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<title>Ryujinx/src/Ryujinx.Tests/Common/Extensions, branch master</title>
<subtitle>A backup of the Ryujinx master git branch.
</subtitle>
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<entry>
<title>Audio rendering: reduce memory allocations (#6604)</title>
<updated>2024-04-07T21:07:32+00:00</updated>
<author>
<name>jhorv</name>
<email>38920027+jhorv@users.noreply.github.com</email>
</author>
<published>2024-04-07T21:07:32+00:00</published>
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<content type='text'>
* - WritableRegion: enable wrapping IMemoryOwner&lt;byte&gt;
- IVirtualMemoryManager impls of GetWritableRegion() use pooled memory when region is non-contiguous.
- IVirtualMemoryManager: add GetReadOnlySequence() and impls
- ByteMemoryPool: add new method RentCopy()
- ByteMemoryPool: make class static, remove ctor and singleton field from earlier impl

* - BytesReadOnlySequenceSegment: move from Ryujinx.Common.Memory to Ryujinx.Memory
- BytesReadOnlySequenceSegment: add IsContiguousWith() and Replace() methods
- VirtualMemoryManagerBase:
  - remove generic type parameters, instead use ulong for virtual addresses and nuint for host/physical addresses
  - implement IWritableBlock
  - add virtual GetReadOnlySequence() with coalescing of contiguous segments
  - add virtual GetSpan()
  - add virtual GetWritableRegion()
  - add abstract IsMapped()
  - add virtual MapForeign(ulong, nuint, ulong)
  - add virtual Read&lt;T&gt;()
  - add virtual Read(ulong, Span&lt;byte&gt;)
  - add virtual ReadTracked&lt;T&gt;()
  - add virtual SignalMemoryTracking()
  - add virtual Write()
  - add virtual Write&lt;T&gt;()
  - add virtual WriteUntracked()
  - add virtual WriteWithRedundancyCheck()
- VirtualMemoryManagerRefCountedBase: remove generic type parameters
- AddressSpaceManager: remove redundant methods, add required overrides
- HvMemoryManager: remove redundant methods, add required overrides, add overrides for _invalidAccessHandler handling
- MemoryManager: remove redundant methods, add required overrides, add overrides for _invalidAccessHandler handling
- MemoryManagerHostMapped: remove redundant methods, add required overrides, add overrides for _invalidAccessHandler handling
- NativeMemoryManager: add get properties for Pointer and Length
- throughout: removed invalid &lt;inheritdoc/&gt; comments

* - WritableRegion: enable wrapping IMemoryOwner&lt;byte&gt;
- IVirtualMemoryManager impls of GetWritableRegion() use pooled memory when region is non-contiguous.
- IVirtualMemoryManager: add GetReadOnlySequence() and impls
- ByteMemoryPool: add new method RentCopy()
- ByteMemoryPool: make class static, remove ctor and singleton field from earlier impl

* add PagedMemoryRange enumerator types, use them in IVirtualMemoryManager implementations to consolidate page-handling logic and add a new capability - the coalescing of pages for consolidating memory copies and segmentation.

* new: more tests for PagedMemoryRangeCoalescingEnumerator showing coalescing of contiguous segments

* make some struct properties readonly

* put braces around `foreach` bodies

* encourage inlining of some PagedMemoryRange*Enumerator members

* DynamicRingBuffer:
 - use ByteMemoryPool
 - make some methods return without locking when size/count argument = 0
 - make generic Read&lt;T&gt;()/Write&lt;T&gt;() non-generic because its only usage is as T = byte
 - change Read(byte[]...) to Read(Span&lt;byte&gt;...)
 - change Write(byte[]...) to Write(Span&lt;byte&gt;...)

* change IAudioRenderer.RequestUpdate() to take a ReadOnlySequence&lt;byte&gt;, enabling zero-copy audio rendering

* HipcGenerator: support ReadOnlySequence&lt;byte&gt; as IPC method parameter

* change IAudioRenderer/AudioRenderer RequestUpdate* methods to take input as ReadOnlySequence&lt;byte&gt;

* MemoryManagerHostTracked: use rented memory when contiguous in `GetWritableRegion()`

* rebase cleanup

* dotnet format fixes

* format and comment fixes

* format long parameter list - take 2

* - add support to HipcGenerator for buffers of type `Memory&lt;byte&gt;`
- change `AudioRenderer` `RequestUpdate()` and `RequestUpdateAuto()` to use Memory&lt;byte&gt; for output buffers, removing another memory block allocation/copy

