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CaptureMetadata.h
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28 
29 /**
30  * @file
31  * <b>Libargus API: Capture Metadata API</b>
32  *
33  * @b Description: Defines the CaptureMetadata objects and interfaces.
34  */
35 
36 #ifndef _ARGUS_CAPTURE_METADATA_H
37 #define _ARGUS_CAPTURE_METADATA_H
38 
39 namespace Argus
40 {
41 
42 /**
43  * Container for metadata generated by a single completed capture.
44  *
45  * @defgroup ArgusCaptureMetadata CaptureMetadata
46  * @ingroup ArgusObjects
47  */
49 {
50 protected:
52 };
53 
54 /**
55  * An object that holds a CaptureMetadata instance
56  * and is used to read the capture metadata from a consumer thread directly from
57  * the embedded EGLStream metadata. It exposes the same interfaces as
58  * CaptureMetadata, but is owned by the consumer.
59  */
61 {
62 protected:
64 };
65 
66 /**
67  * @class IBayerHistogram
68  *
69  * Interface to Bayer histogram metadata (provided by ICaptureMetadata::getBayerHistogram()).
70  *
71  * Bins are evenly distributed across the possible range of values, each containing
72  * the number of pixels whose value fell within the range for that bin.
73  *
74  * @ingroup ArgusBayerHistogram
75  */
76 DEFINE_UUID(InterfaceID, IID_BAYER_HISTOGRAM, 50bc4f1c,6424,beb7,baae,b0,90,c9,c3,25,9e);
77 class IBayerHistogram : public Interface
78 {
79 public:
80 
81  static const InterfaceID& id() { return IID_BAYER_HISTOGRAM; }
82 
83  /**
84  * Returns the number of bins in the histogram.
85  */
86  virtual uint32_t getBinCount() const = 0;
87 
88  /**
89  * Returns the histogram data.
90  *
91  * @param[out] histogram The output vector to store the histogram data. Upon successful
92  * return, this vector will be replaced with getBinCount() bin values,
93  * each containing per-channel pixel counts within a BayerTuple container.
94  */
95  virtual Status getHistogram(std::vector< BayerTuple<uint32_t> >* histogram) const = 0;
96 
97 protected:
98 
100 };
101 
102 /**
103  * @class IRGBHistogram
104  *
105  * Interface to RGB histogram metadata (provided by ICaptureMetadata::getRGBHistogram()).
106  *
107  * Bins are evenly distributed across the possible range of values, each containing
108  * the number of pixels whose value fell within the range for that bin.
109  *
110  * @ingroup ArgusRGBHistogram
111  */
112 DEFINE_UUID(InterfaceID, IID_RGB_HISTOGRAM, 50bc4f1d,6424,beb7,baae,b0,90,c9,c3,25,9e);
113 class IRGBHistogram : public Interface
114 {
115 public:
116 
117  static const InterfaceID& id() { return IID_RGB_HISTOGRAM; }
118 
119  /**
120  * Returns the number of bins in the histogram.
121  */
122  virtual uint32_t getBinCount() const = 0;
123 
124  /**
125  * Returns the histogram data.
126  *
127  * @param[out] histogram The output vector to store the histogram data. Upon successful
128  * return, this vector will be replaced with getBinCount() bin values,
129  * each containing per-channel pixel counts within an RGBTuple container.
130  */
131  virtual Status getHistogram(std::vector< RGBTuple<uint32_t> >* histogram) const = 0;
132 
133 protected:
134 
136 };
137 
138 /**
139  * @class IStreamCaptureMetadata
140  *
141  * Interface to per-stream metadata (provided by ICaptureMetadata::getStreamMetadata()).
142  *
143  * @ingroup ArgusStreamCaptureMetadata
144  */
145 DEFINE_UUID(InterfaceID, IID_STREAM_CAPTURE_METADATA, 61cbe0a8,0ee1,4c67,baae,02,02,1a,b8,d9,47);
147 {
148 public:
149 
150  static const InterfaceID& id() { return IID_STREAM_CAPTURE_METADATA; }
151 
152  /**
153  * Returns the clip rectangle used for this stream.
154  */
155  virtual Rectangle<float> getSourceClipRect() const = 0;
156 
157 protected:
158 
160 };
161 
162 /**
163  * @class ICaptureMetadata
164  *
165  * Interface to the core capture metadata.
