/// <summary>
/// PutSample
/// This is only used when caching is enabled.
/// Slices are placed in the destination track in the order they are put.
/// FIXME: In case the writes are non-sequential, gaps must be filled with zero size but non-zero duration slices.
/// </summary>
/// <param name="sample"></param>
public virtual void PutSample(Slice sample)
{
//CacheMgr.SlicesForWriting.Add(sample); // FIXME: we don't need SlicesForWriting anymore because a Slice is now a StreamDataBlockInfo
Slice outSlice = new Slice();
outSlice.Copy(sample as StreamDataBlockInfo);
outSlice.SliceBytes = new byte[sample.SliceBytes.Length];
sample.SliceBytes.CopyTo(outSlice.SliceBytes, 0);
SampleStreamLocations.Add(outSlice);
}
private static Slice GetKeyResult(FutureHandle h)
{
Contract.Requires(h != null);
var err = FdbNative.FutureGetKey(h, out ReadOnlySpan <byte> result);
#if DEBUG_TRANSACTIONS
Debug.WriteLine("FdbTransaction[].GetKeyResult() => err=" + err + ", result=" + result.ToString());
#endif
Fdb.DieOnError(err);
return(Slice.Copy(result));
}
private static Slice GetValueResultBytes(FutureHandle h)
{
Contract.Requires(h != null);
var err = FdbNative.FutureGetValue(h, out bool present, out ReadOnlySpan <byte> result);
#if DEBUG_TRANSACTIONS
Debug.WriteLine("FdbTransaction[].TryGetValueResult() => err=" + err + ", present=" + present + ", valueLength=" + result.Count);
#endif
Fdb.DieOnError(err);
return(present ? Slice.Copy(result) : Slice.Nil);
}
public override Slice GetSample(StreamDataBlockInfo SampleInfo)
{
Slice ans = new Slice();
ans.SliceBytes = new byte[SampleInfo.SliceSize];
//ParentStream.EnterMutex();
ISMVTrackFormat ismvFormat = TrackFormat as ISMVTrackFormat;
ismvFormat.boxReader.BaseStream.Position = (long)SampleInfo.StreamOffset; // if this GetSample call follows another one, file should be in position
ismvFormat.boxReader.BaseStream.Read(ans.SliceBytes, 0, SampleInfo.SliceSize);
//ParentStream.LeaveMutex();
ans.Copy(SampleInfo);
return (ans);
}
public void Test_UUid64_WriteTo()
{
var original = Uuid64.Parse("01234567-89ABCDEF");
Assume.That(original.ToUInt64(), Is.EqualTo(0x0123456789ABCDEF));
// span with more space
var scratch = Slice.Repeat(0xAA, 16);
original.WriteTo(scratch);
Assert.That(scratch.ToString("X"), Is.EqualTo("01 23 45 67 89 AB CD EF AA AA AA AA AA AA AA AA"));
// span with no offset and exact size
scratch = Slice.Repeat(0xAA, 16);
original.WriteTo(scratch.Substring(0, 8));
Assert.That(scratch.ToString("X"), Is.EqualTo("01 23 45 67 89 AB CD EF AA AA AA AA AA AA AA AA"));
// span with offset
scratch = Slice.Repeat(0xAA, 16);
original.WriteTo(scratch.Substring(4));
Assert.That(scratch.ToString("X"), Is.EqualTo("AA AA AA AA 01 23 45 67 89 AB CD EF AA AA AA AA"));
// span with offset and exact size
scratch = Slice.Repeat(0xAA, 16);
original.WriteTo(scratch.Substring(4, 8));
Assert.That(scratch.ToString("X"), Is.EqualTo("AA AA AA AA 01 23 45 67 89 AB CD EF AA AA AA AA"));
scratch = Slice.Repeat(0xAA, 16);
original.WriteToUnsafe(scratch.Array, scratch.Offset);
Assert.That(scratch.ToString("X"), Is.EqualTo("01 23 45 67 89 AB CD EF AA AA AA AA AA AA AA AA"));
unsafe
{
byte *buf = stackalloc byte[16];
UnsafeHelpers.FillUnsafe(buf, 16, 0xAA);
original.WriteToUnsafe(buf + 2);
Assert.That(Slice.Copy(buf, 16).ToString("X"), Is.EqualTo("AA AA 01 23 45 67 89 AB CD EF AA AA AA AA AA AA"));
}
// errors
Assert.That(() => original.WriteTo(Slice.Empty), Throws.InstanceOf <ArgumentException>(), "Target buffer is empty");
Assert.That(() => original.WriteTo(null, 8), Throws.InstanceOf <ArgumentException>(), "Target buffer is null");
Assert.That(() => original.WriteTo(null, 0), Throws.InstanceOf <ArgumentException>(), "Target buffer is null");
scratch = Slice.Repeat(0xAA, 16);
Assert.That(() => original.WriteTo(scratch.Substring(0, 7)), Throws.InstanceOf <ArgumentException>(), "Target buffer is too small");
