WebAudioMediaCodecBridge.java revision f2477e01787aa58f445919b809d89e252beef54f
1c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles)// Copyright (c) 2013 The Chromium Authors. All rights reserved. 2c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles)// Use of this source code is governed by a BSD-style license that can be 3c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles)// found in the LICENSE file. 4c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles) 5c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles)package org.chromium.media; 6c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles) 7c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles)import android.content.Context; 8c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles)import android.media.AudioFormat; 9c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles)import android.media.MediaCodec; 10c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles)import android.media.MediaCodec.BufferInfo; 11c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles)import android.media.MediaExtractor; 12c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles)import android.media.MediaFormat; 13868fa2fe829687343ffae624259930155e16dbd8Torne (Richard Coles)import android.os.ParcelFileDescriptor; 14c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles)import android.util.Log; 15c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles) 16868fa2fe829687343ffae624259930155e16dbd8Torne (Richard Coles)import java.io.File; 17c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles)import java.nio.ByteBuffer; 18c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles) 19c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles)import org.chromium.base.CalledByNative; 20c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles)import org.chromium.base.JNINamespace; 21c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles) 22c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles)@JNINamespace("media") 23c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles)class WebAudioMediaCodecBridge { 24c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles) static final String LOG_TAG = "WebAudioMediaCodec"; 25c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles) // TODO(rtoy): What is the correct timeout value for reading 26c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles) // from a file in memory? 27c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles) static final long TIMEOUT_MICROSECONDS = 500; 28c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles) @CalledByNative 29868fa2fe829687343ffae624259930155e16dbd8Torne (Richard Coles) private static String CreateTempFile(Context ctx) throws java.io.IOException { 30868fa2fe829687343ffae624259930155e16dbd8Torne (Richard Coles) File outputDirectory = ctx.getCacheDir(); 31868fa2fe829687343ffae624259930155e16dbd8Torne (Richard Coles) File outputFile = File.createTempFile("webaudio", ".dat", outputDirectory); 32868fa2fe829687343ffae624259930155e16dbd8Torne (Richard Coles) return outputFile.getAbsolutePath(); 33868fa2fe829687343ffae624259930155e16dbd8Torne (Richard Coles) } 34868fa2fe829687343ffae624259930155e16dbd8Torne (Richard Coles) 35868fa2fe829687343ffae624259930155e16dbd8Torne (Richard Coles) @CalledByNative 36c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles) private static boolean decodeAudioFile(Context ctx, 37f2477e01787aa58f445919b809d89e252beef54fTorne (Richard Coles) long nativeMediaCodecBridge, 38c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles) int inputFD, 39c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles) long dataSize) { 40c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles) 41c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles) if (dataSize < 0 || dataSize > 0x7fffffff) 42c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles) return false; 43c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles) 44c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles) MediaExtractor extractor = new MediaExtractor(); 45c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles) 46c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles) ParcelFileDescriptor encodedFD; 47c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles) encodedFD = ParcelFileDescriptor.adoptFd(inputFD); 48c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles) try { 49c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles) extractor.setDataSource(encodedFD.getFileDescriptor(), 0, dataSize); 50c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles) } catch (Exception e) { 51c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles) e.printStackTrace(); 52c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles) encodedFD.detachFd(); 53c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles) return false; 54c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles) } 55c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles) 56c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles) if (extractor.getTrackCount() <= 0) { 57c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles) encodedFD.detachFd(); 58c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles) return false; 59c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles) } 60c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles) 61c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles) MediaFormat format = extractor.getTrackFormat(0); 62c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles) 63ba5b9a6411cb1792fd21f0a078d7a25cd1ceec16Ben Murdoch // Number of channels specified in the file 64ba5b9a6411cb1792fd21f0a078d7a25cd1ceec16Ben Murdoch int inputChannelCount = format.getInteger(MediaFormat.KEY_CHANNEL_COUNT); 65ba5b9a6411cb1792fd21f0a078d7a25cd1ceec16Ben Murdoch 66ba5b9a6411cb1792fd21f0a078d7a25cd1ceec16Ben Murdoch // Number of channels the decoder will provide. (Not 67ba5b9a6411cb1792fd21f0a078d7a25cd1ceec16Ben Murdoch // necessarily the same as inputChannelCount. See 68ba5b9a6411cb1792fd21f0a078d7a25cd1ceec16Ben Murdoch // crbug.com/266006.) 