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Coding away...

ITotalJustice

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Coding away...
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@ITotalJustice
ITotalJustice / sdl2_pixel_format_to_gl.c
Created December 4, 2022 08:23
struct GlFormat
{
GLint sized_format; // eg, RGBA8
GLenum format; // eg, RGBA
GLenum packing; // eg, GL_UNSIGNED_INT_8_8_8_8_REV or GL_UNSIGNED_SHORT_1_5_5_5_REV
};
struct Format
{
SDL_PixelFormatEnum sdl;
@ITotalJustice
ITotalJustice / wav_writer.hpp
Last active November 29, 2022 20:54
simple wav writer to a buffer
#pragma once
#include <cstdint>
#include <cstring>
#include <vector>
template<typename T>
struct WavWriter
{
void init()
@ITotalJustice
ITotalJustice / wav_writer.c
Last active November 29, 2022 11:12
simple wav writer in c99, useful for dumping audio output of an emulator
#include <stdbool.h>
#include <stddef.h>
#include <stdint.h>
#include <stdio.h>
#include <string.h>
static FILE* file;
static size_t number_of_samples;
static uint32_t sample_rate;
static uint8_t channels;
@ITotalJustice
ITotalJustice / envelope.c
Created November 28, 2022 12:41
nes square
#include "apu.h"
uint8_t envelope_get_volume(const struct Nes_ApuEnvelope* envelope)
{
return envelope->constant_volume_flag ? envelope->volume : envelope->counter;
}
void envelope_reload(struct Nes_ApuEnvelope* envelope)
{
envelope->start_flag = true;
@ITotalJustice
ITotalJustice / console.c
Created October 29, 2022 08:19
this is what killed my ezflash. !!DO NOT RUN THIS CODE ON YOUR EZFLASH!!!
#include <gba_console.h>
#include <gba_video.h>
#include <gba_interrupt.h>
#include <gba_systemcalls.h>
#include <gba.h>
#include <stdio.h>
enum NorS71InfoOffset
@ITotalJustice
ITotalJustice / scheduler.cpp
Last active October 23, 2022 17:01
simple-ish, fast-ish, generic-ish scheduler implementation
#include "scheduler.hpp"
#include <algorithm>
namespace scheduler {
namespace {
// s32 overflows at 0x7FFFFFFF, just over 100 million gap
constexpr s32 TIMEOUT_VALUE = 0x70000000;
void reset_event(void* user, [[maybe_unused]] s32 _)
@ITotalJustice
ITotalJustice / mgba_log.h
Last active February 8, 2023 02:00
#ifndef MGBA_LOG_H
#define MGBA_LOG_H
#include <stdio.h> /* needed for snprintf */
#define MGBA_LOG_ON 0xC0DE
#define MGBA_LOG_OFF 0x0000
#define MGBA_LOG_ON_RESULT 0x1DEA
#define MGBA_LOG_STDOUT ((char*)0x4FFF600)
@ITotalJustice
ITotalJustice / CMakeLists.txt
Last active July 11, 2022 02:33
cmake_minimum_required(VERSION 3.11.0)
project(minibug LANGUAGES C CXX)
add_executable(minibug main.cpp)
include(FetchContent)
Set(FETCHCONTENT_QUIET FALSE)
FetchContent_Declare(minizip
@ITotalJustice
ITotalJustice / strstr_s.cpp
Created March 16, 2022 21:04
find string when string is not null terminated.
// goto will be constexpr in c++23 (finally)
// for my c version: https://github.com/ITotalJustice/TotalGBA/blob/3172ffea3b3c11d0714c6425c74e89efdc219ae1/src/util/string.c#L6
auto strstr_s(std::string_view haystack, std::string_view needle) -> std::string_view
{
for (std::size_t i = 0; i < haystack.size(); i++)
{
// if we find the first matching char, start the inner loop
if (haystack[i] == needle[0])
{
@ITotalJustice
ITotalJustice / n64.cmake
Created February 16, 2022 14:15
set(LIBDRAGON "/opt/libdragon")
set(LIBDRAGON_LIBS "-ldragon -lc -lm -ldragonsys") # order matters
SET(CMAKE_SYSTEM_NAME Generic)
SET(CMAKE_SYSTEM_VERSION 1)
SET(CMAKE_SYSTEM_PROCESSOR mips)
SET(CMAKE_C_COMPILER ${LIBDRAGON}/bin/mips64-elf-gcc)
SET(CMAKE_CXX_COMPILER ${LIBDRAGON}/bin/mips64-elf-g++)
set(CMAKE_LINKER ${LIBDRAGON}/bin/mips64-elf-ld)
set(CMAKE_AR ${LIBDRAGON}/bin/mips64-elf-ar)