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413 lines
12 KiB
413 lines
12 KiB
/* animation.c - boot animation
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*
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* Copyright (C) 2009 Red Hat, Inc.
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2, or (at your option)
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* any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
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* 02111-1307, USA.
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*
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* Written by: William Jon McCann <jmccann@redhat.com>
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*/
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#include "config.h"
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#include <assert.h>
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#include <dirent.h>
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#include <errno.h>
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#include <fcntl.h>
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#include <math.h>
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#include <signal.h>
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#include <stdbool.h>
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#include <stdio.h>
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#include <stdint.h>
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#include <stdlib.h>
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#include <string.h>
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#include <sys/ioctl.h>
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#include <sys/stat.h>
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#include <sys/time.h>
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#include <sys/types.h>
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#include <values.h>
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#include <unistd.h>
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#include <wchar.h>
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#include "ply-animation.h"
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#include "ply-event-loop.h"
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#include "ply-array.h"
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#include "ply-logger.h"
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#include "ply-image.h"
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#include "ply-pixel-buffer.h"
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#include "ply-utils.h"
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#include <linux/kd.h>
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#ifndef FRAMES_PER_SECOND
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#define FRAMES_PER_SECOND 30
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#endif
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struct _ply_animation
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{
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ply_array_t *frames;
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ply_event_loop_t *loop;
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char *image_dir;
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char *frames_prefix;
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ply_pixel_display_t *display;
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ply_trigger_t *stop_trigger;
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int frame_number;
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long x, y;
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long width, height;
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double start_time, previous_time, now;
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uint32_t is_stopped : 1;
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uint32_t stop_requested : 1;
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};
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static void ply_animation_stop_now (ply_animation_t *animation);
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ply_animation_t *
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ply_animation_new (const char *image_dir,
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const char *frames_prefix)
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{
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ply_animation_t *animation;
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assert (image_dir != NULL);
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assert (frames_prefix != NULL);
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animation = calloc (1, sizeof(ply_animation_t));
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animation->frames = ply_array_new (PLY_ARRAY_ELEMENT_TYPE_POINTER);
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animation->frames_prefix = strdup (frames_prefix);
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animation->image_dir = strdup (image_dir);
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animation->frame_number = 0;
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animation->is_stopped = true;
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animation->stop_requested = false;
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animation->width = 0;
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animation->height = 0;
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return animation;
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}
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static void
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ply_animation_remove_frames (ply_animation_t *animation)
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{
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int i;
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ply_pixel_buffer_t **frames;
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frames = (ply_pixel_buffer_t **) ply_array_steal_pointer_elements (animation->frames);
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for (i = 0; frames[i] != NULL; i++) {
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ply_pixel_buffer_free (frames[i]);
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}
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free (frames);
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}
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void
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ply_animation_free (ply_animation_t *animation)
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{
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if (animation == NULL)
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return;
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if (!animation->is_stopped)
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ply_animation_stop_now (animation);
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ply_animation_remove_frames (animation);
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ply_array_free (animation->frames);
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free (animation->frames_prefix);
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free (animation->image_dir);
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free (animation);
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}
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static bool
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animate_at_time (ply_animation_t *animation,
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double time)
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{
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int number_of_frames;
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ply_pixel_buffer_t *const *frames;
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ply_rectangle_t frame_area;
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bool should_continue;
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number_of_frames = ply_array_get_size (animation->frames);
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if (number_of_frames == 0)
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return false;
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should_continue = true;
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if (animation->frame_number > number_of_frames - 1) {
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ply_trace ("reached last frame of animation");
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return false;
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}
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if (animation->stop_requested) {
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ply_trace ("stopping animation in the middle of sequence");
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should_continue = false;
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}
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frames = (ply_pixel_buffer_t *const *) ply_array_get_pointer_elements (animation->frames);
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ply_pixel_buffer_get_size (frames[animation->frame_number], &frame_area);
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ply_pixel_display_draw_area (animation->display,
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animation->x, animation->y,
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frame_area.width,
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frame_area.height);
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animation->frame_number++;
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return should_continue;
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}
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static void
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on_timeout (ply_animation_t *animation)
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{
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double sleep_time;
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bool should_continue;
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animation->previous_time = animation->now;
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animation->now = ply_get_timestamp ();
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should_continue = animate_at_time (animation,
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animation->now - animation->start_time);
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sleep_time = 1.0 / FRAMES_PER_SECOND;
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sleep_time = MAX (sleep_time - (ply_get_timestamp () - animation->now),
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0.005);
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if (!should_continue) {
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if (animation->stop_trigger != NULL) {
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ply_trace ("firing off stop trigger");
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ply_trigger_pull (animation->stop_trigger, NULL);
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animation->stop_trigger = NULL;
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}
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} else {
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ply_event_loop_watch_for_timeout (animation->loop,
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sleep_time,
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(ply_event_loop_timeout_handler_t)
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on_timeout, animation);
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}
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}
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static bool
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ply_animation_add_frame (ply_animation_t *animation,
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const char *filename)
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{
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ply_image_t *image;
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ply_pixel_buffer_t *frame;
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image = ply_image_new (filename);
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if (!ply_image_load (image)) {
