-/* Copyright (C)2004 Landmark Graphics Corporation
- * Copyright (C)2005 Sun Microsystems, Inc.
+/*
+ * Copyright (C)2011 D. R. Commander. All Rights Reserved.
*
- * This library is free software and may be redistributed and/or modified under
- * the terms of the wxWindows Library License, Version 3.1 or (at your option)
- * any later version. The full license is in the LICENSE.txt file included
- * with this distribution.
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
*
- * This library is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * wxWindows Library License for more details.
-*/
-
-#include <fcntl.h>
-#include <sys/types.h>
-#include <sys/stat.h>
-#include <errno.h>
-#include <stdlib.h>
+ * - Redistributions of source code must retain the above copyright notice,
+ * this list of conditions and the following disclaimer.
+ * - Redistributions in binary form must reproduce the above copyright notice,
+ * this list of conditions and the following disclaimer in the documentation
+ * and/or other materials provided with the distribution.
+ * - Neither the name of the libjpeg-turbo Project nor the names of its
+ * contributors may be used to endorse or promote products derived from this
+ * software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS",
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDERS OR CONTRIBUTORS BE
+ * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+ * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+ * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ */
+
#include <stdio.h>
#include <string.h>
-#ifdef _WIN32
- #include <io.h>
-#else
- #include <unistd.h>
-#endif
-#include "./rrutil.h"
-#include "./bmp.h"
-
-#ifndef BI_BITFIELDS
-#define BI_BITFIELDS 3L
-#endif
-#ifndef BI_RGB
-#define BI_RGB 0L
-#endif
-
-#define BMPHDRSIZE 54
-typedef struct _bmphdr
-{
- unsigned short bfType;
- unsigned int bfSize;
- unsigned short bfReserved1, bfReserved2;
- unsigned int bfOffBits;
-
- unsigned int biSize;
- int biWidth, biHeight;
- unsigned short biPlanes, biBitCount;
- unsigned int biCompression, biSizeImage;
- int biXPelsPerMeter, biYPelsPerMeter;
- unsigned int biClrUsed, biClrImportant;
-} bmphdr;
-
-static const char *__bmperr="No error";
-
-static const int ps[BMPPIXELFORMATS]={3, 4, 3, 4, 4, 4};
-static const int roffset[BMPPIXELFORMATS]={0, 0, 2, 2, 3, 1};
-static const int goffset[BMPPIXELFORMATS]={1, 1, 1, 1, 2, 2};
-static const int boffset[BMPPIXELFORMATS]={2, 2, 0, 0, 1, 3};
-
-#define _throw(m) {__bmperr=m; retcode=-1; goto finally;}
-#define _unix(f) {if((f)==-1) _throw(strerror(errno));}
-#define _catch(f) {if((f)==-1) {retcode=-1; goto finally;}}
-
-#define readme(fd, addr, size) \
- if((bytesread=read(fd, addr, (size)))==-1) _throw(strerror(errno)); \
- if(bytesread!=(size)) _throw("Read error");
-
-void pixelconvert(unsigned char *srcbuf, enum BMPPIXELFORMAT srcformat,
- int srcpitch, unsigned char *dstbuf, enum BMPPIXELFORMAT dstformat, int dstpitch,
- int w, int h, int flip)
+#include <setjmp.h>
+#include <errno.h>
+#include <jpeglib.h>
+#include <jpegint.h>
+#include "cdjpeg.h"
+#include "bmp.h"
+
+
