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MXC_A39_20240320/MXC-A39/lv_drivers/display/monitor.c

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/**
* @file monitor.c
*
*/
/*********************
* INCLUDES
*********************/
#include "monitor.h"
#if USE_MONITOR
#ifndef MONITOR_SDL_INCLUDE_PATH
# define MONITOR_SDL_INCLUDE_PATH <SDL2/SDL.h>
#endif
#include <stdlib.h>
#include <stdbool.h>
#include <string.h>
#include MONITOR_SDL_INCLUDE_PATH
#include "../indev/mouse.h"
#include "../indev/keyboard.h"
#include "../indev/mousewheel.h"
/*********************
* DEFINES
*********************/
#define SDL_REFR_PERIOD 50 /*ms*/
#ifndef MONITOR_ZOOM
#define MONITOR_ZOOM 1
#endif
#ifndef MONITOR_HOR_RES
#define MONITOR_HOR_RES LV_HOR_RES
#endif
#ifndef MONITOR_VER_RES
#define MONITOR_VER_RES LV_VER_RES
#endif
/**********************
* TYPEDEFS
**********************/
typedef struct {
SDL_Window * window;
SDL_Renderer * renderer;
SDL_Texture * texture;
volatile bool sdl_refr_qry;
#if MONITOR_DOUBLE_BUFFERED
uint32_t * tft_fb_act;
#else
uint32_t * tft_fb;
#endif
}monitor_t;
/**********************
* STATIC PROTOTYPES
**********************/
static void window_create(monitor_t * m);
static void window_update(monitor_t * m);
int quit_filter(void * userdata, SDL_Event * event);
static void monitor_sdl_clean_up(void);
static void monitor_sdl_init(void);
static void sdl_event_handler(lv_timer_t * t);
static void monitor_sdl_refr(lv_timer_t * t);
/***********************
* GLOBAL PROTOTYPES
***********************/
/**********************
* STATIC VARIABLES
**********************/
monitor_t monitor;
#if MONITOR_DUAL
monitor_t monitor2;
#endif
static volatile bool sdl_inited = false;
static volatile bool sdl_quit_qry = false;
/**********************
* MACROS
**********************/
/**********************
* GLOBAL FUNCTIONS
**********************/
/**
* Initialize the monitor
*/
void monitor_init(void)
{
monitor_sdl_init();
lv_timer_create(sdl_event_handler, 10, NULL);
}
/**
* Flush a buffer to the marked area
* @param drv pointer to driver where this function belongs
* @param area an area where to copy `color_p`
* @param color_p an array of pixel to copy to the `area` part of the screen
*/
void monitor_flush(lv_disp_drv_t * disp_drv, const lv_area_t * area, lv_color_t * color_p)
{
lv_coord_t hres = disp_drv->hor_res;
lv_coord_t vres = disp_drv->ver_res;
// printf("x1:%d,y1:%d,x2:%d,y2:%d\n", area->x1, area->y1, area->x2, area->y2);
/*Return if the area is out the screen*/
if(area->x2 < 0 || area->y2 < 0 || area->x1 > hres - 1 || area->y1 > vres - 1) {
lv_disp_flush_ready(disp_drv);
return;
}
#if MONITOR_DOUBLE_BUFFERED
monitor.tft_fb_act = (uint32_t *)color_p;
#else /*MONITOR_DOUBLE_BUFFERED*/
int32_t y;
#if LV_COLOR_DEPTH != 24 && LV_COLOR_DEPTH != 32 /*32 is valid but support 24 for backward compatibility too*/
int32_t x;
for(y = area->y1; y <= area->y2 && y < disp_drv->ver_res; y++) {
for(x = area->x1; x <= area->x2; x++) {
monitor.tft_fb[y * disp_drv->hor_res + x] = lv_color_to32(*color_p);
color_p++;
}
}
#else
uint32_t w = lv_area_get_width(area);
