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Remove NST bits from this repo

This commit is contained in:
Bad Diode 2022-10-13 18:08:53 +02:00
parent abaeae55f1
commit 3f90241e3b
3 changed files with 49 additions and 107 deletions
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4
Makefile
View File

@ -12,8 +12,8 @@ KBD_PATH ?= /dev/input/event1
MOUSE_PATH ?= /dev/input/mice
C_DEFINES := -DKBD_PATH=\"$(KBD_PATH)\" -DMOUSE_PATH=\"$(MOUSE_PATH)\"
CC := ../ndk/bin/arm-linux-androideabi-gcc
CFLAGS := -Wall -Wextra -std=c99
CC ?= cc
CFLAGS := -Wall -Wextra -static
REL_FLAGS := -DNDEBUG -O2
DEB_FLAGS := -DDEBUG -O0 -g

60
src/main.c
View File

@ -60,7 +60,6 @@ typedef struct Mouse {
typedef struct Input {
int kbd_fd;
int mouse_fd;
int home_fd;
char map[KEY_MAX / 8 + 1];
u8 controller;
Mouse mouse;
@ -77,22 +76,14 @@ init_input(void) {
in.kbd_fd = -1;
in.mouse_fd = -1;
// in.kbd_fd = open(KBD_PATH, O_RDONLY | O_NONBLOCK);
in.kbd_fd = open("/dev/input/event0", O_RDONLY | O_NONBLOCK);
in.kbd_fd = open(KBD_PATH, O_RDONLY | O_NONBLOCK);
if (in.kbd_fd == -1) {
// NOTE: Some applications may not require a keyboard so this is
// optional, but we are still displaying an error.
fprintf(stderr, "error: couldn't open keyboard %s: %s.\n", KBD_PATH, strerror(errno));
}
// NOTE: nook home and power buttons event handler.
in.home_fd = open("/dev/input/event1", O_RDONLY | O_NONBLOCK);
if (in.home_fd == -1) {
fprintf(stderr, "error: couldn't open home buttons %s: %s.\n", "/dev/input/event1", strerror(errno));
}
// in.mouse_fd = open(MOUSE_PATH, O_RDONLY | O_NONBLOCK);
in.mouse_fd = open("/dev/input/event2", O_RDONLY | O_NONBLOCK);
in.mouse_fd = open(MOUSE_PATH, O_RDONLY | O_NONBLOCK);
if (in.mouse_fd == -1) {
// NOTE: Some applications may not require a mouse so this is
// optional, but we are still displaying an error.
@ -127,16 +118,16 @@ poll_mouse(void) {
if (mouse_event.type == EV_REL) {
if (mouse_event.code == REL_X) {
in.mouse.x = CLAMP(
in.mouse.x / zoom + (s32)mouse_event.value, 0, (s32)screen_width);
in.mouse.x / (s32)zoom + (s32)mouse_event.value, 0, (s32)screen_width);
} else if (mouse_event.code == REL_Y) {
in.mouse.y = CLAMP(
in.mouse.y / zoom + (s32)mouse_event.value, 0, (s32)screen_height);
in.mouse.y / (s32)zoom + (s32)mouse_event.value, 0, (s32)screen_height);
}
} else if (mouse_event.type == EV_ABS) {
if (mouse_event.code == ABS_X) {
in.mouse.x = CLAMP((s32)mouse_event.value / zoom, 0, (s32)screen_width);
in.mouse.x = CLAMP((s32)mouse_event.value / (s32)zoom, 0, (s32)screen_width);
} else if (mouse_event.code == ABS_Y) {
in.mouse.y = CLAMP((s32)mouse_event.value / zoom, 0, (s32)screen_height);
in.mouse.y = CLAMP((s32)mouse_event.value / (s32)zoom, 0, (s32)screen_height);
}
} else if (mouse_event.type == EV_KEY) {
switch (mouse_event.code) {
@ -154,39 +145,17 @@ poll_mouse(void) {
in.mouse.buttons &= ~0x10;
}
} break;
default: {
// NOTE: nook press.
if (mouse_event.value == 1) {
in.mouse.buttons |= 0x01;
} else {
in.mouse.buttons &= ~0x01;
}
} break;
default: break;
}
}
in.mouse.update = true;
}
}
void
poll_home(void) {
if (in.home_fd == -1) {
return;
}
struct input_event event;
if (read(in.home_fd, &event, sizeof(event)) != -1) {
if (event.code == 102 && event.value == 1) {
exit(EXIT_SUCCESS);
}
}
}
void
poll_input(void) {
poll_keyboard();
poll_mouse();
poll_home();
}
void
@ -317,15 +286,6 @@ handle_keyboard(void) {
default: break;
}
// NOTE: Nook overrides.
switch (key_code) {
case 156: { rune = 0x10; } break; // top left
case 139: { rune = 0x20; } break; // bottom left
case 151: { rune = 0x40; } break; // top right
case 158: { rune = 0x80; } break; // bottom right
default: break;
}
if (rune) {
controller_now |= rune;
continue;
@ -567,8 +527,6 @@ main(int argc, char *argv[]) {
// Main loop.
Time frame_time = time_now();
size_t frames_update = 0;
size_t frames_refresh = 0;
while (true) {
poll_input();
size_t elapsed = time_elapsed(frame_time);
@ -580,10 +538,6 @@ main(int argc, char *argv[]) {
// Blit ppu.pixels to the framebuffer.
blit_framebuffer();
if (++frames_update > frames_per_update) {
write(fb_file, "0", 0);
frames_update = 0;
}
frame_time = time_now();
}
}

