mirror of
https://github.com/ryujinx-mirror/ryujinx.git
synced 2024-12-23 07:45:45 +00:00
c86aacde76
* Initial nvdec implementation using FFmpeg * Fix swapped channels on the video decoder and the G8R8 texture format * Fix texture samplers not being set properly (regression) * Rebased * Remove unused code introduced on the rebase * Add support for RGBA8 output format on the video image composer * Correct spacing * Some fixes for rebase and other tweaks * Allow size mismatch on frame copy * Get rid of GetHostAddress calls on VDec
75 lines
No EOL
1.6 KiB
C#
75 lines
No EOL
1.6 KiB
C#
using System.IO;
|
|
|
|
namespace Ryujinx.Graphics.VDec
|
|
{
|
|
class BitStreamWriter
|
|
{
|
|
private const int BufferSize = 8;
|
|
|
|
private Stream BaseStream;
|
|
|
|
private int Buffer;
|
|
private int BufferPos;
|
|
|
|
public BitStreamWriter(Stream BaseStream)
|
|
{
|
|
this.BaseStream = BaseStream;
|
|
}
|
|
|
|
public void WriteBit(bool Value)
|
|
{
|
|
WriteBits(Value ? 1 : 0, 1);
|
|
}
|
|
|
|
public void WriteBits(int Value, int ValueSize)
|
|
{
|
|
int ValuePos = 0;
|
|
|
|
int Remaining = ValueSize;
|
|
|
|
while (Remaining > 0)
|
|
{
|
|
int CopySize = Remaining;
|
|
|
|
int Free = GetFreeBufferBits();
|
|
|
|
if (CopySize > Free)
|
|
{
|
|
CopySize = Free;
|
|
}
|
|
|
|
int Mask = (1 << CopySize) - 1;
|
|
|
|
int SrcShift = (ValueSize - ValuePos) - CopySize;
|
|
int DstShift = (BufferSize - BufferPos) - CopySize;
|
|
|
|
Buffer |= ((Value >> SrcShift) & Mask) << DstShift;
|
|
|
|
ValuePos += CopySize;
|
|
BufferPos += CopySize;
|
|
Remaining -= CopySize;
|
|
}
|
|
}
|
|
|
|
private int GetFreeBufferBits()
|
|
{
|
|
if (BufferPos == BufferSize)
|
|
{
|
|
Flush();
|
|
}
|
|
|
|
return BufferSize - BufferPos;
|
|
}
|
|
|
|
public void Flush()
|
|
{
|
|
if (BufferPos != 0)
|
|
{
|
|
BaseStream.WriteByte((byte)Buffer);
|
|
|
|
Buffer = 0;
|
|
BufferPos = 0;
|
|
}
|
|
}
|
|
}
|
|
} |