1388 lines
46 KiB
Python
1388 lines
46 KiB
Python
#!/usr/bin/env python3
|
||
"""跨平台媒体播放器（Windows / Linux / macOS）。
|
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|
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基于 tkinter；播放内核按优先级为：VLC（python-vlc）、纯 Python 解码
|
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（PyAV + sounddevice，无需安装任何外部软件）、pygame 音频回退。
|
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用法：
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python media_player.py [媒体文件或文件夹...]
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常用快捷键：
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Space 播放 / 暂停
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← / → 后退 / 前进 10 秒
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Shift+← / → 后退 / 前进 60 秒
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↑ / ↓ 音量 +5 / -5
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M 静音 / 恢复
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Ctrl+← / → 上一首 / 下一首（macOS 也支持 Command+← / →）
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N / P 下一首 / 上一首
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[ / ] 减速 / 加速（0.5x - 2.0x）
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L 切换循环模式（关 / 单曲 / 列表）
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F 视频全屏切换
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Esc 退出全屏
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Ctrl+O 打开文件（macOS 也支持 Command+O）
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Delete 从播放列表移除所选曲目
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Enter 播放列表中选中的曲目
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"""
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import collections
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import json
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import os
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import queue
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import sys
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import threading
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import time
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from pathlib import Path
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import tkinter as tk
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from tkinter import filedialog, messagebox, ttk
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try:
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from PIL import Image as PILImage, ImageTk
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except ImportError:
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PILImage = ImageTk = None
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try:
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import vlc
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except Exception:
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vlc = None
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try:
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import pygame
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except ImportError:
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pygame = None
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IS_MAC = sys.platform == "darwin"
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IS_WIN = sys.platform == "win32"
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IS_LINUX = sys.platform.startswith("linux")
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AUDIO_EXTS = {
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".mp3", ".wav", ".ogg", ".flac", ".m4a", ".aac",
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".opus", ".wma", ".aiff", ".ape",
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}
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VIDEO_EXTS = {
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".mp4", ".mkv", ".avi", ".mov", ".wmv", ".flv",
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".webm", ".m4v", ".ts", ".mpg", ".mpeg", ".3gp",
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}
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SUPPORTED_EXTS = AUDIO_EXTS | VIDEO_EXTS
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LOOP_LABELS = {"off": "循环: 关", "one": "循环: 单曲", "list": "循环: 列表"}
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SPEED_PRESETS = [0.5, 0.75, 1.0, 1.25, 1.5, 2.0]
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SEEK_STEP = 10
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SEEK_STEP_BIG = 60
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def fmt_time(ms):
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"""把毫秒格式化为 mm:ss 或 h:mm:ss。"""
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if ms is None or ms < 0:
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return "--:--"
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total = int(ms // 1000)
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hours, remainder = divmod(total, 3600)
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minutes, seconds = divmod(remainder, 60)
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if hours:
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return f"{hours}:{minutes:02d}:{seconds:02d}"
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return f"{minutes:02d}:{seconds:02d}"
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class _BaseEngine:
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"""播放内核统一接口。"""
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EMBEDDABLE = False
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supports_rate = True
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def __init__(self):
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self._events = queue.Queue()
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def play(self, path):
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raise NotImplementedError
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def toggle_pause(self):
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pass
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def stop(self):
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pass
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def seek(self, ms):
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return False
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def get_time(self):
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return -1
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def get_length(self):
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return -1
