mirror of
https://github.com/libretro/RetroArch.git
synced 2024-11-24 08:30:16 +00:00
470 lines
14 KiB
C
470 lines
14 KiB
C
#include "../libretro.h"
|
|
#include <stdint.h>
|
|
#include <string.h>
|
|
#include <math.h>
|
|
#include <stdlib.h>
|
|
#include <stdio.h>
|
|
#include <stdarg.h>
|
|
|
|
static uint16_t *frame_buf;
|
|
static struct retro_log_callback logging;
|
|
static bool use_audio_cb;
|
|
static float last_aspect;
|
|
static float last_sample_rate;
|
|
|
|
static void fallback_log(enum retro_log_level level, const char *fmt, ...)
|
|
{
|
|
(void)level;
|
|
va_list va;
|
|
va_start(va, fmt);
|
|
vfprintf(stderr, fmt, va);
|
|
va_end(va);
|
|
}
|
|
|
|
void retro_init(void)
|
|
{
|
|
frame_buf = calloc(320 * 240, sizeof(uint16_t));
|
|
}
|
|
|
|
void retro_deinit(void)
|
|
{
|
|
free(frame_buf);
|
|
frame_buf = NULL;
|
|
}
|
|
|
|
unsigned retro_api_version(void)
|
|
{
|
|
return RETRO_API_VERSION;
|
|
}
|
|
|
|
void retro_set_controller_port_device(unsigned port, unsigned device)
|
|
{
|
|
logging.log(RETRO_LOG_INFO, "Plugging device %u into port %u.\n", device, port);
|
|
}
|
|
|
|
void retro_get_system_info(struct retro_system_info *info)
|
|
{
|
|
memset(info, 0, sizeof(*info));
|
|
info->library_name = "TestCore";
|
|
info->library_version = "v1";
|
|
info->need_fullpath = false;
|
|
info->valid_extensions = NULL; // Anything is fine, we don't care.
|
|
}
|
|
|
|
static retro_video_refresh_t video_cb;
|
|
static retro_audio_sample_t audio_cb;
|
|
static retro_audio_sample_batch_t audio_batch_cb;
|
|
static retro_environment_t environ_cb;
|
|
static retro_input_poll_t input_poll_cb;
|
|
static retro_input_state_t input_state_cb;
|
|
|
|
void retro_get_system_av_info(struct retro_system_av_info *info)
|
|
{
|
|
float aspect = 4.0f / 3.0f;
|
|
struct retro_variable var = { .key = "test_aspect" };
|
|
if (environ_cb(RETRO_ENVIRONMENT_GET_VARIABLE, &var) && var.value)
|
|
{
|
|
if (!strcmp(var.value, "4:3"))
|
|
aspect = 4.0f / 3.0f;
|
|
else if (!strcmp(var.value, "16:9"))
|
|
aspect = 16.0f / 9.0f;
|
|
}
|
|
|
|
float sampling_rate = 30000.0f;
|
|
var.key = "test_samplerate";
|
|
if (environ_cb(RETRO_ENVIRONMENT_GET_VARIABLE, &var) && var.value)
|
|
sampling_rate = strtof(var.value, NULL);
|
|
|
|
info->timing = (struct retro_system_timing) {
|
|
.fps = 60.0,
|
|
.sample_rate = sampling_rate,
|
|
};
|
|
|
|
info->geometry = (struct retro_game_geometry) {
|
|
.base_width = 320,
|
|
.base_height = 240,
|
|
.max_width = 320,
|
|
.max_height = 240,
|
|
.aspect_ratio = aspect,
|
|
};
|
|
|
|
last_aspect = aspect;
|
|
last_sample_rate = sampling_rate;
|
|
}
|
|
|
|
static struct retro_rumble_interface rumble;
|
|
|
|
void retro_set_environment(retro_environment_t cb)
|
|
{
|
|
environ_cb = cb;
|
|
|
|
static const struct retro_variable vars[] = {
|
|
{ "test_aspect", "Aspect Ratio; 4:3|16:9" },
