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This commit is contained in:
Luke Pulverenti 2015-03-16 00:39:55 -04:00
parent caa223e1db
commit dcf8e4c4b5
2 changed files with 38 additions and 18 deletions
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52
MediaBrowser.Api/Playback/Dash/MpegDashService.cs
View file

@ -159,11 +159,10 @@ namespace MediaBrowser.Api.Playback.Dash
if (currentTranscodingIndex.HasValue) if (currentTranscodingIndex.HasValue)
{ {
DeleteLastFile(playlistPath, segmentExtension, 0); DeleteLastFile(playlistPath, segmentExtension, 0, 0);
} }
var startSeconds = index * state.SegmentLength; request.StartTimeTicks = GetPositionTicks(state, index);
request.StartTimeTicks = TimeSpan.FromSeconds(startSeconds).Ticks;
job = await StartFfMpeg(state, playlistPath, cancellationTokenSource, Path.GetDirectoryName(playlistPath)).ConfigureAwait(false); job = await StartFfMpeg(state, playlistPath, cancellationTokenSource, Path.GetDirectoryName(playlistPath)).ConfigureAwait(false);
} }
@ -193,6 +192,12 @@ namespace MediaBrowser.Api.Playback.Dash
return await GetSegmentResult(playlistPath, segmentPath, index, segmentLength, job, cancellationToken).ConfigureAwait(false); return await GetSegmentResult(playlistPath, segmentPath, index, segmentLength, job, cancellationToken).ConfigureAwait(false);
} }
private long GetPositionTicks(StreamState state, int segmentIndex)
{
var startSeconds = segmentIndex * state.SegmentLength;
return TimeSpan.FromSeconds(startSeconds).Ticks;
}
protected override async Task WaitForMinimumSegmentCount(string playlist, int segmentCount, CancellationToken cancellationToken) protected override async Task WaitForMinimumSegmentCount(string playlist, int segmentCount, CancellationToken cancellationToken)
{ {
var tmpPath = playlist + ".tmp"; var tmpPath = playlist + ".tmp";
@ -329,41 +334,49 @@ namespace MediaBrowser.Api.Playback.Dash
public int? GetCurrentTranscodingIndex(string playlist, string segmentExtension) public int? GetCurrentTranscodingIndex(string playlist, string segmentExtension)
{ {
var file = GetLastTranscodingFile(playlist, segmentExtension, FileSystem); var file = GetLastTranscodingFiles(playlist, segmentExtension, FileSystem, 1).FirstOrDefault();
if (file == null) if (file == null)
{ {
return null; return null;
} }
var playlistFilename = Path.GetFileNameWithoutExtension(playlist); var indexString = Path.GetFileNameWithoutExtension(file.Name).Split('-').LastOrDefault();
var indexString = Path.GetFileNameWithoutExtension(file.Name).Substring(playlistFilename.Length);
return int.Parse(indexString, NumberStyles.Integer, UsCulture); return int.Parse(indexString, NumberStyles.Integer, UsCulture);
} }
private void DeleteLastFile(string path, string segmentExtension, int retryCount) private void DeleteLastFile(string path, string segmentExtension, int retryCount, int numDeleted)
{ {
const int numToDelete = 2;
if (retryCount >= 5) if (retryCount >= 5)
{ {
return; return;
} }
var file = GetLastTranscodingFile(path, segmentExtension, FileSystem); var filesToGet = numToDelete - numDeleted;
if (file != null) if (filesToGet < 1)
{
return;
}
var files = GetLastTranscodingFiles(path, segmentExtension, FileSystem, filesToGet);
foreach (var file in files)
{ {
try try
{ {
FileSystem.DeleteFile(file.FullName); FileSystem.DeleteFile(file.FullName);
numDeleted++;
} }
catch (IOException ex) catch (IOException ex)
{ {
Logger.ErrorException("Error deleting partial stream file(s) {0}", ex, file.FullName); Logger.ErrorException("Error deleting partial stream file(s) {0}", ex, file.FullName);
Thread.Sleep(100); Thread.Sleep(100);
DeleteLastFile(path, segmentExtension, retryCount + 1); DeleteLastFile(path, segmentExtension, retryCount + 1, numDeleted);
} }
catch (Exception ex) catch (Exception ex)
{ {
@ -372,7 +385,7 @@ namespace MediaBrowser.Api.Playback.Dash
} }
} }
private static FileInfo GetLastTranscodingFile(string playlist, string segmentExtension, IFileSystem fileSystem) private static List<FileInfo> GetLastTranscodingFiles(string playlist, string segmentExtension, IFileSystem fileSystem, int count)
{ {
var folder = Path.GetDirectoryName(playlist); var folder = Path.GetDirectoryName(playlist);
@ -382,11 +395,12 @@ namespace MediaBrowser.Api.Playback.Dash
.EnumerateFiles("*", SearchOption.TopDirectoryOnly) .EnumerateFiles("*", SearchOption.TopDirectoryOnly)
.Where(i => string.Equals(i.Extension, segmentExtension, StringComparison.OrdinalIgnoreCase)) .Where(i => string.Equals(i.Extension, segmentExtension, StringComparison.OrdinalIgnoreCase))
.OrderByDescending(fileSystem.GetLastWriteTimeUtc) .OrderByDescending(fileSystem.GetLastWriteTimeUtc)
.FirstOrDefault(); .Take(count)
.ToList();
} }
catch (DirectoryNotFoundException) catch (DirectoryNotFoundException)
{ {
return null; return new List<FileInfo>();
} }
} }
@ -395,7 +409,7 @@ namespace MediaBrowser.Api.Playback.Dash
var folder = Path.GetDirectoryName(playlist); var folder = Path.GetDirectoryName(playlist);
var number = index.ToString("00000", CultureInfo.InvariantCulture); var number = index.ToString("00000", CultureInfo.InvariantCulture);
var filename = "chunk-stream" + representationId + "-" + number + segmentExtension; var filename = "stream" + representationId + "-" + number + segmentExtension;
return Path.Combine(folder, filename); return Path.Combine(folder, filename);
} }
@ -479,14 +493,20 @@ namespace MediaBrowser.Api.Playback.Dash
var threads = GetNumberOfThreads(state, false); var threads = GetNumberOfThreads(state, false);
var inputModifier = GetInputModifier(state); var inputModifier = GetInputModifier(state);
var startNumber = GetStartNumber(state);
var args = string.Format("{0} {1} -map_metadata -1 -threads {2} {3} {4} -copyts {5} -f dash -init_seg_name \"chunk-stream$RepresentationID$-00000.m4s\" -use_template 0 -min_seg_duration {6} -y \"{7}\"", var initSegmentName = "stream$RepresentationID$-00000.m4s";
var segmentName = "stream$RepresentationID$-$Number%05d$.m4s";
var args = string.Format("{0} {1} -map_metadata -1 -threads {2} {3} {4} -copyts {5} -f dash -init_seg_name \"{6}\" -media_seg_name \"{7}\" -use_template 0 -use_timeline 1 -min_seg_duration {8} -y \"{9}\"",
inputModifier, inputModifier,
GetInputArgument(transcodingJobId, state), GetInputArgument(transcodingJobId, state),
threads, threads,
GetMapArgs(state), GetMapArgs(state),
GetVideoArguments(state), GetVideoArguments(state),
GetAudioArguments(state), GetAudioArguments(state),
initSegmentName,
segmentName,
(state.SegmentLength * 1000000).ToString(CultureInfo.InvariantCulture), (state.SegmentLength * 1000000).ToString(CultureInfo.InvariantCulture),
outputPath outputPath
).Trim(); ).Trim();

