Implement blue light filters

sysmodules/rosalina/Makefile

@@ -13,7 +13,7 @@ dir_include := include
 dir_build := build
 dir_out := ../../$(dir_build)
 
-LIBS := -lctru
+LIBS := -lctru -lm
 LIBDIRS	:= $(CTRULIB)
 LIBPATHS := $(foreach dir,$(LIBDIRS),-L$(dir)/lib)
 

sysmodules/rosalina/include/draw.h

@@ -34,6 +34,8 @@
 #define GPU_FB_TOP_LEFT_ADDR_2      REG32(0x1040046C)
 #define GPU_FB_TOP_FMT              REG32(0x10400470)
 #define GPU_FB_TOP_SEL              REG32(0x10400478)
+#define GPU_FB_TOP_COL_LUT_INDEX    REG32(0x10400480)
+#define GPU_FB_TOP_COL_LUT_ELEM     REG32(0x10400484)
 #define GPU_FB_TOP_STRIDE           REG32(0x10400490)
 #define GPU_FB_TOP_RIGHT_ADDR_1     REG32(0x10400494)
 #define GPU_FB_TOP_RIGHT_ADDR_2     REG32(0x10400498)
@@ -42,6 +44,8 @@
 #define GPU_FB_BOTTOM_ADDR_2        REG32(0x1040056C)
 #define GPU_FB_BOTTOM_FMT           REG32(0x10400570)
 #define GPU_FB_BOTTOM_SEL           REG32(0x10400578)
+#define GPU_FB_BOTTOM_COL_LUT_INDEX REG32(0x10400580)
+#define GPU_FB_BOTTOM_COL_LUT_ELEM  REG32(0x10400584)
 #define GPU_FB_BOTTOM_STRIDE        REG32(0x10400590)
 
 #define GPU_PSC0_CNT                REG32(0x1040001C)

sysmodules/rosalina/include/menus/screen_filters.h

@@ -0,0 +1,41 @@
+/*
+*   This file is part of Luma3DS
+*   Copyright (C) 2016-2017 Aurora Wright, TuxSH
+*
+*   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/>.
+*
+*   Additional Terms 7.b and 7.c of GPLv3 apply to this file:
+*       * Requiring preservation of specified reasonable legal notices or
+*         author attributions in that material or in the Appropriate Legal
+*         Notices displayed by works containing it.
+*       * Prohibiting misrepresentation of the origin of that material,
+*         or requiring that modified versions of such material be marked in
+*         reasonable ways as different from the original version.
+*/
+
+#pragma once
+
+#include "menu.h"
+
+extern Menu screenFiltersMenu;
+
+int screenFiltersCurrentTemperature;
+
+void screenFiltersSetDisabled(void);
+void screenFiltersReduceBlueLevel1(void);
+void screenFiltersReduceBlueLevel2(void);
+void screenFiltersReduceBlueLevel3(void);
+void screenFiltersReduceBlueLevel4(void);
+void screenFiltersReduceBlueLevel5(void);
+void screenFiltersSetTemperature(int temperature);

sysmodules/rosalina/include/redshift/colorramp.h

@@ -0,0 +1,32 @@
+/* colorramp.h -- color temperature calculation header
+   This file is part of Redshift.
+
+   Redshift 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.
+
+   Redshift 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 Redshift.  If not, see <http://www.gnu.org/licenses/>.
+
+   Copyright (c) 2010-2014  Jon Lund Steffensen <jonlst@gmail.com>
+*/
+
+#ifndef REDSHIFT_COLORRAMP_H
+#define REDSHIFT_COLORRAMP_H
+
+#include <stdint.h>
+
+#include "redshift.h"
+
+void colorramp_fill(uint16_t *gamma_r, uint16_t *gamma_g, uint16_t *gamma_b,
+		    int size, const color_setting_t *setting);
+void colorramp_fill_float(float *gamma_r, float *gamma_g, float *gamma_b,
+			  int size, const color_setting_t *setting);
+
+#endif /* ! REDSHIFT_COLORRAMP_H */

