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/* |
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parse_image.c - Part of psiconv, a PSION 5 file formats converter |
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Copyright (c) 1999 Frodo Looijaard <frodol@dds.nl> |
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|
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This program is free software; you can redistribute it and/or modify |
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it under the terms of the GNU General Public License as published by |
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the Free Software Foundation; either version 2 of the License, or |
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(at your option) any later version. |
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|
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This program is distributed in the hope that it will be useful, |
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but WITHOUT ANY WARRANTY; without even the implied warranty of |
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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GNU General Public License for more details. |
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|
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You should have received a copy of the GNU General Public License |
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along with this program; if not, write to the Free Software |
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Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. |
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*/ |
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|
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#include "config.h" |
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#include <stdlib.h> |
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|
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#include "data.h" |
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#include "parse_routines.h" |
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|
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int psiconv_parse_mbm_jumptable_section(const psiconv_buffer buf,int lev, |
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psiconv_u32 off, int *length, |
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psiconv_mbm_jumptable_section *result) |
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{ |
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int res = 0; |
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int len = 0; |
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psiconv_u32 listlen,temp; |
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int i; |
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|
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psiconv_progress(lev+1,off+len,"Going to read the mbm jumptable section"); |
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(*result) = psiconv_list_new(sizeof(psiconv_u32)); |
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|
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psiconv_progress(lev+2,off+len,"Going to read the list length"); |
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listlen = psiconv_read_u32(buf,lev+2,off+len); |
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psiconv_debug(lev+2,off+len,"List length: %08x",listlen); |
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len += 4; |
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|
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psiconv_progress(lev+2,off+len,"Going to read the list"); |
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for (i = 0; i < listlen; i++) { |
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temp = psiconv_read_u32(buf,lev+2,off+len); |
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psiconv_list_add(*result,&temp); |
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psiconv_debug(lev+3,off+len,"Offset: %08x",temp); |
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len += 4; |
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} |
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|
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if (length) |
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*length = len; |
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|
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psiconv_progress(lev+1,off+len-1,"End of mbm jumptable section " |
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"(total length: %08x)", len); |
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|
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return res; |
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} |
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|
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static int decode_byte(int lev, psiconv_u32 off, |
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psiconv_paint_data_section data, int *pixelnr, |
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psiconv_u8 byte, int bits_per_pixel, int linelen, |
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int *linepos,int picsize) |
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{ |
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int mask = (bits_per_pixel << 1) -1; |
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int i; |
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if (*linepos < (data->xsize + (8/bits_per_pixel) - 1) / (8/bits_per_pixel)) |
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for (i = 0; i < 8/bits_per_pixel; i ++) { |
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if ((i != 0) && ((*pixelnr % (data->xsize)) == 0)) { |
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psiconv_debug(lev+1,off,"Skipping padding: %02x",byte); |
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i = 8; |
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} else if (*pixelnr >= picsize) { |
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psiconv_warn(lev+1,off,"Corrupted picture data!"); |
