switch: add power support

CMakeLists.txt

@@ -2008,14 +2008,12 @@ elseif(NINTENDO_SWITCH)
     set(SOURCE_FILES ${SOURCE_FILES} ${SWITCH_JOYSTICK_SOURCES})
     set(HAVE_SDL_JOYSTICK TRUE)
   endif()
-  #[[
   if(SDL_POWER)
     set(SDL_POWER_SWITCH 1)
     file(GLOB SWITCH_POWER_SOURCES ${SDL2_SOURCE_DIR}/src/power/switch/*.c)
     set(SOURCE_FILES ${SOURCE_FILES} ${SWITCH_POWER_SOURCES})
     set(HAVE_SDL_POWER TRUE)
   endif()
-  ]]
   if(SDL_TIMERS)
     set(SDL_TIMER_SWITCH 1)
     file(GLOB SWITCH_TIMER_SOURCES ${SDL2_SOURCE_DIR}/src/timer/switch/*.c)

src/power/SDL_power.c

@@ -74,6 +74,9 @@ static SDL_GetPowerInfo_Impl implementations[] = {
 #ifdef SDL_POWER_EMSCRIPTEN     /* handles Emscripten */
     SDL_GetPowerInfo_Emscripten,
 #endif
+#ifdef SDL_POWER_SWITCH         /* handles Nintendo Switch. */
+    SDL_GetPowerInfo_SWITCH,
+#endif
 
 #ifdef SDL_POWER_HARDWIRED
     SDL_GetPowerInfo_Hardwired,

src/power/SDL_syspower.h

@@ -40,6 +40,7 @@ SDL_bool SDL_GetPowerInfo_Android(SDL_PowerState *, int *, int *);
 SDL_bool SDL_GetPowerInfo_PSP(SDL_PowerState *, int *, int *);
 SDL_bool SDL_GetPowerInfo_WinRT(SDL_PowerState *, int *, int *);
 SDL_bool SDL_GetPowerInfo_Emscripten(SDL_PowerState *, int *, int *);
+SDL_bool SDL_GetPowerInfo_SWITCH(SDL_PowerState *, int *, int *);
 
 /* this one is static in SDL_power.c */
 /* SDL_bool SDL_GetPowerInfo_Hardwired(SDL_PowerState *, int *, int *);*/

src/power/switch/SDL_syspower.c

@@ -0,0 +1,66 @@
+/*
+  Simple DirectMedia Layer
+  Copyright (C) 1997-2015 Sam Lantinga <slouken@libsdl.org>
+
+  This software is provided 'as-is', without any express or implied
+  warranty.  In no event will the authors be held liable for any damages
+  arising from the use of this software.
+
+  Permission is granted to anyone to use this software for any purpose,
+  including commercial applications, and to alter it and redistribute it
+  freely, subject to the following restrictions:
+
+  1. The origin of this software must not be misrepresented; you must not
+     claim that you wrote the original software. If you use this software
+     in a product, an acknowledgment in the product documentation would be
+     appreciated but is not required.
+  2. Altered source versions must be plainly marked as such, and must not be
+     misrepresented as being the original software.
+  3. This notice may not be removed or altered from any source distribution.
+*/
+
+#include "../../SDL_internal.h"
+
+#ifndef SDL_POWER_DISABLED
+#if SDL_POWER_SWITCH
+
+#include <switch.h>
+#include "SDL_power.h"
+
+SDL_bool
+SDL_GetPowerInfo_SWITCH(SDL_PowerState * state, int *seconds,
+                            int *percent)
+{
+    PsmChargerType chargerType;
+    u32 charge;
+    double age;
+    Result rc;
+
+    rc = psmGetChargerType(&chargerType);
+    if (R_FAILED(rc)) {
+        *state = SDL_POWERSTATE_UNKNOWN;
+        *seconds = -1;
+        *percent = -1;
+        return SDL_FALSE;
+    }
+
+    psmGetBatteryChargePercentage(&charge);
+    *percent = (int) charge;
+
+    psmGetBatteryAgePercentage(&age);
+    *seconds = (int) age;
+
+    if(chargerType == PsmChargerType_EnoughPower) {
+        *state = SDL_POWERSTATE_CHARGED;
+    } else {
+        // TODO: check if device charging...
+        *state = SDL_POWERSTATE_CHARGING;
+    }
+
+    return SDL_TRUE;
+}
+
+#endif /* SDL_POWER_SWITCH */
+#endif /* SDL_POWER_DISABLED */
+
+/* vi: set ts=4 sw=4 expandtab: */