public static Stream ExtractImage(MediaSource source, long position, int? maxWidth, int? maxHeight, string borders, string format)
{
if (!source.Exists)
{
Log.Warn("ExtractImage: Source {0} (resolved to path {1}) doesn't exists", source.GetDebugName(), source.GetPath());
WCFUtil.SetResponseCode(System.Net.HttpStatusCode.NotFound);
return Stream.Null;
}
if (!source.SupportsDirectAccess)
{
Log.Warn("ExtractImage: Extracting images from remote sources isn't supported yet", source.MediaType, source.Id);
WCFUtil.SetResponseCode(System.Net.HttpStatusCode.NotImplemented);
return Stream.Null;
}
// get temporary filename
string filename = String.Format("extract_{0}_{1}.jpg", source.GetUniqueIdentifier(), position);
string tempFile = cache.GetPath(filename);
// maybe it exists in cache, return that then
if (cache.Contains(filename))
{
return StreamPostprocessedImage(new ImageMediaSource(tempFile), maxWidth, maxHeight, borders, format);
}
// execute it
ProcessStartInfo info = new ProcessStartInfo();
using (var impersonator = source.GetImpersonator())
{
info.Arguments = String.Format("-ss {0} -i \"{1}\" -vframes 1 -f image2 {2}", position, source.GetPath(), tempFile);
info.FileName = Configuration.StreamingProfiles.FFMpegPath;
info.CreateNoWindow = true;
info.UseShellExecute = false;
Process proc = new Process();
proc.StartInfo = info;
proc.Start();
proc.WaitForExit();
}
// log when failed
if (!File.Exists(tempFile))
{
Log.Warn("Failed to extract image to temporary file {0} with command {1}", tempFile, info.Arguments);
WCFUtil.SetResponseCode(System.Net.HttpStatusCode.InternalServerError);
return Stream.Null;
}
return StreamPostprocessedImage(new ImageMediaSource(tempFile), maxWidth, maxHeight, borders, format);
}
public static WebMediaInfo GetMediaInfo(MediaSource source)
{
if (source.MediaType == WebStreamMediaType.TV)
{
// cache tv files for 10 seconds
if (TvCache.ContainsKey(source.Id) && TvCache[source.Id].Item1.AddSeconds(10).CompareTo(DateTime.Now) > 0)
{
// cache is valid, use it
return TvCache[source.Id].Item2;
}
// get media info and save it to the cache
TsBuffer buf = new TsBuffer(source.Id);
WebMediaInfo info = GetMediaInfo(buf.GetCurrentFilePath(), true);
TvCache[source.Id] = new Tuple<DateTime, WebMediaInfo>(DateTime.Now, info);
return info;
}
else if (!source.Exists)
{
throw new FileNotFoundException();
}
else if (source.SupportsDirectAccess)
{
using (var impersonator = source.GetImpersonator())
{
return GetMediaInfo(source.GetPath(), false);
}
}
else
{
// not (yet?) supported
throw new NotSupportedException();
}
}
public static Stream ExtractImage(MediaSource source, int startPosition, int? maxWidth, int? maxHeight)
{
if (!source.IsLocalFile)
{
Log.Warn("ExtractImage: Source type={0} id={1} is not supported yet", source.MediaType, source.Id);
WCFUtil.SetResponseCode(System.Net.HttpStatusCode.NotImplemented);
return null;
}
// calculate size
string ffmpegResize = "";
if (maxWidth != null && maxHeight != null)
{
try
{
decimal resolution = MediaInfoWrapper.GetMediaInfo(source).VideoStreams.First().DisplayAspectRatio;
ffmpegResize = "-s " + Resolution.Calculate(resolution, new Resolution(maxWidth.Value, maxHeight.Value)).ToString();
}
catch (Exception ex)
{
Log.Error("Error while getting resolution of video stream", ex);
}
}
// get temporary filename
string tempDir = Path.Combine(Path.GetTempPath(), "MPExtended", "imagecache");
if (!Directory.Exists(tempDir))
{
Directory.CreateDirectory(tempDir);
}
string filename = String.Format("ex_{0}_{1}_{2}_{3}.jpg", source.GetUniqueIdentifier(), startPosition,
maxWidth == null ? "null" : maxWidth.ToString(), maxHeight == null ? "null" : maxHeight.ToString());
string tempFile = Path.Combine(tempDir, filename);
// maybe it exists
if (File.Exists(tempFile))
{
return StreamImage(new ImageSource(tempFile));
}
