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Fix goplay

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This commit is contained in:
Joren 2024-09-06 14:27:09 +02:00
parent 078d0c774b
commit 4cbd64f263
Signed by: Joren
GPG Key ID: 280E33DFBC0F1B55
4 changed files with 144 additions and 3 deletions
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34
downloaders.go
View File

@ -5,9 +5,11 @@ import (
"encoding/json"
"fmt"
"io"
"net/http"
"os"
"os/exec"
"path/filepath"
"strings"
)
func processInputFile(inputFile string) error {
@ -45,7 +47,6 @@ func downloadFile(item Item) error {
mpdPath := item.MPD
if !isValidURL(item.MPD) {
decodedMPD, err := base64.StdEncoding.DecodeString(item.MPD)
if err != nil {
return fmt.Errorf("error decoding base64 MPD: %v", err)
@ -64,6 +65,37 @@ func downloadFile(item Item) error {
return fmt.Errorf("error closing temporary MPD file: %v", err)
}
mpdPath = tempFile.Name()
} else if strings.HasPrefix(item.MPD, "https://pubads.g.doubleclick.net") {
resp, err := http.Get(item.MPD)
if err != nil {
return fmt.Errorf("error downloading MPD: %v", err)
}
defer resp.Body.Close()
mpdContent, err := io.ReadAll(resp.Body)
if err != nil {
return fmt.Errorf("error reading MPD content: %v", err)
}
fixedMPDContent, err := fixGoPlay(string(mpdContent))
if err != nil {
return fmt.Errorf("error fixing MPD content: %v", err)
}
tempFile, err := os.CreateTemp("", "fixed_mpd_*.mpd")
if err != nil {
return fmt.Errorf("error creating temporary MPD file: %v", err)
}
defer os.Remove(tempFile.Name())
if _, err := tempFile.WriteString(fixedMPDContent); err != nil {
return fmt.Errorf("error writing to temporary MPD file: %v", err)
}
if err := tempFile.Close(); err != nil {
return fmt.Errorf("error closing temporary MPD file: %v", err)
}
mpdPath = tempFile.Name()
}

7
go.mod
View File

@ -2,11 +2,14 @@ module DRMDTool
go 1.23.0
require github.com/BurntSushi/toml v1.4.0
require (
github.com/BurntSushi/toml v1.4.0
github.com/asticode/go-astisub v0.26.2
github.com/beevik/etree v1.4.1
)
require (
github.com/asticode/go-astikit v0.20.0 // indirect
github.com/asticode/go-astisub v0.26.2 // indirect
github.com/asticode/go-astits v1.8.0 // indirect
golang.org/x/net v0.0.0-20200904194848-62affa334b73 // indirect
golang.org/x/text v0.3.2 // indirect

6
go.sum
View File

@ -6,10 +6,15 @@ github.com/asticode/go-astisub v0.26.2 h1:cdEXcm+SUSmYCEPTQYbbfCECnmQoIFfH6pF8wD
github.com/asticode/go-astisub v0.26.2/go.mod h1:WTkuSzFB+Bp7wezuSf2Oxulj5A8zu2zLRVFf6bIFQK8=
github.com/asticode/go-astits v1.8.0 h1:rf6aiiGn/QhlFjNON1n5plqF3Fs025XLUwiQ0NB6oZg=
github.com/asticode/go-astits v1.8.0/go.mod h1:DkOWmBNQpnr9mv24KfZjq4JawCFX1FCqjLVGvO0DygQ=
github.com/beevik/etree v1.4.1 h1:PmQJDDYahBGNKDcpdX8uPy1xRCwoCGVUiW669MEirVI=
github.com/beevik/etree v1.4.1/go.mod h1:gPNJNaBGVZ9AwsidazFZyygnd+0pAU38N4D+WemwKNs=
github.com/davecgh/go-spew v1.1.0 h1:ZDRjVQ15GmhC3fiQ8ni8+OwkZQO4DARzQgrnXU1Liz8=
github.com/davecgh/go-spew v1.1.0/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
github.com/pkg/profile v1.4.0/go.mod h1:NWz/XGvpEW1FyYQ7fCx4dqYBLlfTcE+A9FLAkNKqjFE=
github.com/pmezard/go-difflib v1.0.0 h1:4DBwDE0NGyQoBHbLQYPwSUPoCMWR5BEzIk/f1lZbAQM=
github.com/pmezard/go-difflib v1.0.0/go.mod h1:iKH77koFhYxTK1pcRnkKkqfTogsbg7gZNVY4sRDYZ/4=
github.com/stretchr/objx v0.1.0/go.mod h1:HFkY916IF+rwdDfMAkV7OtwuqBVzrE8GR6GFx+wExME=
github.com/stretchr/testify v1.4.0 h1:2E4SXV/wtOkTonXsotYi4li6zVWxYlZuYNCXe9XRJyk=
github.com/stretchr/testify v1.4.0/go.mod h1:j7eGeouHqKxXV5pUuKE4zz7dFj8WfuZ+81PSLYec5m4=
golang.org/x/crypto v0.0.0-20190308221718-c2843e01d9a2/go.mod h1:djNgcEr1/C05ACkg1iLfiJU5Ep61QUkGW8qpdssI0+w=
golang.org/x/crypto v0.0.0-20200622213623-75b288015ac9/go.mod h1:LzIPMQfyMNhhGPhUkYOs5KpL4U8rLKemX1yGLhDgUto=
@ -24,4 +29,5 @@ golang.org/x/text v0.3.2 h1:tW2bmiBqwgJj/UpqtC8EpXEZVYOwU0yG4iWbprSVAcs=
golang.org/x/text v0.3.2/go.mod h1:bEr9sfX3Q8Zfm5fL9x+3itogRgK3+ptLWKqgva+5dAk=
golang.org/x/tools v0.0.0-20180917221912-90fa682c2a6e/go.mod h1:n7NCudcB/nEzxVGmLbDWY5pfWTLqBcC2KZ6jyYvM4mQ=
gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
gopkg.in/yaml.v2 v2.2.2 h1:ZCJp+EgiOT7lHqUV2J862kp8Qj64Jo6az82+3Td9dZw=
gopkg.in/yaml.v2 v2.2.2/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI=

