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rt-thread-official/bsp/simulator/drivers/sdl_fb.c

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/*
* Copyright (c) 2006-2021, RT-Thread Development Team
*
* SPDX-License-Identifier: Apache-2.0
*
* Change Logs:
* Date Author Notes
*/
#include <rtthread.h>
#include <stdio.h>
#ifdef _WIN32
#include <sdl.h>
#else
#include <SDL2/SDL.h>
#endif
#include <rtdevice.h>
#include <rtgui/driver.h>
#define DBG_TAG "sdl.fb"
#define DBG_LVL DBG_WARNING
#include <rtdbg.h>
#define SDL_SCREEN_WIDTH 480
#define SDL_SCREEN_HEIGHT 320
extern void rt_hw_exit(void);
#define SDL_SCREEN_FORMAT SDL_PIXELFORMAT_RGB565
struct sdlfb_device
{
struct rt_device parent;
SDL_Renderer *renderer; /* window renderer */
SDL_Surface *surface; /* screen surface */
rt_uint16_t width;
rt_uint16_t height;
};
struct sdlfb_device _device;
/* common device interface */
static rt_err_t sdlfb_init(rt_device_t dev)
{
return RT_EOK;
}
static rt_err_t sdlfb_open(rt_device_t dev, rt_uint16_t oflag)
{
return RT_EOK;
}
static rt_err_t sdlfb_close(rt_device_t dev)
{
SDL_Quit();
return RT_EOK;
}
int sdlfb_info(int *format, int *bpp)
{
int bit_pp; /* texture bits per pixel */
Uint32 Rmask, Gmask, Bmask, Amask; /* masks for pixel format passed into OpenGL */
/* Grab info about format that will be passed into OpenGL */
SDL_PixelFormatEnumToMasks(SDL_SCREEN_FORMAT, &bit_pp, &Rmask, &Gmask,
&Bmask, &Amask);
*bpp = bit_pp;
switch (SDL_SCREEN_FORMAT)
{
case SDL_PIXELFORMAT_RGB565:
*format = RTGRAPHIC_PIXEL_FORMAT_RGB565;
break;
case SDL_PIXELFORMAT_RGB888:
*format = RTGRAPHIC_PIXEL_FORMAT_RGB888;
break;
case SDL_PIXELFORMAT_ARGB8888:
*format = RTGRAPHIC_PIXEL_FORMAT_ARGB888;
break;
case SDL_PIXELFORMAT_ABGR8888:
*format = RTGRAPHIC_PIXEL_FORMAT_ABGR888;
}
return 0;
}
static rt_mutex_t sdllock;
static rt_err_t sdlfb_control(rt_device_t dev, int cmd, void *args)
{
struct sdlfb_device *device;
rt_mutex_take(sdllock, RT_WAITING_FOREVER);
device = (struct sdlfb_device *)dev;
RT_ASSERT(device != RT_NULL);
switch (cmd)
{
case RTGRAPHIC_CTRL_GET_INFO:
{
int format, bpp;
struct rt_device_graphic_info *info;
sdlfb_info(&format, &bpp);
info = (struct rt_device_graphic_info *) args;
info->bits_per_pixel = bpp;
info->pixel_format = format;
info->framebuffer = (rt_uint8_t*)device->surface->pixels;
info->width = device->width;
info->height = device->height;
}
break;
case RTGRAPHIC_CTRL_RECT_UPDATE:
{
SDL_Texture * texture;
struct rt_device_rect_info *rect;
SDL_Rect _rect = { 0, 0, SDL_SCREEN_WIDTH, SDL_SCREEN_HEIGHT };
rect = (struct rt_device_rect_info *)args;
SDL_RenderClear(_device.renderer);
texture = SDL_CreateTextureFromSurface(_device.renderer, _device.surface);
SDL_SetTextureBlendMode(texture, SDL_BLENDMODE_BLEND);
SDL_RenderCopy(_device.renderer, texture, NULL, &_rect);
SDL_RenderPresent(_device.renderer);
SDL_DestroyTexture(texture);
}
break;
case RTGRAPHIC_CTRL_SET_MODE:
{
break;
}
break;
}
rt_mutex_release(sdllock);
return RT_EOK;
}
Uint16 pixels[16 * 16] = { // ...or with raw pixel data:
