File size: 3,268 Bytes
d47b053 | 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 | /**
* 文件工具函数
* 文件查找、路径处理
*/
import * as fs from 'fs'
import * as path from 'path'
/**
* 获取质量对应的分辨率字符串
*/
export function getResolutionForQuality(quality: string): string {
const resolutions: Record<string, string> = {
low: '480p',
medium: '720p',
high: '1080p'
}
return resolutions[quality] || '480p'
}
/**
* 查找视频文件
* 支持动态帧率（如 480p15, 480p30, 1080p60 等）
*/
export function findVideoFile(mediaDir: string, quality: string, frameRate?: number): string | null {
const resolution = getResolutionForQuality(quality)
const expectedFrameRate = frameRate || 30
// 首先尝试兼容旧逻辑的固定命名。
const folderWithFrameRate = `${resolution}${expectedFrameRate}`
const expectedPath = path.join(mediaDir, 'videos', 'scene', folderWithFrameRate, 'MainScene.mp4')
if (fs.existsSync(expectedPath)) {
return expectedPath
}
return findLatestFileByExtension(mediaDir, '.mp4')
}
/**
* 查找图片文件
*/
export function findImageFile(mediaDir: string, sceneName?: string): string | null {
if (sceneName) {
const sceneImage = findFileRecursive(mediaDir, `${sceneName}.png`)
if (sceneImage) {
return sceneImage
}
}
return findFirstFileByExtension(mediaDir, '.png')
}
/**
* 递归查找文件
*/
export function findFileRecursive(dir: string, filename: string): string | null {
try {
const entries = fs.readdirSync(dir, { withFileTypes: true })
for (const entry of entries) {
const fullPath = path.join(dir, entry.name)
if (entry.isDirectory()) {
const found = findFileRecursive(fullPath, filename)
if (found) return found
} else if (entry.name === filename) {
return fullPath
}
}
} catch {
// 忽略错误
}
return null
}
function findLatestFileByExtension(dir: string, ext: string): string | null {
const matches: Array<{ path: string; mtimeMs: number }> = []
try {
collectFilesByExtension(dir, ext, matches)
} catch {
return null
}
matches.sort((left, right) => right.mtimeMs - left.mtimeMs)
return matches[0]?.path ?? null
}
function collectFilesByExtension(dir: string, ext: string, matches: Array<{ path: string; mtimeMs: number }>): void {
const entries = fs.readdirSync(dir, { withFileTypes: true })
for (const entry of entries) {
const fullPath = path.join(dir, entry.name)
if (entry.isDirectory()) {
collectFilesByExtension(fullPath, ext, matches)
continue
}
if (entry.name.toLowerCase().endsWith(ext.toLowerCase())) {
const stat = fs.statSync(fullPath)
matches.push({ path: fullPath, mtimeMs: stat.mtimeMs })
}
}
}
function findFirstFileByExtension(dir: string, ext: string): string | null {
try {
const entries = fs.readdirSync(dir, { withFileTypes: true })
for (const entry of entries) {
const fullPath = path.join(dir, entry.name)
if (entry.isDirectory()) {
const found = findFirstFileByExtension(fullPath, ext)
if (found) return found
} else if (entry.name.toLowerCase().endsWith(ext.toLowerCase())) {
return fullPath
}
}
} catch {
// 忽略错误
}
return null
}
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