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ply_image_free (image);
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return false;
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}
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frame = ply_image_convert_to_pixel_buffer (image);
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ply_array_add_pointer_element (animation->frames, frame);
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animation->width = MAX (animation->width, (long) ply_pixel_buffer_get_width (frame));
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animation->height = MAX (animation->height, (long) ply_pixel_buffer_get_height (frame));
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return true;
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}
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static bool
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ply_animation_add_frames (ply_animation_t *animation)
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{
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struct dirent **entries;
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int number_of_entries;
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int number_of_frames;
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int i;
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bool load_finished;
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entries = NULL;
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number_of_entries = scandir (animation->image_dir, &entries, NULL, versionsort);
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if (number_of_entries <= 0)
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return false;
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load_finished = false;
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for (i = 0; i < number_of_entries; i++) {
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if (strncmp (entries[i]->d_name,
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animation->frames_prefix,
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strlen (animation->frames_prefix)) == 0
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&& (strlen (entries[i]->d_name) > 4)
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&& strcmp (entries[i]->d_name + strlen (entries[i]->d_name) - 4, ".png") == 0) {
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char *filename;
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filename = NULL;
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asprintf (&filename, "%s/%s", animation->image_dir, entries[i]->d_name);
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if (!ply_animation_add_frame (animation, filename))
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goto out;
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free (filename);
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}
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free (entries[i]);
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entries[i] = NULL;
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}
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number_of_frames = ply_array_get_size (animation->frames);
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if (number_of_frames == 0) {
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ply_trace ("%s directory had no files starting with %s",
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animation->image_dir, animation->frames_prefix);
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goto out;
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} else {
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ply_trace ("animation has %d frames", number_of_frames);
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}
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load_finished = true;
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out:
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if (!load_finished) {
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ply_animation_remove_frames (animation);
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while (i < number_of_entries) {
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free (entries[i]);
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i++;
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}
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}
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free (entries);
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return (ply_array_get_size (animation->frames) > 0);
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}
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bool
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ply_animation_load (ply_animation_t *animation)
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{
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if (ply_array_get_size (animation->frames) != 0) {
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ply_animation_remove_frames (animation);
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ply_trace ("reloading animation with new set of frames");
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} else {
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ply_trace ("loading frames for animation");
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}
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if (!ply_animation_add_frames (animation))
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return false;
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return true;
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}
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bool
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ply_animation_start (ply_animation_t *animation,
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ply_pixel_display_t *display,
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ply_trigger_t *stop_trigger,
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long x,
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long y)
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{
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assert (animation != NULL);
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if (!animation->is_stopped)
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return true;
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ply_trace ("starting animation");
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animation->loop = ply_event_loop_get_default ();
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animation->display = display;
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animation->stop_trigger = stop_trigger;
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animation->is_stopped = false;
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animation->stop_requested = false;
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animation->x = x;
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animation->y = y;
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animation->start_time = ply_get_timestamp ();
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ply_event_loop_watch_for_timeout (animation->loop,
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1.0 / FRAMES_PER_SECOND,
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(ply_event_loop_timeout_handler_t)
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on_timeout, animation);
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return true;
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}
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static void
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ply_animation_stop_now (ply_animation_t *animation)
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{
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animation->is_stopped = true;
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ply_trace ("stopping animation now");
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if (animation->loop != NULL) {
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ply_event_loop_stop_watching_for_timeout (animation->loop,
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(ply_event_loop_timeout_handler_t)
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on_timeout, animation);
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animation->loop = NULL;
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}
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animation->display = NULL;
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}
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void
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ply_animation_stop (ply_animation_t *animation)
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{
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if (animation->is_stopped) {
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ply_trace ("animation already stopped, ignoring stop request");
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return;
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}
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if (animation->stop_trigger == NULL) {
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ply_animation_stop_now (animation);
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return;
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}
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ply_trace ("stopping animation next time through the loop");
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animation->stop_requested = true;
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}
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bool
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ply_animation_is_stopped (ply_animation_t *animation)
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{
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return animation->is_stopped;
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}
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void
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ply_animation_draw_area (ply_animation_t *animation,
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ply_pixel_buffer_t *buffer,
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long x,
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long y,
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unsigned long width,
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unsigned long height)
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{
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ply_pixel_buffer_t *const *frames;
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int number_of_frames;
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int frame_index;
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if (animation->is_stopped)
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return;
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number_of_frames = ply_array_get_size (animation->frames);
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frame_index = MIN (animation->frame_number, number_of_frames - 1);
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frames = (ply_pixel_buffer_t *const *) ply_array_get_pointer_elements (animation->frames);
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ply_pixel_buffer_fill_with_buffer (buffer,
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frames[frame_index],
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animation->x, animation->y);
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}
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long
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ply_animation_get_width (ply_animation_t *animation)
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{
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return animation->width;
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}
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long
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ply_animation_get_height (ply_animation_t *animation)
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{
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return animation->height;
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}
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/* vim: set ts=4 sw=4 expandtab autoindent cindent cino={.5s,(0: */
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