Added a dummy sensor driver

Makefile.minimal

@@ -23,6 +23,7 @@ SOURCES = \
 	src/render/*.c \
 	src/render/software/*.c \
 	src/sensor/*.c \
+	src/sensor/dummy/*.c \
 	src/stdlib/*.c \
 	src/thread/*.c \
 	src/thread/generic/*.c \

Makefile.pandora

@@ -12,15 +12,38 @@ CFLAGS  = -O3 -march=armv7-a -mcpu=cortex-a8 -mtune=cortex-a8 -mfloat-abi=softfp
 
 TARGET  = libSDL.a
 
-SOURCES = ./src/*.c ./src/audio/*.c ./src/cpuinfo/*.c ./src/events/*.c \
+SOURCES = 
-	./src/file/*.c ./src/sensor/*.c ./src/stdlib/*.c ./src/thread/*.c ./src/timer/*.c ./src/video/*.c \
+	./src/*.c \
-	./src/joystick/*.c ./src/haptic/*.c ./src/power/*.c ./src/video/dummy/*.c ./src/audio/disk/*.c \
+	./src/atomic/*.c \
-	./src/audio/dummy/*.c ./src/loadso/dlopen/*.c ./src/audio/dsp/*.c \
+	./src/audio/*.c \
-	./src/thread/pthread/SDL_systhread.c ./src/thread/pthread/SDL_syssem.c \
+	./src/audio/disk/*.c \
-	./src/thread/pthread/SDL_sysmutex.c ./src/thread/pthread/SDL_syscond.c \
+	./src/audio/dsp/*.c \
-	./src/joystick/linux/*.c ./src/haptic/linux/*.c ./src/timer/unix/*.c \
+	./src/audio/dummy/*.c \
-	./src/atomic/*.c ./src/filesystem/unix/*.c \
+	./src/cpuinfo/*.c \
-	./src/video/pandora/SDL_pandora.o ./src/video/pandora/SDL_pandora_events.o ./src/video/x11/*.c 
+	./src/events/*.c \
+	./src/file/*.c \
+	./src/filesystem/unix/*.c \
+	./src/haptic/*.c \
+	./src/haptic/linux/*.c \
+	./src/joystick/*.c \
+	./src/joystick/linux/*.c \
+	./src/loadso/dlopen/*.c \
+	./src/power/*.c \
+	./src/sensor/*.c \
+	./src/sensor/dummy/*.c \
+	./src/stdlib/*.c \
+	./src/thread/*.c \
+	./src/thread/pthread/SDL_syscond.c \
+	./src/thread/pthread/SDL_sysmutex.c \
+	./src/thread/pthread/SDL_syssem.c \
+	./src/thread/pthread/SDL_systhread.c \
+	./src/timer/*.c \
+	./src/timer/unix/*.c \
+	./src/video/*.c \
+	./src/video/dummy/*.c \
+	./src/video/pandora/SDL_pandora.o \
+	./src/video/pandora/SDL_pandora_events.o \
+	./src/video/x11/*.c \
 	
 
 OBJECTS = $(shell echo $(SOURCES) | sed -e 's,\.c,\.o,g')

Makefile.psp

@@ -43,6 +43,7 @@ OBJS= src/SDL.o \
       src/render/software/SDL_render_sw.o \
       src/render/software/SDL_rotate.o \
       src/sensor/SDL_sensor.o \
+      src/sensor/dummy/SDL_dummysensor.o \
       src/stdlib/SDL_getenv.o \
       src/stdlib/SDL_iconv.o \
       src/stdlib/SDL_malloc.o \

Makefile.wiz

@@ -12,14 +12,33 @@ CFLAGS  = -Wall -fPIC -I./include -I$(WIZSDK)/include -DWIZ_GLES_LITE
 TARGET_STATIC  = libSDL2.a
 TARGET_SHARED  = libSDL2.so
 