// execute it
ProcessStartInfo info = new ProcessStartInfo();
info.Arguments = String.Format("-ss {0} -vframes 1 -i \"{1}\" {2} -f image2 {3}", startPosition, source.GetPath(), ffmpegResize, tempFile);
info.FileName = Configuration.Streaming.FFMpegPath;
info.CreateNoWindow = true;
info.UseShellExecute = false;
Process proc = new Process();
proc.StartInfo = info;
proc.Start();
proc.WaitForExit();
// log when failed
if (!File.Exists(tempFile))
{
Log.Warn("Failed to extract image to temporary file {0}", tempFile);
WCFUtil.SetResponseCode(System.Net.HttpStatusCode.InternalServerError);
return null;
}
return StreamImage(new ImageSource(tempFile));
}
public static WebMediaInfo GetMediaInfo(MediaSource source)
{
// Timeshiftings are a special case, as they can't be cached and need an additional path resolving step
if (source.MediaType == WebMediaType.TV)
{
if (tvCache.ContainsKey(source.Id) && DateTime.Now - tvCache[source.Id].Item1 > TimeSpan.FromSeconds(60))
return tvCache[source.Id].Item2;
TsBuffer tsBuffer = new TsBuffer(source.Id);
Log.Debug("Using path {0} from TS buffer {1} as source for {2}", tsBuffer.GetCurrentFilePath(), source.Id, source.GetDebugName());
WebMediaInfo info = LoadMediaInfo(tsBuffer.GetCurrentFilePath());
tvCache[source.Id] = new Tuple<DateTime, WebMediaInfo>(DateTime.Now, info);
return info;
}
using (var context = source.CreateNetworkContext())
{
// verify the file actually exists and is accessible over the local file system
if (!source.Exists)
{
Log.Warn("Trying to load MediaInfo for {0}, which does not exist or is inaccessible", source.GetDebugName());
return null;
}
else if (!source.SupportsDirectAccess)
{
Log.Warn("Loading MediaInfo for non-direct access source {0} isn't supported yet", source.GetDebugName());
return null;
}
// if we got the file in the cache, return it if we have it and the file hasn't been changed
var fileInfo = source.GetFileInfo();
if (source.MediaType != WebMediaType.TV && persistentCache.HasForSource(source))
{
var cachedItem = persistentCache.GetForSource(source);
if (cachedItem.Size == fileInfo.Size && cachedItem.CachedDate >= fileInfo.LastModifiedTime)
return cachedItem.Info;
}
var info = LoadMediaInfo(context.RewritePath(source.GetPath()));
if (info != null)
persistentCache.Save(source, new CachedInfoWrapper(info, fileInfo));
return info;
}
}
public static Stream ExtractImage(MediaSource source, long position, int?maxWidth, int?maxHeight, string borders, string format)
{
if (!source.Exists)
{
Log.Warn("ExtractImage: Source {0} (resolved to path {1}) doesn't exists", source.GetDebugName(), source.GetPath());
WCFUtil.SetResponseCode(System.Net.HttpStatusCode.NotFound);
return(Stream.Null);
}
if (!source.SupportsDirectAccess)
{
Log.Warn("ExtractImage: Extracting images from remote sources isn't supported yet", source.MediaType, source.Id);
WCFUtil.SetResponseCode(System.Net.HttpStatusCode.NotImplemented);
return(Stream.Null);
}
// get temporary filename
string filename = String.Format("extract_{0}_{1}.jpg", source.GetUniqueIdentifier(), position);
string tempFile = cache.GetPath(filename);
// maybe it exists in cache, return that then
if (cache.Contains(filename))
{
// if source is newer, cached image needs to be recreated
if (source.GetFileInfo().LastModifiedTime > cache.GetLastModifiedTime(tempFile))
{
cache.Invalidate(filename);
}
else
{
return(StreamPostprocessedImage(new ImageMediaSource(tempFile), maxWidth, maxHeight, borders, format));
}
}
// We need to impersonate to access the network drive and check if the thumbnail already exists. However, because
// impersonation is lost when starting a process, we can't start ffmpeg from in here. We need to check whether the
// file is accessible from outside the impersonation context again, and start the ffmpeg process as a different user
// if that is the case.
