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feat(draw): add lv_draw_layer_alloc_buf()

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Gabor Kiss-Vamosi
2023-08-25 22:57:35 +02:00
parent 45ff2a663b
commit 7899f77ee9
3 changed files with 29 additions and 22 deletions
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26
src/draw/lv_draw.c
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@@ -319,10 +319,30 @@ void lv_draw_layer_get_area(lv_layer_t * layer, lv_area_t * area)
lv_area_move(area, layer->draw_buf_ofs.x, layer->draw_buf_ofs.y);
}
void lv_draw_add_used_layer_size(uint32_t kb)
void * lv_draw_layer_alloc_buf(lv_layer_t * layer)
{
_draw_cache.used_memory_for_layers_kb += kb;
LV_LOG_INFO("Layer memory used: %d kB\n", _draw_cache.used_memory_for_layers_kb);
/*If the buffer of the layer is not allocated yet, allocate it now*/
if(lv_draw_buf_get_buf(&layer->draw_buf) == NULL) {
uint32_t layer_size_byte = layer->draw_buf.height * lv_draw_buf_width_to_stride(layer->draw_buf.width,
layer->draw_buf.color_format);
lv_draw_buf_malloc(&layer->draw_buf);
if(lv_draw_buf_get_buf(&layer->draw_buf) == NULL) {
LV_LOG_WARN("Allocating %"LV_PRIu32" bytes of layer buffer failed. Try later", layer_size_byte);
return NULL;
}
uint32_t kb = layer_size_byte < 1024 ? 1 : layer_size_byte >> 10;
_draw_cache.used_memory_for_layers_kb += kb;
LV_LOG_INFO("Layer memory used: %d kB\n", _draw_cache.used_memory_for_layers_kb);
if(lv_color_format_has_alpha(layer->draw_buf.color_format)) {
lv_draw_buf_clear(&layer->draw_buf, NULL);
}
}
return lv_draw_buf_get_buf(&layer->draw_buf);
}