-SOURCES = ./src/*.c ./src/audio/*.c ./src/cpuinfo/*.c ./src/events/*.c \
+SOURCES = \
-	./src/file/*.c ./src/sensor/*.c ./src/stdlib/*.c ./src/thread/*.c ./src/timer/*.c ./src/video/*.c \
+	./src/*.c \
-	./src/joystick/*.c ./src/haptic/*.c ./src/video/dummy/*.c ./src/audio/disk/*.c \
+	./src/audio/*.c \
-	./src/audio/dummy/*.c ./src/loadso/dlopen/*.c ./src/audio/dsp/*.c \
+	./src/audio/disk/*.c \
-	./src/thread/pthread/SDL_systhread.c ./src/thread/pthread/SDL_syssem.c \
+	./src/audio/dsp/*.c \
-	./src/thread/pthread/SDL_sysmutex.c ./src/thread/pthread/SDL_syscond.c \
+	./src/audio/dummy/*.c \
-	./src/joystick/linux/*.c ./src/haptic/linux/*.c ./src/timer/unix/*.c \
+	./src/cpuinfo/*.c \
-	./src/video/pandora/SDL_pandora.o ./src/video/pandora/SDL_pandora_events.o
+	./src/events/*.c \
+	./src/file/*.c \
+	./src/haptic/*.c \
+	./src/haptic/linux/*.c \
+	./src/joystick/*.c \
+	./src/joystick/linux/*.c \
+	./src/loadso/dlopen/*.c \
+	./src/sensor/*.c \
+	./src/sensor/dummy/*.c \
+	./src/stdlib/*.c \
+	./src/thread/*.c \
+	./src/thread/pthread/SDL_syscond.c \
+	./src/thread/pthread/SDL_sysmutex.c \
+	./src/thread/pthread/SDL_syssem.c \
+	./src/thread/pthread/SDL_systhread.c \
+	./src/timer/*.c \
+	./src/timer/unix/*.c \
+	./src/video/*.c \
+	./src/video/dummy/*.c \
+	./src/video/pandora/*.c \
 	
 
 OBJECTS = $(shell echo $(SOURCES) | sed -e 's,\.c,\.o,g')

