108 lines
3.0 KiB
Python
108 lines
3.0 KiB
Python
import time
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import os
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import io
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from typing import Tuple
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import subprocess
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from hashlib import sha512
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from PIL import Image
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from pillow_heif import register_heif_opener
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import ffmpeg
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from utils.const import FILE_MINE_TYPE, TMP_DIR
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from utils.tbProcessor import easyExceptionHandler
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register_heif_opener()
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def image_conventer(filename:str, binary: bytes) -> int:
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try:
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fio = io.BytesIO(binary)
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img:Image.Image = Image.open(fio)
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img = img.convert("RGB")
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img.save(filename, "JPEG", quality=95)
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return 0
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except Exception as e:
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easyExceptionHandler(e)
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return 1
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def read_output(pipe, q):
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""" 用於非阻塞讀取 ffmpeg 的 stdout """
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while True:
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data = pipe.read(4096)
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if not data:
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break
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q.put(data)
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q.put(None) # 標記輸出結束
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def video_conventor(filename:str, oriFormat:str, binary:bytes) -> int:
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try:
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tmpfile = filename+"_tmp"
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# write to tempfile
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with open(tmpfile, "wb") as f:
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f.write(binary)
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# ffmpeg process
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process:subprocess.Popen = (
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ffmpeg
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.input(tmpfile, format=oriFormat)
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.output(filename, format='mp4')
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.run_async(pipe_stdin=True, pipe_stdout=True, pipe_stderr=True)
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)
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process.wait()
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# remove tempfile
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os.remove(tmpfile)
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return 0
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except Exception as e:
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easyExceptionHandler(e)
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return 1
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def file_writer(filename:str, binary:bytes):
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with open(filename, "wb") as f:
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f.write(binary)
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def file_saver(ftype:str, binary:bytes) -> Tuple[str, int]:
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"""
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ftype -> minetype
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binary -> file binary
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"""
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# 獲取副檔名
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ext = None
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for t in FILE_MINE_TYPE:
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if t == ftype:
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ext = FILE_MINE_TYPE[t]
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if ext is None:
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return "Invalid file type", 1
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# 如果不是 IG 本身支援的檔案 -> 轉檔
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filename = sha512( str(time.time()).encode() ).hexdigest() # 暫存檔名稱
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opt = "" # output file name
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if not ( ftype == "image/jpg" or ftype == "image/webp" or \
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ftype == "video/mp4" ):
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# 轉圖片
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if ftype.startswith("image"):
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opt = os.path.abspath(os.path.join(TMP_DIR, filename+".jpg"))
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err = image_conventer(opt, binary)
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if err: # 發生錯誤
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return "File convert error", 1
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# 轉影片
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elif ftype.startswith("video"):
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opt = os.path.abspath(os.path.join(TMP_DIR, filename+".mp4"))
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err = video_conventor(opt, ext, binary)
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if err:
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return "File convert error", 1
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# 轉檔完成
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return opt, 0
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else: # 如果是 IG 本身支援的檔案 -> 存檔
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opt = os.path.abspath(os.path.join(TMP_DIR, filename+"."+ext))
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file_writer(opt, binary)
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return opt, 0
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