Wii: Add libwiidrc support

CHANGES

@@ -14,6 +14,7 @@ Features:
  - ARM disassembler now resolves addresses to symbol names
  - Add Game Boy Player feature support to ports
  - Individual window types can now be toggled in debugging views
+ - Support for the Wii U GamePad when running as an injected VC title
 Emulation fixes:
  - ARM: Fix ALU reading PC after shifting
  - ARM: Fix STR storing PC after address calculation

src/platform/wii/CMakeLists.txt

@@ -3,6 +3,11 @@ find_program(GXTEXCONV gxtexconv)
 find_program(RAW2C raw2c)
 find_program(WIILOAD wiiload)
 
+find_library(WIIDRC_LIBRARY wiidrc)
+if(WIIDRC_LIBRARY)
+    add_definitions(-DWIIDRC)
+endif()
+
 set(OS_DEFINES _GNU_SOURCE COLOR_16_BIT COLOR_5_6_5 USE_VFS_FILE IOAPI_NO_64 FIXED_ROM_BUFFER)
 list(APPEND CORE_VFS_SRC ${CMAKE_SOURCE_DIR}/src/util/vfs/vfs-file.c ${CMAKE_SOURCE_DIR}/src/util/vfs/vfs-dirent.c ${CMAKE_SOURCE_DIR}/src/util/vfs/vfs-devlist.c)
 
@@ -20,6 +25,9 @@ set_source_files_properties(${CMAKE_CURRENT_BINARY_DIR}/font.c PROPERTIES GENERA
 add_executable(${BINARY_NAME}.elf ${GUI_SRC} main.c)
 set_target_properties(${BINARY_NAME}.elf PROPERTIES COMPILE_DEFINITIONS "${OS_DEFINES};${FEATURE_DEFINES};${FUNCTION_DEFINES}")
 target_link_libraries(${BINARY_NAME}.elf ${BINARY_NAME} ${OS_LIB})
+if(WIIDRC_LIBRARY)
+    target_link_libraries(${BINARY_NAME}.elf ${WIIDRC_LIBRARY})
+endif()
 
 add_custom_command(OUTPUT ${CMAKE_CURRENT_BINARY_DIR}/font.tpl
                    COMMAND ${GXTEXCONV} -i ${CMAKE_SOURCE_DIR}/res/font2x.png -o font.tpl colfmt=5 mipmap=no

src/platform/wii/main.c

@@ -28,10 +28,15 @@
 #include <mgba-util/memory.h>
 #include <mgba-util/vfs.h>
 
+#ifdef WIIDRC
+#include <wiidrc/wiidrc.h>
+#endif
+
 #define GCN1_INPUT 0x47434E31
 #define GCN2_INPUT 0x47434E32
 #define WIIMOTE_INPUT 0x5749494D
 #define CLASSIC_INPUT 0x57494943
+#define DRC_INPUT 0x44524355
 
 #define TEX_W 256
 #define TEX_H 224
@@ -254,6 +259,9 @@ int main(int argc, char* argv[]) {
 	PAD_Init();
 	WPAD_Init();
 	WPAD_SetDataFormat(0, WPAD_FMT_BTNS_ACC_IR);
+#ifdef WIIDRC
+	WiiDRC_Init();
+#endif
 	AUDIO_Init(0);
 	AUDIO_SetDSPSampleRate(AI_SAMPLERATE_48KHZ);
 	AUDIO_RegisterDMACallback(_audioDMA);
@@ -452,6 +460,31 @@ int main(int argc, char* argv[]) {
 				},
 				.nKeys = 32
 			},
+#ifdef WIIDRC
+			{
+				.name = "Wii U GamePad Input",
+				.id = DRC_INPUT,
+				.keyNames = (const char*[]) {
+					0, // Sync
+					"\1\xE",
+					"-",
+					"+",
+					"R",
+					"L",
+					"ZR",
+					"ZL",
+					"Down",
+					"Up",
+					"Right",
+					"Left",
+					"Y",
+					"X",
+					"B",
+					"A",
+				},
+				.nKeys = 16
+			},
+#endif
 			{ .id = 0 }
 		},
 		.configExtra = (struct GUIMenuItem[]) {
@@ -576,6 +609,15 @@ int main(int argc, char* argv[]) {
 	_mapKey(&runner.params.keyMap, CLASSIC_INPUT, WPAD_CLASSIC_BUTTON_LEFT, GUI_INPUT_LEFT);
 	_mapKey(&runner.params.keyMap, CLASSIC_INPUT, WPAD_CLASSIC_BUTTON_RIGHT, GUI_INPUT_RIGHT);
 
