mirror of
https://github.com/langhuihui/monibuca.git
synced 2025-09-27 01:15:52 +08:00
feat: batch snap from mp4 file
This commit is contained in:
@@ -2,6 +2,7 @@ package plugin_crontab
|
||||
|
||||
import (
|
||||
"context"
|
||||
"errors"
|
||||
"fmt"
|
||||
"sort"
|
||||
"strings"
|
||||
@@ -327,11 +328,9 @@ func (ct *CrontabPlugin) ListRecordPlanStreams(ctx context.Context, req *cronpb.
|
||||
}
|
||||
|
||||
func (ct *CrontabPlugin) AddRecordPlanStream(ctx context.Context, req *cronpb.PlanStream) (*cronpb.Response, error) {
|
||||
if req.PlanId == 0 {
|
||||
return &cronpb.Response{
|
||||
Code: 400,
|
||||
Message: "record_plan_id is required",
|
||||
}, nil
|
||||
planId := 1
|
||||
if req.PlanId > 0 {
|
||||
planId = int(req.PlanId)
|
||||
}
|
||||
|
||||
if strings.TrimSpace(req.StreamPath) == "" {
|
||||
@@ -342,7 +341,7 @@ func (ct *CrontabPlugin) AddRecordPlanStream(ctx context.Context, req *cronpb.Pl
|
||||
}
|
||||
|
||||
// 从内存中获取录制计划
|
||||
plan, ok := ct.recordPlans.Get(uint(req.PlanId))
|
||||
plan, ok := ct.recordPlans.Get(uint(planId))
|
||||
if !ok {
|
||||
return &cronpb.Response{
|
||||
Code: 404,
|
||||
@@ -353,7 +352,7 @@ func (ct *CrontabPlugin) AddRecordPlanStream(ctx context.Context, req *cronpb.Pl
|
||||
// 检查是否已存在相同的记录
|
||||
var count int64
|
||||
searchModel := pkg.RecordPlanStream{
|
||||
PlanID: uint(req.PlanId),
|
||||
PlanID: uint(planId),
|
||||
StreamPath: req.StreamPath,
|
||||
}
|
||||
if err := ct.DB.Model(&searchModel).Where(&searchModel).Count(&count).Error; err != nil {
|
||||
@@ -370,10 +369,16 @@ func (ct *CrontabPlugin) AddRecordPlanStream(ctx context.Context, req *cronpb.Pl
|
||||
}, nil
|
||||
}
|
||||
|
||||
fragment := "60s"
|
||||
|
||||
if req.Fragment != "" {
|
||||
fragment = req.Fragment
|
||||
}
|
||||
|
||||
stream := &pkg.RecordPlanStream{
|
||||
PlanID: uint(req.PlanId),
|
||||
StreamPath: req.StreamPath,
|
||||
Fragment: req.Fragment,
|
||||
Fragment: fragment,
|
||||
FilePath: req.FilePath,
|
||||
Enable: req.Enable,
|
||||
RecordType: req.RecordType,
|
||||
@@ -406,11 +411,9 @@ func (ct *CrontabPlugin) AddRecordPlanStream(ctx context.Context, req *cronpb.Pl
|
||||
}
|
||||
|
||||
func (ct *CrontabPlugin) UpdateRecordPlanStream(ctx context.Context, req *cronpb.PlanStream) (*cronpb.Response, error) {
|
||||
if req.PlanId == 0 {
|
||||
return &cronpb.Response{
|
||||
Code: 400,
|
||||
Message: "record_plan_id is required",
|
||||
}, nil
|
||||
planId := 1
|
||||
if req.PlanId > 0 {
|
||||
planId = int(req.PlanId)
|
||||
}
|
||||
|
||||
if strings.TrimSpace(req.StreamPath) == "" {
|
||||
@@ -423,7 +426,7 @@ func (ct *CrontabPlugin) UpdateRecordPlanStream(ctx context.Context, req *cronpb
|
||||
// 检查记录是否存在
|
||||
var existingStream pkg.RecordPlanStream
|
||||
searchModel := pkg.RecordPlanStream{
|
||||
PlanID: uint(req.PlanId),
|
||||
PlanID: uint(planId),
|
||||
StreamPath: req.StreamPath,
|
||||
}
|
||||
if err := ct.DB.Where(&searchModel).First(&existingStream).Error; err != nil {
|
||||
@@ -524,7 +527,7 @@ func (ct *CrontabPlugin) RemoveRecordPlanStream(ctx context.Context, req *cronpb
|
||||
// 停止所有相关的定时任务
|
||||
ct.crontabs.Range(func(crontab *Crontab) bool {
|
||||
if crontab.RecordPlanStream.StreamPath == req.StreamPath && crontab.RecordPlan.ID == uint(req.PlanId) {
|
||||
crontab.Stop(nil)
|
||||
crontab.Stop(errors.New("remove record plan"))
|
||||
}
|
||||
return true
|
||||
})
|
||||
|
