nr-pixblock.cpp File Reference

Allocation/Setup of NRPixBlock objects. More...

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Defines

#define __NR_PIXBLOCK_C__
#define NR_TINY_MAX   sizeof (unsigned char *)
 Size of buffer that needs no allocation (default 4).
#define NR_4K_BLOCK   32
#define NR_16K_BLOCK   32
#define NR_64K_BLOCK   32
#define NR_256K_BLOCK   32
#define NR_256K   262144
#define NR_1M_BLOCK   32
#define NR_1M   1048576

Functions

void nr_pixblock_setup_fast (NRPixBlock *pb, NR_PIXBLOCK_MODE mode, int x0, int y0, int x1, int y1, bool clear)
 Pixbuf initialisation using homegrown memory handling ("pixelstore").
void nr_pixblock_setup (NRPixBlock *pb, NR_PIXBLOCK_MODE mode, int x0, int y0, int x1, int y1, bool clear)
 Pixbuf initialisation using g_new.
void nr_pixblock_setup_extern (NRPixBlock *pb, NR_PIXBLOCK_MODE mode, int x0, int y0, int x1, int y1, unsigned char *px, int rs, bool empty, bool clear)
 Pixbuf initialisation with preset values.
void nr_pixblock_release (NRPixBlock *pb)
 Frees memory taken by pixel data in NRPixBlock.
NRPixBlock * nr_pixblock_new (NR_PIXBLOCK_MODE mode, int x0, int y0, int x1, int y1, bool clear)
 Allocates NRPixBlock and sets it up.
NRPixBlock * nr_pixblock_new_fast (NR_PIXBLOCK_MODE mode, int x0, int y0, int x1, int y1, bool clear)
 Allocates NRPixBlock and sets it up.
NRPixBlock * nr_pixblock_free (NRPixBlock *pb)
 Frees all memory taken by pixblock.
unsigned char * nr_pixelstore_4K_new (bool clear, unsigned char val)
void nr_pixelstore_4K_free (unsigned char *px)
unsigned char * nr_pixelstore_16K_new (bool clear, unsigned char val)
void nr_pixelstore_16K_free (unsigned char *px)
unsigned char * nr_pixelstore_64K_new (bool clear, unsigned char val)
void nr_pixelstore_64K_free (unsigned char *px)
unsigned char * nr_pixelstore_256K_new (bool clear, unsigned char val)
void nr_pixelstore_256K_free (unsigned char *px)
unsigned char * nr_pixelstore_1M_new (bool clear, unsigned char val)
void nr_pixelstore_1M_free (unsigned char *px)

Variables

static unsigned char ** nr_4K_px = NULL
static unsigned int nr_4K_len = 0
static unsigned int nr_4K_size = 0
static unsigned char ** nr_16K_px = NULL
static unsigned int nr_16K_len = 0
static unsigned int nr_16K_size = 0
static unsigned char ** nr_64K_px = NULL
static unsigned int nr_64K_len = 0
static unsigned int nr_64K_size = 0
static unsigned char ** nr_256K_px = NULL
static unsigned int nr_256K_len = 0
static unsigned int nr_256K_size = 0
static unsigned char ** nr_1M_px = NULL
static unsigned int nr_1M_len = 0
static unsigned int nr_1M_size = 0

Detailed Description

Allocation/Setup of NRPixBlock objects.

Pixel store functions.

Authors: (C) 1999-2002 Lauris Kaplinski <lauris@kaplinski.com> 2008, Jasper van de Gronde <th.v.d.gonde@hccnet.nl>

This code is in the Public Domain

Definition in file nr-pixblock.cpp.

Define Documentation

#define __NR_PIXBLOCK_C__

Definition at line 1 of file nr-pixblock.cpp.

#define NR_16K_BLOCK   32

Definition at line 310 of file nr-pixblock.cpp.

Referenced by nr_pixelstore_16K_free().

#define NR_1M   1048576

Definition at line 414 of file nr-pixblock.cpp.

Referenced by nr_pixelstore_1M_new().

