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ImageFormat

public class ImageFormat
extends Object

java.lang.Object
   ↳ android.graphics.ImageFormat


Summary

Constants

int DEPTH16

Android dense depth image format.

int DEPTH_POINT_CLOUD

Android sparse depth point cloud format.

int FLEX_RGBA_8888

Multi-plane Android RGBA format

This format is a generic RGBA format, capable of describing most RGBA formats, with 8 bits per color sample.

int FLEX_RGB_888

Multi-plane Android RGB format

This format is a generic RGB format, capable of describing most RGB formats, with 8 bits per color sample.

int JPEG

Compressed JPEG format.

int NV16

YCbCr format, used for video.

int NV21

YCrCb format used for images, which uses the NV21 encoding format.

int PRIVATE

Android private opaque image format.

int RAW10

Android 10-bit raw format

This is a single-plane, 10-bit per pixel, densely packed (in each row), unprocessed format, usually representing raw Bayer-pattern images coming from an image sensor.

int RAW12

Android 12-bit raw format

This is a single-plane, 12-bit per pixel, densely packed (in each row), unprocessed format, usually representing raw Bayer-pattern images coming from an image sensor.

int RAW_PRIVATE

Private raw camera sensor image format, a single channel image with implementation depedent pixel layout.

int RAW_SENSOR

General raw camera sensor image format, usually representing a single-channel Bayer-mosaic image.

int RGB_565

RGB format used for pictures encoded as RGB_565.

int UNKNOWN

int YUV_420_888

Multi-plane Android YUV 420 format

This format is a generic YCbCr format, capable of describing any 4:2:0 chroma-subsampled planar or semiplanar buffer (but not fully interleaved), with 8 bits per color sample.

int YUV_422_888

Multi-plane Android YUV 422 format

This format is a generic YCbCr format, capable of describing any 4:2:2 chroma-subsampled (planar, semiplanar or interleaved) format, with 8 bits per color sample.

int YUV_444_888

Multi-plane Android YUV 444 format

This format is a generic YCbCr format, capable of describing any 4:4:4 (planar, semiplanar or interleaved) format, with 8 bits per color sample.

int YUY2

YCbCr format used for images, which uses YUYV (YUY2) encoding format.

int YV12

Android YUV format.

Public constructors

ImageFormat()

Public methods

static int getBitsPerPixel(int format)

Use this function to retrieve the number of bits per pixel of an ImageFormat.

Inherited methods

From class java.lang.Object

Constants

DEPTH16

Added in API level 23
int DEPTH16

Android dense depth image format.

Each pixel is 16 bits, representing a depth ranging measurement from a depth camera or similar sensor. The 16-bit sample consists of a confidence value and the actual ranging measurement.

The confidence value is an estimate of correctness for this sample. It is encoded in the 3 most significant bits of the sample, with a value of 0 representing 100% confidence, a value of 1 representing 0% confidence, a value of 2 representing 1/7, a value of 3 representing 2/7, and so on.

As an example, the following sample extracts the range and confidence from the first pixel of a DEPTH16-format Image, and converts the confidence to a floating-point value between 0 and 1.f inclusive, with 1.f representing maximum confidence:

    ShortBuffer shortDepthBuffer = img.getPlanes()[0].getBuffer().asShortBuffer();
    short depthSample = shortDepthBuffer.get()
    short depthRange = (short) (depthSample & 0x1FFF);
    short depthConfidence = (short) ((depthSample >> 13) & 0x7);
    float depthPercentage = depthConfidence == 0 ? 1.f : (depthConfidence - 1) / 7.f;
 

This format assumes

  • an even width
  • an even height
  • a horizontal stride multiple of 16 pixels

 y_size = stride * height 
When produced by a camera, the units for the range are millimeters.

Constant Value: 1144402265 (0x44363159)

DEPTH_POINT_CLOUD

Added in API level 23
int DEPTH_POINT_CLOUD

Android sparse depth point cloud format.

A variable-length list of 3D points plus a confidence value, with each point represented by four floats; first the X, Y, Z position coordinates, and then the confidence value.

The number of points is (size of the buffer in bytes) / 16.

The coordinate system and units of the position values depend on the source of the point cloud data. The confidence value is between 0.f and 1.f, inclusive, with 0 representing 0% confidence and 1.f representing 100% confidence in the measured position values.

