ANTIBANDING_50HZ

String ANTIBANDING_50HZ

Constant Value: "50hz"

ANTIBANDING_60HZ

String ANTIBANDING_60HZ

Constant Value: "60hz"

ANTIBANDING_AUTO

String ANTIBANDING_AUTO

Constant Value: "auto"

ANTIBANDING_OFF

String ANTIBANDING_OFF

Constant Value: "off"

EFFECT_AQUA

String EFFECT_AQUA

Constant Value: "aqua"

EFFECT_BLACKBOARD

String EFFECT_BLACKBOARD

Constant Value: "blackboard"

EFFECT_MONO

String EFFECT_MONO

Constant Value: "mono"

EFFECT_NEGATIVE

String EFFECT_NEGATIVE

Constant Value: "negative"

EFFECT_NONE

String EFFECT_NONE

Constant Value: "none"

EFFECT_POSTERIZE

String EFFECT_POSTERIZE

Constant Value: "posterize"

EFFECT_SEPIA

String EFFECT_SEPIA

Constant Value: "sepia"

EFFECT_SOLARIZE

String EFFECT_SOLARIZE

Constant Value: "solarize"

EFFECT_WHITEBOARD

String EFFECT_WHITEBOARD

Constant Value: "whiteboard"

FLASH_MODE_AUTO

String FLASH_MODE_AUTO

Flash will be fired automatically when required. The flash may be fired during preview, auto-focus, or snapshot depending on the driver.

Constant Value: "auto"

FLASH_MODE_OFF

String FLASH_MODE_OFF

Flash will not be fired.

Constant Value: "off"

FLASH_MODE_ON

String FLASH_MODE_ON

Flash will always be fired during snapshot. The flash may also be fired during preview or auto-focus depending on the driver.

Constant Value: "on"

FLASH_MODE_RED_EYE

String FLASH_MODE_RED_EYE

Flash will be fired in red-eye reduction mode.

Constant Value: "red-eye"

FLASH_MODE_TORCH

String FLASH_MODE_TORCH

Constant emission of light during preview, auto-focus and snapshot. This can also be used for video recording.

Constant Value: "torch"

FOCUS_DISTANCE_FAR_INDEX

int FOCUS_DISTANCE_FAR_INDEX

The array index of far focus distance for use with getFocusDistances(float[]).

Constant Value: 2 (0x00000002)

FOCUS_DISTANCE_NEAR_INDEX

int FOCUS_DISTANCE_NEAR_INDEX

The array index of near focus distance for use with getFocusDistances(float[]).

Constant Value: 0 (0x00000000)

FOCUS_DISTANCE_OPTIMAL_INDEX

int FOCUS_DISTANCE_OPTIMAL_INDEX

The array index of optimal focus distance for use with getFocusDistances(float[]).

Constant Value: 1 (0x00000001)

FOCUS_MODE_AUTO

String FOCUS_MODE_AUTO

Auto-focus mode. Applications should call autoFocus(AutoFocusCallback) to start the focus in this mode.

Constant Value: "auto"

FOCUS_MODE_CONTINUOUS_PICTURE

String FOCUS_MODE_CONTINUOUS_PICTURE

Continuous auto focus mode intended for taking pictures. The camera continuously tries to focus. The speed of focus change is more aggressive thanFOCUS_MODE_CONTINUOUS_VIDEO. Auto focus starts when the parameter is set.

Applications can call autoFocus(AutoFocusCallback) in this mode. If the autofocus is in the middle of scanning, the focus callback will return when it completes. If the autofocus is not scanning, the focus callback will immediately return with a boolean that indicates whether the focus is sharp or not. The apps can then decide if they want to take a picture immediately or to change the focus mode to auto, and run a full autofocus cycle. The focus position is locked after autoFocus call. If applications want to resume the continuous focus, cancelAutoFocus must be called. Restarting the preview will not resume the continuous autofocus. To stop continuous focus, applications should change the focus mode to other modes.

Constant Value: "continuous-picture"

FOCUS_MODE_CONTINUOUS_VIDEO

String FOCUS_MODE_CONTINUOUS_VIDEO

Continuous auto focus mode intended for video recording. The camera continuously tries to focus. This is the best choice for video recording because the focus changes smoothly . Applications still can call takePicture(Camera.ShutterCallback, Camera.PictureCallback, Camera.PictureCallback) in this mode but the subject may not be in focus. Auto focus starts when the parameter is set.

Since API level 14, applications can call autoFocus(AutoFocusCallback) in this mode. The focus callback will immediately return with a boolean that indicates whether the focus is sharp or not. The focus position is locked after autoFocus call. If applications want to resume the continuous focus, cancelAutoFocus must be called. Restarting the preview will not resume the continuous autofocus. To stop continuous focus, applications should change the focus mode to other modes.