+/* This duplicates the functionality of the VirtualGL bitmap library using
+ the components from cjpeg and djpeg */
+
+
+/* Error handling (based on example in example.c) */
+
+static char errStr[JMSG_LENGTH_MAX]="No error";
+
+struct my_error_mgr
{
- unsigned char *srcptr, *srcptr0, *dstptr, *dstptr0;
- int i, j;
+ struct jpeg_error_mgr pub;
+ jmp_buf setjmp_buffer;
+};
+typedef struct my_error_mgr *my_error_ptr;
- srcptr=flip? &srcbuf[srcpitch*(h-1)]:srcbuf;
- for(j=0, dstptr=dstbuf; j<h; j++,
- srcptr+=flip? -srcpitch:srcpitch, dstptr+=dstpitch)
- {
- for(i=0, srcptr0=srcptr, dstptr0=dstptr; i<w; i++,
- srcptr0+=ps[srcformat], dstptr0+=ps[dstformat])
- {
- dstptr0[roffset[dstformat]]=srcptr0[roffset[srcformat]];
- dstptr0[goffset[dstformat]]=srcptr0[goffset[srcformat]];
- dstptr0[boffset[dstformat]]=srcptr0[boffset[srcformat]];
- }
- }
+static void my_error_exit(j_common_ptr cinfo)
+{
+ my_error_ptr myerr=(my_error_ptr)cinfo->err;
+ (*cinfo->err->output_message)(cinfo);
+ longjmp(myerr->setjmp_buffer, 1);
}
-int loadppm(int *fd, unsigned char **buf, int *w, int *h,
- enum BMPPIXELFORMAT f, int align, int dstbottomup, int ascii)
+/* Based on output_message() in jerror.c */
+
+static void my_output_message(j_common_ptr cinfo)
{
- FILE *fs=NULL; int retcode=0, scalefactor, dstpitch;
- unsigned char *tempbuf=NULL; char temps[255], temps2[255];
- int numread=0, totalread=0, pixel[3], i, j;
+ (*cinfo->err->format_message)(cinfo, errStr);
+}
- if((fs=fdopen(*fd, "r"))==NULL) _throw(strerror(errno));
+#define _throw(m) {snprintf(errStr, JMSG_LENGTH_MAX, "%s", m); \
+ retval=-1; goto bailout;}
+#define _throwunix(m) {snprintf(errStr, JMSG_LENGTH_MAX, "%s\n%s", m, \
+ strerror(errno)); retval=-1; goto bailout;}
- do
- {
- if(!fgets(temps, 255, fs)) _throw("Read error");
- if(strlen(temps)==0 || temps[0]=='\n') continue;
- if(sscanf(temps, "%s", temps2)==1 && temps2[1]=='#') continue;
- switch(totalread)
- {
- case 0:
- if((numread=sscanf(temps, "%d %d %d", w, h, &scalefactor))==EOF)
- _throw("Read error");
- break;
- case 1:
- if((numread=sscanf(temps, "%d %d", h, &scalefactor))==EOF)
- _throw("Read error");
- break;
- case 2:
- if((numread=sscanf(temps, "%d", &scalefactor))==EOF)
- _throw("Read error");
- break;
- }
- totalread+=numread;
- } while(totalread<3);
- if((*w)<1 || (*h)<1 || scalefactor<1) _throw("Corrupt PPM header");
-
- dstpitch=(((*w)*ps[f])+(align-1))&(~(align-1));
- if((*buf=(unsigned char *)malloc(dstpitch*(*h)))==NULL)
- _throw("Memory allocation error");
- if(ascii)
+
+static void pixelconvert(unsigned char *srcbuf, int srcpf, int srcbottomup,
+ unsigned char *dstbuf, int dstpf, int dstbottomup, int w, int h)
+{
+ unsigned char *srcptr=srcbuf, *srcptr2;
+ int srcps=tjPixelSize[srcpf];
+ int srcstride=srcbottomup? -w*srcps:w*srcps;
+ unsigned char *dstptr=dstbuf, *dstptr2;
+ int dstps=tjPixelSize[dstpf];
+ int dststride=dstbottomup? -w*dstps:w*dstps;
+ int row, col;
+
+ if(srcbottomup) srcptr=&srcbuf[w*srcps*(h-1)];
+ if(dstbottomup) dstptr=&dstbuf[w*dstps*(h-1)];
+ for(row=0; row<h; row++, srcptr+=srcstride, dstptr+=dststride)
{
- for(j=0; j<*h; j++)