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psiconv_debug(lev+1,off,"Trying to write a pixel too far"); |
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return -1; |
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} else { |
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data->red[*pixelnr] = data->green[*pixelnr] = data->blue[*pixelnr] = |
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((float) (byte & mask)) / ((1 << bits_per_pixel) -1); |
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psiconv_debug(lev+1,off,"Pixel %04x: (%04x,%04x) value %02x, color %f", |
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*pixelnr,*pixelnr % data->xsize,*pixelnr / data->xsize, byte&mask, data->red[*pixelnr]); |
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byte = byte >> bits_per_pixel; |
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(*pixelnr) ++; |
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} |
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} |
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else |
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psiconv_debug(lev+1,off,"Skipping padding byte"); |
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(*linepos) ++; |
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if (*linepos == linelen) |
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*linepos = 0; |
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return 0; |
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} |
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|
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|
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int psiconv_parse_paint_data_section(const psiconv_buffer buf,int lev, |
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psiconv_u32 off, int *length, |
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psiconv_paint_data_section *result) |
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{ |
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int res = 0; |
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int len = 0; |
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int read_err = 0; |
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psiconv_u32 size,offset,picsize,temp,datasize,pixelnr,datanr,linelen; |
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psiconv_u8 marker; |
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int i,leng; |
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psiconv_u32 bits_per_pixel,compression; |
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int linepos = 0; |
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|
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psiconv_progress(lev+1,off,"Going to read a paint data section"); |
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(*result) = malloc(sizeof(**result)); |
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|
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psiconv_progress(lev+2,off+len,"Going to read section size"); |
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size = psiconv_read_u32(buf,lev+2,off+len); |
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psiconv_debug(lev+2,off+len,"Section size: %08x",size); |
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len += 4; |
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|
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psiconv_progress(lev+2,off+len,"Going to read pixel data offset"); |
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offset = psiconv_read_u32(buf,lev+2,off+len); |
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if (offset != 0x28) { |
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psiconv_warn(lev+2,off+len, |
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"Paint data section data offset has unexpected value"); |
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psiconv_debug(lev+2,off+len, |
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"Data offset: read %08x, expected %08x",offset,0x28); |
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res = -1; |
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} |
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len += 4; |
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|
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psiconv_progress(lev+2,off+len,"Going to read picture X size"); |
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(*result)->xsize = psiconv_read_u32(buf,lev+2,off+len); |
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psiconv_debug(lev+2,off+len,"Picture X size: %08x:",(*result)->xsize); |
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len += 4; |
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|
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psiconv_progress(lev+2,off+len,"Going to read picture Y size"); |
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(*result)->ysize = psiconv_read_u32(buf,lev+2,off+len); |
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psiconv_debug(lev+2,off+len,"Picture Y size: %08x:",(*result)->ysize); |
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len += 4; |
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|
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picsize = (*result)->ysize * (*result)->xsize; |
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|
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psiconv_progress(lev+2,off+len,"Going to read the real picture x size"); |
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(*result)->pic_xsize = psiconv_read_length(buf,lev+2,off+len,&leng); |
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psiconv_debug(lev+2,off+len,"Picture x size: %f",(*result)->pic_xsize); |
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len += leng; |
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|
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psiconv_progress(lev+2,off+len,"Going to read the real picture y size"); |
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(*result)->pic_ysize = psiconv_read_length(buf,lev+2,off+len,&leng); |
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psiconv_debug(lev+2,off+len,"Picture y size: %f",(*result)->pic_ysize); |
