зеркало из https://github.com/mozilla/gecko-dev.git
455 строки
16 KiB
Plaintext
455 строки
16 KiB
Plaintext
/* -*- Mode: IDL; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
|
|
/* vim: set ts=2 et sw=2 tw=80: */
|
|
/* This Source Code Form is subject to the terms of the Mozilla Public
|
|
* License, v. 2.0. If a copy of the MPL was not distributed with this file,
|
|
* You can obtain one at http://mozilla.org/MPL/2.0/.
|
|
*/
|
|
|
|
/* Camera regions are used to set focus and metering areas;
|
|
the coordinates are referenced to the sensor:
|
|
(-1000, -1000) is the top-left corner
|
|
(1000, 1000) is the bottom-right corner
|
|
The weight of the region can range from 0 to 1000. */
|
|
dictionary CameraRegion
|
|
{
|
|
long top = -1000;
|
|
long left = -1000;
|
|
long bottom = 1000;
|
|
long right = 1000;
|
|
unsigned long weight = 1000;
|
|
};
|
|
|
|
/* The position information to record in the image header.
|
|
'NaN' indicates the information is not available. */
|
|
dictionary CameraPosition
|
|
{
|
|
unrestricted double latitude = NaN;
|
|
unrestricted double longitude = NaN;
|
|
unrestricted double altitude = NaN;
|
|
unrestricted double timestamp = NaN;
|
|
};
|
|
|
|
/*
|
|
Options for takePicture().
|
|
*/
|
|
dictionary CameraPictureOptions
|
|
{
|
|
/* an object with a combination of 'height' and 'width' properties
|
|
chosen from CameraCapabilities.pictureSizes */
|
|
CameraSize pictureSize = null;
|
|
|
|
/* one of the file formats chosen from
|
|
CameraCapabilities.fileFormats */
|
|
DOMString fileFormat = "";
|
|
|
|
/* the rotation of the image in degrees, from 0 to 270 in
|
|
steps of 90; this doesn't affect the image, only the
|
|
rotation recorded in the image header.*/
|
|
long rotation = 0;
|
|
|
|
/* an object containing any or all of 'latitude', 'longitude',
|
|
'altitude', and 'timestamp', used to record when and where
|
|
the image was taken. e.g.
|
|
{
|
|
latitude: 43.647118,
|
|
longitude: -79.3943,
|
|
altitude: 500
|
|
// timestamp not specified, in this case, and
|
|
// won't be included in the image header
|
|
}
|
|
|
|
can be null in the case where position information isn't
|
|
available/desired.
|
|
|
|
'altitude' is in metres; 'timestamp' is UTC, in seconds from
|
|
January 1, 1970.
|
|
*/
|
|
CameraPosition position = null;
|
|
|
|
/* the number of seconds from January 1, 1970 UTC. This can be
|
|
different from the positional timestamp (above). */
|
|
// XXXbz this should really accept a date too, no?
|
|
long long dateTime = 0;
|
|
};
|
|
|
|
/* These properties affect the actual video recording, e.g.
|
|
{
|
|
rotation: 0,
|
|
maxFileSizeBytes: 1024 * 1024,
|
|
maxVideoLengthMs: 0
|
|
}
|
|
|
|
'rotation' is the degrees clockwise to rotate the recorded video; if
|
|
this options is not supported, it will be ignored; if this option is
|
|
missing, the default is 0.
|
|
|
|
'maxFileSizeBytes' is the maximum size in bytes to which the recorded
|
|
video file will be allowed to grow.
|
|
|
|
'maxVideoLengthMs' is the maximum length in milliseconds to which the
|
|
recorded video will be allowed to grow.
|
|
|
|
if either 'maxFileSizeBytes' or 'maxVideoLengthMs' is missing, zero,
|
|
or negative, that limit will be disabled.
|
|
*/
|
|
dictionary CameraStartRecordingOptions
|
|
{
|
|
long rotation = 0;
|
|
long long maxFileSizeBytes = 0;
|
|
long long maxVideoLengthMs = 0;
|
|
|
|
/* If startRecording() is called with flashMode set to "auto" and the
|
|
camera has determined that the scene is poorly lit, the flash mode
|
|
will be automatically changed to "torch" until stopRecording() is
|
|
called. During this time, flashMode will reflect the new setting. If
|
|
flashMode is changed while recording is in progress, the new setting
|
|
will be left as-is on stopRecording(). If the camera does not
|
|
support this setting, it will be ignored. */
|
|
boolean autoEnableLowLightTorch = false;
|
|
};
|
|
|
|
callback CameraSetConfigurationCallback = void (CameraConfiguration configuration);
|
|
callback CameraAutoFocusCallback = void (boolean focused);
|
|
callback CameraTakePictureCallback = void (Blob picture);
|
|
callback CameraStartRecordingCallback = void ();
|
|
callback CameraShutterCallback = void ();
|
|
callback CameraClosedCallback = void ();
|
|
callback CameraReleaseCallback = void ();
|
|
callback CameraRecorderStateChange = void (DOMString newState);
|
|
callback CameraPreviewStateChange = void (DOMString newState);
|
|
callback CameraAutoFocusMovingCallback = void (boolean isMoving);
|
|
|
|
/*
|
|
attributes here affect the preview, any pictures taken, and/or
|
|
any video recorded by the camera.
