|
1
|
package eu.etaxonomy.cdm.model.media;
|
|
2
|
|
|
3
|
import java.util.ArrayList;
|
|
4
|
import java.util.HashMap;
|
|
5
|
import java.util.LinkedHashMap;
|
|
6
|
import java.util.LinkedHashSet;
|
|
7
|
import java.util.List;
|
|
8
|
import java.util.Map;
|
|
9
|
import java.util.NoSuchElementException;
|
|
10
|
import java.util.Set;
|
|
11
|
import java.util.SortedMap;
|
|
12
|
import java.util.TreeMap;
|
|
13
|
import java.util.regex.Pattern;
|
|
14
|
|
|
15
|
import org.apache.log4j.Logger;
|
|
16
|
|
|
17
|
public class MediaUtils {
|
|
18
|
|
|
19
|
private static final Logger logger = Logger.getLogger(MediaUtils.class);
|
|
20
|
|
|
21
|
/**
|
|
22
|
* @param representationPartType TODO
|
|
23
|
* @param size
|
|
24
|
* @param height
|
|
25
|
* @param widthOrDuration
|
|
26
|
* @param mimeTypeRegexes
|
|
27
|
* @return
|
|
28
|
*
|
|
29
|
*
|
|
30
|
*/
|
|
31
|
public static MediaRepresentation findBestMatchingRepresentation(Media media, Class<? extends MediaRepresentationPart> representationPartType, Integer size, Integer height, Integer widthOrDuration, String[] mimeTypes){
|
|
32
|
// find best matching representations of each media
|
|
33
|
SortedMap<Integer, MediaRepresentation> prefRepresentations
|
|
34
|
= filterAndOrderMediaRepresentations(media.getRepresentations(), null, mimeTypes, size, widthOrDuration, height);
|
|
35
|
try {
|
|
36
|
// take first one and remove all other representations
|
|
37
|
MediaRepresentation prefOne = prefRepresentations.get(prefRepresentations.firstKey());
|
|
38
|
|
|
39
|
return prefOne;
|
|
40
|
|
|
41
|
} catch (NoSuchElementException nse) {
|
|
42
|
/* IGNORE */
|
|
43
|
}
|
|
44
|
return null;
|
|
45
|
}
|
|
46
|
|
|
47
|
/**
|
|
48
|
* Return the first {@link MediaRepresentationPart} found for the given {@link Media}
|
|
49
|
* or <code>null</code> otherwise.
|
|
50
|
* @param media the media which is searched for the first part
|
|
51
|
* @return the first part found or <code>null</code>
|
|
52
|
*/
|
|
53
|
public static MediaRepresentationPart getFirstMediaRepresentationPart(Media media){
|
|
54
|
if(media==null){
|
|
55
|
return null;
|
|
56
|
}
|
|
57
|
MediaRepresentationPart mediaRepresentationPart = null;
|
|
58
|
Set<MediaRepresentation> representations = media.getRepresentations();
|
|
59
|
if(representations!=null && representations.size()>0){
|
|
60
|
MediaRepresentation mediaRepresentation = representations.iterator().next();
|
|
61
|
List<MediaRepresentationPart> parts = mediaRepresentation.getParts();
|
|
62
|
if(parts!=null && parts.size()>0){
|
|
63
|
mediaRepresentationPart = parts.iterator().next();
|
|
64
|
}
|
|
65
|
}
|
|
66
|
return mediaRepresentationPart;
|
|
67
|
}
|
|
68
|
|
|
69
|
/**
|
|
70
|
* Creates one single {@link MediaRepresentationPart} for the given {@link Media}
|
|
71
|
* if it does not already exists. Otherwise the first part found is returned.<br>
|
|
72
|
* @param media the media for which the representation part should be created
|
|
73
|
* @return the first or newly created representation part
|
|
74
|
*/
|
|
75
|
public static MediaRepresentationPart initFirstMediaRepresentationPart(Media media, boolean isImage) {
|
|
76
|
MediaRepresentationPart mediaRepresentationPart = getFirstMediaRepresentationPart(media);
|
|
77
|
if(mediaRepresentationPart==null){
|
|
78
|
Set<MediaRepresentation> representations = media.getRepresentations();
|
|
79
|
if(representations!=null && representations.size()>0){
|
|
80
|
MediaRepresentation mediaRepresentation = representations.iterator().next();
|
|
81
|
if(isImage){
|
|
82
|
mediaRepresentationPart = ImageFile.NewInstance(null, null);
|
|
83
|
}
|
|
84
|
else{
|
|
85
|
mediaRepresentationPart = MediaRepresentationPart.NewInstance(null, null);
|
|
86
|
}
|
|
87
|
mediaRepresentation.addRepresentationPart(mediaRepresentationPart);
|
|
88
|
}
|
|
89
|
else{
|
|
90
|
if(isImage){
|
|
91
|
mediaRepresentationPart = ImageFile.NewInstance(null, null);
|
|
92
|
}
|
|
93
|
else{
|
|
94
|
mediaRepresentationPart = MediaRepresentationPart.NewInstance(null, null);
|
|
95
|
}
|
|
96
|
|
|
97
|
MediaRepresentation mediaRepresentation = MediaRepresentation.NewInstance();
|
|
98
|
mediaRepresentation.addRepresentationPart(mediaRepresentationPart);
|
|
99
|
media.addRepresentation(mediaRepresentation);
|
|
100
|
}
|
|
101
|
}
|
|
102
|
return mediaRepresentationPart;
|
|
103
|
}
|
|
104
|
|
|
105
|
|
|
106
|
/**
|
|
107
|
* Filters the given List of Media by the supplied filter parameters <code>representationPartType</code>,
|
|
108
|
* <code>mimeTypes</code>, <code>sizeTokens</code>, <code>widthOrDuration</code>, <code>height</code>, <code>size</code>.
