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39
40#include "qmediametadata.h"
41
42QT_BEGIN_NAMESPACE
43
44/*
45 When these conditions are satisfied, QStringLiteral is implemented by
46 gcc's statement-expression extension. However, in this file it will
47 not work, because "statement-expressions are not allowed outside functions
48 nor in template-argument lists".
49 MSVC 2012 produces an internal compiler error on encountering
50 QStringLiteral in this context.
51
52 Fall back to the less-performant QLatin1String in this case.
53*/
54#if defined(Q_CC_GNU) && defined(Q_COMPILER_LAMBDA)
55# define Q_DEFINE_METADATA(key) const QString QMediaMetaData::key(QStringLiteral(#key))
56#else
57# define Q_DEFINE_METADATA(key) const QString QMediaMetaData::key(QLatin1String(#key))
58#endif
59
60// Common
61Q_DEFINE_METADATA(Title);
62Q_DEFINE_METADATA(SubTitle);
63Q_DEFINE_METADATA(Author);
64Q_DEFINE_METADATA(Comment);
65Q_DEFINE_METADATA(Description);
66Q_DEFINE_METADATA(Category);
67Q_DEFINE_METADATA(Genre);
68Q_DEFINE_METADATA(Year);
69Q_DEFINE_METADATA(Date);
70Q_DEFINE_METADATA(UserRating);
71Q_DEFINE_METADATA(Keywords);
72Q_DEFINE_METADATA(Language);
73Q_DEFINE_METADATA(Publisher);
74Q_DEFINE_METADATA(Copyright);
75Q_DEFINE_METADATA(ParentalRating);
76Q_DEFINE_METADATA(RatingOrganization);
77
78// Media
79Q_DEFINE_METADATA(Size);
80Q_DEFINE_METADATA(MediaType);
81Q_DEFINE_METADATA(Duration);
82
83// Audio
84Q_DEFINE_METADATA(AudioBitRate);
85Q_DEFINE_METADATA(AudioCodec);
86Q_DEFINE_METADATA(AverageLevel);
87Q_DEFINE_METADATA(ChannelCount);
88Q_DEFINE_METADATA(PeakValue);
89Q_DEFINE_METADATA(SampleRate);
90
91// Music
92Q_DEFINE_METADATA(AlbumTitle);
93Q_DEFINE_METADATA(AlbumArtist);
94Q_DEFINE_METADATA(ContributingArtist);
95Q_DEFINE_METADATA(Composer);
96Q_DEFINE_METADATA(Conductor);
97Q_DEFINE_METADATA(Lyrics);
98Q_DEFINE_METADATA(Mood);
99Q_DEFINE_METADATA(TrackNumber);
100Q_DEFINE_METADATA(TrackCount);
101
102Q_DEFINE_METADATA(CoverArtUrlSmall);
103Q_DEFINE_METADATA(CoverArtUrlLarge);
104
105// Image/Video
106Q_DEFINE_METADATA(Resolution);
107Q_DEFINE_METADATA(PixelAspectRatio);
108Q_DEFINE_METADATA(Orientation);
109
110// Video
111Q_DEFINE_METADATA(VideoFrameRate);
112Q_DEFINE_METADATA(VideoBitRate);
113Q_DEFINE_METADATA(VideoCodec);
114
115Q_DEFINE_METADATA(PosterUrl);
116
117// Movie
118Q_DEFINE_METADATA(ChapterNumber);
119Q_DEFINE_METADATA(Director);
120Q_DEFINE_METADATA(LeadPerformer);
121Q_DEFINE_METADATA(Writer);
122
123// Photos
124Q_DEFINE_METADATA(CameraManufacturer);
125Q_DEFINE_METADATA(CameraModel);
126Q_DEFINE_METADATA(Event);
127Q_DEFINE_METADATA(Subject);
128Q_DEFINE_METADATA(ExposureTime);
129Q_DEFINE_METADATA(FNumber);
130Q_DEFINE_METADATA(ExposureProgram);
131Q_DEFINE_METADATA(ISOSpeedRatings);
132Q_DEFINE_METADATA(ExposureBiasValue);
133Q_DEFINE_METADATA(DateTimeOriginal);