As an example, the following code extracts the first depth point in a DEPTH_POINT_CLOUD format Image:

    FloatBuffer floatDepthBuffer = img.getPlanes()[0].getBuffer().asFloatBuffer();
    float x = floatDepthBuffer.get();
    float y = floatDepthBuffer.get();
    float z = floatDepthBuffer.get();
    float confidence = floatDepthBuffer.get();
 

Constant Value: 257 (0x00000101)

FLEX_RGBA_8888

Added in API level 23
int FLEX_RGBA_8888

Multi-plane Android RGBA format

This format is a generic RGBA format, capable of describing most RGBA formats, with 8 bits per color sample.

Images in this format are always represented by four separate buffers of data, one for each color plane. Additional information always accompanies the buffers, describing the row stride and the pixel stride for each plane.

The order of planes in the array returned by Image#getPlanes() is guaranteed such that plane #0 is always R (red), plane #1 is always G (green), plane #2 is always B (blue), and plane #3 is always A (alpha). This format may represent pre-multiplied or non-premultiplied alpha.

All four planes are guaranteed to have the same row strides and pixel strides.

For example, the Image object can provide data in this format from a MediaCodec through getOutputImage(int) object.

See also:

Constant Value: 42 (0x0000002a)

FLEX_RGB_888

Added in API level 23
int FLEX_RGB_888

Multi-plane Android RGB format

This format is a generic RGB format, capable of describing most RGB formats, with 8 bits per color sample.

Images in this format are always represented by three separate buffers of data, one for each color plane. Additional information always accompanies the buffers, describing the row stride and the pixel stride for each plane.

The order of planes in the array returned by Image#getPlanes() is guaranteed such that plane #0 is always R (red), plane #1 is always G (green), and plane #2 is always B (blue).

All three planes are guaranteed to have the same row strides and pixel strides.

For example, the Image object can provide data in this format from a MediaCodec through getOutputImage(int) object.

See also:

Constant Value: 41 (0x00000029)

JPEG

Added in API level 8
int JPEG

Compressed JPEG format.

This format is always supported as an output format for the android.hardware.camera2 API, and as a picture format for the older Camera API

Constant Value: 256 (0x00000100)

NV16

Added in API level 8
int NV16

YCbCr format, used for video.

For the android.hardware.camera2 API, the YUV_420_888 format is recommended for YUV output instead.

Whether this format is supported by the old camera API can be determined by getSupportedPreviewFormats().

Constant Value: 16 (0x00000010)

NV21

Added in API level 8
int NV21

YCrCb format used for images, which uses the NV21 encoding format.

This is the default format for Camera preview images, when not otherwise set with setPreviewFormat(int).

For the android.hardware.camera2 API, the YUV_420_888 format is recommended for YUV output instead.

Constant Value: 17 (0x00000011)

PRIVATE

Added in API level 23
int PRIVATE

Android private opaque image format.

The choices of the actual format and pixel data layout are entirely up to the device-specific and framework internal implementations, and may vary depending on use cases even for the same device. The buffers of this format can be produced by components like ImageWriter , and interpreted correctly by consumers like CameraDevice based on the device/framework private information. However, these buffers are not directly accessible to the application.

When an Image of this format is obtained from an ImageReader or ImageWriter, the getPlanes() method will return an empty Plane array.

If a buffer of this format is to be used as an OpenGL ES texture, the framework will assume that sampling the texture will always return an alpha value of 1.0 (i.e. the buffer contains only opaque pixel values).

Constant Value: 34 (0x00000022)

RAW10

Added in API level 21
int RAW10

Android 10-bit raw format

This is a single-plane, 10-bit per pixel, densely packed (in each row), unprocessed format, usually representing raw Bayer-pattern images coming from an image sensor.

In an image buffer with this format, starting from the first pixel of each row, each 4 consecutive pixels are packed into 5 bytes (40 bits). Each one of the first 4 bytes contains the top 8 bits of each pixel, The fifth byte contains the 2 least significant bits of the 4 pixels, the exact layout data for each 4 consecutive pixels is illustrated below (Pi[j] stands for the jth bit of the ith pixel):

bit 7 bit 6 bit 5 bit 4 bit 3 bit 2 bit 1 bit 0
Byte 0: P0[9] P0[8] P0[7] P0[6] P0[5] P0[4] P0[3] P0[2]
Byte 1: P1[9] P1[8] P1[7] P1[6] P1[5] P1[4] P1[3] P1[2]
Byte 2: P2[9] P2[8] P2[7] P2[6] P2[5] P2[4] P2[3] P2[2]
Byte 3: P3[9] P3[8] P3[7] P3[6] P3[5] P3[4] P3[3] P3[2]
Byte 4: P3[1] P3[0] P2[1] P2[0] P1[1] P1[0] P0[1] P0[0]

This format assumes

  • a width multiple of 4 pixels
  • an even height

size = row stride * height
where the row stride is in bytes, not pixels.