Constant Value: "continuous-video"

FOCUS_MODE_EDOF

String FOCUS_MODE_EDOF

Extended depth of field (EDOF). Focusing is done digitally and continuously. Applications should not call autoFocus(AutoFocusCallback) in this mode.

Constant Value: "edof"

FOCUS_MODE_FIXED

String FOCUS_MODE_FIXED

Focus is fixed. The camera is always in this mode if the focus is not adjustable. If the camera has auto-focus, this mode can fix the focus, which is usually at hyperfocal distance. Applications should not call autoFocus(AutoFocusCallback) in this mode.

Constant Value: "fixed"

FOCUS_MODE_INFINITY

String FOCUS_MODE_INFINITY

Focus is set at infinity. Applications should not call autoFocus(AutoFocusCallback) in this mode.

Constant Value: "infinity"

FOCUS_MODE_MACRO

String FOCUS_MODE_MACRO

Macro (close-up) focus mode. Applications should call autoFocus(AutoFocusCallback) to start the focus in this mode.

Constant Value: "macro"

PREVIEW_FPS_MAX_INDEX

int PREVIEW_FPS_MAX_INDEX

The array index of maximum preview fps for use with getPreviewFpsRange(int[]) or getSupportedPreviewFpsRange().

Constant Value: 1 (0x00000001)

PREVIEW_FPS_MIN_INDEX

int PREVIEW_FPS_MIN_INDEX

The array index of minimum preview fps for use with getPreviewFpsRange(int[]) or getSupportedPreviewFpsRange().

Constant Value: 0 (0x00000000)

SCENE_MODE_ACTION

String SCENE_MODE_ACTION

Take photos of fast moving objects. Same as SCENE_MODE_SPORTS.

Constant Value: "action"

SCENE_MODE_AUTO

String SCENE_MODE_AUTO

Scene mode is off.

Constant Value: "auto"

SCENE_MODE_BARCODE

String SCENE_MODE_BARCODE

Applications are looking for a barcode. Camera driver will be optimized for barcode reading.

Constant Value: "barcode"

SCENE_MODE_BEACH

String SCENE_MODE_BEACH

Take pictures on the beach.

Constant Value: "beach"

SCENE_MODE_CANDLELIGHT

String SCENE_MODE_CANDLELIGHT

Capture the naturally warm color of scenes lit by candles.

Constant Value: "candlelight"

SCENE_MODE_FIREWORKS

String SCENE_MODE_FIREWORKS

For shooting firework displays.

Constant Value: "fireworks"

SCENE_MODE_HDR

String SCENE_MODE_HDR

Capture a scene using high dynamic range imaging techniques. The camera will return an image that has an extended dynamic range compared to a regular capture. Capturing such an image may take longer than a regular capture.

Constant Value: "hdr"

SCENE_MODE_LANDSCAPE

String SCENE_MODE_LANDSCAPE

Take pictures on distant objects.

Constant Value: "landscape"

SCENE_MODE_NIGHT

String SCENE_MODE_NIGHT

Take photos at night.

Constant Value: "night"

SCENE_MODE_NIGHT_PORTRAIT

String SCENE_MODE_NIGHT_PORTRAIT

Take people pictures at night.

Constant Value: "night-portrait"

SCENE_MODE_PARTY

String SCENE_MODE_PARTY

Take indoor low-light shot.

Constant Value: "party"

SCENE_MODE_PORTRAIT

String SCENE_MODE_PORTRAIT

Take people pictures.

Constant Value: "portrait"

SCENE_MODE_SNOW

String SCENE_MODE_SNOW

Take pictures on the snow.

Constant Value: "snow"

SCENE_MODE_SPORTS

String SCENE_MODE_SPORTS

Take photos of fast moving objects. Same as SCENE_MODE_ACTION.

Constant Value: "sports"

SCENE_MODE_STEADYPHOTO

String SCENE_MODE_STEADYPHOTO

Avoid blurry pictures (for example, due to hand shake).

Constant Value: "steadyphoto"

SCENE_MODE_SUNSET

String SCENE_MODE_SUNSET

Take sunset photos.

Constant Value: "sunset"

SCENE_MODE_THEATRE

String SCENE_MODE_THEATRE

Take photos in a theater. Flash light is off.

