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139 lines
3.5 KiB
Python
139 lines
3.5 KiB
Python
##################################################################
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# sjpeg converter script version 1.0
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# Dependencies: (PYTHON-3)
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##################################################################
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SJPG_FILE_FORMAT_VERSION = "V1.00" #
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JPEG_SPLIT_HEIGHT = 16
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##################################################################
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import math, os, sys, time
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from PIL import Image
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OUTPUT_FILE_NAME = ""
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INPUT_FILE = ""
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if len(sys.argv) == 2:
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INPUT_FILE = sys.argv[1]
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OUTPUT_FILE_NAME = INPUT_FILE.split("/")[-1].split("\\")[-1].split(".")[0]
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else:
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print("usage:\n\t python " + sys.argv[0] + " input_file.jpg")
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sys.exit(0)
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try:
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im = Image.open(INPUT_FILE)
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except:
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print("\nFile not found!")
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sys.exit(0)
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print("\nConversion started...\n")
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start_time = time.time()
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width, height = im.size
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print("Input:")
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print("\t" + INPUT_FILE)
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print("\tRES = " + str(width) + " x " + str(height) + '\n')
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lenbuf = []
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block_size = JPEG_SPLIT_HEIGHT;
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spilts = math.ceil(height/block_size)
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c_code = '''//LVGL SJPG C ARRAY\n#include "lvgl/lvgl.h"\n\nconst uint8_t ''' + OUTPUT_FILE_NAME + '''_map[] = {\n'''
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sjpeg_data = bytearray()
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sjpeg = bytearray()
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row_remaining = height;
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for i in range(spilts):
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if row_remaining < block_size:
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crop = im.crop((0, i*block_size, width, row_remaining + i*block_size))
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else:
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crop = im.crop((0, i*block_size, width, block_size + i*block_size))
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row_remaining = row_remaining - block_size;
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crop.save(str(i)+".jpg", quality=90)
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for i in range(spilts):
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f = open(str(i)+".jpg", "rb")
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a = f.read()
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f.close()
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sjpeg_data = sjpeg_data + a
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lenbuf.append(len(a))
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header = bytearray()
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#4 BYTES
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header = header + bytearray("_SJPG__".encode("UTF-8"));
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#6 BYTES VERSION
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header = header + bytearray(("\x00" + SJPG_FILE_FORMAT_VERSION + "\x00").encode("UTF-8"));
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#WIDTH 2 BYTES
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header = header + width.to_bytes(2, byteorder='little');
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#HEIGHT 2 BYTES
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header = header + height.to_bytes(2, byteorder='little');
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#NUMBER OF ITEMS 2 BYTES
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header = header + spilts.to_bytes(2, byteorder='little');
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#NUMBER OF ITEMS 2 BYTES
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header = header + int(JPEG_SPLIT_HEIGHT).to_bytes(2, byteorder='little');
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for item_len in lenbuf:
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# WIDTH 2 BYTES
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header = header + item_len.to_bytes(2, byteorder='little');
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data = bytearray()
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sjpeg = header + sjpeg_data;
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if 1:
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for i in range(len(lenbuf)):
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os.remove(str(i) + ".jpg")
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f = open(OUTPUT_FILE_NAME+".sjpg","wb");
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f.write(sjpeg)
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f.close()
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new_line_threshold = 0
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for i in range(len(sjpeg)):
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c_code = c_code + "\t" + str(hex(sjpeg[i])) + ","
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new_line_threshold = new_line_threshold + 1
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if (new_line_threshold >= 16):
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c_code = c_code + "\n"
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new_line_threshold = 0
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c_code = c_code + "\n};\n\nlv_img_dsc_t "
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c_code = c_code + OUTPUT_FILE_NAME + " = {\n"
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c_code = c_code + "\t.header.always_zero = 0,\n"
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c_code = c_code + "\t.header.w = " + str(width) + ",\n"
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c_code = c_code + "\t.header.h = " + str(height) + ",\n"
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c_code = c_code + "\t.data_size = " + str(len(sjpeg)) + ",\n"
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c_code = c_code + "\t.header.cf = LV_IMG_CF_RAW,\n"
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c_code = c_code + "\t.data = " + OUTPUT_FILE_NAME+"_map" + ",\n};"
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f = open(OUTPUT_FILE_NAME + '.c', 'w')
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f.write(c_code)
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f.close()
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time_taken = (time.time() - start_time)
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print("Output:")
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print("\tTime taken = " + str(round(time_taken,2)) + " sec")
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print("\tbin size = " + str(round(len(sjpeg)/1024, 1)) + " KB" )
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print("\t" + OUTPUT_FILE_NAME + ".sjpg\t(bin file)" + "\n\t" + OUTPUT_FILE_NAME + ".c\t\t(c array)")
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print("\nAll good!")
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