Add support for Raphnet adapters

Makefile

@@ -65,7 +65,7 @@ RENDER_API ?= GL
 WINDOW_API ?= SDL2
 # Audio backends: SDL1, SDL2
 AUDIO_API ?= SDL2
-# Controller backends (can have multiple, space separated): SDL2, SDL1
+# Controller backends (can have multiple, space separated): SDL2, SDL1, RAPHNET
 CONTROLLER_API ?= SDL2
 
 # Misc settings for EXTERNAL_DATA
@@ -316,6 +316,10 @@ LEVEL_DIRS := $(patsubst levels/%,%,$(dir $(wildcard levels/*/header.h)))
 SRC_DIRS := src src/engine src/game src/audio src/menu src/buffers actors levels bin data assets src/pc src/pc/gfx src/pc/audio src/pc/controller src/pc/fs src/pc/fs/packtypes
 ASM_DIRS :=
 
+ifneq (,$(findstring RAPHNET,${CONTROLLER_API}))
+  SRC_DIRS += src/pc/controller/raphnet
+endif
+
 ifeq ($(DISCORDRPC),1)
   SRC_DIRS += src/pc/discord
 endif
@@ -571,6 +575,10 @@ ifneq ($(SDL1_USED)$(SDL2_USED),00)
   endif
 endif
 
+ifneq (,$(findstring RAPHNET,${CONTROLLER_API}))
+  BACKEND_LDFLAGS += -lhidapi
+endif
+
 ifeq ($(WINDOWS_BUILD),1)
   CC_CHECK := $(CC) -fsyntax-only -fsigned-char $(BACKEND_CFLAGS) $(INCLUDE_CFLAGS) -Wall -Wextra -Wno-format-security $(VERSION_CFLAGS) $(GRUCODE_CFLAGS)
   CFLAGS := $(OPT_FLAGS) $(INCLUDE_CFLAGS) $(BACKEND_CFLAGS) $(VERSION_CFLAGS) $(GRUCODE_CFLAGS) -fno-strict-aliasing -fwrapv

src/pc/controller/controller_entry_point.c

@@ -7,12 +7,16 @@
 #include "controller_recorded_tas.h"
 #include "controller_keyboard.h"
 #include "controller_sdl.h"
+#include "controller_raphnet.h"
 
 // Analog camera movement by Pathétique (github.com/vrmiguel), y0shin and Mors
 // Contribute or communicate bugs at github.com/vrmiguel/sm64-analog-camera
 
 static struct ControllerAPI *controller_implementations[] = {
     &controller_recorded_tas,
+    #if defined(CAPI_RAPHNET)
+    &controller_raphnet,
+    #endif
     #if defined(CAPI_SDL2) || defined(CAPI_SDL1)
     &controller_sdl,
     #endif

src/pc/controller/controller_raphnet.c

@@ -0,0 +1,121 @@
+#ifdef CAPI_RAPHNET
+
+#include <stdarg.h>
+#include <stdio.h>
+
+#include "controller_api.h"
+#include "raphnet/plugin_back.h"
+#include "lib/src/osContInternal.h"
+#include "macros.h"
+
+static int l_PluginInit = 0;
+static int n_controllers = 0;
+
+static u32 pifRam[16];
+
+static void DebugMessage(int level, const char *message, ...) {
+    switch (level) {
+        case PB_MSG_ERROR:
+            printf("Raphnet: [ERROR] ");
+            break;
+        case PB_MSG_WARNING:
+            printf("Raphnet: [WARNING] ");
+            break;
+        case PB_MSG_INFO:
+            printf("Raphnet: [INFO] ");
+            break;
+        case PB_MSG_STATUS:
+            printf("Raphnet: [STATUS] ");
+            break;
+        case PB_MSG_VERBOSE:
+            printf("Raphnet: [VERBOSE] ");
+            break;
+        default:
+            printf("Raphnet: ");
+            break;
+    }
+
+    va_list args;
+    va_start(args, message);
+    vprintf(message, args);
+    va_end(args);
+}
+
+static void controller_raphnet_init() {
+    if (l_PluginInit) {
+        return;
+    }
+    l_PluginInit = 1;
+
+    pb_init(DebugMessage);
+
+    n_controllers = pb_scanControllers();
+	if (n_controllers <= 0) {
+    	DebugMessage(PB_MSG_ERROR, "No adapters detected\n");
+		return;
+	}
+
+    pb_romOpen();
+}
+
+static void controller_raphnet_read(OSContPad *pad) {
+    if (n_controllers <= 0) {
+		return;
+	}
+
+    u8 *cmdBufPtr;
+    OSContPackedRequest request;
+    s32 i;
+    cmdBufPtr = (u8 *) pifRam;
+
+    for (i = 0; i < 16; i++) {
+        pifRam[i] = 0;
+    }
+
+    request.padOrEnd = 0xff;
+    request.txLen = 1;
+    request.rxLen = 4;
+    request.command = 1;
+    request.data1 = 0xff;
+    request.data2 = 0xff;
+    request.data3 = 0xff;
+    request.data4 = 0xff;
+    for (i = 0; i < 4; i++) {
+        * (OSContPackedRequest *) cmdBufPtr = request;
+        cmdBufPtr += sizeof(OSContPackedRequest);
+    }
+    *cmdBufPtr = 0xfe;
+
+    pb_readController(0, (u8 *) pifRam + 1);
+    pb_readController(-1, NULL);
+
+    OSContPackedRead response = * (OSContPackedRead *) pifRam;
+    pad->errnum = (response.rxLen & 0xc0) >> 4;
+    if (pad->errnum == 0) {
+        pad->button = BE_TO_HOST16(response.button);
+        pad->stick_x = response.rawStickX;
+        pad->stick_y = response.rawStickY;
+    }
+}
+
+static u32 controller_raphnet_rawkey() {
+    return VK_INVALID;
+}
+
+static void controller_raphnet_shutdown() {
+    pb_romClosed();
+    pb_shutdown();
+}
+
+struct ControllerAPI controller_raphnet = {
+    VK_INVALID,
+    controller_raphnet_init,
+    controller_raphnet_read,
+    controller_raphnet_rawkey,
+    NULL,
+    NULL,
+    NULL,
+    controller_raphnet_shutdown,
+};
+
+#endif // CAPI_RAPHNET

src/pc/controller/controller_raphnet.h

@@ -0,0 +1,8 @@
+#ifndef CONTROLLER_RAPHNET_H
+#define CONTROLLER_RAPHNET_H
+
+#include "controller_api.h"
+
+extern struct ControllerAPI controller_raphnet;
+
+#endif