85 lines
1.8 KiB
C++
85 lines
1.8 KiB
C++
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#include <Rect.h>
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#include <Bitmap.h>
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#include <stdio.h>
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#include <unistd.h>
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#include <png.h>
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#include <ColorUtils.h>
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#include "PNGDump.h"
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//#define DEBUG_PNGDUMP
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void SaveToPNG(const char *filename, const BRect &bounds, color_space space,
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const void *bits, const int32 &bitslength, const int32 bytesperrow)
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{
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#ifdef DEBUG_PNGDUMP
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printf("SaveToPNG: %s ",filename);
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bounds.PrintToStream();
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#endif
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FILE *fp;
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png_structp png_ptr;
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png_infop info_ptr;
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fp=fopen(filename, "wb");
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if(fp==NULL)
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{
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#ifdef DEBUG_PNGDUMP
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printf("Couldn't open file\n");
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#endif
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return;
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}
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png_ptr=png_create_write_struct(PNG_LIBPNG_VER_STRING, NULL, NULL, NULL);
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if(png_ptr==NULL)
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{
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#ifdef DEBUG_PNGDUMP
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printf("Couldn't create write struct\n");
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#endif
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fclose(fp);
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return;
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}
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info_ptr=png_create_info_struct(png_ptr);
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if(info_ptr==NULL)
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{
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#ifdef DEBUG_PNGDUMP
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printf("Couldn't create info struct\n");
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#endif
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fclose(fp);
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png_destroy_write_struct(&png_ptr, (png_infopp)NULL);
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return;
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}
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if(setjmp(png_ptr->jmpbuf))
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{
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#ifdef DEBUG_PNGDUMP
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printf("Couldn't set jump\n");
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#endif
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fclose(fp);
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png_destroy_write_struct(&png_ptr, (png_infopp)NULL);
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return;
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}
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png_init_io(png_ptr, fp);
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png_set_compression_level(png_ptr,Z_NO_COMPRESSION);
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png_set_IHDR(png_ptr, info_ptr, bounds.IntegerWidth(), bounds.IntegerHeight(), 8, PNG_COLOR_TYPE_RGB,
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PNG_INTERLACE_NONE, PNG_COMPRESSION_TYPE_BASE, PNG_FILTER_TYPE_BASE);
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png_write_info(png_ptr, info_ptr);
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png_byte *row_pointers[bounds.IntegerHeight()];
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png_byte *index=(png_byte*)bits;
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for(int32 i=0;i<bounds.IntegerHeight();i++)
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{
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row_pointers[i]=index;
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index+=bytesperrow;
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}
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png_write_image(png_ptr, row_pointers);
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png_write_end(png_ptr, info_ptr);
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png_destroy_write_struct(&png_ptr, (png_infopp)NULL);
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fclose(fp);
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}
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