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feat(draw_buf): support indexed image in draw_buf_copy (#5686)

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Signed-off-by: Xu Xingliang <xuxingliang@xiaomi.com>
This commit is contained in:
Neo Xu
2024-03-04 01:56:45 +08:00
committed by GitHub
parent 745ef50e65
commit f797a89a4b
1 changed files with 21 additions and 7 deletions
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src/draw/lv_draw_buf.c
+21 -7
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@@ -121,9 +121,20 @@ void lv_draw_buf_copy(lv_draw_buf_t * dest, const lv_area_t * dest_area,
uint8_t * src_bufc;
int32_t line_width;
/*Source and dest color format must be same. Color conversion is not supported yet.*/
LV_ASSERT_FORMAT_MSG(dest->header.cf == src->header.cf, "Color format mismatch: %d != %d",
dest->header.cf, src->header.cf);
if(dest_area == NULL) line_width = dest->header.w;
else line_width = lv_area_get_width(dest_area);
/* For indexed image, copy the palette if we are copying full image area*/
if(dest_area == NULL || src_area == NULL) {
if(LV_COLOR_FORMAT_IS_INDEXED(dest->header.cf)) {
lv_memcpy(dest->data, src->data, LV_COLOR_INDEXED_PALETTE_SIZE(dest->header.cf) * sizeof(lv_color32_t));
}
}
/*Check source and dest area have same width*/
if((src_area == NULL && line_width != src->header.w) || \
(src_area != NULL && line_width != lv_area_get_width(src_area))) {
@@ -132,10 +143,10 @@ void lv_draw_buf_copy(lv_draw_buf_t * dest, const lv_area_t * dest_area,
}
if(src_area) src_bufc = lv_draw_buf_goto_xy(src, src_area->x1, src_area->y1);
else src_bufc = src->data;
else src_bufc = lv_draw_buf_goto_xy(src, 0, 0);
if(dest_area) dest_bufc = lv_draw_buf_goto_xy(dest, dest_area->x1, dest_area->y1);
else dest_bufc = dest->data;
else dest_bufc = lv_draw_buf_goto_xy(dest, 0, 0);
int32_t start_y, end_y;
if(dest_area) {
@@ -149,10 +160,10 @@ void lv_draw_buf_copy(lv_draw_buf_t * dest, const lv_area_t * dest_area,
uint32_t dest_stride = dest->header.stride;
uint32_t src_stride = src->header.stride;
line_width *= lv_color_format_get_size(dest->header.cf); /*Pixel to bytes*/
uint32_t line_bytes = (line_width * lv_color_format_get_bpp(dest->header.cf) + 7) >> 3;
for(; start_y <= end_y; start_y++) {
lv_memcpy(dest_bufc, src_bufc, line_width);
lv_memcpy(dest_bufc, src_bufc, line_bytes);
dest_bufc += dest_stride;
src_bufc += src_stride;
}
@@ -279,10 +290,13 @@ void * lv_draw_buf_goto_xy(const lv_draw_buf_t * buf, uint32_t x, uint32_t y)
LV_ASSERT_NULL(buf);
if(buf == NULL) return NULL;
uint8_t * data = buf->data + buf->header.stride * y;
uint8_t * data = buf->data;
if(x == 0)
return data;
/*Skip palette*/
data += LV_COLOR_INDEXED_PALETTE_SIZE(buf->header.cf) * sizeof(lv_color32_t);
data += buf->header.stride * y;
if(x == 0) return data;
return data + x * lv_color_format_get_size(buf->header.cf);
}