public class VideoBitmapDecoder extends Object implements BitmapDecoder<ParcelFileDescriptor>
BitmapDecoder
that can decode a thumbnail frame
Bitmap
from a ParcelFileDescriptor
containing a video.MediaMetadataRetriever
Constructor and Description |
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VideoBitmapDecoder() |
VideoBitmapDecoder(int frame) |
Modifier and Type | Method and Description |
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Bitmap |
decode(ParcelFileDescriptor resource,
BitmapPool bitmapPool,
int outWidth,
int outHeight,
DecodeFormat decodeFormat)
Returns a decoded bitmap for a given resource and target dimensions.
|
String |
getId()
Returns some unique String id that distinguishes this decoder from any other decoder.
|
public VideoBitmapDecoder()
public VideoBitmapDecoder(int frame)
public Bitmap decode(ParcelFileDescriptor resource, BitmapPool bitmapPool, int outWidth, int outHeight, DecodeFormat decodeFormat) throws IOException
BitmapDecoder
decode
in interface BitmapDecoder<ParcelFileDescriptor>
resource
- The resource to decode, managed by the caller, no need to clean it up.bitmapPool
- A bitmap pool that can be used to reuse bitmaps during the load. Any bitmaps created or
obtained from the pool other than the bitmap returned by this method should be returned to the
pool.outWidth
- The target width for the returned bitmap (need not match exactly).outHeight
- The target height for the returned bitmap (need not match exactly).decodeFormat
- The desired configuration for the returned bitmap.IOException
public String getId()
BitmapDecoder
This method can return the empty string if for all practical purposes it applies no transformations to the
data while loading the resource. For Bitmap
s this would mean at a minimum doing no
downsampling and also probably always producing Bitmap
s with
Bitmap.Config.ARGB_8888
as their config.
getId
in interface BitmapDecoder<ParcelFileDescriptor>