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- /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*-
- *
- * The contents of this file are subject to the Netscape Public License
- * Version 1.0 (the "NPL"); you may not use this file except in
- * compliance with the NPL. You may obtain a copy of the NPL at
- * http://www.mozilla.org/NPL/
- *
- * Software distributed under the NPL is distributed on an "AS IS" basis,
- * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the NPL
- * for the specific language governing rights and limitations under the
- * NPL.
- *
- * The Initial Developer of this code under the NPL is Netscape
- * Communications Corporation. Portions created by Netscape are
- * Copyright (C) 1998 Netscape Communications Corporation. All Rights
- * Reserved.
- */
-
-
- #include "xp_core.h" //used to make library compile faster on win32 do not ifdef this or it wont work
-
- #include <memory.h>
- #include <stdio.h>
- #include <malloc.h>
-
- #include "xp_core.h"/*defines of int32 ect*/
- #include "xpassert.h"
- #include "xp_mcom.h"/*XP_STRDUP command*/
- #include "ntypes.h" /*for mwcontext for callback routines*/
-
- #include "libcnv.h"
- #include "readbmp.h"
- #include "writejpg.h"
- //#include "writepng.h"
- /*the following 4 includes are for the color quantization wrapper to colorqnt.h*/
- #include "pbmplus.h"
- #include "ppm.h"
- #include "ppmcmap.h"
- #include "colorqnt.h"
-
-
-
- /*accepts a stream of bytes that will be read in and converted to a JPEG/GIF FILE
- jpeg/gif file (default to p_output default) stream that is returned
- : you are responsible for free'ing the returned memory*/
- typedef void * LPVOID;
-
- CONVERT_IMG_INFO *create_img_info();
- void copy_img_info(CONVERT_IMG_INFO *p_dest,CONVERT_IMG_INFO *p_origin);
- void destroy_img_info(CONVERT_IMG_INFO *p_info);
-
- void clean_convert_img_array(CONVERT_IMG_ARRAY array,int16 count);
-
- /*PUBLIC API*/
- convimgenum
- select_file_type (CONVERT_IMGCONTEXT * p_input)
- {
- int16 c;
- if ((c = getc(p_input->m_stream.m_file)) == EOF)
- return conv_unknown;
- if (ungetc(c, p_input->m_stream.m_file) == EOF)
- return conv_unknown;
-
- switch (c) {
- case 'B':
- p_input->m_imagetype=conv_bmp;
- return conv_bmp;
- default:
- p_input->m_imagetype=conv_unknown;
- return conv_unknown;
- break;
- }
-
- return conv_unknown; /* suppress compiler warnings */
- }
-
- /*PUBLIC API*/
- CONVERT_IMAGERESULT
- convert_quantize_pixels(CONVERT_IMG_ARRAY imagearray,int16 imagewidth,int16 imageheight,int16 maxcolorvalue)
- {
- /*wrapper for colorqnt.cpp we just want to change the pixels, we dont need any info*/
- CONVERT_IMAGERESULT t_result;
- int16 t_dummycolors;
- colorhist_vector t_dummyvector;
- t_result=quantize_colors(imagearray,imagewidth,imageheight,&maxcolorvalue,&t_dummycolors,&t_dummyvector);
- if ( t_dummyvector == (colorhist_vector) 0 )
- return t_result;
- ppm_freecolorhist( t_dummyvector );
- return t_result;
- }
-
- CONVERT_IMG_INFO *create_img_info()
- {
- return calloc (1,sizeof(CONVERT_IMG_INFO));
- }
-
- void destroy_img_info(CONVERT_IMG_INFO *p_info)
- {
- if (p_info)
- {
- if (p_info->m_colormap)
- free(p_info->m_colormap);
- free (p_info);
- }
- }
-
- void copy_img_info(CONVERT_IMG_INFO *p_dest,CONVERT_IMG_INFO *p_origin)
- {
- XP_ASSERT(p_dest);
- XP_ASSERT(p_origin);
