mirror of
https://github.com/Laex/Delphi-OpenCV.git
synced 2024-11-15 07:45:53 +01:00
114 lines
3.7 KiB
ObjectPascal
114 lines
3.7 KiB
ObjectPascal
(*
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****************************************************************
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Delphi-OpenCV Demo
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Copyright (C) 2013 Project Delphi-OpenCV
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****************************************************************
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Contributor:
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Laentir Valetov
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email:laex@bk.ru
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****************************************************************
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You may retrieve the latest version of this file at the GitHub,
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located at git://github.com/Laex/Delphi-OpenCV.git
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****************************************************************
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The contents of this file are used with permission, subject to
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the Mozilla Public License Version 1.1 (the "License"); you may
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not use this file except in compliance with the License. You may
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obtain a copy of the License at
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http://www.mozilla.org/MPL/MPL-1_1Final.html
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Software distributed under the License is distributed on an
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"AS IS" basis, WITHOUT WARRANTY OF ANY KIND, either express or
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implied. See the License for the specific language governing
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rights and limitations under the License.
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****************************************************************
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*)
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unit ocv.fmxutils;
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{$I OpenCV.inc}
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interface
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Uses
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ocv.core.types_c
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{$IFDEF DELPHIXE5_UP}
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, FMX.Graphics
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{$IFEND}
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;
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{$IFDEF DELPHIXE5_UP}
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procedure IPLImageToFMXBitmap(const IpImage: pIplImage; const FMXBitmap: TBitmap;
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const WithROI: Boolean = true); inline;
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{$IFEND}
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implementation
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{$IFDEF DELPHIXE5_UP}
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Uses FMX.Types;
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procedure IPLImageToFMXBitmap(const IpImage: pIplImage; const FMXBitmap: TBitmap; const WithROI: Boolean); inline;
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Var
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BitmapData: TBitmapData;
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i, j, src_index, dst_index: Integer;
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SrcData, DestData: pByte;
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nC: Integer;
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pf: Integer;
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begin
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SrcData := nil;
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Assert(Assigned(IpImage) and Assigned(FMXBitmap));
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if (IpImage^.Width > 0) and (IpImage^.Height > 0) and Assigned(IpImage^.imageData) then
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try
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nC := IpImage^.nChannels;
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With IpImage^ do
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begin
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SrcData := AllocMem(Width * Height * nC);
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Move(imageData^, SrcData^, Width * Height * nC);
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end;
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if WithROI and Assigned(IpImage^.roi) then
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begin
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if (FMXBitmap.Width <> IpImage^.roi^.Width) or (FMXBitmap.Height <> IpImage^.roi^.Height) then
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FMXBitmap.SetSize(IpImage^.roi^.Width, IpImage^.roi^.Height);
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end
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else if (FMXBitmap.Width <> IpImage^.Width) or (FMXBitmap.Height <> IpImage^.Height) then
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FMXBitmap.SetSize(IpImage^.Width, IpImage^.Height);
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if FMXBitmap.Map(TMapAccess.Write, BitmapData) then
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try
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DestData := pByte(BitmapData.Data);
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pf := PixelFormatBytes[FMXBitmap.PixelFormat];
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if WithROI and Assigned(IpImage^.roi) then
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begin
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for j := 0 to BitmapData.Height - 1 do
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for i := 0 to BitmapData.Width - 1 do
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begin
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src_index := ((j + IpImage^.roi^.yOffset) * IpImage^.Width + (i + IpImage^.roi^.xOffset)) * nC;
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dst_index := (j * BitmapData.Width + i) * pf;
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DestData[dst_index + 0] := SrcData[src_index + 0];
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DestData[dst_index + 1] := SrcData[src_index + 1];
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DestData[dst_index + 2] := SrcData[src_index + 2];
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DestData[dst_index + 3] := $FF;
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end;
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end
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else
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for i := 0 to BitmapData.Width * BitmapData.Height - 1 do
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begin
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DestData[i * pf + 0] := SrcData[i * nC + 0];
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DestData[i * pf + 1] := SrcData[i * nC + 1];
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DestData[i * pf + 2] := SrcData[i * nC + 2];
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DestData[i * pf + 3] := $FF;
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end;
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finally
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FMXBitmap.Unmap(BitmapData);
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end;
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finally
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if Assigned(SrcData) then
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FreeMem(SrcData);
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end;
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end;
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{$IFEND}
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end.
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