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freetype2
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Code Issues 4 Releases Wiki Activity

* src/base/ftbitmap.c (FT_Bitmap_Copy): Recreate target. 

There is no need to preserve bits before overwriting them.
Therefore, free-malloc could be faster than realloc.
This commit is contained in:
Alexei Podtelezhnikov 2022-09-21 14:44:23 +00:00
parent baae1a2775
commit 82c5ecfee1
1 changed files with 14 additions and 37 deletions
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51
src/base/ftbitmap.c
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@ -66,9 +66,7 @@
{
FT_Memory memory;
FT_Error error = FT_Err_Ok;
FT_Int pitch;
FT_ULong size;
FT_Int pitch;
FT_Int source_pitch_sign, target_pitch_sign;
@ -85,49 +83,28 @@
source_pitch_sign = source->pitch < 0 ? -1 : 1;
target_pitch_sign = target->pitch < 0 ? -1 : 1;
if ( !source->buffer )
{
*target = *source;
if ( source_pitch_sign != target_pitch_sign )
target->pitch = -target->pitch;
return FT_Err_Ok;
}
memory = library->memory;
pitch = source->pitch;
FT_FREE( target->buffer );
*target = *source;
if ( source_pitch_sign != target_pitch_sign )
target->pitch = -target->pitch;
if ( !source->buffer )
return FT_Err_Ok;
pitch = source->pitch;
if ( pitch < 0 )
pitch = -pitch;
size = (FT_ULong)pitch * source->rows;
if ( target->buffer )
{
FT_Int target_pitch = target->pitch;
FT_ULong target_size;
if ( target_pitch < 0 )
target_pitch = -target_pitch;
target_size = (FT_ULong)target_pitch * target->rows;
if ( target_size != size )
FT_MEM_QREALLOC( target->buffer, target_size, size );
}
else
FT_MEM_QALLOC( target->buffer, size );
FT_MEM_QALLOC_MULT( target->buffer, target->rows, pitch );
if ( !error )
{
unsigned char *p;
p = target->buffer;
*target = *source;
target->buffer = p;
if ( source_pitch_sign == target_pitch_sign )
FT_MEM_COPY( target->buffer, source->buffer, size );
FT_MEM_COPY( target->buffer, source->buffer,
(FT_Long)source->rows * pitch );
else
{
/* take care of bitmap flow */