#define NR_1M_BLOCK   32

Definition at line 413 of file nr-pixblock.cpp.

Referenced by nr_pixelstore_1M_free().

#define NR_256K   262144

Definition at line 379 of file nr-pixblock.cpp.

Referenced by nr_pixelstore_256K_new().

#define NR_256K_BLOCK   32

Definition at line 378 of file nr-pixblock.cpp.

Referenced by nr_pixelstore_256K_free().

#define NR_4K_BLOCK   32

Definition at line 276 of file nr-pixblock.cpp.

Referenced by nr_pixelstore_4K_free().

#define NR_64K_BLOCK   32

Definition at line 344 of file nr-pixblock.cpp.

Referenced by nr_pixelstore_64K_free().

#define NR_TINY_MAX   sizeof (unsigned char *)

Size of buffer that needs no allocation (default 4).

Definition at line 20 of file nr-pixblock.cpp.

Referenced by nr_pixblock_setup(), and nr_pixblock_setup_fast().

Function Documentation

NRPixBlock* nr_pixblock_free ( NRPixBlock *  pb  ) 

Frees all memory taken by pixblock.

Returns:
NULL

Definition at line 265 of file nr-pixblock.cpp.

References nr_pixblock_release(), and NULL.

Referenced by Inkscape::Filters::FilterGaussian::render(), and Inkscape::Filters::FilterComposite::render().

00266 {
00267     nr_pixblock_release (pb);
00268 
00269     g_free (pb);
00270 
00271     return NULL;
00272 }

NRPixBlock* nr_pixblock_new ( NR_PIXBLOCK_MODE  mode,
int  x0,
int  y0,
int  x1,
int  y1,
bool  clear 
)

Allocates NRPixBlock and sets it up.

Returns:
Pointer to fresh pixblock. Calls g_new() and nr_pixblock_setup(). FIXME: currently unused, delete? JG: Should be used more often! (To simplify memory management.)

Definition at line 220 of file nr-pixblock.cpp.

References NRPixBlock::data, nr_pixblock_setup(), NR_PIXBLOCK_SIZE_TINY, NRPixBlock::px, and NRPixBlock::size.

00221 {
00222     NRPixBlock *pb;
00223 
00224     pb = g_new (NRPixBlock, 1);
00225     if (!pb) return 0;
00226 
00227     nr_pixblock_setup (pb, mode, x0, y0, x1, y1, clear);
00228     if (pb->size!=NR_PIXBLOCK_SIZE_TINY && !pb->data.px) {
00229         g_free(pb);
00230         return 0;
00231     }
00232 
00233     return pb;
00234 }

NRPixBlock* nr_pixblock_new_fast ( NR_PIXBLOCK_MODE  mode,
int  x0,
int  y0,
int  x1,
int  y1,
bool  clear 
)

Allocates NRPixBlock and sets it up.

Returns:
Pointer to fresh pixblock. Calls g_new() and nr_pixblock_setup().

Definition at line 243 of file nr-pixblock.cpp.

References NRPixBlock::data, nr_pixblock_setup_fast(), NR_PIXBLOCK_SIZE_TINY, NRPixBlock::px, and NRPixBlock::size.

Referenced by Inkscape::Filters::FilterGaussian::render(), and Inkscape::Filters::FilterComposite::render().

00244 {
00245     NRPixBlock *pb;
00246 
00247     pb = g_new (NRPixBlock, 1);
00248     if (!pb) return 0;
00249 
00250     nr_pixblock_setup_fast (pb, mode, x0, y0, x1, y1, clear);
00251     if (pb->size!=NR_PIXBLOCK_SIZE_TINY && !pb->data.px) {
00252         g_free(pb);
00253         return 0;
00254     }
00255 
00256     return pb;
00257 }

void nr_pixblock_release ( NRPixBlock *  pb  ) 

Frees memory taken by pixel data in NRPixBlock.

Parameters:
pb Pointer to pixblock.
Precondition:
pb and pb->data.px point to valid addresses.

According to pb->size, one of the functions for freeing the pixelstore is called. May be called regardless of how pixbuf was set up.

