mirror of
https://github.com/DarkFlippers/unleashed-firmware
synced 2024-12-11 21:52:28 +00:00
125 lines
3.8 KiB
C
125 lines
3.8 KiB
C
#include "slideshow.h"
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#include <stddef.h>
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#include <storage/storage.h>
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#include <gui/icon.h>
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#include <gui/icon_i.h>
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#include <core/dangerous_defines.h>
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#define SLIDESHOW_MAGIC 0x72676468
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#define SLIDESHOW_MAX_SUPPORTED_VERSION 1
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struct Slideshow {
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Icon icon;
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uint32_t current_frame;
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bool loaded;
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};
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#pragma pack(push, 1)
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typedef struct {
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uint32_t magic;
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uint8_t version;
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uint8_t width;
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uint8_t height;
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uint8_t frame_count;
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} SlideshowFileHeader;
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_Static_assert(sizeof(SlideshowFileHeader) == 8, "Incorrect SlideshowFileHeader size");
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typedef struct {
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uint16_t size;
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} SlideshowFrameHeader;
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_Static_assert(sizeof(SlideshowFrameHeader) == 2, "Incorrect SlideshowFrameHeader size");
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#pragma pack(pop)
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Slideshow* slideshow_alloc() {
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Slideshow* ret = malloc(sizeof(Slideshow));
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ret->loaded = false;
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return ret;
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}
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void slideshow_free(Slideshow* slideshow) {
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Icon* icon = &slideshow->icon;
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if(icon) { //-V547
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for(int frame_idx = 0; frame_idx < icon->frame_count; ++frame_idx) {
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uint8_t* frame_data = (uint8_t*)icon->frames[frame_idx];
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free(frame_data);
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}
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free((uint8_t**)icon->frames);
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}
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free(slideshow);
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}
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bool slideshow_load(Slideshow* slideshow, const char* fspath) {
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Storage* storage = furi_record_open(RECORD_STORAGE);
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File* slideshow_file = storage_file_alloc(storage);
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slideshow->loaded = false;
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do {
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if(!storage_file_open(slideshow_file, fspath, FSAM_READ, FSOM_OPEN_EXISTING)) {
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break;
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}
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SlideshowFileHeader header;
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if((storage_file_read(slideshow_file, &header, sizeof(header)) != sizeof(header)) ||
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(header.magic != SLIDESHOW_MAGIC) ||
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(header.version > SLIDESHOW_MAX_SUPPORTED_VERSION)) {
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break;
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}
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Icon* icon = &slideshow->icon;
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FURI_CONST_ASSIGN(icon->frame_count, header.frame_count);
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FURI_CONST_ASSIGN(icon->width, header.width);
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FURI_CONST_ASSIGN(icon->height, header.height);
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icon->frames = malloc(header.frame_count * sizeof(uint8_t*));
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for(int frame_idx = 0; frame_idx < header.frame_count; ++frame_idx) {
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SlideshowFrameHeader frame_header;
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if(storage_file_read(slideshow_file, &frame_header, sizeof(frame_header)) !=
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sizeof(frame_header)) {
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break;
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}
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FURI_CONST_ASSIGN_PTR(icon->frames[frame_idx], malloc(frame_header.size));
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uint8_t* frame_data = (uint8_t*)icon->frames[frame_idx];
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if(storage_file_read(slideshow_file, frame_data, frame_header.size) !=
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frame_header.size) {
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break;
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}
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slideshow->loaded = (frame_idx + 1) == header.frame_count;
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}
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} while(false);
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storage_file_free(slideshow_file);
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furi_record_close(RECORD_STORAGE);
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return slideshow->loaded;
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}
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bool slideshow_is_loaded(Slideshow* slideshow) {
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return slideshow->loaded;
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}
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bool slideshow_is_one_page(Slideshow* slideshow) {
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return slideshow->loaded && (slideshow->icon.frame_count == 1);
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}
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bool slideshow_advance(Slideshow* slideshow) {
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uint8_t next_frame = slideshow->current_frame + 1;
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if(next_frame < slideshow->icon.frame_count) {
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slideshow->current_frame = next_frame;
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return true;
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}
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return false;
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}
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void slideshow_goback(Slideshow* slideshow) {
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if(slideshow->current_frame > 0) {
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slideshow->current_frame--;
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}
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}
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void slideshow_draw(Slideshow* slideshow, Canvas* canvas, uint8_t x, uint8_t y) {
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furi_assert(slideshow->current_frame < slideshow->icon.frame_count);
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canvas_draw_bitmap(
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canvas,
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x,
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y,
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slideshow->icon.width,
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slideshow->icon.height,
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slideshow->icon.frames[slideshow->current_frame]);
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}
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