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[sdf] Added functions to de-allocate `SDF_' structs.

This commit is contained in:
Anuj Verma 2020-06-26 09:23:49 +05:30 committed by anujverma
parent 54ff90398a
commit 2f0d349d8c
3 changed files with 109 additions and 35 deletions
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12
[GSoC]ChangeLog
View File

@ -1,3 +1,15 @@
2020-06-26 Anuj Verma <anujv@iitbhilai.ac.in>
[sdf] Added functions to de-allocate `SDF_' structs.
* src/sdf/ftsdf.c (SDF_Contour, SDF_Shape): Use `FT_ListRec'
instead of `FT_List' to avoid a few extra allocations.
* src/sdf/ftsdf.c (SDF_Edge, SDF_Contour, SDF_Shape): Added
functions to de-allocate these structs and there members.
* src/sdf/ftsdfrenc.c: Typo.
2020-06-25 Anuj Verma <anujv@iitbhilai.ac.in>
[sdf] Decompose outline and store it in a temporary

126
src/sdf/ftsdf.c
View File

@ -54,7 +54,7 @@
typedef struct SDF_Contour_
{
FT_26D6_Vec last_pos; /* end position of the last edge */
FT_List edges; /* list of all edges in the contour */
FT_ListRec edges; /* list of all edges in the contour */
} SDF_Contour;
@ -62,8 +62,8 @@
/* glyph outline. */
typedef struct SDF_Shape_
{
FT_Memory memory; /* used internally to allocate memory */
FT_List contours; /* list of all contours in the outline */
FT_Memory memory; /* used internally to allocate memory */
FT_ListRec contours; /* list of all contours in the outline */
} SDF_Shape;
@ -82,14 +82,10 @@
SDF_EDGE_UNDEFINED };
static
const SDF_Contour null_contour = { { 0, 0 }, NULL };
const SDF_Contour null_contour = { { 0, 0 }, { NULL, NULL } };
static
const SDF_Shape null_shape = { NULL, NULL };
static
const FT_ListRec empty_list = { NULL, NULL };
const SDF_Shape null_shape = { NULL, { NULL, NULL } };
/* Creates a new `SDF_Edge' on the heap and assigns the `edge' */
/* pointer to the newly allocated memory. */
@ -118,6 +114,29 @@
return error;
}
/* Frees the allocated `edge' variable. */
static void
sdf_edge_done( FT_Memory memory,
SDF_Edge** edge )
{
if ( !memory || !edge || !*edge )
return;
FT_FREE( *edge );
}
/* Used in `FT_List_Finalize' */
static void
sdf_edge_destructor( FT_Memory memory,
void* data,
void* user )
{
SDF_Edge* edge = (SDF_Edge*)data;
sdf_edge_done( memory, &edge );
}
/* Creates a new `SDF_Contour' on the heap and assigns the `contour' */
/* pointer to the newly allocated memory. Note that the function also */
/* allocate the `contour.edges' list variable and sets to empty list. */
@ -139,22 +158,45 @@
if ( error == FT_Err_Ok )
{
*ptr = null_contour;
FT_QNEW( ptr->edges );
if ( error == FT_Err_Ok )
{
*ptr->edges = empty_list;
*contour = ptr;
}
*contour = ptr;
}
Exit:
return error;
}
/* Frees the allocated `contour' variable and also frees */
/* the list of edges. */
static void
sdf_contour_done( FT_Memory memory,
SDF_Contour** contour )
{
if ( !memory || !contour || !*contour )
return;
/* */
FT_List_Finalize( &(*contour)->edges, sdf_edge_destructor,
memory, NULL );
FT_FREE( *contour );
}
/* Used in `FT_List_Finalize' */
static void
sdf_contour_destructor( FT_Memory memory,
void* data,
void* user )
{
SDF_Contour* contour = (SDF_Contour*)data;
sdf_contour_done( memory, &contour );
}
/* Creates a new `SDF_Shape' on the heap and assigns the `shape' */
