97 lines
2.2 KiB
Go
97 lines
2.2 KiB
Go
package video
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import (
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"time"
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"github.com/photoprism/photoprism/pkg/fs"
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"github.com/photoprism/photoprism/pkg/media"
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)
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// Info represents video file information.
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type Info struct {
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FileName string
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FileSize int64
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FileType fs.Type
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MediaType media.Type
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ThumbOffset int64
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ThumbMimeType string
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VideoOffset int64
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VideoMimeType string
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VideoType Type
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VideoCodec Codec
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VideoWidth int
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VideoHeight int
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Duration time.Duration
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Frames int
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FPS float64
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Tracks int
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Encrypted bool
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FastStart bool
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Compatible bool
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}
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// NewInfo returns a new Info struct with default values.
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func NewInfo() Info {
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return Info{
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FileType: fs.TypeUnknown,
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FileSize: -1,
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MediaType: media.Unknown,
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ThumbOffset: -1,
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VideoOffset: -1,
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VideoType: Unknown,
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VideoCodec: CodecUnknown,
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FPS: 0.0,
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}
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}
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// VideoSize returns the size of the embedded video, if possible.
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func (info Info) VideoSize() int64 {
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if info.FileSize < 0 || info.VideoOffset < 0 {
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return 0
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}
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return info.FileSize - info.VideoOffset
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}
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// VideoBitrate returns the bitrate of the embedded video in MBit/s.
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func (info Info) VideoBitrate() float64 {
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videoSize := info.VideoSize()
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// Return 0 if video size or duration are unknown.
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if videoSize <= 0 || info.Duration <= 0 {
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return 0
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}
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// Divide number of bits through the duration in seconds.
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return ((float64(videoSize) * 8) / info.Duration.Seconds()) / 1e6
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}
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// VideoContentType composes the video content type from its mime type and codec.
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func (info Info) VideoContentType() string {
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if info.VideoMimeType == "" {
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return ContentTypeDefault
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}
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return ContentType(info.VideoMimeType, info.VideoCodec)
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}
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// VideoFileExt returns the appropriate video file extension based on the mime type and defaults to fs.ExtMP4 otherwise.
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func (info Info) VideoFileExt() string {
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switch info.VideoMimeType {
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case fs.MimeTypeMOV:
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return fs.ExtMOV
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default:
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return fs.ExtMP4
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}
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}
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// VideoFileType returns the video type based on the mime type and defaults to fs.VideoMP4 otherwise.
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func (info Info) VideoFileType() fs.Type {
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switch info.VideoMimeType {
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case fs.MimeTypeMOV:
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return fs.VideoMOV
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default:
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return fs.VideoMP4
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}
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}
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