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GdipBitmapGetHistogram

関数

ビットマップの各チャンネルのヒストグラムデータを取得する。

DLLgdiplus.dll呼出規約winapi

シグネチャ

// gdiplus.dll
#include <windows.h>

Status GdipBitmapGetHistogram(
    GpBitmap* bitmap,
    HistogramFormat format,
    DWORD NumberOfEntries,
    DWORD* channel0,
    DWORD* channel1,
    DWORD* channel2,
    DWORD* channel3
);

パラメーター

名前	型	方向
bitmap	GpBitmap*	inout
format	HistogramFormat	in
NumberOfEntries	DWORD	in
channel0	DWORD*	out
channel1	DWORD*	out
channel2	DWORD*	out
channel3	DWORD*	out

戻り値の型: Status

各言語での呼び出し定義

// gdiplus.dll
#include <windows.h>

Status GdipBitmapGetHistogram(
    GpBitmap* bitmap,
    HistogramFormat format,
    DWORD NumberOfEntries,
    DWORD* channel0,
    DWORD* channel1,
    DWORD* channel2,
    DWORD* channel3
);

[DllImport("gdiplus.dll", ExactSpelling = true)]
static extern int GdipBitmapGetHistogram(
    IntPtr bitmap,   // GpBitmap* in/out
    int format,   // HistogramFormat
    uint NumberOfEntries,   // DWORD
    out uint channel0,   // DWORD* out
    out uint channel1,   // DWORD* out
    out uint channel2,   // DWORD* out
    out uint channel3   // DWORD* out
);

<DllImport("gdiplus.dll", ExactSpelling:=True)>
Public Shared Function GdipBitmapGetHistogram(
    bitmap As IntPtr,   ' GpBitmap* in/out
    format As Integer,   ' HistogramFormat
    NumberOfEntries As UInteger,   ' DWORD
    <Out> ByRef channel0 As UInteger,   ' DWORD* out
    <Out> ByRef channel1 As UInteger,   ' DWORD* out
    <Out> ByRef channel2 As UInteger,   ' DWORD* out
    <Out> ByRef channel3 As UInteger   ' DWORD* out
) As Integer
End Function

' bitmap : GpBitmap* in/out
' format : HistogramFormat
' NumberOfEntries : DWORD
' channel0 : DWORD* out
' channel1 : DWORD* out
' channel2 : DWORD* out
' channel3 : DWORD* out
Declare PtrSafe Function GdipBitmapGetHistogram Lib "gdiplus" ( _
    ByVal bitmap As LongPtr, _
    ByVal format As Long, _
    ByVal NumberOfEntries As Long, _
    ByRef channel0 As Long, _
    ByRef channel1 As Long, _
    ByRef channel2 As Long, _
    ByRef channel3 As Long) As Long
' VBA7前提(PtrSafe)。32bit Office では LongPtr→Long。Integer=16bit / Long=32bit / LongLong=64bit。

import ctypes
from ctypes import wintypes

GdipBitmapGetHistogram = ctypes.windll.gdiplus.GdipBitmapGetHistogram
GdipBitmapGetHistogram.restype = ctypes.c_int
GdipBitmapGetHistogram.argtypes = [
    ctypes.c_void_p,  # bitmap : GpBitmap* in/out
    ctypes.c_int,  # format : HistogramFormat
    wintypes.DWORD,  # NumberOfEntries : DWORD
    ctypes.POINTER(wintypes.DWORD),  # channel0 : DWORD* out
    ctypes.POINTER(wintypes.DWORD),  # channel1 : DWORD* out
    ctypes.POINTER(wintypes.DWORD),  # channel2 : DWORD* out
    ctypes.POINTER(wintypes.DWORD),  # channel3 : DWORD* out
]

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('gdiplus.dll')
GdipBitmapGetHistogram = Fiddle::Function.new(
  lib['GdipBitmapGetHistogram'],
  [
    Fiddle::TYPE_VOIDP,  # bitmap : GpBitmap* in/out
    Fiddle::TYPE_INT,  # format : HistogramFormat
    -Fiddle::TYPE_INT,  # NumberOfEntries : DWORD
    Fiddle::TYPE_VOIDP,  # channel0 : DWORD* out
    Fiddle::TYPE_VOIDP,  # channel1 : DWORD* out
    Fiddle::TYPE_VOIDP,  # channel2 : DWORD* out
    Fiddle::TYPE_VOIDP,  # channel3 : DWORD* out
  ],
  Fiddle::TYPE_INT)

