1 |
|
package eu.etaxonomy.cdm.model.media;
|
2 |
|
|
3 |
|
import java.awt.Dimension;
|
4 |
|
import java.util.ArrayList;
|
5 |
|
import java.util.HashMap;
|
6 |
|
import java.util.LinkedHashMap;
|
7 |
|
import java.util.LinkedHashSet;
|
8 |
|
import java.util.List;
|
9 |
|
import java.util.Map;
|
10 |
|
import java.util.Set;
|
11 |
|
import java.util.SortedMap;
|
12 |
|
import java.util.TreeMap;
|
13 |
|
import java.util.regex.Pattern;
|
14 |
|
import java.util.stream.Collectors;
|
15 |
|
|
16 |
|
import org.apache.logging.log4j.LogManager;import org.apache.logging.log4j.Logger;
|
17 |
|
|
18 |
|
import eu.etaxonomy.cdm.model.common.CdmBase;
|
19 |
|
|
20 |
|
public class MediaUtils {
|
21 |
|
|
22 |
|
private static final Logger logger = LogManager.getLogger(MediaUtils.class);
|
23 |
|
|
24 |
|
|
25 |
|
public static MediaRepresentation findBestMatchingRepresentation(Media media,
|
26 |
|
Class<? extends MediaRepresentationPart> representationPartType, Integer size, Integer height,
|
27 |
|
Integer widthOrDuration, String[] mimeTypes, MissingValueStrategy missingValStrategy){
|
28 |
|
|
29 |
|
// find best matching representations of each media
|
30 |
|
Set<MediaRepresentation> representations = media.getRepresentations();
|
31 |
|
return findBestMatchingRepresentation(representations, representationPartType, size, height, widthOrDuration,
|
32 |
|
mimeTypes, missingValStrategy);
|
33 |
|
}
|
34 |
|
|
35 |
|
public static MediaRepresentation findBestMatchingRepresentation(
|
36 |
|
Set<MediaRepresentation> representations, Class<? extends MediaRepresentationPart> representationPartType, Integer size,
|
37 |
|
Integer height, Integer widthOrDuration, String[] mimeTypes,
|
38 |
|
MissingValueStrategy missingValStrategy) {
|
39 |
|
|
40 |
|
SortedMap<Long, MediaRepresentation> prefRepresentations
|
41 |
|
= filterAndOrderMediaRepresentations(representations, representationPartType, mimeTypes,
|
42 |
|
size, widthOrDuration, height, missingValStrategy);
|
43 |
|
if(prefRepresentations.size() > 0){
|
44 |
|
MediaRepresentation prefOne = prefRepresentations.get(prefRepresentations.firstKey());
|
45 |
|
return prefOne;
|
46 |
|
}
|
47 |
|
return null;
|
48 |
|
}
|
49 |
|
|
50 |
|
/**
|
51 |
|
* Return the first {@link MediaRepresentationPart} found for the given {@link Media}
|
52 |
|
* or <code>null</code> otherwise.
|
53 |
|
* @param media the media which is searched for the first part
|
54 |
|
* @return the first part found or <code>null</code>
|
55 |
|
*/
|
56 |
|
public static MediaRepresentationPart getFirstMediaRepresentationPart(Media media){
|
57 |
|
if(media==null){
|
58 |
|
return null;
|
59 |
|
}
|
60 |
|
MediaRepresentationPart mediaRepresentationPart = null;
|
61 |
|
Set<MediaRepresentation> representations = media.getRepresentations();
|
62 |
|
if(representations!=null && representations.size()>0){
|
63 |
|
MediaRepresentation mediaRepresentation = representations.iterator().next();
|
64 |
|
List<MediaRepresentationPart> parts = mediaRepresentation.getParts();
|
65 |
|
if(parts!=null && parts.size()>0){
|
66 |
|
mediaRepresentationPart = parts.iterator().next();
|
67 |
|
}
|
68 |
|
}
|
69 |
|
return mediaRepresentationPart;
|
70 |
|
}
|
71 |
|
|
72 |
|
/**
|
73 |
|
* Creates one single {@link MediaRepresentationPart} for the given {@link Media}
|
74 |
|
* if it does not already exists. Otherwise the first part found is returned.<br>
|
75 |
|
* @param media the media for which the representation part should be created
|
76 |
|
* @return the first or newly created representation part
|
77 |
|
*/
|
78 |
|
public static MediaRepresentationPart initFirstMediaRepresentationPart(Media media, boolean isImage) {
|
79 |
|
MediaRepresentationPart mediaRepresentationPart = getFirstMediaRepresentationPart(media);
|
80 |
|
if(mediaRepresentationPart==null){
|
81 |
|
Set<MediaRepresentation> representations = media.getRepresentations();
|
82 |
|
if(representations!=null && representations.size()>0){
|
83 |
|
MediaRepresentation mediaRepresentation = representations.iterator().next();
|
84 |
|
if(isImage){
|
85 |
|
mediaRepresentationPart = ImageFile.NewInstance(null, null);
|
86 |
|
}
|
87 |
|
else{
|
88 |
|
mediaRepresentationPart = MediaRepresentationPart.NewInstance(null, null);
|
89 |
|
}
|
90 |
|
mediaRepresentation.addRepresentationPart(mediaRepresentationPart);
|
91 |
|
}
|
92 |
|
else{
|
93 |
|
if(isImage){
|
94 |
|
mediaRepresentationPart = ImageFile.NewInstance(null, null);
|
95 |
|
}
|
96 |
|
else{
|
97 |
|
mediaRepresentationPart = MediaRepresentationPart.NewInstance(null, null);
|
98 |
|
}
|
99 |
|
|
100 |
|
MediaRepresentation mediaRepresentation = MediaRepresentation.NewInstance();
|
101 |
|
mediaRepresentation.addRepresentationPart(mediaRepresentationPart);
|
102 |
|
media.addRepresentation(mediaRepresentation);
|
103 |
|
}
|
104 |
|
}
|
105 |
|
return mediaRepresentationPart;
|
106 |
|
}
|
107 |
|
|
108 |
|
/**
|
109 |
|
* Filters the given List of Media by the supplied filter parameters <code>representationPartType</code>,
|
110 |
|
* <code>mimeTypes</code>, <code>widthOrDuration</code>, <code>height</code>, <code>size</code>.