134Q_DEFINE_METADATA(DateTimeDigitized);
135Q_DEFINE_METADATA(SubjectDistance);
136Q_DEFINE_METADATA(MeteringMode);
137Q_DEFINE_METADATA(LightSource);
138Q_DEFINE_METADATA(Flash);
139Q_DEFINE_METADATA(FocalLength);
140Q_DEFINE_METADATA(ExposureMode);
141Q_DEFINE_METADATA(WhiteBalance);
142Q_DEFINE_METADATA(DigitalZoomRatio);
143Q_DEFINE_METADATA(FocalLengthIn35mmFilm);
144Q_DEFINE_METADATA(SceneCaptureType);
145Q_DEFINE_METADATA(GainControl);
146Q_DEFINE_METADATA(Contrast);
147Q_DEFINE_METADATA(Saturation);
148Q_DEFINE_METADATA(Sharpness);
149Q_DEFINE_METADATA(DeviceSettingDescription);
150
151// Location
152Q_DEFINE_METADATA(GPSLatitude);
153Q_DEFINE_METADATA(GPSLongitude);
154Q_DEFINE_METADATA(GPSAltitude);
155Q_DEFINE_METADATA(GPSTimeStamp);
156Q_DEFINE_METADATA(GPSSatellites);
157Q_DEFINE_METADATA(GPSStatus);
158Q_DEFINE_METADATA(GPSDOP);
159Q_DEFINE_METADATA(GPSSpeed);
160Q_DEFINE_METADATA(GPSTrack);
161Q_DEFINE_METADATA(GPSTrackRef);
162Q_DEFINE_METADATA(GPSImgDirection);
163Q_DEFINE_METADATA(GPSImgDirectionRef);
164Q_DEFINE_METADATA(GPSMapDatum);
165Q_DEFINE_METADATA(GPSProcessingMethod);
166Q_DEFINE_METADATA(GPSAreaInformation);
167
168Q_DEFINE_METADATA(PosterImage);
169Q_DEFINE_METADATA(CoverArtImage);
170Q_DEFINE_METADATA(ThumbnailImage);
171
172
173/*!
174 \namespace QMediaMetaData
175 \ingroup multimedia-namespaces
176 \ingroup multimedia
177 \inmodule QtMultimedia
178
179 \brief Provides identifiers for meta-data attributes.
180
181 \note Not all identifiers are supported on all platforms. Please consult vendor documentation for specific support
182 on different platforms.
183
184 \table 60%
185 \header \li {3,1}
186 Common attributes
187 \header \li Value \li Description \li Type
188 \row \li Title \li The title of the media. \li QString
189 \row \li SubTitle \li The sub-title of the media. \li QString
190 \row \li Author \li The authors of the media. \li QStringList
191 \row \li Comment \li A user comment about the media. \li QString
192 \row \li Description \li A description of the media. \li QString
193 \row \li Category \li The category of the media. \li QStringList
194 \row \li Genre \li The genre of the media. \li QStringList
195 \row \li Year \li The year of release of the media. \li int
196 \row \li Date \li The date of the media. \li QDate.
197 \row \li UserRating \li A user rating of the media. \li int [0..100]
198 \row \li Keywords \li A list of keywords describing the media. \li QStringList
199 \row \li Language \li The language of media, as an ISO 639-2 code. \li QString
200
201 \row \li Publisher \li The publisher of the media. \li QString
202 \row \li Copyright \li The media's copyright notice. \li QString
203 \row \li ParentalRating \li The parental rating of the media. \li QString
204 \row \li RatingOrganization \li The organization responsible for the parental rating of the media.
