115 lines
2.7 KiB
C
115 lines
2.7 KiB
C
#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <ncurses.h>
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#include "msg.h"
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#include "display.h"
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void setup_display() {
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initscr(); // ncurses initialization
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curs_set(0); // invisible cursor
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}
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void cleanup_display() {
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endwin(); // clean ncurses shutdown
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}
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/*
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image[row][col] >>> image[row*width+col];
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uint32_t width; // normally 80
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uint32_t height; // normally 25, may vary
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char *image; // dimension is width x height
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*/
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static void print_current_image(const struct message* msg, int start, int end) {
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end = 80; // end is ignored and 80 is used, should be handled properly later
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//move(0,0); // start in the upper left corner
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char *pic = msg->image; // get a ptr to the actual image
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for (int row=0; row < 25; row++) { // iterate over rows
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char *original_line = pic + row * msg->width; // pointer to the start of the line to print
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char *line = (char*) malloc(end-start+1); // allocate a line because we modify it
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strcpy(line, original_line + start); // get a line from the right start
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line[end-start] = '\0'; // terminate it
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mvprintw(row, 0, "%s", line); // print it
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free(line); // free it
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}
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refresh(); // refresh the screen
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}
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void prntscreen(const struct message *msg, const struct prog_info *pinfo);
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void callback(const struct message *msg, const struct prog_info *pinfo) {
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//printf("in callback, tst=%d\n", msg->timestamp);
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// calculate the actual offset to use
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//int start = msg->timestamp % msg->width + pinfo->client_offset;
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//print_current_image(msg, start, start+80);
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prntscreen(msg, pinfo);
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}
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//int init = 0;
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//int rows;
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//int cols;
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void prntscreen(const struct message *msg, const struct prog_info *pinfo) {
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static int init = 0;
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static int rows;
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static int cols;
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static char *img = NULL;
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static int w;
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static int h;
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static int f;
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if (!img && msg->image) {
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img = msg->image;
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w = msg->width;
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h = msg->height;
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f = msg->frames;
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}
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if (!img) {
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printf("awaiting state ... %d\r", msg->timestamp);
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return;
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}
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if (!init) {
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// printf("init start\n");
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initscr();
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curs_set(0); // invisible cursor
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getmaxyx(stdscr, rows, cols);
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init = 1;
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// printf("init end\n");
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}
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int frame = msg->timestamp;
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int right = pinfo->client_offset;
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int left = right + cols;
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// for (int y=0; y<h; y++)
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// for (int x=0; x<w; x++)
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// mvaddch(y,x,img[y*w+x]);
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// printf("loop\n");
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int rowoffset = (rows-h)/2;
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//int coloffset = left-frame;
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int imgoff = (frame % f) * w * h;
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for (int y=0; y<h; y++) { // y<msg->height; y++) {
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for (int x=left-frame; x<cols; x++) {
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if (x<0)
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continue;
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//mvaddch(y + rowoffset, x, ('0' + x-(left-frame)+y));
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int p = x-(left-frame);
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mvaddch(y + rowoffset, x, p>=w-1?' ':img[imgoff+(y*w+p)]);
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}
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}
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refresh();
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}
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