Assert.That(scratch.ToString("X"), Is.EqualTo("AA AA AA AA AA AA AA AA AA AA AA AA AA AA AA AA"), "Buffer should not have been overwritten!");
}
public virtual Slice GetSample(StreamDataBlockInfo SampleInfo)
{
Slice ans = new Slice();
ans.SliceBytes = new byte[SampleInfo.SliceSize];
//ParentStream.EnterMutex();
ParentStream.Stream.Position = (long)SampleInfo.StreamOffset; // if this GetSample call follows another one, file should be in position
ParentStream.Stream.Read(ans.SliceBytes, 0, SampleInfo.SliceSize);
//ParentStream.LeaveMutex();
ans.Copy(SampleInfo);
return(ans);
}
public override Slice GetSample(StreamDataBlockInfo SampleInfo)
{
Slice ans = new Slice();
ans.SliceBytes = new byte[SampleInfo.SliceSize];
//ParentStream.EnterMutex();
ISMVTrackFormat ismvFormat = TrackFormat as ISMVTrackFormat;
ismvFormat.boxReader.BaseStream.Position = (long)SampleInfo.StreamOffset; // if this GetSample call follows another one, file should be in position
ismvFormat.boxReader.BaseStream.Read(ans.SliceBytes, 0, SampleInfo.SliceSize);
//ParentStream.LeaveMutex();
ans.Copy(SampleInfo);
return(ans);
}
public override Slice GetSample(StreamDataBlockInfo SampleInfo)
{
int delimiterLength = 0;
Slice ans = new Slice();
ans.Copy(SampleInfo);
ans.SliceBytes = new byte[SampleInfo.SliceSize];
#if REMOVE_EXTRA_SPS
NaluDelimiterBlockInfo blockInfo = SampleInfo as NaluDelimiterBlockInfo;
if (blockInfo.AccessUnitDelimiter != null)
{
delimiterLength = blockInfo.AccessUnitDelimiter.Length + 4; // access unit delimiter length is always 2
ans.SliceBytes[3] = (byte)(delimiterLength - 4); // assume that SliceBytes[0 to 2] are all zeroes, we only need to set LSB
blockInfo.AccessUnitDelimiter.CopyTo(ans.SliceBytes, 4);
}
#endif
//ParentStream.Stream.Position = (long)SampleInfo.StreamOffset;
// remove empty NALUs (length == 0)
// also remove trailing bytes, if any, from each NALU
Slice inSlice = SampleInfo as Slice;
BinaryReader br = new BinaryReader(new MemoryStream(inSlice.SliceBytes));
//BinaryReader br = new BinaryReader(ParentStream.Stream);
int totalSize = SampleInfo.SliceSize - delimiterLength;
int offset = delimiterLength;
while (totalSize > 4)
{
ulong naluLen = QBox.BE32(br.ReadUInt32());
if (naluLen > 0UL)
{
br.BaseStream.Position -= 4;
int readLen = (int)naluLen + 4;
br.Read(ans.SliceBytes, offset, readLen);
offset += readLen;
totalSize -= readLen;
}
else
{
naluLen = 0; // debugging break point
}
}
return(ans);
}
public override Slice GetSample(StreamDataBlockInfo SampleInfo)
{
Slice ans = new Slice();
ans.Copy(SampleInfo);
ans.SliceBytes = new byte[SampleInfo.SliceSize];
// read H264 payload for display and processing --
// for display:
ParentStream.Stream.Position = (long)ans.StreamOffset;
ParentStream.Stream.Read(ans.SliceBytes, 0, ans.SliceSize);
// for processing:
// (hand-off the payload processing to a separate thread so this method
// can return immediately)
#if MV_Centerus
H264Sample sample = new H264Sample(_sps, _pps, ans.SliceSize);
sample.SampleDoneEvent += CompletionCallback;
sample.ParseSample(ans.SliceBytes); // async call
samples.Add(sample);
#endif
return (ans);
}
public override Slice GetSample(StreamDataBlockInfo SampleInfo)
{
Slice ans = new Slice();
ans.Copy(SampleInfo);
ans.SliceBytes = new byte[SampleInfo.SliceSize];
// read H264 payload for display and processing --
// for display:
ParentStream.Stream.Position = (long)ans.StreamOffset;
ParentStream.Stream.Read(ans.SliceBytes, 0, ans.SliceSize);
// for processing:
// (hand-off the payload processing to a separate thread so this method
// can return immediately)
#if MV_Centerus
H264Sample sample = new H264Sample(_sps, _pps, ans.SliceSize);
sample.SampleDoneEvent += CompletionCallback;
sample.ParseSample(ans.SliceBytes); // async call
samples.Add(sample);
#endif
return(ans);
}
public override Slice GetSample(StreamDataBlockInfo SampleInfo)
{
int delimiterLength = 0;