Definition at line 182 of file nr-pixblock.cpp.

References NRPixBlock::data, NR_PIXBLOCK_SIZE_16K, NR_PIXBLOCK_SIZE_1M, NR_PIXBLOCK_SIZE_256K, NR_PIXBLOCK_SIZE_4K, NR_PIXBLOCK_SIZE_64K, NR_PIXBLOCK_SIZE_BIG, NR_PIXBLOCK_SIZE_STATIC, NR_PIXBLOCK_SIZE_TINY, nr_pixelstore_16K_free(), nr_pixelstore_1M_free(), nr_pixelstore_256K_free(), nr_pixelstore_4K_free(), nr_pixelstore_64K_free(), NRPixBlock::px, and NRPixBlock::size.

Referenced by clonetiler_trace_pick(), nr_arena_glyphs_group_render(), nr_arena_item_invoke_render(), nr_arena_render_paintserver_fill(), nr_arena_shape_clip(), nr_arena_shape_render(), nr_gdk_draw_gray_garbage(), nr_gdk_draw_rgba32_solid(), nr_pixblock_draw_line_rgba32(), nr_pixblock_free(), Inkscape::Filters::FilterMorphology::render(), Inkscape::Filters::FilterMerge::render(), Inkscape::Filters::FilterImage::render(), Inkscape::Filters::FilterGaussian::render(), Inkscape::Filters::FilterDisplacementMap::render(), Inkscape::Filters::FilterComponentTransfer::render(), Inkscape::Filters::FilterColorMatrix::render(), Inkscape::Filters::FilterBlend::render(), render_pixbuf(), sp_canvas_arena_render(), sp_canvas_paint_single_buffer(), sp_dropper_context_root_handler(), sp_export_get_rows(), sp_flood_do_flood_fill(), sp_font_preview_expose(), sp_gradient_image_update(), sp_icon_doc_icon(), sp_pat_fill(), sp_pattern_painter_free(), Inkscape::Filters::FilterTurbulence::update_pixbuffer(), and Inkscape::Filters::FilterTurbulence::~FilterTurbulence().

00183 {
00184     switch (pb->size) {
00185     case NR_PIXBLOCK_SIZE_TINY:
00186         break;
00187     case NR_PIXBLOCK_SIZE_4K:
00188         nr_pixelstore_4K_free (pb->data.px);
00189         break;
00190     case NR_PIXBLOCK_SIZE_16K:
00191         nr_pixelstore_16K_free (pb->data.px);
00192         break;
00193     case NR_PIXBLOCK_SIZE_64K:
00194         nr_pixelstore_64K_free (pb->data.px);
00195         break;
00196     case NR_PIXBLOCK_SIZE_256K:
00197         nr_pixelstore_256K_free (pb->data.px);
00198         break;
00199     case NR_PIXBLOCK_SIZE_1M:
00200         nr_pixelstore_1M_free (pb->data.px);
00201         break;
00202     case NR_PIXBLOCK_SIZE_BIG:
00203         g_free (pb->data.px);
00204         break;
00205     case NR_PIXBLOCK_SIZE_STATIC:
00206         break;
00207     default:
00208         break;
00209     }
00210 }

void nr_pixblock_setup ( NRPixBlock *  pb,
NR_PIXBLOCK_MODE  mode,
int  x0,
int  y0,
int  x1,
int  y1,
bool  clear 
)

Pixbuf initialisation using g_new.

After allocating memory, the buffer is cleared if the clear flag is set.

Parameters:
pb Pointer to the pixbuf struct.
mode Indicates grayscale/RGB/RGBA.
clear True if buffer should be cleared.
Precondition:
x1>=x0 && y1>=y0 && pb!=NULL FIXME: currently unused except for nr_pixblock_new and pattern tiles, replace with _fast and delete?

Definition at line 101 of file nr-pixblock.cpp.

