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<p class=MsoNormal><font size=2 color=blue face=Verdana><span style='font-size:
10.0pt;font-family:Verdana;color:blue'>Hi Tamas,<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 color=blue face=Verdana><span style='font-size:
10.0pt;font-family:Verdana;color:blue'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 color=blue face=Verdana><span style='font-size:
10.0pt;font-family:Verdana;color:blue'>Yes, finally, "vsimem" works
once bitmap is Png (abbreviated VB.NET code follows):<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 color=blue face=Verdana><span style='font-size:
10.0pt;font-family:Verdana;color:blue'><o:p> </o:p></span></font></p>
<p class=MsoNormal style='margin-left:35.4pt;text-autospace:none'><font size=2
color=blue face=Consolas><span style='font-size:9.5pt;font-family:Consolas;
color:blue'> Dim</span></font><font size=2
face=Consolas><span style='font-size:9.5pt;font-family:Consolas'> bmp <font
color=blue><span style='color:blue'>As</span></font> <font color="#2b91af"><span
style='color:#2B91AF'>Bitmap</span></font> = <font color="#2b91af"><span
style='color:#2B91AF'>Bitmap</span></font>.FromFile(<font color="#a31515"><span
style='color:#A31515'>"C:\Input.tif"</span></font>)<o:p></o:p></span></font></p>
<p class=MsoNormal style='text-autospace:none'><font size=2 face=Consolas><span
style='font-size:9.5pt;font-family:Consolas'><o:p> </o:p></span></font></p>
<p class=MsoNormal style='text-autospace:none'><font size=2 face=Consolas><span
style='font-size:9.5pt;font-family:Consolas'>
<font color=blue><span style='color:blue'>Dim</span></font> imageBuffer <font
color=blue><span style='color:blue'>As</span></font> <font color=blue><span
style='color:blue'>Byte</span></font>()<o:p></o:p></span></font></p>
<p class=MsoNormal style='text-autospace:none'><font size=2 face=Consolas><span
style='font-size:9.5pt;font-family:Consolas'>
<font color=blue><span style='color:blue'>Using</span></font> stream <font
color=blue><span style='color:blue'>As</span></font> <font color=blue><span
style='color:blue'>New</span></font> <font color="#2b91af"><span
style='color:#2B91AF'>MemoryStream</span></font>()<o:p></o:p></span></font></p>
<p class=MsoNormal style='text-autospace:none'><font size=2 face=Consolas><span
style='font-size:9.5pt;font-family:Consolas'>
bmp.Save(stream, <font color="#2b91af"><span style='color:#2B91AF'>ImageFormat</span></font>.Png)<o:p></o:p></span></font></p>
<p class=MsoNormal style='text-autospace:none'><font size=2 face=Consolas><span
style='font-size:9.5pt;font-family:Consolas'>
imageBuffer = stream.ToArray()<o:p></o:p></span></font></p>
<p class=MsoNormal style='text-autospace:none'><font size=2 face=Consolas><span
style='font-size:9.5pt;font-family:Consolas'>
<font color=blue><span style='color:blue'>End</span></font> <font color=blue><span
style='color:blue'>Using</span></font><o:p></o:p></span></font></p>
<p class=MsoNormal style='text-autospace:none'><font size=2 face=Consolas><span
style='font-size:9.5pt;font-family:Consolas'><o:p> </o:p></span></font></p>
<p class=MsoNormal style='text-autospace:none'><font size=2 face=Consolas><span
style='font-size:9.5pt;font-family:Consolas'>
<font color=blue><span style='color:blue'>Dim</span></font> pinnedArray <font
color=blue><span style='color:blue'>As</span></font> <font color="#2b91af"><span
style='color:#2B91AF'>GCHandle</span></font> = <font color="#2b91af"><span
style='color:#2B91AF'>GCHandle</span></font>.Alloc(imageBuffer, <font
color="#2b91af"><span style='color:#2B91AF'>GCHandleType</span></font>.Pinned)<o:p></o:p></span></font></p>
<p class=MsoNormal style='text-autospace:none'><font size=2 face=Consolas><span
style='font-size:9.5pt;font-family:Consolas'>
<font color=blue><span style='color:blue'>Dim</span></font> pointer <font
color=blue><span style='color:blue'>As</span></font> <font color="#2b91af"><span
style='color:#2B91AF'>IntPtr</span></font> = pinnedArray.AddrOfPinnedObject()<o:p></o:p></span></font></p>
<p class=MsoNormal style='text-autospace:none'><font size=2 face=Consolas><span
style='font-size:9.5pt;font-family:Consolas'><o:p> </o:p></span></font></p>
<p class=MsoNormal style='text-autospace:none'><font size=2 face=Consolas><span
style='font-size:9.5pt;font-family:Consolas'>
<font color=blue><span style='color:blue'>Dim</span></font> memFilename <font
color=blue><span style='color:blue'>As</span></font> <font color=blue><span
style='color:blue'>String</span></font> = <font color="#a31515"><span
style='color:#A31515'>"/vsimem/data"</span></font><o:p></o:p></span></font></p>
<p class=MsoNormal style='text-autospace:none'><font size=2 face=Consolas><span
style='font-size:9.5pt;font-family:Consolas'>
<font color="#2b91af"><span style='color:#2B91AF'>Gdal</span></font>.FileFromMemBuffer(memFilename,
imageBuffer.Length, pointer)<o:p></o:p></span></font></p>
<p class=MsoNormal style='text-autospace:none'><font size=2 face=Consolas><span
style='font-size:9.5pt;font-family:Consolas'>
<font color=blue><span style='color:blue'>Dim</span></font> ds <font
color=blue><span style='color:blue'>As</span></font> <font color="#2b91af"><span
style='color:#2B91AF'>Dataset</span></font> = <font color="#2b91af"><span
style='color:#2B91AF'>Gdal</span></font>.Open(memFilename, <font color="#2b91af"><span
style='color:#2B91AF'>Access</span></font>.GA_ReadOnly)<o:p></o:p></span></font></p>
