play method

@override bool play(String url, { StreamType? type, bool? hardWareDecode, bool? isStreamEncrypted, })

播放。 url：拉流地址 type：流协议，可以写死。不同平台可能使用不同协议。一般安卓和ios用eh5，h5用的eh4 hardWareDecode：是否使用硬件编码，可以写死。没有可以不管 isStreamEncrypted：视频流是否为加密

Implementation

@override
bool play(String url, {StreamType? type, bool? hardWareDecode, bool? isStreamEncrypted}) {
  if (url.isEmpty) {
    return false;
  }
  sdkLog("[player] >> play > $url");
  playTimeMs = DateTime.now().millisecondsSinceEpoch;
  if (showLiveRoomTimeMs > 0) {
    // debugLog("显示直播间到开始拉流：${playTimeMs - showLiveRoomTimeMs}ms, url:$url", tag: "LivePlayerUsedTime");
    showLiveRoomTimeMs = 0;
  }

  if (pullStreamUrl.isEmpty) {
    this.isStreamEncrypted = isStreamEncrypted ?? true;
    _impl.play(url, type: type, hardWareDecode: hardWareDecode, isStreamEncrypted: isStreamEncrypted);
  } else {
    _impl.switchStream(url);
  }
  pullStreamUrl = url;
  return true;
}