Since this is a densely packed format, the pixel stride is always 0. The application must use the pixel data layout defined in above table to access each row data. When row stride is equal to width * (10 / 8), there will be no padding bytes at the end of each row, the entire image data is densely packed. When stride is larger than width * (10 / 8), padding bytes will be present at the end of each row.

For example, the Image object can provide data in this format from a CameraDevice (if supported) through a ImageReader object. The Image#getPlanes() will return a single plane containing the pixel data. The pixel stride is always 0 in getPixelStride(), and the getRowStride() describes the vertical neighboring pixel distance (in bytes) between adjacent rows.

See also:

Constant Value: 37 (0x00000025)

RAW12

Added in API level 23
int RAW12

Android 12-bit raw format

This is a single-plane, 12-bit per pixel, densely packed (in each row), unprocessed format, usually representing raw Bayer-pattern images coming from an image sensor.

In an image buffer with this format, starting from the first pixel of each row, each two consecutive pixels are packed into 3 bytes (24 bits). The first and second byte contains the top 8 bits of first and second pixel. The third byte contains the 4 least significant bits of the two pixels, the exact layout data for each two consecutive pixels is illustrated below (Pi[j] stands for the jth bit of the ith pixel):

bit 7 bit 6 bit 5 bit 4 bit 3 bit 2 bit 1 bit 0
Byte 0: P0[11] P0[10] P0[ 9] P0[ 8] P0[ 7] P0[ 6] P0[ 5] P0[ 4]
Byte 1: P1[11] P1[10] P1[ 9] P1[ 8] P1[ 7] P1[ 6] P1[ 5] P1[ 4]
Byte 2: P1[ 3] P1[ 2] P1[ 1] P1[ 0] P0[ 3] P0[ 2] P0[ 1] P0[ 0]

This format assumes

  • a width multiple of 4 pixels
  • an even height

size = row stride * height
where the row stride is in bytes, not pixels.

Since this is a densely packed format, the pixel stride is always 0. The application must use the pixel data layout defined in above table to access each row data. When row stride is equal to width * (12 / 8), there will be no padding bytes at the end of each row, the entire image data is densely packed. When stride is larger than width * (12 / 8), padding bytes will be present at the end of each row.

For example, the Image object can provide data in this format from a CameraDevice (if supported) through a ImageReader object. The Image#getPlanes() will return a single plane containing the pixel data. The pixel stride is always 0 in getPixelStride(), and the getRowStride() describes the vertical neighboring pixel distance (in bytes) between adjacent rows.

See also:

Constant Value: 38 (0x00000026)

RAW_PRIVATE

Added in API level 24
int RAW_PRIVATE

Private raw camera sensor image format, a single channel image with implementation depedent pixel layout.

RAW_PRIVATE is a format for unprocessed raw image buffers coming from an image sensor. The actual structure of buffers of this format is implementation-dependent.

Constant Value: 36 (0x00000024)

RAW_SENSOR

Added in API level 21
int RAW_SENSOR

General raw camera sensor image format, usually representing a single-channel Bayer-mosaic image. Each pixel color sample is stored with 16 bits of precision.

The layout of the color mosaic, the maximum and minimum encoding values of the raw pixel data, the color space of the image, and all other needed information to interpret a raw sensor image must be queried from the CameraDevice which produced the image.

Constant Value: 32 (0x00000020)

RGB_565

Added in API level 8
int RGB_565

RGB format used for pictures encoded as RGB_565. See setPictureFormat(int).

Constant Value: 4 (0x00000004)

UNKNOWN

Added in API level 8
int UNKNOWN

Constant Value: 0 (0x00000000)

YUV_420_888

Added in API level 19
int YUV_420_888

Multi-plane Android YUV 420 format

This format is a generic YCbCr format, capable of describing any 4:2:0 chroma-subsampled planar or semiplanar buffer (but not fully interleaved), with 8 bits per color sample.

Images in this format are always represented by three separate buffers of data, one for each color plane. Additional information always accompanies the buffers, describing the row stride and the pixel stride for each plane.