string fullPath;
using (var context = source.CreateNetworkContext())
{
fullPath = context.RewritePath(source.GetPath());
// stream a pre-existing thumbnail, if possible
if (source.MediaType == WebMediaType.Recording && Path.GetExtension(fullPath).ToLower() == ".ts")
{
var thumbnailFileInfo = new FileInfo(Path.ChangeExtension(fullPath, ".jpg"));
if (thumbnailFileInfo.Exists && thumbnailFileInfo.Length > 0)
{
return(StreamPostprocessedImage(new ImageMediaSource(thumbnailFileInfo.FullName), maxWidth, maxHeight, borders, format));
}
}
}
// finally, extract the image with ffmpeg if everything else has failed
bool extractResult = ExecuteFFMpegExtraction(source, fullPath, position, tempFile);
if (!extractResult)
{
WCFUtil.SetResponseCode(System.Net.HttpStatusCode.InternalServerError);
return(Stream.Null);
}
return(StreamPostprocessedImage(new ImageMediaSource(tempFile), maxWidth, maxHeight, borders, format));
}
public static Stream ExtractImage(MediaSource source, long startPosition, int?maxWidth, int?maxHeight)
{
if (!source.Exists)
{
Log.Warn("ExtractImage: Source {0} (resolved to path {1}) doesn't exists", source.GetDebugName(), source.GetPath());
WCFUtil.SetResponseCode(System.Net.HttpStatusCode.NotFound);
return(Stream.Null);
}
if (!source.SupportsDirectAccess)
{
Log.Warn("ExtractImage: Extracting images from remote sources isn't supported yet", source.MediaType, source.Id);
WCFUtil.SetResponseCode(System.Net.HttpStatusCode.NotImplemented);
return(Stream.Null);
}
// calculate size
string ffmpegResize = "";
if (maxWidth != null || maxHeight != null)
{
try
{
decimal resolution = MediaInfoWrapper.GetMediaInfo(source).VideoStreams.First().DisplayAspectRatio;
ffmpegResize = "-s " + Resolution.Calculate(resolution, maxWidth, maxHeight).ToString();
}
catch (Exception ex)
{
Log.Error("Error while getting resolution of video stream, not resizing", ex);
}
}
// get temporary filename
string filename = String.Format("extract_{0}_{1}_{2}_{3}.jpg", source.GetUniqueIdentifier(), startPosition,
maxWidth == null ? "null" : maxWidth.ToString(), maxHeight == null ? "null" : maxHeight.ToString());
string tempFile = cache.GetPath(filename);
// maybe it exists in cache, return that then
if (cache.Contains(filename))
{
return(StreamImage(new ImageMediaSource(tempFile)));
}
// execute it
ProcessStartInfo info = new ProcessStartInfo();
using (var impersonator = source.GetImpersonator())
{
info.Arguments = String.Format("-ss {0} -i \"{1}\" {2} -vframes 1 -f image2 {3}", startPosition, source.GetPath(), ffmpegResize, tempFile);
info.FileName = Configuration.Streaming.FFMpegPath;
info.CreateNoWindow = true;
info.UseShellExecute = false;
Process proc = new Process();
proc.StartInfo = info;
proc.Start();
proc.WaitForExit();
}
// log when failed
if (!File.Exists(tempFile))
{
Log.Warn("Failed to extract image to temporary file {0} with command {1}", tempFile, info.Arguments);
WCFUtil.SetResponseCode(System.Net.HttpStatusCode.InternalServerError);
return(Stream.Null);
}
return(StreamImage(new ImageMediaSource(tempFile)));
}
public static Stream ExtractImage(MediaSource source, int startPosition, int? maxWidth, int? maxHeight)
{
if (!source.Exists)
{
Log.Warn("ExtractImage: Source {0} (resolved to path {1}) doesn't exists", source.GetDebugName(), source.GetPath());
WCFUtil.SetResponseCode(System.Net.HttpStatusCode.NotFound);
return Stream.Null;
}
if (!source.SupportsDirectAccess)
{
Log.Warn("ExtractImage: Extracting images from remote sources isn't supported yet", source.MediaType, source.Id);
WCFUtil.SetResponseCode(System.Net.HttpStatusCode.NotImplemented);
return Stream.Null;
}
// calculate size
string ffmpegResize = "";
if (maxWidth != null || maxHeight != null)
{
try
{
decimal resolution = MediaInfoWrapper.GetMediaInfo(source).VideoStreams.First().DisplayAspectRatio;
ffmpegResize = "-s " + Resolution.Calculate(resolution, maxWidth, maxHeight).ToString();
}
catch (Exception ex)
{
Log.Error("Error while getting resolution of video stream, not resizing", ex);
}
}
// get temporary filename
string tempDir = Path.Combine(Installation.GetCacheDirectory(), "imagecache");
if (!Directory.Exists(tempDir))
{
Directory.CreateDirectory(tempDir);
}
