read_quant_tables (j_compress_ptr cinfo, char * filename, boolean force_baseline) /* Read a set of quantization tables from the specified file. * The file is plain ASCII text: decimal numbers with whitespace between. * Comments preceded by '#' may be included in the file. * There may be one to NUM_QUANT_TBLS tables in the file, each of 64 values. * The tables are implicitly numbered 0,1,etc. * NOTE: does not affect the qslots mapping, which will default to selecting * table 0 for luminance (or primary) components, 1 for chrominance components. * You must use -qslots if you want a different component->table mapping. */ { FILE * fp; int tblno, i, termchar; long val; unsigned int table[DCTSIZE2]; if ((fp = fopen(filename, "r")) == NULL) { fprintf(stderr, "Can't open table file %s\n", filename); return FALSE; } tblno = 0; while (read_text_integer(fp, &val, &termchar)) { /* read 1st element of table */ if (tblno >= NUM_QUANT_TBLS) { fprintf(stderr, "Too many tables in file %s\n", filename); fclose(fp); return FALSE; } table[0] = (unsigned int) val; for (i = 1; i < DCTSIZE2; i++) { if (! read_text_integer(fp, &val, &termchar)) { fprintf(stderr, "Invalid table data in file %s\n", filename); fclose(fp); return FALSE; } table[i] = (unsigned int) val; } jpeg_add_quant_table(cinfo, tblno, table, cinfo->q_scale_factor[tblno], force_baseline); tblno++; } if (termchar != EOF) { fprintf(stderr, "Non-numeric data in file %s\n", filename); fclose(fp); return FALSE; } fclose(fp); return TRUE; }
read_scan_integer (FILE * file, long * result, int * termchar) /* Variant of read_text_integer that always looks for a non-space termchar; * this simplifies parsing of punctuation in scan scripts. */ { register int ch; if (! read_text_integer(file, result, termchar)) return FALSE; ch = *termchar; while (ch != EOF && isspace(ch)) ch = text_getc(file); if (isdigit(ch)) { /* oops, put it back */ if (ungetc(ch, file) == EOF) return FALSE; ch = ' '; } else { /* Any separators other than ';' and ':' are ignored; * this allows user to insert commas, etc, if desired. */ if (ch != EOF && ch != ';' && ch != ':') ch = ' '; } *termchar = ch; return TRUE; }
read_quant_tables (j_compress_ptr cinfo, char * filename, int scale_factor, boolean force_baseline) /* Read a set of quantization tables from the specified file. * The file is plain ASCII text: decimal numbers with whitespace between. * Comments preceded by '#' may be included in the file. * There may be one to NUM_QUANT_TBLS tables in the file, each of 64 values. * The tables are implicitly numbered 0,1,etc. * NOTE: does not affect the qslots mapping, which will default to selecting * table 0 for luminance (or primary) components, 1 for chrominance components. * You must use -qslots if you want a different component->table mapping. */ { FILE * fp; __boundcheck_metadata_store((void *)(&fp),(void *)((size_t)(&fp)+sizeof(fp)*8-1)); int tblno; __boundcheck_metadata_store((void *)(&tblno),(void *)((size_t)(&tblno)+sizeof(tblno)*8-1)); int i; __boundcheck_metadata_store((void *)(&i),(void *)((size_t)(&i)+sizeof(i)*8-1)); int termchar; __boundcheck_metadata_store((void *)(&termchar),(void *)((size_t)(&termchar)+sizeof(termchar)*8-1)); long val; __boundcheck_metadata_store((void *)(&val),(void *)((size_t)(&val)+sizeof(val)*8-1)); unsigned int table[DCTSIZE2];__boundcheck_metadata_store(&table[0],&table[64-1]); if ((fp = fopen(filename, "r")) == NULL) { fprintf(stderr, "Can't open table file %s\n", filename); return FALSE; } tblno = 0; while (read_text_integer(fp, &val, &termchar)) { /* read 1st element of table */ if (tblno >= NUM_QUANT_TBLS) { fprintf(stderr, "Too many tables in file %s\n", filename); fclose(fp); return FALSE; } table[_RV_insert_check(0,64,102,5,"read_quant_tables",0)] = (unsigned int) val; for (i = 1; i < DCTSIZE2; i++) { if (! read_text_integer(fp, &val, &termchar)) { fprintf(stderr, "Invalid table data in file %s\n", filename); fclose(fp); return FALSE; } table[_RV_insert_check(0,64,109,7,"read_quant_tables",i)] = (unsigned int) val; } jpeg_add_quant_table(cinfo, tblno, table, scale_factor, force_baseline); tblno++; } if (termchar != EOF) { fprintf(stderr, "Non-numeric data in file %s\n", filename); fclose(fp); return FALSE; } fclose(fp); return TRUE; }