sysmodules/rosalina/include/redshift/redshift.h

@@ -0,0 +1,153 @@
+/* redshift.h -- Main program header
+   This file is part of Redshift.
+
+   Redshift 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.
+
+   Redshift 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 Redshift.  If not, see <http://www.gnu.org/licenses/>.
+
+   Copyright (c) 2013-2017  Jon Lund Steffensen <jonlst@gmail.com>
+*/
+
+#ifndef REDSHIFT_REDSHIFT_H
+#define REDSHIFT_REDSHIFT_H
+
+#include <stdio.h>
+#include <stdlib.h>
+
+/* The color temperature when no adjustment is applied. */
+#define NEUTRAL_TEMP  6500
+
+
+/* Location */
+typedef struct {
+	float lat;
+	float lon;
+} location_t;
+
+/* Periods of day. */
+typedef enum {
+	PERIOD_NONE = 0,
+	PERIOD_DAYTIME,
+	PERIOD_NIGHT,
+	PERIOD_TRANSITION
+} period_t;
+
+/* Color setting */
+typedef struct {
+	int temperature;
+	float gamma[3];
+	float brightness;
+} color_setting_t;
+
+/* Program modes. */
+typedef enum {
+	PROGRAM_MODE_CONTINUAL,
+	PROGRAM_MODE_ONE_SHOT,
+	PROGRAM_MODE_PRINT,
+	PROGRAM_MODE_RESET,
+	PROGRAM_MODE_MANUAL
+} program_mode_t;
+
+/* Time range.
+   Fields are offsets from midnight in seconds. */
+typedef struct {
+	int start;
+	int end;
+} time_range_t;
+
+/* Transition scheme.
+   The solar elevations at which the transition begins/ends,
+   and the association color settings. */
+typedef struct {
+	double high;
+	double low;
+	int use_time; /* When enabled, ignore elevation and use time ranges. */
+	time_range_t dawn;
+	time_range_t dusk;
+	color_setting_t day;
+	color_setting_t night;
+} transition_scheme_t;
+
+
+/* Gamma adjustment method */
+typedef struct gamma_state gamma_state_t;
+
+typedef int gamma_method_init_func(gamma_state_t **state);
+typedef int gamma_method_start_func(gamma_state_t *state);
+typedef void gamma_method_free_func(gamma_state_t *state);
+typedef void gamma_method_print_help_func(FILE *f);
+typedef int gamma_method_set_option_func(gamma_state_t *state, const char *key,
+					 const char *value);
+typedef void gamma_method_restore_func(gamma_state_t *state);
+typedef int gamma_method_set_temperature_func(
+	gamma_state_t *state, const color_setting_t *setting, int preserve);
+
+typedef struct {
+	char *name;
+
+	/* If true, this method will be tried if none is explicitly chosen. */
+	int autostart;
+
+	/* Initialize state. Options can be set between init and start. */
+	gamma_method_init_func *init;
+	/* Allocate storage and make connections that depend on options. */
+	gamma_method_start_func *start;
+	/* Free all allocated storage and close connections. */
+	gamma_method_free_func *free;
+
+	/* Print help on options for this adjustment method. */
+	gamma_method_print_help_func *print_help;
+	/* Set an option key, value-pair */
+	gamma_method_set_option_func *set_option;
+
+	/* Restore the adjustment to the state before start was called. */
+	gamma_method_restore_func *restore;
+	/* Set a specific color temperature. */
+	gamma_method_set_temperature_func *set_temperature;
+} gamma_method_t;
+
+
+/* Location provider */
+typedef struct location_state location_state_t;
+
+typedef int location_provider_init_func(location_state_t **state);
+typedef int location_provider_start_func(location_state_t *state);
+typedef void location_provider_free_func(location_state_t *state);
+typedef void location_provider_print_help_func(FILE *f);
+typedef int location_provider_set_option_func(
+	location_state_t *state, const char *key, const char *value);
+typedef int location_provider_get_fd_func(location_state_t *state);
+typedef int location_provider_handle_func(
+	location_state_t *state, location_t *location, int *available);
+
+typedef struct {
+	char *name;
+
+	/* Initialize state. Options can be set between init and start. */
+	location_provider_init_func *init;
+	/* Allocate storage and make connections that depend on options. */
+	location_provider_start_func *start;
+	/* Free all allocated storage and close connections. */
+	location_provider_free_func *free;
+
+	/* Print help on options for this location provider. */
+	location_provider_print_help_func *print_help;
+	/* Set an option key, value-pair. */
+	location_provider_set_option_func *set_option;
+
+	/* Listen and handle location updates. */
+	location_provider_get_fd_func *get_fd;
+	location_provider_handle_func *handle;
+} location_provider_t;
+
+
+#endif /* ! REDSHIFT_REDSHIFT_H */