|
111 |
|
* Only best matching MediaRepresentation remains attached to the Media entities.
|
112 |
|
* A Media entity may be completely omitted in the resulting list if {@link #filterAndOrderMediaRepresentations(Set, Class, String[], Integer, Integer, Integer)}
|
113 |
|
* is not returning any matching representation. This can be the case if a <code>representationPartType</code> is supplied.
|
114 |
|
*
|
115 |
|
* @param mediaList
|
116 |
|
* @param representationPartType any subclass of {@link MediaRepresentationPart}
|
117 |
|
* @param mimeTypes
|
118 |
|
* @param widthOrDuration
|
119 |
|
* @param height
|
120 |
|
* @param size
|
121 |
|
* @return
|
122 |
|
*/
|
123 |
|
public static Map<Media, MediaRepresentation> findPreferredMedia(List<Media> mediaList,
|
124 |
|
Class<? extends MediaRepresentationPart> representationPartType, String[] mimeTypes, Integer widthOrDuration,
|
125 |
|
Integer height, Integer size, MissingValueStrategy missingValStrat) {
|
126 |
|
|
127 |
|
if(mimeTypes != null) {
|
128 |
|
for(int i=0; i<mimeTypes.length; i++){
|
129 |
|
mimeTypes[i] = mimeTypes[i].replace(':', '/');
|
130 |
|
}
|
131 |
|
}
|
132 |
|
|
133 |
|
Map<Media, MediaRepresentation> returnMediaList;
|
134 |
|
if(mediaList != null){
|
135 |
|
returnMediaList = new LinkedHashMap<>(mediaList.size());
|
136 |
|
for(Media media : mediaList){
|
137 |
|
|
138 |
|
Set<MediaRepresentation> candidateRepresentations = new LinkedHashSet<>();
|
139 |
|
candidateRepresentations.addAll(media.getRepresentations());
|
140 |
|
|
141 |
|
SortedMap<Long, MediaRepresentation> prefRepresentations
|
142 |
|
= filterAndOrderMediaRepresentations(candidateRepresentations, representationPartType,
|
143 |
|
mimeTypes, size, widthOrDuration, height, missingValStrat);
|
144 |
|
|
145 |
|
if(prefRepresentations.size() > 0){
|
146 |
|
// Media.representations is a set
|
147 |
|
// so it cannot retain the sorting which has been found by filterAndOrderMediaRepresentations()
|
148 |
|
// thus we take first one and remove all other representations
|
149 |
|
returnMediaList.put(media, prefRepresentations.get(prefRepresentations.firstKey()));
|
150 |
|
}
|
151 |
|
|
152 |
|
}
|
153 |
|
}
|
154 |
|
else{
|
155 |
|
returnMediaList = new HashMap<>();
|
156 |
|
}
|
157 |
|
return returnMediaList;
|
158 |
|
}
|
159 |
|
|
160 |
|
/**
|
161 |
|
* @see also cdm-dataportal: cdm-api.module#cdm_preferred_media_representations()
|
162 |
|
*
|
163 |
|
* @param mediaRepresentations
|
164 |
|
* @param representationPartType
|
165 |
|
* @param mimeTypeRegexes
|
166 |
|
* @param size
|
167 |
|
* Applies to all {@link MediaRepresentationPart}s (value = <code>null</code> means ignore, for maximum size use {@link Integer#MAX_VALUE})
|
168 |
|
* @param widthOrDuration
|
169 |
|
* Applied to {@link ImageFile#getWidth()}, or {@link {@link MovieFile#getDuration()},
|
170 |
|
* or {@link {@link AudioFile#getDuration()} (value = <code>null</code> means ignore,
|
171 |
|
* for maximum use {@link Integer#MAX_VALUE})
|
172 |
|
* @param height
|
173 |
|
* The height is only applied to {@link ImageFile}s (value = <code>null</code> means ignore,
|
174 |
|
* for maximum height use {@link Integer#MAX_VALUE})
|
175 |
|
* @return
|
176 |
|
*/
|
177 |
|
public static SortedMap<Long, MediaRepresentation> filterAndOrderMediaRepresentations(
|
178 |
|
Set<MediaRepresentation> mediaRepresentations,
|
179 |
|
Class<? extends MediaRepresentationPart> representationPartType, String[] mimeTypeRegexes,
|
180 |
|
Integer size, Integer widthOrDuration, Integer height,
|
181 |
|
MissingValueStrategy missingValStrat) {
|
182 |
|
|
183 |
|
SortedMap<Long, MediaRepresentation> prefRepr = new TreeMap<>();
|
184 |
|
|
185 |
|
Dimension preferredImageDimensions = dimensionsFilter(widthOrDuration, height, null);
|
186 |
|
long preferredExpansion = expanse(preferredImageDimensions);
|
187 |
|
logger.debug("preferredExpansion: " + preferredExpansion);
|
188 |
|
|
189 |
|