|
|
109
|
* Only best matching MediaRepresentation remains attached to the Media entities.
|
|
110
|
* A Media entity may be completely omitted in the resulting list if {@link #filterAndOrderMediaRepresentations(Set, Class, String[], Integer, Integer, Integer)}
|
|
111
|
* is not returning any matching representation. This can be the case if a <code>representationPartType</code> is supplied.
|
|
112
|
* <p>
|
|
113
|
* In order to prevent the media entities returned by this method from being persisted accidentally the resulting list contains cloned versions of the originally
|
|
114
|
* supplied media entities, which have the same UUIDs as the original ones.
|
|
115
|
*
|
|
116
|
* @param mediaList
|
|
117
|
* @param representationPartType any subclass of {@link MediaRepresentationPart}
|
|
118
|
* @param mimeTypes
|
|
119
|
* @param sizeTokens
|
|
120
|
* @param widthOrDuration
|
|
121
|
* @param height
|
|
122
|
* @param size
|
|
123
|
* @return
|
|
124
|
*/
|
|
125
|
public static Map<Media, MediaRepresentation> findPreferredMedia(List<Media> mediaList,
|
|
126
|
Class<? extends MediaRepresentationPart> representationPartType, String[] mimeTypes, String[] sizeTokens,
|
|
127
|
Integer widthOrDuration, Integer height, Integer size) {
|
|
128
|
|
|
129
|
if(mimeTypes != null) {
|
|
130
|
for(int i=0; i<mimeTypes.length; i++){
|
|
131
|
mimeTypes[i] = mimeTypes[i].replace(':', '/');
|
|
132
|
}
|
|
133
|
}
|
|
134
|
|
|
135
|
if(sizeTokens != null) {
|
|
136
|
if(sizeTokens.length > 0){
|
|
137
|
try {
|
|
138
|
size = Integer.valueOf(sizeTokens[0]);
|
|
139
|
} catch (NumberFormatException nfe) {
|
|
140
|
/* IGNORE */
|
|
141
|
}
|
|
142
|
}
|
|
143
|
if(sizeTokens.length > 1){
|
|
144
|
try {
|
|
145
|
widthOrDuration = Integer.valueOf(sizeTokens[1]);
|
|
146
|
} catch (NumberFormatException nfe) {
|
|
147
|
/* IGNORE */
|
|
148
|
}
|
|
149
|
}
|
|
150
|
if(sizeTokens.length > 2){
|
|
151
|
try {
|
|
152
|
height = Integer.valueOf(sizeTokens[2]);
|
|
153
|
} catch (NumberFormatException nfe) {
|
|
154
|
/* IGNORE */
|
|
155
|
}
|
|
156
|
}
|
|
157
|
}
|
|
158
|
|
|
159
|
Map<Media, MediaRepresentation> returnMediaList;
|
|
160
|
if(mediaList != null){
|
|
161
|
returnMediaList = new LinkedHashMap<>(mediaList.size());
|
|
162
|
for(Media media : mediaList){
|
|
163
|
|
|
164
|
Set<MediaRepresentation> candidateRepresentations = new LinkedHashSet<>();
|
|
165
|
candidateRepresentations.addAll(media.getRepresentations());
|
|
166
|
|
|
167
|
SortedMap<Integer, MediaRepresentation> prefRepresentations
|
|
168
|
= filterAndOrderMediaRepresentations(candidateRepresentations, representationPartType, mimeTypes, size, widthOrDuration, height);
|
|
169
|
try {
|
|
170
|
if(prefRepresentations.size() > 0){
|
|
171
|
// Media.representations is a set
|
|
172
|
// so it cannot retain the sorting which has been found by filterAndOrderMediaRepresentations()
|
|
173
|
// thus we take first one and remove all other representations
|
|
174
|
returnMediaList.put(media, prefRepresentations.get(prefRepresentations.firstKey()));
|
|
175
|
}
|
|
176
|
} catch (NoSuchElementException nse) {
|
|
177
|
logger.debug(nse);
|
|
