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-rw-r--r--src/libnr/nr-pixblock.cpp457
1 files changed, 0 insertions, 457 deletions
diff --git a/src/libnr/nr-pixblock.cpp b/src/libnr/nr-pixblock.cpp
deleted file mode 100644
index 6b2b12b7b..000000000
--- a/src/libnr/nr-pixblock.cpp
+++ /dev/null
@@ -1,457 +0,0 @@
-#define __NR_PIXBLOCK_C__
-
-/** \file
- * \brief 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
- */
-
-#include <cstring>
-#include <string>
-#include <string.h>
-#include <glib/gmem.h>
-#include "nr-pixblock.h"
-
-/// Size of buffer that needs no allocation (default 4).
-#define NR_TINY_MAX sizeof (unsigned char *)
-
-/**
- * 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.
- * \param pb Pointer to the pixbuf struct.
- * \param mode Indicates grayscale/RGB/RGBA.
- * \param clear True if buffer should be cleared.
- * \pre x1>=x0 && y1>=y0 && pb!=NULL
- */
-void
-nr_pixblock_setup_fast (NRPixBlock *pb, NR_PIXBLOCK_MODE mode, int x0, int y0, int x1, int y1, bool clear)
-{
- int w, h, bpp;
- size_t size;
-
- w = x1 - x0;
- h = y1 - y0;
- bpp = (mode == NR_PIXBLOCK_MODE_A8) ? 1 : (mode == NR_PIXBLOCK_MODE_R8G8B8) ? 3 : 4;
-
- size = bpp * w * h;
-
- if (size <= NR_TINY_MAX) {
- pb->size = NR_PIXBLOCK_SIZE_TINY;
- if (clear) memset (pb->data.p, 0x0, size);
- } else if (size <= 4096) {
- pb->size = NR_PIXBLOCK_SIZE_4K;
- pb->data.px = nr_pixelstore_4K_new (clear, 0x0);
- } else if (size <= 16384) {
- pb->size = NR_PIXBLOCK_SIZE_16K;
- pb->data.px = nr_pixelstore_16K_new (clear, 0x0);
- } else if (size <= 65536) {
- pb->size = NR_PIXBLOCK_SIZE_64K;
- pb->data.px = nr_pixelstore_64K_new (clear, 0x0);
- } else if (size <= 262144) {
- pb->size = NR_PIXBLOCK_SIZE_256K;
- pb->data.px = nr_pixelstore_256K_new (clear, 0x0);
- } else if (size <= 1048576) {
- pb->size = NR_PIXBLOCK_SIZE_1M;
- pb->data.px = nr_pixelstore_1M_new (clear, 0x0);
- } else {
- pb->size = NR_PIXBLOCK_SIZE_BIG;
- pb->data.px = NULL;
- if (size > 100000000) { // Don't even try to allocate more than 100Mb (5000x5000 RGBA
- // pixels). It'll just bog the system down even if successful. FIXME:
- // Can anyone suggest something better than the magic number?
- g_warning ("%lu bytes requested for pixel buffer, I won't try to allocate that.", (long unsigned) size);
- return;
- }
- pb->data.px = g_try_new (unsigned char, size);
- if (pb->data.px == NULL) { // memory allocation failed
- g_warning ("Could not allocate %lu bytes for pixel buffer!", (long unsigned) size);
- return;
- }
- if (clear) memset (pb->data.px, 0x0, size);
- }
-
- pb->mode = mode;
- pb->empty = 1;
- pb->visible_area.x0 = pb->area.x0 = x0;
- pb->visible_area.y0 = pb->area.y0 = y0;
- pb->visible_area.x1 = pb->area.x1 = x1;
- pb->visible_area.y1 = pb->area.y1 = y1;
- pb->rs = bpp * w;
-}
-
-/**
- * Pixbuf initialisation using g_new.
- *
- * After allocating memory, the buffer is cleared if the clear flag is set.
- * \param pb Pointer to the pixbuf struct.
- * \param mode Indicates grayscale/RGB/RGBA.
- * \param clear True if buffer should be cleared.
- * \pre x1>=x0 && y1>=y0 && pb!=NULL
- FIXME: currently unused except for nr_pixblock_new and pattern tiles, replace with _fast and delete?
- */
-void
-nr_pixblock_setup (NRPixBlock *pb, NR_PIXBLOCK_MODE mode, int x0, int y0, int x1, int y1, bool clear)
-{
- int w, h, bpp;
- size_t size;
-
- w = x1 - x0;
- h = y1 - y0;
- bpp = (mode == NR_PIXBLOCK_MODE_A8) ? 1 : (mode == NR_PIXBLOCK_MODE_R8G8B8) ? 3 : 4;
-
- size = bpp * w * h;
-
- if (size <= NR_TINY_MAX) {
- pb->size = NR_PIXBLOCK_SIZE_TINY;
- if (clear) memset (pb->data.p, 0x0, size);
- } else {
- pb->size = NR_PIXBLOCK_SIZE_BIG;
- pb->data.px = g_new (unsigned char, size);
- if (clear) memset (pb->data.px, 0x0, size);
- }
-
- pb->mode = mode;
- pb->empty = 1;
- pb->visible_area.x0 = pb->area.x0 = x0;
- pb->visible_area.y0 = pb->area.y0 = y0;
- pb->visible_area.x1 = pb->area.x1 = x1;
- pb->visible_area.y1 = pb->area.y1 = y1;
- pb->rs = bpp * w;
-}
-
-/**
- * Pixbuf initialisation with preset values.