References NRPixBlock::area, NRPixBlock::data, NRPixBlock::empty, h, NRPixBlock::mode, NR_PIXBLOCK_MODE_A8, NR_PIXBLOCK_MODE_R8G8B8, NR_PIXBLOCK_SIZE_BIG, NR_PIXBLOCK_SIZE_TINY, NR_TINY_MAX, NRPixBlock::p, NRPixBlock::px, NRPixBlock::rs, NRPixBlock::size, NRPixBlock::visible_area, dxf_input::w, NRRectL::x0, NRRectL::x1, NRRectL::y0, and NRRectL::y1.

Referenced by nr_pixblock_new(), and sp_pattern_painter_new().

00102 {
00103     int w, h, bpp;
00104     size_t size;
00105 
00106     w = x1 - x0;
00107     h = y1 - y0;
00108     bpp = (mode == NR_PIXBLOCK_MODE_A8) ? 1 : (mode == NR_PIXBLOCK_MODE_R8G8B8) ? 3 : 4;
00109 
00110     size = bpp * w * h;
00111 
00112     if (size <= NR_TINY_MAX) {
00113         pb->size = NR_PIXBLOCK_SIZE_TINY;
00114         if (clear) memset (pb->data.p, 0x0, size);
00115     } else {
00116         pb->size = NR_PIXBLOCK_SIZE_BIG;
00117         pb->data.px = g_new (unsigned char, size);
00118         if (clear) memset (pb->data.px, 0x0, size);
00119     }
00120 
00121     pb->mode = mode;
00122     pb->empty = 1;
00123     pb->visible_area.x0 = pb->area.x0 = x0;
00124     pb->visible_area.y0 = pb->area.y0 = y0;
00125     pb->visible_area.x1 = pb->area.x1 = x1;
00126     pb->visible_area.y1 = pb->area.y1 = y1;
00127     pb->rs = bpp * w;
00128 }

void nr_pixblock_setup_extern ( NRPixBlock *  pb,
NR_PIXBLOCK_MODE  mode,
int  x0,
int  y0,
int  x1,
int  y1,
unsigned char *  px,
int  rs,
bool  empty,
bool  clear 
)

Pixbuf initialisation with preset values.

After copying all parameters into the NRPixBlock struct, the pixel buffer is cleared if the clear flag is set.

Parameters:
pb Pointer to the pixbuf struct.
mode Indicates grayscale/RGB/RGBA.
clear True if buffer should be cleared.
Precondition:
x1>=x0 && y1>=y0 && pb!=NULL

Todo:
How do you recognise if

px was an uncleared tiny buffer?

Definition at line 140 of file nr-pixblock.cpp.

References NRPixBlock::area, NRPixBlock::data, NRPixBlock::empty, NRPixBlock::mode, NR_PIXBLOCK_MODE_A8, NR_PIXBLOCK_MODE_R8G8B8, NR_PIXBLOCK_SIZE_STATIC, NULL, NRPixBlock::px, NRPixBlock::rs, NRPixBlock::size, NRPixBlock::visible_area, dxf_input::w, NRRectL::x0, NRRectL::x1, voronoi::y, NRRectL::y0, and NRRectL::y1.

Referenced by clonetiler_trace_pick(), nr_arena_item_invoke_render(), Inkscape::Filters::FilterImage::render(), render_pixbuf(), sp_canvas_arena_render(), sp_canvas_paint_single_buffer(), sp_export_get_rows(), sp_flood_do_flood_fill(), sp_font_preview_expose(), sp_generate_internal_bitmap(), sp_gradient_image_update(), sp_icon_doc_icon(), and sp_pat_fill().

00141 {
00142     int w, bpp;
00143 
00144     w = x1 - x0;
00145     bpp = (mode == NR_PIXBLOCK_MODE_A8) ? 1 : (mode == NR_PIXBLOCK_MODE_R8G8B8) ? 3 : 4;
00146 
00147     pb->size = NR_PIXBLOCK_SIZE_STATIC; 
00148     pb->mode = mode;
00149     pb->empty = empty;
00150     pb->visible_area.x0 = pb->area.x0 = x0;
00151     pb->visible_area.y0 = pb->area.y0 = y0;
00152     pb->visible_area.x1 = pb->area.x1 = x1;
00153     pb->visible_area.y1 = pb->area.y1 = y1;
00154     pb->data.px = px;
00155     pb->rs = rs;
00156 
00157         g_assert (pb->data.px != NULL);
00158     if (clear) {
00159         if (rs == bpp * w) {
00162             if (pb->data.px) 
00163                 memset (pb->data.px, 0x0, bpp * (y1 - y0) * w);
00164         } else {
00165             int y;
00166             for (y = y0; y < y1; y++) {
00167                 memset (pb->data.px + (y - y0) * rs, 0x0, bpp * w);
00168             }
00169         }
00170     }
00171 }

