diff options
| -rw-r--r-- | Makefile.libretro | 4 | ||||
| -rw-r--r-- | frontend/libretro.c | 217 | ||||
| -rwxr-xr-x | frontend/libretro.h | 1 |
3 files changed, 200 insertions, 22 deletions
diff --git a/Makefile.libretro b/Makefile.libretro index c9e27d8..0544aab 100644 --- a/Makefile.libretro +++ b/Makefile.libretro @@ -243,6 +243,10 @@ else ifneq (,$(findstring armv,$(platform))) ifneq (,$(findstring cortexa8,$(platform))) CFLAGS += -marm -mcpu=cortex-a8 ASFLAGS += -mcpu=cortex-a8 + else ifneq (,$(findstring cortexa7,$(platform))) + CFLAGS += -marm -mcpu=cortex-a7 + ASFLAGS += -mcpu=cortex-a7 + LIBZ := else ifneq (,$(findstring cortexa9,$(platform))) CFLAGS += -marm -mcpu=cortex-a9 ASFLAGS += -mcpu=cortex-a9 diff --git a/frontend/libretro.c b/frontend/libretro.c index 4816b62..f9accf2 100644 --- a/frontend/libretro.c +++ b/frontend/libretro.c @@ -43,6 +43,10 @@ #define MIN(a, b) ((a) < (b) ? (a) : (b)) #endif +#ifndef MAX +#define MAX(a, b) ((a) > (b) ? (a) : (b)) +#endif + #define ISHEXDEC ((buf[cursor]>='0') && (buf[cursor]<='9')) || ((buf[cursor]>='a') && (buf[cursor]<='f')) || ((buf[cursor]>='A') && (buf[cursor]<='F')) //hack to prevent retroarch freezing when reseting in the menu but not while running with the hot key @@ -85,6 +89,25 @@ int multitap1 = 0; int multitap2 = 0; int in_enable_vibration = 1; +// NegCon adjustment parameters +// > The NegCon 'twist' action is somewhat awkward when mapped +// to a standard analog stick -> user should be able to tweak +// response/deadzone for comfort +// > When response is linear, 'additional' deadzone (set here) +// may be left at zero, since this is normally handled via in-game +// options menus +// > When response is non-linear, deadzone should be set to match the +// controller being used (otherwise precision may be lost) +// > negcon_linearity: +// - 1: Response is linear - recommended when using racing wheel +// peripherals, not recommended for standard gamepads +// - 2: Response is quadratic - optimal setting for gamepads +// - 3: Response is cubic - enables precise fine control, but +// difficult to use... +#define NEGCON_RANGE 0x7FFF +static int negcon_deadzone = 0; +static int negcon_linearity = 1; + /* PSX max resolution is 640x512, but with enhancement it's 1024x512 */ #define VOUT_MAX_WIDTH 1024 #define VOUT_MAX_HEIGHT 512 @@ -131,24 +154,26 @@ static void init_memcard(char *mcd_data) } } -static void vout_set_mode(int w, int h, int raw_w, int raw_h, int bpp) +static void set_vout_fb() { - vout_width = w; - vout_height = h; - struct retro_framebuffer fb = {0}; fb.width = vout_width; fb.height = vout_height; fb.access_flags = RETRO_MEMORY_ACCESS_WRITE; - vout_buf_ptr = vout_buf; - if (environ_cb(RETRO_ENVIRONMENT_GET_CURRENT_SOFTWARE_FRAMEBUFFER, &fb) && fb.format == RETRO_PIXEL_FORMAT_RGB565) - { - vout_buf_ptr = (uint16_t*)fb.data; - } + vout_buf_ptr = (uint16_t*)fb.data; + else + vout_buf_ptr = vout_buf; +} +static void vout_set_mode(int w, int h, int raw_w, int raw_h, int bpp) +{ + vout_width = w; + vout_height = h; + + set_vout_fb(); } #ifndef FRONTEND_SUPPORTS_RGB565 @@ -449,6 +474,8 @@ void retro_set_environment(retro_environment_t cb) { "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" }, + { "pcsx_rearmed_negcon_deadzone", "NegCon Twist Deadzone (percent); 0|5|10|15|20|25|30" }, + { "pcsx_rearmed_negcon_response", "NegCon Twist Response; linear|quadratic|cubic" }, { "pcsx_rearmed_vibration", "Enable Vibration; enabled|disabled" }, { "pcsx_rearmed_dithering", "Enable Dithering; enabled|disabled" }, #ifndef DRC_DISABLE @@ -1354,6 +1381,26 @@ static void update_variables(bool in_flight) update_multitap(); var.value = NULL; + var.key = "pcsx_rearmed_negcon_deadzone"; + negcon_deadzone = 0; + if (environ_cb(RETRO_ENVIRONMENT_GET_VARIABLE, &var) || var.value) + { + negcon_deadzone = (int)(atoi(var.value) * 0.01f * NEGCON_RANGE); + } + + var.value = NULL; + var.key = "pcsx_rearmed_negcon_response"; + negcon_linearity = 1; + if (environ_cb(RETRO_ENVIRONMENT_GET_VARIABLE, &var) || var.value) + { + if (strcmp(var.value, "quadratic") == 0){ + negcon_linearity = 2; + } else if (strcmp(var.value, "cubic") == 0){ + negcon_linearity = 3; + } + } + + var.value = NULL; var.key = "pcsx_rearmed_vibration"; if (environ_cb(RETRO_ENVIRONMENT_GET_VARIABLE, &var) || var.value) @@ -1533,6 +1580,38 @@ static void update_variables(bool in_flight) } } +// Taken from beetle-psx-libretro +static uint16_t get_analog_button(retro_input_state_t input_state_cb, int player_index, int id) +{ + uint16_t button; + + // NOTE: Analog buttons were added Nov 2017. Not all front-ends support this + // feature (or pre-date it) so we need to handle this in a graceful way. + + // First, try and get an analog value using the new libretro API constant + button = input_state_cb(player_index, + RETRO_DEVICE_ANALOG, + RETRO_DEVICE_INDEX_ANALOG_BUTTON, + id); + button = MIN(button / 128, 255); + + if (button == 0) + { + // If we got exactly zero, we're either not pressing the button, or the front-end + // is not reporting analog values. We need to do a second check using the classic + // digital API method, to at least get some response - better than nothing. + + // NOTE: If we're really just not holding the button, we're still going to get zero. + + button = input_state_cb(player_index, + RETRO_DEVICE_JOYPAD, + 0, + id) ? 255 : 0; + } + + return button; +} + void retro_run(void) { int i; @@ -1550,23 +1629,112 @@ void retro_run(void) // reset all keystate, query libretro for keystate int j; + int lsx; + float negcon_twist_amplitude; for(i = 0; i < PORTS_NUMBER; i++) { in_keystate[i] = 0; if (in_type[i] == PSE_PAD_TYPE_NONE) continue; - // query libretro for keystate - for (j = 0; j < RETRO_PSX_MAP_LEN; j++) - if (input_state_cb(i, RETRO_DEVICE_JOYPAD, 0, j)) - in_keystate[i] |= retro_psx_map[j]; - - if (in_type[i] == PSE_PAD_TYPE_ANALOGPAD) + if (in_type[i] == PSE_PAD_TYPE_NEGCON) { - in_analog_left[i][0] = MIN((input_state_cb(i, RETRO_DEVICE_ANALOG, RETRO_DEVICE_INDEX_ANALOG_LEFT, RETRO_DEVICE_ID_ANALOG_X) / 255) + 128, 