Xcode/SDL/SDL.xcodeproj/project.pbxproj

@@ -913,6 +913,12 @@
 		F30D9C8A212BC94F0047DF2E /* SDL_sensor.c in Sources */ = {isa = PBXBuildFile; fileRef = F30D9C83212BC94F0047DF2E /* SDL_sensor.c */; };
 		F30D9C8B212BC94F0047DF2E /* SDL_sensor.c in Sources */ = {isa = PBXBuildFile; fileRef = F30D9C83212BC94F0047DF2E /* SDL_sensor.c */; };
 		F30D9C8C212BC94F0047DF2E /* SDL_sensor.c in Sources */ = {isa = PBXBuildFile; fileRef = F30D9C83212BC94F0047DF2E /* SDL_sensor.c */; };
+		F30D9C90212CABDC0047DF2E /* SDL_dummysensor.h in Headers */ = {isa = PBXBuildFile; fileRef = F30D9C8E212CABDB0047DF2E /* SDL_dummysensor.h */; };
+		F30D9C91212CABDC0047DF2E /* SDL_dummysensor.h in Headers */ = {isa = PBXBuildFile; fileRef = F30D9C8E212CABDB0047DF2E /* SDL_dummysensor.h */; };
+		F30D9C92212CABDC0047DF2E /* SDL_dummysensor.h in Headers */ = {isa = PBXBuildFile; fileRef = F30D9C8E212CABDB0047DF2E /* SDL_dummysensor.h */; };
+		F30D9C93212CABDC0047DF2E /* SDL_dummysensor.c in Sources */ = {isa = PBXBuildFile; fileRef = F30D9C8F212CABDB0047DF2E /* SDL_dummysensor.c */; };
+		F30D9C94212CABDC0047DF2E /* SDL_dummysensor.c in Sources */ = {isa = PBXBuildFile; fileRef = F30D9C8F212CABDB0047DF2E /* SDL_dummysensor.c */; };
+		F30D9C95212CABDC0047DF2E /* SDL_dummysensor.c in Sources */ = {isa = PBXBuildFile; fileRef = F30D9C8F212CABDB0047DF2E /* SDL_dummysensor.c */; };
 		F3950CD8212BC88D00F51292 /* SDL_sensor.h in Headers */ = {isa = PBXBuildFile; fileRef = F3950CD7212BC88D00F51292 /* SDL_sensor.h */; settings = {ATTRIBUTES = (Public, ); }; };
 		F3950CD9212BC88D00F51292 /* SDL_sensor.h in Headers */ = {isa = PBXBuildFile; fileRef = F3950CD7212BC88D00F51292 /* SDL_sensor.h */; settings = {ATTRIBUTES = (Public, ); }; };
 		F3950CDA212BC88D00F51292 /* SDL_sensor.h in Headers */ = {isa = PBXBuildFile; fileRef = F3950CD7212BC88D00F51292 /* SDL_sensor.h */; settings = {ATTRIBUTES = (Public, ); }; };
@@ -1244,6 +1250,8 @@
 		F30D9C81212BC94E0047DF2E /* SDL_sensor_c.h */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.h; path = SDL_sensor_c.h; sourceTree = "<group>"; };
 		F30D9C82212BC94F0047DF2E /* SDL_syssensor.h */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.h; path = SDL_syssensor.h; sourceTree = "<group>"; };
 		F30D9C83212BC94F0047DF2E /* SDL_sensor.c */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.c; path = SDL_sensor.c; sourceTree = "<group>"; };
+		F30D9C8E212CABDB0047DF2E /* SDL_dummysensor.h */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.h; path = SDL_dummysensor.h; sourceTree = "<group>"; };
+		F30D9C8F212CABDB0047DF2E /* SDL_dummysensor.c */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.c; path = SDL_dummysensor.c; sourceTree = "<group>"; };
 		F3950CD7212BC88D00F51292 /* SDL_sensor.h */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.h; path = SDL_sensor.h; sourceTree = "<group>"; };
 		F59C710300D5CB5801000001 /* ReadMe.txt */ = {isa = PBXFileReference; fileEncoding = 30; lastKnownFileType = text; path = ReadMe.txt; sourceTree = "<group>"; };
 		F59C710600D5CB5801000001 /* SDL.info */ = {isa = PBXFileReference; fileEncoding = 30; lastKnownFileType = text; path = SDL.info; sourceTree = "<group>"; };
@@ -1998,9 +2006,19 @@
 			name = "Linked Frameworks";
 			sourceTree = "<group>";
 		};
+		F30D9C8D212CABB40047DF2E /* dummy */ = {
+			isa = PBXGroup;