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len += leng; |
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|
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psiconv_progress(lev+2,off+len,"Going to read the number of bits per pixel"); |
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bits_per_pixel=psiconv_read_u32(buf,lev+2,off+len); |
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if (bits_per_pixel > 8) { |
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psiconv_warn(lev+2,off+len,"Picture has too many colors"); |
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psiconv_debug(lev+2,off+len,"Read %d colorbits",bits_per_pixel); |
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res = -1; |
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bits_per_pixel = 2; |
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} |
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psiconv_debug(lev+2,off+len,"Bits per pixel: %d",bits_per_pixel); |
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len += 4; |
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|
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for (i = 0 ; i < 2; i++) { |
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temp = psiconv_read_u32(buf,lev+2,off+len); |
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if (temp != 00) { |
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psiconv_warn(lev+2,off+len, |
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"Paint data section prologue has unknown values"); |
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psiconv_debug(lev+2,off+len, |
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"offset %02x: read %08x, expected %08x",i,temp, 0x00); |
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res = -1; |
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} |
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len += 4; |
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} |
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|
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psiconv_progress(lev+2,off+len, |
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"Going to read whether RLE compression is used"); |
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compression=psiconv_read_u32(buf,lev+2,off+len); |
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if (compression > 1) { |
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psiconv_warn(lev+2,off+len,"Paint data section has unknown " |
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"compression type, assuming RLE"); |
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psiconv_debug(lev+2,off+len,"Read compression type %d",compression); |
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compression = 1; |
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} |
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psiconv_debug(lev+2,off+len,"Compression: %s",compression?"RLE":"none"); |
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|
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(*result)->red = malloc(sizeof(float) * picsize); |
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(*result)->green = malloc(sizeof(float) * picsize); |
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(*result)->blue = malloc(sizeof(float) * picsize); |
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len = offset; |
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datasize = size - len; |
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|
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psiconv_progress(lev+2,off+len,"Going to read the pixel data"); |
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pixelnr = 0; |
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datanr = 0; |
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if (!compression) { |
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linelen = datasize / (*result)->ysize; |
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psiconv_debug(lev+3,off+len,"Line length: %04x bytes",linelen); |
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while((datanr < datasize)) { |
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temp = psiconv_read_u8(buf,lev+2,off+len+datanr); |
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if (decode_byte(lev+3,off+len+datanr,*result,&pixelnr,temp,bits_per_pixel, |
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linelen,&linepos,picsize)) { |
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read_err = 1; |
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res = -1; |
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break; |
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} |
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datanr++; |
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} |
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} else { |
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psiconv_progress(lev+2,off+len,"First pass: determining line length"); |
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datanr = 0; |
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i = 0; |
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while (datanr < datasize) { |
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marker = psiconv_read_u8(buf,lev+3,off+len+datanr); |
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if (marker >= 0x80) { |
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datanr += 0x100 - marker + 1; |
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i += 0x100 - marker; |
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} else { |
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datanr += 2; |
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i += marker + 1; |
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} |
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} |
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linelen = i / (*result)->ysize; |
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datanr=0; |
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psiconv_debug(lev+2,off+len,"Linelen: %04x bytes",linelen); |
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while((datanr < datasize)) { |