@@ -359,13 +359,16 @@ func (cron *Crontab) startRecording() {
|
||||
|
||||
// 发送开始录制请求
|
||||
resp, err := http.Post(fmt.Sprintf("http://%s/mp4/api/start/%s", addr, cron.StreamPath), "application/json", bytes.NewBuffer(jsonBody))
|
||||
cron.Debug("record request", "url is ", fmt.Sprintf("http://%s/mp4/api/start/%s", addr, cron.StreamPath), "jsonBody is ", string(jsonBody))
|
||||
if err != nil {
|
||||
time.Sleep(time.Second)
|
||||
cron.Error("开始录制失败: %v", err)
|
||||
return
|
||||
}
|
||||
defer resp.Body.Close()
|
||||
|
||||
if resp.StatusCode != http.StatusOK {
|
||||
time.Sleep(time.Second)
|
||||
cron.Error("开始录制失败,HTTP状态码: %d", resp.StatusCode)
|
||||
return
|
||||
}
|
||||
|
@@ -1,6 +1,7 @@
|
||||
package plugin_crontab
|
||||
|
||||
import (
|
||||
"gorm.io/gorm"
|
||||
"strings"
|
||||
|
||||
"m7s.live/v5/plugin/crontab/pkg"
|
||||
@@ -9,16 +10,44 @@ import (
|
||||
// InitDefaultPlans 初始化默认的录制计划
|
||||
// 包括工作日录制计划和周末录制计划
|
||||
func (ct *CrontabPlugin) InitDefaultPlans() {
|
||||
|
||||
// 创建全天24小时录制计划(七天全天录制)的计划字符串
|
||||
allDayPlanStr := buildPlanString(true, true, true, true, true, true, true) // 周日到周六
|
||||
|
||||
// 检查是否已存在相同内容的工作日录制计划
|
||||
var count int64
|
||||
if err := ct.DB.Model(&pkg.RecordPlan{}).Where("plan = ?", allDayPlanStr).Count(&count).Error; err != nil {
|
||||
ct.Error("检查24小时录制计划失败: %v", err)
|
||||
} else if count == 0 {
|
||||
// 不存在相同内容的计划,创建新计划
|
||||
workdayPlan := &pkg.RecordPlan{
|
||||
Model: gorm.Model{ID: 1},
|
||||
Name: "七天全天录制计划",
|
||||
Plan: allDayPlanStr,
|
||||
Enable: true,
|
||||
}
|
||||
|
||||
if err := ct.DB.Create(workdayPlan).Error; err != nil {
|
||||
ct.Error("创建七天全天录制计划失败: %v", err)
|
||||
} else {
|
||||
ct.Info("成功创建七天全天录制计划")
|
||||
// 添加到内存中
|
||||
ct.recordPlans.Add(workdayPlan)
|
||||
}
|
||||
} else {
|
||||
ct.Info("已存在相同内容的七天全天录制计划,跳过创建")
|
||||
}
|
||||
|
||||
// 创建工作日录制计划(周一到周五全天录制)的计划字符串
|
||||
workdayPlanStr := buildPlanString(false, true, true, true, true, true, false) // 周一到周五
|
||||
|
||||
// 检查是否已存在相同内容的工作日录制计划
|
||||
var count int64
|
||||
if err := ct.DB.Model(&pkg.RecordPlan{}).Where("plan = ?", workdayPlanStr).Count(&count).Error; err != nil {
|
||||
ct.Error("检查工作日录制计划失败: %v", err)
|
||||
} else if count == 0 {
|
||||
// 不存在相同内容的计划,创建新计划
|
||||
workdayPlan := &pkg.RecordPlan{
|
||||
Model: gorm.Model{ID: 2},
|
||||
Name: "工作日录制计划",
|
||||
Plan: workdayPlanStr,
|
||||
Enable: true,
|
||||
@@ -44,6 +73,7 @@ func (ct *CrontabPlugin) InitDefaultPlans() {
|
||||
} else if count == 0 {
|
||||
// 不存在相同内容的计划,创建新计划
|
||||
weekendPlan := &pkg.RecordPlan{
|
||||
Model: gorm.Model{ID: 3},
|
||||
Name: "周末录制计划",
|
||||
Plan: weekendPlanStr,
|
||||
Enable: true,
|
||||
@@ -69,7 +99,7 @@ func buildPlanString(sun, mon, tue, wed, thu, fri, sat bool) string {
|
||||
|
||||
// 按照周日、周一、...、周六的顺序
|
||||
days := []bool{sun, mon, tue, wed, thu, fri, sat}
|
||||
|
||||
|
||||
for _, record := range days {
|
||||
if record {
|
||||
// 该天录制,24小时都为1
|
||||
|
@@ -1,9 +1,40 @@
|
||||
-- 初始化录制计划的 SQL 脚本
|
||||
-- 包含两个预设计划:工作日全天录制和周末全天录制
|
||||
-- 包含三个预设计划:工作日全天录制,周末全天录制,每天全天录制
|
||||
|
||||
-- 24小时不间断录制计划(每天全天录制)
|
||||
INSERT INTO record_plans (id, name, plan, enable, created_at, updated_at)
|
||||
SELECT 1,'每天全天录制',
|
||||
-- 168位的计划字符串,格式为:
|
||||
-- 前24位为周日,接着24位为周一,以此类推到周六
|
||||
-- 0表示不录制,1表示录制
|
||||
-- 工作日录制:周一到周五全为1,周六周日全为0
|
||||
CONCAT(
|
||||
-- 周日(0):24个1
|
||||
REPEAT('1', 24),
|
||||
-- 周一(1):24个1
|
||||
