@ -13,13 +13,69 @@ namespace SixLabors.ImageSharp.Memory
/// <summary>
/// Defines extension methods for <see cref="Buffer2D{T}"/>.
/// </summary>
internal static class Buffer2DExtensions
public static class Buffer2DExtensions
{
/// <summary>
/// Gets a <see cref="Span{T}"/> to the backing buffer of <paramref name="buffer"/>.
/// </summary>
/// <param name="buffer">The <see cref="Buffer2D{T}"/>.</param>
/// <typeparam name="T">The value type.</typeparam>
/// <returns>The <see cref="Span{T}"/> referencing the memory area.</returns>
public static Span < T > GetSpan < T > ( this Buffer2D < T > buffer )
where T : struct
{
Guard . NotNull ( buffer , nameof ( buffer ) ) ;
return buffer . MemorySource . GetSpan ( ) ;
}
/// <summary>
/// Gets the <see cref="Memory{T}"/> holding the backing buffer of <paramref name="buffer"/>.
/// </summary>
/// <param name="buffer">The <see cref="Buffer2D{T}"/>.</param>
/// <typeparam name="T">The value type.</typeparam>
/// <returns>The <see cref="Memory{T}"/>.</returns>
public static Memory < T > GetMemory < T > ( this Buffer2D < T > buffer )
where T : struct
{
Guard . NotNull ( buffer , nameof ( buffer ) ) ;
return buffer . MemorySource . Memory ;
}
/// <summary>
/// Gets a <see cref="Span{T}"/> to the row 'y' beginning from the pixel at the first pixel on that row.
/// </summary>
/// <param name="buffer">The buffer</param>
/// <param name="y">The y (row) coordinate</param>
/// <typeparam name="T">The element type</typeparam>
/// <returns>The <see cref="Span{T}"/></returns>
[MethodImpl(MethodImplOptions.AggressiveInlining)]
public static Span < T > GetRowSpan < T > ( this Buffer2D < T > buffer , int y )
where T : struct
{
Guard . NotNull ( buffer , nameof ( buffer ) ) ;
return buffer . GetSpan ( ) . Slice ( y * buffer . Width , buffer . Width ) ;
}
/// <summary>
/// Gets a <see cref="Memory{T}"/> to the row 'y' beginning from the pixel at the first pixel on that row.
/// </summary>
/// <param name="buffer">The buffer</param>
/// <param name="y">The y (row) coordinate</param>
/// <typeparam name="T">The element type</typeparam>
/// <returns>The <see cref="Span{T}"/></returns>
[MethodImpl(MethodImplOptions.AggressiveInlining)]
public static Memory < T > GetRowMemory < T > ( this Buffer2D < T > buffer , int y )
where T : struct
{
Guard . NotNull ( buffer , nameof ( buffer ) ) ;
return buffer . MemorySource . Memory . Slice ( y * buffer . Width , buffer . Width ) ;
}
/// <summary>
/// Copy <paramref name="columnCount"/> columns of <paramref name="buffer"/> inplace,
/// from positions starting at <paramref name="sourceIndex"/> to positions at <paramref name="destIndex"/>.
/// </summary>
public static unsafe void CopyColumns < T > (
internal static unsafe void CopyColumns < T > (
this Buffer2D < T > buffer ,
int sourceIndex ,
int destIndex ,
@ -37,7 +93,7 @@ namespace SixLabors.ImageSharp.Memory
int dOffset = destIndex * elementSize ;
long count = columnCount * elementSize ;
Span < byte > span = MemoryMarshal . AsBytes ( buffer . Memory . Span ) ;
Span < byte > span = MemoryMarshal . AsBytes ( buffer . Get Memory( ) . Span ) ;
fixed ( byte * ptr = span )
{
@ -60,7 +116,7 @@ namespace SixLabors.ImageSharp.Memory
/// <typeparam name="T">The element type</typeparam>
/// <param name="buffer">The <see cref="Buffer2D{T}"/></param>
/// <returns>The <see cref="Rectangle"/></returns>
public static Rectangle FullRectangle < T > ( this Buffer2D < T > buffer )
internal static Rectangle FullRectangle < T > ( this Buffer2D < T > buffer )
where T : struct
{
return new Rectangle ( 0 , 0 , buffer . Width , buffer . Height ) ;
@ -73,11 +129,11 @@ namespace SixLabors.ImageSharp.Memory
/// <param name="buffer">The <see cref="Buffer2D{T}"/></param>
/// <param name="rectangle">The rectangle subarea</param>
/// <returns>The <see cref="BufferArea{T}"/></returns>
public static BufferArea < T > GetArea < T > ( this Buffer2D < T > buffer , in Rectangle rectangle )
internal static BufferArea < T > GetArea < T > ( this Buffer2D < T > buffer , in Rectangle rectangle )
where T : struct = >
new BufferArea < T > ( buffer , rectangle ) ;