0x0fff, 0x0fff, 0x0fff, 0x0fff, 0x0fff, 0x0fff, 0x0fff, 0x0fff,
0x0fff, 0x0fff, 0x0fff, 0x0fff, 0x0fff, 0x0fff, 0x0fff, 0x0fff,
0x0fff, 0x0fff, 0x0fff, 0x0fff, 0x0fff, 0x0fff, 0x0fff, 0x0fff,
0x0fff, 0x0fff, 0x0fff, 0x0fff, 0x0fff, 0x0fff, 0x0fff, 0x0fff,
0x0fff, 0x0fff, 0x0fff, 0x0fff, 0x0fff, 0x0fff, 0x0fff, 0x0fff,
0x0fff, 0x0fff, 0x0fff, 0x0fff, 0x0fff, 0x0fff, 0x0fff, 0x0fff,
0x0fff, 0x0aab, 0x0789, 0x0bcc, 0x0eee, 0x09aa, 0x099a, 0x0ddd,
0x0fff, 0x0eee, 0x0899, 0x0fff, 0x0fff, 0x1fff, 0x0dde, 0x0dee,
0x0fff, 0xabbc, 0xf779, 0x8cdd, 0x3fff, 0x9bbc, 0xaaab, 0x6fff,
0x0fff, 0x3fff, 0xbaab, 0x0fff, 0x0fff, 0x6689, 0x6fff, 0x0dee,
0xe678, 0xf134, 0x8abb, 0xf235, 0xf678, 0xf013, 0xf568, 0xf001,
0xd889, 0x7abc, 0xf001, 0x0fff, 0x0fff, 0x0bcc, 0x9124, 0x5fff,
0xf124, 0xf356, 0x3eee, 0x0fff, 0x7bbc, 0xf124, 0x0789, 0x2fff,
0xf002, 0xd789, 0xf024, 0x0fff, 0x0fff, 0x0002, 0x0134, 0xd79a,
0x1fff, 0xf023, 0xf000, 0xf124, 0xc99a, 0xf024, 0x0567, 0x0fff,
0xf002, 0xe678, 0xf013, 0x0fff, 0x0ddd, 0x0fff, 0x0fff, 0xb689,
0x8abb, 0x0fff, 0x0fff, 0xf001, 0xf235, 0xf013, 0x0fff, 0xd789,
0xf002, 0x9899, 0xf001, 0x0fff, 0x0fff, 0x0fff, 0x0fff, 0xe789,
0xf023, 0xf000, 0xf001, 0xe456, 0x8bcc, 0xf013, 0xf002, 0xf012,
0x1767, 0x5aaa, 0xf013, 0xf001, 0xf000, 0x0fff, 0x7fff, 0xf124,
0x0fff, 0x089a, 0x0578, 0x0fff, 0x089a, 0x0013, 0x0245, 0x0eff,
0x0223, 0x0dde, 0x0135, 0x0789, 0x0ddd, 0xbbbc, 0xf346, 0x0467,
0x0fff, 0x4eee, 0x3ddd, 0x0edd, 0x0dee, 0x0fff, 0x0fff, 0x0dee,
0x0def, 0x08ab, 0x0fff, 0x7fff, 0xfabc, 0xf356, 0x0457, 0x0467,
0x0fff, 0x0bcd, 0x4bde, 0x9bcc, 0x8dee, 0x8eff, 0x8fff, 0x9fff,
0xadee, 0xeccd, 0xf689, 0xc357, 0x2356, 0x0356, 0x0467, 0x0467,
0x0fff, 0x0ccd, 0x0bdd, 0x0cdd, 0x0aaa, 0x2234, 0x4135, 0x4346,
0x5356, 0x2246, 0x0346, 0x0356, 0x0467, 0x0356, 0x0467, 0x0467,
0x0fff, 0x0fff, 0x0fff, 0x0fff, 0x0fff, 0x0fff, 0x0fff, 0x0fff,
0x0fff, 0x0fff, 0x0fff, 0x0fff, 0x0fff, 0x0fff, 0x0fff, 0x0fff,
0x0fff, 0x0fff, 0x0fff, 0x0fff, 0x0fff, 0x0fff, 0x0fff, 0x0fff,
0x0fff, 0x0fff, 0x0fff, 0x0fff, 0x0fff, 0x0fff, 0x0fff, 0x0fff
};
static void sdlfb_hw_init(void)
{
SDL_Window *win;
if (SDL_Init(SDL_INIT_VIDEO | SDL_INIT_AUDIO) < 0)
{
fprintf(stderr, "Couldn't initialize SDL: %s\n", SDL_GetError());
exit(1);
}
_device.parent.init = sdlfb_init;
_device.parent.open = sdlfb_open;
_device.parent.close = sdlfb_close;
_device.parent.read = RT_NULL;
_device.parent.write = RT_NULL;
_device.parent.control = sdlfb_control;
_device.width = SDL_SCREEN_WIDTH;
_device.height = SDL_SCREEN_HEIGHT;
{
int bpp; /* texture bits per pixel */
Uint32 Rmask, Gmask, Bmask, Amask; /* masks for pixel format passed into OpenGL */
/* Grab info about format that will be passed into OpenGL */
SDL_PixelFormatEnumToMasks(SDL_SCREEN_FORMAT, &bpp, &Rmask, &Gmask,
&Bmask, &Amask);
_device.surface = SDL_CreateRGBSurface(0, SDL_SCREEN_WIDTH, SDL_SCREEN_HEIGHT,
bpp, Rmask, Gmask, Bmask, Amask);
}
win = SDL_CreateWindow("RT-Thread/Persimmon",
SDL_WINDOWPOS_UNDEFINED, SDL_WINDOWPOS_UNDEFINED,
SDL_SCREEN_WIDTH, SDL_SCREEN_HEIGHT, SDL_WINDOW_OPENGL);
if (win == NULL)