|
|
{ "test_samplerate", "Sample Rate; 30000|20000" },
|
|
{ "test_opt0", "Test option #0; false|true" },
|
|
{ "test_opt1", "Test option #1; 0" },
|
|
{ "test_opt2", "Test option #2; 0|1|foo|3" },
|
|
{ NULL, NULL },
|
|
};
|
|
|
|
cb(RETRO_ENVIRONMENT_SET_VARIABLES, (void*)vars);
|
|
|
|
bool no_content = true;
|
|
cb(RETRO_ENVIRONMENT_SET_SUPPORT_NO_GAME, &no_content);
|
|
|
|
if (!cb(RETRO_ENVIRONMENT_GET_LOG_INTERFACE, &logging))
|
|
logging.log = fallback_log;
|
|
|
|
static const struct retro_subsystem_memory_info mem1[] = {{ "ram1", 0x400 }, { "ram2", 0x401 }};
|
|
static const struct retro_subsystem_memory_info mem2[] = {{ "ram3", 0x402 }, { "ram4", 0x403 }};
|
|
|
|
static const struct retro_subsystem_rom_info content[] = {
|
|
{ "Test Rom #1", "bin", false, false, true, mem1, 2, },
|
|
{ "Test Rom #2", "bin", false, false, true, mem2, 2, },
|
|
};
|
|
|
|
static const struct retro_subsystem_info types[] = {
|
|
{ "Foo", "foo", content, 2, 0x200, },
|
|
{ NULL },
|
|
};
|
|
|
|
cb(RETRO_ENVIRONMENT_SET_SUBSYSTEM_INFO, (void*)types);
|
|
|
|
static const struct retro_controller_description controllers[] = {
|
|
{ "Dummy Controller #1", RETRO_DEVICE_SUBCLASS(RETRO_DEVICE_JOYPAD, 0) },
|
|
{ "Dummy Controller #2", RETRO_DEVICE_SUBCLASS(RETRO_DEVICE_JOYPAD, 1) },
|
|
{ "Augmented Joypad", RETRO_DEVICE_JOYPAD }, // Test overriding generic description in UI.
|
|
};
|
|
|
|
static const struct retro_controller_info ports[] = {
|
|
{ controllers, 3 },
|
|
{ NULL, 0 },
|
|
};
|
|
|
|
cb(RETRO_ENVIRONMENT_SET_CONTROLLER_INFO, (void*)ports);
|
|
}
|
|
|
|
void retro_set_audio_sample(retro_audio_sample_t cb)
|
|
{
|
|
audio_cb = cb;
|
|
}
|
|
|
|
void retro_set_audio_sample_batch(retro_audio_sample_batch_t cb)
|
|
{
|
|
audio_batch_cb = cb;
|
|
}
|
|
|
|
void retro_set_input_poll(retro_input_poll_t cb)
|
|
{
|
|
input_poll_cb = cb;
|
|
}
|
|
|
|
void retro_set_input_state(retro_input_state_t cb)
|
|
{
|
|
input_state_cb = cb;
|
|
}
|
|
|
|
void retro_set_video_refresh(retro_video_refresh_t cb)
|
|
{
|
|
video_cb = cb;
|
|
}
|
|
|
|
static unsigned x_coord;
|
|
static unsigned y_coord;
|
|
static unsigned phase;
|
|
static int mouse_rel_x;
|
|
static int mouse_rel_y;
|
|
|
|
void retro_reset(void)
|
|
{
|
|
x_coord = 0;
|
|
y_coord = 0;
|
|
}
|
|
|
|
static void update_input(void)
|
|
{
|
|
int dir_x = 0;
|
|
int dir_y = 0;
|
|
|
|
input_poll_cb();
|
|
if (input_state_cb(0, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_UP))
|
|
dir_y--;
|
|
if (input_state_cb(0, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_DOWN))
|
|
dir_y++;
|
|
if (input_state_cb(0, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_LEFT))
|
|
dir_x--;
|
|
if (input_state_cb(0, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_RIGHT))
|
|
dir_x++;
|
|
|
|
if (input_state_cb(0, RETRO_DEVICE_KEYBOARD, 0, RETROK_RETURN))