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marker = psiconv_read_u8(buf,lev+3,off+len+datanr); |
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psiconv_debug(lev+3,off+len+datanr, |
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"Pixelnr %08x, Datanr %08x: Read marker %02x", |
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pixelnr,datanr,marker); |
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datanr ++; |
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if (marker >= 0x80) { |
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/* 0x100 - marker bytes of data follow */ |
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for (i = 0; i < 0x100-marker; i++,datanr++) { |
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if (datanr >= datasize) { |
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psiconv_warn(lev+3,off+len+datanr,"Corrupted picture data"); |
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psiconv_debug(lev+3,off+len+datanr, |
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"Picsize: %08x, Datasize: %08x, Pixelnr: %08x," |
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"Datanr: %08x, marker: %02x",picsize,datasize,pixelnr, |
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datanr,marker); |
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read_err = 1; |
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res = -1; |
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break; |
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} |
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temp = psiconv_read_u8(buf,lev+2,off+len+datanr); |
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if (decode_byte(lev+2,off+len+datanr,*result,&pixelnr,temp, |
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bits_per_pixel,linelen,&linepos,picsize)) { |
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res = -1; |
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read_err = 1; |
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break; |
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} |
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} |
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} else { |
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if (datanr >= datasize) { |
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psiconv_warn(lev+3,off+len+datanr,"Corrupted picture data"); |
251 |
psiconv_debug(lev+3,off+len+datanr, |
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"Picsize: %08x, Datasize: %08x, Pixelnr: %08x," |
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"Datanr: %08x, marker: %02x",picsize,datasize,pixelnr, |
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datanr,marker); |
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read_err = 1; |
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res = -1; |
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} else { |
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temp = psiconv_read_u8(buf,lev+3,off+len+datanr); |
259 |
for (i = 0; i <= marker; i++) { |
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if (decode_byte(lev+2,off+len+datanr,*result,&pixelnr,temp, |
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bits_per_pixel,linelen,&linepos,picsize)) { |
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read_err = 1; |
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res = -1; |
264 |
break; |
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} |
266 |
} |
267 |
datanr ++; |
268 |
} |
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} |
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} |
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} |
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|
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if (linepos >= ((*result)->xsize + (8/bits_per_pixel) - 1) / |
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(8/bits_per_pixel)) |
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datanr += (linelen - linepos); |
276 |
|
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if (!read_err && ((datanr != datasize) || (pixelnr != picsize))) { |
278 |
psiconv_warn(lev+2,off+len,"Corrupted picture data!"); |
279 |
psiconv_debug(lev+3,off+len+datanr, |
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"Picsize: %08x, Datasize: %08x, Pixelnr: %08x," |
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"Datanr: %08x",picsize,datasize,pixelnr,datanr); |
282 |
res = -1; |
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} |
284 |
|
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len += datanr; |
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|
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if (length) |
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*length = len; |
289 |
|
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psiconv_progress(lev+1,off+len-1,"End of paint data section " |
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"(total length: %08x)", len); |
292 |
|
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return res; |
294 |
} |
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|
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int psiconv_parse_sketch_section(const psiconv_buffer buf, int lev, |
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psiconv_u32 off, int *length, int is_object, |
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psiconv_sketch_section *result) |
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{ |
300 |
int res=0; |
301 |
int len=0; |
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psiconv_u32 temp; |
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int leng; |
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int i; |
305 |
|
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psiconv_progress(lev+1,off,"Going to read the sketch section"); |
307 |
*result = malloc(sizeof(**result)); |
308 |
|
309 |
if (!is_object) { |
310 |
psiconv_progress(lev+2,off+len,"Going to read the form hor. size"); |
311 |
(*result)->form_xsize = psiconv_read_u16(buf,lev+2,off + len); |
312 |
psiconv_debug(lev+2,off+len,"Form hor. size: %04x", |