REPEAT('1', 24),
|
||||
-- 周二(2):24个1
|
||||
REPEAT('1', 24),
|
||||
-- 周三(3):24个1
|
||||
REPEAT('1', 24),
|
||||
-- 周四(4):24个1
|
||||
REPEAT('1', 24),
|
||||
-- 周五(5):24个1
|
||||
REPEAT('1', 24),
|
||||
-- 周六(6):24个1
|
||||
REPEAT('1', 24)
|
||||
),
|
||||
TRUE, -- 启用状态
|
||||
NOW(), -- 创建时间
|
||||
NOW() -- 更新时间
|
||||
WHERE NOT EXISTS (
|
||||
SELECT 1 FROM record_plans WHERE name = '每天全天录制'
|
||||
);
|
||||
|
||||
|
||||
-- 工作日计划(周一到周五全天录制)
|
||||
INSERT INTO record_plans (name, plan, enable, created_at, updated_at)
|
||||
SELECT '工作日录制计划',
|
||||
INSERT INTO record_plans (id,name, plan, enable, created_at, updated_at)
|
||||
SELECT 2,'工作日录制计划',
|
||||
-- 168位的计划字符串,格式为:
|
||||
-- 前24位为周日,接着24位为周一,以此类推到周六
|
||||
-- 0表示不录制,1表示录制
|
||||
@@ -32,8 +63,8 @@ WHERE NOT EXISTS (
|
||||
);
|
||||
|
||||
-- 周末计划(周六和周日全天录制)
|
||||
INSERT INTO record_plans (name, plan, enable, created_at, updated_at)
|
||||
SELECT '周末录制计划',
|
||||
INSERT INTO record_plans (id,name, plan, enable, created_at, updated_at)
|
||||
SELECT 3,'周末录制计划',
|
||||
-- 168位的计划字符串
|
||||
-- 周末录制:周六周日全为1,周一到周五全为0
|
||||
CONCAT(
|
||||
|
@@ -8,7 +8,7 @@ import (
|
||||
type RecordPlan struct {
|
||||
gorm.Model
|
||||
Name string `json:"name" gorm:"default:''"`
|
||||
Plan string `json:"plan" gorm:"type:text"`
|
||||
Plan string `json:"plan" gorm:"type:varchar(255)"`
|
||||
Enable bool `json:"enable" gorm:"default:false"` // 是否启用
|
||||
}
|
||||
|
||||
|
@@ -9,7 +9,7 @@ import (
|
||||
type RecordPlanStream struct {
|
||||
PlanID uint `json:"plan_id" gorm:"primaryKey;type:bigint;not null"` // 录制计划ID
|
||||
StreamPath string `json:"stream_path" gorm:"primaryKey;type:varchar(255)"`
|
||||
Fragment string `json:"fragment" gorm:"type:text"`
|
||||
Fragment string `json:"fragment" gorm:"type:varchar(255)"`
|
||||
FilePath string `json:"file_path" gorm:"type:varchar(255)"`
|
||||
CreatedAt time.Time
|
||||
UpdatedAt time.Time
|
||||
|
@@ -9,8 +9,10 @@ import (
|
||||
_ "image/jpeg"
|
||||
"net/http"
|
||||
"os"
|
||||
"os/exec"
|
||||
"path/filepath"
|
||||
"runtime"
|
||||
"sort"
|
||||
"strconv"
|
||||
"strings"
|
||||
"time"
|
||||
@@ -158,7 +160,7 @@ func (p *SnapPlugin) doSnap(rw http.ResponseWriter, r *http.Request) {
|
||||
|
||||
// 处理保存逻辑
|
||||
savePath := query.Get("savePath")
|
||||
now := time.Now()
|
||||
now := time.Now().UTC()
|
||||
if savePath != "" {
|
||||
os.Mkdir(savePath, 0755)
|
||||
filename := fmt.Sprintf("%s_%s.jpg", streamPath, now.Format("20060102150405.000"))
|
||||
@@ -255,7 +257,8 @@ func (p *SnapPlugin) querySnap(rw http.ResponseWriter, r *http.Request) {
|
||||
return
|
||||
}
|
||||
|
||||
targetTime := time.Unix(snapTimeUnix+1, 0)
|
||||
// 将时间戳转换为UTC时间,确保与数据库中存储的UTC时间一致
|
||||
targetTime := time.Unix(snapTimeUnix+1, 0).UTC()
|
||||
var record snap_pkg.SnapRecord
|
||||
|
||||
// 查询小于等于目标时间的最近一条记录
|
||||
@@ -363,17 +366,17 @@ func (p *SnapPlugin) batchSnap(rw http.ResponseWriter, r *http.Request) {
|
||||
|
||||
// 检查截图时间点是否为空
|
||||
if len(snapTimes) == 0 {
|
||||
p.Warn("no valid snapshot times available",
|
||||
p.Warn("no valid snapshot times available",
|
||||
"streamPath", streamPath,
|
||||
"startTime", startTime.Format(time.RFC3339),
|
||||
"endTime", endTime.Format(time.RFC3339),
|
||||
"granularity", granularity)
|
||||
|
||||
|
||||
response := BatchSnapResponse{
|
||||
Success: false,
|
||||
Message: "No valid snapshot times available. Please check your time range and try again.",
