Screenshot app & service (#42)
- Added screenshot app & service (PC-only for now) - Updated docs with screenshots and new device photo - Add fake statusbar icons for PC/sim build - added `lv_screenshot` library based on `lv_100ask_screenshot` from https://github.com/100askTeam/lv_lib_100ask - T-Deck WiFi is now allocated into SPI RAM - Created `tt_service_find()` to find services by their id
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Ken Van Hoeylandt
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GitHub
GitHub
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0bdc4bd32f
commit
3250943345
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#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_img_dsc_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_img_cf_t cf, lv_100ask_screenshot_sv_t screenshot_sv, const char* filename) {
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lv_img_dsc_t* snapshot = lv_snapshot_take(obj, cf);
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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, snapshot->header.w, snapshot->header.h, 24, filename);
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} else if (LV_COLOR_DEPTH == 32) {
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lv_screenshot_save_png_file(snapshot->data, snapshot->header.w, snapshot->header.h, 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, snapshot->header.w, snapshot->header.h, 24, filename);
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} else if (LV_COLOR_DEPTH == 32) {
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lve_screenshot_save_bmp_file(snapshot->data, snapshot->header.w, snapshot->header.h, 32, filename);
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}
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}
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lv_snapshot_free(snapshot);
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return true;
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}
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return false;
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}
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static void data_pre_processing(lv_img_dsc_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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@@ -0,0 +1,21 @@
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#pragma once
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#include "lvgl.h"
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#include <stdbool.h>
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#ifdef __cplusplus
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extern "C" {
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#endif
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typedef enum {
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LV_100ASK_SCREENSHOT_SV_BMP = 0,
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LV_100ASK_SCREENSHOT_SV_PNG = 1,
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LV_100ASK_SCREENSHOT_SV_LAST
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} lv_100ask_screenshot_sv_t;
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bool lv_screenshot_create(lv_obj_t* obj, lv_img_cf_t cf, lv_100ask_screenshot_sv_t screenshot_sv, const char* filename);
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#ifdef __cplusplus
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} /*extern "C"*/
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#endif
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#include "save_bmp.h"
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typedef struct tagBITMAPFILEHEADER {
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uint16_t bfType;
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uint32_t bfSize;
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uint16_t bfReserved1;
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uint16_t bfReserved2;
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uint32_t bfOffBits;
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} __attribute__((packed)) BITMAPFILEHEADER, *PBITMAPFILEHEADER;
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typedef struct tagBITMAPINFOHEADER {
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uint32_t biSize;
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uint32_t biwidth;
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uint32_t biheight;
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uint16_t biPlanes;
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uint16_t biBitCount;
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uint32_t biCompression;
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uint32_t biSizeImage;
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uint32_t biXPelsPerMeter;
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uint32_t biYPelsPerMeter;
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uint32_t biClrUsed;
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uint32_t biClrImportant;
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} __attribute__((packed)) BITMAPINFOHEADER, *PBITMAPINFOHEADER;
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typedef struct tagRGBQUAD {
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uint8_t rgbBlue;
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uint8_t rgbGreen;
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uint8_t rgbRed;
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uint8_t rgbReserved;
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} __attribute__((packed)) RGBQUAD;
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bool lve_screenshot_save_bmp_file(const uint8_t* image, uint32_t w, uint32_t h, uint32_t bpp, const char* filename) {
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BITMAPFILEHEADER tBmpFileHead;
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BITMAPINFOHEADER tBmpInfoHead;
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uint32_t dwSize;
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uint32_t bw;
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lv_fs_file_t f;
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memset(&tBmpFileHead, 0, sizeof(BITMAPFILEHEADER));
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memset(&tBmpInfoHead, 0, sizeof(BITMAPINFOHEADER));
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lv_fs_res_t res = lv_fs_open(&f, filename, LV_FS_MODE_WR);
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if (res != LV_FS_RES_OK) {
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LV_LOG_USER("Can't create output file %s", filename);
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return false;
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}
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tBmpFileHead.bfType = 0x4d42;
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tBmpFileHead.bfSize = 0x36 + w * h * (bpp / 8);
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tBmpFileHead.bfOffBits = 0x00000036;
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tBmpInfoHead.biSize = 0x00000028;
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tBmpInfoHead.biwidth = w;
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tBmpInfoHead.biheight = h;
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tBmpInfoHead.biPlanes = 0x0001;
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tBmpInfoHead.biBitCount = bpp;
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tBmpInfoHead.biCompression = 0;
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tBmpInfoHead.biSizeImage = w * h * (bpp / 8);
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tBmpInfoHead.biXPelsPerMeter = 0;
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tBmpInfoHead.biYPelsPerMeter = 0;
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tBmpInfoHead.biClrUsed = 0;
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tBmpInfoHead.biClrImportant = 0;
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res = lv_fs_write(&f, &tBmpFileHead, sizeof(tBmpFileHead), &bw);
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if (bw != sizeof(tBmpFileHead)) {
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LV_LOG_USER("Can't write BMP File Head to %s", filename);
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return false;
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}
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res = lv_fs_write(&f, &tBmpInfoHead, sizeof(tBmpInfoHead), &bw);
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if (bw != sizeof(tBmpInfoHead)) {
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LV_LOG_USER("Can't write BMP File Info Head to %s", filename);
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return false;
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}
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dwSize = w * bpp / 8;
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const uint8_t* pPos = image + (h - 1) * dwSize;
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while (pPos >= image) {
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res = lv_fs_write(&f, pPos, dwSize, &bw);
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if (bw != dwSize) {
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LV_LOG_USER("Can't write date to BMP File %s", filename);
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return false;
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}
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pPos -= dwSize;
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}
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lv_fs_close(&f);
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return true;
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}
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@@ -0,0 +1,11 @@
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#include "save_png.h"
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#include "src/extra/libs/png/lodepng.h"
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bool lv_screenshot_save_png_file(const uint8_t* image, uint32_t w, uint32_t h, uint32_t bpp, const char* filename) {
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if (bpp == 32) {
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return lodepng_encode32_file(filename, image, w, h);
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} else if (bpp == 24) {
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return lodepng_encode24_file(filename, image, w, h);
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}
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return false;
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}
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