- memcpy(p_dest,p_origin,sizeof(CONVERT_IMG_INFO));/*shallow copy!!*/
- }
-
- /*PUBLIC API*/
- CONVERT_IMAGERESULT convert_stream2image(CONVERT_IMGCONTEXT p_input,CONVERT_IMG_INFO *p_imageinfo,int16 p_numoutputs,char **p_outputfilenames) /*0== OK <0 == user cancel >0 == error*/
- {
- CONVERT_IMGCONTEXT *t_outputparams;
- CONVERT_IMG_INFO *t_imageinfo=NULL;
- CONVERT_IMG_ARRAY t_rowarray=NULL;
- convimgenum t_outputtype;
- CONVERT_IMAGERESULT t_err;
- int16 i;
- XP_ASSERT(p_imageinfo);
- if ((!p_numoutputs)||(!p_imageinfo))
- return CONVERR_INVALIDDEST;
- if ((conv_unknown==p_input.m_imagetype)&&(CONVERT_MEMORY==p_input.m_stream.m_type)) /*dont know what it is and its not a file!*/
- return CONVERR_INVALIDSOURCE;/*reading unknown stream??*/
- t_outputparams=calloc(p_numoutputs,sizeof(CONVERT_IMGCONTEXT));
- if (!t_outputparams)
- return CONVERR_OUTOFMEMORY;
- else if ((conv_unknown==p_input.m_imagetype)&&(CONVERT_FILE==p_input.m_stream.m_type))
- {
- /*read in header info*/
- if (conv_unknown==select_file_type(&p_input))
- return CONVERR_INVALIDSOURCE;/*read file header and tell me what kind it is. also fill info into p_input*/
- }
- t_imageinfo=create_img_info();
- if (conv_bmp==p_input.m_imagetype) /*bitmap*/
- {
- t_err=start_input_bmp(t_imageinfo,&p_input);
- if (t_err==CONV_OK)
- {
- #if 0
- if (t_imageinfo->m_bitsperpixel<=8)/*256Colors GIF ..check colorspace*/
- t_outputtype=conv_png;
- else /* >8 means use JPEG*/
- #endif /*no png support for composer yet*/
- t_outputtype=conv_jpeg;
- for (i=0;i<p_numoutputs;i++)/*need to set defaults for outputs*/
- {
- t_outputparams[i].m_imagetype=t_outputtype;
- t_outputparams[i].m_callbacks=p_input.m_callbacks;
- }
- t_err==finish_input_bmp(t_imageinfo,&p_input,&t_rowarray);
- if (t_err!=CONV_OK)
- {
- clean_convert_img_array(t_rowarray,t_imageinfo->m_image_height);
- destroy_img_info(t_imageinfo);
- return t_err;
- }
- }
- else
- {
- destroy_img_info(t_imageinfo);
- return t_err;
- }
- }
- /*PICT CRAP HERE AS WELL AS XPM*/
- else
- {
- destroy_img_info(t_imageinfo);
- return CONVERR_INVALIDSOURCE;
- }
- /*callback: this must give us the information on how to convert the image. in case of JPEG, give us the same as parse_switches in the JPEG libraries
- they can change t_defaultoutput if they must and change t_imageinfo for default values i.e. color quantization*/
- if (!p_input.m_callbacks.m_dialogimagecallback)
- {
- clean_convert_img_array(t_rowarray,t_imageinfo->m_image_height);
- destroy_img_info(t_imageinfo);
- return CONV_CANCEL;
- }
- t_err=(*p_input.m_callbacks.m_dialogimagecallback)(&p_input,t_outputparams,t_imageinfo,p_numoutputs,t_rowarray);
- if (CONV_OK!=t_err)
- {
- clean_convert_img_array(t_rowarray,t_imageinfo->m_image_height);
- destroy_img_info(t_imageinfo);
- return t_err;
- }
- for (i=0;i<p_numoutputs;i++)
- {
- if (t_outputparams[i].m_stream.m_type!=CONVERT_FILE)
- {
- /* And we're done! */
- clean_convert_img_array(t_rowarray,t_imageinfo->m_image_height);
- destroy_img_info(t_imageinfo);
- return t_err;
- }
- //copying strings to p_outputfilenames[i]
- if (p_outputfilenames)
- p_outputfilenames[i]=XP_STRDUP(t_outputparams[i].m_filename);
- switch(t_outputparams[i].m_imagetype)
- {
- case conv_jpeg:
- {
- t_err=write_JPEG_file(t_rowarray,&t_outputparams[i],t_imageinfo,p_input.m_callbacks);
- if (t_err!=CONV_OK)
- {
