libretro: Implement retro_set_controller_port_device()

Add the 'default' value to controller type variables and set it as the
default value and implements the retro_set_controller_port_device()
function. When the variable's value is 'default', the value set via the
function is used, otherwise the value of the variable is used.

This allows the frontends to use retro_set_controller_port_device() or
the variables, pleasing both the users and frontends prefering the
standard API and the ones prefering the custom API.

diff --git a/frontend/libretro.c b/frontend/libretro.c
index 274d6d5..d6c1ab8 100644 (file)
--- a/frontend/libretro.c
+++ b/frontend/libretro.c
@@ -335,14 +335,14 @@ void retro_set_environment(retro_environment_t cb)
    static const struct retro_variable vars[] = {
       { "pcsx_rearmed_frameskip", "Frameskip; 0|1|2|3" },
       { "pcsx_rearmed_region", "Region; Auto|NTSC|PAL" },
-      { "pcsx_rearmed_pad1type", "Pad 1 Type; none|standard|analog|negcon" },
-      { "pcsx_rearmed_pad2type", "Pad 2 Type; none|standard|analog|negcon" },
-      { "pcsx_rearmed_pad3type", "Pad 3 Type; none|standard|analog|negcon" },
-      { "pcsx_rearmed_pad4type", "Pad 4 Type; none|standard|analog|negcon" },
-      { "pcsx_rearmed_pad5type", "Pad 5 Type; none|standard|analog|negcon" },
-      { "pcsx_rearmed_pad6type", "Pad 6 Type; none|standard|analog|negcon" },
-      { "pcsx_rearmed_pad7type", "Pad 7 Type; none|standard|analog|negcon" },
-      { "pcsx_rearmed_pad8type", "Pad 8 Type; none|standard|analog|negcon" },
+      { "pcsx_rearmed_pad1type", "Pad 1 Type; default|none|standard|analog|negcon" },
+      { "pcsx_rearmed_pad2type", "Pad 2 Type; default|none|standard|analog|negcon" },
+      { "pcsx_rearmed_pad3type", "Pad 3 Type; default|none|standard|analog|negcon" },
+      { "pcsx_rearmed_pad4type", "Pad 4 Type; default|none|standard|analog|negcon" },
+      { "pcsx_rearmed_pad5type", "Pad 5 Type; default|none|standard|analog|negcon" },
+      { "pcsx_rearmed_pad6type", "Pad 6 Type; default|none|standard|analog|negcon" },
+      { "pcsx_rearmed_pad7type", "Pad 7 Type; default|none|standard|analog|negcon" },
+      { "pcsx_rearmed_pad8type", "Pad 8 Type; default|none|standard|analog|negcon" },
       { "pcsx_rearmed_multitap1", "Multitap 1; auto|disabled|enabled" },
       { "pcsx_rearmed_multitap2", "Multitap 2; auto|disabled|enabled" },
 #ifndef DRC_DISABLE
@@ -377,7 +377,7 @@ unsigned retro_api_version(void)
        return RETRO_API_VERSION;
 }
 
-static void update_controller_port_device(unsigned port)
+static void update_controller_port_device(unsigned port, unsigned device)
 {
        if (port >= PORTS_NUMBER)
                return;
@@ -392,7 +392,7 @@ static void update_controller_port_device(unsigned port)
        struct retro_variable var;
 
        var.value = NULL;
-       var.key = "pcsx_rearmed_pad1type";
+       var.key = CONTROLLER_VARIABLE[port];
        if (environ_cb(RETRO_ENVIRONMENT_GET_VARIABLE, &var) || var.value)
        {
                if (strcmp(var.value, "standard") == 0)
@@ -401,8 +401,29 @@ static void update_controller_port_device(unsigned port)
                        in_type[0] = PSE_PAD_TYPE_ANALOGPAD;
                else if (strcmp(var.value, "negcon") == 0)
                        in_type[0] = PSE_PAD_TYPE_NEGCON;
-               else // 'none' case
+               else if (strcmp(var.value, "none") == 0)
                        in_type[0] = PSE_PAD_TYPE_NONE;
+               else // 'default' case
+               {
+                       switch (device)
+                       {
+                       case RETRO_DEVICE_JOYPAD:
+                               in_type[port] = PSE_PAD_TYPE_STANDARD;
+                               break;
+                       case RETRO_DEVICE_ANALOG:
+                               in_type[port] = PSE_PAD_TYPE_ANALOGPAD;
+                               break;
+                       case RETRO_DEVICE_MOUSE:
+                               in_type[port] = PSE_PAD_TYPE_MOUSE;
+                               break;
+                       case RETRO_DEVICE_LIGHTGUN:
+                               in_type[port] = PSE_PAD_TYPE_GUN;
+                               break;
+                       case RETRO_DEVICE_NONE:
+                       default:
+                               in_type[port] = PSE_PAD_TYPE_NONE;
+                       }
+               }
        }
 }
 
@@ -448,6 +469,12 @@ static void update_multitap()
 void retro_set_controller_port_device(unsigned port, unsigned device)
 {
        SysPrintf("port %u  device %u",port,device);
+
+       if (port >= PORTS_NUMBER)
+               return;
+
+       update_controller_port_device(port, device);
+       update_multitap();
 }
 
 void retro_get_system_info(struct retro_system_info *info)
@@ -1141,7 +1168,7 @@ static void update_variables(bool in_flight)
    }
 
    for (int i = 0; i < PORTS_NUMBER; i++)
-      update_controller_port_device(i);
+      update_controller_port_device(i, RETRO_DEVICE_NONE);
 
    update_multitap();