Pybuffer by koubaa · Pull Request #1195 · pythonnet/pythonnet
@@ -0,0 +1,106 @@
using System;
using System.Runtime.InteropServices;
namespace Python.Runtime { /* buffer interface */ [StructLayout(LayoutKind.Sequential, CharSet = CharSet.Auto)] internal struct Py_buffer { public IntPtr buf; public IntPtr obj; /* owned reference */ [MarshalAs(UnmanagedType.SysInt)] public IntPtr len; [MarshalAs(UnmanagedType.SysInt)] public IntPtr itemsize; /* This is Py_ssize_t so it can be pointed to by strides in simple case.*/ [MarshalAs(UnmanagedType.Bool)] public bool _readonly; public int ndim; [MarshalAs(UnmanagedType.LPStr)] public string format; public IntPtr shape; public IntPtr strides; public IntPtr suboffsets; public IntPtr _internal; }
public enum BufferOrderStyle { C, Fortran, EitherOne, }
/* Flags for getting buffers */ public enum PyBUF { /// <summary> /// Simple buffer without shape strides and suboffsets /// </summary> SIMPLE = 0, /// <summary> /// Controls the <see cref="PyBuffer.ReadOnly"/> field. If set, the exporter MUST provide a writable buffer or else report failure. Otherwise, the exporter MAY provide either a read-only or writable buffer, but the choice MUST be consistent for all consumers. /// </summary> WRITABLE = 0x0001, /// <summary> /// Controls the <see cref="PyBuffer.Format"/> field. If set, this field MUST be filled in correctly. Otherwise, this field MUST be NULL. /// </summary> FORMATS = 0x0004, /// <summary> /// N-Dimensional buffer with shape /// </summary> ND = 0x0008, /// <summary> /// Buffer with strides and shape /// </summary> STRIDES = (0x0010 | ND), /// <summary> /// C-Contigous buffer with strides and shape /// </summary> C_CONTIGUOUS = (0x0020 | STRIDES), /// <summary> /// F-Contigous buffer with strides and shape /// </summary> F_CONTIGUOUS = (0x0040 | STRIDES), /// <summary> /// C or Fortran contigous buffer with strides and shape /// </summary> ANY_CONTIGUOUS = (0x0080 | STRIDES), /// <summary> /// Buffer with suboffsets (if needed) /// </summary> INDIRECT = (0x0100 | STRIDES), /// <summary> /// Writable C-Contigous buffer with shape /// </summary> CONTIG = (ND | WRITABLE), /// <summary> /// Readonly C-Contigous buffer with shape /// </summary> CONTIG_RO = (ND), /// <summary> /// Writable buffer with shape and strides /// </summary> STRIDED = (STRIDES | WRITABLE), /// <summary> /// Readonly buffer with shape and strides /// </summary> STRIDED_RO = (STRIDES), /// <summary> /// Writable buffer with shape, strides and format /// </summary> RECORDS = (STRIDES | WRITABLE | FORMATS), /// <summary> /// Readonly buffer with shape, strides and format /// </summary> RECORDS_RO = (STRIDES | FORMATS), /// <summary> /// Writable indirect buffer with shape, strides, format and suboffsets (if needed) /// </summary> FULL = (INDIRECT | WRITABLE | FORMATS), /// <summary> /// Readonly indirect buffer with shape, strides, format and suboffsets (if needed) /// </summary> FULL_RO = (INDIRECT | FORMATS), } }
namespace Python.Runtime { /* buffer interface */ [StructLayout(LayoutKind.Sequential, CharSet = CharSet.Auto)] internal struct Py_buffer { public IntPtr buf; public IntPtr obj; /* owned reference */ [MarshalAs(UnmanagedType.SysInt)] public IntPtr len; [MarshalAs(UnmanagedType.SysInt)] public IntPtr itemsize; /* This is Py_ssize_t so it can be pointed to by strides in simple case.*/ [MarshalAs(UnmanagedType.Bool)] public bool _readonly; public int ndim; [MarshalAs(UnmanagedType.LPStr)] public string format; public IntPtr shape; public IntPtr strides; public IntPtr suboffsets; public IntPtr _internal; }
public enum BufferOrderStyle { C, Fortran, EitherOne, }
/* Flags for getting buffers */ public enum PyBUF { /// <summary> /// Simple buffer without shape strides and suboffsets /// </summary> SIMPLE = 0, /// <summary> /// Controls the <see cref="PyBuffer.ReadOnly"/> field. If set, the exporter MUST provide a writable buffer or else report failure. Otherwise, the exporter MAY provide either a read-only or writable buffer, but the choice MUST be consistent for all consumers. /// </summary> WRITABLE = 0x0001, /// <summary> /// Controls the <see cref="PyBuffer.Format"/> field. If set, this field MUST be filled in correctly. Otherwise, this field MUST be NULL. /// </summary> FORMATS = 0x0004, /// <summary> /// N-Dimensional buffer with shape /// </summary> ND = 0x0008, /// <summary> /// Buffer with strides and shape /// </summary> STRIDES = (0x0010 | ND), /// <summary> /// C-Contigous buffer with strides and shape /// </summary> C_CONTIGUOUS = (0x0020 | STRIDES), /// <summary> /// F-Contigous buffer with strides and shape /// </summary> F_CONTIGUOUS = (0x0040 | STRIDES), /// <summary> /// C or Fortran contigous buffer with strides and shape /// </summary> ANY_CONTIGUOUS = (0x0080 | STRIDES), /// <summary> /// Buffer with suboffsets (if needed) /// </summary> INDIRECT = (0x0100 | STRIDES), /// <summary> /// Writable C-Contigous buffer with shape /// </summary> CONTIG = (ND | WRITABLE), /// <summary> /// Readonly C-Contigous buffer with shape /// </summary> CONTIG_RO = (ND), /// <summary> /// Writable buffer with shape and strides /// </summary> STRIDED = (STRIDES | WRITABLE), /// <summary> /// Readonly buffer with shape and strides /// </summary> STRIDED_RO = (STRIDES), /// <summary> /// Writable buffer with shape, strides and format /// </summary> RECORDS = (STRIDES | WRITABLE | FORMATS), /// <summary> /// Readonly buffer with shape, strides and format /// </summary> RECORDS_RO = (STRIDES | FORMATS), /// <summary> /// Writable indirect buffer with shape, strides, format and suboffsets (if needed) /// </summary> FULL = (INDIRECT | WRITABLE | FORMATS), /// <summary> /// Readonly indirect buffer with shape, strides, format and suboffsets (if needed) /// </summary> FULL_RO = (INDIRECT | FORMATS), } }