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def is_active(self):
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return False
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def is_playing(self):
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return False
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def set_volume(self, volume):
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pass
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def set_rate(self, rate):
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pass
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def set_fullscreen(self, on):
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pass
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def embed(self, window_id):
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return False
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def get_frame(self):
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"""返回当前应显示的帧（PIL 图像），没有新帧时返回 None。"""
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return None
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def poll_events(self):
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events = []
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while True:
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try:
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events.append(self._events.get_nowait())
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except queue.Empty:
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return events
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def release(self):
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pass
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class VlcEngine(_BaseEngine):
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"""基于 VLC 的内核：支持音视频、定位、变速与全屏。"""
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EMBEDDABLE = not IS_MAC
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def __init__(self):
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super().__init__()
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args = ["--no-video-title-show", "--quiet"]
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if IS_MAC:
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args.append("--vout=macosx")
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self.instance = vlc.Instance(args)
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self.player = self.instance.media_player_new()
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self._media = None
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self._rate = 1.0
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self._volume = 80
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manager = self.player.event_manager()
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manager.event_attach(vlc.EventType.MediaPlayerEndReached, self._on_event_end)
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manager.event_attach(vlc.EventType.MediaPlayerEncounteredError, self._on_event_error)
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def _on_event_end(self, _event):
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self._events.put("end")
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def _on_event_error(self, _event):
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self._events.put("error")
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def play(self, path):
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media = self.instance.media_new(str(path))
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self.player.set_media(media)
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self._media = media
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self.player.play()
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self.player.set_rate(self._rate)
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self.player.audio_set_volume(self._volume)
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return True
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def toggle_pause(self):
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if not self.is_active():
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return
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if self.is_playing():
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self.player.set_pause(1)
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else:
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self.player.set_pause(0)
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def stop(self):
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self.player.stop()
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self._media = None
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def seek(self, ms):
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if not self.is_active():
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return False
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self.player.set_time(max(int(ms), 0))
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return True
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def get_time(self):
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return self.player.get_time() if self.is_active() else -1
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def get_length(self):
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if not self.is_active():
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return -1
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length = self.player.get_length()
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return length if length > 0 else -1
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def is_active(self):
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return self._media is not None
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def is_playing(self):
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return bool(self.player.is_playing())
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def set_volume(self, volume):
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self._volume = max(0, min(100, int(volume)))
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self.player.audio_set_volume(self._volume)
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def set_rate(self, rate):
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self._rate = float(rate)
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self.player.set_rate(self._rate)