178
|
/* IGNORE */
|
|
179
|
}
|
|
180
|
|
|
181
|
}
|
|
182
|
}
|
|
183
|
else{
|
|
184
|
returnMediaList = new HashMap<>();
|
|
185
|
}
|
|
186
|
return returnMediaList;
|
|
187
|
}
|
|
188
|
|
|
189
|
/**
|
|
190
|
* @param media
|
|
191
|
* @param mimeTypeRegexes
|
|
192
|
* @param size
|
|
193
|
* @param widthOrDuration
|
|
194
|
* @param height
|
|
195
|
* @return
|
|
196
|
*
|
|
197
|
* TODO move into a media utils class
|
|
198
|
* TODO implement the quality filter
|
|
199
|
|
|
200
|
public static SortedMap<String, MediaRepresentation> orderMediaRepresentations(Media media, String[] mimeTypeRegexes,
|
|
201
|
Integer size, Integer widthOrDuration, Integer height) {
|
|
202
|
SortedMap<String, MediaRepresentation> prefRepr = new TreeMap<String, MediaRepresentation>();
|
|
203
|
for (String mimeTypeRegex : mimeTypeRegexes) {
|
|
204
|
// getRepresentationByMimeType
|
|
205
|
Pattern mimeTypePattern = Pattern.compile(mimeTypeRegex);
|
|
206
|
int representationCnt = 0;
|
|
207
|
for (MediaRepresentation representation : media.getRepresentations()) {
|
|
208
|
int dwa = 0;
|
|
209
|
if(representation.getMimeType() == null){
|
|
210
|
prefRepr.put((dwa + representationCnt++) + "_NA", representation);
|
|
211
|
} else {
|
|
212
|
Matcher mather = mimeTypePattern.matcher(representation.getMimeType());
|
|
213
|
if (mather.matches()) {
|
|
214
|
|
|
215
|
/* TODO the quality filter part is being skipped
|
|
216
|
* // look for representation with the best matching parts
|
|
217
|
for (MediaRepresentationPart part : representation.getParts()) {
|
|
218
|
if (part instanceof ImageFile) {
|
|
219
|
ImageFile image = (ImageFile) part;
|
|
220
|
int dw = image.getWidth() * image.getHeight() - height * widthOrDuration;
|
|
221
|
if (dw < 0) {
|
|
222
|
dw *= -1;
|
|
223
|
}
|
|
224
|
dwa += dw;
|
|
225
|
}
|
|
226
|
dwa = (representation.getParts().size() > 0 ? dwa / representation.getParts().size() : 0);
|
|
227
|
}
|
|
228
|
prefRepr.put((dwa + representationCnt++) + '_' + representation.getMimeType(), representation);
|
|
229
|
|
|
230
|
// preferred mime type found => end loop
|
|
231
|
break;
|
|
232
|
}
|
|
233
|
}
|
|
234
|
}
|
|
235
|
}
|
|
236
|
return prefRepr;
|
|
237
|
}
|
|
238
|
|
|
239
|
*/
|
|
240
|
/**
|
|
241
|
* @param mimeTypeRegexes
|
|
242
|
* @param size
|
|
243
|
* @param widthOrDuration
|
|
244
|
* @param height
|
|
245
|
* @return
|
|
246
|
*
|
|
247
|
*
|
|
248
|
*/
|
|
249
|
private static SortedMap<Integer, MediaRepresentation> filterAndOrderMediaRepresentations(
|
|
250
|
Set<MediaRepresentation> mediaRepresentations,
|
|
251
|
Class<? extends MediaRepresentationPart> representationPartType, String[] mimeTypeRegexes,
|
|
252
|
Integer size, Integer widthOrDuration, Integer height) {
|
|
253
|
|
|
254
|
SortedMap<Integer, MediaRepresentation> prefRepr = new TreeMap<>();
|
|
255
|
|
|
256
|
|
|
257
|
size = (size == null ? new Integer(0) : size );
|
|
258
|
widthOrDuration = (widthOrDuration == null ? new Integer(0) : widthOrDuration);
|
|
259
|
height = (height == null ? new Integer(0) : height);
|
|
260
|
mimeTypeRegexes = (mimeTypeRegexes == null ? new String[]{".*"} : mimeTypeRegexes);
