初始提交：短剧库源码（含转码优化 ultrafast）

2026-09-17 19:09:08 +08:00
commit 07dc0f1059
247 changed files with 43242 additions and 0 deletions
@@ -0,0 +1,35 @@
+const assert = require('node:assert/strict');
+const test = require('node:test');
+const capabilities = require('./player-capabilities.js');
+const type = 'video/mp4; codecs="avc1.42C01F, mp4a.40.2"';
+function mse(supported) {class MediaSource {} MediaSource.isTypeSupported = () => supported; return {MediaSource};}
+const native = {canPlayType: () => 'probably'}, absent = {canPlayType: () => ''};
+test('iPhone and desktop-mode iPad prefer native HLS even when MSE claims support', () => {
+  for (const agent of [{userAgent:'iPhone Safari'}, {userAgent:'iPad CriOS'}, {platform:'MacIntel',maxTouchPoints:5}]) {
+    assert.equal(capabilities(mse(true), native, agent).choose(type), 'hls');
+    assert.equal(capabilities({}, absent, agent).choose(type), 'hls');
+  }
+});
+test('desktop MSE, native-only, and unsupported browsers are distinguished', () => {
+  assert.equal(capabilities(mse(true), native, {}).choose(type),'mse');
+  assert.equal(capabilities(mse(false), native, {}).choose(type),'hls');
+  assert.equal(capabilities({}, absent, {}).choose(type),'');
+  assert.equal(capabilities(mse(true), absent, {platform:'MacIntel',maxTouchPoints:0}).choose(type),'mse');
+});
+test('broken capability probes cannot prevent native HLS', () => {
+  const environment=mse(true);environment.MediaSource.isTypeSupported=()=>{throw new Error('probe failed');};
+  assert.equal(capabilities(environment,native,{}).choose(type),'hls');
+  assert.equal(capabilities({MediaSource:{}},native,{}).choose(type),'hls');
+  assert.equal(capabilities({}, {canPlayType:()=> 'no'}, {}).choose(type),'');
+});
+
+test('remux requires compatible H.264 profiles and never replaces iOS HLS', () => {
+  assert.equal(capabilities(mse(true), native, {}).remux(), true);
+  assert.equal(capabilities(mse(false), native, {}).remux(), false);
+  assert.equal(capabilities(mse(true), native, {userAgent:'iPhone Safari'}).remux(), false);
+  const limited = mse(true);
+  limited.MediaSource.isTypeSupported = type => type.includes('42E0');
+  assert.equal(capabilities(limited, absent, {}).remux(), false);
+  limited.MediaSource.isTypeSupported = () => {throw new Error('probe unavailable');};
+  assert.equal(capabilities(limited, native, {}).remux(), false);
+});