|
|
*/
|
|
[Func="nsDOMCameraControl::HasSupport"]
|
|
interface CameraControl : MediaStream
|
|
{
|
|
[Constant, Cached]
|
|
readonly attribute CameraCapabilities capabilities;
|
|
|
|
/* one of the values chosen from capabilities.effects;
|
|
default is "none" */
|
|
[Throws]
|
|
attribute DOMString effect;
|
|
|
|
/* one of the values chosen from capabilities.whiteBalanceModes;
|
|
default is "auto" */
|
|
[Throws]
|
|
attribute DOMString whiteBalanceMode;
|
|
|
|
/* one of the values chosen from capabilities.sceneModes;
|
|
default is "auto" */
|
|
[Throws]
|
|
attribute DOMString sceneMode;
|
|
|
|
/* one of the values chosen from capabilities.flashModes;
|
|
default is "auto" */
|
|
[Throws]
|
|
attribute DOMString flashMode;
|
|
|
|
/* one of the values chosen from capabilities.focusModes;
|
|
default is "auto", if supported, or "fixed" */
|
|
[Throws]
|
|
attribute DOMString focusMode;
|
|
|
|
/* one of the values chosen from capabilities.zoomRatios; other
|
|
values will be rounded to the nearest supported value;
|
|
default is 1.0 */
|
|
[Throws]
|
|
attribute double zoom;
|
|
|
|
/* an array of one or more objects that define where the
|
|
camera will perform light metering, each defining the properties:
|
|
{
|
|
top: -1000,
|
|
left: -1000,
|
|
bottom: 1000,
|
|
right: 1000,
|
|
weight: 1000
|
|
}
|
|
|
|
'top', 'left', 'bottom', and 'right' all range from -1000 at
|
|
the top-/leftmost of the sensor to 1000 at the bottom-/rightmost
|
|
of the sensor.
|
|
|
|
objects missing one or more of these properties will be ignored;
|
|
if the array contains more than capabilities.maxMeteringAreas,
|
|
extra areas will be ignored.
|
|
|
|
if this setter is called with no arguments, the camera will
|
|
determine metering areas on its own. */
|
|
[Throws]
|
|
sequence<CameraRegion> getMeteringAreas();
|
|
[Throws]
|
|
void setMeteringAreas(optional sequence<CameraRegion> meteringAreas);
|
|
|
|
/* an array of one or more objects that define where the camera will
|
|
perform auto-focusing, with the same definition as meteringAreas.
|
|
|
|
if the array contains more than capabilities.maxFocusAreas, extra
|
|
areas will be ignored.
|
|
|
|
if this setter is called with no arguments, the camera will
|
|
determine focus areas on its own. */
|
|
[Throws]
|
|
sequence<CameraRegion> getFocusAreas();
|
|
[Throws]
|
|
void setFocusAreas(optional sequence<CameraRegion> focusAreas);
|
|
|
|
/* focal length in millimetres */
|
|
[Throws]
|
|
readonly attribute double focalLength;
|
|
|
|
/* the distances in metres to where the image subject appears to be
|
|
in focus. 'focusDistanceOptimum' is where the subject will appear
|
|
sharpest; the difference between 'focusDistanceFar' and
|
|
'focusDistanceNear' is the image's depth of field.
|
|
|
|
'focusDistanceFar' may be infinity. */
|
|
[Throws]
|
|
readonly attribute double focusDistanceNear;
|
|
[Throws]
|
|
readonly attribute double focusDistanceOptimum;
|
|
[Throws]
|
|
readonly attribute unrestricted double focusDistanceFar;
|
|
|
|
/* 'compensation' is optional, and if missing, will
|
|
set the camera to use automatic exposure compensation.
