github-code/lvgl
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

feat(bin_decoder): post process decoded image to fulfill decoder's args (#5082)

Browse Source 
Signed-off-by: Xu Xingliang <xuxingliang@xiaomi.com>
This commit is contained in:
Neo Xu
2023-12-23 04:49:42 +08:00
committed by GitHub
parent 2fa9847201
commit 755810bf8e
10 changed files with 209 additions and 41 deletions
Download Patch File Download Diff File Expand all files Collapse all files

89
src/draw/lv_draw_buf.c
View File

@@ -166,7 +166,7 @@ lv_draw_buf_t * lv_draw_buf_create(uint32_t w, uint32_t h, lv_color_format_t cf,
draw_buf->header.w = w;
draw_buf->header.h = h;
draw_buf->header.cf = cf;
draw_buf->header.flags = LV_IMAGE_FLAGS_MODIFIABLE;
draw_buf->header.flags = LV_IMAGE_FLAGS_MODIFIABLE | LV_IMAGE_FLAGS_ALLOCATED;
draw_buf->header.stride = stride;
draw_buf->data = lv_draw_buf_align(buf, cf);
draw_buf->unaligned_data = buf;
@@ -174,14 +174,32 @@ lv_draw_buf_t * lv_draw_buf_create(uint32_t w, uint32_t h, lv_color_format_t cf,
return draw_buf;
}
lv_draw_buf_t * lv_draw_buf_dup(const lv_draw_buf_t * draw_buf)
{
const lv_image_header_t * header = &draw_buf->header;
lv_draw_buf_t * new_buf = lv_draw_buf_create(header->w, header->h, header->cf, header->stride);
if(new_buf == NULL) return NULL;
/*Choose the smaller size to copy*/
uint32_t size = LV_MIN(draw_buf->data_size, new_buf->data_size);
/*Copy image data*/
lv_memcpy(new_buf->data, draw_buf->data, size);
return new_buf;
}
void lv_draw_buf_destroy(lv_draw_buf_t * buf)
{
LV_ASSERT_NULL(buf);
if(buf == NULL) return;
if(buf->header.flags & LV_IMAGE_FLAGS_MODIFIABLE)
lv_draw_buf_free(buf->unaligned_data);
lv_free(buf);
if(buf->header.flags & LV_IMAGE_FLAGS_ALLOCATED) {
lv_draw_buf_free(buf->unaligned_data);
lv_free(buf);
}
else {
LV_LOG_ERROR("draw buffer is not allocated, ignored");
}
}
void * lv_draw_buf_goto_xy(lv_draw_buf_t * buf, uint32_t x, uint32_t y)
@@ -230,6 +248,69 @@ lv_draw_buf_t * lv_draw_buf_adjust_stride(const lv_draw_buf_t * src, uint32_t st
return dst;
}
lv_result_t lv_draw_buf_premultiply(lv_draw_buf_t * draw_buf)
{
LV_ASSERT_NULL(draw_buf);
if(draw_buf == NULL) return LV_RESULT_INVALID;
if(draw_buf->header.flags & LV_IMAGE_FLAGS_PREMULTIPLIED) return LV_RESULT_INVALID;
if((draw_buf->header.flags & LV_IMAGE_FLAGS_MODIFIABLE) == 0) {
LV_LOG_WARN("draw buf is not modifiable: 0x%04x", draw_buf->header.flags);
return LV_RESULT_INVALID;
}
/*Premultiply color with alpha, do case by case by judging color format*/
lv_color_format_t cf = draw_buf->header.cf;
if(LV_COLOR_FORMAT_IS_INDEXED(cf)) {
int size = LV_COLOR_INDEXED_PALETTE_SIZE(cf);
lv_color32_t * palette = (lv_color32_t *)draw_buf->data;
for(int i = 0; i < size; i++) {
lv_color_premultiply(&palette[i]);
}
}
else if(cf == LV_COLOR_FORMAT_ARGB8888) {
uint32_t h = draw_buf->header.h;
uint32_t w = draw_buf->header.w;
uint32_t stride = draw_buf->header.stride;
uint8_t * line = (uint8_t *)draw_buf->data;
for(uint32_t y = 0; y < h; y++) {
lv_color32_t * pixel = (lv_color32_t *)line;
for(uint32_t x = 0; x < w; x++) {
lv_color_premultiply(pixel);
pixel++;
}
line += stride;
}
}
else if(cf == LV_COLOR_FORMAT_RGB565A8) {
uint32_t h = draw_buf->header.h;
uint32_t w = draw_buf->header.w;
uint32_t stride = draw_buf->header.stride;
uint32_t alpha_stride = stride / 2;
uint8_t * line = (uint8_t *)draw_buf->data;
lv_opa_t * alpha = (lv_opa_t *)(line + stride * h);
for(uint32_t y = 0; y < h; y++) {
lv_color16_t * pixel = (lv_color16_t *)line;
for(uint32_t x = 0; x < w; x++) {
lv_color16_premultiply(pixel, alpha[x]);
pixel++;
}
line += stride;
alpha += alpha_stride;
}
}
else if(LV_COLOR_FORMAT_IS_ALPHA_ONLY(cf)) {
/*Pass*/
}
else {
LV_LOG_WARN("draw buf has no alpha, cf: %d", cf);
}
draw_buf->header.flags |= LV_IMAGE_FLAGS_PREMULTIPLIED;
return LV_RESULT_OK;
}
/**********************
* STATIC FUNCTIONS
**********************/