m3u8

type AllM3u8 struct {
	MastPlay *M3u8
	Common   *M3u8
}

type EncryptMeta struct {
	SecretKeyUrl string
	IV           string
	Method       string
	SecretKey    string
}

type Event struct {
	*Segment
	Merged         *bool
	MergedFilePath string
	MergeErr       string // 仅在Merged不为nil且*Merged为false时不为nil
	ConvToMP4      *bool
	ConvToMP4Err   string // 仅在ConvToMP4不为nil且*ConvToMP4为false时不为nil
	MP4FilePath    string
}

type M3u8 struct {
	Segments     []Segment
	MastPlayList []PlayInfo
	PlayListType string
	EndList      bool
}

type Model int

type Option struct {
	M3u8Url             string
	Model               Model
	Qps                 int
	WorkerCnt           int
	ChooseStream        func(infos []PlayInfo) PlayInfo
	RemoveSubTs         bool
	FileDir             string
	TsFilePrefix        string
	HttpRequestCallback func(r *http.Request) error
}

type PlayInfo struct {
	M3u8Url    string
	ProgramId  int64
	BandWidth  int64
	Resolution Resolution
}

type Resolution struct {
	Width int64
	High  int64
}

type Result struct {
	Segments       []Segment
	Merged         bool
	MergeErr       string
	MergedFilePath string
	ConvToMP4      bool
	ConvToMP4Err   string
	MP4FilePath    string
}

type Segment struct {
	Idx         int
	Url         string
	Duration    time.Duration
	Sequence    int64
	EncryptMeta EncryptMeta
	ErrMsg      string
}

type Status interface {
	TsTotal() int    // 任务总数
	TsComplete() int // 已经完成的任务数(包含失败和成功的任务)
	Done() <-chan struct{}
	M3u8() AllM3u8
	Event() <-chan Event // 每完成一个任务向此chan中写入
	Shutdown()           // 强制终止下载
}