Constant Value: "theatre"

WHITE_BALANCE_AUTO

String WHITE_BALANCE_AUTO

Constant Value: "auto"

WHITE_BALANCE_CLOUDY_DAYLIGHT

String WHITE_BALANCE_CLOUDY_DAYLIGHT

Constant Value: "cloudy-daylight"

WHITE_BALANCE_DAYLIGHT

String WHITE_BALANCE_DAYLIGHT

Constant Value: "daylight"

WHITE_BALANCE_FLUORESCENT

String WHITE_BALANCE_FLUORESCENT

Constant Value: "fluorescent"

WHITE_BALANCE_INCANDESCENT

String WHITE_BALANCE_INCANDESCENT

Constant Value: "incandescent"

WHITE_BALANCE_SHADE

String WHITE_BALANCE_SHADE

Constant Value: "shade"

WHITE_BALANCE_TWILIGHT

String WHITE_BALANCE_TWILIGHT

Constant Value: "twilight"

WHITE_BALANCE_WARM_FLUORESCENT

String WHITE_BALANCE_WARM_FLUORESCENT

Constant Value: "warm-fluorescent"

flatten

String flatten ()

Creates a single string with all the parameters set in this Parameters object.

创建一个字符串中所有的参数设置的参数对象。

The unflatten(String) method does the reverse.

get

String get (String key)

Returns the value of a String parameter.

getAntibanding

String getAntibanding ()

Gets the current antibanding setting.获取当前antibanding设置。

getAutoExposureLock

boolean getAutoExposureLock ()

Gets the state of the auto-exposure lock. Applications should check isAutoExposureLockSupported() before using this method. SeesetAutoExposureLock(boolean) for details about the lock.在自动曝光锁定的状态。应用程序应该检查isAutoExposureLockSupported()之前使用这种方法。看到setAutoExposureLock(boolean)锁的详细信息。

getAutoWhiteBalanceLock

boolean getAutoWhiteBalanceLock ()

Gets the state of the auto-white balance lock. Applications should check isAutoWhiteBalanceLockSupported() before using this method. SeesetAutoWhiteBalanceLock(boolean) for details about the lock.锁会自动白平衡的状态。应用程序应该检查isAutoWhiteBalanceLockSupported()之前使用这种方法。看到setAutoWhiteBalanceLock(boolean)锁的详细信息。

getColorEffect

String getColorEffect ()

Gets the current color effect setting.获取当前颜色设置的影响。

getExposureCompensation

int getExposureCompensation ()

Gets the current exposure compensation index.获取当前曝光补偿指数。

getExposureCompensationStep

float getExposureCompensationStep ()

Gets the exposure compensation step.得到了曝光补偿步骤。

getFlashMode

String getFlashMode ()

Gets the current flash mode setting.获取当前闪光模式设置。

getFocalLength

float getFocalLength ()

Gets the focal length (in millimeter) of the camera.得到相机的焦距(毫米)。

getFocusAreas

List<Camera.Area> getFocusAreas ()

Gets the current focus areas. Camera driver uses the areas to decide focus.得到当前的焦点地区。摄像头驱动程序使用决定关注的领域。

Before using this API or setFocusAreas(List), apps should call getMaxNumFocusAreas() to know the maximum number of focus areas first. If the value is 0, focus area is not supported.之前使用这个API或setFocusAreas(列表),应用程序应该叫getMaxNumFocusAreas()先知道重点领域的最大数量。如果该值为0,不支持重点区域。

Each focus area is a rectangle with specified weight. The direction is relative to the sensor orientation, that is, what the sensor sees. The direction is not affected by the rotation or mirroring of setDisplayOrientation(int). Coordinates of the rectangle range from -1000 to 1000. (-1000, -1000) is the upper left point. (1000, 1000) is the lower right point. The width and height of focus areas cannot be 0 or negative.每个重点区域是一个矩形,指定的重量。方向是相对于传感器定位,也就是说,传感器所看到的。方向是不受旋转或镜像setDisplayOrientation(int)。矩形的坐标范围从-1000到1000。(-1000,-1000)是左上角点。(1000,1000)是右下角点。重点区域的宽度和高度不能是0或负面的。

The weight must range from 1 to 1000. The weight should be interpreted as a per-pixel weight - all pixels in the area have the specified weight. This means a small area with the same weight as a larger area will have less influence on the focusing than the larger area. Focus areas can partially overlap and the driver will add the weights in the overlap region.重量必须在1到1000之间。重量应该解读为单像素的重量,该地区所有像素指定的重量。这意味着小面积相同的体重较大的面积会减少影响比面积较大的关注。重点领域可以部分重叠,传感器将重叠区域的权重。

A special case of a null focus area list means the driver is free to select focus targets as it wants. For example, the driver may use more signals to select focus areas and change them dynamically. Apps can set the focus area list to null if they want the driver to completely control focusing.零聚焦区域的一种特殊情况列表意味着传感器和它想要自由选择重点目标。例如,传感器可能使用更多的信号选择重点领域,并动态地更改它们。应用程序可以设置重点区域列表为空,如果他们想让传感器完全集中控制。

Focus areas are relative to the current field of view (getZoom()). No matter what the zoom level is, (-1000,-1000) represents the top of the currently visible camera frame. The focus area cannot be set to be outside the current field of view, even when using zoom.重点领域是相对于当前的视野(getZoom())。无论缩放级别是什么,(-1000、-1000)代表目前可见的相机顶部的框架。重点区域不能被设置为当前的视野之外,即使使用变焦。

