直播：画质可选、只读 /live/info、弹幕 WS 透传；Nginx 弹幕路径

Made-with: Cursor

server/pkg/weblive/info.go

@@ -0,0 +1,50 @@
+package weblive
+
+import (
+	"net/http"
+	"strings"
+	"time"
+
+	"github.com/gin-gonic/gin"
+)
+
+// liveQualitySet 与前端开播档位一致；非法 query 回落为 high
+var liveQualitySet = map[string]struct{}{
+	"source": {}, "high": {}, "mid": {}, "low": {},
+}
+
+func normalizeQuality(q string) string {
+	q = strings.TrimSpace(strings.ToLower(q))
+	if _, ok := liveQualitySet[q]; ok {
+		return q
+	}
+	return "high"
+}
+
+func liveQualityList() []gin.H {
+	return []gin.H{
+		{"id": "source", "label": "原画（设备默认）"},
+		{"id": "high", "label": "高清 720p"},
+		{"id": "mid", "label": "标清 480p"},
+		{"id": "low", "label": "流畅 360p"},
+	}
+}
+
+// handleLiveInfo 仅 GET、无请求体、不读 query；只输出直播状态与画质元数据
+func handleLiveInfo(c *gin.Context) {
+	h, herr := getHub()
+	live := false
+	cq := ""
+	if herr == nil {
+		h.mu.RLock()
+		live = h.publishConn != nil && h.pubPC != nil && len(h.forwarders) > 0
+		cq = h.publishQuality
+		h.mu.RUnlock()
+	}
+	c.JSON(http.StatusOK, gin.H{
+		"live":            live,
+		"qualities":       liveQualityList(),
+		"current_quality": cq,
+		"ts":              time.Now().UnixMilli(),
+	})
+}