!1513 create CastEngine SIG description

* create CastEngine SIG description

sig/sig_castengine/OWNERS

+{
+    "Leader": [{
+        "gitee_id": "wanghao_8866",
+        "gitee_email": "zidane.wanghao@huawei.com"
+    }],
+    "Committers": [{
+            "gitee_id": "wanghao_8866",
+            "gitee_email": "zidane.wanghao@huawei.com"
+        },
+        {
+            "gitee_id": "JasonLi111",
+            "gitee_email": "lijianzhao111@huawei.com"
+        },
+        {
+            "gitee_id": "dyl-dev",
+            "gitee_email": "diaoyuelei@huawei.com"
+        },
+        {
+            "gitee_id": "dk_dingkang",
+            "gitee_email": "dingkang@huawei.com"
+        },
+        {
+            "gitee_id": "zg2wvj",
+            "gitee_email": "zhangge2@huawei.com"
+        },
+        {
+            "gitee_id": "solomongao",
+            "gitee_email": "will.gaowei@huawei.com"
+        },
+        {
+            "gitee_id": "ibanezsc",
+            "gitee_email": "shichong@kaihong.com"
+        },
+        {
+            "gitee_id": "bayanxing",
+            "gitee_email": "bayanxing@kaihong.com"
+        },
+        {
+            "gitee_id": "algoideas",
+            "gitee_email": "minjie.yu@unionman.com.cn"
+        },
+        {
+            "gitee_id": "daziran96",
+            "gitee_email": "liziran2@huawei.com"
+        }
+    ]
+}
\ No newline at end of file

sig/sig_castengine/sig_castengine.md

+# sig_castengine
+English | [简体中文](./sig_castengine_cn.md)
+
+Note: The content of this SIG follows the convention described in OpenHarmony's PMC Management Charter [README](../../zh/pmc.md).
+
+## SIG group work objectives and scope
+Provides screen and audio casting capabilities with multiple protocols such as Cast+ Stream, Miracast, and DLNA, as well as the ability to switch between these protocols seamlessly, offering unified interfaces and a standardized experience for developers.
+
+## SIG Members
+
+### Leader
+- wanghao(https://gitee.com/wanghao_8866)
+
+### Committers
+- lijianzhao(https://gitee.com/JasonLi111)
+- diaoyuelei(https://gitee.com/dyl-dev)
+- dingkang(https://gitee.com/dk_dingkang)
+- zhangge(https://gitee.com/zg2wvj)
+- gaowei(https://gitee.com/solomongao)
+- ibanezsc(https://gitee.com/ibanezsc)
+- bayanxing(https://gitee.com/bayanxing)
+- algoideas(https://gitee.com/algoideas)
+- liziran(https://gitee.com/daziran96)
+
+### Meetings
+ - Meeting time：Biweekly regular meeting 16:00-17:00 on Thursday afternoon
+ - Meeting application:  [sig_castengine Meeting Proposal](https://docs.qingque.cn/s/home/eZQC8DnY-lAvzY81PB4Kd-Ehk?identityId=1yOkXOqnIUl)
+ - Meeting link: Welink Meeting or Others
+ - Meeting notification: [Subscribe to] (https://lists.openatom.io/postorius/lists/dev.openharmony.io) mailing list dev@openharmony.io for the meeting link
+ - Meeting-Minutes: [Archive link address](https://gitee.com/openharmony-sig/sig-content)
+
+### Contact (optional)
+
+- Mailing list：dev@openharmony.io
+- Wechat group：NA
\ No newline at end of file

sig/sig_castengine/sig_castengine_cn.md

+# sig_castengine
+简体中文 | [English](./sig_castengine.md)
+
+说明：本SIG的内容遵循OpenHarmony的PMC管理章程 [README](/zh/pmc.md)中描述的约定。
+
+## SIG组工作目标和范围
+
+### 工作目标
+- 提供自适应Cast+ Stream，Wi-Fi Display，DLNA多种协议的音视频投播能力，为南北向开发者提供统一的接口及归一化的体验。
+
+### 工作范围
+- 投播框架模块：提供整体的投播框架，支持其他投屏协议的接入以及投屏协议自适应选择。
+- Cast+ Stream模块：主要功能是实现媒体资源的投射到对端设备，并支持双端的播控。
+- Wi-Fi Display模块：主要功能是实现以Wi-Fi直连（Wi-Fi Direct）为基础的无线显示标准。
+- DLNA模块：实现DLNA标准协议。
+
+无线投播服务SIG（ sig_castengine ）技术栈范围全景图如下图所示：
+![OpenHarmony文档概览](figures/castengine_overview.png)
+
+## SIG组成员
+
+### Leader
+- wanghao(https://gitee.com/wanghao_8866)
+
+### Committers列表
+- lijianzhao(https://gitee.com/JasonLi111)
+- diaoyuelei(https://gitee.com/dyl-dev)
+- dingkang(https://gitee.com/dk_dingkang)
+- zhangge(https://gitee.com/zg2wvj)
+- gaowei(https://gitee.com/solomongao)
+- ibanezsc(https://gitee.com/ibanezsc)
+- bayanxing(https://gitee.com/bayanxing)
+- algoideas(https://gitee.com/algoideas)
+- liziran(https://gitee.com/daziran96)
+
+### 会议
+ - 会议时间：双周例会 周四下午16:00-17:00
+ - 会议申报：[sig_castengine Meeting Proposal](https://docs.qingque.cn/s/home/eZQC8DnY-lAvzY81PB4Kd-Ehk?identityId=1yOkXOqnIUl)
+ - 会议链接: Welink或其他会议
+ - 会议通知: 请[订阅](https://lists.openatom.io/postorius/lists/dev.openharmony.io)邮件列表 dev@openharmony.io 获取会议链接
+ - 会议纪要: [归档链接地址](https://gitee.com/openharmony-sig/sig-content)
+
+### 联系方式(可选)
+
+- 邮件列表：dev@openharmony.io
+- 微信群：NA

sig/sigs_list.toml

@@ -6707,3 +6707,14 @@ projects = []
 [sig.leader]
 gitee_id = "https://gitee.com/frank-huangran"
 gitee_email = "frank.huangran@huawei.com"
+
+[[sig]]
+sig_name = "sig_castengine"
+description = "提供自适应Cast+ Stream，Wi-Fi Display，DLNA多种协议的音视频投播能力，为南北向开发者提供统一的接口及归一化的体验"
+sig_status = "active"
+sub_system = ["L1S_CastEngine"]
+projects = []
+
+[sig.leader]
+gitee_id = "https://gitee.com/wanghao8866"
+gitee_email = "zidane.wanghao@huawei.com"
\ No newline at end of file