#[link(name = "gdiplus")]
extern "system" {
    fn GdipBitmapGetHistogram(
        bitmap: *mut GpBitmap,  // GpBitmap* in/out
        format: i32,  // HistogramFormat
        NumberOfEntries: u32,  // DWORD
        channel0: *mut u32,  // DWORD* out
        channel1: *mut u32,  // DWORD* out
        channel2: *mut u32,  // DWORD* out
        channel3: *mut u32  // DWORD* out
    ) -> i32;
}
// crates: windows-sys provides ready-made bindings for this API.

$sig = @"
[DllImport("gdiplus.dll")]
public static extern int GdipBitmapGetHistogram(IntPtr bitmap, int format, uint NumberOfEntries, out uint channel0, out uint channel1, out uint channel2, out uint channel3);
"@
$api = Add-Type -MemberDefinition $sig -Name 'gdiplus_GdipBitmapGetHistogram' -Namespace Win32 -PassThru
# $api::GdipBitmapGetHistogram(bitmap, format, NumberOfEntries, channel0, channel1, channel2, channel3)

#uselib "gdiplus.dll"
#func global GdipBitmapGetHistogram "GdipBitmapGetHistogram" sptr, sptr, sptr, sptr, sptr, sptr, sptr
; GdipBitmapGetHistogram varptr(bitmap), format, NumberOfEntries, varptr(channel0), varptr(channel1), varptr(channel2), varptr(channel3)   ; 戻り値は stat
; bitmap : GpBitmap* in/out -> "sptr"
; format : HistogramFormat -> "sptr"
; NumberOfEntries : DWORD -> "sptr"
; channel0 : DWORD* out -> "sptr"
; channel1 : DWORD* out -> "sptr"
; channel2 : DWORD* out -> "sptr"
; channel3 : DWORD* out -> "sptr"
; ※HSP3.7は #func のため戻り値はシステム変数 stat に格納されます。

出力引数:

#uselib "gdiplus.dll"
#cfunc global GdipBitmapGetHistogram "GdipBitmapGetHistogram" var, int, int, var, var, var, var
; res = GdipBitmapGetHistogram(bitmap, format, NumberOfEntries, channel0, channel1, channel2, channel3)
; bitmap : GpBitmap* in/out -> "var"
; format : HistogramFormat -> "int"
; NumberOfEntries : DWORD -> "int"
; channel0 : DWORD* out -> "var"
; channel1 : DWORD* out -> "var"
; channel2 : DWORD* out -> "var"
; channel3 : DWORD* out -> "var"
; ※出力/バッファ引数は var 方式(変数を直接渡す)。varptr 方式にも切替可。#uselib "gdiplus.dll"
#cfunc global GdipBitmapGetHistogram "GdipBitmapGetHistogram" sptr, int, int, sptr, sptr, sptr, sptr
; res = GdipBitmapGetHistogram(varptr(bitmap), format, NumberOfEntries, varptr(channel0), varptr(channel1), varptr(channel2), varptr(channel3))
; bitmap : GpBitmap* in/out -> "sptr"
; format : HistogramFormat -> "int"
; NumberOfEntries : DWORD -> "int"
; channel0 : DWORD* out -> "sptr"
; channel1 : DWORD* out -> "sptr"
; channel2 : DWORD* out -> "sptr"
; channel3 : DWORD* out -> "sptr"
; ※出力/バッファ引数はポインタ方式(token=sptr / 呼び出しは varptr(変数))。

出力引数:

