зеркало из https://github.com/mozilla/gecko-dev.git
346 строки
11 KiB
Plaintext
346 строки
11 KiB
Plaintext
#include "domstubs.idl"
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#include "nsIDOMMediaStream.idl"
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#include "nsIDOMDOMRequest.idl"
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interface nsIDOMBlob;
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/* Used to set the dimensions of a captured picture,
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a preview stream, a video capture stream, etc. */
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dictionary CameraSize {
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unsigned long width;
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unsigned long height;
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};
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/* Camera regions are used to set focus and metering areas;
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the coordinates are referenced to the sensor:
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(-1000, -1000) is the top left corner
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(1000, 1000) is the bottom left corner
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The weight of the region can range from 0 to 1000. */
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dictionary CameraRegion {
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long top;
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long left;
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long bottom;
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long right;
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unsigned long weight;
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};
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/* The position information to record in the image header.
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'NaN' indicates the information is not available. */
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dictionary CameraPosition {
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double latitude;
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double longitude;
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double altitude;
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double timestamp;
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};
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/* Select a camera to use. */
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dictionary CameraSelector {
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DOMString camera = "back";
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};
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[scriptable, uuid(64196840-0d03-4b65-a955-790f43a4b810)]
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interface nsICameraCapabilities : nsISupports
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{
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/* an array of objects with 'height' and 'width' properties
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supported for the preview stream */
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[implicit_jscontext]
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readonly attribute jsval previewSizes;
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/* an array of objects with 'height' and 'width' properties
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supported for picture taking */
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[implicit_jscontext]
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readonly attribute jsval pictureSizes;
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/* an array of strings, e.g. [ "jpeg", "rgb565" ] */
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[implicit_jscontext]
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readonly attribute jsval fileFormats;
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/* an array of strings, e.g. [ "auto", "fluorescent", etc. ] */
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[implicit_jscontext]
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readonly attribute jsval whiteBalanceModes;
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/* an array of strings, e.g. [ "auto", "night", "beach", etc. ] */
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[implicit_jscontext]
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readonly attribute jsval sceneModes;
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/* an array of strings, e.g. [ "normal", "sepia", "mono", etc. ] */
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[implicit_jscontext]
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readonly attribute jsval effects;
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/* an array of strings, e.g. [ "auto", "off", "on", etc. ] */
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[implicit_jscontext]
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readonly attribute jsval flashModes;
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/* an array of strings, e.g. [ "auto", "fixed", "macro", etc. ] */
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[implicit_jscontext]
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readonly attribute jsval focusModes;
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/* the maximum number of focus areas supported by the camera */
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[implicit_jscontext]
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readonly attribute long maxFocusAreas;
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/* the minimum supported exposure compensation value */
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[implicit_jscontext]
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readonly attribute double minExposureCompensation;
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/* the maximum supported exposure compensation value */
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[implicit_jscontext]
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readonly attribute double maxExposureCompensation;
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/* exposure compensation minimum step-size */
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[implicit_jscontext]
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readonly attribute double stepExposureCompensation;
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/* the maximum number of metering areas supported by the camera */
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[implicit_jscontext]
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readonly attribute long maxMeteringAreas;
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/* an array of doubles, e.g. [ 1.0, 1.2, 1.5, 2.0, 3.0, etc. ],
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or null if zooming is not supported */
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[implicit_jscontext]
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readonly attribute jsval zoomRatios;
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/* an array of objects with 'height' and 'width' properties
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supported for video recording */
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[implicit_jscontext]
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readonly attribute jsval videoSizes;
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};
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/*
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These properties only affect the captured image;
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invalid property settings are ignored.
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*/
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dictionary CameraPictureOptions
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{
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/* an object with a combination of 'height' and 'width' properties
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chosen from nsICameraCapabilities.pictureSizes */
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jsval pictureSize;
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/* one of the file formats chosen from
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nsICameraCapabilities.fileFormats */
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DOMString fileFormat;
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/* the rotation of the image in degrees, from 0 to 270 in
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steps of 90; this doesn't affect the image, only the
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rotation recorded in the image header.*/
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long rotation;
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/* an object containing any or all of 'latitude', 'longitude',
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'altitude', and 'timestamp', used to record when and where
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the image was taken. e.g.
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{
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latitude: 43.647118,
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longitude: -79.3943,
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altitude: 500
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// timestamp not specified, in this case, and
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// won't be included in the image header
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}
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can be null in the case where position information isn't
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available/desired.
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'altitude' is in metres; 'timestamp' is UTC, in seconds from
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January 1, 1970.
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*/
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jsval position;
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};
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[scriptable, function, uuid(0444a687-4bc9-462c-8246-5423f0fe46a4)]
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interface nsICameraPreviewStreamCallback : nsISupports
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{
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void handleEvent(in nsIDOMMediaStream stream);
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};
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[scriptable, function, uuid(6baa4ac7-9c25-4c48-9bb0-5193b38b9b0a)]
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interface nsICameraAutoFocusCallback : nsISupports
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{
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void handleEvent(in boolean success);
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};
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[scriptable, function, uuid(17af779e-cb6f-4ca5-890c-06468ff82e4f)]
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interface nsICameraTakePictureCallback : nsISupports
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{
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void handleEvent(in nsIDOMBlob picture);
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};
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[scriptable, function, uuid(ac43f123-529c-48d3-84dd-ad206b7aca9b)]
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interface nsICameraStartRecordingCallback : nsISupports
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{
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void handleEvent(in nsIDOMMediaStream stream);
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};
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[scriptable, function, uuid(fb80db71-e315-42f0-9ea9-dd3dd312ed70)]
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interface nsICameraShutterCallback : nsISupports
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{
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void handleEvent();
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};
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[scriptable, function, uuid(a302c6c9-3776-4d1d-a395-f4105d47c3d3)]
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interface nsICameraErrorCallback : nsISupports
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{
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void handleEvent(in DOMString error);
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};
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/*
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attributes here affect the preview, any pictures taken, and/or
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any video recorded by the camera.