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def set_fullscreen(self, on):
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self.player.set_fullscreen(bool(on))
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def embed(self, window_id):
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if IS_WIN:
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self.player.set_hwnd(int(window_id))
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elif IS_LINUX:
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self.player.set_xwindow(int(window_id))
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return True
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def release(self):
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try:
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self.player.stop()
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self.player.release()
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except Exception:
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pass
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class PygameEngine(_BaseEngine):
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"""基于 pygame 的回退内核：无 VLC 时播放音频文件。"""
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EMBEDDABLE = False
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supports_rate = False
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def __init__(self):
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super().__init__()
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pygame.mixer.init()
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self._volume = 80
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self._paused = False
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self._started = False
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self._stopped = True
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self._pos = 0
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self._end_reported = False
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def play(self, path):
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self.stop()
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pygame.mixer.music.load(str(path))
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pygame.mixer.music.play()
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pygame.mixer.music.set_volume(self._volume / 100.0)
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self._started = True
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self._stopped = False
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self._paused = False
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self._pos = 0
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self._end_reported = False
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return True
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def toggle_pause(self):
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if self._stopped:
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return
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if self._paused:
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pygame.mixer.music.unpause()
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self._paused = False
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else:
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pygame.mixer.music.pause()
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self._paused = True
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def stop(self):
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pygame.mixer.music.stop()
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self._started = False
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self._stopped = True
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self._paused = False
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self._pos = 0
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def seek(self, ms):
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try:
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pygame.mixer.music.set_pos(max(ms, 0) / 1000.0)
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self._pos = max(ms, 0)
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return True
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except pygame.error:
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return False
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def get_time(self):
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if self._stopped:
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return -1
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if not self._paused and pygame.mixer.music.get_busy():
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pos = pygame.mixer.music.get_pos()
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if pos > 0:
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self._pos = pos
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return int(self._pos)
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def get_length(self):
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return -1
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def is_active(self):
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return self._started
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def is_playing(self):
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return self._started and not self._paused and pygame.mixer.music.get_busy()
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def set_volume(self, volume):
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self._volume = max(0, min(100, int(volume)))
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pygame.mixer.music.set_volume(self._volume / 100.0)
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def set_rate(self, rate):
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pass
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def set_fullscreen(self, on):
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pass
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|
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def poll_events(self):
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||
events = super().poll_events()
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if (
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self._started
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and not self._paused
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and not self._stopped
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||
