/// <summary>
/// GetChunkBuffer
/// Return the chunk buffer from the disk
/// </summary>
private async Task <byte[]> GetChunkBuffer(bool isVideo, string path, ulong time)
{
byte[] buffer = null;
string dir = Path.Combine(root, path);
if (!string.IsNullOrEmpty(dir))
{
string indexFile = Path.Combine(dir, (isVideo == true ? videoIndexFileName : audioIndexFileName));
string contentFile = Path.Combine(dir, (isVideo == true ? videoContentFileName : audioContentFileName));
if ((!string.IsNullOrEmpty(contentFile)) &&
(!string.IsNullOrEmpty(indexFile)))
{
using (var releaser = (isVideo == true ? await internalVideoDiskLock.ReaderLockAsync(): await internalAudioDiskLock.ReaderLockAsync()))
{
ulong offset = 0;
ulong size = 20;
ulong fileSize = await GetFileSize(indexFile);
while (offset < fileSize)
{
byte[] b = await Restore(indexFile, offset, size);
IndexCache ic = new IndexCache(b);
if (ic != null)
{
if (ic.Time == time)
{
buffer = await Restore(contentFile, ic.Offset, ic.Size);
break;
}
}
offset += size;
}
}
}
}
return(buffer);
}
/// <summary>
/// GetChunkBuffer
/// Return the chunk buffer from the disk
/// </summary>
private async Task<byte[]> GetChunkBuffer(bool isVideo, string path, ulong time)
{
byte[] buffer = null;
string dir = Path.Combine(root, path);
if (!string.IsNullOrEmpty(dir))
{
string indexFile = Path.Combine(dir, (isVideo == true ? videoIndexFileName : audioIndexFileName));
string contentFile = Path.Combine(dir, (isVideo == true ? videoContentFileName : audioContentFileName));
if ((!string.IsNullOrEmpty(contentFile))&&
(!string.IsNullOrEmpty(indexFile)))
{
using (var releaser = (isVideo == true ? await internalVideoDiskLock.ReaderLockAsync(): await internalAudioDiskLock.ReaderLockAsync()))
{
ulong offset = 0;
ulong size = 20;
ulong fileSize = await GetFileSize(indexFile);
while (offset < fileSize)
{
byte[] b = await Restore(indexFile, offset, size);
IndexCache ic = new IndexCache(b);
if (ic != null)
{
if (ic.Time == time)
{
buffer = await Restore(contentFile, ic.Offset, ic.Size);
break;
}
}
offset += size;
}
}
}
}
return buffer;
}
/// <summary>
/// SaveVideoChunks
/// Save video chunks on disk
/// </summary>
public async Task <bool> SaveVideoChunks(ManifestCache cache)
{
bool bResult = false;
string VideoIndexFile = Path.Combine(Path.Combine(root, cache.StoragePath), videoIndexFileName);
string VideoContentFile = Path.Combine(Path.Combine(root, cache.StoragePath), videoContentFileName);
if ((!string.IsNullOrEmpty(VideoIndexFile)) &&
(!string.IsNullOrEmpty(VideoContentFile)))
{
using (var releaser = await internalVideoDiskLock.WriterLockAsync())
{
ulong VideoOffset = await GetFileSize(VideoContentFile);
ulong InitialVideoOffset = VideoOffset;
// delete the initial files
/*
* await DeleteFile(VideoIndexFile);
* await DeleteFile(VideoContentFile);
* cache.VideoSavedChunks = 0;
*/
for (int Index = (int)cache.VideoSavedChunks; Index < (int)cache.VideoDownloadedChunks; Index++)
//foreach (var cc in cache.VideoChunkList)
{
var cc = cache.VideoChunkList[Index];
if ((cc != null) && (cc.GetLength() > 0))
{
IndexCache ic = new IndexCache(cc.Time, VideoOffset, cc.GetLength());
if (ic != null)
{
ulong res = await Append(VideoContentFile, cc.chunkBuffer);
if (res == cc.GetLength())
{
VideoOffset += res;
ulong result = await Append(VideoIndexFile, ic.GetByteData());
if (result == indexSize)
{
cache.VideoSavedChunks++;
cache.VideoSavedBytes += res;
// free buffer
cc.chunkBuffer = null;
// cache.VideoChunkList[Index].chunkBuffer = null;
}
}
}
}
else
{
break;
}
}
if (InitialVideoOffset < VideoOffset)
{
bResult = true;
}
if (cache.VideoSavedChunks == cache.VideoDownloadedChunks)
{
bResult = true;
}
}
}
return(bResult);
}
/// <summary>
/// SaveVideoChunks
/// Save video chunks on disk
/// </summary>
public async Task<bool> SaveVideoChunks(ManifestCache cache)
{
bool bResult = false;
string VideoIndexFile = Path.Combine(Path.Combine(root, cache.StoragePath), videoIndexFileName);
string VideoContentFile = Path.Combine(Path.Combine(root, cache.StoragePath), videoContentFileName);
if ((!string.IsNullOrEmpty(VideoIndexFile)) &&
(!string.IsNullOrEmpty(VideoContentFile)))
{
using (var releaser = await internalVideoDiskLock.WriterLockAsync())
{
ulong VideoOffset = await GetFileSize(VideoContentFile);
ulong InitialVideoOffset = VideoOffset;
// delete the initial files
/*
await DeleteFile(VideoIndexFile);
await DeleteFile(VideoContentFile);
cache.VideoSavedChunks = 0;
*/
for (int Index = (int)cache.VideoSavedChunks; Index < (int)cache.VideoDownloadedChunks; Index++)
//foreach (var cc in cache.VideoChunkList)
{
var cc = cache.VideoChunkList[Index];
if ((cc != null) && (cc.GetLength() > 0))
{
IndexCache ic = new IndexCache(cc.Time, VideoOffset, cc.GetLength());
if (ic != null)
{
ulong res = await Append(VideoContentFile, cc.chunkBuffer);
if (res == cc.GetLength())
{
VideoOffset += res;
ulong result = await Append(VideoIndexFile, ic.GetByteData());
if (result == indexSize)
{
cache.VideoSavedChunks++;
cache.VideoSavedBytes += res;
// free buffer
cc.chunkBuffer = null;
// cache.VideoChunkList[Index].chunkBuffer = null;
}
}
}
}
else
break;
}
if (InitialVideoOffset < VideoOffset)
bResult = true;
if (cache.VideoSavedChunks == cache.VideoDownloadedChunks)
bResult = true;
}
}
return bResult;
}
