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Android: Add software fallback wrapper in Default video codec factories

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When both SW and HW video codec is available, create a fallback wrapper.
This CL also makes the ctor public for injecting an external HW codec
factory. This will be useful when making the legacy video codecs
injectable.

Bug: webrtc:7925
Change-Id: I250b18f0c2d5123495436ff432c0442755ab0e94
Reviewed-on: https://webrtc-review.googlesource.com/88366
Commit-Queue: Magnus Jedvert <magjed@webrtc.org>
Reviewed-by: Sami Kalliomäki <sakal@webrtc.org>
Cr-Commit-Position: refs/heads/master@{#23961}
This commit is contained in:
Magnus Jedvert
2018-07-13 10:40:26 +02:00
committed by Commit Bot
parent b5d3802b7a
commit 443959b800
3 changed files with 31 additions and 18 deletions
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27
sdk/android/api/org/webrtc/DefaultVideoDecoderFactory.java
View File

@ -10,27 +10,36 @@
package org.webrtc;
import javax.annotation.Nullable;
import java.util.Arrays;
import java.util.LinkedHashSet;
import java.util.List;
import javax.annotation.Nullable;
/** Helper class that combines HW and SW decoders. */
public class DefaultVideoDecoderFactory implements VideoDecoderFactory {
private final HardwareVideoDecoderFactory hardwareVideoDecoderFactory;
private final SoftwareVideoDecoderFactory softwareVideoDecoderFactory;
private final VideoDecoderFactory hardwareVideoDecoderFactory;
private final VideoDecoderFactory softwareVideoDecoderFactory = new SoftwareVideoDecoderFactory();
/** Create decoder factory using default hardware decoder factory. */
public DefaultVideoDecoderFactory(EglBase.Context eglContext) {
hardwareVideoDecoderFactory = new HardwareVideoDecoderFactory(eglContext);
softwareVideoDecoderFactory = new SoftwareVideoDecoderFactory();
this.hardwareVideoDecoderFactory = new HardwareVideoDecoderFactory(eglContext);
}
/** Create decoder factory using explicit hardware decoder factory. */
DefaultVideoDecoderFactory(VideoDecoderFactory hardwareVideoDecoderFactory) {
this.hardwareVideoDecoderFactory = hardwareVideoDecoderFactory;
}
@Override
public @Nullable VideoDecoder createDecoder(String codecType) {
VideoDecoder decoder = hardwareVideoDecoderFactory.createDecoder(codecType);
if (decoder != null) {
return decoder;
final VideoDecoder softwareDecoder = softwareVideoDecoderFactory.createDecoder(codecType);
final VideoDecoder hardwareDecoder = hardwareVideoDecoderFactory.createDecoder(codecType);
if (hardwareDecoder != null && softwareDecoder != null) {
// Both hardware and software supported, wrap it in a software fallback
return new VideoDecoderFallback(
/* fallback= */ softwareDecoder, /* primary= */ hardwareDecoder);
}
return softwareVideoDecoderFactory.createDecoder(codecType);
return hardwareDecoder != null ? hardwareDecoder : softwareDecoder;
}
@Override