and not pygame.mixer.music.get_busy()
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and not self._end_reported
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):
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self._end_reported = True
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events.append("end")
|
||
return events
|
||
|
||
def release(self):
|
||
try:
|
||
pygame.mixer.music.stop()
|
||
pygame.mixer.quit()
|
||
except Exception:
|
||
pass
|
||
|
||
|
||
class AvEngine(_BaseEngine):
|
||
"""纯 Python 解码内核：基于 PyAV 与 sounddevice，无需安装 VLC。
|
||
|
||
跨平台（Windows / macOS / Linux）可用：PyAV 自带 FFmpeg 解码能力，
|
||
sounddevice 自带 PortAudio 音频输出，视频画面由主窗口负责绘制。
|
||
"""
|
||
|
||
EMBEDDABLE = True
|
||
supports_rate = False
|
||
|
||
AUDIO_RATE = 44100
|
||
|
||
def __init__(self):
|
||
super().__init__()
|
||
try:
|
||
import av
|
||
import numpy # noqa: F401 to_ndarray 依赖
|
||
import sounddevice as sd
|
||
from PIL import Image # noqa: F401
|
||
except ImportError as exc:
|
||
raise ImportError("缺少纯 Python 播放依赖（av / sounddevice / numpy / Pillow）：%s" % exc)
|
||
self._av = av
|
||
self._sd = sd
|
||
self._lock = threading.Lock()
|
||
self._reset_state()
|
||
|
||
def _reset_state(self):
|
||
self._container = None
|
||
self._video_stream = None
|
||
self._audio_stream = None
|
||
self._video_deque = collections.deque()
|
||
self._video_deque_max = 6
|
||
self._audio_queue = queue.Queue(maxsize=64)
|
||
self._audio_leftover = None
|
||
self._audio_stream_obj = None
|
||
self._audio_ok = False
|
||
self._audio_broken = False
|
||
self._audio_written = 0
|
||
self._resampler = None
|
||
self._thread = None
|
||
self._stop_flag = threading.Event()
|
||
self._seek_request = None
|
||
self._gen = 0
|
||
self._seek_after = 0.0
|
||
self._eof = False
|
||
self._ended = False
|
||
self._paused = False
|
||
self._volume = 80
|
||
self._clock_base = 0.0
|
||
self._clock_started = time.monotonic()
|
||
self._clock_running = False
|
||
|
||
def play(self, path):
|
||
self.stop()
|
||
container = self._av.open(str(path))
|
||
self._container = container
|
||
videos = [s for s in container.streams if s.type == "video"]
|
||
if videos:
|
||
from av.stream import Disposition
|
||
|
||
self._video_stream = max(
|
||
videos,
|
||
key=lambda s: (0 if s.disposition & Disposition.attached_pic else 1, s.frames or 0),
|
||
)
|
||
else:
|
||
self._video_stream = None
|
||
self._audio_stream = next((s for s in container.streams if s.type == "audio"), None)
|
||
self._gen += 1
|
||
self._eof = False
|
||
self._ended = False
|
||
self._paused = False
|
||
self._seek_after = 0.0
|
||
self._resampler = None
|
||
self._audio_ok = False
|
||
self._audio_broken = False
|
||
if self._audio_stream is not None:
|
||
try:
|
||
self._audio_stream_obj = self._sd.OutputStream(
|
||
samplerate=self.AUDIO_RATE,
|
||
channels=2,
|
||
dtype="float32",
|
||
callback=self._audio_callback,
|
||
)
|
||
self._audio_stream_obj.start()
|
||
self._audio_ok = True
|
||
except Exception:
|
||
self._audio_stream_obj = None
|
||
self._audio_written = 0
|
||
self._clock_base = 0.0
|
||
self._clock_started = time.monotonic()
|
||
self._clock_running = self._audio_stream_obj is None
|
||
self._stop_flag = threading.Event()
|
||
self._thread = threading.Thread(target=self._decode_loop, daemon=True)
|
||
self._thread.start()
|
||
return True
|
||
|
||
def toggle_pause(self):
|
||
if not self.is_active() or self._ended:
|
||
return
|
||
self._paused = not self._paused
|
||
if self._paused:
|
||
if self._clock_running:
|
||
self._clock_base = self._noaudio_pos()
|
||
self._clock_running = False
|
||
else:
|
||
self._clock_started = time.monotonic()
|
||
if self._audio_stream_obj is None:
|
||
self._clock_running = True
|
||
|
||
def stop(self):
|
||
self._stop_flag.set()
|
||
if self._thread is not None:
|
||
self._thread.join(timeout=1.0)
|
||
if self._audio_stream_obj is not None:
|
||
try:
|
||
self._audio_stream_obj.stop()
|
||
self._audio_stream_obj.close()
|
||
except Exception:
|
||
pass
|
||
if self._container is not None:
|
||
try:
|
||
self._container.close()
|
||
except Exception:
|
||
pass
|
||
self._reset_state()
|
||
|
||
def seek(self, ms):
|
||
if not self.is_active():
|
||
return False
|
||
target = max(0.0, int(ms) / 1000.0)
|
||
with self._lock:
|
||
self._seek_request = target
|
||
self._seek_after = target
|
||
self._gen += 1
|
||
self._video_deque.clear()
|
||
self._drain_queue(self._audio_queue)
|
||
self._audio_leftover = None
|
||
self._audio_written = int(target * self.AUDIO_RATE)
|
||
self._clock_base = target
|
||
self._clock_started = time.monotonic()
|
||
self._ended = False
|
||
if self._audio_stream_obj is not None:
|
||
try:
|
||
self._audio_stream_obj.stop()
|
||
self._audio_stream_obj.start()
|
||
except Exception:
|
||
pass
|
||
if self._thread is None or not self._thread.is_alive():
|
||
self._eof = False
|
||
self._resampler = None
|
||
self._stop_flag = threading.Event()
|
||
self._thread = threading.Thread(target=self._decode_loop, daemon=True)
|
||
self._thread.start()
|
||
return True
|
||
|
||
def get_time(self):
|
||
if not self.is_active():
|
||
return -1
|
||
if self._audio_stream_obj is not None:
|
||
with self._lock:
|
||
return int(self._audio_written * 1000.0 / self.AUDIO_RATE)
|
||
return int(self._noaudio_pos() * 1000.0)
|
||
|
||
def _disable_audio(self, reason=""):
|
||
"""音频不可用时降级为无声播放，视频播放不受影响。"""
|
||
stream = self._audio_stream_obj
|
||
self._audio_stream_obj = None
|
||
self._audio_ok = False
|
||
self._audio_broken = False
|
||
self._drain_queue(self._audio_queue)
|
||
self._audio_leftover = None
|
||
if stream is not None:
|
||
try:
|
||
stream.stop()
|
||
stream.close()
|
||
except Exception:
|
||
pass
|
||
with self._lock:
|
||
self._clock_base = self._audio_written / self.AUDIO_RATE
|
||
self._clock_started = time.monotonic()
|
||
self._clock_running = not self._paused
|
||
if reason:
|
||
print("音频不可用，已切换为无声播放：", reason)
|
||
|
||
def _noaudio_pos(self):
|
||
if self._clock_running:
|
||
return self._clock_base + (time.monotonic() - self._clock_started)
|
||
return self._clock_base
|
||
|
||
def get_length(self):
|
||
if not self.is_active():
|
||
return -1
|
||
duration = self._container.duration
|
||
if duration and duration > 0:
|
||
return int(duration / 1000)
|
||
return -1
|
||
|
||
def is_active(self):
|
||
return self._container is not None
|
||
|
||
def is_playing(self):
|
||
return self.is_active() and not self._paused and not self._ended
|
||
|
||
def set_volume(self, volume):
|
||
self._volume = max(0, min(100, int(volume)))
|
||
|
||
def set_rate(self, rate):
|
||
pass
|
||
|
||
def set_fullscreen(self, on):