void nr_pixblock_setup_fast ( NRPixBlock *  pb,
NR_PIXBLOCK_MODE  mode,
int  x0,
int  y0,
int  x1,
int  y1,
bool  clear 
)

Pixbuf initialisation using homegrown memory handling ("pixelstore").

Pixbuf sizes are differentiated into tiny, <4K, <16K, <64K, and more, with each type having its own method of memory handling. After allocating memory, the buffer is cleared if the clear flag is set. Intended to reduce memory fragmentation.

Parameters:
pb Pointer to the pixbuf struct.
mode Indicates grayscale/RGB/RGBA.
clear True if buffer should be cleared.
Precondition:
x1>=x0 && y1>=y0 && pb!=NULL

Definition at line 35 of file nr-pixblock.cpp.

References NRPixBlock::area, NRPixBlock::data, NRPixBlock::empty, h, NRPixBlock::mode, NR_PIXBLOCK_MODE_A8, NR_PIXBLOCK_MODE_R8G8B8, NR_PIXBLOCK_SIZE_16K, NR_PIXBLOCK_SIZE_1M, NR_PIXBLOCK_SIZE_256K, NR_PIXBLOCK_SIZE_4K, NR_PIXBLOCK_SIZE_64K, NR_PIXBLOCK_SIZE_BIG, NR_PIXBLOCK_SIZE_TINY, nr_pixelstore_16K_new(), nr_pixelstore_1M_new(), nr_pixelstore_256K_new(), nr_pixelstore_4K_new(), nr_pixelstore_64K_new(), NR_TINY_MAX, NULL, NRPixBlock::p, NRPixBlock::px, NRPixBlock::rs, NRPixBlock::size, NRPixBlock::visible_area, dxf_input::w, NRRectL::x0, NRRectL::x1, NRRectL::y0, and NRRectL::y1.

Referenced by main(), nr_arena_glyphs_group_render(), nr_arena_item_get_background(), nr_arena_item_invoke_render(), nr_arena_render_paintserver_fill(), nr_arena_shape_clip(), nr_arena_shape_render(), nr_gdk_draw_gray_garbage(), nr_gdk_draw_rgba32_solid(), nr_pixblock_draw_line_rgba32(), nr_pixblock_new_fast(), Inkscape::Filters::Filter::render(), Inkscape::Filters::FilterTurbulence::render(), Inkscape::Filters::FilterTile::render(), Inkscape::Filters::FilterSpecularLighting::render(), Inkscape::Filters::FilterOffset::render(), Inkscape::Filters::FilterMorphology::render(), Inkscape::Filters::FilterMerge::render(), Inkscape::Filters::FilterImage::render(), Inkscape::Filters::FilterGaussian::render(), Inkscape::Filters::FilterFlood::render(), Inkscape::Filters::FilterDisplacementMap::render(), Inkscape::Filters::FilterDiffuseLighting::render(), Inkscape::Filters::FilterConvolveMatrix::render(), Inkscape::Filters::FilterComposite::render(), Inkscape::Filters::FilterComponentTransfer::render(), Inkscape::Filters::FilterColorMatrix::render(), Inkscape::Filters::FilterBlend::render(), sp_canvas_paint_single_buffer(), sp_dropper_context_root_handler(), sp_dyna_draw_brush(), sp_font_preview_expose(), and Inkscape::Filters::FilterTurbulence::update_pixbuffer().