+ for(col=0, srcptr2=srcptr, dstptr2=dstptr; col<w; col++, srcptr2+=srcps,
+ dstptr2+=dstps)
{
- for(i=0; i<*w; i++)
- {
- if(fscanf(fs, "%d%d%d", &pixel[0], &pixel[1], &pixel[2])!=3)
- _throw("Read error");
- (*buf)[j*dstpitch+i*ps[f]+roffset[f]]=(unsigned char)(pixel[0]*255/scalefactor);
- (*buf)[j*dstpitch+i*ps[f]+goffset[f]]=(unsigned char)(pixel[1]*255/scalefactor);
- (*buf)[j*dstpitch+i*ps[f]+boffset[f]]=(unsigned char)(pixel[2]*255/scalefactor);
- }
+ dstptr2[tjRedOffset[dstpf]]=srcptr2[tjRedOffset[srcpf]];
+ dstptr2[tjGreenOffset[dstpf]]=srcptr2[tjGreenOffset[srcpf]];
+ dstptr2[tjBlueOffset[dstpf]]=srcptr2[tjBlueOffset[srcpf]];
}
}
- else
- {
- if(scalefactor!=255)
- _throw("Binary PPMs must have 8-bit components");
- if((tempbuf=(unsigned char *)malloc((*w)*(*h)*3))==NULL)
- _throw("Memory allocation error");
- if(fread(tempbuf, (*w)*(*h)*3, 1, fs)!=1) _throw("Read error");
- pixelconvert(tempbuf, BMP_RGB, (*w)*3, *buf, f, dstpitch, *w, *h, dstbottomup);
- }
-
- finally:
- if(fs) {fclose(fs); *fd=-1;}
- if(tempbuf) free(tempbuf);
- return retcode;
}
int loadbmp(char *filename, unsigned char **buf, int *w, int *h,
- enum BMPPIXELFORMAT f, int align, int dstbottomup)
+ int dstpf, int bottomup)
{
- int fd=-1, bytesread, srcpitch, srcbottomup=1, srcps, dstpitch,
- retcode=0;
- unsigned char *tempbuf=NULL;
- bmphdr bh; int flags=O_RDONLY;
-
- dstbottomup=dstbottomup? 1:0;
- #ifdef _WIN32
- flags|=O_BINARY;
- #endif
- if(!filename || !buf || !w || !h || f<0 || f>BMPPIXELFORMATS-1 || align<1)
- _throw("invalid argument to loadbmp()");
- if((align&(align-1))!=0)
- _throw("Alignment must be a power of 2");
- _unix(fd=open(filename, flags));
-
- readme(fd, &bh.bfType, sizeof(unsigned short));
- if(!littleendian()) bh.bfType=byteswap16(bh.bfType);
-
- if(bh.bfType==0x3650)
+ int retval=0, dstps, srcpf, tempc;
+ struct jpeg_compress_struct cinfo;
+ struct my_error_mgr jerr;
+ cjpeg_source_ptr src;
+ FILE *file=NULL;
+
+ if(!filename || !buf || !w || !h || dstpf<0 || dstpf>=TJ_NUMPF)
+ _throw("loadbmp(): Invalid argument");
+
+ if((file=fopen(filename, "rb"))==NULL)
+ _throwunix("loadbmp(): Cannot open input file");
+
+ cinfo.err=jpeg_std_error(&jerr.pub);
+ jerr.pub.error_exit=my_error_exit;
+ jerr.pub.output_message=my_output_message;
+
+ if(setjmp(jerr.setjmp_buffer))
{
- _catch(loadppm(&fd, buf, w, h, f, align, dstbottomup, 0));
- goto finally;
+ /* If we get here, the JPEG code has signaled an error. */
+ retval=-1; goto bailout;
}
- if(bh.bfType==0x3350)
+
+ jpeg_create_compress(&cinfo);
+ if((tempc=getc(file))<0 || ungetc(tempc, file)==EOF)
+ _throwunix("loadbmp(): Could not read input file")
+ else if(tempc==EOF) _throw("loadbmp(): Input file contains no data");
+
+ if(tempc=='B')
{
- _catch(loadppm(&fd, buf, w, h, f, align, dstbottomup, 1));
- goto finally;
+ if((src=jinit_read_bmp(&cinfo))==NULL)
+ _throw("loadbmp(): Could not initialize bitmap loader");
}
-
- readme(fd, &bh.bfSize, sizeof(unsigned int));
- readme(fd, &bh.bfReserved1, sizeof(unsigned short));
- readme(fd, &bh.bfReserved2, sizeof(unsigned short));
- readme(fd, &bh.bfOffBits, sizeof(unsigned int));
