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Enable multithreaded VP9 decoding (#2009)

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* Enable multithreaded VP9 decoding

* Limit the number of threads used for video decoding
This commit is contained in:
gdkchan 2021-02-10 21:54:42 -03:00 • committed by GitHub
parent 172ec326e5
commit c465d771dd
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GPG key ID: 4AEE18F83AFDEB23
6 changed files with 252 additions and 9 deletions
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18
Ryujinx.Graphics.Nvdec.Vp9/Decoder.cs
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@ -92,7 +92,14 @@ namespace Ryujinx.Graphics.Nvdec.Vp9
cm.Mb.SetupBlockPlanes(1, 1);
cm.AllocTileWorkerData(_allocator, 1 << pictureInfo.Log2TileCols, 1 << pictureInfo.Log2TileRows);
int tileCols = 1 << pictureInfo.Log2TileCols;
int tileRows = 1 << pictureInfo.Log2TileRows;
// Video usually have only 4 columns, so more threads won't make a difference for those.
// Try to not take all CPU cores for video decoding.
int maxThreads = Math.Min(4, Environment.ProcessorCount / 2);
cm.AllocTileWorkerData(_allocator, tileCols, tileRows, maxThreads);
cm.AllocContextBuffers(_allocator, output.Width, output.Height);
cm.InitContextBuffers();
cm.SetupSegmentationDequant();
@ -104,7 +111,14 @@ namespace Ryujinx.Graphics.Nvdec.Vp9
{
try
{
DecodeFrame.DecodeTiles(ref cm, new ArrayPtr<byte>(dataPtr, bitstream.Length));
if (maxThreads > 1 && tileRows == 1 && tileCols > 1)
{
DecodeFrame.DecodeTilesMt(ref cm, new ArrayPtr<byte>(dataPtr, bitstream.Length), maxThreads);
}
else
{
DecodeFrame.DecodeTiles(ref cm, new ArrayPtr<byte>(dataPtr, bitstream.Length));
}
}
catch (InternalErrorException)
{