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(*result)->form_xsize); |
314 |
len += 0x02; |
315 |
psiconv_progress(lev+2,off+len,"Going to read the form ver. size"); |
316 |
(*result)->form_ysize = psiconv_read_u16(buf,lev+2,off + len); |
317 |
psiconv_debug(lev+2,off+len,"Form ver. size: %04x", |
318 |
(*result)->form_ysize); |
319 |
len += 0x02; |
320 |
psiconv_progress(lev+2,off+len,"Going to read the picture hor. offset"); |
321 |
(*result)->picture_x_offset = psiconv_read_u16(buf,lev+2,off + len); |
322 |
psiconv_debug(lev+2,off+len,"Picture hor. offset: %04x", |
323 |
(*result)->picture_x_offset); |
324 |
len += 0x02; |
325 |
psiconv_progress(lev+2,off+len,"Going to read the picture ver. offset"); |
326 |
(*result)->picture_y_offset = psiconv_read_u16(buf,lev+2,off + len); |
327 |
psiconv_debug(lev+2,off+len,"Picture ver. offset: %04x", |
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(*result)->picture_y_offset); |
329 |
len += 0x02; |
330 |
psiconv_progress(lev+2,off+len,"Going to skip 5 words of zeros"); |
331 |
for (i = 0; i < 5; i++) { |
332 |
temp = psiconv_read_u16(buf,lev+2,off+len); |
333 |
if (temp != 0) { |
334 |
psiconv_warn(lev+2,off+len, |
335 |
"Unexpected value in sketch section preamble"); |
336 |
psiconv_debug(lev+2,off+len,"Word %d: Read %04x, expected %04x",i, |
337 |
temp,0); |
338 |
res = -1; |
339 |
} |
340 |
off += 0x02; |
341 |
} |
342 |
} else { |
343 |
psiconv_progress(lev+2,off+len,"Going to read the displayed hor. size"); |
344 |
(*result)->picture_xsize = psiconv_read_u16(buf,lev+2,off + len); |
345 |
psiconv_debug(lev+2,off+len,"Displayed hor. size: %04x", |
346 |
(*result)->picture_xsize); |
347 |
len += 0x02; |
348 |
psiconv_progress(lev+2,off+len,"Going to read the displayed ver. size"); |
349 |
(*result)->picture_ysize = psiconv_read_u16(buf,lev+2,off + len); |
350 |
psiconv_debug(lev+2,off+len,"Displayed ver. size: %04x", |
351 |
(*result)->picture_ysize); |
352 |
len += 0x02; |
353 |
|
354 |
psiconv_progress(lev+2,off+len,"Going to skip 2 words of zeros"); |
355 |
for (i = 0; i < 2; i++) { |
356 |
temp = psiconv_read_u16(buf,lev+2,off+len); |
357 |
if (temp != 0) { |
358 |
psiconv_warn(lev+2,off+len, |
359 |
"Unexpected value in sketch section preamble"); |
360 |
psiconv_debug(lev+2,off+len,"Word %d: Read %04x, expected %04x",i, |
361 |
temp,0); |
362 |
res = -1; |
363 |
} |
364 |
off += 0x02; |
365 |
} |
366 |
psiconv_progress(lev+2,off+len,"Going to read the picture hor. offset"); |
367 |
(*result)->picture_x_offset = psiconv_read_u16(buf,lev+2,off + len); |
368 |
psiconv_debug(lev+2,off+len,"Picture hor. offset: %04x", |
369 |
(*result)->picture_x_offset); |
370 |
len += 0x02; |
371 |
psiconv_progress(lev+2,off+len,"Going to read the picture ver. offset"); |
372 |
(*result)->picture_y_offset = psiconv_read_u16(buf,lev+2,off + len); |
373 |
psiconv_debug(lev+2,off+len,"Picture ver. offset: %04x", |
374 |
(*result)->picture_y_offset); |
375 |
len += 0x02; |
376 |
psiconv_progress(lev+2,off+len,"Going to read the form hor. size"); |
377 |
(*result)->form_xsize = psiconv_read_u16(buf,lev+2,off + len); |
378 |
psiconv_debug(lev+2,off+len,"Form hor. size: %04x", |
379 |
(*result)->form_xsize); |
380 |
len += 0x02; |
381 |
psiconv_progress(lev+2,off+len,"Going to read the form ver. size"); |
382 |
(*result)->form_ysize = psiconv_read_u16(buf,lev+2,off + len); |
383 |
psiconv_debug(lev+2,off+len,"Form ver. size: %04x", |
384 |
(*result)->form_ysize); |
385 |
len += 0x02; |
386 |
psiconv_progress(lev+2,off+len,"Going to skip 1 zero word"); |
387 |
temp = psiconv_read_u16(buf,lev+2,off+len); |
388 |
if (temp != 0) { |
389 |
psiconv_warn(lev+2,off+len, |
390 |
"Unexpected value in sketch section preamble"); |
391 |
psiconv_debug(lev+2,off+len,"Read %04x, expected %04x",i, temp,0); |
392 |
res = -1; |
393 |
} |
394 |
off += 0x02; |
395 |
} |
396 |
|
397 |
psiconv_progress(lev+2,off+len,"Going to read the picture data"); |
398 |
res |= psiconv_parse_paint_data_section(buf,lev+2,off+len,&leng, |
399 |
&((*result)->picture)); |
400 |
off += leng; |
401 |
if (!is_object) { |
402 |
(*result)->picture_xsize = (*result)->picture->xsize; |
403 |
(*result)->picture_ysize = (*result)->picture->ysize; |
404 |
} |
405 |
|
406 |
psiconv_progress(lev+2,off+len,"Going to read the hor. magnification"); |
407 |
(*result)->magnification_x = psiconv_read_u16(buf,lev+2,off + len) / 1000.0; |
408 |
psiconv_debug(lev+2,off+len,"Form hor. magnification: %f", |
409 |
(*result)->magnification_x); |
410 |
len += 0x02; |
411 |
psiconv_progress(lev+2,off+len,"Going to read the ver. magnification"); |
412 |
(*result)->magnification_y = psiconv_read_u16(buf,lev+2,off + len) / 1000.0; |
413 |
psiconv_debug(lev+2,off+len,"Form ver. magnification: %f", |
414 |
(*result)->magnification_y); |
415 |
len += 0x02; |
416 |
|
417 |
psiconv_progress(lev+2,off+len,"Going to read the left cut"); |
418 |
temp = psiconv_read_u32(buf,lev+2,off + len); |
419 |
(*result)->cut_left = (temp * 6.0) / (*result)->picture_xsize; |
420 |
psiconv_debug(lev+2,off+len,"Left cut: raw %08x, real: %f", |
421 |
temp,(*result)->cut_left); |
422 |
len += 0x04; |
423 |
psiconv_progress(lev+2,off+len,"Going to read the right cut"); |
424 |
temp = psiconv_read_u32(buf,lev+2,off + len); |
425 |
(*result)->cut_right = (temp * 6.0) / (*result)->picture_xsize; |
426 |
psiconv_debug(lev+2,off+len,"Right cut: raw %08x, real: %f", |
427 |
temp,(*result)->cut_right); |
428 |
len += 0x04; |
429 |
psiconv_progress(lev+2,off+len,"Going to read the top cut"); |
430 |
temp = psiconv_read_u32(buf,lev+2,off + len); |
431 |
(*result)->cut_top = (temp * 6.0) / (*result)->picture_ysize; |
432 |
psiconv_debug(lev+2,off+len,"Top cut: raw %08x, real: %f", |
433 |
temp,(*result)->cut_top); |
434 |
len += 0x04; |
435 |
psiconv_progress(lev+2,off+len,"Going to read the bottom cut"); |
436 |
temp = psiconv_read_u32(buf,lev+2,off + len); |
437 |
(*result)->cut_bottom = (temp * 6.0) / (*result)->picture_ysize; |
438 |
psiconv_debug(lev+2,off+len,"Bottom cut: raw %08x, real: %f", |
439 |
temp,(*result)->cut_bottom); |
440 |
len += 0x04; |
441 |
|
442 |
if (length) |
443 |
*length = len; |
444 |
|
445 |
psiconv_progress(lev,off+len-1, |
446 |
"End of sketch section (total length: %08x)", len); |
447 |
|
448 |
return res; |
449 |
} |
450 |
|