test(hls): [PKG-HLS-02] cover released contracts and real SDK playback

scripts/generate-hls-fixture.mjs

@@ -0,0 +1,31 @@
+import assert from 'node:assert/strict'
+import { execFileSync } from 'node:child_process'
+import fs from 'node:fs'
+import path from 'node:path'
+import process from 'node:process'
+import { fileURLToPath } from 'node:url'
+import { hash } from '../refactor/scripts/releases.mjs'
+
+const root = fileURLToPath(new URL('../', import.meta.url))
+const output = path.resolve(root, process.argv[2] || 'test/browser/media/hls')
+assert(!fs.existsSync(output), 'Output must be a new directory; never overwrite frozen media')
+const ffmpeg = process.env.ARTPLAYER_FFMPEG || 'ffmpeg'
+const version = execFileSync(ffmpeg, ['-version'], { encoding: 'utf8' }).split(/\r?\n/)[0]
+fs.mkdirSync(output, { recursive: true })
+const commands = []
+function generate(name, input, encoding) {
+  const args = ['-hide_banner', '-loglevel', 'error', '-n', '-f', 'lavfi', '-i', input, '-t', '12', ...encoding, '-f', 'hls', '-hls_time', '2', '-hls_playlist_type', 'vod', '-hls_segment_filename', `${name}-%02d.mpegts`, `${name}.m3u8`]
+  execFileSync(ffmpeg, args, { cwd: output, stdio: 'pipe' })
+  commands.push(args)
+}
+for (const [name, size] of [['low', '160x90'], ['high', '320x180']]) {
+  generate(name, `testsrc2=size=${size}:rate=24`, ['-an', '-c:v', 'libx264', '-pix_fmt', 'yuv420p', '-profile:v', 'baseline', '-level:v', '3.0', '-g', '48', '-keyint_min', '48', '-sc_threshold', '0', '-crf', '28'])
+}
+for (const [name, frequency] of [['english', 440], ['french', 880]])
+  generate(name, `sine=frequency=${frequency}:sample_rate=48000`, ['-vn', '-c:a', 'aac', '-b:a', '48k', '-ac', '2'])
+const variants = '#EXT-X-STREAM-INF:BANDWIDTH=200000,RESOLUTION=160x90,CODECS="avc1.42c01e,mp4a.40.2",AUDIO="audio"\nlow.m3u8\n#EXT-X-STREAM-INF:BANDWIDTH=500000,RESOLUTION=320x180,CODECS="avc1.42c01e,mp4a.40.2",AUDIO="audio"\nhigh.m3u8\n'
+fs.writeFileSync(path.join(output, 'master.m3u8'), `#EXTM3U\n#EXT-X-VERSION:3\n#EXT-X-MEDIA:TYPE=AUDIO,GROUP-ID="audio",NAME="English",LANGUAGE="en",DEFAULT=YES,AUTOSELECT=YES,URI="english.m3u8"\n#EXT-X-MEDIA:TYPE=AUDIO,GROUP-ID="audio",NAME="French",LANGUAGE="fr",DEFAULT=NO,AUTOSELECT=YES,URI="french.m3u8"\n${variants}`)
+fs.writeFileSync(path.join(output, 'video-only.m3u8'), '#EXTM3U\n#EXT-X-VERSION:3\n#EXT-X-STREAM-INF:BANDWIDTH=200000,RESOLUTION=160x90,CODECS="avc1.42c01e"\nlow.m3u8\n')
+const files = Object.fromEntries(fs.readdirSync(output).sort().map(name => [name, { sha256: hash(fs.readFileSync(path.join(output, name))), bytes: fs.statSync(path.join(output, name)).size }]))
+fs.writeFileSync(path.join(output, 'manifest.json'), `${JSON.stringify({ kind: 'generated-hls-media', version, duration: 12, commands, files }, null, 2)}\n`)
+console.log(`Generated ${Object.keys(files).length} HLS files in ${output}`)