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#include "domstubs.idl"
#include "nsIDOMMediaStream.idl"
#include "nsIDOMDOMRequest.idl"
interface nsIDOMBlob;
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interface nsIDOMDeviceStorage;
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/* Used to set the dimensions of a captured picture,
a preview stream, a video capture stream, etc. */
dictionary CameraSize {
unsigned long width;
unsigned long height;
};
/* 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 left corner
The weight of the region can range from 0 to 1000. */
dictionary CameraRegion {
long top;
long left;
long bottom;
long right;
unsigned long weight;
};
/* The position information to record in the image header.
'NaN' indicates the information is not available. */
dictionary CameraPosition {
double latitude;
double longitude;
double altitude;
double timestamp;
};
/* Select a camera to use. */
dictionary CameraSelector {
DOMString camera = "back";
};
[scriptable, uuid(64196840-0d03-4b65-a955-790f43a4b810)]
interface nsICameraCapabilities : nsISupports
{
/* an array of objects with 'height' and 'width' properties
supported for the preview stream */
[implicit_jscontext]
readonly attribute jsval previewSizes;
/* an array of objects with 'height' and 'width' properties
supported for picture taking */
[implicit_jscontext]
readonly attribute jsval pictureSizes;
/* an array of strings, e.g. [ "jpeg", "rgb565" ] */
[implicit_jscontext]
readonly attribute jsval fileFormats;
/* an array of strings, e.g. [ "auto", "fluorescent", etc. ] */
[implicit_jscontext]
readonly attribute jsval whiteBalanceModes;
/* an array of strings, e.g. [ "auto", "night", "beach", etc. ] */
[implicit_jscontext]
readonly attribute jsval sceneModes;
/* an array of strings, e.g. [ "normal", "sepia", "mono", etc. ] */
[implicit_jscontext]
readonly attribute jsval effects;
/* an array of strings, e.g. [ "auto", "off", "on", etc. ] */
[implicit_jscontext]
readonly attribute jsval flashModes;
/* an array of strings, e.g. [ "auto", "fixed", "macro", etc. ] */
[implicit_jscontext]
readonly attribute jsval focusModes;
/* the maximum number of focus areas supported by the camera */
[implicit_jscontext]
readonly attribute long maxFocusAreas;
/* the minimum supported exposure compensation value */
[implicit_jscontext]
readonly attribute double minExposureCompensation;
/* the maximum supported exposure compensation value */
[implicit_jscontext]
readonly attribute double maxExposureCompensation;
/* exposure compensation minimum step-size */
[implicit_jscontext]
readonly attribute double stepExposureCompensation;
/* the maximum number of metering areas supported by the camera */
[implicit_jscontext]
readonly attribute long maxMeteringAreas;
/* an array of doubles, e.g. [ 1.0, 1.2, 1.5, 2.0, 3.0, etc. ],
or null if zooming is not supported */
[implicit_jscontext]
readonly attribute jsval zoomRatios;
/* an array of objects with 'height' and 'width' properties
supported for video recording */
[implicit_jscontext]
readonly attribute jsval videoSizes;
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/* an object with attributes for each of the supported recorder
profiles, e.g. recorderProfiles.cif, recorderProfiles.qvga,
etc. */
[implicit_jscontext]
readonly attribute jsval recorderProfiles;
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};
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/* These properties only affect the captured image;
invalid property settings are ignored. */
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dictionary CameraPictureOptions
{
/* an object with a combination of 'height' and 'width' properties
chosen from nsICameraCapabilities.pictureSizes */
jsval pictureSize;
/* one of the file formats chosen from
nsICameraCapabilities.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;
/* 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.
*/
jsval position;
};
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/* These properties affect the video recording preview, e.g.
{
profile: "1080p",
rotation: 0
}
'profile' is one of the profiles returned by
nsICameraCapabilities.recorderProfiles'; if this profile is missing,
an arbitrary profile will be chosen.
'rotation' is the degrees clockwise to rotate the preview; if
this options is not supported, it will be ignored; if this option
is missing, the default is 0.
