mirror of
https://github.com/dborth/snes9xgx.git
synced 2024-11-27 21:14:21 +01:00
123 lines
3.0 KiB
C
123 lines
3.0 KiB
C
#ifdef HW_RVL
|
|
#include <gccore.h>
|
|
|
|
static bool retrodeSetup = false;
|
|
static s32 deviceIdRetrode = 0;
|
|
static u8 endpointRetrode = 0;
|
|
static u8 bMaxPacketSizeRetrode = 0;
|
|
|
|
static u32 jpRetrode[4];
|
|
|
|
static bool isRetrodeGamepad(usb_devdesc devdesc)
|
|
{
|
|
if (devdesc.idVendor != 0x0403 || devdesc.idProduct != 0x97C1 ||
|
|
devdesc.configurations == NULL || devdesc.configurations->interfaces == NULL ||
|
|
devdesc.configurations->interfaces->endpoints == NULL)
|
|
{
|
|
return false;
|
|
}
|
|
return devdesc.configurations->interfaces->bInterfaceSubClass == 0;
|
|
}
|
|
|
|
static u8 getEndpoint(usb_devdesc devdesc)
|
|
{
|
|
if (devdesc.configurations == NULL || devdesc.configurations->interfaces == NULL ||
|
|
devdesc.configurations->interfaces->endpoints == NULL)
|
|
{
|
|
return -1;
|
|
}
|
|
return devdesc.configurations->interfaces->endpoints->bEndpointAddress;
|
|
}
|
|
|
|
static void openRetrode()
|
|
{
|
|
usb_device_entry dev_entry[8];
|
|
u8 dev_count;
|
|
if (USB_GetDeviceList(dev_entry, 8, USB_CLASS_HID, &dev_count) < 0)
|
|
{
|
|
return;
|
|
}
|
|
|
|
// Retrode has two entries in USB_GetDeviceList(), one for gamepads and one for SNES mouse
|
|
for (int i = 0; i < dev_count; ++i)
|
|
{
|
|
s32 fd;
|
|
if (USB_OpenDevice(dev_entry[i].device_id, dev_entry[i].vid, dev_entry[i].pid, &fd) < 0)
|
|
{
|
|
continue;
|
|
}
|
|
|
|
usb_devdesc devdesc;
|
|
if (USB_GetDescriptors(fd, &devdesc) < 0 || !isRetrodeGamepad(devdesc))
|
|
{
|
|
USB_CloseDevice(&fd);
|
|
continue;
|
|
}
|
|
deviceIdRetrode = fd;
|
|
endpointRetrode = getEndpoint(devdesc);
|
|
bMaxPacketSizeRetrode = devdesc.bMaxPacketSize0;
|
|
}
|
|
}
|
|
|
|
void Retrode_ScanPads()
|
|
{
|
|
if(!retrodeSetup)
|
|
{
|
|
retrodeSetup = true;
|
|
openRetrode();
|
|
}
|
|
|
|
if (deviceIdRetrode == 0)
|
|
{
|
|
return;
|
|
}
|
|
|
|
uint8_t ATTRIBUTE_ALIGN(32) buf[bMaxPacketSizeRetrode];
|
|
|
|
if (USB_ReadIntrMsg(deviceIdRetrode, endpointRetrode, sizeof(buf), buf) != 5)
|
|
{
|
|
return;
|
|
}
|
|
|
|
// buf[0] contains the port returned
|
|
// you have to make 4 calls to get the status, even if you are only interested in one port
|
|
// because it is not sure which port is returned first
|
|
// 1 = left SNES
|
|
// 2 = right SNES
|
|
// 3 = left Genesis/MD
|
|
// 4 = right Genesis/MD
|
|
|
|
// Retrode gamepad endpoint returns 5 bytes with gamepad events
|
|
u32 jp12 = 0;
|
|
jp12 |= ((buf[2] & 0x9C) == 0x9C) ? PAD_BUTTON_UP : 0;
|
|
jp12 |= ((buf[2] & 0x64) == 0x64) ? PAD_BUTTON_DOWN : 0;
|
|
jp12 |= ((buf[1] & 0x9C) == 0x9C) ? PAD_BUTTON_LEFT : 0;
|
|
jp12 |= ((buf[1] & 0x64) == 0x64) ? PAD_BUTTON_RIGHT : 0;
|
|
|
|
jp12 |= (buf[3] & 0x10) ? PAD_BUTTON_A : 0;
|
|
jp12 |= (buf[3] & 0x01) ? PAD_BUTTON_B : 0;
|
|
jp12 |= (buf[3] & 0x20) ? PAD_BUTTON_X : 0;
|
|
jp12 |= (buf[3] & 0x02) ? PAD_BUTTON_Y : 0;
|
|
|
|
jp12 |= (buf[3] & 0x40) ? PAD_TRIGGER_L : 0;
|
|
jp12 |= (buf[3] & 0x80) ? PAD_TRIGGER_R : 0;
|
|
|
|
jp12 |= (buf[3] & 0x08) ? PAD_BUTTON_START : 0;
|
|
jp12 |= (buf[3] & 0x04) ? PAD_TRIGGER_Z : 0; // SNES select button maps to Z
|
|
|
|
// Required, otherwise if the returned port isn't the one we are looking for, jp will be set to zero,
|
|
// and held buttons are not possible w/o saving the state.
|
|
jpRetrode[buf[0] - 1] = jp12;
|
|
}
|
|
|
|
u32 Retrode_ButtonsHeld(int chan)
|
|
{
|
|
if (deviceIdRetrode == 0)
|
|
{
|
|
return 0;
|
|
}
|
|
return jpRetrode[chan];
|
|
}
|
|
|
|
#endif
|