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转码api
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139
plugin/transcode/api.go
Executable file
139
plugin/transcode/api.go
Executable file
@@ -0,0 +1,139 @@
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package plugin_transcode
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import (
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"encoding/base64"
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"fmt"
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"m7s.live/m7s/v5/pkg/config"
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transcode "m7s.live/m7s/v5/plugin/transcode/pkg"
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"net/http"
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"os"
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"strconv"
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"strings"
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)
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type OverlayConfig struct {
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OverlayStream string `json:"overlay_stream"` // 叠加流 可为空
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OverlayRegion string `json:"region"` //x,y,w,h 可为空,所有区域
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OverlayImage string `json:"image"` // 图片 base64 可为空
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OverlayPosition string `json:"overlay_position"` //位置 x,y
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Text string `json:"text"` // 文字
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FontName string `json:"font_name"` //字体文件名
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FontSize int `json:"font_size"`
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FontColor string `json:"font_color"` // r,g,b 颜色
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TextPosition string `json:"text_position"` //x,y 文字在图片上的位置
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imagePath string `json:"-"`
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}
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type OnDemandTrans struct {
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SrcStream string `json:"src_stream"`
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DstStream string `json:"dst_stream"`
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OverlayConfigs []*OverlayConfig `json:"overlay_config"`
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}
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func createTmpImage(image string) (string, error) {
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//通过前缀判断base64图片类型
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var imageType string
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switch {
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case strings.HasPrefix(image, "/9j/"):
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imageType = "jpg"
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case strings.HasPrefix(image, "iVBORw0KGg"):
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imageType = "png"
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case strings.HasPrefix(image, "R0lGODlh"):
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imageType = "gif"
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case strings.HasPrefix(image, "UklGRg"):
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imageType = "webp"
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default:
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return "", fmt.Errorf("不支持的图片类型")
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}
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// 创建一个临时文件
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tempFile, err := os.CreateTemp("./logs", "overlay*."+imageType)
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if err != nil {
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return "", fmt.Errorf("创建临时文件失败")
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}
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// 按照文件类型解码 base64 写入文件
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decodedData, err := base64.StdEncoding.DecodeString(image)
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if err != nil {
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return "", fmt.Errorf("解码 base64 失败")
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}
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// 将解码后的数据写入临时文件
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tempFile.Write(decodedData)
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//文件路径
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filePath := tempFile.Name()
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return filePath, nil
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}
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func rgbToHex(FontColor string) (string, error) {
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rgb := strings.Split(FontColor, ",")
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if len(rgb) == 3 {
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r, _ := strconv.Atoi(rgb[0])
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g, _ := strconv.Atoi(rgb[1])
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b, _ := strconv.Atoi(rgb[2])
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FontColor = fmt.Sprintf("#%02x%02x%02x", r, g, b)
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return FontColor, nil
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} else {
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return "", fmt.Errorf("FontColor 格式不正确")
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}
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}
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func (t *TranscodePlugin) api_transcode_start(w http.ResponseWriter, r *http.Request) {
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//解析出 OverlayConfigs
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//var trans OnDemandTrans
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//err := json.NewDecoder(r.Body).Decode(&trans)
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//if err != nil {
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// http.Error(w, err.Error(), http.StatusBadRequest)
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// return
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//}
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////循环判断
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//for _, overlayConfig := range trans.OverlayConfigs {
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// if overlayConfig.OverlayImage == "" || overlayConfig.Text == "" {
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// http.Error(w, "image_base64 and text is required", http.StatusBadRequest)
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// return
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// }
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// filePath, err := createTmpImage(overlayConfig.OverlayImage)
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// if err != nil {
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// http.Error(w, err.Error(), http.StatusBadRequest)
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// return
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// }
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// overlayConfig.imagePath = filePath
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// overlayConfig.FontName = "./font/" + overlayConfig.FontName
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//
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// // 将 r,g,b 颜色字符串转换为十六进制颜色
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// overlayConfig.FontColor, err = rgbToHex(overlayConfig.FontColor)
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// if err != nil {
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// http.Error(w, "FontColor 格式不正确", http.StatusBadRequest)
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// return
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// }
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//}
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// 1、先叠加,不用管参数
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// 2、参数处理
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//ffmpeg -i input_video.mp4 -i input_image.png -filter_complex "[1:v]drawtext=fontfile=/path/to/font.ttf:fontsize=24:fontcolor=white:x=10:y=10:text='Your Text Here'[img];[0:v][img]overlay=x=100:y=100:enable='between(t,0,5)'" output_video.mp4
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//trans := transcode.NewTransform()
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//trans.(*transcode.Transformer).Start()
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transformer := t.Meta.Transformer()
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trans := transformer.(*transcode.Transformer)
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var cfg config.Transform
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cfg.Output = []struct {
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Target string `desc:"转码目标"`
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StreamPath string
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Conf any
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}{
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{
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Target: "rtmp://127.0.0.1:1935/live/test/h264",
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StreamPath: "live/test/h264",
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Conf: "-loglevel debug -s 480x200 -c:a copy -c:v h264",
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},
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}
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t.Transform("live/test", cfg)
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fmt.Println(trans, cfg)
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w.Write([]byte("ok"))
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}
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