+#ifdef WIIDRC
+	_mapKey(&runner.params.keyMap, DRC_INPUT, WIIDRC_BUTTON_A, GUI_INPUT_SELECT);
+	_mapKey(&runner.params.keyMap, DRC_INPUT, WIIDRC_BUTTON_B, GUI_INPUT_BACK);
+	_mapKey(&runner.params.keyMap, DRC_INPUT, WIIDRC_BUTTON_X, GUI_INPUT_CANCEL);
+	_mapKey(&runner.params.keyMap, DRC_INPUT, WIIDRC_BUTTON_UP, GUI_INPUT_UP);
+	_mapKey(&runner.params.keyMap, DRC_INPUT, WIIDRC_BUTTON_DOWN, GUI_INPUT_DOWN);
+	_mapKey(&runner.params.keyMap, DRC_INPUT, WIIDRC_BUTTON_LEFT, GUI_INPUT_LEFT);
+	_mapKey(&runner.params.keyMap, DRC_INPUT, WIIDRC_BUTTON_RIGHT, GUI_INPUT_RIGHT);
+#endif
 
 	float stretch = 0;
 	if (mCoreConfigGetFloatValue(&runner.config, "stretchWidth", &stretch)) {
@@ -701,29 +743,48 @@ static uint32_t _pollInput(const struct mInputMap* map) {
 	u32 ext = 0;
 	WPAD_Probe(0, &ext);
 
+#ifdef WIIDRC
+	u32 drckeys = 0;
+	if (WiiDRC_ScanPads()) {
+		drckeys = WiiDRC_ButtonsHeld();
+	}
+#endif
+
 	int keys = 0;
 	keys |= mInputMapKeyBits(map, GCN1_INPUT, padkeys, 0);
 	keys |= mInputMapKeyBits(map, GCN2_INPUT, padkeys, 0);
 	keys |= mInputMapKeyBits(map, WIIMOTE_INPUT, wiiPad, 0);
+#ifdef WIIDRC
+	keys |= mInputMapKeyBits(map, DRC_INPUT, drckeys, 0);
+#endif
 	if (ext == WPAD_EXP_CLASSIC) {
 		keys |= mInputMapKeyBits(map, CLASSIC_INPUT, wiiPad, 0);
 	}
 	int x = PAD_StickX(0);
 	int y = PAD_StickY(0);
-	int w_x = WPAD_StickX(0, 0);
+	int wX = WPAD_StickX(0, 0);
-	int w_y = WPAD_StickY(0, 0);
+	int wY = WPAD_StickY(0, 0);
-	if (x < -ANALOG_DEADZONE || w_x < -ANALOG_DEADZONE) {
+	ATTRIBUTE_UNUSED int drcX = 0;
+	ATTRIBUTE_UNUSED int drcY = 0;
+#ifdef WIIDRC
+	if (WiiDRC_Connected()) {
+		drcX = WiiDRC_lStickX();
+		drcY = WiiDRC_lStickY();
+	}
+#endif
+	if (x < -ANALOG_DEADZONE || wX < -ANALOG_DEADZONE || drcX < -ANALOG_DEADZONE) {
 		keys |= 1 << GUI_INPUT_LEFT;
 	}
-	if (x > ANALOG_DEADZONE || w_x > ANALOG_DEADZONE) {
+	if (x > ANALOG_DEADZONE || wX > ANALOG_DEADZONE || drcX > ANALOG_DEADZONE) {
 		keys |= 1 << GUI_INPUT_RIGHT;
 	}
-	if (y < -ANALOG_DEADZONE || w_y < -ANALOG_DEADZONE) {
+	if (y < -ANALOG_DEADZONE || wY < -ANALOG_DEADZONE || drcY < -ANALOG_DEADZONE) {
 		keys |= 1 << GUI_INPUT_DOWN;
 	}
-	if (y > ANALOG_DEADZONE || w_y > ANALOG_DEADZONE) {
+	if (y > ANALOG_DEADZONE || wY > ANALOG_DEADZONE || drcY > ANALOG_DEADZONE) {
 		keys |= 1 << GUI_INPUT_UP;
 	}
+
 	return keys;
 }
 
@@ -803,12 +864,27 @@ void _setup(struct mGUIRunner* runner) {
 	_mapKey(&runner->core->inputMap, CLASSIC_INPUT, WPAD_CLASSIC_BUTTON_FULL_L, GBA_KEY_L);
 	_mapKey(&runner->core->inputMap, CLASSIC_INPUT, WPAD_CLASSIC_BUTTON_FULL_R, GBA_KEY_R);
 