The order of planes in the array returned by Image#getPlanes() is guaranteed such that plane #0 is always Y, plane #1 is always U (Cb), and plane #2 is always V (Cr).

The Y-plane is guaranteed not to be interleaved with the U/V planes (in particular, pixel stride is always 1 in yPlane.getPixelStride()).

The U/V planes are guaranteed to have the same row stride and pixel stride (in particular, uPlane.getRowStride() == vPlane.getRowStride() and uPlane.getPixelStride() == vPlane.getPixelStride(); ).

For example, the Image object can provide data in this format from a CameraDevice through a ImageReader object.

See also:

Constant Value: 35 (0x00000023)

YUV_422_888

Added in API level 23
int YUV_422_888

Multi-plane Android YUV 422 format

This format is a generic YCbCr format, capable of describing any 4:2:2 chroma-subsampled (planar, semiplanar or interleaved) format, with 8 bits per color sample.

Images in this format are always represented by three separate buffers of data, one for each color plane. Additional information always accompanies the buffers, describing the row stride and the pixel stride for each plane.

The order of planes in the array returned by Image#getPlanes() is guaranteed such that plane #0 is always Y, plane #1 is always U (Cb), and plane #2 is always V (Cr).

In contrast to the YUV_420_888 format, the Y-plane may have a pixel stride greater than 1 in yPlane.getPixelStride().

The U/V planes are guaranteed to have the same row stride and pixel stride (in particular, uPlane.getRowStride() == vPlane.getRowStride() and uPlane.getPixelStride() == vPlane.getPixelStride(); ).

For example, the Image object can provide data in this format from a MediaCodec through getOutputImage(int) object.

See also:

Constant Value: 39 (0x00000027)

YUV_444_888

Added in API level 23
int YUV_444_888

Multi-plane Android YUV 444 format

This format is a generic YCbCr format, capable of describing any 4:4:4 (planar, semiplanar or interleaved) format, with 8 bits per color sample.

Images in this format are always represented by three separate buffers of data, one for each color plane. Additional information always accompanies the buffers, describing the row stride and the pixel stride for each plane.

The order of planes in the array returned by Image#getPlanes() is guaranteed such that plane #0 is always Y, plane #1 is always U (Cb), and plane #2 is always V (Cr).

In contrast to the YUV_420_888 format, the Y-plane may have a pixel stride greater than 1 in yPlane.getPixelStride().

The U/V planes are guaranteed to have the same row stride and pixel stride (in particular, uPlane.getRowStride() == vPlane.getRowStride() and uPlane.getPixelStride() == vPlane.getPixelStride(); ).

For example, the Image object can provide data in this format from a MediaCodec through getOutputImage(int) object.

See also:

Constant Value: 40 (0x00000028)

YUY2

Added in API level 8
int YUY2

YCbCr format used for images, which uses YUYV (YUY2) encoding format.

For the android.hardware.camera2 API, the YUV_420_888 format is recommended for YUV output instead.

This is an alternative format for Camera preview images. Whether this format is supported by the camera hardware can be determined by getSupportedPreviewFormats().

Constant Value: 20 (0x00000014)

YV12

Added in API level 9
int YV12

Android YUV format.

This format is exposed to software decoders and applications.

YV12 is a 4:2:0 YCrCb planar format comprised of a WxH Y plane followed by (W/2) x (H/2) Cr and Cb planes.

This format assumes

  • an even width
  • an even height
  • a horizontal stride multiple of 16 pixels
  • a vertical stride equal to the height

 y_size = stride * height
 c_stride = ALIGN(stride/2, 16)
 c_size = c_stride * height/2
 size = y_size + c_size * 2
 cr_offset = y_size
 cb_offset = y_size + c_size

For the android.hardware.camera2 API, the YUV_420_888 format is recommended for YUV output instead.

For the older camera API, this format is guaranteed to be supported for Camera preview images since API level 12; for earlier API versions, check getSupportedPreviewFormats().

Note that for camera preview callback use (see setPreviewCallback(Camera.PreviewCallback)), the stride value is the smallest possible; that is, it is equal to:

stride = ALIGN(width, 16)

See also:

Constant Value: 842094169 (0x32315659)

Public constructors

ImageFormat

Added in API level 8
ImageFormat ()

Public methods

getBitsPerPixel

Added in API level 8
int getBitsPerPixel (int format)

Use this function to retrieve the number of bits per pixel of an ImageFormat.

Returns
int the number of bits per pixel of the given format or -1 if the format doesn't exist or is not supported.
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