sectors(T size) {
return (size + static_cast<T>(DataSector::SizeWords - 1))/static_cast<T>(DataSector::SizeWords);
}
};
enum Index {
Index0 = 0,
Index1 = 1,