fix: (xgplayer-hls) sps parse case page crash

alisamercury · Jan 30, 2024 · eb101b3 · eb101b3
1 parent 4439c94
commit eb101b3
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Showing 3 changed files with 10 additions and 1 deletion.
diff --git a/packages/xgplayer-streaming-shared/src/net/task.js b/packages/xgplayer-streaming-shared/src/net/task.js
@@ -10,7 +10,7 @@ export class Task {
     this.alive = !!config.onProgress
     !config.logger && (config.logger = new Logger('Loader'))
     this._loaderType = type
-    this._loader = type === LoaderType.FETCH && !!window.fetch ? new FetchLoader() : new XhrLoader()
+    this._loader = type === LoaderType.FETCH && typeof fetch !== 'undefined' ? new FetchLoader() : new XhrLoader()
     this._config = config
     this._retryCount = 0
     this._retryTimer = null

diff --git a/packages/xgplayer-transmuxer/src/codec/hevc.js b/packages/xgplayer-transmuxer/src/codec/hevc.js
@@ -151,6 +151,11 @@ export class HEVC {
 
     const subLayerProfilePresentFlag = []
     const subLayerLevelPresentFlag = []
+
+    if (maxSubLayersMinus1 > eg.bitsAvailable) {
+      throw new Error(`maxSubLayersMinus inavlid size ${maxSubLayersMinus1}`)
+    }
+
     for (let j = 0; j < maxSubLayersMinus1; j++) {
       subLayerProfilePresentFlag[j] = eg.readBits(1)
       subLayerLevelPresentFlag[j] = eg.readBits(1)

diff --git a/packages/xgplayer-transmuxer/src/utils/exp-golomb.js b/packages/xgplayer-transmuxer/src/utils/exp-golomb.js
@@ -12,6 +12,10 @@ export class ExpGolomb {
     if (this._bytesAvailable) this._loadWord()
   }
 
+  get bitsAvailable () {
+    return this._bitsAvailable
+  }
+
   _loadWord () {
     const position = this._data.byteLength - this._bytesAvailable
     const availableBytes = Math.min(4, this._bytesAvailable)