+#ifdef WIIDRC
+	_mapKey(&runner->core->inputMap, DRC_INPUT, WIIDRC_BUTTON_A, GBA_KEY_A);
+	_mapKey(&runner->core->inputMap, DRC_INPUT, WIIDRC_BUTTON_B, GBA_KEY_B);
+	_mapKey(&runner->core->inputMap, DRC_INPUT, WIIDRC_BUTTON_PLUS, GBA_KEY_START);
+	_mapKey(&runner->core->inputMap, DRC_INPUT, WIIDRC_BUTTON_MINUS, GBA_KEY_SELECT);
+	_mapKey(&runner->core->inputMap, DRC_INPUT, WIIDRC_BUTTON_UP, GBA_KEY_UP);
+	_mapKey(&runner->core->inputMap, DRC_INPUT, WIIDRC_BUTTON_DOWN, GBA_KEY_DOWN);
+	_mapKey(&runner->core->inputMap, DRC_INPUT, WIIDRC_BUTTON_LEFT, GBA_KEY_LEFT);
+	_mapKey(&runner->core->inputMap, DRC_INPUT, WIIDRC_BUTTON_RIGHT, GBA_KEY_RIGHT);
+	_mapKey(&runner->core->inputMap, DRC_INPUT, WIIDRC_BUTTON_L, GBA_KEY_L);
+	_mapKey(&runner->core->inputMap, DRC_INPUT, WIIDRC_BUTTON_R, GBA_KEY_R);
+#endif
+
 	struct mInputAxis desc = { GBA_KEY_RIGHT, GBA_KEY_LEFT, ANALOG_DEADZONE, -ANALOG_DEADZONE };
 	mInputBindAxis(&runner->core->inputMap, GCN1_INPUT, 0, &desc);
 	mInputBindAxis(&runner->core->inputMap, CLASSIC_INPUT, 0, &desc);
+	mInputBindAxis(&runner->core->inputMap, DRC_INPUT, 0, &desc);
 	desc = (struct mInputAxis) { GBA_KEY_UP, GBA_KEY_DOWN, ANALOG_DEADZONE, -ANALOG_DEADZONE };
 	mInputBindAxis(&runner->core->inputMap, GCN1_INPUT, 1, &desc);
 	mInputBindAxis(&runner->core->inputMap, CLASSIC_INPUT, 1, &desc);
+	mInputBindAxis(&runner->core->inputMap, DRC_INPUT, 1, &desc);
 
 	outputBuffer = memalign(32, TEX_W * TEX_H * BYTES_PER_PIXEL);
 	runner->core->setVideoBuffer(runner->core, outputBuffer, TEX_W);
@@ -1033,9 +1109,18 @@ uint16_t _pollGameInput(struct mGUIRunner* runner) {
 	u32 wiiPad = WPAD_ButtonsHeld(0);
 	u32 ext = 0;
 	WPAD_Probe(0, &ext);
+#ifdef WIIDRC
+	u32 drckeys = 0;
+	if (WiiDRC_ScanPads()) {
+		drckeys = WiiDRC_ButtonsHeld();
+	}
+#endif
 	uint16_t keys = mInputMapKeyBits(&runner->core->inputMap, GCN1_INPUT, padkeys, 0);
 	keys |= mInputMapKeyBits(&runner->core->inputMap, GCN2_INPUT, padkeys, 0);
 	keys |= mInputMapKeyBits(&runner->core->inputMap, WIIMOTE_INPUT, wiiPad, 0);
+#ifdef WIIDRC
+	keys |= mInputMapKeyBits(&runner->core->inputMap, DRC_INPUT, drckeys, 0);
+#endif
 
 	enum GBAKey angles = mInputMapAxis(&runner->core->inputMap, GCN1_INPUT, 0, PAD_StickX(0));
 	if (angles != GBA_KEY_NONE) {
@@ -1056,6 +1141,19 @@ uint16_t _pollGameInput(struct mGUIRunner* runner) {
 			keys |= 1 << angles;
 		}
 	}
+#ifdef WIIDRC
+	if (WiiDRC_Connected()) {
+		keys |= mInputMapKeyBits(&runner->core->inputMap, DRC_INPUT, drckeys, 0);
+		angles = mInputMapAxis(&runner->core->inputMap, DRC_INPUT, 0, WiiDRC_lStickX());
+		if (angles != GBA_KEY_NONE) {
+			keys |= 1 << angles;
+		}
+		angles = mInputMapAxis(&runner->core->inputMap, DRC_INPUT, 1, WiiDRC_lStickY());
+		if (angles != GBA_KEY_NONE) {
+			keys |= 1 << angles;
+		}
+	}
+#endif
 
 	return keys;
 }