00036 {
00037     int w, h, bpp;
00038     size_t size;
00039 
00040     w = x1 - x0;
00041     h = y1 - y0;
00042     bpp = (mode == NR_PIXBLOCK_MODE_A8) ? 1 : (mode == NR_PIXBLOCK_MODE_R8G8B8) ? 3 : 4;
00043 
00044     size = bpp * w * h;
00045 
00046     if (size <= NR_TINY_MAX) {
00047         pb->size = NR_PIXBLOCK_SIZE_TINY;
00048         if (clear) memset (pb->data.p, 0x0, size);
00049     } else if (size <= 4096) {
00050         pb->size = NR_PIXBLOCK_SIZE_4K;
00051         pb->data.px = nr_pixelstore_4K_new (clear, 0x0);
00052     } else if (size <= 16384) {
00053         pb->size = NR_PIXBLOCK_SIZE_16K;
00054         pb->data.px = nr_pixelstore_16K_new (clear, 0x0);
00055     } else if (size <= 65536) {
00056         pb->size = NR_PIXBLOCK_SIZE_64K;
00057         pb->data.px = nr_pixelstore_64K_new (clear, 0x0);
00058     } else if (size <= 262144) {
00059         pb->size = NR_PIXBLOCK_SIZE_256K;
00060         pb->data.px = nr_pixelstore_256K_new (clear, 0x0);
00061     } else if (size <= 1048576) {
00062         pb->size = NR_PIXBLOCK_SIZE_1M;
00063         pb->data.px = nr_pixelstore_1M_new (clear, 0x0);
00064     } else {
00065         pb->size = NR_PIXBLOCK_SIZE_BIG;
00066              pb->data.px = NULL;
00067         if (size > 100000000) { // Don't even try to allocate more than 100Mb (5000x5000 RGBA
00068                             // pixels). It'll just bog the system down even if successful. FIXME:
00069                             // Can anyone suggest something better than the magic number?
00070                 g_warning ("%lu bytes requested for pixel buffer, I won't try to allocate that.", (long unsigned) size);
00071                 return;
00072              }
00073         pb->data.px = g_try_new (unsigned char, size);
00074         if (pb->data.px == NULL) { // memory allocation failed
00075                 g_warning ("Could not allocate %lu bytes for pixel buffer!", (long unsigned) size);
00076                 return;
00077              }
00078         if (clear) memset (pb->data.px, 0x0, size);
00079     }
00080 
00081     pb->mode = mode;
00082     pb->empty = 1;
00083     pb->visible_area.x0 = pb->area.x0 = x0;
00084     pb->visible_area.y0 = pb->area.y0 = y0;
00085     pb->visible_area.x1 = pb->area.x1 = x1;
00086     pb->visible_area.y1 = pb->area.y1 = y1;
00087     pb->rs = bpp * w;
00088 }

void nr_pixelstore_16K_free ( unsigned char *  px  ) 

Definition at line 333 of file nr-pixblock.cpp.

References NR_16K_BLOCK, nr_16K_len, nr_16K_px, and nr_16K_size.

Referenced by nr_pixblock_release(), and sp_font_preview_expose().

00334 {
00335     if (nr_16K_len == nr_16K_size) {
00336         nr_16K_size += NR_16K_BLOCK;
00337         nr_16K_px = g_renew (unsigned char *, nr_16K_px, nr_16K_size);
00338     }
00339 
00340     nr_16K_px[nr_16K_len] = px;
00341     nr_16K_len += 1;
00342 }

unsigned char* nr_pixelstore_16K_new ( bool  clear,
unsigned char  val 
)

Definition at line 316 of file nr-pixblock.cpp.

References nr_16K_len, and nr_16K_px.

Referenced by nr_pixblock_setup_fast(), and sp_font_preview_expose().

00317 {
00318     unsigned char *px;
00319 
00320     if (nr_16K_len != 0) {
00321         nr_16K_len -= 1;
00322         px = nr_16K_px[nr_16K_len];
00323     } else {
00324         px = g_new (unsigned char, 16384);
00325     }
00326     
00327     if (clear) memset (px, val, 16384);
00328 
00329     return px;
00330 }

void nr_pixelstore_1M_free ( unsigned char *  px  ) 

Definition at line 437 of file nr-pixblock.cpp.

