异步使用 MediaCodec 解码和渲染视频文件 [英] Using MediaCodec asynchronously to decode and render a Video File

问题描述

最近开始尝试使用 Android Media Codec 类来渲染来自本机 C++ 应用程序的视频帧.能够使用同步方法[queueInputBuffer 和 deququeInputBuffer] 使用 Android MediaCodec 类成功解码和呈现音频和视频流.

Recently started toying around with the Android Media Codec class to render the video frames from a Native C++ application. Was able to successfully decode and render both audio and video streams using Android MediaCodec class using synchronous approach[queueInputBuffer and deququeInputBuffer].

Android 有一个很好的参考示例，说明如何在 Native C++ Application 中执行此操作.例如:SimplePlayer.cpp

Android has a good reference example of how to do it in Native C++ Application. Ex : SimplePlayer.cpp

现在我已经开始使用回调实现异步方法，并将输入流提供给这些回调中的编解码器[OnInputBufferAvailable/OnOutPutBufferAvailable].

Now i have started with the implementation of asynchronous approach using callbacks and feed the input streams to codec in those callbacks[OnInputBufferAvailable/ OnOutPutBufferAvailable].

我在互联网上四处寻找示例代码，我能找到的只是基于 Java MediaCodec 类的参考.

I was searching around for a sample code on internet and all i can find are the references which are based on Java MediaCodec class.

如果有人有任何示例参考代码或任何链接到基于 C++ 的 MediaCodec 异步使用来呈现视频文件，那就太好了.

If anyone has any sample reference code or any links to the C++ based asynchronous usage of MediaCodec to render a video file, that would be great.

任何关于这方面的指导也很重要.

Any guidance on this would also be great on this.

推荐答案

将 ExtractDecodeEditEncodeMuxTest 示例从同步模式转换为异步模式的示例可在 https://github.com/mstorsjo/android-decodeencodetest.查看导致此操作的所有步骤的提交历史记录.

An example of converting the ExtractDecodeEditEncodeMuxTest example from synchronous mode to asynchronous mode is available at https://github.com/mstorsjo/android-decodeencodetest. See the commit history for all the steps leading up to this.

这不是 C++，也不是用于渲染，但它至少涵盖了一些基本方面.

This isn't C++ and it isn't for rendering, but it covers a few of the essential aspects at least.

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