|
|
261
|
|
|
262
|
for (String mimeTypeRegex : mimeTypeRegexes) {
|
|
263
|
// getRepresentationByMimeType
|
|
264
|
Pattern mimeTypePattern = Pattern.compile(mimeTypeRegex);
|
|
265
|
int representationCnt = 0;
|
|
266
|
for (MediaRepresentation representation : mediaRepresentations) {
|
|
267
|
|
|
268
|
List<MediaRepresentationPart> matchingParts = new ArrayList<>();
|
|
269
|
|
|
270
|
|
|
271
|
// check MIME type
|
|
272
|
boolean mimeTypeOK = representation.getMimeType() == null
|
|
273
|
|| mimeTypePattern.matcher(representation.getMimeType()).matches();
|
|
274
|
logger.debug("mimeTypeOK: " + Boolean.valueOf(mimeTypeOK).toString());
|
|
275
|
|
|
276
|
int dwa = 0;
|
|
277
|
|
|
278
|
|
|
279
|
//first the size is used for comparison
|
|
280
|
for (MediaRepresentationPart part : representation.getParts()) {
|
|
281
|
|
|
282
|
// check representationPartType
|
|
283
|
boolean representationPartTypeOK = representationPartType == null
|
|
284
|
|| part.getClass().isAssignableFrom(representationPartType);
|
|
285
|
logger.debug("representationPartTypeOK: " + Boolean.valueOf(representationPartTypeOK).toString());
|
|
286
|
|
|
287
|
if ( !(representationPartTypeOK && mimeTypeOK) ) {
|
|
288
|
continue;
|
|
289
|
}
|
|
290
|
|
|
291
|
logger.debug(part + " matches");
|
|
292
|
matchingParts.add(part);
|
|
293
|
|
|
294
|
if (part.getSize()!= null){
|
|
295
|
int sizeOfPart = part.getSize();
|
|
296
|
int distance = sizeOfPart - size;
|
|
297
|
if (distance < 0) {
|
|
298
|
distance*= -1;
|
|
299
|
}
|
|
300
|
dwa += distance;
|
|
301
|
}
|
|
302
|
|
|
303
|
//if height and width/duration is defined, add this information, too
|
|
304
|
if (height != 0 && widthOrDuration != 0){
|
|
305
|
int durationWidthWeight = 0;
|
|
306
|
|
|
307
|
if (part instanceof ImageFile) {
|
|
308
|
ImageFile image = (ImageFile) part;
|
|
309
|
durationWidthWeight = image.getWidth() * image.getHeight() - height * widthOrDuration;
|
|
310
|
}
|
|
311
|
else if (part instanceof MovieFile){
|
|
312
|
MovieFile movie = (MovieFile) part;
|
|
313
|
durationWidthWeight = movie.getDuration() - widthOrDuration;
|
|
314
|
|
|
315
|
}else if (part instanceof AudioFile){
|
|
316
|
AudioFile audio = (AudioFile) part;
|
|
317
|
durationWidthWeight = audio.getDuration() - widthOrDuration;
|
|
318
|
|
|
319
|
}
|
|
320
|
if (durationWidthWeight < 0) {
|
|
321
|
durationWidthWeight *= -1;
|
|
322
|
}
|
|
323
|
dwa += durationWidthWeight;
|
|
324
|
|
|
325
|
}
|
|
326
|
} // loop parts
|
|
327
|
logger.debug("matchingParts.size():" + matchingParts.size());
|
|
328
|
if(matchingParts.size() > 0 ){
|
|
329
|
dwa = dwa / matchingParts.size();
|
|
330
|
|
|
331
|
representation.getParts().clear();
|
|
332
|
representation.getParts().addAll(matchingParts);
|
|
333
|
|
|
334
|
//keyString =(dwa + representationCnt++) + '_' + representation.getMimeType();
|
|
335
|
|
|
336
|
prefRepr.put((dwa + representationCnt++), representation);
|
|
337
|
}
|
|
338
|
} // loop representations
|
|
339
|
} // loop mime types
|
|
340
|
logger.debug(prefRepr.size() + " preferred representations found");
|
|
341
|
return prefRepr;
|
|
342
|
}
|
|
343
|
}
|