关注领域只有效果如果FOCUS_MODE_AUTO当前的焦点模式,FOCUS_MODE_MACRO,FOCUS_MODE_CONTINUOUS_VIDEO orFOCUS_MODE_CONTINUOUS_PICTURE。

getFocusDistances

void getFocusDistances (float[] output)

Gets the distances from the camera to where an object appears to be in focus. The object is sharpest at the optimal focus distance. The depth of field is the far focus distance minus near focus distance.获取物体距离相机,似乎是焦点。最佳的对象是最焦点的距离。景深是焦点距离-焦点附近距离。

Focus distances may change after calling autoFocus(AutoFocusCallback), cancelAutoFocus(), or startPreview(). Applications can callgetParameters() and this method anytime to get the latest focus distances. If the focus mode is FOCUS_MODE_CONTINUOUS_VIDEO, focus distances may change from time to time.焦点的距离可能会改变调用自动对焦(AutoFocusCallback)后,cancelAutoFocus(),或startPreview()。应用程序可以callgetParameters()和该方法随时获取最新的焦点的距离。如果FOCUS_MODE_CONTINUOUS_VIDEO重点模式,焦点的距离可能会改变的时候。

This method is intended to estimate the distance between the camera and the subject. After autofocus, the subject distance may be within near and far focus distance. However, the precision depends on the camera hardware, autofocus algorithm, the focus area, and the scene. The error can be large and it should be only used as a reference.这种方法旨在估计相机之间的距离和主题。自动对焦后,主题可能在远近距离焦点的距离。然而,精度取决于相机硬件、自动对焦算法,重点区域和现场。错误可以大,它应该只作为参考使用。

Far focus distance >= optimal focus distance >= near focus distance. If the focus distance is infinity, the value will be Float.POSITIVE_INFINITY.远焦点附近距离> =最佳焦点距离> =焦点的距离。如果焦点距离是无穷,将Float.POSITIVE_INFINITY价值。

getFocusMode

String getFocusMode ()

Gets the current focus mode setting.得到当前的焦点模式设置。

getHorizontalViewAngle

float getHorizontalViewAngle ()

Gets the horizontal angle of view in degrees.获取角度的水平视角。

getInt

int getInt (String key)

Returns the value of an integer parameter.

getJpegQuality

int getJpegQuality ()

Returns the quality setting for the JPEG picture.获取JPEG图片的照片质量

getJpegThumbnailQuality

int getJpegThumbnailQuality ()

Returns the quality setting for the EXIF thumbnail in Jpeg picture.返回EXIF Jpeg图像的缩略图质量。

getJpegThumbnailSize

Camera.Size getJpegThumbnailSize ()

Returns the dimensions for EXIF thumbnail in Jpeg picture.返回EXIF缩略图的尺寸在Jpeg图像。

getMaxExposureCompensation

int getMaxExposureCompensation ()

Gets the maximum exposure compensation index.得到了最大的曝光补偿指数。

getMaxNumDetectedFaces

int getMaxNumDetectedFaces ()

Gets the maximum number of detected faces supported. This is the maximum length of the list returned from Camera.FaceDetectionListener. If the return value is 0, face detection of the specified type is not supported.

会发现面临的最大数量的支持。这是列表的最大长度从Camera.FaceDetectionListener回来。如果返回值是0,不支持指定类型的人脸检测。

getMaxNumFocusAreas

int getMaxNumFocusAreas ()

Gets the maximum number of focus areas supported. This is the maximum length of the list in setFocusAreas(List) and getFocusAreas().

重点领域支持的最大数量。这是setFocusAreas列表的最大长度(列表)和getFocusAreas()

getMaxNumMeteringAreas

int getMaxNumMeteringAreas ()

Gets the maximum number of metering areas supported. This is the maximum length of the list in setMeteringAreas(List) and getMeteringAreas().

getMaxZoom

int getMaxZoom ()

Gets the maximum zoom value allowed for snapshot. This is the maximum value that applications can set to setZoom(int). Applications should callisZoomSupported() before using this method. This value may change in different preview size. Applications should call this again after setting preview size.得到了最大缩放值允许快照。这是应用程序可以设置为最大值setZoom(int)。应用程序应该callisZoomSupported()之前使用这种方法。在不同的预览大小这个值可能会改变。应用程序应该调用这个预览大小后再设置。

getMeteringAreas

List<Camera.Area> getMeteringAreas ()

Gets the current metering areas. Camera driver uses these areas to decide exposure.

Before using this API or setMeteringAreas(List), apps should call getMaxNumMeteringAreas() to know the maximum number of metering areas first. If the value is 0, metering area is not supported.

