1 /******************************************************************************
2 ** Filename: flexfx.c
3 ** Purpose: Interface to flexible feature extractor.
4 ** Author: Dan Johnson
5 ** History: Wed May 23 13:45:10 1990, DSJ, Created.
6 **
7 ** (c) Copyright Hewlett-Packard Company, 1988.
8 ** Licensed under the Apache License, Version 2.0 (the "License");
9 ** you may not use this file except in compliance with the License.
10 ** You may obtain a copy of the License at
11 ** http://www.apache.org/licenses/LICENSE-2.0
12 ** Unless required by applicable law or agreed to in writing, software
13 ** distributed under the License is distributed on an "AS IS" BASIS,
14 ** WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
15 ** See the License for the specific language governing permissions and
16 ** limitations under the License.
17 ******************************************************************************/
18 /**----------------------------------------------------------------------------
19 Include Files and Type Defines
20 ----------------------------------------------------------------------------**/
21 #include "flexfx.h"
22 #include "featdefs.h"
23 #include "emalloc.h"
24 #include <string.h>
25 #include <stdio.h>
26
27 /**----------------------------------------------------------------------------
28 Public Code
29 ----------------------------------------------------------------------------**/
30 /*---------------------------------------------------------------------------*/
ExtractFlexFeatures(TBLOB * Blob,LINE_STATS * LineStats)31 CHAR_DESC ExtractFlexFeatures(TBLOB *Blob, LINE_STATS *LineStats) {
32 /*
33 ** Parameters:
34 ** Blob blob to extract features from
35 ** LineStats statistics about text line Blob is on
36 ** Globals: none
37 ** Operation: Allocate a new character descriptor and fill it in by
38 ** calling all feature extractors which are enabled.
39 ** Return: Structure containing features extracted from Blob.
40 ** Exceptions: none
41 ** History: Wed May 23 13:46:22 1990, DSJ, Created.
42 */
43 int Type;
44 CHAR_DESC CharDesc;
45
46 CharDesc = NewCharDescription ();
47
48 for (Type = 0; Type < CharDesc->NumFeatureSets; Type++)
49 if (FeatureDefs.FeatureExtractors[Type] != NULL &&
50 FeatureDefs.FeatureExtractors[Type]->Extractor != NULL) {
51 CharDesc->FeatureSets[Type] =
52 (FeatureDefs.FeatureExtractors[Type])->Extractor(Blob, LineStats);
53 if (CharDesc->FeatureSets[Type] == NULL) {
54 FreeCharDescription(CharDesc);
55 return NULL;
56 }
57 }
58
59 return (CharDesc);
60
61 } /* ExtractFlexFeatures */
62