166  *
167  * @ingroup ArgusCaptureMetadata
168  *
169  * @defgroup ArgusStreamCaptureMetadata StreamMetadata
170  * Child stream metadata, returned by ICaptureMetadata::getStreamMetadata
171  * @ingroup ArgusCaptureMetadata
172  *
173  * @defgroup ArgusRGBHistogram RGBHistogram
174  * Child RGB histogram metadata, returned by ICaptureMetadata::getRGBHistogram
175  * @ingroup ArgusCaptureMetadata
176  *
177  * @defgroup ArgusBayerHistogram BayerHistogram
178  * Child Bayer histogram metadata, returned by ICaptureMetadata::getBayerHistogram
179  * @ingroup ArgusCaptureMetadata
180  */
181 DEFINE_UUID(InterfaceID, IID_CAPTURE_METADATA, 5f6ac5d4,59e8,45d0,8bac,38,09,1f,f8,74,a9);
183 {
184 public:
185 
186  static const InterfaceID& id() { return IID_CAPTURE_METADATA; }
187 
188  static const uint32_t NUM_COLOR_CORRECTION_ELEMENTS = 9;
189  static const uint32_t NUM_AWB_WB_ESTIMATE_ELEMENTS = 4;
190 
191  /**
192  * Returns the capture id (the value returned from ICaptureSession::capture())
193  * of the capture that generated this metadata.
194  */
195  virtual uint32_t getCaptureId() const = 0;
196 
197  /**
198  * Returns the @c clientData value for the Request used in the capture
199  * that generated this metadata.
200  *
201  * @see ICaptureSession::createRequest()
202  */
203  virtual uint32_t getClientData() const = 0;
204 
205  /**
206  * Returns the per-stream metadata provider for @c stream.
207  * This object will provide the IStreamCaptureMetadata interface.
208  */
209  virtual InterfaceProvider* getStreamMetadata(const OutputStream* stream) const = 0;
210 
211  /**
212  * Returns the Bayer histogram for this capture.
213  * This object will provide the IBayerHistogram interface.
214  */
215  virtual const InterfaceProvider* getBayerHistogram() const = 0;
216 
217  /**
218  * Returns the RGB histogram for this capture.
219  * This object will provide the IRGBHistogram interface.
220  */
221  virtual const InterfaceProvider* getRGBHistogram() const = 0;
222 
223  /**
224  * Returns true if and only if AE was locked for this capture.
225  */
226  virtual bool getAeLocked() const = 0;
227 
228  /**
229  * Gets the AE regions of interest used for this capture.
230  *
231  * @param[in] regions A vector that will be populated with the AE regions used in capture.
232  *
233  * @returns success/status of the call.
234  */
235  virtual Status getAeRegions(std::vector<AcRegion>* regions) const = 0;
236 
237  /**
238  * Returns the state of AE when it ran for this capture.
239  */
240  virtual AeState getAeState() const = 0;
241 
242  /**
243  * Returns the focuser position used for this capture (in focuser steps).
244  */
245  virtual int32_t getFocuserPosition() const = 0;
246 
247  /**
248  * Returns the CCT calculated by AWB for this capture.
249  */
250  virtual uint32_t getAwbCct() const = 0;
251 
252  /**
253  * Returns the AWB gains used for this capture.
254  */
255  virtual BayerTuple<float> getAwbGains() const = 0;
256 
257  /**
258  * Returns the AWB mode used for this capture.
259  */
260  virtual AwbMode getAwbMode() const = 0;
261 
262  /**
263  * Gets the AWB regions of interest used for this capture.
264  *
265  * @param[in] regions A vector that will be populated with the AWB regions used in capture.
266  *
267  * @returns success/status of the call.
268  */
269  virtual Status getAwbRegions(std::vector<AcRegion>* regions) const = 0;
270 
271  /**
272  * @returns the state of AWB when it ran for this capture.
273  */
274  virtual AwbState getAwbState() const = 0;
275 
276  /**
277  * Gets the current AWB WB estimate as a vector of NUM_AWB_WB_ESTIMATE_ELEMENTS values.
278  * @todo Document the meaning of an AWB WB estimate.
279  *
280  * @param[in] estimate A vector that will be populated with the AWB WB estimates.
281  *
282  * @returns success/status of the call.
283  */
284  virtual Status getAwbWbEstimate(std::vector<float>* estimate) const = 0;
285 
286  /**
287  * Returns the enable state for the client-supplied Color Correction Matrix.
288  */
289  virtual bool getColorCorrectionMatrixEnable() const = 0;
290 
291  /**
292  * Gets the 3x3 client-supplied Color Correction Matrix as a flattened
293  * (row-major) vector of 9 values. This matrix is irrelevant if
294  * <tt>getColorCorrectionMatrixEnable() == false</tt>.
295  *
296  * @param[in] ccMatrix A vector that will be populated with the color correction matrix.
297  *
298  * @returns success/status of the call.
299  */
300  virtual Status getColorCorrectionMatrix(std::vector<float>* ccMatrix) const = 0;
301 
302  /**
303  * Returns the color saturation value used for this capture (including biasing).