<p class=MsoNormal style='text-autospace:none'><font size=2 face=Consolas><span
style='font-size:9.5pt;font-family:Consolas'><o:p> </o:p></span></font></p>
<p class=MsoNormal style='text-autospace:none'><font size=2 face=Consolas><span
style='font-size:9.5pt;font-family:Consolas'>
<font color=blue><span style='color:blue'>Dim</span></font> drv <font
color=blue><span style='color:blue'>As</span></font> <font color="#2b91af"><span
style='color:#2B91AF'>Driver</span></font> = <font color="#2b91af"><span
style='color:#2B91AF'>Gdal</span></font>.GetDriverByName(<font color="#a31515"><span
style='color:#A31515'>"GTiff"</span></font>)<o:p></o:p></span></font></p>
<p class=MsoNormal style='text-autospace:none'><font size=2 face=Consolas><span
style='font-size:9.5pt;font-family:Consolas'>
<font color=blue><span style='color:blue'>Dim</span></font> ds1 =
drv.CreateCopy(<font color="#a31515"><span style='color:#A31515'>"C:\Output.tif"</span></font>,
ds, 0, <font color=blue><span style='color:blue'>Nothing</span></font>, <font
color=blue><span style='color:blue'>Nothing</span></font>, <font color=blue><span
style='color:blue'>Nothing</span></font>)<o:p></o:p></span></font></p>
<p class=MsoNormal style='text-autospace:none'><font size=2 face=Consolas><span
style='font-size:9.5pt;font-family:Consolas'><o:p> </o:p></span></font></p>
<p class=MsoNormal style='text-autospace:none'><font size=2 face=Consolas><span
style='font-size:9.5pt;font-family:Consolas'>
pinnedArray.Free()<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 color=blue face=Verdana><span style='font-size:
10.0pt;font-family:Verdana;color:blue'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 color=blue face=Verdana><span style='font-size:
10.0pt;font-family:Verdana;color:blue'>I've tested it on bitmaps originating
from .bmp, .png, .tif and .jpg.<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 color=blue face=Verdana><span style='font-size:
10.0pt;font-family:Verdana;color:blue'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 color=blue face=Verdana><span style='font-size:
10.0pt;font-family:Verdana;color:blue'>Regards,<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 color=blue face=Verdana><span style='font-size:
10.0pt;font-family:Verdana;color:blue'>Maksim Sestic<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 color=blue face=Verdana><span style='font-size:
10.0pt;font-family:Verdana;color:blue'><o:p> </o:p></span></font></p>
<div>
<div class=MsoNormal align=center style='text-align:center'><font size=3
face="Times New Roman"><span lang=EN-US style='font-size:12.0pt'>
<hr size=2 width="100%" align=center tabindex=-1>
</span></font></div>
<p class=MsoNormal><b><font size=2 face=Tahoma><span lang=EN-US
style='font-size:10.0pt;font-family:Tahoma;font-weight:bold'>From:</span></font></b><font
size=2 face=Tahoma><span lang=EN-US style='font-size:10.0pt;font-family:Tahoma'>
Tamas Szekeres [mailto:szekerest@gmail.com] <br>
<b><span style='font-weight:bold'>Sent:</span></b> Sunday, March 24, 2013 17:25<br>
<b><span style='font-weight:bold'>To:</span></b> Maksim Sestic<br>
<b><span style='font-weight:bold'>Cc:</span></b> gdal-dev<br>
<b><span style='font-weight:bold'>Subject:</span></b> Re: [gdal-dev] Converting
.NET Bitmap to GDAL Dataset</span></font><span lang=EN-US><o:p></o:p></span></p>
</div>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'><o:p> </o:p></span></font></p>
<div>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'>We could also convert the bitmap to png or some other formats that the
GDAL drivers reconise, something like:<o:p></o:p></span></font></p>
</div>
<div>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'><o:p> </o:p></span></font></p>
</div>
<div>
<div>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'> byte[] imageBuffer;<o:p></o:p></span></font></p>
</div>
<div>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'> using (MemoryStream stream = new
MemoryStream())<o:p></o:p></span></font></p>
</div>
<div>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'> {<o:p></o:p></span></font></p>
</div>
<div>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'> bmp.Save(stream,
ImageFormat.Png);<o:p></o:p></span></font></p>
</div>
<div>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'> imageBuffer =
stream.ToArray();<o:p></o:p></span></font></p>
</div>
<div>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'> }<o:p></o:p></span></font></p>
</div>
</div>
<div>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'><o:p> </o:p></span></font></p>
</div>
<div>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'> Gdal.FileFromMemBuffer(memFilename,
imageBuffer);<o:p></o:p></span></font></p>
</div>
<div>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'> Dataset ds = Gdal.Open(memFilename,
Access.GA_ReadOnly);<o:p></o:p></span></font></p>
</div>
<div>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'><o:p> </o:p></span></font></p>
</div>
<div>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'><o:p> </o:p></span></font></p>
</div>
<div>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'>Best regards,<o:p></o:p></span></font></p>
</div>
<div>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'><o:p> </o:p></span></font></p>
</div>
<div>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'>Tamas<o:p></o:p></span></font></p>
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