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

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#include <rtthread.h>
#ifdef _WIN32
#include <sdl.h>
#else
#include <SDL/SDL.h>
#endif
#include <rtdevice.h>
#include <rtgui/driver.h>
#define SDL_SCREEN_WIDTH 800
#define SDL_SCREEN_HEIGHT 480
struct sdlfb_device
{
struct rt_device parent;
SDL_Surface *screen;
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;
}
static rt_mutex_t sdllock;
static rt_err_t sdlfb_control(rt_device_t dev, rt_uint8_t cmd, void *args)
{
struct sdlfb_device *device;
rt_mutex_take(sdllock, RT_WAITING_FOREVER);
device = (struct sdlfb_device *)dev;
RT_ASSERT(device != RT_NULL);
RT_ASSERT(device->screen != RT_NULL);
switch (cmd)
{
case RTGRAPHIC_CTRL_GET_INFO:
{
struct rt_device_graphic_info *info;
info = (struct rt_device_graphic_info *) args;
info->bits_per_pixel = 16;
info->pixel_format = RTGRAPHIC_PIXEL_FORMAT_RGB565P;
info->framebuffer = device->screen->pixels;
info->width = device->screen->w;
info->height = device->screen->h;
}
break;
case RTGRAPHIC_CTRL_RECT_UPDATE:
{
struct rt_device_rect_info *rect;
rect = (struct rt_device_rect_info *)args;
/* SDL_UpdateRect(_device.screen, rect->x, rect->y, rect->x + rect->w, rect->y + rect->h); */
SDL_UpdateRect(_device.screen, 0, 0, device->width, device->height);
}
break;
case RTGRAPHIC_CTRL_SET_MODE:
{
#if 0
struct rt_device_rect_info *rect;
rect = (struct rt_device_rect_info *)args;
if ((_device.width == rect->width) && (_device.height == rect->height)) return -RT_ERROR;
_device.width = rect->width;
_device.height = rect->height;
if (_device.screen != RT_NULL)
{
SDL_FreeSurface(_device.screen);
/* re-create screen surface */
_device.screen = SDL_SetVideoMode(_device.width, _device.height, 16, SDL_SWSURFACE | SDL_DOUBLEBUF);
if (_device.screen == NULL)
{
fprintf(stderr, "Couldn't set video mode: %s\n", SDL_GetError());
exit(1);
}
SDL_WM_SetCaption("RT-Thread/GUI Simulator", NULL);
}
#endif
}
break;
}
rt_mutex_release(sdllock);
return RT_EOK;
}
static void sdlfb_hw_init(void)
{
/* set video driver for VC++ debug */
//_putenv("SDL_VIDEODRIVER=windib");
//if (SDL_Init(SDL_INIT_VIDEO | SDL_INIT_TIMER | SDL_INIT_AUDIO) < 0)
if (SDL_Init(SDL_INIT_VIDEO) < 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;
_device.screen = SDL_SetVideoMode(_device.width, _device.height, 16, SDL_SWSURFACE | SDL_DOUBLEBUF);
if (_device.screen == NULL)
{
fprintf(stderr, "Couldn't set video mode: %s\n", SDL_GetError());
exit(1);
}
SDL_WM_SetCaption("RT-Thread/GUI Simulator", NULL);
rt_device_register(RT_DEVICE(&_device), "sdl", RT_DEVICE_FLAG_RDWR);
sdllock = rt_mutex_create("fb", RT_IPC_FLAG_FIFO);
}
#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 button_state = 0;
rt_device_t device;
#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)
{
SDL_WaitEvent(&event);
switch (event.type)
{
case SDL_MOUSEMOTION:
{
struct rtgui_event_mouse emouse;
emouse.parent.type = RTGUI_EVENT_MOUSE_MOTION;
emouse.parent.sender = RT_NULL;
emouse.wid = RT_NULL;
emouse.x = ((SDL_MouseMotionEvent *)&event)->x;
emouse.y = ((SDL_MouseMotionEvent *)&event)->y;
/* init mouse button */
emouse.button = button_state;
/* send event to server */
rtgui_server_post_event(&emouse.parent, sizeof(struct rtgui_event_mouse));
}
break;
case SDL_MOUSEBUTTONDOWN:
case SDL_MOUSEBUTTONUP:
{
struct rtgui_event_mouse emouse;
SDL_MouseButtonEvent *mb;
emouse.parent.type = RTGUI_EVENT_MOUSE_BUTTON;
emouse.parent.sender = RT_NULL;
emouse.wid = RT_NULL;
mb = (SDL_MouseButtonEvent *)&event;
emouse.x = mb->x;
emouse.y = mb->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;
button_state = emouse.button;
}
else
{
emouse.button |= RTGUI_MOUSE_BUTTON_UP;
button_state = 0;
}
/* send event to server */
rtgui_server_post_event(&emouse.parent, sizeof(struct rtgui_event_mouse));
}
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)
break;
}
//exit(0);
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_destroy(&sdl_ok_mutex);
pthread_cond_destroy(&sdl_ok_event);
#endif
}
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