author | pohly <pohly> | 2004-08-24 20:52:45 (UTC) |
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committer | pohly <pohly> | 2004-08-24 20:52:45 (UTC) |
commit | 73253e93327cf4ef0932de1b4afb56af22a0f37e (patch) (side-by-side diff) | |
tree | 1c9a7a6dd3341e036a894d348a3372525d29acec /noncore/apps/opie-reader/ppm_expander.cpp | |
parent | e90847c784c48bd21bf8768cb38edb853b832697 (diff) | |
download | opie-73253e93327cf4ef0932de1b4afb56af22a0f37e.zip opie-73253e93327cf4ef0932de1b4afb56af22a0f37e.tar.gz opie-73253e93327cf4ef0932de1b4afb56af22a0f37e.tar.bz2 |
updated source to opie-reader 0.7g
Diffstat (limited to 'noncore/apps/opie-reader/ppm_expander.cpp') (more/less context) (ignore whitespace changes)
-rw-r--r-- | noncore/apps/opie-reader/ppm_expander.cpp | 16 |
1 files changed, 12 insertions, 4 deletions
diff --git a/noncore/apps/opie-reader/ppm_expander.cpp b/noncore/apps/opie-reader/ppm_expander.cpp index fe2745c..ea5b955 100644 --- a/noncore/apps/opie-reader/ppm_expander.cpp +++ b/noncore/apps/opie-reader/ppm_expander.cpp @@ -1,22 +1,23 @@ /* * Interface pour le programme de compression * (c) 1995 Fabrice Bellard */ #include <stdlib.h> //#include <unistd.h> #include <stdio.h> #include <string.h> #include <time.h> +#include "static.h" /*************************************************************************** * Interface avec les routines de compression */ #define METHOD_NB 2 /* nombre total de méthodes de compression */ #define METHOD_STORE 0 #define METHOD_PPM 1 #define DEFAULT_SUFFIX ".st" /* extension par défault */ @@ -56,53 +57,60 @@ int ppm_expander::home() unsigned char header[STAT_MAGIC_SIZE]; size_t len=fread(header,1,STAT_MAGIC_SIZE,my_file_in); if (strncmp((char*)header,stat_magic,STAT_MAGIC_SIZE)!=0) { return 1; } if (len!=(STAT_MAGIC_SIZE)) { return 1; } if (fread(&maxnode,sizeof(maxnode),1,my_file_in) != 1) return 1; if (fread(&blocksize,sizeof(blocksize),1,my_file_in) != 1) return 1; if (fread(&numblocks,sizeof(numblocks),1,my_file_in) != 1) return 1; //fprintf(stderr,"<%u,%u,%u>\n",maxnode,blocksize,numblocks); - int err = locate(0,0); + locate(0,0); outbytes = 0; - return err; + return 0; } void ppm_expander::locate(unsigned int n) { locate(n/blocksize, n%blocksize); outbytes = n; } -int ppm_expander::locate(unsigned short block, unsigned int n) +void ppm_expander::locate(unsigned short block, unsigned int n) { if (needppmend) { ppm.PPM_End(); needppmend = false; } size_t fpos; fseek(my_file_in,STAT_MAGIC_SIZE+sizeof(maxnode)+sizeof(blocksize)+sizeof(numblocks)+block*sizeof(fpos),SEEK_SET); - if (fread(&fpos,sizeof(fpos),1,my_file_in) != 1) return 1; + fread(&fpos,sizeof(fpos),1,my_file_in); fseek(my_file_in,fpos,SEEK_SET); ppm.arith.Arith_DecodeInit(my_read_buf,buf_in,bufsize); int err=ppm.PPM_Init(maxnode); needppmend = true; curblock = block; for (int i = 0; i < n; i++) getch(); } int ppm_expander::getch() { if (curblock >= numblocks) return EOF; int c=ppm.PPM_Decode(); if (c == SYM_EOF) { if (++curblock >= numblocks) return EOF; locate(curblock,0); c = ppm.PPM_Decode(); } outbytes++; return (c==SYM_EOF) ? EOF : c; } + +#ifndef __STATIC +extern "C" +{ + CExpander* newcodec() { return new ppm_expander; } +} +#endif |