129 lines
3.1 KiB
Go
129 lines
3.1 KiB
Go
package model
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import (
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"go-common/library/time"
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)
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var (
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_defaultSeg = &Segment{Start: 0, End: DefaultVideoEnd, Cnt: 1, Num: 1, Duration: 0}
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)
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const (
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// segmentLength 分段长度，根据视频时长做分段，单位：毫秒
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segmentLength = int64(6 * 60 * 1000)
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// DefaultVideoEnd 当视频时长不存在或者为0时的默认视频结尾时间点
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DefaultVideoEnd = int64(10 * 60 * 60 * 1000)
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// SubTypeVideo 主题类型
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SubTypeVideo = int32(1)
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// SubStateOpen 主题打开
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SubStateOpen = int32(0)
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// SubStateClosed 主题关闭
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SubStateClosed = int32(1)
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// AttrSubGuest 允许游客弹幕
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AttrSubGuest = uint(0)
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// AttrSubSpolier 允许剧透弹幕
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AttrSubSpolier = uint(1)
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// AttrSubMission 允许活动弹幕
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AttrSubMission = uint(2)
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// AttrSubAdvance 允许高级弹幕
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AttrSubAdvance = uint(3)
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// AttrSubMonitorBefore 弹幕先审后发
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AttrSubMonitorBefore = uint(4)
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// AttrSubMonitorAfter 弹幕先发后审
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AttrSubMonitorAfter = uint(5)
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)
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// Subject dm_subject.
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type Subject struct {
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ID int64 `json:"id"`
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Type int32 `json:"type"`
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Oid int64 `json:"oid"`
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Pid int64 `json:"pid"`
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Mid int64 `json:"mid"`
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State int32 `json:"state"`
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Attr int32 `json:"attr"`
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ACount int64 `json:"acount"`
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Count int64 `json:"count"`
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MCount int64 `json:"mcount"`
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MoveCnt int64 `json:"move_count"`
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Maxlimit int64 `json:"maxlimit"`
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Childpool int32 `json:"childpool"`
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CTime time.Time `json:"ctime"`
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MTime time.Time `json:"mtime"`
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}
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// AttrVal return val of subject'attr.
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func (s *Subject) AttrVal(bit uint) int32 {
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return (s.Attr >> bit) & int32(1)
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}
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// AttrSet set val of subject'attr.
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func (s *Subject) AttrSet(v int32, bit uint) {
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s.Attr = s.Attr&(^(1 << bit)) | (v << bit)
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}
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// Segment dm segment struct
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type Segment struct {
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Start int64 `json:"ps"` // 分段起始时间
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End int64 `json:"pe"` // 分段结束时间
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Cnt int64 `json:"cnt"` // 总分段数
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Num int64 `json:"num"` // 当前第几段
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Duration int64 `json:"duration"` // 视频总时长
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}
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// SegmentInfo get segment info by start time and video duration.
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func SegmentInfo(ps, duration int64) (s *Segment) {
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var cnt, num, pe int64
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if duration == 0 {
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s = _defaultSeg
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return
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}
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cnt = duration / segmentLength
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if duration%segmentLength > 0 {
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cnt++
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}
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for i := int64(0); i < cnt; i++ {
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if ps >= i*segmentLength && ps < (i+1)*segmentLength {
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ps = i * segmentLength
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pe = (i + 1) * segmentLength
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num = i + 1
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}
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}
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if pe > duration {
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pe = duration
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}
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if ps > duration {
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ps = duration
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pe = duration
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num = cnt
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}
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s = &Segment{
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Start: ps,
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End: pe,
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Cnt: cnt,
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Num: num,
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Duration: duration,
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}
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return
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}
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// SegmentPoint 根据当前段数和视频总时长计算分段的起始时间点
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func SegmentPoint(num, duration int64) (ps, pe int64) {
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if duration == 0 {
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ps = 0
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pe = DefaultVideoEnd
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return
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}
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pe = num * segmentLength
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ps = pe - segmentLength
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if pe > duration {
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pe = duration
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}
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if ps < 0 {
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ps = 0
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}
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return
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}
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