92
src/ppu.c
View File

@ -4,7 +4,7 @@
#include <linux/fb.h>
#include <sys/ioctl.h>
// #include <sys/kd.h>
#include <sys/kd.h>
#include <sys/mman.h>
#include "ppu.h"
@ -23,16 +23,12 @@
*/
// Parameters.
static int zoom = 2;
static int frames_per_update = 5;
static int blits_per_refresh = 60 * 5;
static size_t zoom = 4;
static size_t screen_width = 0;
static size_t screen_height = 0;
static size_t bpp = 0;
static int fb_file = 0;
static int refresh_file = 0;
static frames_refresh = 0;
static u8 *framebuffer = 0;
@ -121,51 +117,45 @@ set_tty(bool graphics) {
fprintf(stderr,"error: couldn't open tty\n");
exit(EXIT_FAILURE);
}
// if (graphics) {
// if (ioctl(tty, KDSETMODE, KD_GRAPHICS)) {
// fprintf(stderr,"error: setting graphics mode failed\n");
// exit(EXIT_FAILURE);
// }
// struct termios t;
// if (tcgetattr(STDIN_FILENO, &t)) {
// fprintf(stderr, "error: couldn't disable terminal echo\n");
// exit(EXIT_FAILURE);
// }
// prev_t = t;
// t.c_lflag &= ~((tcflag_t) ECHO);
// if (tcsetattr(STDIN_FILENO, TCSANOW, &t)) {
// fprintf(stderr, "error: couldn't disable terminal echo\n");
// exit(EXIT_FAILURE);
// }
// } else {
// if (ioctl(tty, KDSETMODE, KD_TEXT)) {
// fprintf(stderr,"error: setting text mode failed\n");
// exit(EXIT_FAILURE);
// }
// if (tcsetattr(STDIN_FILENO, TCSANOW, &prev_t)) {
// fprintf(stderr, "error: couldn't restore terminal attributes\n");
// exit(EXIT_FAILURE);
// }
// }
if (graphics) {
if (ioctl(tty, KDSETMODE, KD_GRAPHICS)) {
fprintf(stderr,"error: setting graphics mode failed\n");
exit(EXIT_FAILURE);
}
struct termios t;
if (tcgetattr(STDIN_FILENO, &t)) {
fprintf(stderr, "error: couldn't disable terminal echo\n");
exit(EXIT_FAILURE);
}
prev_t = t;
t.c_lflag &= ~((tcflag_t) ECHO);
if (tcsetattr(STDIN_FILENO, TCSANOW, &t)) {
fprintf(stderr, "error: couldn't disable terminal echo\n");
exit(EXIT_FAILURE);
}
} else {
if (ioctl(tty, KDSETMODE, KD_TEXT)) {
fprintf(stderr,"error: setting text mode failed\n");
exit(EXIT_FAILURE);
}
if (tcsetattr(STDIN_FILENO, TCSANOW, &prev_t)) {
fprintf(stderr, "error: couldn't restore terminal attributes\n");
exit(EXIT_FAILURE);
}
}
close(tty);
}
int
ppu_init(void) {
// Open frambuffer and get the size.