* SplitterContext `UpdateState()` and `UpdateData()` smooth out advance/rewind logic, only rewind if magic is invalid

* DynamicRingBuffer.Write(): change Span&lt;byte&gt; to ReadOnlySpan&lt;byte&gt;</content>
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<pre>
* - WritableRegion: enable wrapping IMemoryOwner&lt;byte&gt;
- IVirtualMemoryManager impls of GetWritableRegion() use pooled memory when region is non-contiguous.
- IVirtualMemoryManager: add GetReadOnlySequence() and impls
- ByteMemoryPool: add new method RentCopy()
- ByteMemoryPool: make class static, remove ctor and singleton field from earlier impl

* - BytesReadOnlySequenceSegment: move from Ryujinx.Common.Memory to Ryujinx.Memory
- BytesReadOnlySequenceSegment: add IsContiguousWith() and Replace() methods
- VirtualMemoryManagerBase:
  - remove generic type parameters, instead use ulong for virtual addresses and nuint for host/physical addresses
  - implement IWritableBlock
  - add virtual GetReadOnlySequence() with coalescing of contiguous segments
  - add virtual GetSpan()
  - add virtual GetWritableRegion()
  - add abstract IsMapped()
  - add virtual MapForeign(ulong, nuint, ulong)
  - add virtual Read&lt;T&gt;()
  - add virtual Read(ulong, Span&lt;byte&gt;)
  - add virtual ReadTracked&lt;T&gt;()
  - add virtual SignalMemoryTracking()
  - add virtual Write()
  - add virtual Write&lt;T&gt;()
  - add virtual WriteUntracked()
  - add virtual WriteWithRedundancyCheck()
- VirtualMemoryManagerRefCountedBase: remove generic type parameters
- AddressSpaceManager: remove redundant methods, add required overrides
- HvMemoryManager: remove redundant methods, add required overrides, add overrides for _invalidAccessHandler handling
- MemoryManager: remove redundant methods, add required overrides, add overrides for _invalidAccessHandler handling
- MemoryManagerHostMapped: remove redundant methods, add required overrides, add overrides for _invalidAccessHandler handling
- NativeMemoryManager: add get properties for Pointer and Length
- throughout: removed invalid &lt;inheritdoc/&gt; comments

* - WritableRegion: enable wrapping IMemoryOwner&lt;byte&gt;
- IVirtualMemoryManager impls of GetWritableRegion() use pooled memory when region is non-contiguous.
- IVirtualMemoryManager: add GetReadOnlySequence() and impls
- ByteMemoryPool: add new method RentCopy()
- ByteMemoryPool: make class static, remove ctor and singleton field from earlier impl

* add PagedMemoryRange enumerator types, use them in IVirtualMemoryManager implementations to consolidate page-handling logic and add a new capability - the coalescing of pages for consolidating memory copies and segmentation.

* new: more tests for PagedMemoryRangeCoalescingEnumerator showing coalescing of contiguous segments

* make some struct properties readonly

* put braces around `foreach` bodies

* encourage inlining of some PagedMemoryRange*Enumerator members

* DynamicRingBuffer:
 - use ByteMemoryPool
 - make some methods return without locking when size/count argument = 0
 - make generic Read&lt;T&gt;()/Write&lt;T&gt;() non-generic because its only usage is as T = byte
 - change Read(byte[]...) to Read(Span&lt;byte&gt;...)
 - change Write(byte[]...) to Write(Span&lt;byte&gt;...)

* change IAudioRenderer.RequestUpdate() to take a ReadOnlySequence&lt;byte&gt;, enabling zero-copy audio rendering

* HipcGenerator: support ReadOnlySequence&lt;byte&gt; as IPC method parameter

* change IAudioRenderer/AudioRenderer RequestUpdate* methods to take input as ReadOnlySequence&lt;byte&gt;

* MemoryManagerHostTracked: use rented memory when contiguous in `GetWritableRegion()`

* rebase cleanup

* dotnet format fixes

* format and comment fixes

* format long parameter list - take 2

* - add support to HipcGenerator for buffers of type `Memory&lt;byte&gt;`
- change `AudioRenderer` `RequestUpdate()` and `RequestUpdateAuto()` to use Memory&lt;byte&gt; for output buffers, removing another memory block allocation/copy

* SplitterContext `UpdateState()` and `UpdateData()` smooth out advance/rewind logic, only rewind if magic is invalid

* DynamicRingBuffer.Write(): change Span&lt;byte&gt; to ReadOnlySpan&lt;byte&gt;</pre>
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