[Plugins] Added a POC overlay plugin

plugins/overlay/src/function_patcher.cpp

@@ -0,0 +1,91 @@
+/****************************************************************************
+ * Copyright (C) 2018 Maschell
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ ****************************************************************************/
+#include <wups.h>
+#include "main.h"
+#include <utils/logger.h>
+#include <dynamic_libs/vpad_functions.h>
+#include <dynamic_libs/os_functions.h>
+
+u8 logVSync __attribute__((section(".data"))) = 0;
+u8 gCallbackCooldown __attribute__((section(".data"))) = 0;
+
+struct buffer_store{
+    void * buffer;
+    s32 buffer_size;
+    s32 mode;
+    s32 surface_format;
+    vs32 buffering_mode;
+};
+
+struct buffer_store drc_store __attribute__((section(".data")));
+struct buffer_store tv_store __attribute__((section(".data")));
+
+
+DECL_FUNCTION(void, GX2SetTVBuffer, void *buffer, u32 buffer_size, s32 tv_render_mode, s32 format, s32 buffering_mode){
+    tv_store.buffer = buffer;
+    tv_store.buffer_size = buffer_size;
+    tv_store.mode = tv_render_mode;
+    tv_store.surface_format = format;
+    tv_store.buffering_mode = buffering_mode;
+    
+    return real_GX2SetTVBuffer(buffer,buffer_size,tv_render_mode,format,buffering_mode);
+}
+
+DECL_FUNCTION(void, GX2SetDRCBuffer, void *buffer, u32 buffer_size, s32 drc_mode, s32 surface_format, s32 buffering_mode){
+    drc_store.buffer = buffer;
+    drc_store.buffer_size = buffer_size;
+    drc_store.mode = drc_mode;
+    drc_store.surface_format = surface_format;
+    drc_store.buffering_mode = buffering_mode;
+    
+    return real_GX2SetDRCBuffer(buffer,buffer_size,drc_mode,surface_format,buffering_mode);
+}
+
+DECL_FUNCTION(int, VPADRead, int chan, VPADData *buffer, u32 buffer_size, s32 *error) {
+    int result = real_VPADRead(chan, buffer, buffer_size, error);
+    int btns = VPAD_BUTTON_Y | VPAD_BUTTON_X | VPAD_BUTTON_A | VPAD_BUTTON_B;
+    if(result > 0 && ((buffer[0].btns_h & (btns)) == btns) && gCallbackCooldown == 0 ){
+        gCallbackCooldown = 0x3C;
+        logVSync = 1;
+        DCFlushRange(&logVSync,sizeof(logVSync));
+        DCInvalidateRange(&logVSync,sizeof(logVSync));
+    }
+    if(gCallbackCooldown > 0){
+        gCallbackCooldown--;
+    }
+
+    return result;
+}
+
+DECL_FUNCTION(void, GX2WaitForVsync, void){
+    real_GX2WaitForVsync();
+    if(logVSync){
+        if(OSIsHomeButtonMenuEnabled()){
+            SplashScreen(2);
+            
+            // Restore the original buffer.
+            real_GX2SetTVBuffer(tv_store.buffer,tv_store.buffer_size,tv_store.mode,tv_store.surface_format,tv_store.buffering_mode);
+            real_GX2SetDRCBuffer(drc_store.buffer,drc_store.buffer_size,drc_store.mode,drc_store.surface_format,drc_store.buffering_mode);
+        }
+        logVSync = 0;
+    }
+}
+
+WUPS_MUST_REPLACE(GX2SetTVBuffer,    WUPS_LOADER_LIBRARY_GX2,        GX2SetTVBuffer);
+WUPS_MUST_REPLACE(GX2SetDRCBuffer,   WUPS_LOADER_LIBRARY_GX2,        GX2SetDRCBuffer);
+WUPS_MUST_REPLACE(GX2WaitForVsync,   WUPS_LOADER_LIBRARY_GX2,        GX2WaitForVsync);
+WUPS_MUST_REPLACE(VPADRead,          WUPS_LOADER_LIBRARY_VPAD,       VPADRead);

