从JCodec图片获取YUV420字节 [英] Get YUV420 bytes from JCodec Picture

问题描述

使用H264Decoder，我想将已解码的YUV420数据作为Java字节数组获取.我搜索了所有内容，但没有找到合适的示例.

Using an H264Decoder I would like to obtain the decoded YUV420 data as a Java byte array. I have searched all over and I don't see any examples that fit.

ByteBuffer buf = ByteBuffer.wrap(h264EncodedByteArray);
H264Decoder decoder = new H264Decoder();
// assume that sps and pps are set on the decoder
Picture out = Picture.create(320, 240, ColorSpace.YUV420); 
Picture real = decoder.decodeFrame(buf, out.getData());

"h264EncodedByteArray"将是来自流或文件的h264编码字节的数组.

The "h264EncodedByteArray" would be an array of h264 encoded bytes from a stream or file.

推荐答案

据我所知，解码时必须提供buf和avcC框.在开始任何解码之前，您必须提供avcC数据.

As far as I can tell the buf and avcC box must be supplied when doing the decode. Before any decoding can commence, you must provide avcC data.

AvcCBox avcCBox = new AvcCBox();
avcCBox.parse(buf);

创建avcC之后，您可以使用以下行获取图片.

After the avcC is created, you can use the following line to get the Picture.

decoder.decodeFrame(H264Utils.splitMOVPacket(buf, avcCBox), out.getData());

在上面的代码中，buf可能包含或可能不包含多个NAL元素.

In the code above the buf may or may not contain multiple NAL elements.

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