100
utils.go
View File

@ -1,9 +1,13 @@
package main
import (
"fmt"
"net/url"
"regexp"
"strconv"
"strings"
"github.com/beevik/etree"
)
func sanitizeFilename(filename string) string {
@ -18,3 +22,99 @@ func isValidURL(toTest string) bool {
_, err := url.ParseRequestURI(toTest)
return err == nil
}
func fixGoPlay(mpdContent string) (string, error) {
doc := etree.NewDocument()
if err := doc.ReadFromString(mpdContent); err != nil {
return "", fmt.Errorf("error parsing MPD content: %v", err)
}
root := doc.Root()
// Remove ad periods
for _, period := range root.SelectElements("Period") {
if strings.Contains(period.SelectAttrValue("id", ""), "-ad-") {
root.RemoveChild(period)
}
}
// Find highest bandwidth for video
highestBandwidth := 0
for _, adaptationSet := range root.FindElements("//AdaptationSet") {
if strings.Contains(adaptationSet.SelectAttrValue("mimeType", ""), "video") {
for _, representation := range adaptationSet.SelectElements("Representation") {
bandwidth, _ := strconv.Atoi(representation.SelectAttrValue("bandwidth", "0"))
if bandwidth > highestBandwidth {
highestBandwidth = bandwidth
}
}
}
}
// Remove lower bitrate representations
for _, adaptationSet := range root.FindElements("//AdaptationSet") {
if strings.Contains(adaptationSet.SelectAttrValue("mimeType", ""), "video") {
for _, representation := range adaptationSet.SelectElements("Representation") {
bandwidth, _ := strconv.Atoi(representation.SelectAttrValue("bandwidth", "0"))
if bandwidth != highestBandwidth {
adaptationSet.RemoveChild(representation)
}
}
}
}
// Combine periods
periods := root.SelectElements("Period")
if len(periods) > 1 {
firstPeriod := periods[0]
var newVideoTimeline, newAudioTimeline *etree.Element
// Find or create SegmentTimeline elements
for _, adaptationSet := range firstPeriod.SelectElements("AdaptationSet") {
mimeType := adaptationSet.SelectAttrValue("mimeType", "")
if strings.Contains(mimeType, "video") && newVideoTimeline == nil {
newVideoTimeline = findOrCreateSegmentTimeline(adaptationSet)
} else if strings.Contains(mimeType, "audio") && newAudioTimeline == nil {
newAudioTimeline = findOrCreateSegmentTimeline(adaptationSet)
}
}
for _, period := range periods[1:] {
for _, adaptationSet := range period.SelectElements("AdaptationSet") {
mimeType := adaptationSet.SelectAttrValue("mimeType", "")
var timeline *etree.Element
if strings.Contains(mimeType, "video") {
timeline = newVideoTimeline
} else if strings.Contains(mimeType, "audio") {
timeline = newAudioTimeline
}
if timeline != nil {
segmentTimeline := findOrCreateSegmentTimeline(adaptationSet)
for _, s := range segmentTimeline.SelectElements("S") {
timeline.AddChild(s.Copy())
}
}
}
root.RemoveChild(period)
}
}
return doc.WriteToString()
}
func findOrCreateSegmentTimeline(adaptationSet *etree.Element) *etree.Element {
for _, representation := range adaptationSet.SelectElements("Representation") {
for _, segmentTemplate := range representation.SelectElements("SegmentTemplate") {
timeline := segmentTemplate.SelectElement("SegmentTimeline")
if timeline != nil {
return timeline
}
}
}
// If no SegmentTimeline found, create one
representation := adaptationSet.CreateElement("Representation")
segmentTemplate := representation.CreateElement("SegmentTemplate")
return segmentTemplate.CreateElement("SegmentTimeline")
}