sysmodules/rosalina/include/shell_open.h

@@ -0,0 +1,30 @@
+/*
+*   This file is part of Luma3DS
+*   Copyright (C) 2016-2017 Aurora Wright, TuxSH, panicbit
+*
+*   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/>.
+*
+*   Additional Terms 7.b and 7.c of GPLv3 apply to this file:
+*       * Requiring preservation of specified reasonable legal notices or
+*         author attributions in that material or in the Appropriate Legal
+*         Notices displayed by works containing it.
+*       * Prohibiting misrepresentation of the origin of that material,
+*         or requiring that modified versions of such material be marked in
+*         reasonable ways as different from the original version.
+*/
+
+#include <MyThread.h>
+
+MyThread *shellOpenCreateThread(void);
+void shellOpenThreadMain(void);

sysmodules/rosalina/rosalina.rsf

@@ -52,6 +52,8 @@ AccessControlInfo:
     KernelSetState: 124
 
   InterruptNumbers:
+    - 0x60 # Shell opened
+
   ServiceAccessControl:
     - fs:USER # Not strictly needed as rosalina has access to everything, it's rather to avoid a makerom warning
   FileSystemAccess:

sysmodules/rosalina/source/main.c

@@ -35,6 +35,8 @@
 #include "MyThread.h"
 #include "menus/process_patches.h"
 #include "menus/miscellaneous.h"
+#include "menus/screen_filters.h"
+#include "shell_open.h"
 
 // this is called before main
 bool isN3DS;
@@ -99,14 +101,15 @@ int main(void)
     Result res = 0;
     Handle notificationHandle;
 
-    MyThread *menuThread = menuCreateThread(), *errDispThread = errDispCreateThread(), *hbldrThread = hbldrCreateThread();
-
     if(R_FAILED(srvEnableNotification(&notificationHandle)))
         svcBreak(USERBREAK_ASSERT);
 
     if(R_FAILED(svcCreateEvent(&terminationRequestEvent, RESET_STICKY)))
         svcBreak(USERBREAK_ASSERT);
 
+    MyThread *menuThread = menuCreateThread(), *errDispThread = errDispCreateThread(), *hbldrThread = hbldrCreateThread();
+    MyThread *shellOpenThread = shellOpenCreateThread();
+
     do
     {
         res = svcWaitSynchronization(notificationHandle, -1LL);
@@ -131,6 +134,7 @@ int main(void)
     MyThread_Join(menuThread, -1LL);
     MyThread_Join(errDispThread, -1LL);
     MyThread_Join(hbldrThread, -1LL);
+    MyThread_Join(shellOpenThread, -1LL);
 
     svcCloseHandle(notificationHandle);
     return 0;

sysmodules/rosalina/source/menu.c

@@ -124,12 +124,12 @@ u32 waitCombo(void)
 }
 
 static MyThread menuThread;
-static u8 ALIGN(8) menuThreadStack[THREAD_STACK_SIZE];
+static u8 ALIGN(8) menuThreadStack[0x3000];
 static u8 batteryLevel = 255;
 
 MyThread *menuCreateThread(void)
 {
-    if(R_FAILED(MyThread_Create(&menuThread, menuThreadMain, menuThreadStack, THREAD_STACK_SIZE, 52, CORE_SYSTEM)))
+    if(R_FAILED(MyThread_Create(&menuThread, menuThreadMain, menuThreadStack, 0x3000, 52, CORE_SYSTEM)))
         svcBreak(USERBREAK_PANIC);
     return &menuThread;
 }

sysmodules/rosalina/source/menus.c

@@ -35,19 +35,21 @@
 #include "menus/debugger.h"
 #include "menus/miscellaneous.h"
 #include "menus/sysconfig.h"
+#include "menus/screen_filters.h"
 #include "ifile.h"
 #include "memory.h"
 #include "fmt.h"
 
 Menu rosalinaMenu = {
     "Rosalina menu",
-    .nbItems = 9,
+    .nbItems = 10,
     {
         { "Process list", METHOD, .method = &RosalinaMenu_ProcessList },
         { "Take screenshot (slow!)", METHOD, .method = &RosalinaMenu_TakeScreenshot },
         { "New 3DS menu...", MENU, .menu = &N3DSMenu },
         { "Debugger options...", MENU, .menu = &debuggerMenu },
         { "System configuration...", MENU, .menu = &sysconfigMenu },
+        { "Screen filters...", MENU, .menu = &screenFiltersMenu },
         { "Miscellaneous options...", MENU, .menu = &miscellaneousMenu },
         { "Power off", METHOD, .method = &RosalinaMenu_PowerOff },
         { "Reboot", METHOD, .method = &RosalinaMenu_Reboot },