+			children = (
+				F30D9C8F212CABDB0047DF2E /* SDL_dummysensor.c */,
+				F30D9C8E212CABDB0047DF2E /* SDL_dummysensor.h */,
+			);
+			path = dummy;
+			sourceTree = "<group>";
+		};
 		F3950CDB212BC8BC00F51292 /* sensor */ = {
 			isa = PBXGroup;
 			children = (
+				F30D9C8D212CABB40047DF2E /* dummy */,
 				F30D9C81212BC94E0047DF2E /* SDL_sensor_c.h */,
 				F30D9C83212BC94F0047DF2E /* SDL_sensor.c */,
 				F30D9C82212BC94F0047DF2E /* SDL_syssensor.h */,
@@ -2189,6 +2207,7 @@
 				04F7804E12FB74A200FC43C0 /* SDL_blendpoint.h in Headers */,
 				56A67027185654B40007D20F /* SDL_dynapi.h in Headers */,
 				04F7804F12FB74A200FC43C0 /* SDL_draw.h in Headers */,
+				F30D9C90212CABDC0047DF2E /* SDL_dummysensor.h in Headers */,
 				04F7805112FB74A200FC43C0 /* SDL_drawline.h in Headers */,
 				04F7805312FB74A200FC43C0 /* SDL_drawpoint.h in Headers */,
 				0442EC1C12FE1BCB004C9285 /* SDL_render_sw_c.h in Headers */,
@@ -2298,6 +2317,7 @@
 				04BD027212E6671800899322 /* SDL_windowevents_c.h in Headers */,
 				04BD027312E6671800899322 /* SDL_rwopsbundlesupport.h in Headers */,
 				5C2EF6FC1FC9EE64003F5197 /* SDL_rect_c.h in Headers */,
+				F30D9C91212CABDC0047DF2E /* SDL_dummysensor.h in Headers */,
 				04BD027B12E6671800899322 /* SDL_haptic_c.h in Headers */,
 				04BD027C12E6671800899322 /* SDL_syshaptic.h in Headers */,
 				04BD028212E6671800899322 /* SDL_sysjoystick_c.h in Headers */,
@@ -2467,6 +2487,7 @@
 				DB313F8817554B71006C0E22 /* SDL_windowevents_c.h in Headers */,
 				DB313F8917554B71006C0E22 /* SDL_rwopsbundlesupport.h in Headers */,
 				5C2EF6FF1FC9EE65003F5197 /* SDL_rect_c.h in Headers */,
+				F30D9C92212CABDC0047DF2E /* SDL_dummysensor.h in Headers */,
 				DB313F8A17554B71006C0E22 /* SDL_haptic_c.h in Headers */,
 				DB313F8B17554B71006C0E22 /* SDL_syshaptic.h in Headers */,
 				DB313F8C17554B71006C0E22 /* SDL_sysjoystick_c.h in Headers */,
@@ -2804,6 +2825,7 @@
 				AADC5A441FDA035D00960936 /* SDL_render_metal.m in Sources */,
 				04F7804B12FB74A200FC43C0 /* SDL_blendline.c in Sources */,
 				04F7804D12FB74A200FC43C0 /* SDL_blendpoint.c in Sources */,
+				F30D9C93212CABDC0047DF2E /* SDL_dummysensor.c in Sources */,
 				5C2EF6F81FC9EE35003F5197 /* SDL_egl.c in Sources */,
 				04F7805012FB74A200FC43C0 /* SDL_drawline.c in Sources */,
 				04F7805212FB74A200FC43C0 /* SDL_drawpoint.c in Sources */,
@@ -2940,6 +2962,7 @@
 				AADC5A451FDA047900960936 /* SDL_render_metal.m in Sources */,
 				041B2CAB12FA0D680087D585 /* SDL_render.c in Sources */,
 				04409B9812FA97ED00FB9AA8 /* SDL_yuv_sw.c in Sources */,
+				F30D9C94212CABDC0047DF2E /* SDL_dummysensor.c in Sources */,
 				04F7803C12FB748500FC43C0 /* SDL_nullframebuffer.c in Sources */,
 				04F7805512FB74A200FC43C0 /* SDL_blendfillrect.c in Sources */,
 				04F7805712FB74A200FC43C0 /* SDL_blendline.c in Sources */,
@@ -3076,6 +3099,7 @@
 				AADC5A481FDA048100960936 /* SDL_render_metal.m in Sources */,
 				DB31405817554B71006C0E22 /* SDL_render.c in Sources */,
 				DB31405A17554B71006C0E22 /* SDL_yuv_sw.c in Sources */,
+				F30D9C95212CABDC0047DF2E /* SDL_dummysensor.c in Sources */,
 				DB31405B17554B71006C0E22 /* SDL_nullframebuffer.c in Sources */,
 				DB31405C17554B71006C0E22 /* SDL_blendfillrect.c in Sources */,
 				DB31405D17554B71006C0E22 /* SDL_blendline.c in Sources */,

