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bl_mcu_sdk/components/lvgl/extra/libs/rlottie/lv_rlottie.c

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/**
* @file lv_rlottie.c
*
*/
/*********************
* INCLUDES
*********************/
#include "lv_rlottie.h"
#if LV_USE_RLOTTIE
#include <rlottie_capi.h>
/*********************
* DEFINES
*********************/
#define MY_CLASS &lv_rlottie_class
#define LV_ARGB32 32
/**********************
* TYPEDEFS
**********************/
#define LV_ARGB32 32
/**********************
* STATIC PROTOTYPES
**********************/
static void lv_rlottie_constructor(const lv_obj_class_t * class_p, lv_obj_t * obj);
static void lv_rlottie_destructor(const lv_obj_class_t * class_p, lv_obj_t * obj);
static void next_frame_task_cb(lv_timer_t * t);
/**********************
* STATIC VARIABLES
**********************/
const lv_obj_class_t lv_rlottie_class = {
.constructor_cb = lv_rlottie_constructor,
.destructor_cb = lv_rlottie_destructor,
.instance_size = sizeof(lv_rlottie_t),
.base_class = &lv_img_class
};
static lv_coord_t create_width;
static lv_coord_t create_height;
static const char * rlottie_desc_create;
static const char * path_create;
/**********************
* MACROS
**********************/
/**********************
* GLOBAL FUNCTIONS
**********************/
lv_obj_t * lv_rlottie_create_from_file(lv_obj_t * parent, lv_coord_t width, lv_coord_t height, const char * path)
{
create_width = width;
create_height = height;
path_create = path;
rlottie_desc_create = NULL;
LV_LOG_INFO("begin");
lv_obj_t * obj = lv_obj_class_create_obj(MY_CLASS, parent);
lv_obj_class_init_obj(obj);
return obj;
}
lv_obj_t * lv_rlottie_create_from_raw(lv_obj_t * parent, lv_coord_t width, lv_coord_t height, const char * rlottie_desc)
{
create_width = width;
create_height = height;
rlottie_desc_create = rlottie_desc;
path_create = NULL;
LV_LOG_INFO("begin");
lv_obj_t * obj = lv_obj_class_create_obj(MY_CLASS, parent);
lv_obj_class_init_obj(obj);
return obj;
}
void lv_rlottie_set_play_mode(lv_obj_t * obj, const lv_rlottie_ctrl_t ctrl)
{
lv_rlottie_t * rlottie = (lv_rlottie_t *) obj;
rlottie->play_ctrl = ctrl;
if(rlottie->task && (rlottie->dest_frame != rlottie->current_frame ||
(rlottie->play_ctrl & LV_RLOTTIE_CTRL_PAUSE) == LV_RLOTTIE_CTRL_PLAY)) {
lv_timer_resume(rlottie->task);
}
}
void lv_rlottie_set_current_frame(lv_obj_t * obj, const size_t goto_frame)
{
lv_rlottie_t * rlottie = (lv_rlottie_t *) obj;
rlottie->current_frame = goto_frame < rlottie->total_frames ? goto_frame : rlottie->total_frames - 1;
}
/**********************
* STATIC FUNCTIONS
**********************/
static void lv_rlottie_constructor(const lv_obj_class_t * class_p, lv_obj_t * obj)
{
LV_UNUSED(class_p);
lv_rlottie_t * rlottie = (lv_rlottie_t *) obj;
if(rlottie_desc_create) {
rlottie->animation = lottie_animation_from_data(rlottie_desc_create, rlottie_desc_create, "");
}
else if(path_create) {
rlottie->animation = lottie_animation_from_file(path_create);
}
if(rlottie->animation == NULL) {
LV_LOG_WARN("The aniamtion can't be opened");
return;
}
rlottie->total_frames = lottie_animation_get_totalframe(rlottie->animation);
rlottie->framerate = (size_t)lottie_animation_get_framerate(rlottie->animation);
rlottie->current_frame = 0;
rlottie->scanline_width = create_width * LV_ARGB32 / 8;
size_t allocaled_buf_size = (create_width * create_height * LV_ARGB32 / 8);
rlottie->allocated_buf = lv_mem_alloc(allocaled_buf_size);
if(rlottie->allocated_buf != NULL) {
rlottie->allocated_buffer_size = allocaled_buf_size;
memset(rlottie->allocated_buf, 0, allocaled_buf_size);
}
rlottie->imgdsc.header.always_zero = 0;
rlottie->imgdsc.header.cf = LV_IMG_CF_TRUE_COLOR_ALPHA;
rlottie->imgdsc.header.h = create_height;
rlottie->imgdsc.header.w = create_width;
rlottie->imgdsc.data = (void *)rlottie->allocated_buf;