string filename = String.Format("extract_{0}_{1}_{2}_{3}.jpg", source.GetUniqueIdentifier(), startPosition,
maxWidth == null ? "null" : maxWidth.ToString(), maxHeight == null ? "null" : maxHeight.ToString());
string tempFile = Path.Combine(tempDir, filename);
// maybe it exists in cache, return that then
if (File.Exists(tempFile))
{
return StreamImage(new ImageMediaSource(tempFile));
}
// execute it
ProcessStartInfo info = new ProcessStartInfo();
using (var impersonator = source.GetImpersonator())
{
info.Arguments = String.Format("-ss {0} -i \"{1}\" {2} -vframes 1 -f image2 {3}", startPosition, source.GetPath(), ffmpegResize, tempFile);
info.FileName = Configuration.Streaming.FFMpegPath;
info.CreateNoWindow = true;
info.UseShellExecute = false;
Process proc = new Process();
proc.StartInfo = info;
proc.Start();
proc.WaitForExit();
}
// log when failed
if (!File.Exists(tempFile))
{
Log.Warn("Failed to extract image to temporary file {0} with command {1}", tempFile, info.Arguments);
WCFUtil.SetResponseCode(System.Net.HttpStatusCode.InternalServerError);
return Stream.Null;
}
return StreamImage(new ImageMediaSource(tempFile));
}
public static WebMediaInfo GetMediaInfo(MediaSource source)
{
// we can't use our persistent cache for TV unfortunately, but we do cache them in memory for 60 seconds
if (source.MediaType == WebMediaType.TV)
{
if (tvCache.ContainsKey(source.Id) && DateTime.Now - tvCache[source.Id].Item1 > TimeSpan.FromSeconds(60))
{
return tvCache[source.Id].Item2;
}
// save it to our memory cache for a while
TsBuffer buf = new TsBuffer(source.Id);
string path = buf.GetCurrentFilePath();
Log.Debug("Using path {0} from TS buffer {1} as source for {2}", path, source.Id, source.GetDebugName());
WebMediaInfo info = DoLoadMediaInfo(buf.GetCurrentFilePath(), true);
tvCache[source.Id] = new Tuple<DateTime, WebMediaInfo>(DateTime.Now, info);
return info;
}
// load this item from persistent disk cache, if possible
if (persistentCache.HasForSource(source))
{
return persistentCache.GetForSource(source);
}
// some checks that only matter when we are actually going to load it from disk
if (!source.Exists)
{
Log.Warn("Trying to load mediainfo for {0}, which doesn't seem to exist", source.GetDebugName());
return null;
}
else if (!source.SupportsDirectAccess)
{
// not (yet?) supported
Log.Warn("Loading mediainfo for non-direct access source {0} isn't supported yet", source.GetDebugName());
return null;
}
// actually load it
WebMediaInfo outInfo;
using (NetworkShareImpersonator impersonator = new NetworkShareImpersonator(source.NeedsImpersonation))
{
outInfo = DoLoadMediaInfo(source.GetPath(), false);
}
if (outInfo != null)
{
persistentCache.Save(source, outInfo);
}
return outInfo;
}
public static Stream ExtractImage(MediaSource source, long position, int? maxWidth, int? maxHeight, string borders, string format)
{
if (!source.Exists)
{
Log.Warn("ExtractImage: Source {0} (resolved to path {1}) doesn't exists", source.GetDebugName(), source.GetPath());
WCFUtil.SetResponseCode(System.Net.HttpStatusCode.NotFound);
return Stream.Null;
}
if (!source.SupportsDirectAccess)
{
Log.Warn("ExtractImage: Extracting images from remote sources isn't supported yet", source.MediaType, source.Id);
WCFUtil.SetResponseCode(System.Net.HttpStatusCode.NotImplemented);
return Stream.Null;
}
// get temporary filename
string filename = String.Format("extract_{0}_{1}.jpg", source.GetUniqueIdentifier(), position);
string tempFile = cache.GetPath(filename);
// maybe it exists in cache, return that then
if (cache.Contains(filename))
{
// if source is newer, cached image needs to be recreated
if (source.GetFileInfo().LastModifiedTime > cache.GetLastModifiedTime(tempFile))
{
cache.Invalidate(filename);
}
else
{
return StreamPostprocessedImage(new ImageMediaSource(tempFile), maxWidth, maxHeight, borders, format);
}
}
// We need to impersonate to access the network drive and check if the thumbnail already exists. However, because
// impersonation is lost when starting a process, we can't start ffmpeg from in here. We need to check whether the
// file is accessible from outside the impersonation context again, and start the ffmpeg process as a different user
// if that is the case.