; Status GdipBitmapGetHistogram(GpBitmap* bitmap, HistogramFormat format, DWORD NumberOfEntries, DWORD* channel0, DWORD* channel1, DWORD* channel2, DWORD* channel3)
#uselib "gdiplus.dll"
#cfunc global GdipBitmapGetHistogram "GdipBitmapGetHistogram" var, int, int, var, var, var, var
; res = GdipBitmapGetHistogram(bitmap, format, NumberOfEntries, channel0, channel1, channel2, channel3)
; bitmap : GpBitmap* in/out -> "var"
; format : HistogramFormat -> "int"
; NumberOfEntries : DWORD -> "int"
; channel0 : DWORD* out -> "var"
; channel1 : DWORD* out -> "var"
; channel2 : DWORD* out -> "var"
; channel3 : DWORD* out -> "var"
; ※出力/バッファ引数は var 方式(変数を直接渡す)。varptr 方式にも切替可。; Status GdipBitmapGetHistogram(GpBitmap* bitmap, HistogramFormat format, DWORD NumberOfEntries, DWORD* channel0, DWORD* channel1, DWORD* channel2, DWORD* channel3)
#uselib "gdiplus.dll"
#cfunc global GdipBitmapGetHistogram "GdipBitmapGetHistogram" intptr, int, int, intptr, intptr, intptr, intptr
; res = GdipBitmapGetHistogram(varptr(bitmap), format, NumberOfEntries, varptr(channel0), varptr(channel1), varptr(channel2), varptr(channel3))
; bitmap : GpBitmap* in/out -> "intptr"
; format : HistogramFormat -> "int"
; NumberOfEntries : DWORD -> "int"
; channel0 : DWORD* out -> "intptr"
; channel1 : DWORD* out -> "intptr"
; channel2 : DWORD* out -> "intptr"
; channel3 : DWORD* out -> "intptr"
; ※出力/バッファ引数はポインタ方式(token=intptr / 呼び出しは varptr(変数))。

import (
	"golang.org/x/sys/windows"
	"unsafe"
)

var (
	gdiplus = windows.NewLazySystemDLL("gdiplus.dll")
	procGdipBitmapGetHistogram = gdiplus.NewProc("GdipBitmapGetHistogram")
)

// bitmap (GpBitmap* in/out), format (HistogramFormat), NumberOfEntries (DWORD), channel0 (DWORD* out), channel1 (DWORD* out), channel2 (DWORD* out), channel3 (DWORD* out)
r1, _, err := procGdipBitmapGetHistogram.Call(
	uintptr(bitmap),
	uintptr(format),
	uintptr(NumberOfEntries),
	uintptr(channel0),
	uintptr(channel1),
	uintptr(channel2),
	uintptr(channel3),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // Status

function GdipBitmapGetHistogram(
  bitmap: Pointer;   // GpBitmap* in/out
  format: Integer;   // HistogramFormat
  NumberOfEntries: DWORD;   // DWORD
  channel0: Pointer;   // DWORD* out
  channel1: Pointer;   // DWORD* out
  channel2: Pointer;   // DWORD* out
  channel3: Pointer   // DWORD* out
): Integer; stdcall;
  external 'gdiplus.dll' name 'GdipBitmapGetHistogram';

result := DllCall("gdiplus\GdipBitmapGetHistogram"
    , "Ptr", bitmap   ; GpBitmap* in/out
    , "Int", format   ; HistogramFormat
    , "UInt", NumberOfEntries   ; DWORD
    , "Ptr", channel0   ; DWORD* out
    , "Ptr", channel1   ; DWORD* out
    , "Ptr", channel2   ; DWORD* out
    , "Ptr", channel3   ; DWORD* out
    , "Int")   ; return: Status

●GdipBitmapGetHistogram(bitmap, format, NumberOfEntries, channel0, channel1, channel2, channel3) = DLL("gdiplus.dll", "int GdipBitmapGetHistogram(void*, int, dword, void*, void*, void*, void*)")
# 呼び出し: GdipBitmapGetHistogram(bitmap, format, NumberOfEntries, channel0, channel1, channel2, channel3)
# bitmap : GpBitmap* in/out -> "void*"
# format : HistogramFormat -> "int"
# NumberOfEntries : DWORD -> "dword"
# channel0 : DWORD* out -> "void*"
# channel1 : DWORD* out -> "void*"
# channel2 : DWORD* out -> "void*"
# channel3 : DWORD* out -> "void*"
# なでしこ1は32bit・ANSI(Shift_JIS)。文字列=char*(ANSI)、ポインタ/ハンドル=void*(4byte)。