Ken Van Hoeylandt
a8a664703b
- update lvgl to v9.2.0 - update esp_lvgl_port to v2.3.3 - various code correctness improvements
71 lines
3.0 KiB
C
71 lines
3.0 KiB
C
#include "lv_screenshot.h"
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#include "save_bmp.h"
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#include "save_png.h"
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static void data_pre_processing(lv_draw_buf_t* snapshot, uint16_t bpp, lv_100ask_screenshot_sv_t screenshot_sv);
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bool lv_screenshot_create(lv_obj_t* obj, lv_color_format_t cf, lv_100ask_screenshot_sv_t screenshot_sv, const char* filename) {
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lv_draw_buf_t* snapshot = lv_snapshot_take(obj, cf);
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int32_t width = lv_obj_get_width(obj);
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int32_t height = lv_obj_get_height(obj);
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if (snapshot) {
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data_pre_processing(snapshot, LV_COLOR_DEPTH, screenshot_sv);
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if (screenshot_sv == LV_100ASK_SCREENSHOT_SV_PNG) {
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if (LV_COLOR_DEPTH == 16) {
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lv_screenshot_save_png_file(snapshot->data, width, height, 24, filename);
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} else if (LV_COLOR_DEPTH == 32) {
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lv_screenshot_save_png_file(snapshot->data, width, height, 32, filename);
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}
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} else if (screenshot_sv == LV_100ASK_SCREENSHOT_SV_BMP) {
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if (LV_COLOR_DEPTH == 16) {
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lve_screenshot_save_bmp_file(snapshot->data, width, height, 24, filename);
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} else if (LV_COLOR_DEPTH == 32) {
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lve_screenshot_save_bmp_file(snapshot->data, width, height, 32, filename);
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}
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}
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return true;
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}
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lv_draw_buf_destroy(snapshot);
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return false;
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}
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static void data_pre_processing(lv_draw_buf_t* snapshot, uint16_t bpp, lv_100ask_screenshot_sv_t screenshot_sv) {
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if (bpp == 16) {
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uint16_t rgb565_data = 0;
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uint32_t count = 0;
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for (int w = 0; w < snapshot->header.w; w++) {
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for (int h = 0; h < snapshot->header.h; h++) {
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rgb565_data = (uint16_t)((*(uint8_t*)(snapshot->data + count + 1) << 8) | *(uint8_t*)(snapshot->data + count));
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if (screenshot_sv == LV_100ASK_SCREENSHOT_SV_PNG) {
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*(uint8_t*)(snapshot->data + count) = (uint8_t)(((rgb565_data) >> 11) << 3);
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*(uint8_t*)(snapshot->data + count + 1) = (uint8_t)(((rgb565_data) >> 5) << 2);
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*(uint8_t*)(snapshot->data + count + 2) = (uint8_t)(((rgb565_data) >> 0) << 3);
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} else if (screenshot_sv == LV_100ASK_SCREENSHOT_SV_BMP) {
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*(uint8_t*)(snapshot->data + count) = (uint8_t)(((rgb565_data) >> 0) << 3);
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*(uint8_t*)(snapshot->data + count + 1) = (uint8_t)(((rgb565_data) >> 5) << 2);
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*(uint8_t*)(snapshot->data + count + 2) = (uint8_t)(((rgb565_data) >> 11) << 3);
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}
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count += 3;
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}
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}
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} else if ((screenshot_sv == LV_100ASK_SCREENSHOT_SV_PNG) && (bpp == 32)) {
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uint8_t tmp_data = 0;
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uint32_t count = 0;
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for (int w = 0; w < snapshot->header.w; w++) {
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for (int h = 0; h < snapshot->header.h; h++) {
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tmp_data = *(snapshot->data + count);
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*(uint8_t*)(snapshot->data + count) = *(snapshot->data + count + 2);
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*(uint8_t*)(snapshot->data + count + 2) = tmp_data;
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count += 4;
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}
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}
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}
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}
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