mimeTypeRegexes = (mimeTypeRegexes == null ? new String[]{".*"} : mimeTypeRegexes);
|
190 |
|
|
191 |
|
for (String mimeTypeRegex : mimeTypeRegexes) {
|
192 |
|
// getRepresentationByMimeType
|
193 |
|
Pattern mimeTypePattern = Pattern.compile(mimeTypeRegex);
|
194 |
|
int representationCnt = 0;
|
195 |
|
for (MediaRepresentation representation : mediaRepresentations) {
|
196 |
|
|
197 |
|
List<MediaRepresentationPart> matchingParts = new ArrayList<>();
|
198 |
|
|
199 |
|
|
200 |
|
// check MIME type
|
201 |
|
boolean isMimeTypeMatch = representation.getMimeType() == null
|
202 |
|
|| mimeTypePattern.matcher(representation.getMimeType()).matches();
|
203 |
|
if(logger.isDebugEnabled()){
|
204 |
|
logger.debug("isMimeTypeMatch: " + Boolean.valueOf(isMimeTypeMatch).toString());
|
205 |
|
}
|
206 |
|
|
207 |
|
long dimensionsDeltaAllParts = 0;
|
208 |
|
|
209 |
|
//first the size is used for comparison
|
210 |
|
for (MediaRepresentationPart part : representation.getParts()) {
|
211 |
|
|
212 |
|
// check representationPartType
|
213 |
|
boolean isRepresentationPartTypeMatch = representationPartType == null
|
214 |
|
|| part.getClass().isAssignableFrom(representationPartType);
|
215 |
|
if(logger.isDebugEnabled()){
|
216 |
|
logger.debug("isRepresentationPartTypeMatch: " + Boolean.valueOf(isRepresentationPartTypeMatch).toString());
|
217 |
|
}
|
218 |
|
|
219 |
|
if ( !(isRepresentationPartTypeMatch && isMimeTypeMatch) ) {
|
220 |
|
continue;
|
221 |
|
}
|
222 |
|
|
223 |
|
if(logger.isDebugEnabled()){
|
224 |
|
logger.debug(part + " matches");
|
225 |
|
}
|
226 |
|
matchingParts.add(part);
|
227 |
|
|
228 |
|
Integer sizeOfPart = part.getSize();
|
229 |
|
if(isUndefined(sizeOfPart)){
|
230 |
|
sizeOfPart = missingValStrat.applyTo(sizeOfPart);
|
231 |
|
}
|
232 |
|
if (size != null && sizeOfPart != null){
|
233 |
|
int distance = sizeOfPart - size;
|
234 |
|
if (distance < 0) {
|
235 |
|
distance *= -1;
|
236 |
|
}
|
237 |
|
dimensionsDeltaAllParts += distance;
|
238 |
|
|
239 |
|
}
|
240 |
|
|
241 |
|
//if height and width/duration is defined, add this information, too
|
242 |
|
if (preferredImageDimensions != null || widthOrDuration != null){
|
243 |
|
long expansionDelta = 0;
|
244 |
|
if (part.isInstanceOf(ImageFile.class)) {
|
245 |
|
if (preferredImageDimensions != null){
|
246 |
|
ImageFile image = CdmBase.deproxy(part, ImageFile.class);
|
247 |
|
Dimension imageDimension = dimensionsFilter(image.getWidth(), image.getHeight(), missingValStrat);
|
248 |
|
if (imageDimension != null){
|
249 |
|
expansionDelta = Math.abs(expanse(imageDimension) - preferredExpansion);
|
250 |
|
}
|
251 |
|
if(logger.isDebugEnabled()){
|
252 |
|
if(logger.isDebugEnabled()){
|
253 |
|
logger.debug("part [" + part.getUri() + "; " + imageDimension + "] : preferredImageDimensions= " + preferredImageDimensions + ", size= " + size+ " >>" + expansionDelta );
|
254 |
|
}
|
255 |
|
}
|
256 |
|
}
|
257 |
|
}
|
258 |
|
else if (part.isInstanceOf(MovieFile.class)){
|
259 |
|
MovieFile movie = CdmBase.deproxy(part, MovieFile.class);
|
260 |
|
Integer durationOfMovie = movie.getDuration();
|
261 |
|
if(isUndefined(durationOfMovie)){
|
262 |
|
durationOfMovie = null; // convert potential 0 to null!
|
263 |
|
}
|
264 |
|
durationOfMovie = missingValStrat.applyTo(durationOfMovie);
|
265 |
|
if(widthOrDuration != null){
|
266 |
|
expansionDelta = durationOfMovie - widthOrDuration;
|
267 |
|
}
|
268 |
|
if(logger.isDebugEnabled()){
|
269 |
|
logger.debug("part MovieFile[" + part.getUri() + "; duration=" + movie.getDuration() + "-> " + durationOfMovie + "] : preferrdDuration= " + widthOrDuration + ", size= " + size+ " >>" + expansionDelta );
|
270 |
|
}
|
271 |
|
} else if (part.isInstanceOf(AudioFile.class)){
|
272 |
|
AudioFile audio = CdmBase.deproxy(part, AudioFile.class);
|
273 |
|
Integer durationOfAudio = audio.getDuration();
|
274 |
|
if(isUndefined(durationOfAudio)){
|
275 |
|
durationOfAudio = null; // convert potential 0 to null!
