From 2e1d17125193f359f4af14011611198440734ad5 Mon Sep 17 00:00:00 2001
From: bxwtf <bradonx731@gmail.com>
Date: Sat, 18 Dec 2021 17:36:08 +0000
Subject: [PATCH] initial commit

---
 .gitignore         |  3 +++
 ampler.c           | 23 +++++++++++++++++
 compile-ampler.bat | 64 ++++++++++++++++++++++++++++++++++++++++++++++
 compile-core.bat   |  1 +
 core.c             | 61 +++++++++++++++++++++++++++++++++++++++++++
 5 files changed, 152 insertions(+)
 create mode 100644 .gitignore
 create mode 100644 ampler.c
 create mode 100644 compile-ampler.bat
 create mode 100644 compile-core.bat
 create mode 100644 core.c

diff --git a/.gitignore b/.gitignore
new file mode 100644
index 0000000..fc303d4
--- /dev/null
+++ b/.gitignore
@@ -0,0 +1,3 @@
+
+*.exe
+*.dll
diff --git a/ampler.c b/ampler.c
new file mode 100644
index 0000000..8d73361
--- /dev/null
+++ b/ampler.c
@@ -0,0 +1,23 @@
+// ampler.c
+
+#include <stdio.h>
+#include <stdlib.h>
+
+#include <SDL2/SDL.h>
+
+int ampler_main(SDL_Window *w, SDL_Renderer *r, void **u_data) {
+	SDL_Event e;
+	while (1) {
+		while(SDL_PollEvent(&e))
+			if (e.type == SDL_QUIT)
+				return 1;
+		SDL_RenderPresent(r);
+		SDL_Delay(1);
+
+		if (!remove("reload-trigger")) {
+			puts("removed reload-trigger, reloading...");
+			return 0;
+		}
+	}
+}
+
diff --git a/compile-ampler.bat b/compile-ampler.bat
new file mode 100644
index 0000000..ad5b18c
--- /dev/null
+++ b/compile-ampler.bat
@@ -0,0 +1,64 @@
+@echo off
+
+:: https://stackoverflow.com/questions/32895172/how-to-detect-change-in-txt-file-using-batch
+:: https://stackoverflow.com/questions/6359820/how-to-set-commands-output-as-a-variable-in-a-batch-file
+
+setlocal enableDelayedExpansion
+
+set compmsg=compiling...
+
+del reload-trigger
+
+:do_compile
+set "stime=%time: =0%"
+set "stime=%stime:~0,-3%"
+set "stime=%stime::=%"
+set "sdate=%date:~6,4%%date:~3,2%%date:~0,2%"
+
+cls
+echo %compmsg%
+echo.
+:: taskkill /F /IM main.exe
+:: taskkill /F /IM Microsoft.Photos.exe
+:: taskkill /F /IM Video.UI.exe
+echo.
+echo compiling main.c
+echo.
+echo %time%
+
+:: cl main.c /O2 /MP /nologo /I include /link lib/avcodec.lib lib/avformat.lib lib/swscale.lib lib/avutil.lib lib/SDL2.lib lib/swresample.lib
+tcc\tcc ampler.c -o ampler.dll -shared -lsdl2 -lws2_32 -g -rdynamic
+
+echo %time%
+if %ERRORLEVEL% GEQ 1 goto compiler_error
+:: del *.obj
+:: del *.exp
+:: del *.lib
+del ampler.def
+echo.
+echo creating reload-trigger
+echo.
+echo > reload-trigger
+echo.
+
+:compiler_error
+
+:do_compare_times
+for %%f in (*.c *.h) do (
+	set compmsg=%%f compiling...
+
+	for /f "tokens=*" %%g in ('forfiles /m %%f /c "cmd /c echo @ftime"') do (set ftime=%%g)
+
+	set "ftime=!ftime::=!"
+
+	for /f "tokens=*" %%g in ('forfiles /m %%f /c "cmd /c echo @fdate"') do (set fdate=%%g)
+
+	set "fdate=!fdate:~6,4!!fdate:~3,2!!fdate:~0,2!"
+
+	if /i !ftime! gtr !stime! if /i !fdate! geq !sdate! (goto do_compile)
+)
+
+REM timeout /t 1 > nul
+
+goto do_compare_times
+
diff --git a/compile-core.bat b/compile-core.bat
new file mode 100644
index 0000000..9734e75
--- /dev/null
+++ b/compile-core.bat
@@ -0,0 +1 @@
+tcc\tcc.exe core.c -o core.exe -lsdl2 -lws2_32 -g || cmd
diff --git a/core.c b/core.c
new file mode 100644
index 0000000..3229bc8
--- /dev/null
+++ b/core.c
@@ -0,0 +1,61 @@
+// core.c
+
+#include <stdio.h>
+#include <stdlib.h>
+
+#define SDL_MAIN_HANDLED
+#include <SDL2/SDL.h>
+
+#define SHARED_OBJECT "ampler.dll"
+#define SHARED_MAIN "ampler_main"
+
+
+#define SHARED_OBJECT_ACTIVE SHARED_OBJECT "-active.dll"
+
+int main(int argc, char **argv) {
+	puts("start.");
+	SDL_Init(SDL_INIT_EVERYTHING);
+
+	SDL_Window *w;
+	SDL_Renderer *r;
+
+	w = SDL_CreateWindow("core",
+		SDL_WINDOWPOS_CENTERED, SDL_WINDOWPOS_CENTERED,
+		480, 480, SDL_WINDOW_RESIZABLE);
+	r = SDL_CreateRenderer(w, -1,
+		SDL_RENDERER_ACCELERATED | SDL_RENDERER_TARGETTEXTURE);
+
+	//SDL_CreateWindowAndRenderer(
+	//	1080, 480, SDL_WINDOW_RESIZABLE, &w, &r);
+
+	void *u_data = NULL;
+	while (1) {
+		if (system("copy " SHARED_OBJECT " " SHARED_OBJECT_ACTIVE " /Y")) {
+			puts("failed copying to " SHARED_OBJECT_ACTIVE);
+			// puts(SDL_GetError());
+			break;
+		}
+
+		void *so = SDL_LoadObject(SHARED_OBJECT_ACTIVE);
+		if (so == 0) {
+			puts("failed load " SHARED_OBJECT_ACTIVE);
+			puts(SDL_GetError());
+			break;
+		}
+
+		int(*shared_main)(SDL_Window *, SDL_Renderer *, void **)
+			= SDL_LoadFunction(so, SHARED_MAIN);
+
+		if(shared_main(w, r, &u_data))
+			break;
+
+		SDL_UnloadObject(so);
+	}
+
+	quit:
+	SDL_DestroyRenderer(r);
+	SDL_DestroyWindow(w);
+	SDL_Quit();
+	return 0;
+}
+