public static BufferArea < T > GetArea < T > ( this Buffer2D < T > buffer , int x , int y , int width , int height )
internal static BufferArea < T > GetArea < T > ( this Buffer2D < T > buffer , int x , int y , int width , int height )
where T : struct = >
new BufferArea < T > ( buffer , new Rectangle ( x , y , width , height ) ) ;
@ -87,64 +143,17 @@ namespace SixLabors.ImageSharp.Memory
/// <typeparam name="T">The element type</typeparam>
/// <param name="buffer">The <see cref="Buffer2D{T}"/></param>
/// <returns>The <see cref="BufferArea{T}"/></returns>
public static BufferArea < T > GetArea < T > ( this Buffer2D < T > buffer )
internal static BufferArea < T > GetArea < T > ( this Buffer2D < T > buffer )
where T : struct = >
new BufferArea < T > ( buffer ) ;
public static BufferArea < T > GetAreaBetweenRows < T > ( this Buffer2D < T > buffer , int minY , int maxY )
where T : struct = >
new BufferArea < T > ( buffer , new Rectangle ( 0 , minY , buffer . Width , maxY - minY ) ) ;
/// <summary>
/// Gets a span for all the pixels in <paramref name="buffer"/> defined by <paramref name="rows"/>
/// </summary>
public static Span < T > GetMultiRowSpan < T > ( this Buffer2D < T > buffer , in RowInterval rows )
internal static Span < T > GetMultiRowSpan < T > ( this Buffer2D < T > buffer , in RowInterval rows )
where T : struct
{
return buffer . Span . Slice ( rows . Min * buffer . Width , rows . Height * buffer . Width ) ;
}
/// <summary>
/// Gets a <see cref="Memory{T}"/> to the row 'y' beginning from the pixel at the first pixel on that row.
/// </summary>
/// <param name="buffer">The buffer</param>
/// <param name="y">The y (row) coordinate</param>
/// <typeparam name="T">The element type</typeparam>
/// <returns>The <see cref="Span{T}"/></returns>
[MethodImpl(MethodImplOptions.AggressiveInlining)]
public static Memory < T > GetRowMemory < T > ( this Buffer2D < T > buffer , int y )
where T : struct
{
return buffer . MemorySource . Memory . Slice ( y * buffer . Width , buffer . Width ) ;
}
/// <summary>
/// Gets a <see cref="Span{T}"/> to the row 'y' beginning from the pixel at 'x'.
/// </summary>
/// <param name="buffer">The buffer</param>
/// <param name="x">The x coordinate (position in the row)</param>
/// <param name="y">The y (row) coordinate</param>
/// <typeparam name="T">The element type</typeparam>
/// <returns>The <see cref="Span{T}"/></returns>
[MethodImpl(MethodImplOptions.AggressiveInlining)]
public static Span < T > GetRowSpan < T > ( this Buffer2D < T > buffer , int x , int y )
where T : struct
{
return buffer . GetSpan ( ) . Slice ( ( y * buffer . Width ) + x , buffer . Width - x ) ;
}
/// <summary>
/// Gets a <see cref="Span{T}"/> to the row 'y' beginning from the pixel at the first pixel on that row.
/// </summary>
/// <param name="buffer">The buffer</param>
/// <param name="y">The y (row) coordinate</param>
/// <typeparam name="T">The element type</typeparam>
/// <returns>The <see cref="Span{T}"/></returns>
[MethodImpl(MethodImplOptions.AggressiveInlining)]
public static Span < T > GetRowSpan < T > ( this Buffer2D < T > buffer , int y )
where T : struct
{
return buffer . GetSpan ( ) . Slice ( y * buffer . Width , buffer . Width ) ;
return buffer . GetSpan ( ) . Slice ( rows . Min * buffer . Width , rows . Height * buffer . Width ) ;
}
/// <summary>
@ -153,21 +162,12 @@ namespace SixLabors.ImageSharp.Memory
/// <typeparam name="T">The element type</typeparam>
/// <param name="buffer">The <see cref="Buffer2D{T}"/></param>
/// <returns>The <see cref="Size{T}"/> of the buffer</returns>
public static Size Size < T > ( this Buffer2D < T > buffer )
internal static Size Size < T > ( this Buffer2D < T > buffer )
where T : struct
{
return new Size ( buffer . Width , buffer . Height ) ;
}
/// <summary>
/// Gets a <see cref="Span{T}"/> to the backing buffer of <paramref name="buffer"/>.
/// </summary>
internal static Span < T > GetSpan < T > ( this Buffer2D < T > buffer )
where T : struct
{
return buffer . MemorySource . GetSpan ( ) ;
}
[Conditional("DEBUG")]
private static void CheckColumnRegionsDoNotOverlap < T > (
Buffer2D < T > buffer ,
James Jackson-South
6 years ago
GitHub