for(y = area->y1; y <= area->y2 && y < disp_drv->ver_res; y++) {
memcpy(&monitor.tft_fb[y * MONITOR_HOR_RES + area->x1], color_p, w * sizeof(lv_color_t));
color_p += w;
}
#endif
#endif /*MONITOR_DOUBLE_BUFFERED*/
monitor.sdl_refr_qry = true;
/* TYPICALLY YOU DO NOT NEED THIS
* If it was the last part to refresh update the texture of the window.*/
if(lv_disp_flush_is_last(disp_drv)) {
monitor_sdl_refr(NULL);
}
/*IMPORTANT! It must be called to tell the system the flush is ready*/
lv_disp_flush_ready(disp_drv);
}
#if MONITOR_DUAL
/**
* Flush a buffer to the marked area
* @param drv pointer to driver where this function belongs
* @param area an area where to copy `color_p`
* @param color_p an array of pixel to copy to the `area` part of the screen
*/
void monitor_flush2(lv_disp_drv_t * disp_drv, const lv_area_t * area, lv_color_t * color_p)
{
lv_coord_t hres = disp_drv->hor_res;
lv_coord_t vres = disp_drv->ver_res;
/*Return if the area is out the screen*/
if(area->x2 < 0 || area->y2 < 0 || area->x1 > hres - 1 || area->y1 > vres - 1) {
lv_disp_flush_ready(disp_drv);
return;
}
#if MONITOR_DOUBLE_BUFFERED
monitor2.tft_fb_act = (uint32_t *)color_p;
monitor2.sdl_refr_qry = true;
/*IMPORTANT! It must be called to tell the system the flush is ready*/
lv_disp_flush_ready(disp_drv);
#else
int32_t y;
#if LV_COLOR_DEPTH != 24 && LV_COLOR_DEPTH != 32 /*32 is valid but support 24 for backward compatibility too*/
int32_t x;
for(y = area->y1; y <= area->y2 && y < disp_drv->ver_res; y++) {
for(x = area->x1; x <= area->x2; x++) {
monitor2.tft_fb[y * disp_drv->hor_res + x] = lv_color_to32(*color_p);
color_p++;
}
}
#else
uint32_t w = lv_area_get_width(area);
for(y = area->y1; y <= area->y2 && y < disp_drv->ver_res; y++) {
memcpy(&monitor2.tft_fb[y * disp_drv->hor_res + area->x1], color_p, w * sizeof(lv_color_t));
color_p += w;
}
#endif
monitor2.sdl_refr_qry = true;
/* TYPICALLY YOU DO NOT NEED THIS
* If it was the last part to refresh update the texture of the window.*/
if(lv_disp_flush_is_last(disp_drv)) {
monitor_sdl_refr(NULL);
}
/*IMPORTANT! It must be called to tell the system the flush is ready*/
lv_disp_flush_ready(disp_drv);
#endif
}
#endif
/**********************
* STATIC FUNCTIONS
**********************/
/**
* SDL main thread. All SDL related task have to be handled here!
* It initializes SDL, handles drawing and the mouse.
*/
static void sdl_event_handler(lv_timer_t * t)
{
(void)t;
/*Refresh handling*/
SDL_Event event;
while(SDL_PollEvent(&event)) {
#if USE_MOUSE != 0
mouse_handler(&event);
#endif
#if USE_MOUSEWHEEL != 0
mousewheel_handler(&event);
#endif
#if USE_KEYBOARD
keyboard_handler(&event);
#endif
if((&event)->type == SDL_WINDOWEVENT) {
switch((&event)->window.event) {
#if SDL_VERSION_ATLEAST(2, 0, 5)
case SDL_WINDOWEVENT_TAKE_FOCUS:
#endif
case SDL_WINDOWEVENT_EXPOSED:
window_update(&monitor);
#if MONITOR_DUAL
window_update(&monitor2);
#endif
break;
default:
break;
}
}
}
/*Run until quit event not arrives*/
if(sdl_quit_qry) {
monitor_sdl_clean_up();
exit(0);
}
}
/**
* SDL main thread. All SDL related task have to be handled here!
* It initializes SDL, handles drawing and the mouse.