|
||||
}
|
||||
|
||||
|
||||
rw.Header().Set("Content-Type", "application/json")
|
||||
json.NewEncoder(rw).Encode(response)
|
||||
return
|
||||
@@ -408,7 +411,7 @@ func (p *SnapPlugin) calculateSnapTimes(publisher *m7s.Publisher, startTime, end
|
||||
// 检查开始时间是否早于当前时间,如果是,则从当前时间开始
|
||||
now := time.Now()
|
||||
if startTime.Before(now) {
|
||||
p.Info("adjusting start time from past to current time",
|
||||
p.Info("adjusting start time from past to current time",
|
||||
"originalStartTime", startTime.Format(time.RFC3339),
|
||||
"adjustedStartTime", now.Format(time.RFC3339))
|
||||
startTime = now
|
||||
@@ -416,7 +419,7 @@ func (p *SnapPlugin) calculateSnapTimes(publisher *m7s.Publisher, startTime, end
|
||||
|
||||
// 检查结束时间是否晚于开始时间
|
||||
if endTime.Before(startTime) || endTime.Equal(startTime) {
|
||||
p.Warn("invalid time range: end time is not after start time",
|
||||
p.Warn("invalid time range: end time is not after start time",
|
||||
"startTime", startTime.Format(time.RFC3339),
|
||||
"endTime", endTime.Format(time.RFC3339))
|
||||
return nil
|
||||
@@ -455,17 +458,17 @@ func (p *SnapPlugin) calculateSnapTimes(publisher *m7s.Publisher, startTime, end
|
||||
if idrRing != nil {
|
||||
// 将时间戳转换为time.Time(从纳秒转为秒)
|
||||
keyframeTime := time.Unix(0, int64(idrRing.Value.Timestamp))
|
||||
|
||||
|
||||
// 检查是否在指定时间范围内
|
||||
if (keyframeTime.Equal(startTime) || keyframeTime.After(startTime)) &&
|
||||
(keyframeTime.Equal(endTime) || keyframeTime.Before(endTime)) {
|
||||
if (keyframeTime.Equal(startTime) || keyframeTime.After(startTime)) &&
|
||||
(keyframeTime.Equal(endTime) || keyframeTime.Before(endTime)) {
|
||||
snapTimes = append(snapTimes, keyframeTime)
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
videoTrack.RUnlock()
|
||||
|
||||
|
||||
// 如果没有找到关键帧,但有GOP信息,则使用估算的GOP间隔生成时间点
|
||||
if len(snapTimes) == 0 && gopDuration > 0 {
|
||||
p.Info("no keyframes found in range, using estimated GOP interval")
|
||||
@@ -509,12 +512,12 @@ func (p *SnapPlugin) executeBatchSnapTask(publisher *m7s.Publisher, streamPath s
|
||||
now := time.Now()
|
||||
if firstSnapTime.After(now) {
|
||||
waitDuration := firstSnapTime.Sub(now)
|
||||
p.Info("batch snap task scheduled for future",
|
||||
"streamPath", streamPath,
|
||||
"totalSnapshots", len(snapTimes),
|
||||
p.Info("batch snap task scheduled for future",
|
||||
"streamPath", streamPath,
|
||||
"totalSnapshots", len(snapTimes),
|
||||
"startTime", firstSnapTime.Format(time.RFC3339),
|
||||
"waitDuration", waitDuration.String())
|
||||
|
||||
|
||||
// 等待到开始时间
|
||||
time.Sleep(waitDuration)
|
||||
}
|
||||
@@ -531,7 +534,7 @@ func (p *SnapPlugin) executeBatchSnapTask(publisher *m7s.Publisher, streamPath s
|
||||
for i, snapTime := range snapTimes {
|
||||
// 打印日志,记录当前截图时间和进度
|
||||
p.Debug("taking snapshot", "progress", fmt.Sprintf("%d/%d", i+1, len(snapTimes)), "time", snapTime.Format(time.RFC3339))
|
||||
|
||||
|
||||
// 当前实现不支持指定时间截图,所以这里只能截取当前帧
|
||||
// 注意:这里每次都会重新创建一个读取器,确保获取到最新的帧
|
||||
buf, err := p.snap(publisher, nil)
|
||||
@@ -540,7 +543,7 @@ func (p *SnapPlugin) executeBatchSnapTask(publisher *m7s.Publisher, streamPath s
|
||||
failCount++
|
||||
continue
|
||||
}
|
||||
|
||||
|
||||
// 如果是按间隔截图,每次截图后等待指定时间
|
||||
if granularity > 0 && i < len(snapTimes)-1 { // 不是最后一帧才需要等待
|
||||
// 等待granularity秒,确保下一次截图与当前截图有足够的时间差
|
||||
@@ -565,7 +568,7 @@ func (p *SnapPlugin) executeBatchSnapTask(publisher *m7s.Publisher, streamPath s
