75 lines
2.2 KiB
Dart
75 lines
2.2 KiB
Dart
import 'package:pilipala/http/danmaku.dart';
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import 'package:pilipala/models/danmaku/dm.pb.dart';
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import 'package:pilipala/plugin/pl_player/index.dart';
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class PlDanmakuController {
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PlDanmakuController(this.cid, this.playerController);
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final int cid;
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final PlPlayerController playerController;
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late Duration videoDuration;
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// 按 6min 分段
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int segCount = 0;
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List<DmSegMobileReply> dmSegList = [];
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int currentSegIndex = 1;
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int currentDmIndex = 0;
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void calcSegment() {
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dmSegList.clear();
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// 视频分段数
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segCount = (videoDuration.inSeconds / (60 * 6)).ceil();
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dmSegList = List<DmSegMobileReply>.generate(
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segCount < 1 ? 1 : segCount, (index) => DmSegMobileReply());
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// 当前分段
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try {
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currentSegIndex =
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(playerController.position.value.inSeconds / (60 * 6)).ceil();
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currentSegIndex = currentSegIndex < 1 ? 1 : currentSegIndex;
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} catch (_) {}
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}
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Future<List<DmSegMobileReply>> queryDanmaku() async {
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// dmSegList.clear();
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DmSegMobileReply result =
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await DanmakaHttp.queryDanmaku(cid: cid, segmentIndex: currentSegIndex);
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if (result.elems.isNotEmpty) {
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result.elems.sort((a, b) => (a.progress).compareTo(b.progress));
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// dmSegList.add(result);
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currentSegIndex = currentSegIndex < 1 ? 1 : currentSegIndex;
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dmSegList[currentSegIndex - 1] = result;
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}
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if (dmSegList.isNotEmpty) {
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findClosestPositionIndex(playerController.position.value.inMilliseconds);
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}
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return dmSegList;
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}
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/// 查询当前最接近的弹幕
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void findClosestPositionIndex(int position) {
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int segIndex = (position / (6 * 60 * 1000)).ceil() - 1;
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if (segIndex < 0) segIndex = 0;
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List elems = dmSegList[segIndex].elems;
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if (segIndex < dmSegList.length) {
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int left = 0;
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int right = elems.length;
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while (left < right) {
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int mid = (right + left) ~/ 2;
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var midPosition = elems[mid].progress;
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if (midPosition >= position) {
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right = mid;
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} else {
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left = mid + 1;
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}
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}
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currentSegIndex = segIndex;
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currentDmIndex = right;
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} else {
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currentSegIndex = segIndex;
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currentDmIndex = 0;
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}
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}
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}
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