304  */
305  virtual float getColorSaturation() const = 0;
306 
307  /**
308  * Returns the time it took to integrate this capture (in nanoseconds).
309  * @todo Provide a more precise description of frame duration.
310  */
311  virtual uint64_t getFrameDuration() const = 0;
312 
313  /**
314  * Returns the digital gain used for this capture.
315  */
316  virtual float getIspDigitalGain() const = 0;
317 
318  /**
319  * Returns the frame readout time for this capture (in nanoseconds) from
320  * the beginning of the first line to the beginning of the last line.
321  */
322  virtual uint64_t getFrameReadoutTime() const = 0;
323 
324  /**
325  * Returns the estimated scene brightness for this capture (in lux).
326  */
327  virtual float getSceneLux() const = 0;
328 
329  /**
330  * Returns the sensor analog gain used for this capture.
331  */
332  virtual float getSensorAnalogGain() const = 0;
333 
334  /**
335  * Returns the sensor exposure time for this capture (in nanoseconds).
336  */
337  virtual uint64_t getSensorExposureTime() const = 0;
338 
339  /**
340  * Returns the ISO value used for this capture.
341  */
342  virtual uint32_t getSensorSensitivity() const = 0;
343 
344  /**
345  * Returns the start timestamp for the sensor (in nanoseconds).
346  * This is the time that the first data from this capture arrives from the sensor.
347  */
348  virtual uint64_t getSensorTimestamp() const = 0;
349 
350  /**
351  * Returns true if and only if a user-specified tone map curve was used for this capture.
352  */
353  virtual bool getToneMapCurveEnabled() const = 0;
354 
355  /**
356  * Returns the specified color channel for the tone mapping table
357  * (as a vector of NUM_TONE_MAP_ELEMENTS values). These values are irrelevant if
358  * <tt>getToneMapCurveEnabled() == false</tt>.
359  *
360  * @param[in] channel Specified the color channel for which the curve will be returned.
361  * @param[in] curve A vector that will be populated with the color curve used in capture.
362  *
363  * @returns success/status of the call.
364  */
365  virtual Status getToneMapCurve(RGBChannel channel, std::vector<float>* curve) const = 0;
366 
367 protected:
369 };
370 
371 /**
372  * @class IDenoiseMetadata
373  *
374  * Interface to denoise metadata.
375  *
376  * @ingroup ArgusCaptureMetadata
377  */
378 DEFINE_UUID(InterfaceID, IID_DENOISE_METADATA, 7A461D23,6AE1,11E6,BDF4,08,00,20,0C,9A,66);
380 {
381 public:
382  static const InterfaceID& id() { return IID_DENOISE_METADATA; }
383 
384  /**
385  * Returns the denoise mode used for the capture.
386  */
387  virtual DenoiseMode getDenoiseMode() const = 0;
388 
389  /**
390  * Returns the denoise strength used for the capture.
391  */
392  virtual float getDenoiseStrength() const = 0;
393 
394 protected:
396 };
397 
398 /**
399  * @class IEdgeEnhanceMetadata
400  *
401  * Interface to edge enhancement metadata.
402  *
403  * @ingroup ArgusCaptureMetadata
404  */
405 DEFINE_UUID(InterfaceID, IID_EDGE_ENHANCE_METADATA, 7A461D24,6AE1,11E6,BDF4,08,00,20,0C,9A,66);
407 {
408 public:
409  static const InterfaceID& id() { return IID_EDGE_ENHANCE_METADATA; }
410 
411  /**
412  * Returns the edge enhancement mode used for the capture.
413  */
414  virtual EdgeEnhanceMode getEdgeEnhanceMode() const = 0;
415 
416  /**
417  * Returns the edge enhancement strength used for the capture.
418  */
419  virtual float getEdgeEnhanceStrength() const = 0;
420 
421 protected:
423 };
424 
425 /**
426  * @class IVideoStabilizationMetadata
427  *
428  * Interface to video stabilization metadata.
429  *
430  * @ingroup ArgusCaptureMetadata
431  */
432 DEFINE_UUID(InterfaceID, IID_VIDEO_STABILIZATION_METADATA, 7A461D25,6AE1,11E6,BDF4,08,00,20,0C,9A,66);
434 {
435 public:
436  static const InterfaceID& id() { return IID_VIDEO_STABILIZATION_METADATA; }
437 
438  /**
439  * Returns the video stabilization mode used for the capture.
440  */
441  virtual VideoStabilizationMode getVideoStabilizationMode() const = 0;
442 
443 protected:
445 };
446 
447 } // namespace Argus
448 
449 #endif // _ARGUS_CAPTURE_METADATA_H