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/* | ||
* (c) Kitodo. Key to digital objects e. V. <[email protected]> | ||
* | ||
* This file is part of the Kitodo project. | ||
* | ||
* It is licensed under GNU General Public License version 3 or later. | ||
* | ||
* For the full copyright and license information, please read the | ||
* GPL3-License.txt file that was distributed with this source code. | ||
*/ | ||
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package org.kitodo.utils; | ||
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import java.util.Objects; | ||
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import org.kitodo.api.dataformat.PhysicalDivision; | ||
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public class MediaUtil { | ||
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public static final String MIME_TYPE_AUDIO_PREFIX = "audio"; | ||
public static final String MIME_TYPE_IMAGE_PREFIX = "image"; | ||
public static final String MIME_TYPE_VIDEO_PREFIX = "video"; | ||
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/** | ||
* Private constructor to hide the implicit public one. | ||
*/ | ||
private MediaUtil() { | ||
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} | ||
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/** | ||
* Check if mime type starts with {@link org.kitodo.utils.MediaUtil#MIME_TYPE_AUDIO_PREFIX} or | ||
* {@link org.kitodo.utils.MediaUtil#MIME_TYPE_VIDEO_PREFIX}. | ||
* | ||
* @param mimeType | ||
* The mime type to check | ||
* @return True if mime type starts with {@link org.kitodo.utils.MediaUtil#MIME_TYPE_AUDIO_PREFIX} or | ||
* {@link org.kitodo.utils.MediaUtil#MIME_TYPE_VIDEO_PREFIX}. | ||
*/ | ||
public static boolean isAudioOrVideo(String mimeType) { | ||
return isAudio(mimeType) || isVideo(mimeType); | ||
} | ||
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/** | ||
* Check if mime type starts with {@link org.kitodo.utils.MediaUtil#MIME_TYPE_AUDIO_PREFIX}. | ||
* | ||
* @param mimeType | ||
* The mime type to check | ||
* @return True if mime type starts with {@link org.kitodo.utils.MediaUtil#MIME_TYPE_AUDIO_PREFIX} | ||
*/ | ||
public static boolean isAudio(String mimeType) { | ||
return Objects.nonNull(mimeType) && mimeType.startsWith(MIME_TYPE_AUDIO_PREFIX); | ||
} | ||
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/** | ||
* Check if mime type starts with {@link org.kitodo.utils.MediaUtil#MIME_TYPE_IMAGE_PREFIX}. | ||
* | ||
* @param mimeType | ||
* The mime type to check | ||
* @return True if mime type starts with {@link org.kitodo.utils.MediaUtil#MIME_TYPE_IMAGE_PREFIX} | ||
*/ | ||
public static boolean isImage(String mimeType) { | ||
return Objects.nonNull(mimeType) && mimeType.startsWith(MIME_TYPE_IMAGE_PREFIX); | ||
} | ||
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/** | ||
* Check if mime type starts with {@link org.kitodo.utils.MediaUtil#MIME_TYPE_VIDEO_PREFIX}. | ||
* | ||
* @param mimeType | ||
* The mime type to check | ||
* @return True if mime type starts with {@link org.kitodo.utils.MediaUtil#MIME_TYPE_VIDEO_PREFIX} | ||
*/ | ||
public static boolean isVideo(String mimeType) { | ||
return Objects.nonNull(mimeType) && mimeType.startsWith(MIME_TYPE_VIDEO_PREFIX); | ||
} | ||
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/** | ||
* Get the type of {@link org.kitodo.api.dataformat.PhysicalDivision} by mime type. | ||
* | ||
* @param mimeType | ||
* The mime type to get the physical division type for | ||
* @return The type of the {@link org.kitodo.api.dataformat.PhysicalDivision} | ||
*/ | ||
public static String getPhysicalDivisionTypeOfMimeType(String mimeType) { | ||
if (isImage(mimeType)) { | ||
return PhysicalDivision.TYPE_PAGE; | ||
} | ||
if (isAudioOrVideo(mimeType)) { | ||
return PhysicalDivision.TYPE_TRACK; | ||
} | ||
return PhysicalDivision.TYPE_OTHER; | ||
} | ||
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} |
52 changes: 52 additions & 0 deletions
52
Kitodo-API/src/test/java/org/kitodo/utils/MediaUtilTest.java
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@@ -0,0 +1,52 @@ | ||
/* | ||
* (c) Kitodo. Key to digital objects e. V. <[email protected]> | ||
* | ||
* This file is part of the Kitodo project. | ||
* | ||
* It is licensed under GNU General Public License version 3 or later. | ||
* | ||
* For the full copyright and license information, please read the | ||
* GPL3-License.txt file that was distributed with this source code. | ||
*/ | ||
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package org.kitodo.utils; | ||
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import static org.junit.Assert.assertEquals; | ||
import static org.junit.Assert.assertFalse; | ||
import static org.junit.Assert.assertTrue; | ||
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import org.junit.Test; | ||
import org.kitodo.api.dataformat.PhysicalDivision; | ||
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public class MediaUtilTest { | ||
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/** | ||
* Test detection of mime type. | ||
*/ | ||
@Test | ||
public void testMimeTypeDetection() { | ||
assertTrue(MediaUtil.isAudio("audio/mp3")); | ||
assertFalse(MediaUtil.isVideo("image/jpeg")); | ||
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assertTrue(MediaUtil.isImage("image/jpeg")); | ||
assertFalse(MediaUtil.isImage("video/mp4")); | ||
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assertTrue(MediaUtil.isVideo("video/mp4")); | ||
assertFalse(MediaUtil.isVideo("image/jpeg")); | ||
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assertTrue(MediaUtil.isAudioOrVideo("audio/mp3")); | ||
assertTrue(MediaUtil.isAudioOrVideo("video/mp4")); | ||
assertFalse(MediaUtil.isAudioOrVideo("image/jpeg")); | ||
} | ||
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/** | ||
* Test getting the type of the {@link org.kitodo.api.dataformat.PhysicalDivision}. | ||
*/ | ||
@Test | ||
public void testGettingPhysicalDivisionTypeByMimeType() { | ||
assertEquals(PhysicalDivision.TYPE_PAGE, MediaUtil.getPhysicalDivisionTypeOfMimeType("image/jpeg")); | ||
assertEquals(PhysicalDivision.TYPE_TRACK, MediaUtil.getPhysicalDivisionTypeOfMimeType("audio/mp3")); | ||
assertEquals(PhysicalDivision.TYPE_TRACK, MediaUtil.getPhysicalDivisionTypeOfMimeType("video/mp4")); | ||
assertEquals(PhysicalDivision.TYPE_OTHER, MediaUtil.getPhysicalDivisionTypeOfMimeType("application/pdf")); | ||
} | ||
} |
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