"Fourth chapter-android platform Mediacodec" codec logic understanding

Suppose what we need to do is a media file synthesizer, the function is to intercept a number of pieces of media files in some fragments, and then the fragments into a new media files, then we can use MEDIACODEC to help us do something.

The general logic of Mediacodec for encoding and decoding is this:

The invocation logic for the main function is as follows:

From the figure, we first use the decoder to take out the multi-segment OutputBuffer data, and then use the encoder to put them into a file. If you want to add captions, stunts, and other effects, then the first to get outputbuffer, and then processing, and finally the processing of the data fed to the encoder, generate the final file.

"Fourth chapter-android platform Mediacodec" codec logic understanding