// Exactly one of manifestUri and manifestPath must be set.
public static void DownloadAndMux(Uri manifestUri, string manifestPath, string mkvPath, bool isDeterministic, TimeSpan stopAfter,
SetupStop setupStop, DisplayDuration displayDuration)
{
string manifestParentPath = null; // A null indicates a remote manifest file.
ManifestInfo manifestInfo;
if (manifestPath != null)
{
manifestParentPath = Path.GetDirectoryName(manifestPath);
Console.WriteLine("Parsing local manifest file: " + manifestPath);
using (FileStream manifestStream = new FileStream(manifestPath, FileMode.Open)) {
manifestInfo = ManifestInfo.ParseManifest(manifestStream, /*manifestUri:*/ new Uri(LOCAL_URL_PREFIX));
}
}
else
{
Console.WriteLine("Downloading and parsing manifest: " + manifestUri);
WebClient webClient = new WebClient();
using (Stream manifestStream = webClient.OpenRead(manifestUri)) {
manifestInfo = ManifestInfo.ParseManifest(manifestStream, manifestUri);
}
}
Console.Write(manifestInfo.GetDescription());
IList <Track> tracks = new List <Track>();
foreach (StreamInfo streamInfo in manifestInfo.SelectedStreams)
{
foreach (TrackInfo trackInfo in streamInfo.SelectedTracks)
{
tracks.Add(new Track(trackInfo));
}
}
IList <TrackEntry> trackEntries = new List <TrackEntry>();
IList <IList <MediaSample> > trackSamples = new List <IList <MediaSample> >();
for (int i = 0; i < tracks.Count; ++i)
{
trackEntries.Add(tracks[i].TrackInfo.TrackEntry);
trackEntries[i].TrackNumber = (ulong)(i + 1);
trackSamples.Add(new List <MediaSample>());
}
for (int i = 0; i < tracks.Count; i++)
{
// TODO: Add a facility to start live streams from a later chunk (it was chunkIndex=10 previously).
// Our design allows for an empty ChunkList, in case live streams are growing.
tracks[i].NextStartTime = tracks[i].TrackInfo.Stream.ChunkList.Count == 0 ? 0 :
tracks[i].TrackInfo.Stream.ChunkList[0].StartTime;
}
// TODO: Test for live streams (see the StackOverflow question).
Console.WriteLine("Also muxing selected tracks to MKV: " + mkvPath);
try {
if (Directory.GetParent(mkvPath) != null &&
!Directory.GetParent(mkvPath).Exists)
{
Directory.GetParent(mkvPath).Create();
}
} catch (IOException) {
// TODO: Add nicer error reporting, without a stack trace.
throw new Exception("Cannot not create the directory of .mkv: " + mkvPath);
}
ulong maxTrackEndTimeHint = manifestInfo.Duration;
for (int i = 0; i < tracks.Count; ++i)
{
IList <ChunkInfo> chunkInfos = tracks[i].TrackInfo.Stream.ChunkList;
int j = chunkInfos.Count - 1;
if (j >= 0) // Our design allows for an empty ChunkList.
{
ulong trackDuration = chunkInfos[j].StartTime + chunkInfos[j].Duration;
if (maxTrackEndTimeHint < trackDuration)
{
maxTrackEndTimeHint = trackDuration;
}
}
}
// The .muxstate file is approximately 1/5441.43 of the size of the .mkv.
// The .muxstate file is around 28.088 bytes per second. TODO: Update this after n.
// Sometimes totalDuration of video is 1156420602, audio is 1156818141 (larger), so we just take the maximum.
string muxStatePath = Path.ChangeExtension(mkvPath, "muxstate");
string muxStateOldPath = muxStatePath + ".old";
byte[] oldMuxState = null;
if (File.Exists(muxStatePath)) // False for directories.
{
using (FileStream fileStream = new FileStream(muxStatePath, FileMode.Open)) {
oldMuxState = ReadFileStream(fileStream);
}
if (oldMuxState.Length > 0)
{
// File.Move fails with IOException if the destination already exists.
// C# and .NET SUXX: There is no atomic overwrite-move.
try {
File.Move(muxStatePath, muxStateOldPath);
} catch (IOException) {
File.Replace(muxStatePath, muxStateOldPath, null, true);
}
}
}
DownloadingMediaDataSource source = new DownloadingMediaDataSource(
tracks, manifestParentPath, manifestInfo.TimeScale,
manifestInfo.IsLive, (ulong)stopAfter.Ticks, manifestInfo.TotalTicks, displayDuration);
setupStop(manifestInfo.IsLive, source);
MuxStateWriter muxStateWriter = new MuxStateWriter(new FileStream(muxStatePath, FileMode.Create));
try {
MkvUtils.WriteMkv(mkvPath, trackEntries, source, maxTrackEndTimeHint, manifestInfo.TimeScale, isDeterministic,
oldMuxState, muxStateWriter);
} finally {
muxStateWriter.Close();
}
File.Delete(muxStatePath);
if (File.Exists(muxStateOldPath))
{
File.Delete(muxStateOldPath);
}
}
// Exactly one of manifestUri and manifestPath must be set.
public static void DownloadAndMux(Uri manifestUri, string manifestPath, string mkvPath, bool isDeterministic, TimeSpan stopAfter,
SetupStop setupStop, DisplayDuration displayDuration)
{
string manifestParentPath = null; // A null indicates a remote manifest file.