- readme(fd, &bh.biSize, sizeof(unsigned int));
- readme(fd, &bh.biWidth, sizeof(int));
- readme(fd, &bh.biHeight, sizeof(int));
- readme(fd, &bh.biPlanes, sizeof(unsigned short));
- readme(fd, &bh.biBitCount, sizeof(unsigned short));
- readme(fd, &bh.biCompression, sizeof(unsigned int));
- readme(fd, &bh.biSizeImage, sizeof(unsigned int));
- readme(fd, &bh.biXPelsPerMeter, sizeof(int));
- readme(fd, &bh.biYPelsPerMeter, sizeof(int));
- readme(fd, &bh.biClrUsed, sizeof(unsigned int));
- readme(fd, &bh.biClrImportant, sizeof(unsigned int));
-
- if(!littleendian())
+ else if(tempc=='P')
{
- bh.bfSize=byteswap(bh.bfSize);
- bh.bfOffBits=byteswap(bh.bfOffBits);
- bh.biSize=byteswap(bh.biSize);
- bh.biWidth=byteswap(bh.biWidth);
- bh.biHeight=byteswap(bh.biHeight);
- bh.biPlanes=byteswap16(bh.biPlanes);
- bh.biBitCount=byteswap16(bh.biBitCount);
- bh.biCompression=byteswap(bh.biCompression);
- bh.biSizeImage=byteswap(bh.biSizeImage);
- bh.biXPelsPerMeter=byteswap(bh.biXPelsPerMeter);
- bh.biYPelsPerMeter=byteswap(bh.biYPelsPerMeter);
- bh.biClrUsed=byteswap(bh.biClrUsed);
- bh.biClrImportant=byteswap(bh.biClrImportant);
+ if((src=jinit_read_ppm(&cinfo))==NULL)
+ _throw("loadbmp(): Could not initialize bitmap loader");
}
+ else _throw("loadbmp(): Unsupported file type");
- if(bh.bfType!=0x4d42 || bh.bfOffBits<BMPHDRSIZE
- || bh.biWidth<1 || bh.biHeight==0)
- _throw("Corrupt bitmap header");
- if((bh.biBitCount!=24 && bh.biBitCount!=32) || bh.biCompression!=BI_RGB)
- _throw("Only uncompessed RGB bitmaps are supported");
-
- *w=bh.biWidth; *h=bh.biHeight; srcps=bh.biBitCount/8;
- if(*h<0) {*h=-(*h); srcbottomup=0;}
- srcpitch=(((*w)*srcps)+3)&(~3);
- dstpitch=(((*w)*ps[f])+(align-1))&(~(align-1));
-
- if(srcpitch*(*h)+bh.bfOffBits!=bh.bfSize) _throw("Corrupt bitmap header");
- if((tempbuf=(unsigned char *)malloc(srcpitch*(*h)))==NULL
- || (*buf=(unsigned char *)malloc(dstpitch*(*h)))==NULL)
- _throw("Memory allocation error");
- if(lseek(fd, (long)bh.bfOffBits, SEEK_SET)!=(long)bh.bfOffBits)
- _throw(strerror(errno));
- _unix(bytesread=read(fd, tempbuf, srcpitch*(*h)));
- if(bytesread!=srcpitch*(*h)) _throw("Read error");
-
- pixelconvert(tempbuf, BMP_BGR, srcpitch, *buf, f, dstpitch, *w, *h,
- srcbottomup!=dstbottomup);
-
- finally:
- if(tempbuf) free(tempbuf);
- if(fd!=-1) close(fd);
- return retcode;
-}
-
-#define writeme(fd, addr, size) \
- if((byteswritten=write(fd, addr, (size)))==-1) _throw(strerror(errno)); \
- if(byteswritten!=(size)) _throw("Write error");
+ src->input_file=file;
+ (*src->start_input)(&cinfo, src);
+ (*cinfo.mem->realize_virt_arrays)((j_common_ptr)&cinfo);
-int saveppm(char *filename, unsigned char *buf, int w, int h,
- enum BMPPIXELFORMAT f, int srcpitch, int srcbottomup)
-{
- FILE *fs=NULL; int retcode=0;
- unsigned char *tempbuf=NULL;
+ *w=cinfo.image_width; *h=cinfo.image_height;
- if((fs=fopen(filename, "wb"))==NULL) _throw(strerror(errno));
- if(fprintf(fs, "P6\n")<1) _throw("Write error");
- if(fprintf(fs, "%d %d\n", w, h)<1) _throw("Write error");
- if(fprintf(fs, "255\n")<1) _throw("Write error");
+ if(cinfo.input_components==1 && cinfo.in_color_space==JCS_RGB)
