Function 36. See sysfuncr.txt and sysfuncs.txt

git-svn-id: svn://kolibrios.org@921 a494cfbc-eb01-0410-851d-a64ba20cac60

kernel/trunk/core/syscall.inc

@@ -219,7 +219,7 @@ iglobal
       dd undefined_syscall	 ; 33-reserved
       dd undefined_syscall	 ; 34-reserved
       dd syscall_getpixel	 ; 35-GetPixel
-      dd undefined_syscall	 ; 36-reserved
+      dd syscall_getarea   ; 36-GetArea
       dd cross_order		 ; 37-GetMousePosition_ScreenRelative,.
       dd syscall_drawline	 ; 38-DrawLine
       dd cross_order		 ; 39-GetBackgroundSize,ReadBgrData,.

kernel/trunk/docs/sysfuncr.txt

@@ -1728,6 +1728,22 @@ dd 638
     ä㭪権) ç¥à¥§ ᥫ¥ªâ®à gs. <20> à ¬¥âàë ⥪ã饣® ¢¨¤¥®à¥¦¨¬ 
     ¬®¦­® ¯®«ãç¨âì ä㭪樥© 61.
 
+======================================================================
+=============== ”ã­ªæ¨ï 36 - ¯à®ç¨â âì ®¡« áâì íªà ­ . ==============
+======================================================================
+<EFBFBD> à ¬¥âàë:
+  * eax = 36 - ­®¬¥à ä㭪樨
+  * ebx = 㪠§ â¥«ì ­  ¯à¥¤¢ à¨â¥«ì­® ¢ë¤¥«¥­­ãî ®¡« áâì ¯ ¬ïâ¨,
+             ªã¤  ¡ã¤¥â ¯®¬¥é¥­® ¨§®¡à ¦¥­¨¥ ¢ ä®à¬ â¥ BBGGRRBBGGRR...
+  * ecx = [à §¬¥à ¯® ®á¨ x]*65536 + [à §¬¥à ¯® ®á¨ y]
+  * edx = [ª®®à¤¨­ â  ¯® ®á¨ x]*65536 + [ª®®à¤¨­ â  ¯® ®á¨ y]
+‚®§¢à é ¥¬®¥ §­ ç¥­¨¥:
+  * äã­ªæ¨ï ­¥ ¢®§¢à é ¥â §­ ç¥­¨ï
+‡ ¬¥ç ­¨ï:
+  * Š®®à¤¨­ âë ¨§®¡à ¦¥­¨ï - íâ® ª®®à¤¨­ âë ¢¥àå­¥£® «¥¢®£® 㣫 
+    ¨§®¡à ¦¥­¨ï ®â­®á¨â¥«ì­® ®ª­ .
+  * <20> §¬¥à ¨§®¡à ¦¥­¨ï ¢ ¡ ©â å ¥áâì 3*xsize*ysize.
+
 ======================================================================
 ==================== ”ã­ªæ¨ï 37 - à ¡®â  á ¬ëèìî. ====================
 ======================================================================

kernel/trunk/docs/sysfuncs.txt

@@ -1706,6 +1706,22 @@ Remarks:
     to videomemory through the selector gs. To get parameters of
     the current videomode, use function 61.
 
+======================================================================
+=============== Function 36 - read screen area. ===============
+======================================================================
+Paramters:
+  * eax = 36 - function number
+  * ebx = pointer on the previously allocated area of memory,
+             where will be placed the image in the format BBGGRRBBGGRR...
+  * ecx = [size on axis x]*65536 + [size on axis y]
+  * edx = [coordinate on axis x]*65536 + [coordinate on axis y]
+Returned value:
+  * function does not return value
+Remarks:
+  * Coordinates of the image are coordinates of the upper left corner
+    of the image relative to the window.
+  * Size of the image in bytes is 3*xsize*ysize.
+
 ======================================================================
 =================== Function 37 - work with mouse. ===================
 ======================================================================

kernel/trunk/kernel.asm

@@ -5087,6 +5087,60 @@ syscall_getpixel:			; GetPixel
      mov   [esp + 32], ecx
      ret
 
+align 4
+
+syscall_getarea:
+;eax = 36
+;ebx = pointer to bufer for img BBGGRRBBGGRR... 
+;ecx = [size x]*65536 + [size y] 
+;edx = [start x]*65536 + [start y] 
+     pushad
+     mov   edi,ebx
+     mov   eax,edx
+     shr   eax,16
+     mov   ebx,edx
+     and   ebx,0xffff
+     ; eax - x, ebx - y
+     mov   edx,ecx
+     
+     shr   ecx,16
+     and   edx,0xffff
+     mov   esi,ecx
+     ; ecx - size x, edx - size y
+.start_y:
+     push  ecx
+.start_x:
+     push  eax ebx ecx edx  esi edi
+     add   eax,ecx
+     add   ebx,edx
+     call  dword [GETPIXEL] ; eax - x, ebx - y
+     pop   edi esi
+     
+     mov   eax,ecx
+     pop   edx  ecx
+     
+     push  ecx  edx
+
+     dec   edx
+     lea   edx,[edx*3]
+     imul  edx,esi
+     dec   ecx
+     lea   ecx,[ecx*3]
+     add   edx,ecx
+     add   edx,edi
+     mov   [edx],ax
+     shr   eax,16
+     mov   [edx+2],al
+
+     pop   edx ecx ebx eax 
+     
+     dec   ecx
+     jnz   .start_x
+     pop   ecx
+     dec   edx
+     jnz   .start_y
+     popad
+     ret
 
 align 4