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