|
|
logging.log(RETRO_LOG_INFO, "Return key is pressed!\n");
|
|
|
|
if (input_state_cb(0, RETRO_DEVICE_KEYBOARD, 0, RETROK_x))
|
|
logging.log(RETRO_LOG_INFO, "x key is pressed!\n");
|
|
|
|
int16_t mouse_x = input_state_cb(0, RETRO_DEVICE_MOUSE, 0, RETRO_DEVICE_ID_MOUSE_X);
|
|
int16_t mouse_y = input_state_cb(0, RETRO_DEVICE_MOUSE, 0, RETRO_DEVICE_ID_MOUSE_Y);
|
|
bool mouse_l = input_state_cb(0, RETRO_DEVICE_MOUSE, 0, RETRO_DEVICE_ID_MOUSE_LEFT);
|
|
bool mouse_r = input_state_cb(0, RETRO_DEVICE_MOUSE, 0, RETRO_DEVICE_ID_MOUSE_RIGHT);
|
|
bool mouse_down = input_state_cb(0, RETRO_DEVICE_MOUSE, 0, RETRO_DEVICE_ID_MOUSE_WHEELDOWN);
|
|
bool mouse_up = input_state_cb(0, RETRO_DEVICE_MOUSE, 0, RETRO_DEVICE_ID_MOUSE_WHEELUP);
|
|
bool mouse_middle = input_state_cb(0, RETRO_DEVICE_MOUSE, 0, RETRO_DEVICE_ID_MOUSE_MIDDLE);
|
|
if (mouse_x)
|
|
logging.log(RETRO_LOG_INFO, "Mouse X: %d\n", mouse_x);
|
|
if (mouse_y)
|
|
logging.log(RETRO_LOG_INFO, "Mouse Y: %d\n", mouse_y);
|
|
if (mouse_l)
|
|
logging.log(RETRO_LOG_INFO, "Mouse L pressed.\n");
|
|
if (mouse_r)
|
|
logging.log(RETRO_LOG_INFO, "Mouse R pressed.\n");
|
|
if (mouse_down)
|
|
logging.log(RETRO_LOG_INFO, "Mouse wheeldown pressed.\n");
|
|
if (mouse_up)
|
|
logging.log(RETRO_LOG_INFO, "Mouse wheelup pressed.\n");
|
|
if (mouse_middle)
|
|
logging.log(RETRO_LOG_INFO, "Mouse middle pressed.\n");
|
|
|
|
mouse_rel_x += mouse_x;
|
|
mouse_rel_y += mouse_y;
|
|
if (mouse_rel_x >= 310)
|
|
mouse_rel_x = 309;
|
|
else if (mouse_rel_x < 10)
|
|
mouse_rel_x = 10;
|
|
if (mouse_rel_y >= 230)
|
|
mouse_rel_y = 229;
|
|
else if (mouse_rel_y < 10)
|
|
mouse_rel_y = 10;
|
|
|
|
bool pointer_pressed = input_state_cb(0, RETRO_DEVICE_POINTER, 0, RETRO_DEVICE_ID_POINTER_PRESSED);
|
|
int16_t pointer_x = input_state_cb(0, RETRO_DEVICE_POINTER, 0, RETRO_DEVICE_ID_POINTER_X);
|
|
int16_t pointer_y = input_state_cb(0, RETRO_DEVICE_POINTER, 0, RETRO_DEVICE_ID_POINTER_Y);
|
|
if (pointer_pressed)
|
|
logging.log(RETRO_LOG_INFO, "Pointer: (%6d, %6d).\n", pointer_x, pointer_y);
|
|
|
|
dir_x += input_state_cb(0, RETRO_DEVICE_ANALOG, RETRO_DEVICE_INDEX_ANALOG_LEFT, RETRO_DEVICE_ID_ANALOG_X) / 5000;
|
|
dir_y += input_state_cb(0, RETRO_DEVICE_ANALOG, RETRO_DEVICE_INDEX_ANALOG_LEFT, RETRO_DEVICE_ID_ANALOG_Y) / 5000;
|
|
dir_x += input_state_cb(0, RETRO_DEVICE_ANALOG, RETRO_DEVICE_INDEX_ANALOG_RIGHT, RETRO_DEVICE_ID_ANALOG_X) / 5000;
|
|
dir_y += input_state_cb(0, RETRO_DEVICE_ANALOG, RETRO_DEVICE_INDEX_ANALOG_RIGHT, RETRO_DEVICE_ID_ANALOG_Y) / 5000;
|
|
|
|
x_coord = (x_coord + dir_x) & 31;
|
|
y_coord = (y_coord + dir_y) & 31;
|
|
|
|
if (rumble.set_rumble_state)
|
|
{
|
|
static bool old_start;
|
|
static bool old_select;
|
|
uint16_t strength_strong = input_state_cb(0, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_R2) ? 0x4000 : 0xffff;
|
|