Slice ans = new Slice();
ans.Copy(SampleInfo);
ans.SliceBytes = new byte[SampleInfo.SliceSize];
#if REMOVE_EXTRA_SPS
NaluDelimiterBlockInfo blockInfo = SampleInfo as NaluDelimiterBlockInfo;
if (blockInfo.AccessUnitDelimiter != null)
{
delimiterLength = blockInfo.AccessUnitDelimiter.Length + 4; // access unit delimiter length is always 2
ans.SliceBytes[3] = (byte)(delimiterLength - 4); // assume that SliceBytes[0 to 2] are all zeroes, we only need to set LSB
blockInfo.AccessUnitDelimiter.CopyTo(ans.SliceBytes, 4);
}
#endif
//ParentStream.Stream.Position = (long)SampleInfo.StreamOffset;
// remove empty NALUs (length == 0)
// also remove trailing bytes, if any, from each NALU
Slice inSlice = SampleInfo as Slice;
BinaryReader br = new BinaryReader(new MemoryStream(inSlice.SliceBytes));
//BinaryReader br = new BinaryReader(ParentStream.Stream);
int totalSize = SampleInfo.SliceSize - delimiterLength;
int offset = delimiterLength;
while (totalSize > 4)
{
ulong naluLen = QBox.BE32(br.ReadUInt32());
if (naluLen > 0UL)
{
br.BaseStream.Position -= 4;
int readLen = (int)naluLen + 4;
br.Read(ans.SliceBytes, offset, readLen);
offset += readLen;
totalSize -= readLen;
}
else naluLen = 0; // debugging break point
}
return (ans);
}
public override Slice GetSample(StreamDataBlockInfo SampleInfo)
{
ADTSDataBlockInfo adtsInfo = (ADTSDataBlockInfo)SampleInfo;
Slice ans = new Slice();
ans.Copy(SampleInfo);
#if ADTS
if (adtsInfo.PESandADTSHeaders == null) // ADTS header may be absent, in which case we use the normal base.GetSample
{
return base.GetSample(SampleInfo);
}
int headerCount = adtsInfo.PESandADTSHeaders.Length;
ans.SliceBytes = new byte[adtsInfo.SliceSize]; // SampleSize has already been incremented by length of PES + ADTS header
adtsInfo.PESandADTSHeaders.CopyTo(ans.SliceBytes, 0);
//if (ParentStream.Stream.Position != (long)adtsInfo.StreamOffset)
// ParentStream.Stream.Position = (long)adtsInfo.StreamOffset; // this if statement for debugging: just to be able to put a breakpoint here
BinaryReader reader = new BinaryReader(new MemoryStream(adtsInfo.SliceBytes));
//ParentStream.Stream.Read(ans.SliceBytes, headerCount, adtsInfo.SliceSize - headerCount);
reader.Read(ans.SliceBytes, headerCount, adtsInfo.SliceSize - headerCount);
#else
ans.SliceBytes = adtsInfo.SliceBytes;
#endif
return (ans);
}
public override Slice GetSample(StreamDataBlockInfo SampleInfo)
{
ADTSDataBlockInfo adtsInfo = (ADTSDataBlockInfo)SampleInfo;
Slice ans = new Slice();
ans.Copy(SampleInfo);
#if ADTS
if (adtsInfo.PESandADTSHeaders == null) // ADTS header may be absent, in which case we use the normal base.GetSample
{
return(base.GetSample(SampleInfo));
}
int headerCount = adtsInfo.PESandADTSHeaders.Length;
ans.SliceBytes = new byte[adtsInfo.SliceSize]; // SampleSize has already been incremented by length of PES + ADTS header
adtsInfo.PESandADTSHeaders.CopyTo(ans.SliceBytes, 0);
//if (ParentStream.Stream.Position != (long)adtsInfo.StreamOffset)
// ParentStream.Stream.Position = (long)adtsInfo.StreamOffset; // this if statement for debugging: just to be able to put a breakpoint here
BinaryReader reader = new BinaryReader(new MemoryStream(adtsInfo.SliceBytes));
//ParentStream.Stream.Read(ans.SliceBytes, headerCount, adtsInfo.SliceSize - headerCount);
reader.Read(ans.SliceBytes, headerCount, adtsInfo.SliceSize - headerCount);
#else
ans.SliceBytes = adtsInfo.SliceBytes;
#endif
return(ans);
}
public Task <(FdbValueCheckResult Result, Slice Actual)> CheckValueAsync(ReadOnlySpan <byte> key, Slice expected, bool snapshot, CancellationToken ct)
{
return(FdbFuture.CreateTaskFromHandle(
FdbNative.TransactionGet(m_handle, key, snapshot),
(h) =>
{
if (TryPeekValueResultBytes(h, out var actual))
{ // key exists
return !expected.IsNull && expected.Span.SequenceEqual(actual) ? (FdbValueCheckResult.Success, expected) : (FdbValueCheckResult.Failed, Slice.Copy(actual));
}