|
276 |
|
}
|
277 |
|
durationOfAudio = missingValStrat.applyTo(durationOfAudio);
|
278 |
|
if(widthOrDuration != null) {
|
279 |
|
expansionDelta = durationOfAudio - widthOrDuration;
|
280 |
|
}
|
281 |
|
if(logger.isDebugEnabled()){
|
282 |
|
logger.debug("part AudioFile[" + part.getUri() + "; duration=" + audio.getDuration() + "-> " + durationOfAudio + "] : preferrdDuration= " + widthOrDuration + ", size= " + size + " >>" + expansionDelta );
|
283 |
|
}
|
284 |
|
}
|
285 |
|
// the expansionDelta is summed up since the parts together for the whole
|
286 |
|
// which is bigger than only a part. By simply summing up images splitted
|
287 |
|
// into parts have too much weight compared to the single image but since
|
288 |
|
// parts are not used at all this is currently not a problem
|
289 |
|
dimensionsDeltaAllParts += expansionDelta;
|
290 |
|
|
291 |
|
}
|
292 |
|
} // loop parts
|
293 |
|
logger.debug("matchingParts.size():" + matchingParts.size());
|
294 |
|
if(matchingParts.size() > 0 ){
|
295 |
|
representation.getParts().clear();
|
296 |
|
representation.getParts().addAll(matchingParts);
|
297 |
|
prefRepr.put((dimensionsDeltaAllParts + representationCnt++), representation);
|
298 |
|
}
|
299 |
|
} // loop representations
|
300 |
|
} // loop mime types
|
301 |
|
if(logger.isDebugEnabled()){
|
302 |
|
String text = prefRepr.keySet().stream()
|
303 |
|
.map(key -> key + ": " + prefRepr.get(key).getParts().get(0).getUri().toString())
|
304 |
|
.collect(Collectors.joining(", ", "{", "}"));
|
305 |
|
logger.debug("resulting representations: " + text);
|
306 |
|
}
|
307 |
|
|
308 |
|
|
309 |
|
return prefRepr;
|
310 |
|
|
311 |
|
}
|
312 |
|
|
313 |
|
/**
|
314 |
|
* @param imageDimension
|
315 |
|
* @return
|
316 |
|
*/
|
317 |
|
static long expanse(Dimension imageDimension) {
|
318 |
|
if(imageDimension != null){
|
319 |
|
return (long)imageDimension.height * (long)imageDimension.width;
|
320 |
|
} else {
|
321 |
|
return -1;
|
322 |
|
}
|
323 |
|
}
|
324 |
|
|
325 |
|
/**
|
326 |
|
* @param widthOrDuration
|
327 |
|
* @param height
|
328 |
|
* @param mvs Will be applied when both, width and height, are <code>null</code>
|
329 |
|
*/
|
330 |
|
static Dimension dimensionsFilter(Integer width, Integer height, MissingValueStrategy mvs) {
|
331 |
|
Dimension imageDimensions = null;
|
332 |
|
if(!isUndefined(height) || !isUndefined(width)){
|
333 |
|
imageDimensions = new Dimension();
|
334 |
|
if (!isUndefined(height) && isUndefined(width)){
|
335 |
|
imageDimensions.setSize(1, height);
|
336 |
|
} else if(isUndefined(height) && !isUndefined(width)) {
|
337 |
|
imageDimensions.setSize(width, 1); // --> height will be respected and width is ignored
|
338 |
|
} else {
|
339 |
|
imageDimensions.setSize(width, height);
|
340 |
|
}
|
341 |
|
} else {
|
342 |
|
// both, width and height, are undefined
|
343 |
|
|
344 |
|
if(mvs != null){
|
345 |
|
// set both values to null so that the MissingValueStrategy can be applied
|
346 |
|
// the MissingValueStrategy only get effective when the supplied value is NULL
|
347 |
|
width = null;
|
348 |
|
height = null;
|
349 |
|
imageDimensions = new Dimension(mvs.applyTo(width), mvs.applyTo(height));
|
350 |
|
}
|
351 |
|
}
|
352 |
|
return imageDimensions;
|
353 |
|
}
|
354 |
|
|
355 |
|
static private boolean isUndefined(Integer val) {
|
356 |
|
return val == null || val == 0;
|
357 |
|
}
|
358 |
|
|
359 |
|
/**
|
360 |
|
* Strategies for replacing <code>null</code> values with a numeric value.
