diff options
| author | gdk <gab.dark.100@gmail.com> | 2019-10-13 03:02:07 -0300 |
|---|---|---|
| committer | Thog <thog@protonmail.com> | 2020-01-09 02:13:00 +0100 |
| commit | 1876b346fea647e8284a66bb6d62c38801035cff (patch) | |
| tree | 6eeff094298cda84d1613dc5ec0691e51d7b35f1 /Ryujinx.Graphics/VDec/H264BitStreamWriter.cs | |
| parent | f617fb542a0e3d36012d77a4b5acbde7b08902f2 (diff) | |
Initial work
Diffstat (limited to 'Ryujinx.Graphics/VDec/H264BitStreamWriter.cs')
| -rw-r--r-- | Ryujinx.Graphics/VDec/H264BitStreamWriter.cs | 79 |
1 files changed, 0 insertions, 79 deletions
diff --git a/Ryujinx.Graphics/VDec/H264BitStreamWriter.cs b/Ryujinx.Graphics/VDec/H264BitStreamWriter.cs deleted file mode 100644 index b4fad59b..00000000 --- a/Ryujinx.Graphics/VDec/H264BitStreamWriter.cs +++ /dev/null @@ -1,79 +0,0 @@ -using System.IO; - -namespace Ryujinx.Graphics.VDec -{ - class H264BitStreamWriter : BitStreamWriter - { - public H264BitStreamWriter(Stream baseStream) : base(baseStream) { } - - public void WriteU(int value, int valueSize) - { - WriteBits(value, valueSize); - } - - public void WriteSe(int value) - { - WriteExpGolombCodedInt(value); - } - - public void WriteUe(int value) - { - WriteExpGolombCodedUInt((uint)value); - } - - public void End() - { - WriteBit(true); - - Flush(); - } - - private void WriteExpGolombCodedInt(int value) - { - int sign = value <= 0 ? 0 : 1; - - if (value < 0) - { - value = -value; - } - - value = (value << 1) - sign; - - WriteExpGolombCodedUInt((uint)value); - } - - private void WriteExpGolombCodedUInt(uint value) - { - int size = 32 - CountLeadingZeros((int)value + 1); - - WriteBits(1, size); - - value -= (1u << (size - 1)) - 1; - - WriteBits((int)value, size - 1); - } - - private static readonly byte[] ClzNibbleTbl = { 4, 3, 2, 2, 1, 1, 1, 1, 0, 0, 0, 0, 0, 0, 0, 0 }; - - private static int CountLeadingZeros(int value) - { - if (value == 0) - { - return 32; - } - - int nibbleIdx = 32; - int preCount, count = 0; - - do - { - nibbleIdx -= 4; - preCount = ClzNibbleTbl[(value >> nibbleIdx) & 0b1111]; - count += preCount; - } - while (preCount == 4); - - return count; - } - } -}
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