fb_file = open("/dev/graphics/fb0", O_RDWR);
// TODO: Pass as macro or input parameter
fb_file = open("/dev/fb0", O_RDWR);
if (fb_file <= 0) {
fprintf(stderr, "error: couldn't open the framebuffer\n");
exit(EXIT_FAILURE);
}
refresh_file = open("/sys/class/graphics/fb0/epd_refresh", O_RDWR);
if (refresh_file == 0) {
fprintf(stderr, "error: couldn't open the refresh file\n");
exit(EXIT_FAILURE);
}
struct fb_var_screeninfo info;
if (ioctl(fb_file, FBIOGET_VSCREENINFO, &info) != 0) {
fprintf(stderr, "error: couldn't get the framebuffer size\n");
@ -195,7 +185,7 @@ ppu_init(void) {
}
// Prepare TTY for graphics mode.
// set_tty(true);
set_tty(true);
// Initialize default palette.
palette[0] = 0x444444;
@ -210,11 +200,11 @@ ppu_init(void) {
// Clear framebuffer.
memset(framebuffer, 0xFF, len);
write(refresh_file, "1", 1);
// Make sure we perform an initial screen drawing.
reqdraw = 1;
redraw_screen();
close(fb_file);
return 1;
}
@ -231,7 +221,7 @@ blit_framebuffer(void) {
for (size_t i = 0; i < screen_width; i++) {
size_t idx = i + j * screen_width;
if (bpp == 16) {
u16 *p = framebuffer;
u16 *p = (u16*)framebuffer;
for (size_t zz = 0; zz < zoom; zz++) {
size_t fb_idx = (i * zoom + j * screen_width * zoom * zoom + zz * screen_width * zoom);
for (size_t z = 0; z < zoom; z++) {
@ -239,8 +229,13 @@ blit_framebuffer(void) {
}
}
} else if (bpp == 32) {
u32 *p = framebuffer;
p[idx] = palette[pixels_fg[idx] << 2 | pixels_bg[idx]];
u32 *p = (u32*)framebuffer;
for (size_t zz = 0; zz < zoom; zz++) {
size_t fb_idx = (i * zoom + j * screen_width * zoom * zoom + zz * screen_width * zoom);
for (size_t z = 0; z < zoom; z++) {
p[fb_idx + z] = palette[pixels_fg[idx] << 2 | pixels_bg[idx]];
}
}
} else {
fprintf(stderr, "error: wrong bits per pixel (expected 16 or 32)\n");
exit(EXIT_FAILURE);
@ -249,12 +244,5 @@ blit_framebuffer(void) {
}
dirty_lines[j] = 0;
}
// NOTE: Maybe this should happen on blit_framebuffer depending on
// the number of actual updates (uxn applications that don't modify
// the framebuffer shouldn't have to blink).
if (++frames_refresh > blits_per_refresh) {
write(refresh_file, "1", 1);
frames_refresh = 0;
}
reqdraw = 0;
}