Here is an example of how to save pic as JPEG or PNG via libjpeg or libpng.<\/p>\n
int imgwrp_jpeg_quality = 100;\n\nint YUYV_to_JPG(uint8_t* yuvData, int imgWidth, int imgHeight)\n{\n int retval = 0;\n\n \/* ===== open file ===== *\/\n FILE* fp;\n fp = fopen("img.jpg", "wb");\n if (!fp)\n {\n retval = 1;\n perror("RGB24_to_JPG(): open file");\n goto out_return;\n }\n\n \/* ===== jpg init ===== *\/\n JSAMPROW row_pointer[1];\n struct jpeg_compress_struct cinfo;\n struct jpeg_error_mgr jerr;\n\n cinfo.err = jpeg_std_error(&jerr); \/\/ init error info first\n jpeg_create_compress(&cinfo);\n jpeg_stdio_dest(&cinfo, fp);\n\n \/* ===== img setting ===== *\/\n cinfo.image_width = imgWidth;\n cinfo.image_height = imgHeight;\n cinfo.input_components = 3; \/\/ color components for each pixel\n cinfo.in_color_space = JCS_YCbCr;\n\n jpeg_set_defaults(&cinfo);\n jpeg_set_quality(&cinfo, imgwrp_jpeg_quality, FALSE);\n jpeg_start_compress(&cinfo, TRUE);\n\n \/* ===== write data ===== *\/\n uint8_t* buf = (uint8_t*)malloc(sizeof(uint8_t) * imgWidth * 3);\n while (cinfo.next_scanline < cinfo.image_height) \n { \n for (int i = 0; i < cinfo.image_width; i += 2) \n { \n buf[i*3] = yuvData[i*2]; \n buf[i*3+1] = yuvData[i*2+1]; \n buf[i*3+2] = yuvData[i*2+3]; \n buf[i*3+3] = yuvData[i*2+2]; \n buf[i*3+4] = yuvData[i*2+1]; \n buf[i*3+5] = yuvData[i*2+3]; \n } \n row_pointer[0] = buf; \n yuvData += imgWidth * 2; \n jpeg_write_scanlines(&cinfo, row_pointer, 1); \n }\n jpeg_finish_compress(&cinfo);\n jpeg_destroy_compress(&cinfo);\n free(buf);\n\nout_close_fp:\n if (fp) fclose(fp);\n\nout_return:\n return retval;\n}<\/code><\/pre>\n\u00a72 PNG<\/h2>\nint RGB24_to_PNG(uint8_t* rgbData, int imgWidth, int imgHeight)\n{\n int retval = 0;\n\n \/* ===== open file ===== *\/\n FILE* fp;\n fp = fopen("img.png", "wb");\n if (!fp)\n {\n retval = 1;\n perror("RGB24_to_PNG(): open file");\n goto out_return;\n }\n\n \/* ===== png struct ===== *\/\n png_structp png_ptr = png_create_write_struct(PNG_LIBPNG_VER_STRING, NULL, NULL, NULL);\n png_infop info_ptr = png_create_info_struct(png_ptr);\n if (!png_ptr || !info_ptr)\n {\n retval = 2;\n perror("RGB24_to_PNG(): png init");\n goto out_close_fp;\n }\n\n \/* ===== io init ===== *\/\n png_init_io(png_ptr, fp);\n png_set_IHDR(png_ptr, info_ptr, imgWidth, imgHeight, 8, PNG_COLOR_TYPE_RGB,\n PNG_INTERLACE_NONE, PNG_COMPRESSION_TYPE_BASE, PNG_FILTER_TYPE_BASE);\n png_write_info(png_ptr, info_ptr);\n png_set_packing(png_ptr);\n\n \/* ===== write data ===== *\/\n uint8_t* rowData = (uint8_t*)malloc(sizeof(uint8_t) * imgWidth * 3);\n int rgbIdx = 0;\n \/\/ for i rows\n for (int i = 0; i < imgHeight; ++i)\n {\n \/\/ copy each row data\n for (int j = 0; j < imgWidth; ++j)\n {\n rowData[j * 3 + 0] = rgbData[rgbIdx++];\n rowData[j * 3 + 1] = rgbData[rgbIdx++];\n rowData[j * 3 + 2] = rgbData[rgbIdx++];\n }\n \/\/ write row\n png_write_row(png_ptr, rowData);\n }\n png_write_end(png_ptr, info_ptr);\n\nout_free:\n if (rowData) free(rowData);\n png_destroy_write_struct(&png_ptr, &info_ptr);\n\nout_close_fp:\n if (fp) fclose(fp);\n\nout_return:\n return retval;\n}<\/code><\/pre>\n","protected":false},"excerpt":{"rendered":" Here is an example of how to save pic as JPEG or PNG …<\/p>","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[54],"tags":[],"amp_enabled":true,"_links":{"self":[{"href":"https:\/\/swordofmorning.com\/index.php\/wp-json\/wp\/v2\/posts\/913"}],"collection":[{"href":"https:\/\/swordofmorning.com\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/swordofmorning.com\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/swordofmorning.com\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/swordofmorning.com\/index.php\/wp-json\/wp\/v2\/comments?post=913"}],"version-history":[{"count":1,"href":"https:\/\/swordofmorning.com\/index.php\/wp-json\/wp\/v2\/posts\/913\/revisions"}],"predecessor-version":[{"id":914,"href":"https:\/\/swordofmorning.com\/index.php\/wp-json\/wp\/v2\/posts\/913\/revisions\/914"}],"wp:attachment":[{"href":"https:\/\/swordofmorning.com\/index.php\/wp-json\/wp\/v2\/media?parent=913"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/swordofmorning.com\/index.php\/wp-json\/wp\/v2\/categories?post=913"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/swordofmorning.com\/index.php\/wp-json\/wp\/v2\/tags?post=913"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}