205 \li QString
206
207 \header \li {3,1}
208 Media attributes
209 \row \li Size \li The size in bytes of the media. \li qint64
210 \row \li MediaType \li The type of the media (audio, video, etc). \li QString
211 \row \li Duration \li The duration in millseconds of the media. \li qint64
212
213 \header \li {3,1}
214 Audio attributes
215 \row \li AudioBitRate \li The bit rate of the media's audio stream in bits per second. \li int
216 \row \li AudioCodec \li The codec of the media's audio stream. \li QString
217 \row \li AverageLevel \li The average volume level of the media. \li int
218 \row \li ChannelCount \li The number of channels in the media's audio stream. \li int
219 \row \li PeakValue \li The peak volume of the media's audio stream. \li int
220 \row \li SampleRate \li The sample rate of the media's audio stream in hertz. \li int
221
222 \header \li {3,1}
223 Music attributes
224 \row \li AlbumTitle \li The title of the album the media belongs to. \li QString
225 \row \li AlbumArtist \li The principal artist of the album the media belongs to. \li QString
226 \row \li ContributingArtist \li The artists contributing to the media. \li QStringList
227 \row \li Composer \li The composer of the media. \li QStringList
228 \row \li Conductor \li The conductor of the media. \li QString
229 \row \li Lyrics \li The lyrics to the media. \li QString
230 \row \li Mood \li The mood of the media. \li QString
231 \row \li TrackNumber \li The track number of the media. \li int
232 \row \li TrackCount \li The number of tracks on the album containing the media. \li int
233
234 \row \li CoverArtUrlSmall \li The URL of a small cover art image. \li QUrl
235 \row \li CoverArtUrlLarge \li The URL of a large cover art image. \li QUrl
236 \row \li CoverArtImage \li An embedded cover art image. \li QImage
237
238 \header \li {3,1}
239 Image and video attributes
240 \row \li Resolution \li The dimensions of an image or video. \li QSize
241 \row \li PixelAspectRatio \li The pixel aspect ratio of an image or video. \li QSize
242 \row \li Orientation \li Orientation of an image or video. \li int (degrees)
243
244 \header \li {3,1}
245 Video attributes
246 \row \li VideoFrameRate \li The frame rate of the media's video stream. \li qreal
247 \row \li VideoBitRate \li The bit rate of the media's video stream in bits per second. \li int
248 \row \li VideoCodec \li The codec of the media's video stream. \li QString
249
250 \row \li PosterUrl \li The URL of a poster image. \li QUrl
251 \row \li PosterImage \li An embedded poster image. \li QImage
252
253 \header \li {3,1}
254 Movie attributes
255 \row \li ChapterNumber \li The chapter number of the media. \li int
256 \row \li Director \li The director of the media. \li QString
257 \row \li LeadPerformer \li The lead performer in the media. \li QStringList
258 \row \li Writer \li The writer of the media. \li QStringList
259
260 \header \li {3,1}
261 Photo attributes.
262 \row \li CameraManufacturer \li The manufacturer of the camera used to capture the media. \li QString
263 \row \li CameraModel \li The model of the camera used to capture the media. \li QString
264 \row \li Event \li The event during which the media was captured. \li QString
265 \row \li Subject \li The subject of the media. \li QString
266 \row \li ExposureTime \li Exposure time, given in seconds. \li qreal
267 \row \li FNumber \li The F Number. \li int
268 \row \li ExposureProgram
269 \li The class of the program used by the camera to set exposure when the picture is taken. \li QString
270 \row \li ISOSpeedRatings
271 \li Indicates the ISO Speed and ISO Latitude of the camera or input device as specified in ISO 12232. \li qreal
272 \row \li ExposureBiasValue
273 \li The exposure bias.