|
|
|
|
acceptable values must range from minExposureCompensation
|
|
to maxExposureCompensation in steps of stepExposureCompensation;
|
|
invalid values will be rounded to the nearest valid value. */
|
|
[Throws]
|
|
void setExposureCompensation(optional double compensation);
|
|
[Throws]
|
|
readonly attribute unrestricted double exposureCompensation;
|
|
|
|
/* one of the values chosen from capabilities.isoModes; default
|
|
value is "auto" if supported. */
|
|
[Throws]
|
|
attribute DOMString isoMode;
|
|
|
|
/* the function to call on the camera's shutter event, to trigger
|
|
a shutter sound and/or a visual shutter indicator. */
|
|
attribute CameraShutterCallback? onShutter;
|
|
|
|
/* the function to call when the camera hardware is closed
|
|
by the underlying framework, e.g. when another app makes a more
|
|
recent call to get the camera. */
|
|
attribute CameraClosedCallback? onClosed;
|
|
|
|
/* the function to call when the recorder changes state, either because
|
|
the recording process encountered an error, or because one of the
|
|
recording limits (see CameraStartRecordingOptions) was reached. */
|
|
attribute CameraRecorderStateChange? onRecorderStateChange;
|
|
|
|
/* the function to call when the viewfinder stops or starts,
|
|
useful for synchronizing other UI elements. */
|
|
attribute CameraPreviewStateChange? onPreviewStateChange;
|
|
|
|
/* the attribute is deprecated in favour of get/setPictureSize.
|
|
|
|
the size of the picture to be returned by a call to takePicture();
|
|
an object with 'height' and 'width' properties that corresponds to
|
|
one of the options returned by capabilities.pictureSizes. */
|
|
[Throws]
|
|
attribute any pictureSize;
|
|
[Throws]
|
|
CameraSize getPictureSize();
|
|
[Throws]
|
|
void setPictureSize(optional CameraSize size);
|
|
|
|
/* the attribute is deprecated in favour of get/setThumbnailSize.
|
|
|
|
the size of the thumbnail to be included in the picture returned
|
|
by a call to takePicture(), assuming the chosen fileFormat supports
|
|
one; an object with 'height' and 'width' properties that corresponds
|
|
to one of the options returned by capabilities.pictureSizes.
|
|
|
|
this setting should be considered a hint: the implementation will
|
|
respect it when possible, and override it if necessary. */
|
|
[Throws]
|
|
attribute any thumbnailSize;
|
|
[Throws]
|
|
CameraSize getThumbnailSize();
|
|
[Throws]
|
|
void setThumbnailSize(optional CameraSize size);
|
|
|
|
/* the angle, in degrees, that the image sensor is mounted relative
|
|
to the display; e.g. if 'sensorAngle' is 270 degrees (or -90 degrees),
|
|
then the preview stream needs to be rotated +90 degrees to have the
|
|
same orientation as the real world. */
|
|
readonly attribute long sensorAngle;
|
|
|
|
/* tell the camera to attempt to focus the image */
|
|
[Throws]
|
|
void autoFocus(CameraAutoFocusCallback onSuccess, optional CameraErrorCallback onError);
|
|
|
|
/* if continuous autofocus is supported and focusMode is set to enable it,
|
|
then this function is called whenever the camera decides to start and
|
|
stop moving the focus position; it can be used to update a UI element to
|
|
indicate that the camera is still trying to focus, or has finished. Some
|
|
platforms do not support this event, in which case the callback is never
|
|
invoked. */
|
|
[Pref="camera.control.autofocus_moving_callback.enabled"]
|
|
attribute CameraAutoFocusMovingCallback? onAutoFocusMoving;
|
|
|
|
/* capture an image and return it as a blob to the 'onSuccess' callback;
|
|
if the camera supports it, this may be invoked while the camera is
|
|
already recording video.
|
|
|
|
invoking this function will stop the preview stream, which must be
|
|
manually restarted (e.g. by calling .play() on it). */
|
|
[Throws]
|
|
void takePicture(CameraPictureOptions aOptions,
|
|
CameraTakePictureCallback onSuccess,
|
|
optional CameraErrorCallback onError);
|
|
|
|
/* start recording video; 'aOptions' is a
|
|
CameraStartRecordingOptions object. */
|
|
[Throws]
|
|
void startRecording(CameraStartRecordingOptions aOptions,
|
|
DeviceStorage storageArea,
|
|
DOMString filename,
|
|
CameraStartRecordingCallback onSuccess,
|
|
optional CameraErrorCallback onError);
|
|
|
|
/* stop precording video. */
|
|
[Throws]
|
|
void stopRecording();
|
|
|
|
/* call in or after the takePicture() onSuccess callback to
|
|
resume the camera preview stream. */
|
|
[Throws]
|
|
void resumePreview();
|
|
|
|
/* release the camera so that other applications can use it; you should
|
|
probably call this whenever the camera is not longer in the foreground
|
|
(depending on your usage model).
|
|
|
|
the callbacks are optional, unless you really need to know when
|
|
the hardware is ultimately released.
|
|
|
|
once this is called, the camera control object is to be considered
|
|
defunct; a new instance will need to be created to access the camera. */
|
|
[Throws]
|
|
void release(optional CameraReleaseCallback onSuccess,
|
|
optional CameraErrorCallback onError);
|
|
|
|
/* changes the camera configuration on the fly;
|
|
'configuration' is of type CameraConfiguration.
