mirror of
https://github.com/zoriya/Kyoo.git
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65 lines
1.5 KiB
Go
65 lines
1.5 KiB
Go
package src
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import (
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"fmt"
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"log"
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)
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type AudioStream struct {
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Stream
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index int32
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}
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func NewAudioStream(file *FileStream, idx int32) *AudioStream {
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log.Printf("Creating a audio stream %d for %s", idx, file.Path)
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ret := new(AudioStream)
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ret.index = idx
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NewStream(file, ret, &ret.Stream)
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return ret
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}
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func (as *AudioStream) getIdentifier() string {
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return fmt.Sprintf("a%d", as.index)
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}
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func (as *AudioStream) getFlags() Flags {
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return AudioF
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}
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func (as *AudioStream) getTranscodeArgs(segments string) []string {
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return []string{
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"-map", fmt.Sprintf("0:a:%d", as.index),
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"-c:a", "aac",
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// TODO: Support 5.1 audio streams.
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"-ac", "2",
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// TODO: Support multi audio qualities.
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"-b:a", "128k",
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}
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}
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func (ts *AudioStream) GetIndex() (string, error) {
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index := `#EXTM3U
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#EXT-X-VERSION:7
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#EXT-X-PLAYLIST-TYPE:EVENT
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#EXT-X-START:TIME-OFFSET=0
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#EXT-X-MEDIA-SEQUENCE:0
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#EXT-X-INDEPENDENT-SEGMENTS
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#EXT-X-MAP:URI="init.mp4"
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`
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index += fmt.Sprintf("#EXT-X-TARGETDURATION:%d\n", int(OptimalFragmentDuration)+1)
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count := int32((float64(ts.file.Info.Duration) / OptimalFragmentDuration))
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for segment := int32(0); segment < count; segment++ {
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index += fmt.Sprintf("#EXTINF:%.6f\n", OptimalFragmentDuration)
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index += fmt.Sprintf("segment-%d.m4s\n", segment)
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}
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last_ts := float64(count) * OptimalFragmentDuration
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if last_ts > 0 {
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index += fmt.Sprintf("#EXTINF:%.6f\n", float64(ts.file.Info.Duration)-last_ts)
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index += fmt.Sprintf("segment-%d.m4s\n", count)
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}
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index += `#EXT-X-ENDLIST`
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return index, nil
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}
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