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perf(qrcode): improve drawing speed (#6475)

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Signed-off-by: pengyiqiang <pengyiqiang@xiaomi.com>
Co-authored-by: pengyiqiang <pengyiqiang@xiaomi.com>
This commit is contained in:
VIFEX
2024-07-10 01:40:45 +08:00
committed by GitHub
parent d12f88fd95
commit 3e64984ddf
1 changed files with 19 additions and 9 deletions
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26
src/libs/qrcode/lv_qrcode.c
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@@ -70,7 +70,7 @@ void lv_qrcode_set_size(lv_obj_t * obj, int32_t size)
LV_LOG_INFO("set canvas buffer: %p, size = %d", (void *)new_buf, (int)size);
/*Clear canvas buffer*/
lv_canvas_fill_bg(obj, lv_color_white(), LV_OPA_COVER);
lv_draw_buf_clear(new_buf, NULL);
if(old_buf != NULL) lv_draw_buf_destroy(old_buf);
}
@@ -100,10 +100,12 @@ lv_result_t lv_qrcode_update(lv_obj_t * obj, const void * data, uint32_t data_le
return LV_RESULT_INVALID;
}
lv_canvas_set_palette(obj, 0, lv_color_to_32(qrcode->dark_color, 0xff));
lv_canvas_set_palette(obj, 1, lv_color_to_32(qrcode->light_color, 0xff));
lv_color_t c = lv_color_hex(1);
lv_canvas_fill_bg(obj, c, LV_OPA_COVER);
lv_draw_buf_clear(draw_buf, NULL);
lv_canvas_set_palette(obj, 0, lv_color_to_32(qrcode->light_color, LV_OPA_COVER));
lv_canvas_set_palette(obj, 1, lv_color_to_32(qrcode->dark_color, LV_OPA_COVER));
lv_image_cache_drop(draw_buf);
lv_obj_invalidate(obj);
if(data_len > qrcodegen_BUFFER_LEN_MAX) return LV_RESULT_INVALID;
@@ -140,12 +142,16 @@ lv_result_t lv_qrcode_update(lv_obj_t * obj, const void * data, uint32_t data_le
return LV_RESULT_INVALID;
}
/* Temporarily disable invalidation to improve the efficiency of lv_canvas_set_px */
lv_display_enable_invalidation(lv_obj_get_display(obj), false);
int32_t obj_w = draw_buf->header.w;
qr_size = qrcodegen_getSize(qr0);
scale = obj_w / qr_size;
int scaled = qr_size * scale;
int margin = (obj_w - scaled) / 2;
uint8_t * buf_u8 = (uint8_t *)draw_buf->data + 8; /*+8 skip the palette*/
lv_color_t c = lv_color_hex(1);
/* Copy the qr code canvas:
* A simple `lv_canvas_set_px` would work but it's slow for so many pixels.
@@ -163,15 +169,16 @@ lv_result_t lv_qrcode_update(lv_obj_t * obj, const void * data, uint32_t data_le
if(aligned == false && (x & 0x7) == 0) aligned = true;
if(aligned == false) {
c = lv_color_hex(a ? 0 : 1);
if(a) {
lv_canvas_set_px(obj, x, y, c, LV_OPA_COVER);
}
}
else {
if(!a) b |= (1 << (7 - p));
p++;
if(p == 8) {
uint32_t px = row_byte_cnt * y + (x >> 3);
buf_u8[px] = b;
buf_u8[px] = ~b;
b = 0;
p = 0;
}
@@ -184,7 +191,7 @@ lv_result_t lv_qrcode_update(lv_obj_t * obj, const void * data, uint32_t data_le
b |= (1 << (8 - p)) - 1;
uint32_t px = row_byte_cnt * y + (x >> 3);
buf_u8[px] = b;
buf_u8[px] = ~b;
}
/*The Qr is probably scaled so simply to the repeated rows*/
@@ -195,6 +202,9 @@ lv_result_t lv_qrcode_update(lv_obj_t * obj, const void * data, uint32_t data_le
}
}
/* invalidate the canvas to refresh it */
lv_display_enable_invalidation(lv_obj_get_display(obj), true);
lv_free(qr0);
lv_free(data_tmp);
return LV_RESULT_OK;