plugins/overlay/src/main.cpp

@@ -0,0 +1,116 @@
+/****************************************************************************
+ * Copyright (C) 2018 Maschell
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ ****************************************************************************/
+
+#include <string.h>
+#include <stdlib.h>
+#include <stdio.h>
+#include <malloc.h>
+#include <wups.h>
+#include <stdio.h>
+
+#include <dynamic_libs/os_functions.h>
+#include <dynamic_libs/vpad_functions.h>
+#include <dynamic_libs/fs_functions.h>
+#include <dynamic_libs/gx2_functions.h>
+#include <dynamic_libs/gx2_types.h>
+#include <dynamic_libs/socket_functions.h>
+#include <utils/logger.h>
+#include <utils/StringTools.h>
+#include "main.h"
+
+WUPS_PLUGIN_NAME("Overlay test");
+WUPS_PLUGIN_DESCRIPTION("Just an overlay test. Press A,B,X and Y and a text should appear.");
+WUPS_PLUGIN_VERSION("v0.1");
+WUPS_PLUGIN_AUTHOR("Maschell");
+WUPS_PLUGIN_LICENSE("GPL");
+
+/* Entry point */
+INITIALIZE(args){
+    WUPS_InitFS(args);
+    InitOSFunctionPointers();
+    InitSocketFunctionPointers(); //For logging
+    InitVPadFunctionPointers(); 
+    InitFSFunctionPointers(); 
+
+    InitGX2FunctionPointers();
+    
+    log_init();
+}
+
+void printTextOnScreen(int x,int y, const char * msg){
+    OSScreenPutFontEx(0, x, y, msg);
+    OSScreenPutFontEx(1, x, y, msg);
+}
+
+#define FPS 60
+u32 SplashScreen(s32 time){
+    u32 result = 0;
+
+    OSScreenInit();
+    u32 screen_buf0_size = OSScreenGetBufferSizeEx(0);
+    u32 screen_buf1_size = OSScreenGetBufferSizeEx(1);
+    u32 * screenbuffer0 = (u32*)memalign(0x100, screen_buf0_size);
+    u32 * screenbuffer1 = (u32*)memalign(0x100, screen_buf1_size);
+    if(screenbuffer0 == NULL){
+        return 0;
+    }
+    if(screenbuffer1 == NULL){
+        free(screenbuffer0);
+        return 0;
+    }
+    
+    OSScreenSetBufferEx(0, (void *)screenbuffer0);
+    OSScreenSetBufferEx(1, (void *)screenbuffer1);
+
+    OSScreenEnableEx(0, 1);
+    OSScreenEnableEx(1, 1);
+
+    // Clear screens
+    OSScreenClearBufferEx(0, 0);
+    OSScreenClearBufferEx(1, 0);
+
+    // Flip buffers
+    OSScreenFlipBuffersEx(0);
+    OSScreenFlipBuffersEx(1);
+
+    s32 tickswait = time * FPS * 16;
+
+    s32 sleepingtime = 16;
+    s32 times = tickswait/16;
+    s32 i=0;
+
+    while(i<times){
+        OSScreenClearBufferEx(0, 0);
+        OSScreenClearBufferEx(1, 0);
+        
+        printTextOnScreen(0,0,"This could be something cool.");
+        
+        printTextOnScreen(0,5,StringTools::strfmt("Testing changing text: %d",i).c_str());
+
+        // Flip buffers
+        OSScreenFlipBuffersEx(0);
+        OSScreenFlipBuffersEx(1);
+
+        i++;
+        os_usleep(sleepingtime*1000);
+    }
+    
+    free(screenbuffer0);
+    free(screenbuffer1);
+    return result;
+}
+

plugins/overlay/src/main.h

@@ -0,0 +1,37 @@
+/****************************************************************************
+ * Copyright (C) 2018 Maschell
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ ****************************************************************************/
+
+#ifndef _MAIN_H_
+#define _MAIN_H_
+
+#include <dynamic_libs/os_functions.h>
+#include <dynamic_libs/os_types.h>
+
+/* Main */
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+
+#ifdef __cplusplus
+}
+#endif
+
+
+u32 SplashScreen(s32 time);
+
+#endif