configure

@@ -24135,6 +24135,18 @@ $as_echo "#define SDL_HAPTIC_ANDROID 1" >>confdefs.h
             ;;
           esac
         fi
+        # Set up files for the sensor library
+        if test x$enable_sensor = xyes; then
+          case $ARCH in
+            android)
+
+$as_echo "#define SDL_SENSOR_ANDROID 1" >>confdefs.h
+
+                SOURCES="$SOURCES $srcdir/src/sensor/android/*.c"
+                have_sensor=yes
+            ;;
+          esac
+        fi
         # Set up files for the power library
         if test x$enable_power = xyes; then
              case $ARCH in
@@ -24794,6 +24806,14 @@ $as_echo "#define SDL_HAPTIC_DISABLED 1" >>confdefs.h
     fi
     SOURCES="$SOURCES $srcdir/src/haptic/dummy/*.c"
 fi
+if test x$have_sensor != xyes; then
+    if test x$enable_sensor = xyes; then
+
+$as_echo "#define SDL_SENSOR_DISABLED 1" >>confdefs.h
+
+    fi
+    SOURCES="$SOURCES $srcdir/src/sensor/dummy/*.c"
+fi
 if test x$have_threads != xyes; then
     if test x$enable_threads = xyes; then
 

configure.in

@@ -3503,6 +3503,16 @@ case "$host" in
             ;;
           esac
         fi
+        # Set up files for the sensor library
+        if test x$enable_sensor = xyes; then
+          case $ARCH in
+            android)
+                AC_DEFINE(SDL_SENSOR_ANDROID, 1, [ ])
+                SOURCES="$SOURCES $srcdir/src/sensor/android/*.c"
+                have_sensor=yes
+            ;;
+          esac
+        fi
         # Set up files for the power library
         if test x$enable_power = xyes; then
              case $ARCH in
@@ -3998,6 +4008,12 @@ if test x$have_haptic != xyes; then
     fi
     SOURCES="$SOURCES $srcdir/src/haptic/dummy/*.c"
 fi
+if test x$have_sensor != xyes; then
+    if test x$enable_sensor = xyes; then
+        AC_DEFINE(SDL_SENSOR_DISABLED, 1, [ ])
+    fi
+    SOURCES="$SOURCES $srcdir/src/sensor/dummy/*.c"
+fi
 if test x$have_threads != xyes; then
     if test x$enable_threads = xyes; then
         AC_DEFINE(SDL_THREADS_DISABLED, 1, [ ])

include/SDL_config.h.cmake

@@ -223,6 +223,7 @@
 #cmakedefine SDL_FILE_DISABLED @SDL_FILE_DISABLED@
 #cmakedefine SDL_JOYSTICK_DISABLED @SDL_JOYSTICK_DISABLED@
 #cmakedefine SDL_HAPTIC_DISABLED @SDL_HAPTIC_DISABLED@
+#cmakedefine SDL_SENSOR_DISABLED @SDL_SENSOR_DISABLED@
 #cmakedefine SDL_LOADSO_DISABLED @SDL_LOADSO_DISABLED@
 #cmakedefine SDL_RENDER_DISABLED @SDL_RENDER_DISABLED@
 #cmakedefine SDL_THREADS_DISABLED @SDL_THREADS_DISABLED@
@@ -287,6 +288,10 @@
 #cmakedefine SDL_HAPTIC_XINPUT @SDL_HAPTIC_XINPUT@
 #cmakedefine SDL_HAPTIC_ANDROID @SDL_HAPTIC_ANDROID@
 
+/* Enable various sensor drivers */
+#cmakedefine SDL_SENSOR_ANDROID @SDL_SENSOR_ANDROID@
+#cmakedefine SDL_SENSOR_DUMMY @SDL_SENSOR_DUMMY@
+
 /* Enable various shared object loading systems */
 #cmakedefine SDL_LOADSO_DLOPEN @SDL_LOADSO_DLOPEN@
 #cmakedefine SDL_LOADSO_DUMMY @SDL_LOADSO_DUMMY@

include/SDL_config.h.in

@@ -223,6 +223,7 @@
 #undef SDL_FILE_DISABLED
 #undef SDL_JOYSTICK_DISABLED
 #undef SDL_HAPTIC_DISABLED
+#undef SDL_SENSOR_DISABLED
 #undef SDL_LOADSO_DISABLED
 #undef SDL_RENDER_DISABLED
 #undef SDL_THREADS_DISABLED
@@ -288,6 +289,10 @@
 #undef SDL_HAPTIC_DINPUT
 #undef SDL_HAPTIC_XINPUT
 
+/* Enable various sensor drivers */
+#undef SDL_SENSOR_ANDROID
+#undef SDL_SENSOR_DUMMY
+
 /* Enable various shared object loading systems */
 #undef SDL_LOADSO_DLOPEN
 #undef SDL_LOADSO_DUMMY

include/SDL_config_iphoneos.h

@@ -139,6 +139,9 @@
 #define SDL_JOYSTICK_MFI 1
 #define SDL_JOYSTICK_HIDAPI 1
 
+/* Enable the dummy sensor driver */
+#define SDL_SENSOR_DUMMY  1
+
 /* Enable Unix style SO loading */
 #define SDL_LOADSO_DLOPEN 1
 

include/SDL_config_macosx.h

@@ -140,6 +140,9 @@
 #define SDL_JOYSTICK_HIDAPI  1
 #define SDL_HAPTIC_IOKIT    1
 