+ srcpf=TJPF_GRAY;
+ else srcpf=TJPF_RGB;
- if((tempbuf=(unsigned char *)malloc(w*h*3))==NULL)
- _throw("Memory allocation error");
+ dstps=tjPixelSize[dstpf];
+ if((*buf=(unsigned char *)malloc((*w)*(*h)*dstps))==NULL)
+ _throw("loadbmp(): Memory allocation failure");
- pixelconvert(buf, f, srcpitch, tempbuf, BMP_RGB, w*3, w, h,
- srcbottomup);
+ while(cinfo.next_scanline<cinfo.image_height)
+ {
+ int i, nlines=(*src->get_pixel_rows)(&cinfo, src);
+ for(i=0; i<nlines; i++)
+ {
+ unsigned char *outbuf; int row;
+ row=cinfo.next_scanline+i;
+ if(bottomup) outbuf=&(*buf)[((*h)-row-1)*(*w)*dstps];
+ else outbuf=&(*buf)[row*(*w)*dstps];
+ pixelconvert(src->buffer[i], srcpf, 0, outbuf, dstpf, bottomup, *w,
+ nlines);
+ }
+ cinfo.next_scanline+=nlines;
+ }
- if((fwrite(tempbuf, w*h*3, 1, fs))!=1) _throw("Write error");
+ (*src->finish_input)(&cinfo, src);
- finally:
- if(tempbuf) free(tempbuf);
- if(fs) fclose(fs);
- return retcode;
+ bailout:
+ jpeg_destroy_compress(&cinfo);
+ if(file) fclose(file);
+ if(retval<0 && buf && *buf) {free(*buf); *buf=NULL;}
+ return retval;
}
-int savebmp(char *filename, unsigned char *buf, int w, int h,
- enum BMPPIXELFORMAT f, int srcpitch, int srcbottomup)
+
+int savebmp(char *filename, unsigned char *buf, int w, int h, int srcpf,
+ int bottomup)
{
- int fd=-1, byteswritten, dstpitch, retcode=0;
- int flags=O_RDWR|O_CREAT|O_TRUNC;
- unsigned char *tempbuf=NULL; char *temp;
- bmphdr bh; int mode;
-
- #ifdef _WIN32
- flags|=O_BINARY; mode=_S_IREAD|_S_IWRITE;
- #else
- mode=S_IRUSR|S_IWUSR|S_IRGRP|S_IWGRP|S_IROTH|S_IWOTH;
- #endif
- if(!filename || !buf || w<1 || h<1 || f<0 || f>BMPPIXELFORMATS-1 || srcpitch<0)
- _throw("bad argument to savebmp()");
-
- if(srcpitch==0) srcpitch=w*ps[f];
-
- if((temp=strrchr(filename, '.'))!=NULL)
+ int retval=0, srcps, dstpf;
+ struct jpeg_decompress_struct dinfo;
+ struct my_error_mgr jerr;
+ djpeg_dest_ptr dst;
+ FILE *file=NULL;
+ char *ptr=NULL;
+
+ if(!filename || !buf || w<1 || h<1 || srcpf<0 || srcpf>=TJ_NUMPF)
+ _throw("savebmp(): Invalid argument");
+
+ if((file=fopen(filename, "wb"))==NULL)
+ _throwunix("savebmp(): Cannot open output file");
+
+ dinfo.err=jpeg_std_error(&jerr.pub);
+ jerr.pub.error_exit=my_error_exit;
+ jerr.pub.output_message=my_output_message;
+
+ if(setjmp(jerr.setjmp_buffer))
+ {
+ /* If we get here, the JPEG code has signaled an error. */
+ retval=-1; goto bailout;
+ }
+
+ jpeg_create_decompress(&dinfo);
+ if(srcpf==TJPF_GRAY)
+ {
+ dinfo.out_color_components=dinfo.output_components=1;
+ dinfo.out_color_space=JCS_GRAYSCALE;
+ }
+ else
{
- if(!stricmp(temp, ".ppm"))
- return saveppm(filename, buf, w, h, f, srcpitch, srcbottomup);
+ dinfo.out_color_components=dinfo.output_components=3;
+ dinfo.out_color_space=JCS_RGB;
}
+ dinfo.image_width=w; dinfo.image_height=h;
+ dinfo.global_state=DSTATE_READY;
+ dinfo.scale_num=dinfo.scale_denom=1;
- _unix(fd=open(filename, flags, mode));
- dstpitch=((w*3)+3)&(~3);
-
- bh.bfType=0x4d42;
- bh.bfSize=BMPHDRSIZE+dstpitch*h;
- bh.bfReserved1=0; bh.bfReserved2=0;
- bh.bfOffBits=BMPHDRSIZE;
- bh.biSize=40;
- bh.biWidth=w; bh.biHeight=h;