|
361 |
|
*
|
362 |
|
* @author a.kohlbecker
|
363 |
|
*/
|
364 |
|
public enum MissingValueStrategy {
|
365 |
|
/**
|
366 |
|
* replace <code>null</code> by {@link Integer#MAX_VALUE}
|
367 |
|
*/
|
368 |
|
MAX(Integer.MAX_VALUE),
|
369 |
|
/**
|
370 |
|
* replace <code>null</code> by <code>0</code>
|
371 |
|
*/
|
372 |
|
ZERO(0);
|
373 |
|
|
374 |
|
private Integer defaultValue;
|
375 |
|
|
376 |
|
MissingValueStrategy(Integer defaultValue){
|
377 |
|
this.defaultValue = defaultValue;
|
378 |
|
}
|
379 |
|
|
380 |
|
public Integer applyTo(Integer val){
|
381 |
|
if(val == null){
|
382 |
|
return defaultValue;
|
383 |
|
} else {
|
384 |
|
return val;
|
385 |
|
}
|
386 |
|
}
|
387 |
|
}
|
388 |
|
}
|
|
1 |
package eu.etaxonomy.cdm.model.media;
|
|
2 |
|
|
3 |
import java.awt.Dimension;
|
|
4 |
import java.util.ArrayList;
|
|
5 |
import java.util.HashMap;
|
|
6 |
import java.util.LinkedHashMap;
|
|
7 |
import java.util.LinkedHashSet;
|
|
8 |
import java.util.List;
|
|
9 |
import java.util.Map;
|
|
10 |
import java.util.Set;
|
|
11 |
import java.util.SortedMap;
|
|
12 |
import java.util.TreeMap;
|
|
13 |
import java.util.regex.Pattern;
|
|
14 |
import java.util.stream.Collectors;
|
|
15 |
|
|
16 |
import org.apache.logging.log4j.LogManager;
|
|
17 |
import org.apache.logging.log4j.Logger;
|
|
18 |
|
|
19 |
import eu.etaxonomy.cdm.model.common.CdmBase;
|
|
20 |
|
|
21 |
public class MediaUtils {
|
|
22 |
|
|
23 |
private static final Logger logger = LogManager.getLogger();
|
|
24 |
|
|
25 |
|
|
26 |
public static MediaRepresentation findBestMatchingRepresentation(Media media,
|
|
27 |
Class<? extends MediaRepresentationPart> representationPartType, Integer size, Integer height,
|
|
28 |
Integer widthOrDuration, String[] mimeTypes, MissingValueStrategy missingValStrategy){
|
|
29 |
|
|
30 |
// find best matching representations of each media
|
|
31 |
Set<MediaRepresentation> representations = media.getRepresentations();
|
|
32 |
return findBestMatchingRepresentation(representations, representationPartType, size, height, widthOrDuration,
|
|
33 |
mimeTypes, missingValStrategy);
|
|
34 |
}
|
|
35 |
|
|
36 |
public static MediaRepresentation findBestMatchingRepresentation(
|
|
37 |
Set<MediaRepresentation> representations, Class<? extends MediaRepresentationPart> representationPartType, Integer size,
|
|
38 |
Integer height, Integer widthOrDuration, String[] mimeTypes,
|
|
39 |
MissingValueStrategy missingValStrategy) {
|
|
40 |
|
|
41 |
SortedMap<Long, MediaRepresentation> prefRepresentations
|
|
42 |
= filterAndOrderMediaRepresentations(representations, representationPartType, mimeTypes,
|
|
43 |
size, widthOrDuration, height, missingValStrategy);
|
|
44 |
if(prefRepresentations.size() > 0){
|
|
45 |
MediaRepresentation prefOne = prefRepresentations.get(prefRepresentations.firstKey());
|
|
46 |
return prefOne;
|
|
47 |
}
|
|
48 |
return null;
|
|
49 |
}
|
|
50 |
|
|
51 |
/**
|
|
52 |
* Return the first {@link MediaRepresentationPart} found for the given {@link Media}
|
|
53 |
* or <code>null</code> otherwise.
|
|
54 |
* @param media the media which is searched for the first part
|
|
55 |
* @return the first part found or <code>null</code>
|
|
56 |
*/
|
|
57 |
public static MediaRepresentationPart getFirstMediaRepresentationPart(Media media){
|
|
58 |
if(media==null){
|
|
59 |
return null;
|
|
60 |
}
|
|
61 |
MediaRepresentationPart mediaRepresentationPart = null;
|
|
62 |
Set<MediaRepresentation> representations = media.getRepresentations();
|
|
63 |
if(representations!=null && representations.size()>0){
|
|
64 |
MediaRepresentation mediaRepresentation = representations.iterator().next();
|
|
65 |
List<MediaRepresentationPart> parts = mediaRepresentation.getParts();
|
|
66 |
if(parts!=null && parts.size()>0){
|
|
67 |
mediaRepresentationPart = parts.iterator().next();
|
|
68 |
}
|
|
69 |
}
|
|
70 |
return mediaRepresentationPart;
|
|
71 |
}
|
|
72 |
|
|
73 |
/**
|
|
74 |
* Creates one single {@link MediaRepresentationPart} for the given {@link Media}
|
|
75 |
* if it does not already exists. Otherwise the first part found is returned.<br>
|
|
76 |
* @param media the media for which the representation part should be created
|
|
77 |
* @return the first or newly created representation part
|
|
78 |
*/
|
|
79 |
public static MediaRepresentationPart initFirstMediaRepresentationPart(Media media, boolean isImage) {
|
|
80 |
MediaRepresentationPart mediaRepresentationPart = getFirstMediaRepresentationPart(media);
|
|
81 |
if(mediaRepresentationPart==null){
|
|
82 |
Set<MediaRepresentation> representations = media.getRepresentations();
|
|
83 |
if(representations!=null && representations.size()>0){
|
|
84 |
MediaRepresentation mediaRepresentation = representations.iterator().next();
|
|
85 |
if(isImage){
|
|
86 |
mediaRepresentationPart = ImageFile.NewInstance(null, null);
|
|
87 |
}
|
|
88 |
else{
|
|
89 |
mediaRepresentationPart = MediaRepresentationPart.NewInstance(null, null);
|
|
90 |
}
|
|
91 |
mediaRepresentation.addRepresentationPart(mediaRepresentationPart);
|
|
92 |
}
|
|
93 |
else{
|
|
94 |
if(isImage){
|
|
95 |
mediaRepresentationPart = ImageFile.NewInstance(null, null);
|
|
96 |
}
|
|
97 |
else{
|
|
98 |
mediaRepresentationPart = MediaRepresentationPart.NewInstance(null, null);
|
|
99 |
}
|
|
100 |
|
|
101 |
MediaRepresentation mediaRepresentation = MediaRepresentation.NewInstance();
|
|
102 |
mediaRepresentation.addRepresentationPart(mediaRepresentationPart);
|
|
103 |
media.addRepresentation(mediaRepresentation);
|
|
104 |
}
|
|
105 |
}
|
|
106 |
return mediaRepresentationPart;
|
|
107 |
}
|
|
108 |
|
|
109 |
/**
|
|
110 |
* Filters the given List of Media by the supplied filter parameters <code>representationPartType</code>,
|
|
111 |
* <code>mimeTypes</code>, <code>widthOrDuration</code>, <code>height</code>, <code>size</code>.
