Files
kenaito-media-picker/internal/probe/probe.go
T
odboy c266da2858 fix: 修复扫描/探测/移动三个健壮性问题
- scanner: filepath.Ext 替代 path.Ext,修复 Windows 点号目录名扩展名解析错误
- scanner: Walk 遇不可访问路径仅告警跳过,不再整体中止扫描
- probe: ffprobe 探测增加 30s 超时,避免损坏文件卡死程序
- mover: copyFile 失败时清理半截目标文件,消除双重 Close
- 新增代码审查报告 bug20260814.md
2025-04-07 21:00:37 +08:00

88 lines
2.2 KiB
Go

// Package probe 负责媒体信息探测:图片尺寸读取、ffprobe 视频/音频解析与内嵌解码器释放。
package probe
import (
"context"
"encoding/json"
"fmt"
"os/exec"
"strconv"
"time"
)
// ProbeResult 媒体探测结果(图片/视频/音频通用)
type ProbeResult struct {
HasVideo bool
HasAudio bool
Width int
Height int
Duration float64
VideoCodec string
AudioCodec string
Format string
RawJSON string
}
type streamInfo struct {
Index int `json:"index"`
CodecType string `json:"codec_type"`
CodecName string `json:"codec_name"`
Width int `json:"width"`
Height int `json:"height"`
}
type formatInfo struct {
Duration string `json:"duration"`
Format string `json:"format_name"`
}
type probeOutput struct {
Streams []streamInfo `json:"streams"`
Format formatInfo `json:"format"`
}
// ffprobeTimeout ffprobe 探测超时时间,超时视为探测失败(避免损坏文件卡死程序)
const ffprobeTimeout = 30 * time.Second
// ProbeMediaFile 用 ffprobe 探测媒体文件,一次调用同时获取视频/音频流与时长
func ProbeMediaFile(ffprobePath, filePath string) (*ProbeResult, error) {
ctx, cancel := context.WithTimeout(context.Background(), ffprobeTimeout)
defer cancel()
cmd := exec.CommandContext(ctx, ffprobePath, "-v", "error",
"-show_entries", "stream=index,codec_type,codec_name,width,height:format=duration,format_name",
"-of", "json", filePath)
output, err := cmd.Output()
if err != nil {
return nil, fmt.Errorf("ffprobe failed: %w", err)
}
var out probeOutput
if err := json.Unmarshal(output, &out); err != nil {
return nil, fmt.Errorf("parse ffprobe output: %w", err)
}
res := &ProbeResult{
Format: out.Format.Format,
RawJSON: string(output),
}
if d, err := strconv.ParseFloat(out.Format.Duration, 64); err == nil {
res.Duration = d
}
for _, s := range out.Streams {
switch s.CodecType {
case "video":
res.HasVideo = true
if res.VideoCodec == "" {
res.VideoCodec = s.CodecName
}
if res.Width == 0 && s.Width > 0 && s.Height > 0 {
res.Width, res.Height = s.Width, s.Height
}
case "audio":
res.HasAudio = true
if res.AudioCodec == "" {
res.AudioCodec = s.CodecName
}
}
}
return res, nil
}