|
|
|
|
XXXmikeh the 'configuration' argument needs to be optional, else
|
|
the WebIDL compiler throws: "WebIDL.WebIDLError: error: Dictionary
|
|
argument or union argument containing a dictionary not followed by
|
|
a required argument must be optional"
|
|
*/
|
|
[Throws]
|
|
void setConfiguration(optional CameraConfiguration configuration,
|
|
optional CameraSetConfigurationCallback onSuccess,
|
|
optional CameraErrorCallback onError);
|
|
|
|
/* if focusMode is set to either 'continuous-picture' or 'continuous-video',
|
|
then calling autoFocus() will trigger its onSuccess callback immediately
|
|
if the camera was either successfully focused, or if no focus could be
|
|
acquired; if the focus acquisition is still in progress, the onSuccess
|
|
callback will be invoked later, its argument indicating success or
|
|
failure.
|
|
|
|
once autoFocus() is called with a continuous autofocus mode set, the
|
|
continuous autofocus process is stopped and focus is locked in the
|
|
current state until this method is called.
|
|
*/
|
|
[Throws]
|
|
void resumeContinuousFocus();
|
|
};
|
|
|
|
/* The information of the each face detected by a camera device, e.g.
|
|
{
|
|
id: 1,
|
|
score: 80,
|
|
bound: { left: -203,
|
|
top: -400,
|
|
right: 300,
|
|
bottom: 250 },
|
|
leftEye: { x: -100,
|
|
y: -200 },
|
|
rightEye: { x: 100,
|
|
y: 100 },
|
|
mouth: { x: 150,
|
|
y: 150 } }
|
|
|
|
'id' is an unique value per face while the face is visible to the tracker.
|
|
If the face leaves the viewfinder and then returns, it will be assigned
|
|
a new value.
|
|
|
|
'score' is the confidence level for the detection of the face.
|
|
This range is 1 to 100, where 100 is the highest confidence.
|
|
|
|
'bounds' is the bounds of the face. It is guaranteed left < right and
|
|
top < bottom. The coordinates can be smaller than -1000 or bigger than 1000.
|
|
But at least one vertex will be within (-1000, -1000) and (1000, 1000).
|
|
|
|
'leftEye' is the coordinates of the centre of the left eye. The coordinates
|
|
are in the same space as the ones for 'bounds'. This is an optional field
|
|
and may not be supported on all devices. If it is not supported or detected,
|
|
the value will be set to null. The x and y coordinates are bounded by the
|
|
range (-1000, 1000) where:
|
|
{ x: -1000, y: -1000 } is the top-left corner
|
|
{ x: 1000, y: 1000 } is the bottom-right corner
|
|
|
|
'rightEye' is the coordinates of the detected right eye; null if not
|
|
supported or detected. Same boundary conditions as 'leftEye'.
|
|
|
|
'mouth' is the coordinates of the detected mouth; null if not supported or
|
|
detected. Same boundary conditions as 'leftEye'.
|
|
*/
|
|
[Pref="camera.control.face_detection.enabled", Func="DOMCameraDetectedFace::HasSupport"]
|
|
interface CameraDetectedFace
|
|
{
|
|
readonly attribute unsigned long id;
|
|
|
|
readonly attribute unsigned long score;
|
|
|
|
readonly attribute DOMRect bounds;
|
|
|
|
readonly attribute boolean hasLeftEye;
|
|
readonly attribute DOMPoint? leftEye;
|
|
|
|
readonly attribute boolean hasRightEye;
|
|
readonly attribute DOMPoint? rightEye;
|
|
|
|
readonly attribute boolean hasMouth;
|
|
readonly attribute DOMPoint? mouth;
|
|
};
|
|
|
|
callback CameraFaceDetectionCallback = void (sequence<CameraDetectedFace> faces);
|
|
|
|
partial interface CameraControl
|
|
{
|
|
/* Starts the face detection. This should be called after the preview is
|
|
started. The camera will periodically call 'onFacesDetected' with a
|
|
sequence of zero or one or more detected faces in the preview frame.
|
|
|
|
How often the callback is invoked is implementation dependent.
|
|
|
|
This method throws an exception if face detection fails to start.
|
|
*/
|
|
[Throws, Pref="camera.control.face_detection.enabled"]
|
|
void startFaceDetection();
|
|
|
|
/* Stops the face detection.
|
|
|
|
This method throws an exception if face detection can't be stopped.
|
|
*/
|
|
[Throws, Pref="camera.control.face_detection.enabled"]
|
|
void stopFaceDetection();
|
|
|
|
/* Callback for faces detected in the preview frame. If no faces are
|
|
detected, the callback is invoked with an empty sequence. */
|
|
[Pref="camera.control.face_detection.enabled"]
|
|
attribute CameraFaceDetectionCallback? onFacesDetected;
|
|
};
|