Actions

Difference between revisions of "Allocation"

From XnView Wiki

(Created page with '== gflAllockBitmap == The gflAllockBitmap function allocates a picture, and return a pointer on a GFL_BITMAP structure. GFL_BITMAP* <b>gflAllockBitmap</b>(  GFL_BITMAP_T…')
 
Line 1: Line 1:
== gflAllockBitmap ==
== gflAllockBitmap ==


The gflAllockBitmap function allocates a picture, and return a pointer on a GFL_BITMAP structure.  
The gflAllockBitmap function allocates a picture, and return a pointer on a [[Strutures|GFL_BITMAP]] structure.  


GFL_BITMAP* <b>gflAllockBitmap</b>(
GFL_BITMAP* <b>gflAllockBitmap</b>(
  &nbsp;GFL_BITMAP_TYPE bitmap_type,   
  &nbsp;GFL_BITMAP_TYPE bitmap_type,   
  &nbsp;GFL_INT32 width,  
  &nbsp;GFL_INT32 width,  
Line 9: Line 9:
  &nbsp;GFL_UINT32 line_padding,  
  &nbsp;GFL_UINT32 line_padding,  
  &nbsp;const GFL_COLOR* color
  &nbsp;const GFL_COLOR* color
);
);


'''Parameters'''
'''Parameters'''


bitmap_type  
:bitmap_type
Type of picture wanted. GFL_BINARY 0x0001 Binary (8 bits)  
::Type of picture wanted.  
GFL_GREY 0x0002 Grey scale (8 bits)  
::{|
GFL_COLORS 0x0004 Colors with colormap (8 bits)  
|GFL_BINARY || 0x0001 || Binary (8 bits)  
GFL_RGB 0x0008 TrueColors - Red/Green/Blue (24 bits)  
|-
GFL_RGBA 0x0010 TrueColors - Red/Green/Blue/Alpha (32 bits)  
|GFL_GREY || 0x0002 || Grey scale (8 bits)  
GFL_BGR 0x0020 TrueColors - Blue/Green/Red (24 bits)  
|-
GFL_ABGR 0x0040 TrueColors - Alpha/Blue/Green/Red (32 bits)  
|GFL_COLORS || 0x0004 || Colors with colormap (8 bits)  
GFL_BGRA 0x0100 TrueColors - Blue/Green/Red/Alpha (32 bits)  
|-
GFL_ARGB 0x0200 TrueColors - Alpha/Red/Green/Blue (32 bits)  
|GFL_RGB || 0x0008 || TrueColors - Red/Green/Blue (24 bits)  
|-
|GFL_RGBA || 0x0010 || TrueColors - Red/Green/Blue/Alpha (32 bits)  
|-
|GFL_BGR || 0x0020 || TrueColors - Blue/Green/Red (24 bits)  
|-
|GFL_ABGR || 0x0040 || TrueColors - Alpha/Blue/Green/Red (32 bits)  
|-
|GFL_BGRA || 0x0100 || TrueColors - Blue/Green/Red/Alpha (32 bits)  
|-
|GFL_ARGB || 0x0200 || TrueColors - Alpha/Red/Green/Blue (32 bits)  
|}
:width
::Width of the picture wanted.
:height
::Height of the picture wanted.
:line_padding
::Pad for a pixel line.
::For a value of 4, each line of pixels have a multiple of 4 bytes (32 bits).
:color
::Pointer to a [[Strutures|GFL_COLOR]] structure used to set the background color.
::Can be NULL, the background color is (0,0,0).


width
'''Return value'''
Width of the picture wanted.
:A pointer to a [[Strutures|GFL_BITMAP]] structure or NULL.
height
Height of the picture wanted.
line_padding
Pad for a pixel line.
For a value of 4, each line of pixels have a multiple of 4 bytes (32 bits).
color
Pointer to a GFL_COLOR structure used to set the background color.
Can be NULL, the background color is (0,0,0).  


Return value
'''See also'''
:[[#gflFreeBitmap|gflFreeBitmap]], [[#gflFreeBitmapData|gflFreeBitmapData]]


A pointer to a GFL_BITMAP structure or NULL.


== gflAllockBitmapEx ==


See also
The gflAllockBitmapEx function allocates a picture, and return a pointer on a [[Strutures|GFL_BITMAP]] structure.


gflFreeBitmap, gflFreeBitmapData
GFL_BITMAP* <b>gflAllockBitmapEx</b>(
&nbsp;GFL_BITMAP_TYPE bitmap_type, 
&nbsp;GFL_INT32 width,
&nbsp;GFL_INT32 height,
&nbsp;GFL_UINT16 bits_per_component,
&nbsp;GFL_UINT32 line_padding,
&nbsp;const GFL_COLOR* color
);
 
'''Parameters'''
 