{
fprintf(stderr, "Couldn't set video mode: %s\n", SDL_GetError());
exit(1);
}
/* set the icon of Window */
{
SDL_Surface *surface;
surface = SDL_CreateRGBSurfaceFrom(pixels, 16, 16, 16, 16 * 2, 0x0f00, 0x00f0, 0x000f, 0xf000);
SDL_SetWindowIcon(win, surface);
}
_device.renderer = SDL_CreateRenderer(win, -1, SDL_RENDERER_ACCELERATED);
rt_device_register(RT_DEVICE(&_device), "sdl", RT_DEVICE_FLAG_RDWR);
sdllock = rt_mutex_create("fb", RT_IPC_FLAG_PRIO);
if (sdllock == RT_NULL)
{
LOG_E("Create mutex for sdlfb failed!");
}
}
#ifdef _WIN32
#include <windows.h>
#include <mmsystem.h>
#else
#include <pthread.h>
#include <signal.h>
#endif
#include <stdio.h>
#include <rtgui/event.h>
#include <rtgui/kbddef.h>
#include <rtgui/rtgui_server.h>
#include <rtgui/rtgui_system.h>
#ifdef _WIN32
static HANDLE sdl_ok_event = NULL;
static DWORD WINAPI sdl_loop(LPVOID lpParam)
#else
static pthread_mutex_t sdl_ok_mutex;
static pthread_cond_t sdl_ok_event;
static void *sdl_loop(void *lpParam)
#endif
{
int quit = 0;
SDL_Event event;
int state = 0;
rt_device_t device;
int timeout = 1000000;
int last_x = -1, last_y = -1;
int motion_x, motion_y;
int motion_button = 0;
int motion_tick = 50;
int mouse_id = 1;
#ifndef _WIN32
sigset_t sigmask, oldmask;
/* set the getchar without buffer */
sigfillset(&sigmask);
pthread_sigmask(SIG_BLOCK, &sigmask, &oldmask);
pthread_mutex_lock(&sdl_ok_mutex);
#endif
sdlfb_hw_init();
device = rt_device_find("sdl");
RT_ASSERT(device);
rtgui_graphic_set_device(device);
#ifdef _WIN32
SetEvent(sdl_ok_event);
#else
pthread_cond_signal(&sdl_ok_event);
pthread_mutex_unlock(&sdl_ok_mutex);
#endif
/* handle SDL event */
while (!quit)
{
if (motion_button & RTGUI_MOUSE_BUTTON_DOWN)
{
timeout = motion_tick - SDL_GetTicks();
}
else
{
timeout = 1000 * 1000;
}
int tick = SDL_GetTicks();
SDL_WaitEventTimeout(&event, timeout);
if (SDL_GetTicks() >= motion_tick && (motion_button & RTGUI_MOUSE_BUTTON_DOWN)) /* whether timeout */
{
/* sendout motion event */
struct rtgui_event_mouse emouse;
emouse.parent.type = RTGUI_EVENT_MOUSE_MOTION;
emouse.parent.sender = RT_NULL;
emouse.wid = RT_NULL;
emouse.id = mouse_id;
emouse.ts = rt_tick_get();
if ((motion_x > 0 && motion_x < SDL_SCREEN_WIDTH) &&
(motion_y > 0 && motion_y < SDL_SCREEN_HEIGHT))
{
emouse.x = motion_x;
emouse.y = motion_y;
/* init mouse button */
emouse.button = motion_button;
/* send event to server */
rtgui_server_post_event(&emouse.parent, sizeof(struct rtgui_event_mouse));
}
/* reset motion tick */
motion_tick = 50 + SDL_GetTicks();
}
switch (event.type)
{
case SDL_MOUSEMOTION:
{
/* save to (x,y) in the motion */
motion_x = ((SDL_MouseMotionEvent *)&event)->x;
motion_y = ((SDL_MouseMotionEvent *)&event)->y;
}
break;
case SDL_MOUSEBUTTONDOWN:
case SDL_MOUSEBUTTONUP:
{
int x, y;
struct rtgui_event_mouse emouse;
SDL_MouseButtonEvent *mb;
emouse.parent.type = RTGUI_EVENT_MOUSE_BUTTON;
emouse.parent.sender = RT_NULL;
emouse.wid = RT_NULL;
if (event.type == SDL_MOUSEBUTTONDOWN && state == 0)
mouse_id = rt_tick_get();
emouse.id = mouse_id;
emouse.ts = rt_tick_get();