Each metering area is a rectangle with specified weight. The direction is relative to the sensor orientation, that is, what the sensor sees. The direction is not affected by the rotation or mirroring of setDisplayOrientation(int). Coordinates of the rectangle range from -1000 to 1000. (-1000, -1000) is the upper left point. (1000, 1000) is the lower right point. The width and height of metering areas cannot be 0 or negative.

The weight must range from 1 to 1000, and represents a weight for every pixel in the area. This means that a large metering area with the same weight as a smaller area will have more effect in the metering result. Metering areas can partially overlap and the driver will add the weights in the overlap region.

A special case of a null metering area list means the driver is free to meter as it chooses. For example, the driver may use more signals to select metering areas and change them dynamically. Apps can set the metering area list to null if they want the driver to completely control metering.

Metering areas are relative to the current field of view (getZoom()). No matter what the zoom level is, (-1000,-1000) represents the top of the currently visible camera frame. The metering area cannot be set to be outside the current field of view, even when using zoom.

No matter what metering areas are, the final exposure are compensated by setExposureCompensation(int).

getMinExposureCompensation

int getMinExposureCompensation ()

Gets the minimum exposure compensation index.

getPictureFormat

int getPictureFormat ()

Returns the image format for pictures. 返回图像格式的图片。

getPictureSize

Camera.Size getPictureSize ()

Returns the dimension setting for pictures.返回图片设置尺寸。

getPreferredPreviewSizeForVideo

Camera.Size getPreferredPreviewSizeForVideo ()

Returns the preferred or recommended preview size (width and height) in pixels for video recording. Camcorder applications should set the preview size to a value that is not larger than the preferred preview size. In other words, the product of the width and height of the preview size should not be larger than that of the preferred preview size. In addition, we recommend to choose a preview size that has the same aspect ratio as the resolution of video to be recorded.返回的首选或推荐预览大小(宽度和高度)像素的录像。摄像机应用程序应该设置预览大小的值不大于首选预览大小。换句话说,产品的宽度和高度预览大小不应超过的首选预览大小。此外,我们建议选择一个预览大小相同的长宽比分辨率的视频记录。

getPreviewFormat

int getPreviewFormat ()

Returns the image format for preview frames got from Camera.PreviewCallback.返回从Camera.PreviewCallback预览帧的图像格式。

getPreviewFpsRange

void getPreviewFpsRange (int[] range)

Returns the current minimum and maximum preview fps. The values are one of the elements returned by getSupportedPreviewFpsRange().

返回当前的最小和最大预览fps。返回的值是一个元素getSupportedPreviewFpsRange()。

getPreviewFrameRate

int getPreviewFrameRate ()

This method was deprecated in API level 9.
replaced by getPreviewFpsRange(int[])

Returns the setting for the rate at which preview frames are received. This is the target frame rate. The actual frame rate depends on the driver.返回设置预览帧的速率。这是目标帧率。实际的帧速率取决于传感器。

getPreviewSize

Camera.Size getPreviewSize ()

Returns the dimensions setting for preview pictures.

getSceneMode

String getSceneMode ()

Gets the current scene mode setting.获取当前情景模式设置。

getSupportedAntibanding

List<String> getSupportedAntibanding ()

Gets the supported antibanding values.

getSupportedColorEffects

List<String> getSupportedColorEffects ()

Gets the supported color effects.

getSupportedFlashModes

List<String> getSupportedFlashModes ()

Gets the supported flash modes.

getSupportedFocusModes

List<String> getSupportedFocusModes ()

Gets the supported focus modes.

getSupportedJpegThumbnailSizes

List<Camera.Size> getSupportedJpegThumbnailSizes ()

Gets the supported jpeg thumbnail sizes.

getSupportedPictureFormats

List<Integer> getSupportedPictureFormats ()

Gets the supported picture formats.

getSupportedPictureSizes

List<Camera.Size> getSupportedPictureSizes ()

Gets the supported picture sizes.

getSupportedPreviewFormats

List<Integer> getSupportedPreviewFormats ()

Gets the supported preview formats. NV21 is always supported. YV12 is always supported since API level 12.

getSupportedPreviewFpsRange

List<int[]> getSupportedPreviewFpsRange ()

Gets the supported preview fps (frame-per-second) ranges. Each range contains a minimum fps and maximum fps. If minimum fps equals to maximum fps, the camera outputs frames in fixed frame rate. If not, the camera outputs frames in auto frame rate. The actual frame rate fluctuates between the minimum and the maximum. The values are multiplied by 1000 and represented in integers. For example, if frame rate is 26.623 frames per second, the value is 26623.得到了支持预览fps(frame-per-second)范围。每个范围包含一个最低fps和最大fps。如果最小fps等于最大fps,摄像机固定帧速率输出帧。如果没有,相机输出帧汽车帧速率。实际的帧率最小值和最大值之间的波动。价值乘以1000,用整数表示。例如,如果帧速率是每秒26.623帧,值为26623。

getSupportedPreviewFrameRates

List<Integer> getSupportedPreviewFrameRates ()

This method was deprecated in API level 9.
replaced by getSupportedPreviewFpsRange()

Gets the supported preview frame rates.

getSupportedPreviewSizes

List<Camera.Size> getSupportedPreviewSizes ()

Gets the supported preview sizes.

getSupportedSceneModes

List<String> getSupportedSceneModes ()

Gets the supported scene modes.

getSupportedVideoSizes

List<Camera.Size> getSupportedVideoSizes ()

Gets the supported video frame sizes that can be used by MediaRecorder.