|
||
pass
|
||
|
||
def embed(self, window_id):
|
||
return False
|
||
|
||
def get_frame(self):
|
||
if not self.is_active():
|
||
return None
|
||
pos = self.get_time() / 1000.0
|
||
latest = None
|
||
with self._lock:
|
||
while self._video_deque:
|
||
gen, secs, img = self._video_deque[0]
|
||
if gen != self._gen:
|
||
self._video_deque.popleft()
|
||
continue
|
||
if secs > pos + 0.05:
|
||
break
|
||
latest = img
|
||
self._video_deque.popleft()
|
||
return latest
|
||
|
||
def poll_events(self):
|
||
events = super().poll_events()
|
||
if self._audio_broken and self._audio_stream_obj is not None:
|
||
self._disable_audio("音频回调异常")
|
||
if not self._ended and self.is_active() and not self._paused and self._eof:
|
||
with self._lock:
|
||
video_done = not self._video_deque
|
||
audio_done = (
|
||
self._audio_stream_obj is None
|
||
or (self._audio_queue.empty() and self._audio_leftover is None)
|
||
)
|
||
if video_done and audio_done:
|
||
self._ended = True
|
||
events.append("end")
|
||
return events
|
||
|
||
def release(self):
|
||
self.stop()
|
||
|
||
def _decode_loop(self):
|
||
try:
|
||
container = self._container
|
||
video = self._video_stream
|
||
audio = self._audio_stream
|
||
streams = [s for s in (video, audio) if s is not None]
|
||
demux = container.demux(*streams)
|
||
while not self._stop_flag.is_set():
|
||
if self._seek_request is not None:
|
||
with self._lock:
|
||
target = self._seek_request
|
||
self._seek_request = None
|
||
seek_stream = video if video is not None else audio
|
||
if seek_stream is not None:
|
||
offset = int(round(target / float(seek_stream.time_base)))
|
||
try:
|
||
container.seek(offset, stream=seek_stream)
|
||
except Exception:
|
||
pass
|
||
demux = container.demux(*streams)
|
||
self._resampler = None
|
||
continue
|
||
gen = self._gen
|
||
try:
|
||
packet = next(demux)
|
||
except StopIteration:
|
||
self._eof = True
|
||
break
|
||
except Exception:
|
||
self._eof = True
|
||
break
|
||
if self._stop_flag.is_set():
|
||
break
|
||
if packet.stream.type == "video" and video is not None and packet.size:
|
||
try:
|
||
frames = packet.decode()
|
||
except Exception:
|
||
continue
|
||
for frame in frames:
|
||
if self._stop_flag.is_set():
|
||
break
|
||
if frame.pts is None:
|
||
continue
|
||
secs = float(frame.pts * video.time_base)
|
||
if secs + 0.05 < self._seek_after:
|
||
continue
|
||
try:
|
||
img = frame.to_image()
|
||
except Exception:
|
||
continue
|
||
while not self._stop_flag.is_set():
|
||
with self._lock:
|
||
if len(self._video_deque) < self._video_deque_max:
|
||
self._video_deque.append((gen, secs, img))
|
||
break
|
||
time.sleep(0.005)
|
||
elif packet.stream.type == "audio" and audio is not None and packet.size:
|
||
if not self._audio_ok:
|
||
continue
|
||
try:
|
||
self._decode_audio_packet(packet, gen)
|
||
except Exception as exc:
|
||
self._disable_audio("音频解码出错（%s）" % exc)
|
||
if self._resampler is not None and not self._stop_flag.is_set():
|
||
self._flush_resampler()
|
||
except Exception as exc:
|
||
self._eof = True
|
||
print("解码线程异常退出：", exc)
|
||
|
||
def _decode_audio_packet(self, packet, gen):
|
||
try:
|
||
frames = packet.decode()
|
||
except Exception:
|
||
return
|
||
atb = self._audio_stream.time_base
|
||
for frame in frames:
|
||
if self._stop_flag.is_set():
|
||
return
|
||
if frame.pts is not None:
|
||
secs = float(frame.pts * atb)
|
||
if secs + 0.05 < self._seek_after:
|
||
continue
|
||
if self._resampler is None:
|
||
self._resampler = self._av.AudioResampler(
|
||
format="fltp", layout="stereo", rate=self.AUDIO_RATE
|
||
)
|
||
for out in self._resampler.resample(frame):
|
||
try:
|
||
chunk = out.to_ndarray().T
|
||
except Exception:
|
||
continue
|
||
self._put_audio((gen, chunk))
|
||
|
||
def _put_audio(self, item):
|
||
while not self._stop_flag.is_set():
|
||
try:
|
||
self._audio_queue.put(item, timeout=0.1)
|
||
return
|
||
except queue.Full:
|
||
if item[0] != self._gen:
|
||
return
|
||
|
||
def _flush_resampler(self):
|
||
try:
|
||
for out in self._resampler.resample(None):
|
||
self._put_audio((self._gen, out.to_ndarray().T))
|
||
except Exception:
|
||
pass
|
||
|
||
def _audio_callback(self, outdata, frames, time_info, status):
|
||
try:
|
||
self._audio_callback_inner(outdata, frames)
|
||
except Exception:
|
||
self._audio_broken = True
|
||
outdata[:] = 0
|
||
|
||
def _audio_callback_inner(self, outdata, frames):
|
||
if self._paused:
|
||
outdata[:] = 0
|
||
return
|
||
outdata[:] = 0
|
||
n = 0
|
||
leftover = self._audio_leftover
|
||
if leftover is not None and len(leftover):
|
||
take = min(len(leftover), frames)
|
||
outdata[:take] = leftover[:take]
|
||
n = take
|
||
self._audio_leftover = leftover[take:] if take < len(leftover) else None
|
||
while n < frames:
|
||
try:
|
||
item = self._audio_queue.get_nowait()
|
||
except queue.Empty:
|
||
break
|
||
gen, chunk = item
|
||
if gen != self._gen:
|
||
continue
|
||
take = min(len(chunk), frames - n)
|
||
outdata[n:n + take] = chunk[:take]
|
||
n += take
|
||
if take < len(chunk):
|
||
self._audio_leftover = chunk[take:]
|
||
outdata *= self._volume / 100.0
|
||
with self._lock:
|
||
self._audio_written += frames
|
||
|
||
@staticmethod
|
||
def _drain_queue(q):
|
||
while True:
|
||
try:
|
||
q.get_nowait()
|
||
except queue.Empty:
|
||
return
|
||
|
||
|
||
class SeekBar(tk.Canvas):
|
||
"""自绘进度条：支持点击与拖动定位，跨平台表现一致。"""
|
||
|
||
TRACK_COLOR = "#4a4a4a"
|
||
FILL_COLOR = "#3f8efc"
|
||
|
||
def __init__(self, master, height=24, command=None):
|
||
super().__init__(
|
||
master,
|
||
height=height,
|
||
bg="#2b2b2b",
|
||
highlightthickness=0,
|
||
cursor="hand2",
|
||
)
|
||
self._command = command
|
||
self._frac = 0.0
|
||
self._dragging = False
|
||
self.bind("<Configure>", lambda _e: self._redraw())
|
||
self.bind("<ButtonPress-1>", self._on_press)
|
||
self.bind("<B1-Motion>", self._on_drag)
|
||
self.bind("<ButtonRelease-1>", self._on_release)
|
||
self._redraw()
|
||
|
||
def _width(self):
|
||
return max(self.winfo_width(), 1)
|
||
|
||
def _x_of_frac(self, frac):
|
||
return 4 + frac * (self._width() - 8)
|
||
|
||
def _frac_of_event(self, event):
|
||
return min(max((event.x - 4) / max(self._width() - 8, 1), 0.0), 1.0)
|
||
|
||
def set_frac(self, frac):
|
||
if not self._dragging:
|
||
self._frac = min(max(frac, 0.0), 1.0)
|
||
self._redraw()
|
||
|
||
def _redraw(self):
|
||
self.delete("all")
|
||
width, height = self._width(), max(self.winfo_height(), 1)
|
||
y = height // 2
|
||
self.create_rectangle(2, y - 3, width - 2, y + 3, fill=self.TRACK_COLOR, outline="")
|
||
x = self._x_of_frac(self._frac)
|
||