:bitmap_type
::Type of picture wanted.
::{|
|GFL_BINARY || 0x0001 || Binary (8 bits)
|-
|GFL_GREY || 0x0002 || Grey scale (8 bits)
|-
|GFL_COLORS || 0x0004 || Colors with colormap (8 bits)
|-
|GFL_RGB || 0x0008 || TrueColors - Red/Green/Blue (24 bits)
|-
|GFL_RGBA || 0x0010 || TrueColors - Red/Green/Blue/Alpha (32 bits)
|-
|GFL_BGR || 0x0020 || TrueColors - Blue/Green/Red (24 bits)
|-
|GFL_ABGR || 0x0040 || TrueColors - Alpha/Blue/Green/Red (32 bits)
|-
|GFL_BGRA || 0x0100 || TrueColors - Blue/Green/Red/Alpha (32 bits)
|-
|GFL_ARGB || 0x0200 || TrueColors - Alpha/Red/Green/Blue (32 bits)
|}
:width
::Width of the picture wanted.
:height
::Height of the picture wanted.
:bits_per_component
::Bits per component wanted. Can be 8 or 16.
:line_padding
::Pad for a pixel line.
::For a value of 4, each line of pixels have a multiple of 4 bytes (32 bits).
:color
::Pointer to a [[Strutures|GFL_COLOR]] structure used to set the background color.
::Can be NULL, the background color is (0,0,0).
 
'''Return value'''
:A pointer to a [[Strutures|GFL_BITMAP]] structure or NULL.
 
'''See also'''
:[[#gflFreeBitmap|gflFreeBitmap]], [[#gflFreeBitmapData|gflFreeBitmapData]]
 
 
== gflFreeBitmap ==
 
The gflFreeBitmap function frees a [[Strutures|GFL_BITMAP]] structure, and his content.
 
void gflFreeBitmap(
&nbsp;GFL_BITMAP* bitmap
);
 
'''Parameters'''
 
:bitmap
::Pointer to a [[Strutures|GFL_BITMAP]] structure.
 
'''See also'''
:[[#gflAllockBitmap|gflAllockBitmap]], [[#gflFreeBitmapData|gflFreeBitmapData]]
 
 
== gflFreeBitmapData ==
 
The gflFreeBitmapData function frees the content of a [[Strutures|GFL_BITMAP]] structure.
 
void gflFreeBitmapData(
&nbsp;GFL_BITMAP* bitmap
);
 
'''Parameters'''
 
:bitmap
::Pointer to a [[Strutures|GFL_BITMAP]] structure.
 
'''See also'''
:[[#gflAllockBitmap|gflAllockBitmap]], [[#gflFreeBitmap|gflFreeBitmap]]
 
 
== gflCloneBitmap ==
 
The gflCloneBitmap function allows to clone a bitmap, and returns a pointer to a [[Strutures|GFL_BITMAP]] structure.
 
GFL_BITMAP* gflCloneBitmap(
&nbsp;const GFL_BITMAP* bitmap
);
 
'''Parameters'''
 
:bitmap
::Pointer to a [[Strutures|GFL_BITMAP]] structure.
 
'''Return value'''
:A pointer to a [[Strutures|GFL_BITMAP]] structure or NULL.
 
 
'''See also'''
:[[#gflAllockBitmap|gflAllockBitmap]], [[#gflFreeBitmap|gflFreeBitmap]], [[#gflFreeBitmapData|gflFreeBitmapData]]
 
 
== gflMemoryAlloc ==
 
The gflMemoryAlloc function allocates memory.
 
void* gflMemoryAlloc(
&nbsp;GFL_UINT32 size
);
 
'''Parameters'''
 
:size
::Size wanted.
 
'''Return value'''
:The function returns NULL if an error occurs.
 
 
'''See also'''
:[[#gflMemoryRealloc|gflMemoryRealloc]], [[#gflMemoryFree |gflMemoryFree]]
 
 
== gflMemoryRealloc ==
 
The gflMemoryRealloc function reallocates a memory area.
 
void  gflMemoryRealloc(
&nbsp;void* ptr, 
&nbsp;GFL_UINT32 size
);
 
'''Parameters'''
 
:ptr
::Pointer to a memory area allocated.
:size
::New size.
 
'''Return value'''
:The function returns NULL if an error occurs.
 
'''See also'''
:[[#gflMemoryAlloc|gflMemoryAlloc]], [[#gflMemoryFree |gflMemoryFree]]
 
 
== gflMemoryFree ==
 
The gflMemoryFree function frees memory.
 
void gflMemoryFree(
&nbsp;void* ptr
);
 
'''Parameters'''
 
:ptr
::Pointer to a memory area allocated.
 
'''See also'''
:[[#gflMemoryAlloc|gflMemoryAlloc]], [[#gflMemoryRealloc|gflMemoryRealloc]]

Revision as of 18:45, 22 September 2009

gflAllockBitmap

The gflAllockBitmap function allocates a picture, and return a pointer on a GFL_BITMAP structure. 

