126 lines
3.8 KiB
C
126 lines
3.8 KiB
C
#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) { //-V547
|
|
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]);
|
|
}
|