255); - in_analog_left[i][1] = MIN((input_state_cb(i, RETRO_DEVICE_ANALOG, RETRO_DEVICE_INDEX_ANALOG_LEFT, RETRO_DEVICE_ID_ANALOG_Y) / 255) + 128, 255); - in_analog_right[i][0] = MIN((input_state_cb(i, RETRO_DEVICE_ANALOG, RETRO_DEVICE_INDEX_ANALOG_RIGHT, RETRO_DEVICE_ID_ANALOG_X) / 255) + 128, 255); - in_analog_right[i][1] = MIN((input_state_cb(i, RETRO_DEVICE_ANALOG, RETRO_DEVICE_INDEX_ANALOG_RIGHT, RETRO_DEVICE_ID_ANALOG_Y) / 255) + 128, 255); + // Query digital inputs + // + // > Pad-Up + if (input_state_cb(i, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_UP)){ + in_keystate[i] |= (1 << DKEY_UP); + } + // > Pad-Right + if (input_state_cb(i, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_RIGHT)){ + in_keystate[i] |= (1 << DKEY_RIGHT); + } + // > Pad-Down + if (input_state_cb(i, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_DOWN)){ + in_keystate[i] |= (1 << DKEY_DOWN); + } + // > Pad-Left + if (input_state_cb(i, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_LEFT)){ + in_keystate[i] |= (1 << DKEY_LEFT); + } + // > Start + if (input_state_cb(i, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_START)){ + in_keystate[i] |= (1 << DKEY_START); + } + // > neGcon A + if (input_state_cb(i, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_A)){ + in_keystate[i] |= (1 << DKEY_CIRCLE); + } + // > neGcon B + if (input_state_cb(i, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_X)){ + in_keystate[i] |= (1 << DKEY_TRIANGLE); + } + // > neGcon R shoulder (digital) + if (input_state_cb(i, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_R)){ + in_keystate[i] |= (1 << DKEY_R1); + } + // Query analog inputs + // + // From studying 'libpcsxcore/plugins.c' and 'frontend/plugin.c': + // >> pad->leftJoyX == in_analog_left[i][0] == NeGcon II + // >> pad->leftJoyY == in_analog_left[i][1] == NeGcon L + // >> pad->rightJoyX == in_analog_right[i][0] == NeGcon twist + // >> pad->rightJoyY == in_analog_right[i][1] == NeGcon I + // So we just have to map in_analog_left/right to more + // appropriate inputs... + // + // > NeGcon twist + // >> Get raw analog stick value and account for deadzone + lsx = input_state_cb(i, RETRO_DEVICE_ANALOG, RETRO_DEVICE_INDEX_ANALOG_LEFT, RETRO_DEVICE_ID_ANALOG_X); + if (lsx > negcon_deadzone){ + lsx = lsx - negcon_deadzone; + } else if (lsx < -negcon_deadzone){ + lsx = lsx + negcon_deadzone; + } else { + lsx = 0; + } + // >> Convert to an 'amplitude' [-1.0,1.0] and adjust response + negcon_twist_amplitude = (float)lsx / (float)(NEGCON_RANGE - negcon_deadzone); + if (negcon_linearity == 2){ + if (negcon_twist_amplitude < 0.0){ + negcon_twist_amplitude = -(negcon_twist_amplitude * negcon_twist_amplitude); + } else { + negcon_twist_amplitude = negcon_twist_amplitude * negcon_twist_amplitude; + } + } else if (negcon_linearity == 3){ + negcon_twist_amplitude = negcon_twist_amplitude * negcon_twist_amplitude * negcon_twist_amplitude; + } + // >> Convert to final 'in_analog' integer value [0,255] + in_analog_right[i][0] = MAX(MIN((int)(negcon_twist_amplitude * 128.0f) + 128, 255), 0); + // > NeGcon I + in_analog_right[i][1] = MAX( + get_analog_button(input_state_cb, i, RETRO_DEVICE_ID_JOYPAD_R2), + get_analog_button(input_state_cb, i, RETRO_DEVICE_ID_JOYPAD_B) + ); + // > NeGcon II + in_analog_left[i][0] = MAX( + get_analog_button(input_state_cb, i, RETRO_DEVICE_ID_JOYPAD_L2), + get_analog_button(input_state_cb, i, RETRO_DEVICE_ID_JOYPAD_Y) + ); + // > NeGcon L + in_analog_left[i][1] = get_analog_button(input_state_cb, i, RETRO_DEVICE_ID_JOYPAD_L); + } + else + { + // Query digital inputs + for (j = 0; j < RETRO_PSX_MAP_LEN; j++){ + if (input_state_cb(i, RETRO_DEVICE_JOYPAD, 0, j)){ + in_keystate[i] |= retro_psx_map[j]; + } + } + // Query analog inputs + if (in_type[i] == PSE_PAD_TYPE_ANALOGPAD) + { + in_analog_left[i][0] = MIN((input_state_cb(i, RETRO_DEVICE_ANALOG, RETRO_DEVICE_INDEX_ANALOG_LEFT, RETRO_DEVICE_ID_ANALOG_X) / 255) + 128, 255); + in_analog_left[i][1] = MIN((input_state_cb(i, RETRO_DEVICE_ANALOG, RETRO_DEVICE_INDEX_ANALOG_LEFT, RETRO_DEVICE_ID_ANALOG_Y) / 255) + 128, 255); + in_analog_right[i][0] = MIN((input_state_cb(i, RETRO_DEVICE_ANALOG, RETRO_DEVICE_INDEX_ANALOG_RIGHT, RETRO_DEVICE_ID_ANALOG_X) / 255) + 128, 255); + in_analog_right[i][1] = MIN((input_state_cb(i, RETRO_DEVICE_ANALOG, RETRO_DEVICE_INDEX_ANALOG_RIGHT, RETRO_DEVICE_ID_ANALOG_Y) / 255) + 128, 255); + } } } @@ -1576,6 +1744,8 @@ void retro_run(void) video_cb((vout_fb_dirty || !vout_can_dupe || !duping_enable) ? vout_buf_ptr : NULL, vout_width, vout_height, vout_width * 2); vout_fb_dirty = 0; + + set_vout_fb(); } static bool try_use_bios(const char *path) @@ -1620,7 +1790,7 @@ static bool find_any_bios(const char *dirpath, char *path, size_t path_size) if (strncasecmp(ent->d_name, "scph", 4) != 0) continue; - snprintf(path, path_size, "%s/%s", dirpath, ent->d_name); + snprintf(path, path_size, "%s%c%s", dirpath, SLASH, ent->d_name); ret = try_use_bios(path); if (ret) break; @@ -1675,7 +1845,10 @@ static int init_memcards(void) void retro_init(void) { - const char *bios[] = { "SCPH101", "SCPH7001", "SCPH5501", "SCPH1001" }; + const char *bios[] = { + "SCPH101", "SCPH7001", "SCPH5501", "SCPH1001", + "scph101", "scph7001", "scph5501", "scph1001" + }; const char *dir; char path[256]; int i, ret; @@ -1726,7 +1899,7 @@ void retro_init(void) snprintf(Config.BiosDir, sizeof(Config.BiosDir), "%s", dir); for (i = 0; i < sizeof(bios) / sizeof(bios[0]); i++) { - snprintf(path, sizeof(path), "%s/%s.bin", dir, bios[i]); + snprintf(path, sizeof(path), "%s%c%s.bin", dir, SLASH, bios[i]); found_bios = try_use_bios(path); if (found_bios) break; diff --git a/frontend/libretro.h b/frontend/libretro.h index a231548..8456415 100755 --- a/frontend/libretro.h +++ b/frontend/libretro.h @@ -195,6 +195,7 @@ extern "C" { /* Index / Id values for ANALOG device. */ #define RETRO_DEVICE_INDEX_ANALOG_LEFT 0 #define RETRO_DEVICE_INDEX_ANALOG_RIGHT 1 +#define RETRO_DEVICE_INDEX_ANALOG_BUTTON 2 #define RETRO_DEVICE_ID_ANALOG_X 0 #define RETRO_DEVICE_ID_ANALOG_Y 1 |