|
||||
record := snap_pkg.SnapRecord{
|
||||
StreamName: streamPath,
|
||||
SnapMode: 3, // 批量截图模式
|
||||
SnapTime: snapTime,
|
||||
SnapTime: snapTime.UTC(),
|
||||
SnapPath: filePath,
|
||||
}
|
||||
if err := p.DB.Create(&record).Error; err != nil {
|
||||
@@ -579,20 +582,392 @@ func (p *SnapPlugin) executeBatchSnapTask(publisher *m7s.Publisher, streamPath s
|
||||
// 记录任务完成时间和结果
|
||||
taskEndTime := time.Now()
|
||||
taskDuration := taskEndTime.Sub(taskStartTime)
|
||||
p.Info("batch snap task completed",
|
||||
"streamPath", streamPath,
|
||||
"total", len(snapTimes),
|
||||
"success", successCount,
|
||||
"failed", failCount,
|
||||
p.Info("batch snap task completed",
|
||||
"streamPath", streamPath,
|
||||
"total", len(snapTimes),
|
||||
"success", successCount,
|
||||
"failed", failCount,
|
||||
"duration", taskDuration.String())
|
||||
}
|
||||
|
||||
// batchPlayBack 处理从MP4录像文件中按时间范围和颗粒度进行截图的请求
|
||||
func (p *SnapPlugin) batchPlayBack(rw http.ResponseWriter, r *http.Request) {
|
||||
// 只接受GET请求
|
||||
if r.Method != http.MethodGet {
|
||||
http.Error(rw, "Method not allowed", http.StatusMethodNotAllowed)
|
||||
return
|
||||
}
|
||||
|
||||
// 检查数据库连接
|
||||
if p.DB == nil {
|
||||
responseWithError(rw, "数据库未初始化")
|
||||
return
|
||||
}
|
||||
|
||||
// 获取streamPath
|
||||
streamPath := r.PathValue("streamPath")
|
||||
if streamPath == "" {
|
||||
responseWithError(rw, "streamPath参数必须提供")
|
||||
return
|
||||
}
|
||||
|
||||
// 获取查询参数
|
||||
query := r.URL.Query()
|
||||
|
||||
// 解析时间范围
|
||||
startTime, endTime, err := util.TimeRangeQueryParse(query)
|
||||
if err != nil {
|
||||
responseWithError(rw, "无效的时间范围: "+err.Error())
|
||||
return
|
||||
}
|
||||
|
||||
// 验证时间范围
|
||||
if endTime.Before(startTime) {
|
||||
responseWithError(rw, "结束时间必须晚于开始时间")
|
||||
return
|
||||
}
|
||||
|
||||
// 获取granularity参数
|
||||
granularity := 0
|
||||
granularityStr := query.Get("granularity")
|
||||
if granularityStr != "" {
|
||||
granularityVal, err := strconv.Atoi(granularityStr)
|
||||
if err != nil {
|
||||
responseWithError(rw, "无效的颗粒度格式: "+err.Error())
|
||||
return
|
||||
}
|
||||
if granularityVal < 0 {
|
||||
responseWithError(rw, "颗粒度必须为非负数")
|
||||
return
|
||||
}
|
||||
granularity = granularityVal
|
||||
}
|
||||
|
||||
// 创建保存目录
|
||||
savePath := filepath.Join("snap", "playback", streamPath)
|
||||
os.MkdirAll(savePath, 0755)
|
||||
savePath = strings.ReplaceAll(savePath, "/", "_")
|
||||
os.MkdirAll(savePath, 0755)
|
||||
|
||||
// 立即返回成功响应,表示任务已接收
|
||||
response := BatchSnapResponse{
|
||||
Success: true,
|
||||
Message: fmt.Sprintf("回放截图任务已开始。正在后台处理。时间范围: %s 到 %s (使用参数 start 和 end)", startTime.Format(time.RFC3339), endTime.Format(time.RFC3339)),
|
||||
}
|
||||
|
||||
rw.Header().Set("Content-Type", "application/json")
|
||||
json.NewEncoder(rw).Encode(response)
|
||||
|
||||
// 在后台异步执行截图任务
|
||||
go p.executePlayBackSnapTask(streamPath, startTime, endTime, savePath, granularity)
|
||||
}
|
||||
|
||||
// executePlayBackSnapTask 在后台执行从MP4录像文件中截图的任务
|
||||
func (p *SnapPlugin) executePlayBackSnapTask(streamPath string, startTime, endTime time.Time, savePath string, granularity int) {
|
||||
// 记录任务开始时间
|
||||
taskStartTime := time.Now()
|
||||
p.Info("playback snap task started", "streamPath", streamPath, "startTime", startTime, "endTime", endTime)
|
||||
|
||||
// 从数据库中查询指定时间范围内的MP4录像文件
|
||||
var streams []m7s.RecordStream