References NR_1M_BLOCK, nr_1M_len, nr_1M_px, and nr_1M_size.

Referenced by nr_pixblock_release(), and sp_canvas_paint_single_buffer().

00438 {
00439     if (nr_1M_len == nr_1M_size) {
00440         nr_1M_size += NR_1M_BLOCK;
00441         nr_1M_px = g_renew (unsigned char *, nr_1M_px, nr_1M_size);
00442     }
00443 
00444     nr_1M_px[nr_1M_len] = px;
00445     nr_1M_len += 1;
00446 }

unsigned char* nr_pixelstore_1M_new ( bool  clear,
unsigned char  val 
)

Definition at line 420 of file nr-pixblock.cpp.

References NR_1M, nr_1M_len, and nr_1M_px.

Referenced by nr_pixblock_setup_fast(), and sp_canvas_paint_single_buffer().

00421 {
00422     unsigned char *px;
00423 
00424     if (nr_1M_len != 0) {
00425         nr_1M_len -= 1;
00426         px = nr_1M_px[nr_1M_len];
00427     } else {
00428            px = g_new (unsigned char, NR_1M);
00429     }
00430 
00431     if (clear) memset (px, val, NR_1M);
00432 
00433     return px;
00434 }

void nr_pixelstore_256K_free ( unsigned char *  px  ) 

Definition at line 402 of file nr-pixblock.cpp.

References NR_256K_BLOCK, nr_256K_len, nr_256K_px, and nr_256K_size.

Referenced by nr_pixblock_release(), and sp_canvas_paint_single_buffer().

00403 {
00404     if (nr_256K_len == nr_256K_size) {
00405         nr_256K_size += NR_256K_BLOCK;
00406         nr_256K_px = g_renew (unsigned char *, nr_256K_px, nr_256K_size);
00407     }
00408 
00409     nr_256K_px[nr_256K_len] = px;
00410     nr_256K_len += 1;
00411 }

unsigned char* nr_pixelstore_256K_new ( bool  clear,
unsigned char  val 
)

Definition at line 385 of file nr-pixblock.cpp.

References NR_256K, nr_256K_len, and nr_256K_px.

Referenced by nr_pixblock_setup_fast(), and sp_canvas_paint_single_buffer().

00386 {
00387     unsigned char *px;
00388 
00389     if (nr_256K_len != 0) {
00390         nr_256K_len -= 1;
00391         px = nr_256K_px[nr_256K_len];
00392     } else {
00393            px = g_new (unsigned char, NR_256K);
00394     }
00395 
00396     if (clear) memset (px, val, NR_256K);
00397 
00398     return px;
00399 }

void nr_pixelstore_4K_free ( unsigned char *  px  ) 

Definition at line 299 of file nr-pixblock.cpp.

References NR_4K_BLOCK, nr_4K_len, nr_4K_px, and nr_4K_size.

Referenced by nr_pixblock_release().

00300 {
00301     if (nr_4K_len == nr_4K_size) {
00302         nr_4K_size += NR_4K_BLOCK;
00303         nr_4K_px = g_renew (unsigned char *, nr_4K_px, nr_4K_size);
00304     }
00305 
00306     nr_4K_px[nr_4K_len] = px;
00307     nr_4K_len += 1;
00308 }

unsigned char* nr_pixelstore_4K_new ( bool  clear,
unsigned char  val 
)

Definition at line 282 of file nr-pixblock.cpp.

References nr_4K_len, and nr_4K_px.

Referenced by nr_pixblock_setup_fast().

00283 {
00284     unsigned char *px;
00285 
00286     if (nr_4K_len != 0) {
00287         nr_4K_len -= 1;
00288         px = nr_4K_px[nr_4K_len];
00289     } else {
00290         px = g_new (unsigned char, 4096);
00291     }
00292     
00293     if (clear) memset (px, val, 4096);
00294 
00295     return px;
00296 }

void nr_pixelstore_64K_free ( unsigned char *  px  ) 

Definition at line 367 of file nr-pixblock.cpp.