if x > 4:
|
||
self.create_rectangle(2, y - 3, x, y + 3, fill=self.FILL_COLOR, outline="")
|
||
radius = 6
|
||
self.create_oval(x - radius, y - radius, x + radius, y + radius, fill=self.FILL_COLOR, outline="")
|
||
|
||
def _on_press(self, event):
|
||
self._dragging = True
|
||
self._frac = self._frac_of_event(event)
|
||
self._redraw()
|
||
if self._command:
|
||
self._command(self._frac, "start")
|
||
|
||
def _on_drag(self, event):
|
||
if not self._dragging:
|
||
return
|
||
self._frac = self._frac_of_event(event)
|
||
self._redraw()
|
||
if self._command:
|
||
self._command(self._frac, "drag")
|
||
|
||
def _on_release(self, event):
|
||
if not self._dragging:
|
||
return
|
||
self._dragging = False
|
||
self._frac = self._frac_of_event(event)
|
||
self._redraw()
|
||
if self._command:
|
||
self._command(self._frac, "end")
|
||
|
||
|
||
class MediaPlayerApp(tk.Tk):
|
||
"""播放器主窗口。"""
|
||
|
||
def __init__(self):
|
||
super().__init__()
|
||
self.title("媒体播放器")
|
||
self.geometry("960x600")
|
||
self.minsize(720, 460)
|
||
|
||
self.playlist = []
|
||
self.current_index = -1
|
||
self.volume = 80
|
||
self.rate = 1.0
|
||
self.loop_mode = "list"
|
||
self._seeking = False
|
||
self._switching_until = 0.0
|
||
self._fullscreen = False
|
||
self._muted_volume = None
|
||
self._photo = None
|
||
|
||
self.engine = self._create_engine()
|
||
if self.engine is None:
|
||
messagebox.showerror(
|
||
"无法启动",
|
||
"未找到可用的播放内核。\n"
|
||
"请先安装 python-vlc（并安装 VLC 播放器），或安装 pygame。",
|
||
)
|
||
self.destroy()
|
||
return
|
||
|
||
self._build_ui()
|
||
self._bind_shortcuts()
|
||
if isinstance(self.engine, PygameEngine):
|
||
self.status_var.set("pygame 音频模式：未检测到 VLC，视频功能不可用")
|
||
elif isinstance(self.engine, AvEngine):
|
||
self.status_var.set("纯 Python 解码内核：无需安装 VLC，可直接播放音视频")
|
||
self._load_playlist()
|
||
self.protocol("WM_DELETE_WINDOW", self._on_close)
|
||
self.after(100, self._maybe_embed)
|
||
self.after(200, self._tick)
|
||
|
||
def _create_engine(self):
|
||
if vlc is not None:
|
||
try:
|
||
return VlcEngine()
|
||
except Exception as exc:
|
||
print("VLC 内核初始化失败，回退到纯 Python 内核：", exc)
|
||
try:
|
||
return AvEngine()
|
||
except Exception as exc:
|
||
print("纯 Python 内核初始化失败，回退到 pygame：", exc)
|
||
if pygame is not None:
|
||
try:
|
||
return PygameEngine()
|
||
except Exception as exc:
|
||
print("pygame 内核初始化失败：", exc)
|
||
return None
|
||
|
||
def _build_ui(self):
|
||
style = ttk.Style(self)
|
||
if "clam" in style.theme_names():
|
||
style.theme_use("clam")
|
||
|
||
toolbar = ttk.Frame(self, padding=(8, 8))
|
||
toolbar.pack(fill="x")
|
||
|
||
ttk.Button(toolbar, text="打开文件…", command=self.open_files, takefocus=0).pack(side="left", padx=(0, 4))
|
||
ttk.Button(toolbar, text="打开文件夹…", command=self.open_folder, takefocus=0).pack(side="left", padx=(0, 8))
|
||
|
||
self.btn_prev = ttk.Button(toolbar, text="上一首", command=self.prev_track, takefocus=0)
|
||
self.btn_prev.pack(side="left", padx=2)
|
||
self.btn_play = ttk.Button(toolbar, text="播放", command=self.toggle_play, width=8, takefocus=0)
|
||
self.btn_play.pack(side="left", padx=2)
|
||
self.btn_stop = ttk.Button(toolbar, text="停止", command=self.stop_playback, takefocus=0)
|
||
self.btn_stop.pack(side="left", padx=2)
|
||
self.btn_next = ttk.Button(toolbar, text="下一首", command=self.next_track, takefocus=0)
|
||
self.btn_next.pack(side="left", padx=(2, 10))
|
||
|
||
self.btn_loop = ttk.Button(toolbar, text=LOOP_LABELS[self.loop_mode], command=self.cycle_loop, width=9, takefocus=0)
|
||
self.btn_loop.pack(side="left", padx=2)
|
||
self.btn_speed = ttk.Button(toolbar, text="速度 1x", command=self.cycle_speed, width=9, takefocus=0)
|
||
self.btn_speed.pack(side="left", padx=2)
|
||
|
||
ttk.Label(toolbar, text="音量").pack(side="right", padx=(10, 4))
|
||
self.volume_slider = ttk.Scale(
|
||
toolbar,
|
||
from_=0,
|
||
to=100,
|
||
length=110,
|
||
value=self.volume,
|
||
command=self._on_volume_slider,
|
||
takefocus=0,
|
||
)
|
||
self.volume_slider.pack(side="right", padx=(0, 4))
|
||
|
||
main = ttk.Frame(self, padding=(8, 0))
|
||
main.pack(fill="both", expand=True)
|
||
main.columnconfigure(0, weight=1)
|
||
main.rowconfigure(0, weight=1)
|
||
|
||
self.video_frame = tk.Frame(main, bg="#101010")
|
||
self.video_frame.grid(row=0, column=0, sticky="nsew", padx=(0, 8))
|
||
if isinstance(self.engine, AvEngine):
|
||
self.video_canvas = tk.Canvas(self.video_frame, bg="#101010", highlightthickness=0)
|
||
self.video_canvas.pack(fill="both", expand=True)
|
||
hint_text = "打开文件开始播放\n（视频将显示在此窗口）"
|
||
if not self.engine.EMBEDDABLE:
|
||
hint_text = "打开文件开始播放\n（视频将在独立窗口中显示）"
|
||
self.video_hint = tk.Label(self.video_frame, text=hint_text, bg="#101010", fg="#8a8a8a")
|
||
self.video_hint.place(relx=0.5, rely=0.5, anchor="center")
|
||
|
||
side = ttk.Frame(main, width=260)
|
||
side.grid(row=0, column=1, sticky="ns")
|
||
side.columnconfigure(0, weight=1)
|
||
side.rowconfigure(0, weight=1)
|
||
self.listbox = tk.Listbox(
|
||
side,
|
||
activestyle="none",
|
||
selectmode="extended",
|
||
selectbackground="#3f8efc",
|
||
selectforeground="#ffffff",
|
||
exportselection=False,
|
||
highlightthickness=0,
|
||
relief="flat",
|
||
)
|
||
self.listbox.grid(row=0, column=0, sticky="nsew")
|
||
scrollbar = ttk.Scrollbar(side, orient="vertical", command=self.listbox.yview)
|
||
scrollbar.grid(row=0, column=1, sticky="ns")
|
||
self.listbox.configure(yscrollcommand=scrollbar.set)
|
||
self._playlist_menu = tk.Menu(self, tearoff=0)
|
||
self._playlist_menu.add_command(label="播放选中曲目", command=self.play_selected)
|
||
self._playlist_menu.add_separator()
|
||
self._playlist_menu.add_command(label="删除选中曲目", command=self.remove_selected)
|
||
self._playlist_menu.add_command(label="清空播放列表", command=self.clear_playlist)
|
||
self.listbox.bind("<Button-3>", self._show_playlist_menu)
|
||
if IS_MAC:
|
||
self.listbox.bind("<Control-Button-1>", self._show_playlist_menu)
|
||
|
||
bottom = ttk.Frame(self, padding=(8, 6))
|
||
bottom.pack(fill="x")
|
||
self.seekbar = SeekBar(bottom, command=self._on_seek_command)
|
||
self.seekbar.pack(fill="x")
|
||
|
||
self.time_var = tk.StringVar(value="00:00 / --:--")
|
||
self.status_var = tk.StringVar(value="就绪 — 打开文件或按 Ctrl+O")
|
||
ttk.Label(bottom, textvariable=self.time_var).pack(side="left", anchor="w")
|
||
ttk.Label(bottom, textvariable=self.status_var, anchor="e").pack(side="right", fill="x", expand=True)
|
||
|
||
def _bind_shortcuts(self):
|
||
shortcuts = [
|
||
("<space>", self._on_space),
|
||
("<Left>", self._on_left),
|
||
("<Right>", self._on_right),
|
||
("<Shift-Left>", lambda _e: self.seek_relative(-SEEK_STEP_BIG)),
|
||