|
||||
queryRecord := m7s.RecordStream{
|
||||
Type: "mp4",
|
||||
}
|
||||
|
||||
// 查询条件:结束时间大于请求的开始时间,开始时间小于请求的结束时间,流路径匹配
|
||||
p.DB.Where(&queryRecord).Find(&streams, "end_time>? AND start_time<? AND stream_path=?", startTime, endTime, streamPath)
|
||||
|
||||
// 检查是否找到录像文件
|
||||
if len(streams) == 0 {
|
||||
p.Warn("no mp4 records found for playback snap", "streamPath", streamPath, "startTime", startTime, "endTime", endTime)
|
||||
return
|
||||
}
|
||||
|
||||
p.Info("found mp4 records for playback snap", "streamPath", streamPath, "count", len(streams))
|
||||
|
||||
// 按开始时间排序录像文件,确保时间连续性
|
||||
sort.Slice(streams, func(i, j int) bool {
|
||||
return streams[i].StartTime.Before(streams[j].StartTime)
|
||||
})
|
||||
|
||||
// 全局截图时间点列表
|
||||
var allSnapTimes []time.Time
|
||||
|
||||
// 如果颜粒度小于等于0,则对每个文件提取关键帧
|
||||
if granularity <= 0 {
|
||||
// 对每个文件分别提取关键帧
|
||||
for _, stream := range streams {
|
||||
// 检查文件是否存在
|
||||
if _, err := os.Stat(stream.FilePath); os.IsNotExist(err) {
|
||||
p.Warn("mp4 file not found", "path", stream.FilePath)
|
||||
continue
|
||||
}
|
||||
|
||||
// 计算此文件的有效时间范围(与请求时间范围的交集)
|
||||
fileStartTime := stream.StartTime
|
||||
if fileStartTime.Before(startTime) {
|
||||
fileStartTime = startTime
|
||||
}
|
||||
|
||||
fileEndTime := stream.EndTime
|
||||
if fileEndTime.After(endTime) {
|
||||
fileEndTime = endTime
|
||||
}
|
||||
|
||||
// 提取关键帧
|
||||
keyFrameTimes, err := p.extractKeyFrameTimes(stream.FilePath, fileStartTime, fileEndTime)
|
||||
if err != nil {
|
||||
p.Error("extract key frames failed", "error", err.Error())
|
||||
// 如果提取失败,使用默认的每2秒截图
|
||||
defaultGranularity := 2 * time.Second
|
||||
for t := fileStartTime; t.Before(fileEndTime); t = t.Add(defaultGranularity) {
|
||||
allSnapTimes = append(allSnapTimes, t)
|
||||
}
|
||||
} else {
|
||||
// 将关键帧时间点添加到全局列表
|
||||
allSnapTimes = append(allSnapTimes, keyFrameTimes...)
|
||||
}
|
||||
}
|
||||
} else {
|
||||
// 当指定颜粒度时,基于整个时间范围生成均匀的截图时间点
|
||||
// 这样可以确保在不同文件之间保持一致的颜粒度
|
||||
for t := startTime; t.Before(endTime); t = t.Add(time.Duration(granularity) * time.Second) {
|
||||
allSnapTimes = append(allSnapTimes, t)
|
||||
}
|
||||
}
|
||||
|
||||
// 按时间排序并去重
|
||||
sort.Slice(allSnapTimes, func(i, j int) bool {
|
||||
return allSnapTimes[i].Before(allSnapTimes[j])
|
||||
})
|
||||
|
||||
// 去除重复的时间点(如果有)
|
||||
var uniqueSnapTimes []time.Time
|
||||
if len(allSnapTimes) > 0 {
|
||||
uniqueSnapTimes = append(uniqueSnapTimes, allSnapTimes[0])
|
||||
for i := 1; i < len(allSnapTimes); i++ {
|
||||
// 如果与前一个时间点不同,则添加
|
||||
if !allSnapTimes[i].Equal(allSnapTimes[i-1]) {
|
||||
uniqueSnapTimes = append(uniqueSnapTimes, allSnapTimes[i])
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
p.Info("generated snapshot times", "count", len(uniqueSnapTimes))
|
||||
|
||||
// 处理每个截图时间点
|
||||
var successCount, failCount int
|
||||
for _, snapTime := range uniqueSnapTimes {
|
||||
// 找到包含该时间点的录像文件
|
||||
var targetStream *m7s.RecordStream
|
||||
for j := range streams {
|
||||
if (snapTime.Equal(streams[j].StartTime) || snapTime.After(streams[j].StartTime)) &&
|
||||
(snapTime.Equal(streams[j].EndTime) || snapTime.Before(streams[j].EndTime)) {
|
||||
targetStream = &streams[j]
|
||||
break
|
||||
}
|
||||
}
|
||||
|
||||
// 如果找不到对应的文件,跳过该时间点
|
||||
if targetStream == nil {
|
||||
p.Warn("no mp4 file found for time point", "time", snapTime.Format(time.RFC3339))
|
||||
