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122 lines
3.5 KiB
Go
122 lines
3.5 KiB
Go
2 years ago
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package ffmpeg
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import (
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"context"
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"encoding/json"
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"io"
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"os/exec"
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"strings"
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"github.com/samber/lo"
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)
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type Result struct {
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Format *Format `json:"format"`
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Streams []*Stream `json:"streams"`
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}
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func (r *Result) HasAttachedPic() bool {
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return lo.ContainsBy(r.Streams, func(s *Stream) bool {
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return s.CodecType == "video"
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})
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}
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func (r *Result) getTagByKey(key string) string {
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for k, v := range r.Format.Tags {
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if key == strings.ToLower(k) {
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return v
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}
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}
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return ""
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}
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func (r *Result) GetTitle() string {
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return r.getTagByKey("title")
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}
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func (r *Result) GetAlbum() string {
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return r.getTagByKey("album")
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}
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func (r *Result) GetArtists() []string {
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artists := strings.Split(r.getTagByKey("artist"), "/")
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for i := range artists {
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artists[i] = strings.TrimSpace(artists[i])
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}
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return artists
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}
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type Format struct {
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Filename string `json:"filename"`
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NbStreams int `json:"nb_streams"`
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NbPrograms int `json:"nb_programs"`
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FormatName string `json:"format_name"`
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FormatLongName string `json:"format_long_name"`
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StartTime string `json:"start_time"`
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Duration string `json:"duration"`
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BitRate string `json:"bit_rate"`
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ProbeScore int `json:"probe_score"`
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Tags map[string]string `json:"tags"`
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}
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type Stream struct {
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Index int `json:"index"`
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CodecName string `json:"codec_name"`
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CodecLongName string `json:"codec_long_name"`
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CodecType string `json:"codec_type"`
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CodecTagString string `json:"codec_tag_string"`
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CodecTag string `json:"codec_tag"`
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SampleFmt string `json:"sample_fmt"`
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SampleRate string `json:"sample_rate"`
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Channels int `json:"channels"`
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ChannelLayout string `json:"channel_layout"`
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BitsPerSample int `json:"bits_per_sample"`
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RFrameRate string `json:"r_frame_rate"`
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AvgFrameRate string `json:"avg_frame_rate"`
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TimeBase string `json:"time_base"`
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StartPts int `json:"start_pts"`
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StartTime string `json:"start_time"`
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BitRate string `json:"bit_rate"`
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Disposition *ProbeDisposition `json:"disposition"`
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}
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type ProbeDisposition struct {
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Default int `json:"default"`
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Dub int `json:"dub"`
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Original int `json:"original"`
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Comment int `json:"comment"`
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Lyrics int `json:"lyrics"`
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Karaoke int `json:"karaoke"`
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Forced int `json:"forced"`
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HearingImpaired int `json:"hearing_impaired"`
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VisualImpaired int `json:"visual_impaired"`
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CleanEffects int `json:"clean_effects"`
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AttachedPic int `json:"attached_pic"`
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TimedThumbnails int `json:"timed_thumbnails"`
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Captions int `json:"captions"`
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Descriptions int `json:"descriptions"`
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Metadata int `json:"metadata"`
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Dependent int `json:"dependent"`
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StillImage int `json:"still_image"`
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}
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func ProbeReader(ctx context.Context, rd io.Reader) (*Result, error) {
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cmd := exec.CommandContext(ctx, "ffprobe",
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"-v", "quiet", // disable logging
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"-print_format", "json", // use json format
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"-show_format", "-show_streams", // retrieve format and streams
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"-", // input from stdin
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)
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cmd.Stdin = rd
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out, err := cmd.Output()
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if err != nil {
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return nil, err
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}
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ret := new(Result)
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if err := json.Unmarshal(out, ret); err != nil {
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return nil, err
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}
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return ret, nil
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}
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