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//
// main.c
// PIPET-1
//
// Created by dianshi on 3/28/20.
// Copyright © 2020 dianshi. All rights reserved.
//
#include <stdio.h>
#include <stdlib.h>
#include <stdio.h>
#include <stdint.h>
#include <strings.h>
#include <getopt.h>
#include <signal.h>
#include <fcntl.h>
#include <pthread.h>
#include <SDL2/SDL.h>
#ifdef __APPLE__
#include <SDL2_ttf/SDL_ttf.h>
#else
#include <SDL2/SDL_ttf.h>
#endif
#include "pipet_view.h"
#define SCREEN_WIDTH 200
#define SCREEN_HEIGHT 100
typedef struct {
int f_output; //show statistics of pipe
int f_stopzero; //stop if 0 bytes in input
int f_nowriteout; // dont write to output
int f_graphmode; //show graph
} pipet_params;
typedef struct {
uint64_t cnt_in;
uint64_t prev_cnt_in;
uint64_t cnt_out;
} pipet_stats;
typedef struct {
int fd_in;
int fd_out;
pipet_stats *ps;
} thread_params;
//global_params
static pipet_params g_params;
static pipet_stats g_stats;
static pipet_view g_view;
static int quit=0;
static SDL_Window *window = NULL;
static SDL_Renderer *renderer = NULL;
void helper(char *progname)
{
printf("Usage: %s [OPTS]\n\n"
"-o show output stats\n"
"-s stop if there is 0 bytes in read\n"
"-n dont ouput input data\n"
"-g graphical interface\n"
"Version: 0.0.2 \n"
"\n"
, progname);
}
void sig_handler(int signo)
{
switch(signo)
{
case SIGINT:
printf("Catch SIGINT Exit\n");
if (g_params.f_output)
{
printf("Data in %d bytes Data out %d bytes",g_stats.cnt_in,g_stats.cnt_out);
}
default:
printf("Unknown signal %d\n",signo);
}
exit(0);
}
void *thread_pipe(void *param)
{
thread_params *tp = (thread_params *)param;
int cur_read=-1;
int cur_write=-1;
const uint64_t BUF_SZ=1024*4;
uint8_t buf[BUF_SZ];
printf("Start thread\n");
while (quit == 0)
{
cur_read = read(tp->fd_in,buf, BUF_SZ);
if (g_params.f_stopzero)
{
if (cur_read < 1)
{
quit = 1;
break;
}
}
g_stats.cnt_in += cur_read;// printf("Read %d\n", cur_read);
if (!g_params.f_nowriteout)
{
cur_write = write(tp->fd_out, buf, cur_read);
g_stats.cnt_out += cur_write;
}
}
//exit(0);
pthread_exit(NULL);
}
int main(int argc, const char * argv[]) {
int c;
int rc;
int fd_stdin=-1,fd_stdout=-1;
int cur_read,cur_write;
int prev_val=0;
pthread_t thread;
SDL_Event event;
const uint64_t BUF_SZ=1024*4;
uint8_t buf[BUF_SZ];
thread_params tp;
// insert code here...
memset(&g_params,0,sizeof(pipet_params));
memset(&g_stats,0,sizeof(pipet_stats));
memset(&g_view,0,sizeof(pipet_view));
memset(&tp,0,sizeof(thread_params));
pv_init(&g_view, 200, SCREEN_WIDTH, SCREEN_HEIGHT);
fd_stdin = fileno(stdin);
fd_stdout = fileno(stdout);
//int flags = fcntl(fd_stdin, F_GETFL, 0);
//fcntl(fd_stdin, F_SETFL, flags | O_NONBLOCK);
if (signal(SIGINT,sig_handler) == SIG_ERR)
{
printf("cannot register signal handler\n");
exit(1);
}
//process arguments
while ((c = getopt(argc, argv, "osng")) != -1)
{
switch (c)
{
case 'o':
g_params.f_output = 1;
break;
case 's':
g_params.f_stopzero = 1;
break;
case 'n':
g_params.f_nowriteout = 1;
break;
case 'g':
g_params.f_graphmode = 1;
break;
default:
helper(argv[0]);
exit(1);
}
}
if ( argc < 2 )
{
helper(argv[0]);
exit(1);
}
//start graph
if (g_params.f_graphmode)
{
printf("Start thread\n");
SDL_Init(SDL_INIT_VIDEO);
window = SDL_CreateWindow("PIPET-1", SDL_WINDOWPOS_UNDEFINED, SDL_WINDOWPOS_UNDEFINED, SCREEN_WIDTH, SCREEN_HEIGHT, SDL_WINDOW_SHOWN|SDL_WINDOW_OPENGL);
renderer = SDL_CreateRenderer(window, -1, SDL_RENDERER_ACCELERATED);
SDL_SetRenderDrawColor(renderer, 0xff, 0x99, 0x99, 0x99);
//int rc = pthread_create(&thread, NULL, thread_graph, NULL);
//if (rc)
{
// printf("Cannot start thread\n");
}
}
tp.fd_in = dup(fd_stdin);
tp.fd_out = dup(fd_stdout);
rc = pthread_create(&thread, NULL, thread_pipe, &tp);
if (rc)
{
printf("Cannot lunch pipe thread\n");
}
//main loop
int i=0;
while (quit == 0)
{
i+=10;
/*
//printf("!!!\n");
cur_read = read(fd_stdin,buf, BUF_SZ);
if (g_params.f_stopzero)
{
if (cur_read < 1)
{
quit = 1;
break;
}
}
g_stats.cnt_in += cur_read;// printf("Read %d\n", cur_read);
if (!g_params.f_nowriteout)
{
cur_write = write(fd_stdout, buf, cur_read);
g_stats.cnt_out += cur_write;
}
*/
//sdl thread for now its here
if (g_params.f_graphmode)
{
//printf("SDL loop\n");
while (SDL_PollEvent(&event))
{
switch (event.type)
{
case SDL_QUIT:
{
quit = 1;
break;
}
//case SDL_KE
}
//sleep(1);
}
SDL_SetRenderDrawColor(renderer, 0, 0, 0, 0);
SDL_RenderClear(renderer);
pv_render(&g_view, renderer);
SDL_RenderPresent(renderer);
pv_add_dot(&g_view, g_stats.cnt_in-g_stats.prev_cnt_in);
g_stats.prev_cnt_in = g_stats.cnt_in;
}
sleep(1);
}
if (g_params.f_output)
{
printf("Data in %d bytes Data out %d bytes\n", g_stats.cnt_in, g_stats.cnt_out);
}
if (g_params.f_graphmode)
{
SDL_DestroyRenderer(renderer);
SDL_DestroyWindow(window);
SDL_Quit();
}
//pthread_join(&thread,NULL);
//pthread_exit(NULL);
return 0;
}
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