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*/
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[scriptable, uuid(b8949e5c-55b0-49dd-99a9-68d11342915a)]
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interface nsICameraControl : nsISupports
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{
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readonly attribute nsICameraCapabilities capabilities;
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/* one of the vales chosen from capabilities.effects;
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default is "none" */
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attribute DOMString effect;
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/* one of the values chosen from capabilities.whiteBalanceModes;
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default is "auto" */
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attribute DOMString whiteBalanceMode;
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/* one of the valus chosen from capabilities.sceneModes;
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default is "auto" */
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attribute DOMString sceneMode;
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/* one of the values chosen from capabilities.flashModes;
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default is "auto" */
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attribute DOMString flashMode;
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/* one of the values chosen from capabilities.focusModes;
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default is "auto", if supported, or "fixed" */
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attribute DOMString focusMode;
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/* one of the values chosen from capabilities.zoomRatios; other
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values will be rounded to the nearest supported value;
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default is 1.0 */
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attribute double zoom;
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/* an array of one or more objects that define where the
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camera will perform light metering, each defining the properties:
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{
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top: -1000,
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left: -1000,
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bottom: 1000,
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right: 1000,
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weight: 1000
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}
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'top', 'left', 'bottom', and 'right' all range from -1000 at
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the top-/leftmost of the sensor to 1000 at the bottom-/rightmost
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of the sensor.
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objects missing one or more of these properties will be ignored;
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if the array contains more than capabilities.maxMeteringAreas,
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extra areas will be ignored.
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this attribute can be set to null to allow the camera to determine
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where to perform light metering. */
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[implicit_jscontext]
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attribute jsval meteringAreas;
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/* an array of one or more objects that define where the camera will
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perform auto-focusing, with the same definition as meteringAreas.
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if the array contains more than capabilities.maxFocusAreas, extra
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areas will be ignored.
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this attribute can be set to null to allow the camera to determine
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where to focus. */
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[implicit_jscontext]
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attribute jsval focusAreas;
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/* focal length in millimetres */
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readonly attribute double focalLength;
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/* the distances in metres to where the image subject appears to be
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in focus. 'focusDistanceOptimum' is where the subject will appear
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sharpest; the difference between 'focusDistanceFar' and
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'focusDistanceNear' is the image's depth of field.
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'focusDistanceFar' may be infinity. */
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readonly attribute double focusDistanceNear;
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readonly attribute double focusDistanceOptimum;
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readonly attribute double focusDistanceFar;
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/* 'compensation' is optional, and if missing, will
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set the camera to use automatic exposure compensation.
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acceptable values must range from minExposureCompensation
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to maxExposureCompensation in steps of stepExposureCompensation;
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invalid values will be rounded to the nearest valid value. */
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[implicit_jscontext]
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void setExposureCompensation([optional] in jsval compensation);
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readonly attribute double exposureCompensation;
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/* the function to call on the camera's shutter event, to trigger
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a shutter sound and/or a visual shutter indicator. */
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attribute nsICameraShutterCallback onShutter;
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/* tell the camera to attempt to focus the image */
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void autoFocus(in nsICameraAutoFocusCallback onSuccess, [optional] in nsICameraErrorCallback onError);
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/* capture an image and return it as a blob to the 'onSuccess' callback;
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if the camera supports it, this may be invoked while the camera is
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already recording video.
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invoking this function will stop the preview stream, which must be
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manually restarted (e.g. by calling .play() on it). */
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[implicit_jscontext]
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void takePicture(in jsval aOptions, in nsICameraTakePictureCallback onSuccess, [optional] in nsICameraErrorCallback onError);
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/* start recording video; 'aOptions' define the frame size of to
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capture, chosen from capabilities.videoSizes, e.g.:
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{
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width: 640,
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height: 480
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}
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*/
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[implicit_jscontext]
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void startRecording(in jsval aOptions, in nsICameraStartRecordingCallback onSuccess, [optional] in nsICameraErrorCallback onError);
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/* stop precording video. */
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void stopRecording();
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/* get a media stream to be used as a camera viewfinder; the options
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define the desired frame size of the preview, chosen from
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capabilities.previewSizes, e.g.:
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{
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height: 640,
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width: 480,
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}
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*/
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[implicit_jscontext]
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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
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resume the camera preview stream. */
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void resumePreview();
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};
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[scriptable, function, uuid(a267afbc-d91c-413a-8de5-0b94aecffa3e)]
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interface nsICameraGetCameraCallback : nsISupports
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{
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void handleEvent(in nsICameraControl camera);
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};
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[scriptable, uuid(671ee624-0336-441a-a24e-26b5319f14fe)]
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interface nsIDOMCameraManager : nsISupports
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{
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/* get a camera instance; options will be used to specify which
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camera to get from the list returned by getListOfCameras(), e.g.:
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{
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camera: front
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}
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*/
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[implicit_jscontext]
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void getCamera([optional] in jsval aOptions, in nsICameraGetCameraCallback onSuccess, [optional] in nsICameraErrorCallback onError);
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/* return a JSON array of camera identifiers, e.g.
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[ "front", "back" ]
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*/
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[implicit_jscontext]
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jsval getListOfCameras();
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};
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