mb = (SDL_MouseButtonEvent *)&event;
x = mb->x;
y = mb->y;
if ((x > 0 && x < SDL_SCREEN_WIDTH) &&
(y > 0 && y < SDL_SCREEN_HEIGHT))
{
emouse.x = x;
emouse.y = y;
/* init mouse button */
emouse.button = 0;
/* set emouse button */
if (mb->button & (1 << (SDL_BUTTON_LEFT - 1)))
{
emouse.button |= RTGUI_MOUSE_BUTTON_LEFT;
}
else if (mb->button & (1 << (SDL_BUTTON_RIGHT - 1)))
{
emouse.button |= RTGUI_MOUSE_BUTTON_RIGHT;
}
else if (mb->button & (1 << (SDL_BUTTON_MIDDLE - 1)))
{
emouse.button |= RTGUI_MOUSE_BUTTON_MIDDLE;
}
if (mb->type == SDL_MOUSEBUTTONDOWN)
{
emouse.button |= RTGUI_MOUSE_BUTTON_DOWN;
motion_button = emouse.button;
/* set motion timeout tick */
motion_tick = 50 + SDL_GetTicks();
if (state == 0)
{
/* send event to server */
rtgui_server_post_event(&emouse.parent, sizeof(struct rtgui_event_mouse));
last_x = -1; last_y = -1;
state = 1;
}
}
else
{
emouse.button |= RTGUI_MOUSE_BUTTON_UP;
motion_button = 0;
if (state == 1)
{
/* send event to server */
rtgui_server_post_event(&emouse.parent, sizeof(struct rtgui_event_mouse));
last_x = -1; last_y = -1;
state = 0;
}
}
}
}
break;
case SDL_KEYUP:
{
struct rtgui_event_kbd ekbd;
ekbd.parent.type = RTGUI_EVENT_KBD;
ekbd.parent.sender = RT_NULL;
ekbd.type = RTGUI_KEYUP;
ekbd.wid = RT_NULL;
ekbd.mod = event.key.keysym.mod;
ekbd.key = event.key.keysym.sym;
/* FIXME: unicode */
ekbd.unicode = 0;
/* send event to server */
rtgui_server_post_event(&ekbd.parent, sizeof(struct rtgui_event_kbd));
}
break;
case SDL_KEYDOWN:
{
struct rtgui_event_kbd ekbd;
ekbd.parent.type = RTGUI_EVENT_KBD;
ekbd.parent.sender = RT_NULL;
ekbd.type = RTGUI_KEYDOWN;
ekbd.wid = RT_NULL;
ekbd.mod = event.key.keysym.mod;
ekbd.key = event.key.keysym.sym;
/* FIXME: unicode */
ekbd.unicode = 0;
/* send event to server */
rtgui_server_post_event(&ekbd.parent, sizeof(struct rtgui_event_kbd));
}
break;
case SDL_QUIT:
SDL_Quit();
quit = 1;
break;
default:
break;
}
if (quit)
{
exit(1);
break;
}
}
rt_hw_exit();
return 0;
}
/* start sdl thread */
void rt_hw_sdl_start(void)
{
#ifdef _WIN32
HANDLE thread;
DWORD thread_id;
sdl_ok_event = CreateEvent(NULL,
FALSE,
FALSE,
NULL);
if (sdl_ok_event == NULL)
{
printf("error, create SDL event failed\n");
exit(-1);
}
/* create thread that loop sdl event */
thread = CreateThread(NULL,
0,
(LPTHREAD_START_ROUTINE)sdl_loop,
0,
CREATE_SUSPENDED,
&thread_id);
if (thread == NULL)
{
//Display Error Message
return;
}
ResumeThread(thread);
/* wait until SDL LCD device is registered and seted */
WaitForSingleObject(sdl_ok_event, INFINITE);
#else
/* Linux */
pthread_t pid;
int res;
pthread_mutex_init(&sdl_ok_mutex, NULL);
pthread_cond_init(&sdl_ok_event, NULL);
res = pthread_create(&pid, NULL, &sdl_loop, NULL);
if (res)
{
printf("pthread create sdl thread faild, <%d>\n", res);
exit(EXIT_FAILURE);
}
pthread_mutex_lock(&sdl_ok_mutex);
pthread_cond_wait(&sdl_ok_event, &sdl_ok_mutex);
pthread_mutex_unlock(&sdl_ok_mutex);
pthread_mutex_destroy(&sdl_ok_mutex);
pthread_cond_destroy(&sdl_ok_event);
#endif
}
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