- /* And we're done! */
- clean_convert_img_array(t_rowarray,t_imageinfo->m_image_height);
- destroy_img_info(t_imageinfo);
- return t_err;
- }
- }
- break;
- #if 0
- case conv_png:
- {
- /*color quantization*/
- t_err=write_PNG_file(t_rowarray,&(t_outputparams[i]),t_imageinfo,p_input.m_callbacks);
- if (t_err!=CONV_OK)
- {
- /* And we're done! */
- clean_convert_img_array(t_rowarray,t_imageinfo->m_image_height);
- destroy_img_info(t_imageinfo);
- return t_err;
- }
- }
- break;
- #endif //no png support for composer yet
- case conv_plugin: /*plugin*/
- {
- /* to be safe we will clear colormap out out p_outputinfos*/
- clean_convert_img_array(t_rowarray,t_imageinfo->m_image_height);
- copy_img_info(p_imageinfo,t_imageinfo);/*shallow copy! no colormap*/
- destroy_img_info(t_imageinfo);/*the color map is destroyed here */
- return CONV_OK; /*get rid of compiler warnings*/
- }
- break;
- default:
- {
- /* to be safe we will clear colormap out out p_outputinfos*/
- clean_convert_img_array(t_rowarray,t_imageinfo->m_image_height);
- copy_img_info(p_imageinfo,t_imageinfo);/*shallow copy! no colormap*/
- destroy_img_info(t_imageinfo);/*the color map is destroyed here */
- return CONVERR_INVALIDDEST;
- }
- break;
- }
- }
- /* to be safe we will clear colormap out out p_outputinfos*/
- clean_convert_img_array(t_rowarray,t_imageinfo->m_image_height);
- copy_img_info(p_imageinfo,t_imageinfo);/*shallow copy! no colormap*/
- destroy_img_info(t_imageinfo);/*the color map is destroyed here */
- if (p_input.m_callbacks.m_completecallback) //its OK to be null
- t_err=(*p_input.m_callbacks.m_completecallback)(t_outputparams,p_numoutputs,p_input.m_pMWContext);
- else
- t_err=CONV_OK;
- return t_err;
- }
-
-
-
- /*
- this clean function assumes the array has been cleared to 0 before being used.
- */
- void clean_convert_img_array(CONVERT_IMG_ARRAY array,int16 count)
- {
- int16 i;
- if (!array)
- return;
- for (i=0;i<count;i++)
- if (array[i])
- free(array[i]);
- free(array);
- }
-
-
-
- int16 read_mem_stream(CONVERT_IMG_STREAM *p_stream,void *p_dest,uint16 p_bytecount)
- {
- XP_ASSERT(p_stream);
- if ((p_stream->m_streamsize==0) ||((p_stream->m_currentindex+(DWORD)p_bytecount)<p_stream->m_streamsize))
- {
- memcpy(p_dest,p_stream->m_mem+p_stream->m_currentindex,p_bytecount);
- p_stream->m_currentindex+=p_bytecount;
- return p_bytecount;
- }
- return 0;/*read past end of stream*/
- }
-
- BYTE read_mem_stream_byte(CONVERT_IMG_STREAM *p_stream)
- {
- XP_ASSERT(p_stream);
- if ((p_stream->m_streamsize==0) ||((p_stream->m_currentindex+1)<p_stream->m_streamsize))
- {
- return p_stream->m_mem[p_stream->m_currentindex++];
- }
- XP_ASSERT(0);
- return 0;/*read past end of stream*/
- }
-
- int16 read_param(CONVERT_IMG_STREAM *p_input,void *p_dest,uint16 p_bytecount)
- {
- XP_ASSERT(p_input);
- if (CONVERT_MEMORY==p_input->m_type)
- return read_mem_stream(p_input,p_dest,p_bytecount);
- else if (CONVERT_FILE==p_input->m_type)
- return ReadOK(p_input->m_file,p_dest,p_bytecount);
- else
- {
- XP_ASSERT(0);
- return -1;
- }
- }
-
- BYTE read_param_byte(CONVERT_IMG_STREAM *p_input)
- {
- XP_ASSERT(p_input);
- if (CONVERT_MEMORY==p_input->m_type)
- return read_mem_stream_byte(p_input);
- else if (CONVERT_FILE==p_input->m_type)
- return (BYTE) getc(p_input->m_file);
- else
- {
- XP_ASSERT(0);
- return 0;
- }
- }
-
-
-