public virtual void AddSample(Mp4Stream dataStream, ulong offset, uint size, uint duration, uint descriptionIndex, ulong dts, uint ctsDelta, bool sync)
{
if (this.samples.Count > 0)
{
Mp4Sample sample = this.samples[this.samples.Count - 1];
if (dts == 0L)
{
if (sample.Duration == 0)
{
throw new Exception("INVALID_PARAMETERS");
}
dts = sample.Dts + sample.Duration;
}
else if (sample.Duration == 0)
{
if (dts <= sample.Dts)
{
throw new Exception("INVALID_PARAMETERS");
}
sample.Duration = (uint)(dts - sample.Dts);
}
else if (dts != (sample.Dts + sample.Duration))
{
throw new Exception("INVALID_PARAMETERS");
}
}
Mp4Sample item = new Mp4Sample(dataStream, (long)offset, (int)size, duration, descriptionIndex, dts, ctsDelta, sync);
this.samples.Add(item);
}
public virtual Mp4ContainerBox GenerateStblAtom()
{
Mp4ContainerBox box = new Mp4ContainerBox(8, Mp4BoxType.STBL);
Mp4StsdBox child = new Mp4StsdBox(this);
Mp4StszBox box3 = new Mp4StszBox();
Mp4StscBox box4 = new Mp4StscBox();
Mp4SttsBox box5 = new Mp4SttsBox();
Mp4StssBox box6 = new Mp4StssBox();
Mp4CttsBox box7 = null;
uint num = 0;
uint num2 = 0;
ulong item = 0L;
uint samplesPerChunk = 0;
uint descriptionIndex = 0;
uint sampleDelta = 0;
uint sampleCount = 0;
uint sampleOffset = 0;
uint num9 = 0;
List <ulong> list = new List <ulong>();
bool flag = false;
int num10 = this.SampleCount;
for (int i = 0; i < num10; i++)
{
Mp4Sample sample = this.GetSample(i);
uint duration = sample.Duration;
if ((duration != sampleDelta) && (sampleCount != 0))
{
box5.Entries.Add(new Mp4SttsEntry(sampleCount, sampleDelta));
sampleCount = 0;
}
sampleCount++;
sampleDelta = duration;
uint ctsDelta = sample.CtsDelta;
if ((ctsDelta != sampleOffset) && (num9 != 0))
{
if (box7 == null)
{
box7 = new Mp4CttsBox();
}
box7.Entries.Add(new Mp4CttsEntry(num9, sampleOffset));
num9 = 0;
}
num9++;
sampleOffset = ctsDelta;
descriptionIndex = sample.DescriptionIndex;
box3.Entries.Add((uint)sample.Size);
if (sample.IsSync)
{
box6.Entries.Add((uint)(i + 1));
if (i == 0)
{
flag = true;
}
}
else
{
flag = false;
}
uint chunkIndex = 0;
uint positionInChunk = 0;
this.GetSampleChunkPosition((uint)i, out chunkIndex, out positionInChunk);
if ((chunkIndex != num) && (samplesPerChunk != 0))
{
list.Add(item);
item += num2;
box4.Entries.Add(new Mp4StscEntry(1, samplesPerChunk, descriptionIndex + 1));
samplesPerChunk = 0;
num2 = 0;
}
num = chunkIndex;
num2 += (uint)sample.Size;
samplesPerChunk++;
}
box5.Entries.Add(new Mp4SttsEntry(sampleCount, sampleDelta));
if (box7 != null)
{
if (num9 == 0)
{
throw new Exception("ASSERT(current_cts_delta_run != 0)");
}
box7.Entries.Add(new Mp4CttsEntry(num9, sampleOffset));
}
if (samplesPerChunk != 0)
{
list.Add(item);
box4.Entries.Add(new Mp4StscEntry(1, samplesPerChunk, descriptionIndex + 1));
}
box.AddChild(child);
box.AddChild(box3);
box.AddChild(box4);
box.AddChild(box5);
if (box7 != null)
{
box.AddChild(box7);
}
if (!flag && (box6.Entries.Count != 0))
{
box.AddChild(box6);
}
uint count = (uint)list.Count;
if (item <= 0xffffffffL)
{
uint[] entries = new uint[count];
for (uint j = 0; j < count; j++)
{
entries[j] = (uint)list[(int)j];
}
Mp4StcoBox box8 = new Mp4StcoBox(entries);
box.AddChild(box8);
return(box);
}
Mp4Co64Box box9 = new Mp4Co64Box(list.ToArray());
box.AddChild(box9);
return(box);
}
public override Mp4Sample GetSample(int index)
{
ulong chunkOffset;
Mp4Sample sample = new Mp4Sample();
if ((this.StcoAtom == null) && (this.Co64Atom == null))
{
throw new Exception("INVALID_FORMAT");
}
index++;
this.StscAtom.GetChunkForSample((uint)index, out uint num, out uint num2, out uint num3);
if (num2 > index)
{
throw new Exception("ERROR_INTERNAL");
}
try
{
if (this.StcoAtom != null)
{
chunkOffset = this.StcoAtom.GetChunkOffset(num);
}
else
{
chunkOffset = this.Co64Atom.GetChunkOffset((int)num);
}
}
catch
{
return(null);
}
for (uint i = ((uint)index) - num2; i < index; i++)
{
uint num7 = this.StszAtom.GetSampleSize(i);
chunkOffset += num7;
}
sample.DescriptionIndex = num3 - 1;
uint ctsOffset = 0;
ulong dts = 0L;
uint duration = 0;
this.SttsAtom.GetDts(index, out dts, out duration);
sample.Duration = duration;
sample.Dts = dts;
if (this.CttsAtom == null)
{
sample.Cts = dts;
}
else
{
ctsOffset = this.CttsAtom.GetCtsOffset((uint)index);
sample.Cts = dts + ctsOffset;
}
uint sampleSize = this.StszAtom.GetSampleSize((uint)index);
sample.Size = (int)sampleSize;
if (this.StssAtom == null)
{
sample.IsSync = true;
}
else
{
sample.IsSync = this.StssAtom.IsSampleSync((uint)index);
}
sample.Offset = (int)chunkOffset;
sample.DataStream = this.SampleStream;
return(sample);
}