112 lines
2.8 KiB
Dart
112 lines
2.8 KiB
Dart
import 'dart:async';
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import 'dart:io';
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import 'dart:typed_data';
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import 'package:flutter/foundation.dart';
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import 'package:flutter/services.dart';
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import 'video_decode_plugin_platform_interface.dart';
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/// 视频解码器配置
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class VideoDecoderConfig {
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/// 视频宽度
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final int width;
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/// 视频高度
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final int height;
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/// 编码类型，默认h264
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final String codecType;
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/// 构造函数
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VideoDecoderConfig({
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required this.width,
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required this.height,
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this.codecType = 'h264',
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});
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/// 转换为Map
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Map<String, dynamic> toMap() {
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return {
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'width': width,
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'height': height,
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'codecType': codecType,
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};
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}
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}
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/// 视频解码插件主类
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class VideoDecodePlugin {
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static const MethodChannel _channel = MethodChannel('video_decode_plugin');
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static int? _textureId;
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/// 初始化解码器
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static Future<int?> initDecoder(VideoDecoderConfig config) async {
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final textureId = await _channel.invokeMethod<int>('initDecoder', config.toMap());
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_textureId = textureId;
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return textureId;
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}
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/// 解码视频帧（参数扩展）
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static Future<bool> decodeFrame({
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required Uint8List frameData,
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required int frameType, // 0=I帧, 1=P帧
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required int timestamp, // 毫秒或微秒
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required int frameSeq, // 帧序号
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int? refIFrameSeq, // P帧时可选
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}) async {
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if (_textureId == null) return false;
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final params = {
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'textureId': _textureId,
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'frameData': frameData,
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'frameType': frameType,
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'timestamp': timestamp,
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'frameSeq': frameSeq,
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if (refIFrameSeq != null) 'refIFrameSeq': refIFrameSeq,
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};
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final result = await _channel.invokeMethod<bool>('decodeFrame', params);
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return result ?? false;
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}
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/// 释放解码器资源
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static Future<bool> releaseDecoder() async {
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if (_textureId == null) return true;
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final result = await _channel.invokeMethod<bool>('releaseDecoder', {
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'textureId': _textureId,
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});
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_textureId = null;
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return result ?? false;
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}
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/// 获取平台版本
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static Future<String?> getPlatformVersion() {
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return VideoDecodePluginPlatform.instance.getPlatformVersion();
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}
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/// 检查当前平台是否支持
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static bool get isPlatformSupported {
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return Platform.isAndroid || Platform.isIOS;
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}
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/// 获取默认纹理ID
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static int? get textureId => _textureId;
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/// 注册插件（不需要手动调用）
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static void registerWith() {
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// 仅用于插件注册
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}
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}
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/// 在Dart中实现简单的同步锁
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void synchronized(Object lock, Function() action) {
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// 在单线程的Dart中，我们不需要真正的锁
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// 但我们保留这个结构以便将来可能的改进
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action();
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}
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/// 在同步锁中执行并返回结果的版本
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T synchronizedWithResult<T>(Object lock, T Function() action) {
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return action();
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}
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