+/* Enable the dummy sensor driver */
+#define SDL_SENSOR_DUMMY  1
+
 /* Enable various shared object loading systems */
 #define SDL_LOADSO_DLOPEN   1
 

include/SDL_config_minimal.h

@@ -64,6 +64,9 @@ typedef unsigned long uintptr_t;
 /* Enable the stub haptic driver (src/haptic/dummy/\*.c) */
 #define SDL_HAPTIC_DISABLED 1
 
+/* Enable the stub sensor driver (src/sensor/dummy/\*.c) */
+#define SDL_SENSOR_DISABLED 1
+
 /* Enable the stub shared object loader (src/loadso/dummy/\*.c) */
 #define SDL_LOADSO_DISABLED 1
 

include/SDL_config_pandora.h

@@ -114,6 +114,8 @@
 #define SDL_JOYSTICK_LINUX 1
 #define SDL_HAPTIC_LINUX 1
 
+#define SDL_SENSOR_DUMMY 1
+
 #define SDL_LOADSO_DLOPEN 1
 
 #define SDL_THREAD_PTHREAD 1

include/SDL_config_psp.h

@@ -128,22 +128,25 @@
 /* PSP isn't that sophisticated */
 #define LACKS_SYS_MMAN_H 1
 
-/* Enable the stub thread support (src/thread/psp/\*.c) */
+/* Enable the PSP thread support (src/thread/psp/\*.c) */
 #define SDL_THREAD_PSP  1
 
-/* Enable the stub timer support (src/timer/psp/\*.c) */
+/* Enable the PSP timer support (src/timer/psp/\*.c) */
 #define SDL_TIMERS_PSP  1
 
-/* Enable the stub joystick driver (src/joystick/psp/\*.c) */
+/* Enable the PSP joystick driver (src/joystick/psp/\*.c) */
 #define SDL_JOYSTICK_PSP        1
 
-/* Enable the stub audio driver (src/audio/psp/\*.c) */
+/* Enable the dummy sensor driver */
+#define SDL_SENSOR_DUMMY  1
+
+/* Enable the PSP audio driver (src/audio/psp/\*.c) */
 #define SDL_AUDIO_DRIVER_PSP    1
 
-/* PSP video dirver */
+/* PSP video driver */
 #define SDL_VIDEO_DRIVER_PSP   1
 
-/* PSP render dirver */
+/* PSP render driver */
 #define SDL_VIDEO_RENDER_PSP   1
 
 #define SDL_POWER_PSP          1

include/SDL_config_windows.h

@@ -194,6 +194,9 @@ typedef unsigned int uintptr_t;
 #define SDL_HAPTIC_DINPUT   1
 #define SDL_HAPTIC_XINPUT   1
 
+/* Enable the dummy sensor driver */
+#define SDL_SENSOR_DUMMY  1
+
 /* Enable various shared object loading systems */
 #define SDL_LOADSO_WINDOWS  1
 

include/SDL_config_winrt.h

@@ -192,6 +192,9 @@ typedef unsigned int uintptr_t;
 #define SDL_HAPTIC_XINPUT   1
 #endif
 
+/* Enable the dummy sensor driver */
+#define SDL_SENSOR_DUMMY  1
+
 /* Enable various shared object loading systems */
 #define SDL_LOADSO_WINDOWS  1
 

include/SDL_config_wiz.h

@@ -129,6 +129,8 @@
 #define SDL_JOYSTICK_LINUX 1
 #define SDL_HAPTIC_LINUX 1
 
+#define SDL_SENSOR_DUMMY  1
+
 #define SDL_LOADSO_DLOPEN 1
 
 #define SDL_THREAD_PTHREAD 1

src/sensor/SDL_sensor.c

@@ -33,12 +33,12 @@
 #endif
 
 static SDL_SensorDriver *SDL_sensor_drivers[] = {
-#if 0 //defined(__IPHONEOS__) || defined(__TVOS__)
-    &SDL_IOS_SensorDriver,
-#endif
 #ifdef SDL_SENSOR_ANDROID
     &SDL_ANDROID_SensorDriver,
 #endif
+#if defined(SDL_SENSOR_DUMMY) || defined(SDL_SENSOR_DISABLED)
+    &SDL_DUMMY_SensorDriver
+#endif
 };
 static SDL_Sensor *SDL_sensors = NULL;
 static SDL_bool SDL_updating_sensor = SDL_FALSE;
@@ -78,11 +78,6 @@ SDL_SensorInit(void)
     }
 #endif /* !SDL_EVENTS_DISABLED */
 