failCount++
|
||||
continue
|
||||
}
|
||||
|
||||
// 检查文件是否存在
|
||||
if _, err := os.Stat(targetStream.FilePath); os.IsNotExist(err) {
|
||||
p.Warn("mp4 file not found", "path", targetStream.FilePath)
|
||||
failCount++
|
||||
continue
|
||||
}
|
||||
|
||||
// 计算在文件中的时间偏移(毫秒)
|
||||
// 使用文件的duration字段来计算时间偏移
|
||||
// 首先计算截图时间点在整个文件时间范围内的相对位置
|
||||
fileStartTime := targetStream.StartTime
|
||||
fileEndTime := targetStream.EndTime
|
||||
fileDuration := targetStream.Duration
|
||||
|
||||
// 如果数据库中的duration字段有效,则使用它来计算时间偏移
|
||||
var timeOffset int64
|
||||
if fileDuration > 0 {
|
||||
// 注意:duration字段存储的是毫秒值,如 69792 表示 69.792 秒
|
||||
// 计算截图时间点在整个文件时间范围内的相对位置(百分比)
|
||||
totalDuration := fileEndTime.Sub(fileStartTime).Milliseconds()
|
||||
if totalDuration > 0 {
|
||||
position := float64(snapTime.Sub(fileStartTime).Milliseconds()) / float64(totalDuration)
|
||||
// 根据百分比位置和实际duration计算出时间偏移
|
||||
// duration已经是毫秒值,直接使用
|
||||
timeOffset = int64(position * float64(fileDuration))
|
||||
p.Debug("using duration for time offset calculation", "position", position, "duration_ms", fileDuration, "timeOffset_ms", timeOffset)
|
||||
} else {
|
||||
// 如果计算出问题,回退到直接使用时间差
|
||||
timeOffset = snapTime.Sub(fileStartTime).Milliseconds()
|
||||
p.Debug("fallback to direct time difference", "timeOffset", timeOffset)
|
||||
}
|
||||
} else {
|
||||
// 如果duration无效,则使用时间差
|
||||
timeOffset = snapTime.Sub(fileStartTime).Milliseconds()
|
||||
p.Debug("invalid duration, using time difference", "timeOffset", timeOffset)
|
||||
}
|
||||
|
||||
// 使用FFmpeg从MP4文件中截取指定时间点的图片
|
||||
// 文件名包含截图时间点和颜粒度信息,避免不同颜粒度的截图相互覆盖
|
||||
var granularityInfo string
|
||||
if granularity <= 0 {
|
||||
granularityInfo = "keyframe"
|
||||
} else {
|
||||
granularityInfo = fmt.Sprintf("%ds", granularity)
|
||||
}
|
||||
|
||||
filename := fmt.Sprintf("%s_%s_%s.jpg",
|
||||
streamPath,
|
||||
snapTime.Format("20060102150405"),
|
||||
granularityInfo)
|
||||
filename = strings.ReplaceAll(filename, "/", "_")
|
||||
filePath := filepath.Join(savePath, filename)
|
||||
|
||||
// 调用截图函数
|
||||
err := p.snapFromMP4(targetStream.FilePath, filePath, timeOffset)
|
||||
if err != nil {
|
||||
p.Error("playback snap failed", "error", err.Error(), "time", snapTime.Format(time.RFC3339))
|
||||
failCount++
|
||||
continue
|
||||
}
|
||||
|
||||
// 保存截图记录到数据库
|
||||
if p.DB != nil {
|
||||
record := snap_pkg.SnapRecord{
|
||||
StreamName: streamPath,
|
||||
SnapMode: 4, // 回放截图模式
|
||||
SnapTime: snapTime,
|
||||
SnapPath: filePath,
|
||||
}
|
||||
if err := p.DB.Create(&record).Error; err != nil {
|
||||
p.Error("save playback snapshot record failed", "error", err.Error())
|
||||
}
|
||||
}
|
||||
|
||||
successCount++
|
||||
}
|
||||
|
||||
// 记录任务完成时间和结果
|
||||
taskEndTime := time.Now()
|
||||
taskDuration := taskEndTime.Sub(taskStartTime)
|
||||
p.Info("playback snap task completed",
|
||||
"streamPath", streamPath,
|
||||
"success", successCount,
|
||||
"failed", failCount,
|
||||
"duration", taskDuration.String())
|
||||
}
|
||||
|
||||
// snapFromMP4 从MP4文件中截取指定时间点的图片
|
||||
func (p *SnapPlugin) snapFromMP4(mp4FilePath, outputPath string, timeOffsetMs int64) error {
|
||||
// 将时间偏移转换为秒
|
||||
timeOffsetSec := float64(timeOffsetMs) / 1000.0
|
||||
|
||||
// 构建ffmpeg命令
|
||||
cmd := exec.Command(
|
||||
"ffmpeg",
|
||||
"-hide_banner",
|
||||
"-ss", fmt.Sprintf("%f", timeOffsetSec), // 设置时间偏移
|
||||
"-i", mp4FilePath, // 输入文件
