joy4/mp4/atom/utils.go
nareix 92528599ba Add 'mp4/' from commit 'bd71ca9823ec91410ccdf4d2ed783ba44b8a14d7'
git-subtree-dir: mp4
git-subtree-mainline: 8bb2ec1a5cdf4acae1ca4dfa09dd876b850bea24
git-subtree-split: bd71ca9823ec91410ccdf4d2ed783ba44b8a14d7
2016-07-01 21:31:47 +08:00

30 lines
636 B
Go

package atom
func GetAvc1ConfByTrack(stream *Track) (avc1 *Avc1Conf) {
if media := stream.Media; media != nil {
if info := media.Info; info != nil {
if sample := info.Sample; sample != nil {
if desc := sample.SampleDesc; desc != nil {
if avc1 := desc.Avc1Desc; avc1 != nil {
return avc1.Conf
}
}
}
}
}
return
}
func GetMp4aDescByTrack(stream *Track) (mp4a *Mp4aDesc) {
if media := stream.Media; media != nil {
if info := media.Info; info != nil {
if sample := info.Sample; sample != nil {
if desc := sample.SampleDesc; desc != nil {
return desc.Mp4aDesc
}
}
}
}
return
}