References NR_64K_BLOCK, nr_64K_len, nr_64K_px, and nr_64K_size.

Referenced by nr_pixblock_release(), and sp_export_png_file().

00368 {
00369     if (nr_64K_len == nr_64K_size) {
00370         nr_64K_size += NR_64K_BLOCK;
00371         nr_64K_px = g_renew (unsigned char *, nr_64K_px, nr_64K_size);
00372     }
00373 
00374     nr_64K_px[nr_64K_len] = px;
00375     nr_64K_len += 1;
00376 }

unsigned char* nr_pixelstore_64K_new ( bool  clear,
unsigned char  val 
)

Definition at line 350 of file nr-pixblock.cpp.

References nr_64K_len, and nr_64K_px.

Referenced by nr_pixblock_setup_fast(), and sp_export_png_file().

00351 {
00352     unsigned char *px;
00353 
00354     if (nr_64K_len != 0) {
00355         nr_64K_len -= 1;
00356         px = nr_64K_px[nr_64K_len];
00357     } else {
00358         px = g_new (unsigned char, 65536);
00359     }
00360 
00361     if (clear) memset (px, val, 65536);
00362 
00363     return px;
00364 }

Variable Documentation

unsigned int nr_16K_len = 0 [static]

Definition at line 312 of file nr-pixblock.cpp.

Referenced by nr_pixelstore_16K_free(), and nr_pixelstore_16K_new().

unsigned char** nr_16K_px = NULL [static]

Definition at line 311 of file nr-pixblock.cpp.

Referenced by nr_pixelstore_16K_free(), and nr_pixelstore_16K_new().

unsigned int nr_16K_size = 0 [static]

Definition at line 313 of file nr-pixblock.cpp.

Referenced by nr_pixelstore_16K_free().

unsigned int nr_1M_len = 0 [static]

Definition at line 416 of file nr-pixblock.cpp.

Referenced by nr_pixelstore_1M_free(), and nr_pixelstore_1M_new().

unsigned char** nr_1M_px = NULL [static]

Definition at line 415 of file nr-pixblock.cpp.

Referenced by nr_pixelstore_1M_free(), and nr_pixelstore_1M_new().

unsigned int nr_1M_size = 0 [static]

Definition at line 417 of file nr-pixblock.cpp.

Referenced by nr_pixelstore_1M_free().

unsigned int nr_256K_len = 0 [static]

Definition at line 381 of file nr-pixblock.cpp.

Referenced by nr_pixelstore_256K_free(), and nr_pixelstore_256K_new().

unsigned char** nr_256K_px = NULL [static]

Definition at line 380 of file nr-pixblock.cpp.

Referenced by nr_pixelstore_256K_free(), and nr_pixelstore_256K_new().

unsigned int nr_256K_size = 0 [static]

Definition at line 382 of file nr-pixblock.cpp.

Referenced by nr_pixelstore_256K_free().

unsigned int nr_4K_len = 0 [static]

Definition at line 278 of file nr-pixblock.cpp.

Referenced by nr_pixelstore_4K_free(), and nr_pixelstore_4K_new().

unsigned char** nr_4K_px = NULL [static]

Definition at line 277 of file nr-pixblock.cpp.

Referenced by nr_pixelstore_4K_free(), and nr_pixelstore_4K_new().

unsigned int nr_4K_size = 0 [static]

Definition at line 279 of file nr-pixblock.cpp.

Referenced by nr_pixelstore_4K_free().

unsigned int nr_64K_len = 0 [static]

Definition at line 346 of file nr-pixblock.cpp.

Referenced by nr_pixelstore_64K_free(), and nr_pixelstore_64K_new().

unsigned char** nr_64K_px = NULL [static]

Definition at line 345 of file nr-pixblock.cpp.

Referenced by nr_pixelstore_64K_free(), and nr_pixelstore_64K_new().

unsigned int nr_64K_size = 0 [static]

Definition at line 347 of file nr-pixblock.cpp.

Referenced by nr_pixelstore_64K_free().