274 The unit is the APEX (Additive System of Photographic Exposure) setting. \li qreal
275 \row \li DateTimeOriginal \li The date and time when the original image data was generated. \li QDateTime
276 \row \li DateTimeDigitized \li The date and time when the image was stored as digital data. \li QDateTime
277 \row \li SubjectDistance \li The distance to the subject, given in meters. \li qreal
278 \row \li MeteringMode \li The metering mode. \li QCameraExposure::MeteringMode
279 \row \li LightSource
280 \li The kind of light source. \li QString
281 \row \li Flash
282 \li Status of flash when the image was shot. \li QCameraExposure::FlashMode
283 \row \li FocalLength
284 \li The actual focal length of the lens, in mm. \li qreal
285 \row \li ExposureMode
286 \li Indicates the exposure mode set when the image was shot. \li QCameraExposure::ExposureMode
287 \row \li WhiteBalance
288 \li Indicates the white balance mode set when the image was shot. \li QCameraImageProcessing::WhiteBalanceMode
289 \row \li DigitalZoomRatio
290 \li Indicates the digital zoom ratio when the image was shot. \li qreal
291 \row \li FocalLengthIn35mmFilm
292 \li Indicates the equivalent focal length assuming a 35mm film camera, in mm. \li qreal
293 \row \li SceneCaptureType
294 \li Indicates the type of scene that was shot.
295 It can also be used to record the mode in which the image was shot. \li QString
296 \row \li GainControl
297 \li Indicates the degree of overall image gain adjustment. \li qreal
298 \row \li Contrast
299 \li Indicates the direction of contrast processing applied by the camera when the image was shot. \li qreal
300 \row \li Saturation
301 \li Indicates the direction of saturation processing applied by the camera when the image was shot. \li qreal
302 \row \li Sharpness
303 \li Indicates the direction of sharpness processing applied by the camera when the image was shot. \li qreal
304 \row \li DeviceSettingDescription
305 \li Exif tag, indicates information on the picture-taking conditions of a particular camera model. \li QString
306
307 \row \li GPSLatitude
308 \li Latitude value of the geographical position (decimal degrees).
309 A positive latitude indicates the Northern Hemisphere,
310 and a negative latitude indicates the Southern Hemisphere. \li double
311 \row \li GPSLongitude
312 \li Longitude value of the geographical position (decimal degrees).
313 A positive longitude indicates the Eastern Hemisphere,
314 and a negative longitude indicates the Western Hemisphere. \li double
315 \row \li GPSAltitude
316 \li The value of altitude in meters above sea level. \li double
317 \row \li GPSTimeStamp
318 \li Time stamp of GPS data. \li QDateTime
319 \row \li GPSSatellites
320 \li GPS satellites used for measurements. \li QString
321 \row \li GPSStatus
322 \li Status of GPS receiver at image creation time. \li QString
323 \row \li GPSDOP
324 \li Degree of precision for GPS data. \li qreal
325 \row \li GPSSpeed
326 \li Speed of GPS receiver movement in kilometers per hour. \li qreal
327 \row \li GPSTrack
328 \li Direction of GPS receiver movement.
329 The range of values is [0.0, 360),
330 with 0 direction pointing on either true or magnetic north,
331 depending on GPSTrackRef. \li qreal
332 \row \li GPSTrackRef
333 \li Reference for movement direction. \li QChar.
334 'T' means true direction and 'M' is magnetic direction.
335 \row \li GPSImgDirection
336 \li Direction of image when captured. \li qreal
337 The range of values is [0.0, 360).
338 \row \li GPSImgDirectionRef
339 \li Reference for image direction. \li QChar.
340 'T' means true direction and 'M' is magnetic direction.
341 \row \li GPSMapDatum
342 \li Geodetic survey data used by the GPS receiver. \li QString
343 \row \li GPSProcessingMethod
344 \li The name of the method used for location finding. \li QString
345 \row \li GPSAreaInformation
346 \li The name of the GPS area. \li QString
347
348 \row \li ThumbnailImage \li An embedded thumbnail image. \li QImage
349 \endtable
350*/
351
352QT_END_NAMESPACE
353

source code of qtmultimedia/src/multimedia/qmediametadata.cpp