ManifestInfo manifestInfo;
if (manifestPath != null) {
manifestParentPath = Path.GetDirectoryName(manifestPath);
Console.WriteLine("Parsing local manifest file: " + manifestPath);
using (FileStream manifestStream = new FileStream(manifestPath, FileMode.Open)) {
manifestInfo = ManifestInfo.ParseManifest(manifestStream, /*manifestUri:*/new Uri(LOCAL_URL_PREFIX));
}
} else {
Console.WriteLine("Downloading and parsing manifest: " + manifestUri);
WebClient webClient = new WebClient();
using (Stream manifestStream = webClient.OpenRead(manifestUri)) {
manifestInfo = ManifestInfo.ParseManifest(manifestStream, manifestUri);
}
}
Console.Write(manifestInfo.GetDescription());
IList<Track> tracks = new List<Track>();
foreach (StreamInfo streamInfo in manifestInfo.SelectedStreams) {
foreach (TrackInfo trackInfo in streamInfo.SelectedTracks) {
tracks.Add(new Track(trackInfo));
}
}
IList<TrackEntry> trackEntries = new List<TrackEntry>();
IList<IList<MediaSample>> trackSamples = new List<IList<MediaSample>>();
for (int i = 0; i < tracks.Count; ++i) {
trackEntries.Add(tracks[i].TrackInfo.TrackEntry);
trackEntries[i].TrackNumber = (ulong)(i + 1);
trackSamples.Add(new List<MediaSample>());
}
for (int i = 0; i < tracks.Count; i++) {
// TODO: Add a facility to start live streams from a later chunk (it was chunkIndex=10 previously).
// Our design allows for an empty ChunkList, in case live streams are growing.
tracks[i].NextStartTime = tracks[i].TrackInfo.Stream.ChunkList.Count == 0 ? 0 :
tracks[i].TrackInfo.Stream.ChunkList[0].StartTime;
}
// TODO: Test for live streams (see the StackOverflow question).
Console.WriteLine("Also muxing selected tracks to MKV: " + mkvPath);
try {
if (Directory.GetParent(mkvPath) != null &&
!Directory.GetParent(mkvPath).Exists)
Directory.GetParent(mkvPath).Create();
} catch (IOException) {
// TODO: Add nicer error reporting, without a stack trace.
throw new Exception("Cannot not create the directory of .mkv: " + mkvPath);
}
ulong maxTrackEndTimeHint = manifestInfo.Duration;
for (int i = 0; i < tracks.Count; ++i) {
IList<ChunkInfo> chunkInfos = tracks[i].TrackInfo.Stream.ChunkList;
int j = chunkInfos.Count - 1;
if (j >= 0) { // Our design allows for an empty ChunkList.
ulong trackDuration = chunkInfos[j].StartTime + chunkInfos[j].Duration;
if (maxTrackEndTimeHint < trackDuration) maxTrackEndTimeHint = trackDuration;
}
}
// The .muxstate file is approximately 1/5441.43 of the size of the .mkv.
// The .muxstate file is around 28.088 bytes per second. TODO: Update this after n.
// Sometimes totalDuration of video is 1156420602, audio is 1156818141 (larger), so we just take the maximum.
string muxStatePath = Path.ChangeExtension(mkvPath, "muxstate");
string muxStateOldPath = muxStatePath + ".old";
byte[] oldMuxState = null;
if (File.Exists(muxStatePath)) { // False for directories.
using (FileStream fileStream = new FileStream(muxStatePath, FileMode.Open)) {
oldMuxState = ReadFileStream(fileStream);
}
if (oldMuxState.Length > 0) {
// File.Move fails with IOException if the destination already exists.
// C# and .NET SUXX: There is no atomic overwrite-move.
try {
File.Move(muxStatePath, muxStateOldPath);
} catch (IOException) {
File.Replace(muxStatePath, muxStateOldPath, null, true);
}
}
}
DownloadingMediaDataSource source = new DownloadingMediaDataSource(
tracks, manifestParentPath, manifestInfo.TimeScale,
manifestInfo.IsLive, (ulong)stopAfter.Ticks, manifestInfo.TotalTicks, displayDuration);
setupStop(manifestInfo.IsLive, source);
MuxStateWriter muxStateWriter = new MuxStateWriter(new FileStream(muxStatePath, FileMode.Create));
try {
MkvUtils.WriteMkv(mkvPath, trackEntries, source, maxTrackEndTimeHint, manifestInfo.TimeScale, isDeterministic,
oldMuxState, muxStateWriter);
} finally {
muxStateWriter.Close();
}
File.Delete(muxStatePath);
if (File.Exists(muxStateOldPath)) {
File.Delete(muxStateOldPath);
}
}
