前三个点位所有功能已调通

pkg/utils/link_audio.go

@@ -1,4 +1,4 @@
-package audio
+package utils
 
 import (
 	"bytes"
@@ -47,15 +47,19 @@ func get(u string) io.ReadCloser {
 	return resp.Body
 }
 
+// LinkAudio 链接音频，解析链接，直接提取为数据流
 func LinkAudio(link string) (bgm io.ReadCloser) {
+	if link == "" {
+		return nil
+	}
 	u, err := url.Parse(link)
 	if err != nil {
 		log.Println("音频 URL 解析错误: ", err)
 	} else {
 		if u.Scheme == "file" {
-			bgm = open(u.String())
+			bgm = open(link)
 		} else if u.Scheme == "http" || u.Scheme == "https" {
-			bgm = get(u.String())
+			bgm = get(link)
 		} else {
 			log.Printf("不支持的音频文件协议: %v\n", u.String())
 			return

pkg/utils/link_video.go

@@ -0,0 +1,55 @@
+package utils
+
+import (
+	"io"
+	"log"
+	"net/http"
+	"net/url"
+	"os"
+	"path"
+	"strings"
+)
+
+// LinkVideo 链接视频，解析链接，网络文件会下载到临时目录并返回本地路径
+func LinkVideo(link string) (local string) {
+	if link == "" {
+		return
+	}
+	u, err := url.Parse(link)
+	if err != nil {
+		log.Println("音频 URL 解析错误: ", err)
+	} else {
+		if u.Scheme == "file" {
+			local, _ = strings.CutPrefix(link, "file://")
+		} else if u.Scheme == "http" || u.Scheme == "https" {
+			p, _ := url.PathUnescape(u.EscapedPath())
+			tmpLocal := path.Join(os.TempDir(), path.Base(p))
+			err = Download(link, tmpLocal)
+			if err != nil {
+				log.Println("音频文件下载失败: ", err)
+				return
+			}
+			local = tmpLocal
+		} else {
+			log.Printf("不支持的视频链接协议: %v\n", u.String())
+			return
+		}
+	}
+	return
+}
+
+// Download 下载文件
+func Download(link string, local string) (err error) {
+	resp, err := http.Get(link)
+	if err != nil {
+		return
+	}
+	defer resp.Body.Close()
+	f, err := os.OpenFile(local, os.O_CREATE|os.O_WRONLY, 0666)
+	if err != nil {
+		return
+	}
+	defer f.Close()
+	_, err = io.Copy(f, resp.Body)
+	return
+}

pkg/video/paly.go

@@ -1 +1,47 @@
 package video
+
+import (
+	"bufio"
+	"context"
+	"io"
+	"log"
+	"os/exec"
+	"sync"
+)
+
+func Play(ctx context.Context, file string) error {
+	if file == "" {
+		log.Println("video file is empty")
+		return nil
+	}
+	cmd := exec.CommandContext(ctx, "ffplay", "-autoexit", "-fs", file)
+	pipe, err := cmd.StderrPipe()
+	if err != nil {
+		return err
+	}
+
+	var wait sync.WaitGroup
+	defer wait.Wait()
+
+	a := make(chan struct{})
+	defer close(a)
+	go func() {
+		wait.Add(1)
+		defer wait.Done()
+		for {
+			select {
+			case <-a:
+			default:
+				line, _, err := bufio.NewReader(pipe).ReadLine()
+				if err != nil {
+					if err == io.EOF {
+						return
+					}
+					break
+				}
+				log.Println(string(line))
+			}
+		}
+	}()
+	return cmd.Run()
+}