uint16_t strength_weak = input_state_cb(0, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_L2) ? 0x4000 : 0xffff;
|
|
bool start = input_state_cb(0, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_START);
|
|
bool select = input_state_cb(0, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_SELECT);
|
|
if (old_start != start)
|
|
logging.log(RETRO_LOG_INFO, "Strong rumble: %s.\n", start ? "ON": "OFF");
|
|
rumble.set_rumble_state(0, RETRO_RUMBLE_STRONG, start * strength_strong);
|
|
|
|
if (old_select != select)
|
|
logging.log(RETRO_LOG_INFO, "Weak rumble: %s.\n", select ? "ON": "OFF");
|
|
rumble.set_rumble_state(0, RETRO_RUMBLE_WEAK, select * strength_weak);
|
|
|
|
old_start = start;
|
|
old_select = select;
|
|
}
|
|
}
|
|
|
|
static void render_checkered(void)
|
|
{
|
|
uint16_t color_r = 31 << 11;
|
|
uint16_t color_g = 63 << 5;
|
|
|
|
uint16_t *line = frame_buf;
|
|
for (unsigned y = 0; y < 240; y++, line += 320)
|
|
{
|
|
unsigned index_y = ((y - y_coord) >> 4) & 1;
|
|
for (unsigned x = 0; x < 320; x++)
|
|
{
|
|
unsigned index_x = ((x - x_coord) >> 4) & 1;
|
|
line[x] = (index_y ^ index_x) ? color_r : color_g;
|
|
}
|
|
}
|
|
|
|
for (unsigned y = mouse_rel_y - 5; y <= mouse_rel_y + 5; y++)
|
|
for (unsigned x = mouse_rel_x - 5; x <= mouse_rel_x + 5; x++)
|
|
frame_buf[y * 320 + x] = 0x1f;
|
|
|
|
video_cb(frame_buf, 320, 240, 320 << 1);
|
|
}
|
|
|
|
static void check_variables(void)
|
|
{
|
|
struct retro_variable var = {0};
|
|
var.key = "test_opt0";
|
|
if (environ_cb(RETRO_ENVIRONMENT_GET_VARIABLE, &var) && var.value)
|
|
logging.log(RETRO_LOG_INFO, "Key -> Val: %s -> %s.\n", var.key, var.value);
|
|
var.key = "test_opt1";
|
|
if (environ_cb(RETRO_ENVIRONMENT_GET_VARIABLE, &var) && var.value)
|
|
logging.log(RETRO_LOG_INFO, "Key -> Val: %s -> %s.\n", var.key, var.value);
|
|
var.key = "test_opt2";
|
|
if (environ_cb(RETRO_ENVIRONMENT_GET_VARIABLE, &var) && var.value)
|
|
logging.log(RETRO_LOG_INFO, "Key -> Val: %s -> %s.\n", var.key, var.value);
|
|
|
|
float last = last_aspect;
|
|
float last_rate = last_sample_rate;
|
|
struct retro_system_av_info info;
|
|
retro_get_system_av_info(&info);
|
|
|
|
if ((last != last_aspect && last != 0.0f) || (last_rate != last_sample_rate && last_rate != 0.0f))
|
|
{
|
|
// SET_SYSTEM_AV_INFO can only be called within retro_run().
|
|
// check_variables() is called once in retro_load_game(), but the checks
|
|
// on last and last_rate ensures this path is never hit that early.
|
|
// last_aspect and last_sample_rate are not updated until retro_get_system_av_info(),
|
|
// which must come after retro_load_game().
|
|
bool ret;
|
|
if (last_rate != last_sample_rate && last_rate != 0.0f) // If audio rate changes, go through SET_SYSTEM_AV_INFO.
|
|
ret = environ_cb(RETRO_ENVIRONMENT_SET_SYSTEM_AV_INFO, &info);
|
|
else // If only aspect changed, take the simpler path.
