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authorgdk <gab.dark.100@gmail.com>2019-10-13 03:02:07 -0300
committerThog <thog@protonmail.com>2020-01-09 02:13:00 +0100
commit1876b346fea647e8284a66bb6d62c38801035cff (patch)
tree6eeff094298cda84d1613dc5ec0691e51d7b35f1 /Ryujinx.Graphics/VDec/H264BitStreamWriter.cs
parentf617fb542a0e3d36012d77a4b5acbde7b08902f2 (diff)
Initial work
Diffstat (limited to 'Ryujinx.Graphics/VDec/H264BitStreamWriter.cs')
-rw-r--r--Ryujinx.Graphics/VDec/H264BitStreamWriter.cs79
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;
- }
- }
-} \ No newline at end of file