public void WriteNewFile()
{
byte[] ZERO = new byte[10];
for (int z = 0; z < Slices.Count; z++)
{
var jumpTable = JumpTables[z];
var slice = Slices[z];
var span = slice.Span;
var path = Path.Combine(FileInfo.DirectoryName, Path.GetFileNameWithoutExtension(FileInfo.FullName) + "_fixed_" + z + ".flv");
using (var write = new FileStream(path, FileMode.CreateNew, FileAccess.ReadWrite, FileShare.None))
{
write.Write(FLVSTART, 0, 13);
{
// 写 script tag
var script = span[0];
var metabytes = new byte[script.TagSize];
Input.Seek(script.Position + 11, SeekOrigin.Begin);
Input.Read(metabytes, 0, metabytes.Length);
var meta = new FlvMetadata(metabytes);
var writemetabytes = meta.ToBytes();
write.WriteByte((byte)script.TagType);
var size = BitConverter.GetBytes(writemetabytes.Length).ToBE();
write.Write(size, 1, 3);
write.Write(ZERO, 0, 3 + 1 + 3);
write.Write(writemetabytes, 0, writemetabytes.Length);
write.Write(BitConverter.GetBytes(11 + writemetabytes.Length).ToBE(), 0, 4);
}
int offset = span[1].TimeStamp;
int lastTimestamp = 0;
for (int i = 1; i < span.Length; i++)
{
Input.Seek(span[i].Position, SeekOrigin.Begin);
Input.CopyBytes(write, 4);
Input.Seek(4, SeekOrigin.Current);
if (!span[i].Flag.HasFlag(TagFlag.SameAsLastTimestamp))
{
if (jumpTable.ContainsKey(span[i].Position))
{
offset -= jumpTable[span[i].Position];
}
lastTimestamp = span[i].TimeStamp - offset;
}
byte[] timing = BitConverter.GetBytes(lastTimestamp).ToBE();
write.Write(timing, 1, 3);
write.WriteByte(timing[0]);
Input.CopyBytes(write, 3 + span[i].TagSize + 4);
}
write.Seek(49, SeekOrigin.Begin);
write.Write(BitConverter.GetBytes(lastTimestamp / 1000d).ToBE(), 0, sizeof(double));
}
}
}
