python蔡徐坤(源代码) |
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import sys import os import time import threading import CV2 import pyprind class CharFrame: ascii_char = "10 "#数字可自定义 # 像素映射到字符 def pixelToChar(self, luminance): return self.ascii_char[int(luminance / 256 * len(self.ascii_char))] # 将普通帧转为 ASCII 字符帧 def convert(self, img, limitSize=-1, fill=False, wrap=False): if limitSize != -1 and (img.shape[0] > limitSize[1] or img.shape[1] > limitSize[0]): img = CV2.resize(img, limitSize, interpolation=CV2.INTER_AREA) ascii_frame = '' blank = '' if fill: blank += ' ' * (limitSize[0] - img.shape[1]) if wrap: blank += '\n' for i in range(img.shape[0]): for j in range(img.shape[1]): ascii_frame += self.pixelToChar(img[i, j]) ascii_frame += blank return ascii_frame class V2Char(CharFrame): charVideo = [] timeInterval = 0.033 def __init__(self, path): if path.endswith('txt'): self.load(path) else: self.genCharVideo(path) def genCharVideo(self, filepath): self.charVideo = [] # 用opencv读取视频 cap = CV2.VideoCapture(filepath) self.timeInterval = round(1 / cap.get(5), 3) nf = int(cap.get(7)) print('Generate char video, please wait...') for i in pyprind.prog_bar(range(nf)): # 转换颜色空间,第二个参数是转换类型,CV2.COLOR_BGR2GRAY表示从BGR↔Gray rawFrame = CV2.cvtColor(cap.read()[1], CV2.COLOR_BGR2GRAY) frame = self.convert(rawFrame, os.get_terminal_size(), fill=True) self.charVideo.append(frame) cap.release() def export(self, filepath): if not self.charVideo: return with open(filepath, 'w') as f: for frame in self.charVideo: # 加一个换行符用以分隔每一帧 f.write(frame + '\n') def load(self, filepath): self.charVideo = [] # 一行即为一帧 for i in open(filepath): self.charVideo.append(i[:-1]) def play(self, stream=1): # Bug: # 光标定位转义编码不兼容 Windows if not self.charVideo: return if stream == 1 and os.isatty(sys.stdout.fileno()): self.streamOut = sys.stdout.write self.streamFlush = sys.stdout.flush elif stream == 2 and os.isatty(sys.stderr.fileno()): self.streamOut = sys.stderr.write self.streamFlush = sys.stderr.flush elif hasattr(stream, 'write'): self.streamOut = stream.write self.streamFlush = stream.flush breakflag = False def getChar(): nonlocal breakflag try: # 若系统为 windows 则直接调用 msvcrt.getch() import msvcrt except ImportError: import termios import tty # 获得标准输入的文件描述符 fd = sys.stdin.fileno() # 保存标准输入的属性 old_settings = termios.tcgetattr(fd) try: # 设置标准输入为原始模式 tty.setraw(sys.stdin.fileno()) # 读取一个字符 ch = sys.stdin.read(1) finally: # 恢复标准输入为原来的属性 termios.tcsetattr(fd, termios.TCSADRAIN, old_settings) if ch: breakflag = True else: if msvcrt.getch(): breakflag = True # 创建线程 getchar = threading.Thread(target=getChar) # 设置为守护线程 getchar.daemon = True # 启动守护线程 getchar.start() # 输出的字符画行数 rows = len(self.charVideo[0]) // os.get_terminal_size()[0] for frame in self.charVideo: # 接收到输入则退出循环 if breakflag: break self.streamOut(frame) self.streamFlush() time.sleep(self.timeInterval) # 共 rows 行,光标上移 rows-1 行回到开始处 self.streamOut('\033[{}A\r'.format(rows - 1)) # 光标下移 rows-1 行到最后一行,清空最后一行 self.streamOut('\033[{}B\033[K'.format(rows - 1)) # 清空最后一帧的所有行(从倒数第二行起) for i in range(rows - 1): # 光标上移一行 self.streamOut('\033[1A') # 清空光标所在行 self.streamOut('\r\033[K') if breakflag: self.streamOut('User interrupt!\n') else: self.streamOut('Finished!\n') if __name__ == '__main__': v2char = V2Char('vedio.mp4')#'vedio.mp4'是《只因你太美》视频的名称,如果名称是别的 #可以自定义 v2char.play() |
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