|
|
112 |
* Only best matching MediaRepresentation remains attached to the Media entities.
|
|
113 |
* A Media entity may be completely omitted in the resulting list if {@link #filterAndOrderMediaRepresentations(Set, Class, String[], Integer, Integer, Integer)}
|
|
114 |
* is not returning any matching representation. This can be the case if a <code>representationPartType</code> is supplied.
|
|
115 |
*
|
|
116 |
* @param mediaList
|
|
117 |
* @param representationPartType any subclass of {@link MediaRepresentationPart}
|
|
118 |
* @param mimeTypes
|
|
119 |
* @param widthOrDuration
|
|
120 |
* @param height
|
|
121 |
* @param size
|
|
122 |
* @return
|
|
123 |
*/
|
|
124 |
public static Map<Media, MediaRepresentation> findPreferredMedia(List<Media> mediaList,
|
|
125 |
Class<? extends MediaRepresentationPart> representationPartType, String[] mimeTypes, Integer widthOrDuration,
|
|
126 |
Integer height, Integer size, MissingValueStrategy missingValStrat) {
|
|
127 |
|
|
128 |
if(mimeTypes != null) {
|
|
129 |
for(int i=0; i<mimeTypes.length; i++){
|
|
130 |
mimeTypes[i] = mimeTypes[i].replace(':', '/');
|
|
131 |
}
|
|
132 |
}
|
|
133 |
|
|
134 |
Map<Media, MediaRepresentation> returnMediaList;
|
|
135 |
if(mediaList != null){
|
|
136 |
returnMediaList = new LinkedHashMap<>(mediaList.size());
|
|
137 |
for(Media media : mediaList){
|
|
138 |
|
|
139 |
Set<MediaRepresentation> candidateRepresentations = new LinkedHashSet<>();
|
|
140 |
candidateRepresentations.addAll(media.getRepresentations());
|
|
141 |
|
|
142 |
SortedMap<Long, MediaRepresentation> prefRepresentations
|
|
143 |
= filterAndOrderMediaRepresentations(candidateRepresentations, representationPartType,
|
|
144 |
mimeTypes, size, widthOrDuration, height, missingValStrat);
|
|
145 |
|
|
146 |
if(prefRepresentations.size() > 0){
|
|
147 |
// Media.representations is a set
|
|
148 |
// so it cannot retain the sorting which has been found by filterAndOrderMediaRepresentations()
|
|
149 |
// thus we take first one and remove all other representations
|
|
150 |
returnMediaList.put(media, prefRepresentations.get(prefRepresentations.firstKey()));
|
|
151 |
}
|
|
152 |
|
|
153 |
}
|
|
154 |
}
|
|
155 |
else{
|
|
156 |
returnMediaList = new HashMap<>();
|
|
157 |
}
|
|
158 |
return returnMediaList;
|
|
159 |
}
|
|
160 |
|
|
161 |
/**
|
|
162 |
* @see also cdm-dataportal: cdm-api.module#cdm_preferred_media_representations()
|
|
163 |
*
|
|
164 |
* @param mediaRepresentations
|
|
165 |
* @param representationPartType
|
|
166 |
* @param mimeTypeRegexes
|
|
167 |
* @param size
|
|
168 |
* Applies to all {@link MediaRepresentationPart}s (value = <code>null</code> means ignore, for maximum size use {@link Integer#MAX_VALUE})
|
|
169 |
* @param widthOrDuration
|
|
170 |
* Applied to {@link ImageFile#getWidth()}, or {@link {@link MovieFile#getDuration()},
|
|
171 |
* or {@link {@link AudioFile#getDuration()} (value = <code>null</code> means ignore,
|
|
172 |
* for maximum use {@link Integer#MAX_VALUE})
|
|
173 |
* @param height
|
|
174 |
* The height is only applied to {@link ImageFile}s (value = <code>null</code> means ignore,
|
|
175 |
* for maximum height use {@link Integer#MAX_VALUE})
|
|
176 |
* @return
|
|
177 |
*/
|
|
178 |
public static SortedMap<Long, MediaRepresentation> filterAndOrderMediaRepresentations(
|
|
179 |
Set<MediaRepresentation> mediaRepresentations,
|
|
180 |
Class<? extends MediaRepresentationPart> representationPartType, String[] mimeTypeRegexes,
|
|
181 |
Integer size, Integer widthOrDuration, Integer height,
|
|
182 |
MissingValueStrategy missingValStrat) {
|
|
183 |
|
|
184 |
SortedMap<Long, MediaRepresentation> prefRepr = new TreeMap<>();
|
|
185 |
|
|
186 |
Dimension preferredImageDimensions = dimensionsFilter(widthOrDuration, height, null);
|
|
187 |
long preferredExpansion = expanse(preferredImageDimensions);
|
|
188 |
logger.debug("preferredExpansion: " + preferredExpansion);
|
|
189 |
|
|
190 |