- bh.biPlanes=0; bh.biBitCount=24;
- bh.biCompression=BI_RGB; bh.biSizeImage=0;
- bh.biXPelsPerMeter=0; bh.biYPelsPerMeter=0;
- bh.biClrUsed=0; bh.biClrImportant=0;
-
- if(!littleendian())
+ ptr=strrchr(filename, '.');
+ if(ptr && !strcasecmp(ptr, ".bmp"))
+ {
+ if((dst=jinit_write_bmp(&dinfo, 0))==NULL)
+ _throw("savebmp(): Could not initialize bitmap writer");
+ }
+ else
{
- bh.bfType=byteswap16(bh.bfType);
- bh.bfSize=byteswap(bh.bfSize);
- bh.bfOffBits=byteswap(bh.bfOffBits);
- bh.biSize=byteswap(bh.biSize);
- bh.biWidth=byteswap(bh.biWidth);
- bh.biHeight=byteswap(bh.biHeight);
- bh.biPlanes=byteswap16(bh.biPlanes);
- bh.biBitCount=byteswap16(bh.biBitCount);
- bh.biCompression=byteswap(bh.biCompression);
- bh.biSizeImage=byteswap(bh.biSizeImage);
- bh.biXPelsPerMeter=byteswap(bh.biXPelsPerMeter);
- bh.biYPelsPerMeter=byteswap(bh.biYPelsPerMeter);
- bh.biClrUsed=byteswap(bh.biClrUsed);
- bh.biClrImportant=byteswap(bh.biClrImportant);
+ if((dst=jinit_write_ppm(&dinfo))==NULL)
+ _throw("savebmp(): Could not initialize PPM writer");
}
- writeme(fd, &bh.bfType, sizeof(unsigned short));
- writeme(fd, &bh.bfSize, sizeof(unsigned int));
- writeme(fd, &bh.bfReserved1, sizeof(unsigned short));
- writeme(fd, &bh.bfReserved2, sizeof(unsigned short));
- writeme(fd, &bh.bfOffBits, sizeof(unsigned int));
- writeme(fd, &bh.biSize, sizeof(unsigned int));
- writeme(fd, &bh.biWidth, sizeof(int));
- writeme(fd, &bh.biHeight, sizeof(int));
- writeme(fd, &bh.biPlanes, sizeof(unsigned short));
- writeme(fd, &bh.biBitCount, sizeof(unsigned short));
- writeme(fd, &bh.biCompression, sizeof(unsigned int));
- writeme(fd, &bh.biSizeImage, sizeof(unsigned int));
- writeme(fd, &bh.biXPelsPerMeter, sizeof(int));
- writeme(fd, &bh.biYPelsPerMeter, sizeof(int));
- writeme(fd, &bh.biClrUsed, sizeof(unsigned int));
- writeme(fd, &bh.biClrImportant, sizeof(unsigned int));
-
- if((tempbuf=(unsigned char *)malloc(dstpitch*h))==NULL)
- _throw("Memory allocation error");
-
- pixelconvert(buf, f, srcpitch, tempbuf, BMP_BGR, dstpitch, w, h,
- !srcbottomup);
-
- if((byteswritten=write(fd, tempbuf, dstpitch*h))!=dstpitch*h)
- _throw(strerror(errno));
-
- finally:
- if(tempbuf) free(tempbuf);
- if(fd!=-1) close(fd);
- return retcode;
+ dst->output_file=file;
+ (*dst->start_output)(&dinfo, dst);
+ (*dinfo.mem->realize_virt_arrays)((j_common_ptr)&dinfo);
+
+ if(srcpf==TJPF_GRAY) dstpf=srcpf;
+ else dstpf=TJPF_RGB;
+ srcps=tjPixelSize[srcpf];
+
+ while(dinfo.output_scanline<dinfo.output_height)
+ {
+ int i, nlines=dst->buffer_height;
+ for(i=0; i<nlines; i++)
+ {
+ unsigned char *inbuf; int row;
+ row=dinfo.output_scanline+i;
+ if(bottomup) inbuf=&buf[(h-row-1)*w*srcps];
+ else inbuf=&buf[row*w*srcps];
+ pixelconvert(inbuf, srcpf, bottomup, dst->buffer[i], dstpf, 0, w,
+ nlines);
+ }
+ (*dst->put_pixel_rows)(&dinfo, dst, nlines);
+ dinfo.output_scanline+=nlines;
+ }
+
+ (*dst->finish_output)(&dinfo, dst);
+
+ bailout:
+ jpeg_destroy_decompress(&dinfo);
+ if(file) fclose(file);
+ return retval;
}
const char *bmpgeterr(void)
{
- return __bmperr;
+ return errStr;
}
projects / libjpeg-turbo / commitdiff