YuvImage
public
class
YuvImage
extends Object
YuvImage contains YUV data and provides a method that compresses a region of
the YUV data to a Jpeg. The YUV data should be provided as a single byte
array irrespective of the number of image planes in it.
Currently only ImageFormat.NV21 and ImageFormat.YUY2 are supported.
To compress a rectangle region in the YUV data, users have to specify the
region by left, top, width and height.
Summary
Public constructors |
|---|
YuvImage(byte[] yuv, int format, int width, int height, int[] strides)
Construct an YuvImage.
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Inherited methods |
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 From
class
java.lang.Object
Object
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clone()
Creates and returns a copy of this object.
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boolean
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equals(Object obj)
Indicates whether some other object is "equal to" this one.
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void
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finalize()
Called by the garbage collector on an object when garbage collection
determines that there are no more references to the object.
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final
Class<?>
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getClass()
Returns the runtime class of this Object.
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int
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hashCode()
Returns a hash code value for the object.
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final
void
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notify()
Wakes up a single thread that is waiting on this object's
monitor.
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final
void
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notifyAll()
Wakes up all threads that are waiting on this object's monitor.
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String
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toString()
Returns a string representation of the object.
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final
void
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wait(long millis, int nanos)
Causes the current thread to wait until another thread invokes the
notify() method or the
notifyAll() method for this object, or
some other thread interrupts the current thread, or a certain
amount of real time has elapsed.
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final
void
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wait(long millis)
Causes the current thread to wait until either another thread invokes the
notify() method or the
notifyAll() method for this object, or a
specified amount of time has elapsed.
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final
void
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wait()
Causes the current thread to wait until another thread invokes the
notify() method or the
notifyAll() method for this object.
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Public constructors
YuvImage
YuvImage (byte[] yuv,
int format,
int width,
int height,
int[] strides)
Construct an YuvImage.
| Parameters |
|---|
yuv |
byte:
The YUV data. In the case of more than one image plane, all the planes must be
concatenated into a single byte array. |
format |
int:
The YUV data format as defined in ImageFormat. |
width |
int:
The width of the YuvImage. |
height |
int:
The height of the YuvImage. |
strides |
int:
(Optional) Row bytes of each image plane. If yuv contains padding, the stride
of each image must be provided. If strides is null, the method assumes no
padding and derives the row bytes by format and width itself. |
Public methods
compressToJpeg
boolean compressToJpeg (Rect rectangle,
int quality,
OutputStream stream)
Compress a rectangle region in the YuvImage to a jpeg.
Only ImageFormat.NV21 and ImageFormat.YUY2
are supported for now.
| Parameters |
|---|
rectangle |
Rect:
The rectangle region to be compressed. The medthod checks if rectangle is
inside the image. Also, the method modifies rectangle if the chroma pixels
in it are not matched with the luma pixels in it. |
quality |
int:
Hint to the compressor, 0-100. 0 meaning compress for
small size, 100 meaning compress for max quality. |
stream |
OutputStream:
OutputStream to write the compressed data. |
| Returns |
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boolean |
True if the compression is successful. |
getHeight
int getHeight ()
| Returns |
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int |
the height of the image.
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getStrides
int[] getStrides ()
| Returns |
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int[] |
the number of row bytes in each image plane.
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getWidth
int getWidth ()
| Returns |
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int |
the width of the image.
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getYuvData
byte[] getYuvData ()
| Returns |
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byte[] |
the YUV data.
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getYuvFormat
int getYuvFormat ()
Developers