("<Shift-Right>", lambda _e: self.seek_relative(SEEK_STEP_BIG)),
|
||
("<Control-Left>", lambda _e: self.prev_track()),
|
||
("<Control-Right>", lambda _e: self.next_track()),
|
||
("<Command-Left>", lambda _e: self.prev_track()),
|
||
("<Command-Right>", lambda _e: self.next_track()),
|
||
("<Up>", self._on_up),
|
||
("<Down>", self._on_down),
|
||
("<m>", lambda _e: self.toggle_mute()),
|
||
("<M>", lambda _e: self.toggle_mute()),
|
||
("<Control-o>", lambda _e: self.open_files()),
|
||
("<Command-o>", lambda _e: self.open_files()),
|
||
("<Control-Shift-O>", lambda _e: self.open_folder()),
|
||
("<Command-Shift-O>", lambda _e: self.open_folder()),
|
||
("<Control-s>", lambda _e: self.stop_playback()),
|
||
("<Command-s>", lambda _e: self.stop_playback()),
|
||
("<s>", lambda _e: self.stop_playback()),
|
||
("<S>", lambda _e: self.stop_playback()),
|
||
("<n>", lambda _e: self.next_track()),
|
||
("<N>", lambda _e: self.next_track()),
|
||
("<p>", lambda _e: self.prev_track()),
|
||
("<P>", lambda _e: self.prev_track()),
|
||
("<l>", lambda _e: self.cycle_loop()),
|
||
("<L>", lambda _e: self.cycle_loop()),
|
||
("<bracketleft>", lambda _e: self.step_speed(-1)),
|
||
("<bracketright>", lambda _e: self.step_speed(1)),
|
||
("<f>", lambda _e: self.toggle_fullscreen()),
|
||
("<F>", lambda _e: self.toggle_fullscreen()),
|
||
("<Escape>", lambda _e: self.leave_fullscreen()),
|
||
("<Delete>", lambda _e: self.remove_selected()),
|
||
("<Return>", lambda _e: self.play_selected()),
|
||
]
|
||
for sequence, handler in shortcuts:
|
||
self.bind(sequence, handler)
|
||
self.listbox.bind(sequence, handler)
|
||
self.listbox.bind("<Double-Button-1>", lambda _e: self.play_selected())
|
||
|
||
def _on_space(self, _event):
|
||
self.toggle_play()
|
||
return "break"
|
||
|
||
def _on_left(self, _event):
|
||
self.seek_relative(-SEEK_STEP)
|
||
return "break"
|
||
|
||
def _on_right(self, _event):
|
||
self.seek_relative(SEEK_STEP)
|
||
return "break"
|
||
|
||
def _on_up(self, _event):
|
||
self.adjust_volume(5)
|
||
return "break"
|
||
|
||
def _on_down(self, _event):
|
||
self.adjust_volume(-5)
|
||
return "break"
|
||
|
||
def _maybe_embed(self):
|
||
if self.engine.EMBEDDABLE:
|
||
try:
|
||
self.engine.embed(self.video_frame.winfo_id())
|
||
except Exception:
|
||
pass
|
||
|
||
def _tick(self):
|
||
if self.engine is not None:
|
||
for event in self.engine.poll_events():
|
||
if event == "end":
|
||
self._on_media_end()
|
||
elif event == "error":
|
||
self.status_var.set("无法播放该文件，请检查文件格式或 VLC 是否已安装")
|
||
img = self.engine.get_frame()
|
||
if img is not None:
|
||
self._show_frame(img)
|
||
pos = self.engine.get_time()
|
||
length = self.engine.get_length()
|
||
if pos >= 0 and not self._seeking:
|
||
self.time_var.set(f"{fmt_time(pos)} / {fmt_time(length)}")
|
||
if length > 0:
|
||
self.seekbar.set_frac(pos / length)
|
||
playing = self.engine.is_playing()
|
||
self.btn_play.config(text="暂停" if playing else "播放")
|
||
self.after(33, self._tick)
|
||
|
||
def _show_frame(self, img):
|
||
if ImageTk is None:
|
||
return
|
||
canvas = getattr(self, "video_canvas", None)
|
||
if canvas is None:
|
||
return
|
||
width = canvas.winfo_width()
|
||
height = canvas.winfo_height()
|
||
if width < 2 or height < 2:
|
||
return
|
||
iw, ih = img.size
|
||
if iw < 1 or ih < 1:
|
||
return
|
||
scale = min(width / iw, height / ih)
|
||
size = (max(1, int(iw * scale)), max(1, int(ih * scale)))
|
||
if size != img.size:
|
||
img = img.resize(size, PILImage.Resampling.BILINEAR)
|
||
self._photo = ImageTk.PhotoImage(img)
|
||
canvas.delete("all")
|
||
canvas.create_image(width // 2, height // 2, image=self._photo, anchor="center")
|
||
|
||
def open_files(self):
|
||
filetypes = [
|
||
("媒体文件", " ".join("*" + ext for ext in sorted(SUPPORTED_EXTS))),
|
||
("所有文件", "*"),
|
||
]
|
||
paths = filedialog.askopenfilenames(title="选择媒体文件", filetypes=filetypes)
|
||
if paths:
|
||
self.add_paths(list(paths))
|
||
|
||
def open_folder(self):
|
||
folder = filedialog.askdirectory(title="选择包含媒体文件的文件夹")
|
||
if folder:
|
||
self.add_paths([folder])
|
||
|
||
def add_paths(self, paths):
|
||
start = len(self.playlist)
|
||
added = []
|
||
for item in paths:
|
||
path = Path(item)
|
||
if path.is_dir():
|
||
for child in sorted(path.rglob("*")):
|
||
if child.is_file() and child.suffix.lower() in SUPPORTED_EXTS:
|
||
added.append(str(child))
|
||
elif path.is_file() and path.suffix.lower() in SUPPORTED_EXTS:
|
||
added.append(str(path))
|
||
if not added:
|
||
self.status_var.set("所选路径中没有支持的媒体文件")
|
||
return
|
||
self.playlist.extend(added)
|
||
for name in added:
|
||
self.listbox.insert(tk.END, Path(name).name)
|
||
if not self.engine.is_active():
|
||
self.play_index(start)
|
||
else:
|
||
self._update_status()
|
||
self._save_playlist()
|
||
|
||
def _playlist_path(self):
|
||
return Path.home() / ".mediaplayer_playlist.json"
|
||
|
||
def _save_playlist(self):
|
||
try:
|
||
data = {"playlist": list(self.playlist), "current_index": self.current_index}
|
||
self._playlist_path().write_text(
|
||
json.dumps(data, ensure_ascii=False, indent=2), encoding="utf-8"
|
||
)
|
||
except Exception as exc:
|
||
print("保存播放列表失败：", exc)
|
||
|
||
def _load_playlist(self):
|
||
path = self._playlist_path()
|
||
if not path.exists():
|
||
return
|
||
try:
|
||
data = json.loads(path.read_text(encoding="utf-8"))
|
||
items = data.get("playlist", [])
|
||
except Exception as exc:
|
||
print("读取播放列表失败：", exc)
|
||
return
|
||
added = []
|
||
for item in items:
|
||
p = Path(item)
|
||
if p.is_file() and p.suffix.lower() in SUPPORTED_EXTS:
|
||
added.append(str(p))
|
||
if not added:
|
||
return
|
||
self.playlist.extend(added)
|
||
for name in added:
|
||
self.listbox.insert(tk.END, Path(name).name)
|
||
saved_index = data.get("current_index", -1)
|
||
if 0 <= saved_index < len(self.playlist):
|
||
self.current_index = saved_index
|
||
self.listbox.selection_set(saved_index)
|
||
self.listbox.see(saved_index)
|
||
msg = f"已恢复上次的播放列表（{len(added)} 个文件）"
|
||
dropped = len(items) - len(added)
|
||
if dropped:
|
||
msg += f"，已忽略 {dropped} 个不存在的文件"
|
||
self.status_var.set(msg)
|
||
|
||
def play_index(self, index):
|
||
if not (0 <= index < len(self.playlist)):
|
||
return
|
||
self.current_index = index
|
||
path = self.playlist[index]
|
||
self._switching_until = time.monotonic() + 0.8
|
||
if self.engine.EMBEDDABLE:
|
||
try:
|
||
self.engine.embed(self.video_frame.winfo_id())
|
||
except Exception:
|
||
pass
|
||
try:
|
||
ok = self.engine.play(path)
|
||
except Exception:
|
||
ok = False
|
||
if not ok:
|
||
self.status_var.set(f"无法播放：{Path(path).name}")
|
||
return
