L_AgingBitmap

#include "l_bitmap.h"

L_LTIMGSFX_API L_INT L_AgingBitmap (pBitmap, uHScratchCount, uVScratchCount, uMaxScratchLen, uDustDensity, uPitsDensity, uMaxPitSize, crScratch, crDust, crPits, uFlags)

Adds effects that simulate random color changes, scratches, dust and pits, making a bitmap look like it was made from an old film.

Parameters

pBITMAPHANDLE pBitmap

Pointer to the bitmap handle referencing the bitmap to be changed.

L_UINT uHScratchCount

Number of horizontal scratch lines.

L_UINT uVScratchCount

Number of vertical scratch lines.

L_UINT uMaxScratchLen

Maximum scratch line length, in pixels. Its minimum value is 2.

L_UINT uDustDensity

Dust density, expressed in tenths of percent of the bitmap area. Valid values range between 0 and 1000. This value is divided internally by 10. If uDustDen = 1000 then dust density = 100% (that is, the number of dust points = the entire bitmap area.)

L_UINT uPitsDensity

Density of the pits, expressed in tenths of percent of the bitmap area. Valid values range between 0 and 1000. This value is divided internally by 10. If uPitsDen = 1000 then the density of the pits = 100% (that is, the number of pits = the entire bitmap area.)

L_UINT uMaxPitSize

Maximum pit size, in pixels. The size of the pits will be selected at random between 1 and uMaxPitSize.

COLORREF crScratch

A COLORREF value representing the color of the scratch lines.

COLORREF crDust

A COLORREF value representing the color of the dust.

COLORREF crPits

A COLORREF value representing the color of the pits.

L_UINT uFlags

Flags that indicate the distortion type and the distortion color. You can use a bitwise OR (|) to specify one or more flags from each group.

The following flags indicate the distortion type:

Value	Meaning
AGING_ADD_NOTHING	[0x0000] Do not add any distortion type. In this case, the bitmap will be changed by random changes in the color intensity.
AGING_ADD_VSCRATCH	[0x0001] Add vertical scratch lines.
AGING_ADD_HSCRATCH	[0x0002] Add horizontal scratch lines.
AGING_ADD_DUST	[0x0004] Add dust.
AGING_ADD_PITS	[0x0008] Add pits.

The following flags indicate the distortion color:

Value	Meaning
AGING_SCRATCH_INV	[0x0000] Use pixels color inverse as scratch line color. If this flag is set, `crScratch` will be ignored.
AGING_SCRATCH_CLR	[0x0010] Use the crScratch as scratch line color.
AGING_DUST_INV	[0x0000] Use pixels color inverse as dust color. If this flag is set, `crDust` will be ignored.
AGING_DUST_CLR	[0x0020] Use the crDust as dust color.
AGING_PITS_INV	[0x0000] Use pixels color inverse as the color of the pits. If this flag is set, `crPits` will be ignored.
AGING_PITS_CLR	[0x0040] Use the crPits as the color of the pits.

Returns

Value	Meaning
SUCCESS	The function was successful.
< 1	An error occurred. Refer to Return Codes.

Comments

This function does not support signed data images. It returns the error code ERROR_SIGNED_DATA_NOT_SUPPORTED if a signed data image is passed to this function.

To update a status bar or detect a user interrupt during execution of this function, refer to L_SetStatusCallback.

This function supports 12 and 16-bit grayscale and 48 and 64-bit color images. Support for 12 and 16-bit grayscale and 48 and 64-bit color images is available in the Document and Medical Imaging toolkits.

The width of the scratches is 1 pixel. The length of the scratches is random (between 2 and uMaxScratchLen).

The size of dust particles is 1 pixel (1x1).

The size and shape of pits is selected at random. The pit shapes are random and will be between 1x1 and uMaxPitSize x uMaxPitSize.

The function will also make random changes to the pixels intensities.

This function does not support 32-bit grayscale images. It returns the error code ERROR_GRAY32_UNSUPPORTED if a 32-bit grayscale image is passed to this function.

Required DLLs and Libraries

LTIMGSFX
For a listing of the exact DLLs and Libraries needed, based on the toolkit version, refer to Files To Be Included With Your Application.

Platforms

Win32, x64.

Functions

Topics

Example

This example loads a bitmap and applies the aging effect.

L_INT AgingBitmapExample(L_VOID) 
{ 
   L_INT nRet; 
   BITMAPHANDLE LeadBitmap;   /* Bitmap handle to hold the loaded image. */ 
   /* Load the bitmap, keeping the bits per pixel of the file */ 
   nRet = L_LoadBitmap (MAKE_IMAGE_PATH(TEXT("IMAGE1.CMP")), &LeadBitmap, sizeof(BITMAPHANDLE), 0, ORDER_BGR, NULL, NULL);  
   if(nRet !=SUCCESS) 
      return nRet; 
   /* apply aging effect */ 
   nRet = L_AgingBitmap (&LeadBitmap, 10, 2, 50,2,5,6, RGB(255,255,0), RGB(0,0,0), RGB(0,0,255), AGING_ADD_VSCRATCH | AGING_ADD_PITS | AGING_SCRATCH_INV | AGING_PITS_CLR); 
   if(nRet !=SUCCESS) 
      return nRet; 
   nRet = L_SaveBitmap(MAKE_IMAGE_PATH(TEXT("Result.BMP")), &LeadBitmap, FILE_BMP, 24, 0, NULL); 
   if(nRet !=SUCCESS) 
      return nRet; 
   //free bitmap  
   if(LeadBitmap.Flags.Allocated)   
      L_FreeBitmap(&LeadBitmap);   
   return SUCCESS; 
}

Download our FREE evaluation

Help Version 21.0.2023.2.15

LEADTOOLS Raster Imaging C API Help

Introduction

Version History

Getting Started

Files To Be Included With Your Application

Document Writers – Files To Be Included With Your Application

LEADTOOLS Raster Imaging Features