If the returned list is not null, the returned list will contain at least one Size and one of the sizes in the returned list must be passed to MediaRecorder.setVideoSize() for camcorder application if camera is used as the video source. In this case, the size of the preview can be different from the resolution of the recorded video during video recording.

getSupportedWhiteBalance

List<String> getSupportedWhiteBalance ()

Gets the supported white balance.

getVerticalViewAngle

float getVerticalViewAngle ()

Gets the vertical angle of view in degrees.

getVideoStabilization

boolean getVideoStabilization ()

Get the current state of video stabilization. See setVideoStabilization(boolean) for details of video stabilization.

getWhiteBalance

String getWhiteBalance ()

Gets the current white balance setting.

getZoom

int getZoom ()

Gets current zoom value. This also works when smooth zoom is in progress. Applications should check isZoomSupported() before using this method.

getZoomRatios

List<Integer> getZoomRatios ()

Gets the zoom ratios of all zoom values. Applications should check isZoomSupported() before using this method.

isAutoExposureLockSupported

boolean isAutoExposureLockSupported ()

Returns true if auto-exposure locking is supported. Applications should call this before trying to lock auto-exposure. See setAutoExposureLock(boolean)for details about the lock.

isAutoWhiteBalanceLockSupported

boolean isAutoWhiteBalanceLockSupported ()

Returns true if auto-white balance locking is supported. Applications should call this before trying to lock auto-white balance. SeesetAutoWhiteBalanceLock(boolean) for details about the lock.

isSmoothZoomSupported

boolean isSmoothZoomSupported ()

Returns true if smooth zoom is supported. Applications should call this before using other smooth zoom methods.如果平滑缩放支持返回true。应用程序应该调用这个之前使用其他平滑缩放方法。

isVideoSnapshotSupported

boolean isVideoSnapshotSupported ()

Returns true if video snapshot is supported. That is, applications can call takePicture(Camera.ShutterCallback, Camera.PictureCallback, Camera.PictureCallback, Camera.PictureCallback) during recording. Applications do not need to call startPreview() after taking a picture. The preview will be still active. Other than that, taking a picture during recording is identical to taking a picture normally. All settings and methods related to takePicture work identically. Ex: getPictureSize(), getSupportedPictureSizes(), setJpegQuality(int), setRotation(int), and etc. The picture will have an EXIF header. FLASH_MODE_AUTO and FLASH_MODE_ON also still work, but the video will record the flash.

Applications can set shutter callback as null to avoid the shutter sound. It is also recommended to set raw picture and post view callbacks to null to avoid the interrupt of preview display.

Field-of-view of the recorded video may be different from that of the captured pictures. The maximum size of a video snapshot may be smaller than that for regular still captures. If the current picture size is set higher than can be supported by video snapshot, the picture will be captured at the maximum supported size instead.

isVideoStabilizationSupported

boolean isVideoStabilizationSupported ()

Returns true if video stabilization is supported. See setVideoStabilization(boolean) for details of video stabilization.

isZoomSupported

boolean isZoomSupported ()

Returns true if zoom is supported. Applications should call this before using other zoom methods.

remove

void remove (String key)

removeGpsData

void removeGpsData ()

Removes GPS latitude, longitude, altitude, and timestamp from the parameters.删除GPS经度,纬度、海拔高度和时间戳的参数。

set

void set (String key, 
                String value)

Sets a String parameter.

set

void set (String key, 
                int value)

Sets an integer parameter.

setAntibanding

void setAntibanding (String antibanding)

Sets the antibanding.

setAutoExposureLock

void setAutoExposureLock (boolean toggle)

Sets the auto-exposure lock state. Applications should check isAutoExposureLockSupported() before using this method.

If set to true, the camera auto-exposure routine will immediately pause until the lock is set to false. Exposure compensation settings changes will still take effect while auto-exposure is locked.

If auto-exposure is already locked, setting this to true again has no effect (the driver will not recalculate exposure values).

Stopping preview with stopPreview(), or triggering still image capture with takePicture(Camera.ShutterCallback, Camera.PictureCallback, Camera.PictureCallback), will not change the lock.

