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< audioExtractor.getTrackCount(); i++) { MediaFormat format = audioExtractor.getTrackFormat(i); String mime = format.getString(MediaFormat.KEY_MIME); if(mime.startsWith(AUDIO)){ d = format.getLong(MediaFormat.KEY_DURATION); audioExtractor.selectTrack(i); audioDecoder = MediaCodec.createDecoderByType(mime); audioDecoder.configure(format, null, null, 0); audioDecoder.start(); break; } } } catch (IOException e) { e.printStackTrace(); } MediaCodec.BufferInfo info = new MediaCodec.BufferInfo(); while (true) { extractorInputBuffer(audioExtractor, audioDecoder); int outIndex = audioDecoder.dequeueOutputBuffer(info, 50000); if (outIndex >

= 0) {ByteBuffer data = audioDecoder.getOutputBuffer (outIndex); if ((info.flags & MediaCodec.BUFFER_FLAG_CODEC_CONFIG)! = 0) {info.size = 0;} if (info.size! = 0) {byte [] bytes = new byte [data.remaining ()] Data.get (bytes,0,bytes.length); data.clear (); try {pcmos.write (bytes);} catch (IOException e) {e.printStackTrace () } if (encoderListener! = null) {int progress = (int) (info.presentationTimeUs + startTime) * 50) / duration); encoderListener.onEncoder (progress);}} audioDecoder.releaseOutputBuffer (outIndex, false) } if ((info.flags & MediaCodec.BUFFER_FLAG_END_OF_STREAM)! = 0) {break;}} audioDecoder.stop (); audioDecoder.release (); audioExtractor.release (); return d;} private void extractorInputBuffer (MediaExtractor mediaExtractor, MediaCodec mediaCodec) {int inputIndex = mediaCodec.dequeueInputBuffer (50000) If (inputIndex > = 0) {ByteBuffer inputBuffer = mediaCodec.getInputBuffer (inputIndex); long sampleTime = mediaExtractor.getSampleTime (); int sampleSize = mediaExtractor.readSampleData (inputBuffer, 0); if (mediaExtractor.advance ()) {mediaCodec.queueInputBuffer (inputIndex, 0, sampleSize, sampleTime, 0) } else {if (sampleSize > 0) {mediaCodec.queueInputBuffer (inputIndex, 0, sampleSize, sampleTime, MediaCodec.BUFFER_FLAG_END_OF_STREAM);} else {mediaCodec.queueInputBuffer (inputIndex, 0,0,0, MediaCodec.BUFFER_FLAG_END_OF_STREAM) }} private int format (int fjingint [] fs) {if (f > = fs [0]) {return fs [0];} else if (f = fs [I]) {return fs [I];} return-1 The progress bar function of jni callback, 50 * / public void setProgress (long size,long total) {if (encoderListener! = null) {int progress = 50 + (int) ((total*50) / size); if (decoderHolder = = null) {encoderListener.onEncoder (progress) } else {encoderListener.onDecoder (decoderHolder,progress);}} public interface OnAudioEncoderListener {void onDecoder (AudioHolder decoderHolder,int progress); void onEncoder (int progress); void onOver (String path);}} use private AudioMerge audioMerge = new AudioMerge (); private List list = new ArrayList () AudioMerge.start (Environment.getExternalStorageDirectory (). GetAbsolutePath () + "/ HMSDK/test_merge.mp3", list); this is the end of the article on "how to develop MediaCodec and lamemp3 multi-segment audio capture and splicing by Android". Thank you for reading! I believe that everyone has a certain understanding of the knowledge of "how Android develops MediaCodec and lamemp3 multi-segment audio interception and splicing". If you want to learn more knowledge, you are welcome to follow the industry information channel.

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