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166 lines
3.9 KiB
166 lines
3.9 KiB
/*
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* Copyright (C) 2015 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#include <unistd.h>
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#include <stdlib.h>
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#include <limits.h>
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#include <time.h>
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#include <linux/input.h>
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#include <functional>
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#include <cutils/klog.h>
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#include <minui/minui.h>
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#include <utils/SystemClock.h>
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#define NEXT_TIMEOUT_MS 5000
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#define LAST_TIMEOUT_MS 30000
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#define LOGE(x...) do { KLOG_ERROR("slideshow", x); } while (0)
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static int input_cb(int fd, unsigned int epevents, int *key_code)
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{
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struct input_event ev;
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*key_code = -1;
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if (ev_get_input(fd, epevents, &ev)) {
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return -1;
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}
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if (ev.type == EV_KEY && ev.value == 1) {
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*key_code = ev.code;
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}
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return 0;
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}
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static void clear()
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{
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gr_color(0, 0, 0, 0);
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gr_clear();
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gr_flip();
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}
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static void draw(const char *resname)
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{
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GRSurface* surface;
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int w, h, x, y;
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if (res_create_display_surface(resname, &surface) < 0) {
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LOGE("failed to create surface for %s\n", resname);
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return;
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}
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w = gr_get_width(surface);
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h = gr_get_height(surface);
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x = (gr_fb_width() - w) / 2;
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y = (gr_fb_height() - h) / 2;
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gr_blit(surface, 0, 0, w, h, x, y);
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gr_flip();
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res_free_surface(surface);
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}
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int usage()
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{
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LOGE("usage: slideshow [-t timeout] image.png [image2.png ...] last.png\n");
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return EXIT_FAILURE;
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}
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int main(int argc, char **argv)
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{
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int key_code = -1;
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int input = false;
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int opt;
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long int timeout = NEXT_TIMEOUT_MS;
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int64_t start;
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while ((opt = getopt(argc, argv, "t:")) != -1) {
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switch (opt) {
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case 't':
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timeout = strtol(optarg, NULL, 0);
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if (timeout < 0 || timeout >= LONG_MAX) {
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timeout = NEXT_TIMEOUT_MS;
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LOGE("invalid timeout %s, defaulting to %ld\n", optarg,
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timeout);
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}
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break;
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default:
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return usage();
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}
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}
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if (optind >= argc) {
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return usage();
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}
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if (gr_init() == -1 || ev_init(std::bind(&input_cb, std::placeholders::_1,
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std::placeholders::_2, &key_code)) == -1) {
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LOGE("failed to initialize minui\n");
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return EXIT_FAILURE;
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}
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/* display all images except the last one, switch to next image after
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* timeout or user input */
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while (optind < argc - 1) {
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draw(argv[optind++]);
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start = android::uptimeMillis();
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long int timeout_remaining = timeout;
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do {
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if (ev_wait(timeout_remaining) == 0) {
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ev_dispatch();
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if (key_code != -1) {
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input = true;
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break;
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}
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}
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timeout_remaining -= android::uptimeMillis() - start;
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} while (timeout_remaining > 0);
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};
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/* if there was user input while showing the images, display the last
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* image and wait until the power button is pressed or LAST_TIMEOUT_MS
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* has elapsed */
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if (input) {
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start = android::uptimeMillis();
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draw(argv[optind]);
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do {
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if (ev_wait(timeout) == 0) {
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ev_dispatch();
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}
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if (android::uptimeMillis() - start >= LAST_TIMEOUT_MS) {
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break;
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}
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} while (key_code != KEY_POWER);
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}
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clear();
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gr_exit();
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ev_exit();
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return EXIT_SUCCESS;
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}
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