|
||||
"-vframes", "1", // 只截取一帧
|
||||
"-q:v", "2", // 设置图片质量
|
||||
"-y", // 覆盖输出文件
|
||||
outputPath, // 输出文件路径
|
||||
)
|
||||
|
||||
// 执行命令
|
||||
output, err := cmd.CombinedOutput()
|
||||
if err != nil {
|
||||
p.Error("ffmpeg command failed", "error", err.Error(), "output", string(output))
|
||||
return fmt.Errorf("ffmpeg error: %s, output: %s", err.Error(), string(output))
|
||||
}
|
||||
|
||||
return nil
|
||||
}
|
||||
|
||||
// extractKeyFrameTimes 从MP4文件中提取关键帧时间点
|
||||
func (p *SnapPlugin) extractKeyFrameTimes(mp4FilePath string, startTime, endTime time.Time) ([]time.Time, error) {
|
||||
// 使用FFmpeg的-skip_frame nokey参数和-show_entries frame=pkt_pts_time参数提取关键帧时间
|
||||
cmd := exec.Command(
|
||||
"ffprobe",
|
||||
"-v", "quiet",
|
||||
"-select_streams", "v",
|
||||
"-skip_frame", "nokey", // 只处理关键帧
|
||||
"-show_entries", "frame=pkt_pts_time", // 显示帧的时间戳
|
||||
"-of", "csv=p=0", // 输出为CSV格式
|
||||
"-i", mp4FilePath,
|
||||
)
|
||||
|
||||
// 执行命令
|
||||
output, err := cmd.CombinedOutput()
|
||||
if err != nil {
|
||||
p.Error("ffprobe command failed", "error", err.Error(), "output", string(output))
|
||||
return nil, fmt.Errorf("ffprobe error: %s", err.Error())
|
||||
}
|
||||
|
||||
// 解析输出结果,提取时间戳
|
||||
lines := strings.Split(string(output), "\n")
|
||||
|
||||
// 获取MP4文件的开始时间信息
|
||||
// 注意:ffprobe返回的时间戳是相对于文件开始的秒数
|
||||
// 我们需要将其转换为绝对时间
|
||||
fileStartTimeUnix := time.Time{}
|
||||
// 使用数据库中记录的文件开始时间
|
||||
// 查询数据库获取文件信息
|
||||
var fileInfo m7s.RecordStream
|
||||
if err := p.DB.Where("file_path = ?", mp4FilePath).First(&fileInfo).Error; err == nil {
|
||||
fileStartTimeUnix = fileInfo.StartTime
|
||||
} else {
|
||||
p.Warn("failed to get file start time from database, using request start time", "error", err.Error())
|
||||
fileStartTimeUnix = startTime
|
||||
}
|
||||
|
||||
p.Info("file start time", "time", fileStartTimeUnix.Format(time.RFC3339))
|
||||
|
||||
// 存储关键帧时间点
|
||||
var keyFrameTimes []time.Time
|
||||
|
||||
// 处理每一行输出
|
||||
for _, line := range lines {
|
||||
line = strings.TrimSpace(line)
|
||||
if line == "" {
|
||||
continue
|
||||
}
|
||||
|
||||
// 将时间戳转换为浮点数(秒)
|
||||
timeOffsetSec, err := strconv.ParseFloat(line, 64)
|
||||
if err != nil {
|
||||
p.Warn("invalid time format in ffprobe output", "line", line)
|
||||
continue
|
||||
}
|
||||
|
||||
// 计算实际时间:文件开始时间 + 偏移秒数
|
||||
frameTime := fileStartTimeUnix.Add(time.Duration(timeOffsetSec * float64(time.Second)))
|
||||
|
||||
// 只保留在请求时间范围内的关键帧
|
||||
if (frameTime.Equal(startTime) || frameTime.After(startTime)) &&
|
||||
(frameTime.Equal(endTime) || frameTime.Before(endTime)) {
|
||||
keyFrameTimes = append(keyFrameTimes, frameTime)
|
||||
}
|
||||
}
|
||||
|
||||
// 如果没有找到关键帧,返回错误
|
||||
if len(keyFrameTimes) == 0 {
|
||||
return nil, fmt.Errorf("no key frames found in the specified time range")
|
||||
}
|
||||
|
||||
return keyFrameTimes, nil
|
||||
}
|
||||
|
||||
func (p *SnapPlugin) RegisterHandler() map[string]http.HandlerFunc {
|
||||
return map[string]http.HandlerFunc{
|
||||
"/{streamPath...}": p.doSnap,
|
||||
"/query/{streamPath...}": p.querySnap,
|
||||
"/batch/{streamPath...}": p.batchSnap,
|
||||
"/{streamPath...}": p.doSnap,
|
||||
"/query/{streamPath...}": p.querySnap,
|
||||
"/batch/{streamPath...}": p.batchSnap,
|
||||
"/batchplayback/{streamPath...}": p.batchPlayBack,
|
||||
}
|
||||
}
|
||||
|
||||
|
||||
|
Reference in New Issue
Block a user