*/
dictionary CameraRecorderOptions
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{
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DOMString profile;
long rotation;
};
/* 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;
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long long maxFileSizeBytes;
long long maxVideoLengthMs;
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};
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[scriptable, function, uuid(0444a687-4bc9-462c-8246-5423f0fe46a4)]
interface nsICameraPreviewStreamCallback : nsISupports
{
void handleEvent(in nsIDOMMediaStream stream);
};
[scriptable, function, uuid(6baa4ac7-9c25-4c48-9bb0-5193b38b9b0a)]
interface nsICameraAutoFocusCallback : nsISupports
{
void handleEvent(in boolean success);
};
[scriptable, function, uuid(17af779e-cb6f-4ca5-890c-06468ff82e4f)]
interface nsICameraTakePictureCallback : nsISupports
{
void handleEvent(in nsIDOMBlob picture);
};
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[scriptable, function, uuid(89a762f8-581b-410a-ad86-e2bd2113ad82)]
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interface nsICameraStartRecordingCallback : nsISupports
{
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void handleEvent();
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};
[scriptable, function, uuid(fb80db71-e315-42f0-9ea9-dd3dd312ed70)]
interface nsICameraShutterCallback : nsISupports
{
void handleEvent();
};
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[scriptable, function, uuid(0ef0f01e-ce74-4741-9bba-54376adfb7a2)]
interface nsICameraClosedCallback : nsISupports
{
void handleEvent();
};
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[scriptable, function, uuid(550d675a-257d-4713-8b3d-0da53eba68fc)]
interface nsICameraRecorderStateChange : nsISupports
{
void handleStateChange(in DOMString newState);
};
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[scriptable, function, uuid(a302c6c9-3776-4d1d-a395-f4105d47c3d3)]
interface nsICameraErrorCallback : nsISupports
{
void handleEvent(in DOMString error);
};
/*
attributes here affect the preview, any pictures taken, and/or
any video recorded by the camera.
*/
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[scriptable, uuid(70f45209-b69b-4937-bbac-57d82600e2af)]
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interface nsICameraControl : nsISupports
{
readonly attribute nsICameraCapabilities capabilities;
/* one of the vales chosen from capabilities.effects;
default is "none" */
attribute DOMString effect;
/* one of the values chosen from capabilities.whiteBalanceModes;
default is "auto" */
attribute DOMString whiteBalanceMode;
/* one of the valus chosen from capabilities.sceneModes;
default is "auto" */
attribute DOMString sceneMode;
/* one of the values chosen from capabilities.flashModes;
default is "auto" */
attribute DOMString flashMode;
/* one of the values chosen from capabilities.focusModes;
default is "auto", if supported, or "fixed" */
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 */
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.
this attribute can be set to null to allow the camera to determine
where to perform light metering. */
[implicit_jscontext]
attribute jsval 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.
this attribute can be set to null to allow the camera to determine
where to focus. */
[implicit_jscontext]
attribute jsval focusAreas;
/* focal length in millimetres */
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. */
readonly attribute double focusDistanceNear;
readonly attribute double focusDistanceOptimum;
readonly attribute 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. */
[implicit_jscontext]
void setExposureCompensation([optional] in jsval compensation);
readonly attribute double exposureCompensation;
/* the function to call on the camera's shutter event, to trigger
a shutter sound and/or a visual shutter indicator. */
attribute nsICameraShutterCallback onShutter;
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/* 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 nsICameraClosedCallback onClosed;
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/* 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 nsICameraRecorderStateChange onRecorderStateChange;
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/* tell the camera to attempt to focus the image */
void autoFocus(in nsICameraAutoFocusCallback onSuccess, [optional] in nsICameraErrorCallback onError);
/* 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). */
[implicit_jscontext]
void takePicture(in jsval aOptions, in nsICameraTakePictureCallback onSuccess, [optional] in nsICameraErrorCallback onError);
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/* get a media stream to be used as a camera viewfinder in video mode;
'aOptions' is an CameraRecorderOptions object. */
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[implicit_jscontext]
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void getPreviewStreamVideoMode(in jsval aOptions, in nsICameraPreviewStreamCallback onSuccess, [optional] in nsICameraErrorCallback onError);
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/* start recording video; 'aOptions' is a
CameraStartRecordingOptions object. */
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[implicit_jscontext]
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void startRecording(in jsval aOptions, in nsIDOMDeviceStorage storageArea, in DOMString filename, in nsICameraStartRecordingCallback onSuccess, [optional] in nsICameraErrorCallback onError);
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/* stop precording video. */
void stopRecording();
/* get a media stream to be used as a camera viewfinder; the options
define the desired frame size of the preview, chosen from
capabilities.previewSizes, e.g.:
{
height: 640,
width: 480,
}
*/
[implicit_jscontext]
void getPreviewStream(in jsval aOptions, in nsICameraPreviewStreamCallback onSuccess, [optional] in nsICameraErrorCallback onError);
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/* call in or after the takePicture() onSuccess callback to
resume the camera preview stream. */
void resumePreview();
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};
[scriptable, function, uuid(a267afbc-d91c-413a-8de5-0b94aecffa3e)]
interface nsICameraGetCameraCallback : nsISupports
{
void handleEvent(in nsICameraControl camera);
};
[scriptable, uuid(671ee624-0336-441a-a24e-26b5319f14fe)]
interface nsIDOMCameraManager : nsISupports
{
/* get a camera instance; options will be used to specify which
camera to get from the list returned by getListOfCameras(), e.g.:
{
camera: front
}
*/
[implicit_jscontext]
void getCamera([optional] in jsval aOptions, in nsICameraGetCameraCallback onSuccess, [optional] in nsICameraErrorCallback onError);
/* return a JSON array of camera identifiers, e.g.
[ "front", "back" ]
*/
[implicit_jscontext]
jsval getListOfCameras();
};
