VideoDecoder

All Known Implementing Classes:

LibvpxVp8Decoder, LibvpxVp9Decoder, VideoDecoderFallback
```
public interface VideoDecoder
```
Interface for a video decoder that can be used in WebRTC. All calls to the class will be made on a single decoding thread.

Nested Class Summary

Nested Classes
Modifier and Type	Interface and Description
`static interface`	`VideoDecoder.Callback`
`static class`	`VideoDecoder.DecodeInfo` Additional info for decoding.
`static class`	`VideoDecoder.Settings` Settings passed to the decoder by WebRTC.

Method Summary

All Methods Instance Methods Abstract Methods Default Methods
Modifier and Type	Method and Description
`default long`	`createNativeVideoDecoder()` The decoder implementation backing this interface is either 1) a Java decoder (e.g., an Android platform decoder), or alternatively 2) a native decoder (e.g., a software decoder or a C++ decoder adapter).
`VideoCodecStatus`	`decode(EncodedImage frame, VideoDecoder.DecodeInfo info)` Request the decoder to decode a frame.
`java.lang.String`	`getImplementationName()` Should return a descriptive name for the implementation.
`boolean`	`getPrefersLateDecoding()` The decoder should return true if it prefers late decoding.
`VideoCodecStatus`	`initDecode(VideoDecoder.Settings settings, VideoDecoder.Callback decodeCallback)` Initializes the decoding process with specified settings.
`VideoCodecStatus`	`release()` Called when the decoder is no longer needed.

- Method Detail
  - createNativeVideoDecoder
```
default long createNativeVideoDecoder()
```
    The decoder implementation backing this interface is either 1) a Java decoder (e.g., an Android platform decoder), or alternatively 2) a native decoder (e.g., a software decoder or a C++ decoder adapter). For case 1), createNativeVideoDecoder() should return zero. In this case, we expect the native library to call the decoder through JNI using the Java interface declared below. For case 2), createNativeVideoDecoder() should return a non-zero value. In this case, we expect the native library to treat the returned value as a raw pointer of type webrtc::VideoDecoder* (ownership is transferred to the caller). The native library should then directly call the webrtc::VideoDecoder interface without going through JNI. All calls to the Java interface methods declared below should thus throw an UnsupportedOperationException.
  - initDecode
```
VideoCodecStatus initDecode(VideoDecoder.Settings settings,
                            VideoDecoder.Callback decodeCallback)
```
    Initializes the decoding process with specified settings. Will be called on the decoding thread before any decode calls.
  - release
```
VideoCodecStatus release()
```
    Called when the decoder is no longer needed. Any more calls to decode will not be made.
  - decode
```
VideoCodecStatus decode(EncodedImage frame,
                        VideoDecoder.DecodeInfo info)
```
    Request the decoder to decode a frame.
  - getPrefersLateDecoding
```
boolean getPrefersLateDecoding()
```
    The decoder should return true if it prefers late decoding. That is, it can not decode infinite number of frames before the decoded frame is consumed.
  - getImplementationName
```
java.lang.String getImplementationName()
```
    Should return a descriptive name for the implementation. Gets called once and cached. May be called from arbitrary thread.

Interface VideoDecoder

Nested Class Summary

Method Summary

Method Detail

createNativeVideoDecoder

initDecode

release

decode

getPrefersLateDecoding

getImplementationName