Builder

class Builder
kotlin.Any
   ↳ androidx.heifwriter.HeifWriter.Builder

Builder class for constructing a HeifWriter object from specified parameters.

Summary

Public constructors
<init>(@NonNull path: String, width: Int, height: Int, inputMode: Int)

Construct a Builder with output specified by its path.
<init>(@NonNull fd: FileDescriptor, width: Int, height: Int, inputMode: Int)

Construct a Builder with output specified by its file descriptor.

Public methods
HeifWriter!

Build a HeifWriter object.
HeifWriter.Builder!
setGridEnabled(gridEnabled: Boolean)

Set whether to enable grid option.
HeifWriter.Builder!
setHandler(@Nullable handler: Handler?)

Provide a handler for the HeifWriter to use.
HeifWriter.Builder!
setMaxImages(maxImages: Int)

Set the maximum number of images to write.
HeifWriter.Builder!
setPrimaryIndex(primaryIndex: Int)

Set the primary image index.
HeifWriter.Builder!
setQuality(quality: Int)

Set the quality for encoding images.
HeifWriter.Builder!
setRotation(rotation: Int)

Set the image rotation in degrees.

Public constructors

<init>

Builder(
    @NonNull path: String, 
    width: Int, 
    height: Int, 
    inputMode: Int)

Construct a Builder with output specified by its path.

Parameters
path String: Path of the file to be written.
width Int: Width of the image.
height Int: Height of the image.
inputMode Int: Input mode for this writer, must be one of INPUT_MODE_BUFFER, INPUT_MODE_SURFACE, or INPUT_MODE_BITMAP.

<init>

Builder(
    @NonNull fd: FileDescriptor, 
    width: Int, 
    height: Int, 
    inputMode: Int)

Construct a Builder with output specified by its file descriptor.

Parameters
fd FileDescriptor: File descriptor of the file to be written.
width Int: Width of the image.
height Int: Height of the image.
inputMode Int: Input mode for this writer, must be one of INPUT_MODE_BUFFER, INPUT_MODE_SURFACE, or INPUT_MODE_BITMAP.

Public methods

build

fun build(): HeifWriter!

Build a HeifWriter object.

Return
HeifWriter!: a HeifWriter object built according to the specifications.
Exceptions
IOException if failed to create the writer, possibly due to failure to create android.media.MediaMuxer or android.media.MediaCodec.

setGridEnabled

fun setGridEnabled(gridEnabled: Boolean): HeifWriter.Builder!

Set whether to enable grid option.

Parameters
gridEnabled Boolean: Whether to enable grid option. If enabled, the tile size will be automatically chosen. Default is to enable.
Return
HeifWriter.Builder!: this Builder object.

setHandler

fun setHandler(@Nullable handler: Handler?): HeifWriter.Builder!

Provide a handler for the HeifWriter to use.

Parameters
handler Handler?: If not null, client will receive all callbacks on the handler's looper. Otherwise, client will receive callbacks on a looper created by the writer. Default is null.
Return
HeifWriter.Builder!: this Builder object.

setMaxImages

fun setMaxImages(maxImages: Int): HeifWriter.Builder!

Set the maximum number of images to write.

Parameters
maxImages Int: Max number of images to write. Frames exceeding this number will not be written to file. The writing can be stopped earlier before this number of images are written by stop(long), except for the input mode of INPUT_MODE_SURFACE, where the EOS timestamp must be specified (via setInputEndOfStreamTimestamp(long) and reached. Default is 1.
Return
HeifWriter.Builder!: this Builder object.

setPrimaryIndex

fun setPrimaryIndex(primaryIndex: Int): HeifWriter.Builder!

Set the primary image index.

Parameters
primaryIndex Int: Index of the image that should be marked as primary, must be within range [0, maxImages - 1] inclusive. Default is 0.
Return
HeifWriter.Builder!: this Builder object.

setQuality

fun setQuality(quality: Int): HeifWriter.Builder!

Set the quality for encoding images.

Parameters
quality Int: A number between 0 and 100 (inclusive), with 100 indicating the best quality supported by this implementation. Default is 100.
Return
HeifWriter.Builder!: this Builder object.

setRotation

fun setRotation(rotation: Int): HeifWriter.Builder!

Set the image rotation in degrees.

Parameters
rotation Int: Rotation angle (clockwise) of the image, must be 0, 90, 180 or 270. Default is 0.
Return
HeifWriter.Builder!: this Builder object.