|
||
self.listbox.selection_clear(0, tk.END)
|
||
self.listbox.selection_set(index)
|
||
self.listbox.see(index)
|
||
if Path(path).suffix.lower() in VIDEO_EXTS and self.engine.EMBEDDABLE:
|
||
self.video_hint.place_forget()
|
||
else:
|
||
self.video_hint.place(relx=0.5, rely=0.5, anchor="center")
|
||
self.title(f"{Path(path).name} — 媒体播放器")
|
||
self._update_status()
|
||
self._save_playlist()
|
||
|
||
def toggle_play(self):
|
||
if not self.playlist:
|
||
self.open_files()
|
||
return
|
||
if not self.engine.is_active():
|
||
self.play_index(self.current_index if self.current_index >= 0 else 0)
|
||
return
|
||
self.engine.toggle_pause()
|
||
self._update_status()
|
||
|
||
def stop_playback(self):
|
||
self.engine.stop()
|
||
self._seeking = False
|
||
self.time_var.set("00:00 / --:--")
|
||
self.seekbar.set_frac(0.0)
|
||
self.btn_play.config(text="播放")
|
||
canvas = getattr(self, "video_canvas", None)
|
||
if canvas is not None:
|
||
canvas.delete("all")
|
||
self._photo = None
|
||
self.video_hint.place(relx=0.5, rely=0.5, anchor="center")
|
||
self._update_status()
|
||
|
||
def next_track(self):
|
||
if not self.playlist:
|
||
self.open_files()
|
||
return
|
||
self.play_index((self.current_index + 1) % len(self.playlist))
|
||
|
||
def prev_track(self):
|
||
if not self.playlist:
|
||
self.open_files()
|
||
return
|
||
self.play_index((self.current_index - 1) % len(self.playlist))
|
||
|
||
def seek_relative(self, seconds):
|
||
pos = self.engine.get_time()
|
||
if pos < 0:
|
||
return
|
||
self.seek_to(pos + seconds * 1000)
|
||
|
||
def seek_to(self, ms):
|
||
ms = max(0, int(ms))
|
||
if not self.engine.seek(ms):
|
||
self.status_var.set("当前文件格式不支持定位")
|
||
|
||
def _on_seek_command(self, frac, phase):
|
||
length = self.engine.get_length()
|
||
if length <= 0:
|
||
return
|
||
target = int(frac * length)
|
||
if phase in ("start", "drag"):
|
||
self._seeking = True
|
||
self.time_var.set(f"{fmt_time(target)} / {fmt_time(length)}")
|
||
else:
|
||
self._seeking = False
|
||
self.seek_to(target)
|
||
|
||
def adjust_volume(self, delta):
|
||
self.volume = max(0, min(100, self.volume + delta))
|
||
self.volume_slider.set(self.volume)
|
||
self.engine.set_volume(self.volume)
|
||
if self.volume > 0:
|
||
self._muted_volume = None
|
||
self._update_status()
|
||
|
||
def _on_volume_slider(self, value):
|
||
self.volume = max(0, min(100, int(float(value))))
|
||
self.engine.set_volume(self.volume)
|
||
if self.volume > 0:
|
||
self._muted_volume = None
|
||
self._update_status()
|
||
|
||
def toggle_mute(self):
|
||
if self.volume > 0:
|
||
self._muted_volume = self.volume
|
||
self.adjust_volume(-self.volume)
|
||
else:
|
||
self.adjust_volume(self._muted_volume or 80)
|
||
|
||
def cycle_loop(self):
|
||
order = ["off", "one", "list"]
|
||
self.loop_mode = order[(order.index(self.loop_mode) + 1) % len(order)]
|
||
self.btn_loop.config(text=LOOP_LABELS[self.loop_mode])
|
||
self._update_status()
|
||
|
||
def cycle_speed(self):
|
||
self.step_speed(1)
|
||
|
||
def step_speed(self, direction):
|
||
if not getattr(self.engine, "supports_rate", True):
|
||
self.status_var.set("当前播放内核不支持变速")
|
||
return
|
||
index = SPEED_PRESETS.index(self.rate) if self.rate in SPEED_PRESETS else SPEED_PRESETS.index(1.0)
|
||
index = (index + direction) % len(SPEED_PRESETS)
|
||
self.rate = SPEED_PRESETS[index]
|
||
self.engine.set_rate(self.rate)
|
||
self.btn_speed.config(text=f"速度 {self.rate:g}x")
|
||
self._update_status()
|
||
|
||
def toggle_fullscreen(self):
|
||
self._fullscreen = not self._fullscreen
|
||
if isinstance(self.engine, AvEngine):
|
||
self.attributes("-fullscreen", self._fullscreen)
|
||
else:
|
||
self.engine.set_fullscreen(self._fullscreen)
|
||
|
||
def leave_fullscreen(self):
|
||
self._fullscreen = False
|
||
if isinstance(self.engine, AvEngine):
|
||
self.attributes("-fullscreen", False)
|
||
else:
|
||
self.engine.set_fullscreen(False)
|
||
|
||
def play_selected(self):
|
||
selection = self.listbox.curselection()
|
||
if selection:
|
||
self.play_index(selection[0])
|
||
|
||
def remove_selected(self):
|
||
selection = list(self.listbox.curselection())
|
||
if not selection:
|
||
return
|
||
if self.current_index in selection:
|
||
self.engine.stop()
|
||
self.current_index = -1
|
||
for index in reversed(selection):
|
||
self.playlist.pop(index)
|
||
self.listbox.delete(index)
|
||
self._update_status()
|
||
self._save_playlist()
|
||
|
||
def _show_playlist_menu(self, event):
|
||
has_selection = bool(self.listbox.curselection())
|
||
self._playlist_menu.entryconfig("播放选中曲目", state="normal" if has_selection else "disabled")
|
||
self._playlist_menu.entryconfig("删除选中曲目", state="normal" if has_selection else "disabled")
|
||
try:
|
||
self._playlist_menu.tk_popup(event.x_root, event.y_root)
|
||
finally:
|
||
self._playlist_menu.grab_release()
|
||
|
||
def clear_playlist(self):
|
||
if not self.playlist:
|
||
return
|
||
if not messagebox.askyesno("清空播放列表", "确定要清空整个播放列表吗？"):
|
||
return
|
||
self.stop_playback()
|
||
self.playlist.clear()
|
||
self.listbox.delete(0, tk.END)
|
||
self.current_index = -1
|
||
self._save_playlist()
|
||
self.status_var.set("播放列表已清空")
|
||
|
||
def _update_status(self):
|
||
parts = [f"循环：{LOOP_LABELS[self.loop_mode].split(':')[1].strip()}"]
|
||
parts.append(f"速度 {self.rate:g}x")
|
||
parts.append(f"音量 {self.volume}")
|
||
if isinstance(self.engine, PygameEngine):
|
||
parts.append("pygame 音频模式（未检测到 VLC，视频不可用）")
|
||
elif isinstance(self.engine, AvEngine):
|
||
parts.append("纯 Python 解码内核（无需 VLC）")
|
||
if 0 <= self.current_index < len(self.playlist):
|
||
name = Path(self.playlist[self.current_index]).name
|
||
total = len(self.playlist)
|
||
parts.insert(0, f"正在播放：{name}（第 {self.current_index + 1}/{total} 首）")
|
||
self.status_var.set("｜".join(parts))
|
||
|
||
def _on_media_end(self):
|
||
if time.monotonic() < self._switching_until:
|
||
return
|
||
if not self.playlist or not self.engine.is_active():
|
||
return
|
||
if self.loop_mode == "one":
|
||
self.play_index(self.current_index)
|
||
return
|
||
next_index = self.current_index + 1
|
||
if next_index < len(self.playlist):
|
||
self.play_index(next_index)
|
||
elif self.loop_mode == "list":
|
||
self.play_index(0)
|
||
else:
|
||
self.stop_playback()
|
||
self.status_var.set("播放结束")
|
||
|
||
def _on_close(self):
|
||
self._save_playlist()
|
||
self.engine.release()
|
||
self.destroy()
|
||
|
||
|
||
def main():
|
||
app = MediaPlayerApp()
|
||
if app.engine is None:
|
||
return
|
||
if sys.argv[1:]:
|
||
app.add_paths(sys.argv[1:])
|
||
app.mainloop()
|
||
|
||
|
||
if __name__ == "__main__":
|
||
main()
|