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我正在编写一个使用omplayer的音乐播放器系统,一切都完成了,但我有一个问题,我需要检测音乐完成时通过subprocess.wait()直到进程和我必须写入字节的过程,如'p'.encode()暂停,'q'.encode()停止等... 问题是,我不能写字节到一个子进程等待它......如果有人知道如何检测一个进程的结束并同时写入,那么欢迎您!无法写入while subprocess.wait
这里是我的代码:
class MusicPlayer(Thread):
def __init__(self, manager, playlist=[]):
self.playlist = []
self.index = 0
self.process = None
self.paused = False
self.stopped = False
self.manager = manager
self.progress_bar = MusicProgressBar(self)
self.progress_bar.start()
Thread.__init__(self)
def run(self):
while True:
if len(self.playlist) is 0:
time.sleep(1)
continue
self.process = subprocess.Popen(['omxplayer' , '-o' , 'local', self.playlist[self.index].file_url])
self.progress_bar.play(self.playlist[0].file_url)
self.paused = False
self.process.wait()
self.index += 1
if self.index >= len(self.playlist):
self.index = 0
def play(self, playlist):
self.playlist = playlist
self.index = 0
def next(self):
if self.process is None: return
self.process.stdin.write('q'.encode())
self.process.stdin.flush()
def before(self):
for i in range(0,2):
self.index -= 1
if self.index < 0:
self.index = len(self.playlist-1)
def stop(self):
if self.process is None: return
self.process.stdin.write('q'.encode())
self.process.stdin.flush()
self.stopped = True
def pause(self):
if self.process is None: return
if self.paused: return
self.process.stdin.write('p'.encode())
self.process.stdin.flush()
self.paused = True
def resume(self):
if self.process is None: return
if not self.paused: return
self.process.stdin.write('p'.encode())
self.process.stdin.flush()
self.paused = False
谢谢你真的多为你解答! 最好的问候,朱利安
看看['Popen.communicate()'](https://docs.python.org/3/library/subprocess.html#subprocess.Popen.communicate)。 – martineau