|
|
ret = environ_cb(RETRO_ENVIRONMENT_SET_GEOMETRY, &info.geometry);
|
|
logging.log(RETRO_LOG_INFO, "SET_SYSTEM_AV_INFO/SET_GEOMETRY = %u.\n", ret);
|
|
}
|
|
}
|
|
|
|
static void audio_callback(void)
|
|
{
|
|
for (unsigned i = 0; i < 30000 / 60; i++, phase++)
|
|
{
|
|
int16_t val = 0x800 * sinf(2.0f * M_PI * phase * 300.0f / 30000.0f);
|
|
audio_cb(val, val);
|
|
}
|
|
|
|
phase %= 100;
|
|
}
|
|
|
|
static void audio_set_state(bool enable)
|
|
{
|
|
(void)enable;
|
|
}
|
|
|
|
void retro_run(void)
|
|
{
|
|
update_input();
|
|
render_checkered();
|
|
if (!use_audio_cb)
|
|
audio_callback();
|
|
|
|
bool updated = false;
|
|
if (environ_cb(RETRO_ENVIRONMENT_GET_VARIABLE_UPDATE, &updated) && updated)
|
|
check_variables();
|
|
}
|
|
|
|
static void keyboard_cb(bool down, unsigned keycode,
|
|
uint32_t character, uint16_t mod)
|
|
{
|
|
logging.log(RETRO_LOG_INFO, "Down: %s, Code: %d, Char: %u, Mod: %u.\n",
|
|
down ? "yes" : "no", keycode, character, mod);
|
|
}
|
|
|
|
|
|
bool retro_load_game(const struct retro_game_info *info)
|
|
{
|
|
struct retro_input_descriptor desc[] = {
|
|
{ 0, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_LEFT, "Left" },
|
|
{ 0, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_UP, "Up" },
|
|
{ 0, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_DOWN, "Down" },
|
|
{ 0, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_RIGHT, "Right" },
|
|
{ 0 },
|
|
};
|
|
|
|
environ_cb(RETRO_ENVIRONMENT_SET_INPUT_DESCRIPTORS, desc);
|
|
|
|
enum retro_pixel_format fmt = RETRO_PIXEL_FORMAT_RGB565;
|
|
if (!environ_cb(RETRO_ENVIRONMENT_SET_PIXEL_FORMAT, &fmt))
|
|
{
|
|
logging.log(RETRO_LOG_INFO, "RGB565 is not supported.\n");
|
|
return false;
|
|
}
|
|
|
|
struct retro_keyboard_callback cb = { keyboard_cb };
|
|
environ_cb(RETRO_ENVIRONMENT_SET_KEYBOARD_CALLBACK, &cb);
|
|
if (environ_cb(RETRO_ENVIRONMENT_GET_RUMBLE_INTERFACE, &rumble))
|
|
logging.log(RETRO_LOG_INFO, "Rumble environment supported.\n");
|
|
else
|
|
logging.log(RETRO_LOG_INFO, "Rumble environment not supported.\n");
|
|
|
|
struct retro_audio_callback audio_cb = { audio_callback, audio_set_state };
|
|
use_audio_cb = environ_cb(RETRO_ENVIRONMENT_SET_AUDIO_CALLBACK, &audio_cb);
|
|
|
|
check_variables();
|
|
|
|
(void)info;
|
|
return true;
|
|
}
|
|
|
|
void retro_unload_game(void)
|
|
{
|
|
last_aspect = 0.0f;
|
|
last_sample_rate = 0.0f;
|
|
}
|
|
|
|
unsigned retro_get_region(void)
|
|
{
|
|
return RETRO_REGION_NTSC;
|
|
}
|
|
|
|
bool retro_load_game_special(unsigned type, const struct retro_game_info *info, size_t num)
|
|
{
|
|
if (type != 0x200)
|
|
return false;
|
|
if (num != 2)
|
|
return false;
|
|
return retro_load_game(NULL);
|
|
}
|
|
|
|
size_t retro_serialize_size(void)
|
|
{
|
|
return 2;
|
|
}
|
|
|
|
bool retro_serialize(void *data_, size_t size)
|
|
{
|
|
if (size < 2)
|
|
return false;
|
|
|
|
uint8_t *data = data_;
|
|
data[0] = x_coord;
|
|
data[1] = y_coord;
|
|
return true;
|
|
}
|
|
|
|
bool retro_unserialize(const void *data_, size_t size)
|
|
{
|
|
if (size < 2)
|
|
return false;
|
|
|
|
const uint8_t *data = data_;
|
|
x_coord = data[0] & 31;
|
|
y_coord = data[1] & 31;
|
|
return true;
|
|
}
|
|
|
|
void *retro_get_memory_data(unsigned id)
|
|
{
|
|
(void)id;
|
|
return NULL;
|
|
}
|
|
|
|
size_t retro_get_memory_size(unsigned id)
|
|
{
|
|
(void)id;
|
|
return 0;
|
|
}
|
|
|
|
void retro_cheat_reset(void)
|
|
{}
|
|
|
|
void retro_cheat_set(unsigned index, bool enabled, const char *code)
|
|
{
|
|
(void)index;
|
|
(void)enabled;
|
|
(void)code;
|
|
}
|
|
|