*/
static void monitor_sdl_refr(lv_timer_t * t)
{
(void)t;
/*Refresh handling*/
if(monitor.sdl_refr_qry != false) {
monitor.sdl_refr_qry = false;
window_update(&monitor);
}
#if MONITOR_DUAL
if(monitor2.sdl_refr_qry != false) {
monitor2.sdl_refr_qry = false;
window_update(&monitor2);
}
#endif
}
int quit_filter(void * userdata, SDL_Event * event)
{
(void)userdata;
if(event->type == SDL_WINDOWEVENT) {
if(event->window.event == SDL_WINDOWEVENT_CLOSE) {
sdl_quit_qry = true;
}
}
else if(event->type == SDL_QUIT) {
sdl_quit_qry = true;
}
return 1;
}
static void monitor_sdl_clean_up(void)
{
SDL_DestroyTexture(monitor.texture);
SDL_DestroyRenderer(monitor.renderer);
SDL_DestroyWindow(monitor.window);
#if MONITOR_DUAL
SDL_DestroyTexture(monitor2.texture);
SDL_DestroyRenderer(monitor2.renderer);
SDL_DestroyWindow(monitor2.window);
#endif
SDL_Quit();
}
static void monitor_sdl_init(void)
{
/*Initialize the SDL*/
SDL_Init(SDL_INIT_VIDEO);
SDL_SetEventFilter(quit_filter, NULL);
window_create(&monitor);
#if MONITOR_DUAL
window_create(&monitor2);
int x, y;
SDL_GetWindowPosition(monitor2.window, &x, &y);
SDL_SetWindowPosition(monitor.window, x + (MONITOR_HOR_RES * MONITOR_ZOOM) / 2 + 10, y);
SDL_SetWindowPosition(monitor2.window, x - (MONITOR_HOR_RES * MONITOR_ZOOM) / 2 - 10, y);
#endif
sdl_inited = true;
}
static void window_create(monitor_t * m)
{
m->window = SDL_CreateWindow("TFT Simulator",
SDL_WINDOWPOS_UNDEFINED, SDL_WINDOWPOS_UNDEFINED,
MONITOR_HOR_RES * MONITOR_ZOOM, MONITOR_VER_RES * MONITOR_ZOOM, 0); /*last param. SDL_WINDOW_BORDERLESS to hide borders*/
m->renderer = SDL_CreateRenderer(m->window, -1, SDL_RENDERER_SOFTWARE);
m->texture = SDL_CreateTexture(m->renderer,
SDL_PIXELFORMAT_ARGB8888, SDL_TEXTUREACCESS_STATIC, MONITOR_HOR_RES, MONITOR_VER_RES);
SDL_SetTextureBlendMode(m->texture, SDL_BLENDMODE_BLEND);
/*Initialize the frame buffer to gray (77 is an empirical value) */
#if MONITOR_DOUBLE_BUFFERED
SDL_UpdateTexture(m->texture, NULL, m->tft_fb_act, MONITOR_HOR_RES * sizeof(uint32_t));
#else
m->tft_fb = (uint32_t *)malloc(sizeof(uint32_t) * MONITOR_HOR_RES * MONITOR_VER_RES);
memset(m->tft_fb, 0x44, MONITOR_HOR_RES * MONITOR_VER_RES * sizeof(uint32_t));
#endif
m->sdl_refr_qry = true;
}
static void window_update(monitor_t * m)
{
#if MONITOR_DOUBLE_BUFFERED == 0
SDL_UpdateTexture(m->texture, NULL, m->tft_fb, MONITOR_HOR_RES * sizeof(uint32_t));
#else
if(m->tft_fb_act == NULL) return;
SDL_UpdateTexture(m->texture, NULL, m->tft_fb_act, MONITOR_HOR_RES * sizeof(uint32_t));
#endif
SDL_RenderClear(m->renderer);
#if LV_COLOR_SCREEN_TRANSP
SDL_SetRenderDrawColor(m->renderer, 0xff, 0, 0, 0xff);
SDL_Rect r;
r.x = 0; r.y = 0; r.w = MONITOR_HOR_RES; r.w = MONITOR_VER_RES;
SDL_RenderDrawRect(m->renderer, &r);
#endif
/*Update the renderer with the texture containing the rendered image*/
SDL_RenderCopy(m->renderer, m->texture, NULL, NULL);
SDL_RenderPresent(m->renderer);
}
#endif /*USE_MONITOR*/
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