- *
- * After copying all parameters into the NRPixBlock struct, the pixel buffer is cleared if the clear flag is set.
- * \param pb Pointer to the pixbuf struct.
- * \param mode Indicates grayscale/RGB/RGBA.
- * \param clear True if buffer should be cleared.
- * \pre x1>=x0 && y1>=y0 && pb!=NULL
- */
-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)
-{
- int w, bpp;
-
- w = x1 - x0;
- bpp = (mode == NR_PIXBLOCK_MODE_A8) ? 1 : (mode == NR_PIXBLOCK_MODE_R8G8B8) ? 3 : 4;
-
- pb->size = NR_PIXBLOCK_SIZE_STATIC;
- pb->mode = mode;
- pb->empty = empty;
- pb->visible_area.x0 = pb->area.x0 = x0;
- pb->visible_area.y0 = pb->area.y0 = y0;
- pb->visible_area.x1 = pb->area.x1 = x1;
- pb->visible_area.y1 = pb->area.y1 = y1;
- pb->data.px = px;
- pb->rs = rs;
-
- g_assert (pb->data.px != NULL);
- if (clear) {
- if (rs == bpp * w) {
- /// \todo How do you recognise if
- /// px was an uncleared tiny buffer?
- if (pb->data.px)
- memset (pb->data.px, 0x0, bpp * (y1 - y0) * w);
- } else {
- int y;
- for (y = y0; y < y1; y++) {
- memset (pb->data.px + (y - y0) * rs, 0x0, bpp * w);
- }
- }
- }
-}
-
-/**
- * Frees memory taken by pixel data in NRPixBlock.
- * \param pb Pointer to pixblock.
- * \pre 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.
- */
-void
-nr_pixblock_release (NRPixBlock *pb)
-{
- switch (pb->size) {
- case NR_PIXBLOCK_SIZE_TINY:
- break;
- case NR_PIXBLOCK_SIZE_4K:
- nr_pixelstore_4K_free (pb->data.px);
- break;
- case NR_PIXBLOCK_SIZE_16K:
- nr_pixelstore_16K_free (pb->data.px);
- break;
- case NR_PIXBLOCK_SIZE_64K:
- nr_pixelstore_64K_free (pb->data.px);
- break;
- case NR_PIXBLOCK_SIZE_256K:
- nr_pixelstore_256K_free (pb->data.px);
- break;
- case NR_PIXBLOCK_SIZE_1M:
- nr_pixelstore_1M_free (pb->data.px);
- break;
- case NR_PIXBLOCK_SIZE_BIG:
- g_free (pb->data.px);
- break;
- case NR_PIXBLOCK_SIZE_STATIC:
- break;
- default:
- break;
- }
-}
-
-/**
- * Allocates NRPixBlock and sets it up.
- *
- * \return 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.)
- */
-NRPixBlock *
-nr_pixblock_new (NR_PIXBLOCK_MODE mode, int x0, int y0, int x1, int y1, bool clear)
-{
- NRPixBlock *pb;
-
- pb = g_new (NRPixBlock, 1);
- if (!pb) return 0;
-
- nr_pixblock_setup (pb, mode, x0, y0, x1, y1, clear);
- if (pb->size!=NR_PIXBLOCK_SIZE_TINY && !pb->data.px) {
- g_free(pb);
- return 0;
- }
-
- return pb;
-}
-
-/**
- * Allocates NRPixBlock and sets it up.
- *
- * \return Pointer to fresh pixblock.
- * Calls g_new() and nr_pixblock_setup().
- */
-NRPixBlock *
-nr_pixblock_new_fast (NR_PIXBLOCK_MODE mode, int x0, int y0, int x1, int y1, bool clear)
-{
- NRPixBlock *pb;
-
- pb = g_new (NRPixBlock, 1);
- if (!pb) return 0;
-
- nr_pixblock_setup_fast (pb, mode, x0, y0, x1, y1, clear);
- if (pb->size!=NR_PIXBLOCK_SIZE_TINY && !pb->data.px) {
- g_free(pb);
- return 0;
- }
-
- return pb;
-}
-
-/**
- * Frees all memory taken by pixblock.