/* pointer to the newly allocated memory. Note that the function also */
/* allocate the `shape.contours' list variable and sets to empty list. */
static void
static FT_Error
sdf_shape_new( FT_Memory memory,
SDF_Shape** shape )
{
@ -172,20 +214,31 @@
if ( error == FT_Err_Ok )
{
*ptr = null_shape;
FT_QNEW( ptr->contours );
if ( error == FT_Err_Ok )
{
*ptr->contours = empty_list;
ptr->memory = memory;
*shape = ptr;
}
ptr->memory = memory;
*shape = ptr;
}
Exit:
return error;
}
/* Frees the allocated `shape' variable and also frees */
/* the list of contours. */
static void
sdf_shape_done( FT_Memory memory,
SDF_Shape** shape )
{
if ( !memory || !shape || !*shape )
return;
/* release the list of contours */
FT_List_Finalize( &(*shape)->contours, sdf_contour_destructor,
memory, NULL );
/* release the allocated shape struct */
FT_FREE( *shape );
}
/**************************************************************************
*
@ -224,7 +277,7 @@
contour->last_pos = *to;
node->data = contour;
FT_List_Add( shape->contours, node );
FT_List_Add( &shape->contours, node );
Exit:
return error;
@ -249,7 +302,7 @@
goto Exit;
}
contour = ( SDF_Contour* )shape->contours->tail->data;
contour = ( SDF_Contour* )shape->contours.tail->data;
if ( contour->last_pos.x == to->x &&
contour->last_pos.y == to->y )
@ -270,7 +323,7 @@
contour->last_pos = *to;
node->data = edge;
FT_List_Add( contour->edges, node );
FT_List_Add( &contour->edges, node );
Exit:
return error;
@ -296,7 +349,7 @@
goto Exit;
}
contour = ( SDF_Contour* )shape->contours->tail->data;
contour = ( SDF_Contour* )shape->contours.tail->data;
error = sdf_edge_new( memory, &edge );
if ( error != FT_Err_Ok )
@ -314,7 +367,7 @@
contour->last_pos = *to;
node->data = edge;
FT_List_Add( contour->edges, node );
FT_List_Add( &contour->edges, node );
Exit:
return error;
@ -341,7 +394,7 @@
goto Exit;
}
contour = ( SDF_Contour* )shape->contours->tail->data;
contour = ( SDF_Contour* )shape->contours.tail->data;
error = sdf_edge_new( memory, &edge );
if ( error != FT_Err_Ok )
@ -360,7 +413,7 @@
contour->last_pos = *to;
node->data = edge;
FT_List_Add( contour->edges, node );
FT_List_Add( &contour->edges, node );
Exit:
return error;
@ -378,7 +431,7 @@
0 /* delta */
)
/* function decomposes the outline and puts it into the `shape' object */
/* function decomposes the outline and puts it into the `shape' struct */
static FT_Error
sdf_outline_decompose( FT_Outline* outline,
SDF_Shape* shape )
@ -453,6 +506,15 @@
FT_UNUSED( raster );
FT_UNUSED( params );
FT_Memory memory = (FT_Memory)((SDF_TRaster*)raster)->memory;
SDF_Shape * shape = NULL;
sdf_shape_new( memory, &shape );
sdf_outline_decompose( params->source, shape );
sdf_shape_done( memory, &shape );
return FT_THROW( Unimplemented_Feature );
}

6
src/sdf/ftsdfrend.c
View File

@ -196,9 +196,9 @@
slot->internal->flags &= ~FT_GLYPH_OWN_BITMAP;
}
/* preset the bitmap using the glyph's outline; */
/* the sdf bitmap is similar to an antialiased bitmap */
/* with a slighty bigger size and different pixel mode */
/* preset the bitmap using the glyph's outline; */
/* the sdf bitmap is similar to an antialiased bitmap */
/* with a slightly bigger size and different pixel mode */
if ( ft_glyphslot_preset_bitmap( slot, FT_RENDER_MODE_NORMAL, origin ) )
{
error = FT_THROW( Raster_Overflow );