Moved headers to the correct place.
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aca13320b3
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#include <stdio.h>
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#include <stdbool.h>
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#include <inttypes.h>
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#include <time.h>
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#include <GLES3/gl3.h>
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#include <unistd.h>
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#include <string.h>
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#include <stdlib.h>
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#include <stdnoreturn.h>
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#include "otd.h"
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#include "drm.h"
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#include "event.h"
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// I know this is pretty crappy,
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// but it's just for the example's sake
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struct {
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char *name;
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char *mode;
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} displays[8];
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int num_displays = 0;
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noreturn void usage(const char *name, int ret)
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{
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fprintf(stderr, "usage: %s [-o <name> [-m <mode>]]*\n"
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"\n"
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" -h \tDisplay this help text\n"
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" -o <name>\tWhich diplay to use. e.g. DVI-I-1.\n"
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" -m <mode>\tWhich mode to use. It must come after an -o option.\n"
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" \tMust be either 'preferred', 'current', widthxheight\n"
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" \tor widthxheight@rate. Defaults to 'preferred'.\n"
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"\n"
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"example: %s -o DVI-I-1 -m 1920x1080@60 -o DP-1 -m 1920x1200\n",
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name, name);
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exit(ret);
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}
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void parse_args(int argc, char *argv[])
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{
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int c;
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int i = -1;
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while ((c = getopt(argc, argv, "ho:m:")) != -1) {
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switch (c) {
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case 'h':
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usage(argv[0], 0);
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case 'o':
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i = num_displays++;
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if (num_displays == 8) {
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fprintf(stderr, "Too many displays\n");
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exit(1);
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}
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displays[i].name = strdup(optarg);
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break;
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case 'm':
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if (i == -1) {
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fprintf(stderr, "A display is required first\n");
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exit(1);
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}
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fprintf(stderr, "Assigned '%s' to '%s'\n", optarg, displays[i].name);
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displays[i].mode = optarg;
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i = -1;
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break;
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default:
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usage(argv[0], 1);
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}
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}
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// Trailing args
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if (optind != argc) {
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usage(argv[0], 1);
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}
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}
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int main(int argc, char *argv[])
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{
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parse_args(argc, argv);
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struct otd *otd = otd_start();
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if (!otd)
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return 1;
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float colour[3] = {1.0, 0.0, 0.0};
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int dec = 0;
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struct timespec start, now;
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clock_gettime(CLOCK_MONOTONIC, &start);
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struct timespec last = start;
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while (clock_gettime(CLOCK_MONOTONIC, &now) == 0 &&
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now.tv_sec < start.tv_sec + 10) {
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struct otd_event ev;
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if (!otd_get_event(otd, &ev))
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continue;
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struct otd_display *disp = ev.display;
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switch (ev.type) {
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case OTD_EV_RENDER:
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rendering_begin(disp);
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// This is all just calculating the colours.
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// It's not particularly important.
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long ms = (now.tv_sec - last.tv_sec) * 1000 +
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(now.tv_nsec - last.tv_nsec) / 1000000;
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int inc = (dec + 1) % 3;
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colour[dec] -= ms / 2000.0f;
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colour[inc] += ms / 2000.0f;
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if (colour[dec] < 0.0f) {
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colour[dec] = 0.0f;
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colour[inc] = 1.0f;
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dec = (dec + 1) % 3;
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}
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last = now;
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glViewport(0, 0, disp->width, disp->height);
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glClearColor(colour[0], colour[1], colour[2], 1.0f);
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glClear(GL_COLOR_BUFFER_BIT);
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rendering_end(disp);
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break;
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case OTD_EV_DISPLAY_REM:
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printf("%s removed\n", disp->name);
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break;
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case OTD_EV_DISPLAY_ADD:
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printf("%s added\n", disp->name);
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const char *mode = NULL;
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for (int i = 0; i < num_displays; ++i) {
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if (strcmp(disp->name, displays[i].name) == 0) {
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mode = displays[i].mode;
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}
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}
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if (!mode)
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mode = "preferred";
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if (!modeset_str(otd, ev.display, mode)) {
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fprintf(stderr, "Modesetting %s failed\n", disp->name);
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goto out;
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}
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break;
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default:
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break;
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}
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}
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out:
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otd_finish(otd);
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}
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