-    if (SDL_arraysize(SDL_sensor_drivers) == 0) {
-        /* What should we return here? We'll just return 0 with no sensors for now. */
-        status = 0;
-    }
-
     status = -1;
     for (i = 0; i < SDL_arraysize(SDL_sensor_drivers); ++i) {
         if (SDL_sensor_drivers[i]->Init() >= 0) {

src/sensor/SDL_syssensor.h

@@ -93,5 +93,6 @@ typedef struct _SDL_SensorDriver
 
 /* The available sensor drivers */
 extern SDL_SensorDriver SDL_ANDROID_SensorDriver;
+extern SDL_SensorDriver SDL_DUMMY_SensorDriver;
 
 /* vi: set ts=4 sw=4 expandtab: */

src/sensor/dummy/SDL_dummysensor.c

@@ -0,0 +1,110 @@
+/*
+  Simple DirectMedia Layer
+  Copyright (C) 1997-2018 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_config.h"
+
+#if defined(SDL_SENSOR_DUMMY) || defined(SDL_SENSOR_DISABLED)
+
+#include "SDL_error.h"
+#include "SDL_sensor.h"
+#include "SDL_dummysensor.h"
+#include "../SDL_syssensor.h"
+
+static int
+SDL_DUMMY_SensorInit(void)
+{
+    return 0;
+}
+
+static int
+SDL_DUMMY_SensorGetCount(void)
+{
+    return 0;
+}
+
+static void
+SDL_DUMMY_SensorDetect(void)
+{
+}
+
+static const char *
+SDL_DUMMY_SensorGetDeviceName(int device_index)
+{
+    return NULL;
+}
+
+static SDL_SensorType
+SDL_DUMMY_SensorGetDeviceType(int device_index)
+{
+    return SDL_SENSOR_INVALID;
+}
+
+static int
+SDL_DUMMY_SensorGetDeviceNonPortableType(int device_index)
+{
+    return -1;
+}
+
+static SDL_SensorID
+SDL_DUMMY_SensorGetDeviceInstanceID(int device_index)
+{
+    return -1;
+}
+
+static int
+SDL_DUMMY_SensorOpen(SDL_Sensor *sensor, int device_index)
+{
+    return SDL_Unsupported();
+}
+    
+static void
+SDL_DUMMY_SensorUpdate(SDL_Sensor* sensor)
+{
+}
+
+static void
+SDL_DUMMY_SensorClose(SDL_Sensor * sensor)
+{
+}
+
+static void
+SDL_DUMMY_SensorQuit(void)
+{
+}
+
+SDL_SensorDriver SDL_DUMMY_SensorDriver =
+{
+    SDL_DUMMY_SensorInit,
+    SDL_DUMMY_SensorGetCount,
+    SDL_DUMMY_SensorDetect,
+    SDL_DUMMY_SensorGetDeviceName,
+    SDL_DUMMY_SensorGetDeviceType,
+    SDL_DUMMY_SensorGetDeviceNonPortableType,
+    SDL_DUMMY_SensorGetDeviceInstanceID,
+    SDL_DUMMY_SensorOpen,
+    SDL_DUMMY_SensorUpdate,
+    SDL_DUMMY_SensorClose,
+    SDL_DUMMY_SensorQuit,
+};
+
+#endif /* SDL_SENSOR_DUMMY || SDL_SENSOR_DISABLED */
+
+/* vi: set ts=4 sw=4 expandtab: */

src/sensor/dummy/SDL_dummysensor.h

@@ -0,0 +1,23 @@
+/*
+  Simple DirectMedia Layer
+  Copyright (C) 1997-2018 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_config.h"
+
+/* vi: set ts=4 sw=4 expandtab: */