Package 

Class DefaultImageDecoder

  • All Implemented Interfaces:
    com.facebook.imagepipeline.decoder.ImageDecoder 
    
public class DefaultImageDecoder
 implements ImageDecoder

    Decodes images.

    ImageDecoder implements image type recognition and passes decode requests to specialized methods implemented by subclasses.

    On dalvik, it produces 'pinned' purgeable bitmaps.

    Pinned purgeables behave as specified in with one modification. The bitmap is 'pinned' so is never purged.

    For API 21 and higher, this class produces standard Bitmaps, as purgeability is not supported on the most recent versions of Android.

    • Method Summary

      Modifier and Type Method Description
      CloseableImage decode(EncodedImage encodedImage, int length, QualityInfo qualityInfo, ImageDecodeOptions options) Decodes image.
      CloseableImage decodeGif(EncodedImage encodedImage, int length, QualityInfo qualityInfo, ImageDecodeOptions options) Decodes gif into CloseableImage.
      CloseableStaticBitmap decodeStaticImage(EncodedImage encodedImage, ImageDecodeOptions options)
      CloseableStaticBitmap decodeJpeg(EncodedImage encodedImage, int length, QualityInfo qualityInfo, ImageDecodeOptions options, @Nullable() ColorSpace colorSpace) Decodes a partial jpeg.
      CloseableImage decodeAnimatedWebp(EncodedImage encodedImage, int length, QualityInfo qualityInfo, ImageDecodeOptions options) Decode a webp animated image into a CloseableImage.

      • Methods inherited from class com.facebook.imagepipeline.decoder.ImageDecoder

        decode

      • Methods inherited from class java.lang.Object

        clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

    • Constructor Detail

      • DefaultImageDecoder

        DefaultImageDecoder(ImageDecoder animatedGifDecoder, ImageDecoder animatedWebPDecoder, PlatformDecoder platformDecoder)

      • DefaultImageDecoder

        DefaultImageDecoder(ImageDecoder animatedGifDecoder, ImageDecoder animatedWebPDecoder, PlatformDecoder platformDecoder, Map<ImageFormat, ImageDecoder> customDecoders)

      • DefaultImageDecoder

        DefaultImageDecoder(ImageDecoder animatedGifDecoder, ImageDecoder animatedWebPDecoder, PlatformDecoder platformDecoder, Map<ImageFormat, ImageDecoder> customDecoders, Supplier<Boolean> enableEncodedImageColorSpaceUsage)

    • Method Detail

      • decode

        @Nullable() CloseableImage decode(EncodedImage encodedImage, int length, QualityInfo qualityInfo, ImageDecodeOptions options)

        Decodes image.

        Parameters:
        encodedImage - input image (encoded bytes plus meta data)
        length - if image type supports decoding incomplete image then determines where the imagedata should be cut for decoding.
        qualityInfo - quality information for the image
        options - options that can change decode behavior

      • decodeGif

        @Nullable() CloseableImage decodeGif(EncodedImage encodedImage, int length, QualityInfo qualityInfo, ImageDecodeOptions options)

        Decodes gif into CloseableImage.

        Parameters:
        encodedImage - input image (encoded bytes plus meta data)

      • decodeStaticImage

         CloseableStaticBitmap decodeStaticImage(EncodedImage encodedImage, ImageDecodeOptions options)
        Parameters:
        encodedImage - input image (encoded bytes plus meta data)

      • decodeJpeg

         CloseableStaticBitmap decodeJpeg(EncodedImage encodedImage, int length, QualityInfo qualityInfo, ImageDecodeOptions options, @Nullable() ColorSpace colorSpace)

        Decodes a partial jpeg.

        Parameters:
        encodedImage - input image (encoded bytes plus meta data)
        length - amount of currently available data in bytes
        qualityInfo - quality info for the image

      • decodeAnimatedWebp

        @Nullable() CloseableImage decodeAnimatedWebp(EncodedImage encodedImage, int length, QualityInfo qualityInfo, ImageDecodeOptions options)

        Decode a webp animated image into a CloseableImage.

        The image is decoded into a 'pinned' purgeable bitmap.

        Parameters:
        encodedImage - input image (encoded bytes plus meta data)