Exposure compensation, auto-exposure lock, and auto-white balance lock can be used to capture an exposure-bracketed burst of images, for example.

Auto-exposure state, including the lock state, will not be maintained after camera release() is called. Locking auto-exposure after open() but before the first call to startPreview() will not allow the auto-exposure routine to run at all, and may result in severely over- or under-exposed images.

setAutoWhiteBalanceLock

void setAutoWhiteBalanceLock (boolean toggle)

Sets the auto-white balance lock state. Applications should check isAutoWhiteBalanceLockSupported() before using this method.

If set to true, the camera auto-white balance routine will immediately pause until the lock is set to false.

If auto-white balance is already locked, setting this to true again has no effect (the driver will not recalculate white balance values).

Stopping preview with stopPreview(), or triggering still image capture with takePicture(Camera.ShutterCallback, Camera.PictureCallback, Camera.PictureCallback), will not change the the lock.

Changing the white balance mode with setWhiteBalance(String) will release the auto-white balance lock if it is set.

Exposure compensation, AE lock, and AWB lock can be used to capture an exposure-bracketed burst of images, for example. Auto-white balance state, including the lock state, will not be maintained after camera release() is called. Locking auto-white balance after open() but before the first call tostartPreview() will not allow the auto-white balance routine to run at all, and may result in severely incorrect color in captured images.

setColorEffect

void setColorEffect (String value)

Sets the current color effect setting.

setExposureCompensation

void setExposureCompensation (int value)

Sets the exposure compensation index.

setFlashMode

void setFlashMode (String value)

Sets the flash mode.

setFocusAreas

void setFocusAreas (List<Camera.Area> focusAreas)

Sets focus areas. See getFocusAreas() for documentation.

setFocusMode

void setFocusMode (String value)

Sets the focus mode.

setGpsAltitude

void setGpsAltitude (double altitude)

Sets GPS altitude. This will be stored in JPEG EXIF header.

setGpsLatitude

void setGpsLatitude (double latitude)

Sets GPS latitude coordinate. This will be stored in JPEG EXIF header.

setGpsLongitude

void setGpsLongitude (double longitude)

Sets GPS longitude coordinate. This will be stored in JPEG EXIF header.

setGpsProcessingMethod

void setGpsProcessingMethod (String processing_method)

Sets GPS processing method. The method will be stored in a UTF-8 string up to 31 bytes long, in the JPEG EXIF header.

setGpsTimestamp

void setGpsTimestamp (long timestamp)

Sets GPS timestamp. This will be stored in JPEG EXIF header.

setJpegQuality

void setJpegQuality (int quality)

Sets Jpeg quality of captured picture.

setJpegThumbnailQuality

void setJpegThumbnailQuality (int quality)

Sets the quality of the EXIF thumbnail in Jpeg picture.

setJpegThumbnailSize

void setJpegThumbnailSize (int width, 
                int height)

Sets the dimensions for EXIF thumbnail in Jpeg picture. If applications set both width and height to 0, EXIF will not contain thumbnail.

Applications need to consider the display orientation. See setPreviewSize(int, int) for reference.

setMeteringAreas

void setMeteringAreas (List<Camera.Area> meteringAreas)

Sets metering areas. See getMeteringAreas() for documentation.

setPictureFormat

void setPictureFormat (int pixel_format)

Sets the image format for pictures.

setPictureSize

void setPictureSize (int width, 
                int height)

Sets the dimensions for pictures.

Applications need to consider the display orientation. See setPreviewSize(int, int) for reference.

setPreviewFormat

void setPreviewFormat (int pixel_format)

Sets the image format for preview pictures.

If this is never called, the default format will be NV21, which uses the NV21 encoding format.

Use getSupportedPreviewFormats() to get a list of the available preview formats.

It is strongly recommended that either NV21 or YV12 is used, since they are supported by all camera devices.

For YV12, the image buffer that is received is not necessarily tightly packed, as there may be padding at the end of each row of pixel data, as described inYV12. For camera callback data, it can be assumed that the stride of the Y and UV data is the smallest possible that meets the alignment requirements. That is, if the preview size is width x height, then the following equations describe the buffer index for the beginning of row y for the Y plane and row c for the U and V planes:

yStride   = (int) ceil(width / 16.0) * 16;
 uvStride  = (int) ceil( (yStride / 2) / 16.0) * 16;
 ySize     = yStride * height;
 uvSize    = uvStride * height / 2;
 yRowIndex = yStride * y;
 uRowIndex = ySize + uvSize + uvStride * c;
 vRowIndex = ySize + uvStride * c;
 size      = ySize + uvSize * 2;
 

setPreviewFpsRange

void setPreviewFpsRange (int min, 
                int max)

Sets the minimum and maximum preview fps. This controls the rate of preview frames received in Camera.PreviewCallback. The minimum and maximum preview fps must be one of the elements from getSupportedPreviewFpsRange().