mimeTypeRegexes = (mimeTypeRegexes == null ? new String[]{".*"} : mimeTypeRegexes);
|
|
191 |
|
|
192 |
for (String mimeTypeRegex : mimeTypeRegexes) {
|
|
193 |
// getRepresentationByMimeType
|
|
194 |
Pattern mimeTypePattern = Pattern.compile(mimeTypeRegex);
|
|
195 |
int representationCnt = 0;
|
|
196 |
for (MediaRepresentation representation : mediaRepresentations) {
|
|
197 |
|
|
198 |
List<MediaRepresentationPart> matchingParts = new ArrayList<>();
|
|
199 |
|
|
200 |
|
|
201 |
// check MIME type
|
|
202 |
boolean isMimeTypeMatch = representation.getMimeType() == null
|
|
203 |
|| mimeTypePattern.matcher(representation.getMimeType()).matches();
|
|
204 |
if(logger.isDebugEnabled()){
|
|
205 |
logger.debug("isMimeTypeMatch: " + Boolean.valueOf(isMimeTypeMatch).toString());
|
|
206 |
}
|
|
207 |
|
|
208 |
long dimensionsDeltaAllParts = 0;
|
|
209 |
|
|
210 |
//first the size is used for comparison
|
|
211 |
for (MediaRepresentationPart part : representation.getParts()) {
|
|
212 |
|
|
213 |
// check representationPartType
|
|
214 |
boolean isRepresentationPartTypeMatch = representationPartType == null
|
|
215 |
|| part.getClass().isAssignableFrom(representationPartType);
|
|
216 |
if(logger.isDebugEnabled()){
|
|
217 |
logger.debug("isRepresentationPartTypeMatch: " + Boolean.valueOf(isRepresentationPartTypeMatch).toString());
|
|
218 |
}
|
|
219 |
|
|
220 |
if ( !(isRepresentationPartTypeMatch && isMimeTypeMatch) ) {
|
|
221 |
continue;
|
|
222 |
}
|
|
223 |
|
|
224 |
if(logger.isDebugEnabled()){
|
|
225 |
logger.debug(part + " matches");
|
|
226 |
}
|
|
227 |
matchingParts.add(part);
|
|
228 |
|
|
229 |
Integer sizeOfPart = part.getSize();
|
|
230 |
if(isUndefined(sizeOfPart)){
|
|
231 |
sizeOfPart = missingValStrat.applyTo(sizeOfPart);
|
|
232 |
}
|
|
233 |
if (size != null && sizeOfPart != null){
|
|
234 |
int distance = sizeOfPart - size;
|
|
235 |
if (distance < 0) {
|
|
236 |
distance *= -1;
|
|
237 |
}
|
|
238 |
dimensionsDeltaAllParts += distance;
|
|
239 |
|
|
240 |
}
|
|
241 |
|
|
242 |
//if height and width/duration is defined, add this information, too
|
|
243 |
if (preferredImageDimensions != null || widthOrDuration != null){
|
|
244 |
long expansionDelta = 0;
|
|
245 |
if (part.isInstanceOf(ImageFile.class)) {
|
|
246 |
if (preferredImageDimensions != null){
|
|
247 |
ImageFile image = CdmBase.deproxy(part, ImageFile.class);
|
|
248 |
Dimension imageDimension = dimensionsFilter(image.getWidth(), image.getHeight(), missingValStrat);
|
|
249 |
if (imageDimension != null){
|
|
250 |
expansionDelta = Math.abs(expanse(imageDimension) - preferredExpansion);
|
|
251 |
}
|
|
252 |
if(logger.isDebugEnabled()){
|
|
253 |
if(logger.isDebugEnabled()){
|
|
254 |
logger.debug("part [" + part.getUri() + "; " + imageDimension + "] : preferredImageDimensions= " + preferredImageDimensions + ", size= " + size+ " >>" + expansionDelta );
|
|
255 |
}
|
|
256 |
}
|
|
257 |
}
|
|
258 |
}
|
|
259 |
else if (part.isInstanceOf(MovieFile.class)){
|
|
260 |
MovieFile movie = CdmBase.deproxy(part, MovieFile.class);
|
|
261 |
Integer durationOfMovie = movie.getDuration();
|
|
262 |
if(isUndefined(durationOfMovie)){
|
|
263 |
durationOfMovie = null; // convert potential 0 to null!
|
|
264 |
}
|
|
265 |
durationOfMovie = missingValStrat.applyTo(durationOfMovie);
|
|
266 |
if(widthOrDuration != null){
|
|
267 |
expansionDelta = durationOfMovie - widthOrDuration;
|
|
268 |
}
|
|
269 |
if(logger.isDebugEnabled()){
|
|
270 |
logger.debug("part MovieFile[" + part.getUri() + "; duration=" + movie.getDuration() + "-> " + durationOfMovie + "] : preferrdDuration= " + widthOrDuration + ", size= " + size+ " >>" + expansionDelta );
|
|
271 |
}
|
|
272 |
} else if (part.isInstanceOf(AudioFile.class)){
|
|
273 |
AudioFile audio = CdmBase.deproxy(part, AudioFile.class);
|
|
274 |
Integer durationOfAudio = audio.getDuration();
|
|
275 |
if(isUndefined(durationOfAudio)){
|
|
276 |
durationOfAudio = null; // convert potential 0 to null!