string fullPath;
using (var context = source.CreateNetworkContext())
{
fullPath = context.RewritePath(source.GetPath());
// stream a pre-existing thumbnail, if possible
if (source.MediaType == WebMediaType.Recording && Path.GetExtension(fullPath).ToLower() == ".ts")
{
var thumbnailFileInfo = new FileInfo(Path.ChangeExtension(fullPath, ".jpg"));
if (thumbnailFileInfo.Exists && thumbnailFileInfo.Length > 0)
return StreamPostprocessedImage(new ImageMediaSource(thumbnailFileInfo.FullName), maxWidth, maxHeight, borders, format);
}
}
// finally, extract the image with ffmpeg if everything else has failed
bool extractResult = ExecuteFFMpegExtraction(source, fullPath, position, tempFile);
if (!extractResult)
{
WCFUtil.SetResponseCode(System.Net.HttpStatusCode.InternalServerError);
return Stream.Null;
}
return StreamPostprocessedImage(new ImageMediaSource(tempFile), maxWidth, maxHeight, borders, format);
}
public WebItemSupportStatus GetItemSupportStatus(WebMediaType type, int? provider, string itemId)
{
// check if we actually now about this file
MediaSource source = new MediaSource(type, provider, itemId);
string path = source.GetPath();
if (path == null || path.Length == 0)
{
return new WebItemSupportStatus(false, "Cannot resolve item to a path");
}
// some checks based upon the file info. apparantly people have broken files in their connections
var fileinfo = source.GetFileInfo();
if (!fileinfo.Exists)
{
// add a special warning message for files that are on a network drive, as this often causes problems
Uri uri = new Uri(path);
if (uri.IsUnc && !NetworkInformation.IsLocalAddress(uri.Host))
{
return new WebItemSupportStatus(false, "File is on an inaccessible network share");
}
return new WebItemSupportStatus(false, "File does not exists or is inaccessible");
}
if (fileinfo.Size == 0)
{
return new WebItemSupportStatus(false, "This file has a size of 0KB");
}
// we don't support some things yet
if (path.EndsWith(".IFO"))
{
return new WebItemSupportStatus(false, "Streaming DVD files is not supported");
}
// while corrupt files may work, it's probably a better idea to warn early. check for a valid file using mediainfo
if (MediaInfo.MediaInfoWrapper.GetMediaInfo(source) == null)
{
return new WebItemSupportStatus(false, "This file might be corrupt");
}
return new WebItemSupportStatus() { Supported = true };
}
public static WebMediaInfo GetMediaInfo(MediaSource source)
{
// we can't cache it for TV, unfortunately
if (source.MediaType == WebStreamMediaType.TV)
{
// cache tv files for 60 seconds
if (tvCache.ContainsKey(source.Id) && DateTime.Now - tvCache[source.Id].Item1 > TimeSpan.FromSeconds(60))
{
// cache is valid, use it
return tvCache[source.Id].Item2;
}
// get media info and save it to the cache
TsBuffer buf = new TsBuffer(source.Id);
string path = buf.GetCurrentFilePath();
Log.Debug("Using path {0} from TS buffer {1} as source for {2}", path, source.Id, source.GetDebugName());
WebMediaInfo info = DoLoadMediaInfo(buf.GetCurrentFilePath(), true);
tvCache[source.Id] = new Tuple<DateTime, WebMediaInfo>(DateTime.Now, info);
return info;
}
// load this item from cache, if possible
if (persistentCache.HasForSource(source))
{
return persistentCache.GetForSource(source);
}
// some checks that only matter when we are actually going to load it from disk
if (!source.Exists)
{
Log.Warn("Trying to load mediainfo for {0}, which doesn't seem to exist", source.GetDebugName());
throw new FileNotFoundException();
}
else if (!source.SupportsDirectAccess)
{
// not (yet?) supported
Log.Warn("Loading mediainfo for non-direct access source {0} isn't supported yet", source.GetDebugName());
throw new NotSupportedException();
}
// actually load it
WebMediaInfo outInfo;
using (var impersonator = source.GetImpersonator())
{
outInfo = DoLoadMediaInfo(source.GetPath(), false);
}
persistentCache.Save(source, outInfo);
return outInfo;
}
public WebItemSupportStatus GetItemSupportStatus(WebStreamMediaType type, int? provider, string itemId)
{
MediaSource source = new MediaSource(type, provider, itemId);
string path = source.GetPath();
if (path == null || path.Length == 0)
{
return new WebItemSupportStatus(false, "Cannot resolve item to a path");
}
if (!source.Exists)
{
return new WebItemSupportStatus(false, "File does not exists or is inaccessible");
}
if (path.EndsWith(".IFO"))
{
return new WebItemSupportStatus(false, "Streaming DVD files is not supported");
}
return new WebItemSupportStatus() { Supported = true };
}