GFL_BITMAP* gflAllockBitmap(
 GFL_BITMAP_TYPE bitmap_type,  
 GFL_INT32 width, 
 GFL_INT32 height, 
 GFL_UINT32 line_padding, 
 const GFL_COLOR* color
);

Parameters

bitmap_type
Type of picture wanted.
GFL_BINARY 0x0001 Binary (8 bits)
GFL_GREY 0x0002 Grey scale (8 bits)
GFL_COLORS 0x0004 Colors with colormap (8 bits)
GFL_RGB 0x0008 TrueColors - Red/Green/Blue (24 bits)
GFL_RGBA 0x0010 TrueColors - Red/Green/Blue/Alpha (32 bits)
GFL_BGR 0x0020 TrueColors - Blue/Green/Red (24 bits)
GFL_ABGR 0x0040 TrueColors - Alpha/Blue/Green/Red (32 bits)
GFL_BGRA 0x0100 TrueColors - Blue/Green/Red/Alpha (32 bits)
GFL_ARGB 0x0200 TrueColors - Alpha/Red/Green/Blue (32 bits)
width
Width of the picture wanted.
height
Height of the picture wanted.
line_padding
Pad for a pixel line.
For a value of 4, each line of pixels have a multiple of 4 bytes (32 bits).
color
Pointer to a GFL_COLOR structure used to set the background color.
Can be NULL, the background color is (0,0,0).

Return value

A pointer to a GFL_BITMAP structure or NULL.

See also

gflFreeBitmap, gflFreeBitmapData


gflAllockBitmapEx

The gflAllockBitmapEx function allocates a picture, and return a pointer on a GFL_BITMAP structure. 

GFL_BITMAP* gflAllockBitmapEx(
 GFL_BITMAP_TYPE bitmap_type,  
 GFL_INT32 width, 
 GFL_INT32 height, 
 GFL_UINT16 bits_per_component, 
 GFL_UINT32 line_padding, 
 const GFL_COLOR* color
);

Parameters

bitmap_type
Type of picture wanted.
GFL_BINARY 0x0001 Binary (8 bits)
GFL_GREY 0x0002 Grey scale (8 bits)
GFL_COLORS 0x0004 Colors with colormap (8 bits)
GFL_RGB 0x0008 TrueColors - Red/Green/Blue (24 bits)
GFL_RGBA 0x0010 TrueColors - Red/Green/Blue/Alpha (32 bits)
GFL_BGR 0x0020 TrueColors - Blue/Green/Red (24 bits)
GFL_ABGR 0x0040 TrueColors - Alpha/Blue/Green/Red (32 bits)
GFL_BGRA 0x0100 TrueColors - Blue/Green/Red/Alpha (32 bits)
GFL_ARGB 0x0200 TrueColors - Alpha/Red/Green/Blue (32 bits)
width
Width of the picture wanted.
height
Height of the picture wanted.
bits_per_component
Bits per component wanted. Can be 8 or 16.
line_padding
Pad for a pixel line.
For a value of 4, each line of pixels have a multiple of 4 bytes (32 bits).
color
Pointer to a GFL_COLOR structure used to set the background color.
Can be NULL, the background color is (0,0,0).

Return value

A pointer to a GFL_BITMAP structure or NULL.

See also

gflFreeBitmap, gflFreeBitmapData


gflFreeBitmap

The gflFreeBitmap function frees a GFL_BITMAP structure, and his content. 

void gflFreeBitmap(
 GFL_BITMAP* bitmap
);

Parameters

bitmap
Pointer to a GFL_BITMAP structure.

See also

gflAllockBitmap, gflFreeBitmapData


gflFreeBitmapData

The gflFreeBitmapData function frees the content of a GFL_BITMAP structure. 

void gflFreeBitmapData(
 GFL_BITMAP* bitmap
);

Parameters

bitmap
Pointer to a GFL_BITMAP structure.

See also

gflAllockBitmap, gflFreeBitmap


gflCloneBitmap

The gflCloneBitmap function allows to clone a bitmap, and returns a pointer to a GFL_BITMAP structure. 

GFL_BITMAP* gflCloneBitmap(
 const GFL_BITMAP* bitmap
);

Parameters

bitmap
Pointer to a GFL_BITMAP structure.

Return value

A pointer to a GFL_BITMAP structure or NULL.


See also

gflAllockBitmap, gflFreeBitmap, gflFreeBitmapData


gflMemoryAlloc

The gflMemoryAlloc function allocates memory. 

void* gflMemoryAlloc(
 GFL_UINT32 size
);

Parameters

size
Size wanted.

Return value

The function returns NULL if an error occurs.


See also

gflMemoryRealloc, gflMemoryFree


gflMemoryRealloc

The gflMemoryRealloc function reallocates a memory area. 

void  gflMemoryRealloc(
 void* ptr,  
 GFL_UINT32 size
);

Parameters

ptr
Pointer to a memory area allocated.
size
New size.

Return value

The function returns NULL if an error occurs.

See also

gflMemoryAlloc, gflMemoryFree


gflMemoryFree

The gflMemoryFree function frees memory. 

void gflMemoryFree(
 void* ptr
);

Parameters

ptr
Pointer to a memory area allocated.

See also

gflMemoryAlloc, gflMemoryRealloc
Retrieved from "https://www.xnview.com/wiki/index.php?title=Allocation&oldid=129"