4
MediaBrowser.Model/Dlna/StreamBuilder.cs
View file

@ -28,7 +28,7 @@ namespace MediaBrowser.Model.Dlna
List<MediaSourceInfo> mediaSources = new List<MediaSourceInfo>(); List<MediaSourceInfo> mediaSources = new List<MediaSourceInfo>();
foreach (MediaSourceInfo i in options.MediaSources) foreach (MediaSourceInfo i in options.MediaSources)
{ {
if (!string.IsNullOrEmpty(options.MediaSourceId) || if (string.IsNullOrEmpty(options.MediaSourceId) ||
StringHelper.EqualsIgnoreCase(i.Id, options.MediaSourceId)) StringHelper.EqualsIgnoreCase(i.Id, options.MediaSourceId))
{ {
mediaSources.Add(i); mediaSources.Add(i);
@ -61,7 +61,7 @@ namespace MediaBrowser.Model.Dlna
List<MediaSourceInfo> mediaSources = new List<MediaSourceInfo>(); List<MediaSourceInfo> mediaSources = new List<MediaSourceInfo>();
foreach (MediaSourceInfo i in options.MediaSources) foreach (MediaSourceInfo i in options.MediaSources)
{ {
if (!string.IsNullOrEmpty(options.MediaSourceId) || if (string.IsNullOrEmpty(options.MediaSourceId) ||
StringHelper.EqualsIgnoreCase(i.Id, options.MediaSourceId)) StringHelper.EqualsIgnoreCase(i.Id, options.MediaSourceId))
{ {
mediaSources.Add(i); mediaSources.Add(i);