rlottie->imgdsc.data_size = allocaled_buf_size;
lv_img_set_src(obj, &rlottie->imgdsc);
rlottie->play_ctrl = LV_RLOTTIE_CTRL_FORWARD | LV_RLOTTIE_CTRL_PLAY | LV_RLOTTIE_CTRL_LOOP;
rlottie->dest_frame = rlottie->total_frames; /* invalid destination frame so it's possible to pause on frame 0 */
rlottie->task = lv_timer_create(next_frame_task_cb, 1000 / rlottie->framerate, obj);
lv_obj_update_layout(obj);
}
static void lv_rlottie_destructor(const lv_obj_class_t * class_p, lv_obj_t * obj)
{
LV_UNUSED(class_p);
lv_rlottie_t * rlottie = (lv_rlottie_t *) obj;
if(rlottie->animation) {
lottie_animation_destroy(rlottie->animation);
rlottie->animation = 0;
rlottie->current_frame = 0;
rlottie->framerate = 0;
rlottie->scanline_width = 0;
rlottie->total_frames = 0;
}
if(rlottie->task) {
lv_timer_del(rlottie->task);
rlottie->task = NULL;
rlottie->play_ctrl = LV_RLOTTIE_CTRL_FORWARD;
rlottie->dest_frame = 0;
}
lv_img_cache_invalidate_src(&rlottie->imgdsc);
if(rlottie->allocated_buf) {
lv_mem_free(rlottie->allocated_buf);
rlottie->allocated_buf = NULL;
rlottie->allocated_buffer_size = 0;
}
}
#if LV_COLOR_DEPTH == 16
static void convert_to_rgba5658(uint32_t * pix, const size_t width, const size_t height)
{
/* rlottie draws in ARGB32 format, but LVGL only deal with RGB565 format with (optional 8 bit alpha channel)
so convert in place here the received buffer to LVGL format. */
uint8_t * dest = (uint8_t *)pix;
uint32_t * src = pix;
for(size_t y = 0; y < height; y++) {
/* Convert a 4 bytes per pixel in format ARGB to R5G6B5A8 format
naive way:
r = ((c & 0xFF0000) >> 19)
g = ((c & 0xFF00) >> 10)
b = ((c & 0xFF) >> 3)
rgb565 = (r << 11) | (g << 5) | b
a = c >> 24;
That's 3 mask, 6 bitshift and 2 or operations
A bit better:
r = ((c & 0xF80000) >> 8)
g = ((c & 0xFC00) >> 5)
b = ((c & 0xFF) >> 3)
rgb565 = r | g | b
a = c >> 24;
That's 3 mask, 3 bitshifts and 2 or operations */
for(size_t x = 0; x < width; x++) {
uint32_t in = src[x];
#if LV_COLOR_16_SWAP == 0
uint16_t r = (uint16_t)(((in & 0xF80000) >> 8) | ((in & 0xFC00) >> 5) | ((in & 0xFF) >> 3));
#else
/* We want: rrrr rrrr GGGg gggg bbbb bbbb => gggb bbbb rrrr rGGG */
uint16_t r = (uint16_t)(((in & 0xF80000) >> 16) | ((in & 0xFC00) >> 13) | ((in & 0x1C00) << 3) | ((in & 0xF8) << 5));
#endif
lv_memcpy(dest, &r, sizeof(r));
dest[sizeof(r)] = (uint8_t)(in >> 24);
dest += LV_IMG_PX_SIZE_ALPHA_BYTE;
}
src += width;
}
}
#endif
static void next_frame_task_cb(lv_timer_t * t)
{
lv_obj_t * obj = t->user_data;
lv_rlottie_t * rlottie = (lv_rlottie_t *) obj;
if((rlottie->play_ctrl & LV_RLOTTIE_CTRL_PAUSE) == LV_RLOTTIE_CTRL_PAUSE) {
if(rlottie->current_frame == rlottie->dest_frame) {
/* Pause the timer too when it has run once to avoid CPU consumption */
lv_timer_pause(t);
return;
}
rlottie->dest_frame = rlottie->current_frame;
}
else {
if((rlottie->play_ctrl & LV_RLOTTIE_CTRL_BACKWARD) == LV_RLOTTIE_CTRL_BACKWARD) {
if(rlottie->current_frame > 0)
--rlottie->current_frame;
else { /* Looping ? */
if((rlottie->play_ctrl & LV_RLOTTIE_CTRL_LOOP) == LV_RLOTTIE_CTRL_LOOP)
rlottie->current_frame = rlottie->total_frames - 1;
else {
lv_event_send(obj, LV_EVENT_READY, NULL);
lv_timer_pause(t);
return;
}
}
}
else {
if(rlottie->current_frame < rlottie->total_frames)
++rlottie->current_frame;
else { /* Looping ? */
if((rlottie->play_ctrl & LV_RLOTTIE_CTRL_LOOP) == LV_RLOTTIE_CTRL_LOOP)
rlottie->current_frame = 0;
else {
lv_event_send(obj, LV_EVENT_READY, NULL);
lv_timer_pause(t);
return;
}
}
}
}
lottie_animation_render(
rlottie->animation,
rlottie->current_frame,
rlottie->allocated_buf,
rlottie->imgdsc.header.w,
rlottie->imgdsc.header.h,
rlottie->scanline_width
);
#if LV_COLOR_DEPTH == 16
convert_to_rgba5658(rlottie->allocated_buf, rlottie->imgdsc.header.w, rlottie->imgdsc.header.h);
#endif
lv_obj_invalidate(obj);
}
#endif /*LV_USE_RLOTTIE*/
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