setPreviewFrameRate

void setPreviewFrameRate (int fps)

This method was deprecated in API level 9.
replaced by setPreviewFpsRange(int, int)

Sets the rate at which preview frames are received. This is the target frame rate. The actual frame rate depends on the driver.

setPreviewSize

void setPreviewSize (int width, 
                int height)

Sets the dimensions for preview pictures. If the preview has already started, applications should stop the preview first before changing preview size. The sides of width and height are based on camera orientation. That is, the preview size is the size before it is rotated by display orientation. So applications need to consider the display orientation while setting preview size. For example, suppose the camera supports both 480x320 and 320x480 preview sizes. The application wants a 3:2 preview ratio. If the display orientation is set to 0 or 180, preview size should be set to 480x320. If the display orientation is set to 90 or 270, preview size should be set to 320x480. The display orientation should also be considered while setting picture size and thumbnail size.

setRecordingHint

void setRecordingHint (boolean hint)

Sets recording mode hint. This tells the camera that the intent of the application is to record videos start(), not to take still picturestakePicture(Camera.ShutterCallback, Camera.PictureCallback, Camera.PictureCallback, Camera.PictureCallback). Using this hint can allow MediaRecorder.start() to start faster or with fewer glitches on output. This should be called before starting preview for the best result, but can be changed while the preview is active. The default value is false. The app can still call takePicture() when the hint is true or call MediaRecorder.start() when the hint is false. But the performance may be worse.

setRotation

void setRotation (int rotation)

Sets the clockwise rotation angle in degrees relative to the orientation of the camera. This affects the pictures returned from JPEGCamera.PictureCallback. The camera driver may set orientation in the EXIF header without rotating the picture. Or the driver may rotate the picture and the EXIF thumbnail. If the Jpeg picture is rotated, the orientation in the EXIF header will be missing or 1 (row #0 is top and column #0 is left side).

If applications want to rotate the picture to match the orientation of what users see, apps should use OrientationEventListener andCamera.CameraInfo. The value from OrientationEventListener is relative to the natural orientation of the device. CameraInfo.orientation is the angle between camera orientation and natural device orientation. The sum of the two is the rotation angle for back-facing camera. The difference of the two is the rotation angle for front-facing camera. Note that the JPEG pictures of front-facing cameras are not mirrored as in preview display.

For example, suppose the natural orientation of the device is portrait. The device is rotated 270 degrees clockwise, so the device orientation is 270. Suppose a back-facing camera sensor is mounted in landscape and the top side of the camera sensor is aligned with the right edge of the display in natural orientation. So the camera orientation is 90. The rotation should be set to 0 (270 + 90).

The reference code is as follows.

 public void onOrientationChanged(int orientation) {
     if (orientation == ORIENTATION_UNKNOWN) return;
     android.hardware.Camera.CameraInfo info =
            new android.hardware.Camera.CameraInfo();
     android.hardware.Camera.getCameraInfo(cameraId, info);
     orientation = (orientation + 45) / 90 * 90;
     int rotation = 0;
     if (info.facing == CameraInfo.CAMERA_FACING_FRONT) {
         rotation = (info.orientation - orientation + 360) % 360;
     } else {  // back-facing camera
         rotation = (info.orientation + orientation) % 360;
     }
     mParameters.setRotation(rotation);
 }
 

setSceneMode

void setSceneMode (String value)

Sets the scene mode. Changing scene mode may override other parameters (such as flash mode, focus mode, white balance). For example, suppose originally flash mode is on and supported flash modes are on/off. In night scene mode, both flash mode and supported flash mode may be changed to off. After setting scene mode, applications should call getParameters to know if some parameters are changed.

setVideoStabilization

void setVideoStabilization (boolean toggle)

Enables and disables video stabilization. Use isVideoStabilizationSupported() to determine if calling this method is valid.

Video stabilization reduces the shaking due to the motion of the camera in both the preview stream and in recorded videos, including data received from the preview callback. It does not reduce motion blur in images captured with takePicture.

Video stabilization can be enabled and disabled while preview or recording is active, but toggling it may cause a jump in the video stream that may be undesirable in a recorded video.

setWhiteBalance

void setWhiteBalance (String value)

Sets the white balance. Changing the setting will release the auto-white balance lock. It is recommended not to change white balance and AWB lock at the same time.

setZoom

void setZoom (int value)

Sets current zoom value. If the camera is zoomed (value > 0), the actual picture size may be smaller than picture size setting. Applications can check the actual picture size after picture is returned from Camera.PictureCallback. The preview size remains the same in zoom. Applications should checkisZoomSupported() before using this method.

unflatten

void unflatten (String flattened)

Takes a flattened string of parameters and adds each one to this Parameters object.

The flatten() method does the reverse.