|
|
277 |
}
|
|
278 |
durationOfAudio = missingValStrat.applyTo(durationOfAudio);
|
|
279 |
if(widthOrDuration != null) {
|
|
280 |
expansionDelta = durationOfAudio - widthOrDuration;
|
|
281 |
}
|
|
282 |
if(logger.isDebugEnabled()){
|
|
283 |
logger.debug("part AudioFile[" + part.getUri() + "; duration=" + audio.getDuration() + "-> " + durationOfAudio + "] : preferrdDuration= " + widthOrDuration + ", size= " + size + " >>" + expansionDelta );
|
|
284 |
}
|
|
285 |
}
|
|
286 |
// the expansionDelta is summed up since the parts together for the whole
|
|
287 |
// which is bigger than only a part. By simply summing up images splitted
|
|
288 |
// into parts have too much weight compared to the single image but since
|
|
289 |
// parts are not used at all this is currently not a problem
|
|
290 |
dimensionsDeltaAllParts += expansionDelta;
|
|
291 |
|
|
292 |
}
|
|
293 |
} // loop parts
|
|
294 |
logger.debug("matchingParts.size():" + matchingParts.size());
|
|
295 |
if(matchingParts.size() > 0 ){
|
|
296 |
representation.getParts().clear();
|
|
297 |
representation.getParts().addAll(matchingParts);
|
|
298 |
prefRepr.put((dimensionsDeltaAllParts + representationCnt++), representation);
|
|
299 |
}
|
|
300 |
} // loop representations
|
|
301 |
} // loop mime types
|
|
302 |
if(logger.isDebugEnabled()){
|
|
303 |
String text = prefRepr.keySet().stream()
|
|
304 |
.map(key -> key + ": " + prefRepr.get(key).getParts().get(0).getUri().toString())
|
|
305 |
.collect(Collectors.joining(", ", "{", "}"));
|
|
306 |
logger.debug("resulting representations: " + text);
|
|
307 |
}
|
|
308 |
|
|
309 |
return prefRepr;
|
|
310 |
}
|
|
311 |
|
|
312 |
static long expanse(Dimension imageDimension) {
|
|
313 |
if(imageDimension != null){
|
|
314 |
return (long)imageDimension.height * (long)imageDimension.width;
|
|
315 |
} else {
|
|
316 |
return -1;
|
|
317 |
}
|
|
318 |
}
|
|
319 |
|
|
320 |
/**
|
|
321 |
* @param widthOrDuration
|
|
322 |
* @param height
|
|
323 |
* @param mvs Will be applied when both, width and height, are <code>null</code>
|
|
324 |
*/
|
|
325 |
static Dimension dimensionsFilter(Integer width, Integer height, MissingValueStrategy mvs) {
|
|
326 |
Dimension imageDimensions = null;
|
|
327 |
if(!isUndefined(height) || !isUndefined(width)){
|
|
328 |
imageDimensions = new Dimension();
|
|
329 |
if (!isUndefined(height) && isUndefined(width)){
|
|
330 |
imageDimensions.setSize(1, height);
|
|
331 |
} else if(isUndefined(height) && !isUndefined(width)) {
|
|
332 |
imageDimensions.setSize(width, 1); // --> height will be respected and width is ignored
|
|
333 |
} else {
|
|
334 |
imageDimensions.setSize(width, height);
|
|
335 |
}
|
|
336 |
} else {
|
|
337 |
// both, width and height, are undefined
|
|
338 |
|
|
339 |
if(mvs != null){
|
|
340 |
// set both values to null so that the MissingValueStrategy can be applied
|
|
341 |
// the MissingValueStrategy only get effective when the supplied value is NULL
|
|
342 |
width = null;
|
|
343 |
height = null;
|
|
344 |
imageDimensions = new Dimension(mvs.applyTo(width), mvs.applyTo(height));
|
|
345 |
}
|
|
346 |
}
|
|
347 |
return imageDimensions;
|
|
348 |
}
|
|
349 |
|
|
350 |
static private boolean isUndefined(Integer val) {
|
|
351 |
return val == null || val == 0;
|
|
352 |
}
|
|
353 |
|
|
354 |
/**
|
|
355 |
* Strategies for replacing <code>null</code> values with a numeric value.
|
|
356 |
*
|
|
357 |
* @author a.kohlbecker
|
|
358 |
*/
|
|
359 |
public enum MissingValueStrategy {
|
|
360 |
/**
|
|
361 |
* replace <code>null</code> by {@link Integer#MAX_VALUE}
|
|
362 |
*/
|
|
363 |
MAX(Integer.MAX_VALUE),
|
|
364 |
/**
|
|
365 |
* replace <code>null</code> by <code>0</code>
|
|
366 |
*/
|
|
367 |
ZERO(0);
|
|
368 |
|
|
369 |
private Integer defaultValue;
|
|
370 |
|
|
371 |
MissingValueStrategy(Integer defaultValue){
|
|
372 |
this.defaultValue = defaultValue;
|
|
373 |
}
|
|
374 |
|
|
375 |
public Integer applyTo(Integer val){
|
|
376 |
if(val == null){
|
|
377 |
return defaultValue;
|
|
378 |
} else {
|
|
379 |
return val;
|
|
380 |
}
|
|
381 |
}
|
|
382 |
}
|
|
383 |
}
|
cleanup