- *
- * \return NULL
- */
-NRPixBlock *
-nr_pixblock_free (NRPixBlock *pb)
-{
- nr_pixblock_release (pb);
-
- g_free (pb);
-
- return NULL;
-}
-
-/* PixelStore operations */
-
-#define NR_4K_BLOCK 32
-static unsigned char **nr_4K_px = NULL;
-static unsigned int nr_4K_len = 0;
-static unsigned int nr_4K_size = 0;
-
-unsigned char *
-nr_pixelstore_4K_new (bool clear, unsigned char val)
-{
- unsigned char *px;
-
- if (nr_4K_len != 0) {
- nr_4K_len -= 1;
- px = nr_4K_px[nr_4K_len];
- } else {
- px = g_new (unsigned char, 4096);
- }
-
- if (clear) memset (px, val, 4096);
-
- return px;
-}
-
-void
-nr_pixelstore_4K_free (unsigned char *px)
-{
- if (nr_4K_len == nr_4K_size) {
- nr_4K_size += NR_4K_BLOCK;
- nr_4K_px = g_renew (unsigned char *, nr_4K_px, nr_4K_size);
- }
-
- nr_4K_px[nr_4K_len] = px;
- nr_4K_len += 1;
-}
-
-#define NR_16K_BLOCK 32
-static unsigned char **nr_16K_px = NULL;
-static unsigned int nr_16K_len = 0;
-static unsigned int nr_16K_size = 0;
-
-unsigned char *
-nr_pixelstore_16K_new (bool clear, unsigned char val)
-{
- unsigned char *px;
-
- if (nr_16K_len != 0) {
- nr_16K_len -= 1;
- px = nr_16K_px[nr_16K_len];
- } else {
- px = g_new (unsigned char, 16384);
- }
-
- if (clear) memset (px, val, 16384);
-
- return px;
-}
-
-void
-nr_pixelstore_16K_free (unsigned char *px)
-{
- if (nr_16K_len == nr_16K_size) {
- nr_16K_size += NR_16K_BLOCK;
- nr_16K_px = g_renew (unsigned char *, nr_16K_px, nr_16K_size);
- }
-
- nr_16K_px[nr_16K_len] = px;
- nr_16K_len += 1;
-}
-
-#define NR_64K_BLOCK 32
-static unsigned char **nr_64K_px = NULL;
-static unsigned int nr_64K_len = 0;
-static unsigned int nr_64K_size = 0;
-
-unsigned char *
-nr_pixelstore_64K_new (bool clear, unsigned char val)
-{
- unsigned char *px;
-
- if (nr_64K_len != 0) {
- nr_64K_len -= 1;
- px = nr_64K_px[nr_64K_len];
- } else {
- px = g_new (unsigned char, 65536);
- }
-
- if (clear) memset (px, val, 65536);
-
- return px;
-}
-
-void
-nr_pixelstore_64K_free (unsigned char *px)
-{
- if (nr_64K_len == nr_64K_size) {
- nr_64K_size += NR_64K_BLOCK;
- nr_64K_px = g_renew (unsigned char *, nr_64K_px, nr_64K_size);
- }
-
- nr_64K_px[nr_64K_len] = px;
- nr_64K_len += 1;
-}
-
-#define NR_256K_BLOCK 32
-#define NR_256K 262144
-static unsigned char **nr_256K_px = NULL;
-static unsigned int nr_256K_len = 0;
-static unsigned int nr_256K_size = 0;
-
-unsigned char *
-nr_pixelstore_256K_new (bool clear, unsigned char val)
-{
- unsigned char *px;
-
- if (nr_256K_len != 0) {
- nr_256K_len -= 1;
- px = nr_256K_px[nr_256K_len];
- } else {
- px = g_new (unsigned char, NR_256K);
- }
-
- if (clear) memset (px, val, NR_256K);
-
- return px;
-}
-
-void
-nr_pixelstore_256K_free (unsigned char *px)
-{
- if (nr_256K_len == nr_256K_size) {
- nr_256K_size += NR_256K_BLOCK;
- nr_256K_px = g_renew (unsigned char *, nr_256K_px, nr_256K_size);
- }
-
- nr_256K_px[nr_256K_len] = px;
- nr_256K_len += 1;
-}
-
-#define NR_1M_BLOCK 32
-#define NR_1M 1048576
-static unsigned char **nr_1M_px = NULL;
-static unsigned int nr_1M_len = 0;
-static unsigned int nr_1M_size = 0;
-
-unsigned char *
-nr_pixelstore_1M_new (bool clear, unsigned char val)
-{
- unsigned char *px;
-
- if (nr_1M_len != 0) {
- nr_1M_len -= 1;
- px = nr_1M_px[nr_1M_len];
- } else {
- px = g_new (unsigned char, NR_1M);
- }
-
- if (clear) memset (px, val, NR_1M);
-
- return px;
-}
-
-void
-nr_pixelstore_1M_free (unsigned char *px)
-{
- if (nr_1M_len == nr_1M_size) {
- nr_1M_size += NR_1M_BLOCK;
- nr_1M_px = g_renew (unsigned char *, nr_1M_px, nr_1M_size);
- }
-
- nr_1M_px[nr_1M_len] = px;
- nr_1M_len += 1;
-}
-
-/*
- Local Variables:
- mode:c++
- c-file-style:"stroustrup"
- c-file-offsets:((innamespace . 0)(inline-open . 0)(case-label . +))
- indent-tabs-mode:nil
- fill-column:99
- End:
-*/
-// vim: filetype=cpp:expandtab:shiftwidth=4:tabstop=8:softtabstop=4:encoding=utf-8:textwidth=99 :
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