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authorDimitri van Heesch <dimitri@stack.nl>2009-08-14 14:49:07 (GMT)
committerDimitri van Heesch <dimitri@stack.nl>2009-08-14 14:49:07 (GMT)
commit8c6ca30831818a77a6947baad63ab99cb8cd8c31 (patch)
treefed426d0d7216311cbd009a1fcd2786176478b5e /src/pngenc.cpp
parent142b4807d2ae7479691bd0800d28364b9857b82f (diff)
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Release-1.5.9-20090814
Diffstat (limited to 'src/pngenc.cpp')
-rw-r--r--src/pngenc.cpp170
1 files changed, 0 insertions, 170 deletions
diff --git a/src/pngenc.cpp b/src/pngenc.cpp
deleted file mode 100644
index 6f8206e..0000000
--- a/src/pngenc.cpp
+++ /dev/null
@@ -1,170 +0,0 @@
-/******************************************************************************
- *
- *
- *
- *
- * Copyright (C) 1997-2008 by Dimitri van Heesch.
- *
- * Permission to use, copy, modify, and distribute this software and its
- * documentation under the terms of the GNU General Public License is hereby
- * granted. No representations are made about the suitability of this software
- * for any purpose. It is provided "as is" without express or implied warranty.
- * See the GNU General Public License for more details.
- *
- * Documents produced by Doxygen are derivative works derived from the
- * input used in their production; they are not affected by this license.
- *
- * ---------------------------------------------------------------------------
- *
- * The Portable Network Graphic format is an ISO Standard.
- * Most of the code below was donated by Bernhard Ristow.
- */
-
-#ifndef png_jmpbuf
-# define png_jmpbuf(png_ptr) ((png_ptr)->jmpbuf)
-#endif
-
-#define ALL_STATIC
-#include <../libpng/png.h>
-#include <stdio.h>
-#include <stdlib.h>
-#include <string.h>
-#include <errno.h>
-#include "pngenc.h"
-#include "message.h"
-
-#undef jmpbuf
-
-static void user_error_fn(png_structp, png_const_charp error_msg)
-{
- err("%s\n", error_msg);
-}
-
-static void user_warning_fn(png_structp, png_const_charp warning_msg)
-{
- err("%s\n", warning_msg);
-}
-
-PngEncoder::PngEncoder(Byte *rawBytes, Color *p, int w, int h, Byte d, int t) :
- data(rawBytes), palette(p), width(w), height(h), depth(d), transIndex(t)
-{
- numPixels = w*h;
- dataPtr = data;
-}
-
-PngEncoder::~PngEncoder()
-{
-}
-
-void PngEncoder::write(const char *name)
-{
- FILE * file = NULL;
- unsigned char ** rows = 0;
- unsigned char * cmap = 0;
- short numOfColors = (1<<depth);
- short bit_depth = 4;
- long i = 0;
- long j = 0;
- png_structp png_ptr;
- png_infop info_ptr;
- char user_error_ptr[] = "PngEncoder";
- png_colorp png_palette;
- png_byte ti[1];
-
- png_ptr = png_create_write_struct
- ( PNG_LIBPNG_VER_STRING, (png_voidp)user_error_ptr,
- user_error_fn, user_warning_fn);
- if (!png_ptr)
- {
- err("Can not allocate writing structure!\n");
- return;
- }
-
- info_ptr = png_create_info_struct(png_ptr);
- if (!info_ptr)
- {
- png_destroy_write_struct(&png_ptr, (png_infopp)NULL);
- err("Can not allocate writing structure!\n");
- return;
- }
-
- if (setjmp(png_jmpbuf(png_ptr)))
- {
- png_destroy_write_struct(&png_ptr, &info_ptr);
- return;
- }
- else
- {
- png_palette = (png_colorp) png_malloc(png_ptr,
- PNG_MAX_PALETTE_LENGTH*sizeof(png_color));
- memset(png_palette,0,PNG_MAX_PALETTE_LENGTH*sizeof(png_color));
- for (i=0; i<numOfColors; i++)
- {
- png_palette[i].red = palette[i].red;
- png_palette[i].green = palette[i].green;
- png_palette[i].blue = palette[i].blue;
- }
- png_set_PLTE(png_ptr, info_ptr, png_palette, numOfColors);
- png_set_IHDR( png_ptr, info_ptr, width, height, bit_depth,
- PNG_COLOR_TYPE_PALETTE, PNG_INTERLACE_NONE,
- PNG_COMPRESSION_TYPE_BASE, PNG_FILTER_TYPE_BASE
- );
- free(png_palette);
- ti[0] = transIndex;
- png_set_tRNS(png_ptr,info_ptr,ti,1,NULL);
- rows = (unsigned char **) calloc(sizeof(unsigned char*),height);
- rows[0] = (unsigned char *) calloc(sizeof(unsigned char),height*width);
- for (i=1; i<height; i++)
- {
- rows[i] = rows[i-1] + width;
- }
- for (i=0, dataPtr=data; i<height; i++)
- {
- for (j=0; j<width; j++)
- {
- if (j%2)
- {
- rows[i][j/2] = ( rows[i][j/2] | *dataPtr );
- }
- else
- {
- rows[i][j/2] = (*dataPtr) << 4;
- }
- dataPtr++;
- }
- }
- png_set_rows(png_ptr,info_ptr,rows);
-
- file = fopen(name,"wb");
- if (file==0)
- {
- err("Error opening png file %s for writing: %s!\n",name,strerror(errno));
- }
- else
- {
- png_init_io(png_ptr,file);
- png_write_png(png_ptr,info_ptr,PNG_TRANSFORM_IDENTITY,NULL);
- }
- }
-
- png_destroy_write_struct(&png_ptr, &info_ptr);
-
- if (file)
- {
- fclose (file);
- }
- if (cmap)
- {
- free(cmap);
- }
- if (rows)
- {
- if (rows[0])
- {
- free(rows[0]);
- }
- free(rows);
- }
- return;
-}
-