69ba5b9a6411cb1792fd21f0a078d7a25cd1ceec16Ben Murdoch int outputChannelCount = inputChannelCount; 70ba5b9a6411cb1792fd21f0a078d7a25cd1ceec16Ben Murdoch 71c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles) int sampleRate = format.getInteger(MediaFormat.KEY_SAMPLE_RATE); 72c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles) String mime = format.getString(MediaFormat.KEY_MIME); 73c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles) 74c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles) long durationMicroseconds = 0; 75c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles) if (format.containsKey(MediaFormat.KEY_DURATION)) { 76c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles) try { 77c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles) durationMicroseconds = format.getLong(MediaFormat.KEY_DURATION); 78c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles) } catch (Exception e) { 79c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles) Log.d(LOG_TAG, "Cannot get duration"); 80c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles) } 81c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles) } 82c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles) 831e9bf3e0803691d0a228da41fc608347b6db4340Torne (Richard Coles) Log.d(LOG_TAG, "Initial: Tracks: " + extractor.getTrackCount() + 841e9bf3e0803691d0a228da41fc608347b6db4340Torne (Richard Coles) " Format: " + format); 85c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles) 86c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles) // Create decoder 87c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles) MediaCodec codec = MediaCodec.createDecoderByType(mime); 88c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles) codec.configure(format, null /* surface */, null /* crypto */, 0 /* flags */); 89c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles) codec.start(); 90c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles) 91c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles) ByteBuffer[] codecInputBuffers = codec.getInputBuffers(); 92c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles) ByteBuffer[] codecOutputBuffers = codec.getOutputBuffers(); 93c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles) 94c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles) // A track must be selected and will be used to read samples. 95c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles) extractor.selectTrack(0); 96c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles) 97c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles) boolean sawInputEOS = false; 98c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles) boolean sawOutputEOS = false; 991e9bf3e0803691d0a228da41fc608347b6db4340Torne (Richard Coles) boolean destinationInitialized = false; 100c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles) 101c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles) // Keep processing until the output is done. 102c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles) while (!sawOutputEOS) { 103c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles) if (!sawInputEOS) { 104c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles) // Input side 105c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles) int inputBufIndex = codec.dequeueInputBuffer(TIMEOUT_MICROSECONDS); 106c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles) 107c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles) if (inputBufIndex >= 0) { 108c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles) ByteBuffer dstBuf = codecInputBuffers[inputBufIndex]; 109c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles) int sampleSize = extractor.readSampleData(dstBuf, 0); 110c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles) long presentationTimeMicroSec = 0; 111c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles) 112c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles) if (sampleSize < 0) { 113c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles) sawInputEOS = true; 114c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles) sampleSize = 0; 115c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles) } else { 116c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles) presentationTimeMicroSec = extractor.getSampleTime(); 117c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles) } 118c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles) 119c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles) codec.queueInputBuffer(inputBufIndex, 120c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles) 0, /* offset */ 121c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles) sampleSize, 122c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles) presentationTimeMicroSec, 123c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles) sawInputEOS ? MediaCodec.BUFFER_FLAG_END_OF_STREAM : 0); 124c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles) 125c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles) if (!sawInputEOS) { 126c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles) extractor.advance(); 127c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles) } 128c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles) } 129c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles) } 130c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles) 131c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles) // Output side 132c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles) MediaCodec.BufferInfo info = new BufferInfo(); 133c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles) final int outputBufIndex = codec.dequeueOutputBuffer(info, TIMEOUT_MICROSECONDS); 134c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles) 135c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles) if (outputBufIndex >= 0) { 136c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles) ByteBuffer buf = codecOutputBuffers[outputBufIndex]; 137c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles) 1381e9bf3e0803691d0a228da41fc608347b6db4340Torne (Richard Coles) if (!destinationInitialized) { 1391e9bf3e0803691d0a228da41fc608347b6db4340Torne (Richard Coles) // Initialize the destination as late as possible to 1401e9bf3e0803691d0a228da41fc608347b6db4340Torne (Richard Coles) // catch any changes in format. But be sure to 1411e9bf3e0803691d0a228da41fc608347b6db4340Torne (Richard Coles) // initialize it BEFORE we send any decoded audio, 1421e9bf3e0803691d0a228da41fc608347b6db4340Torne (Richard Coles) // and only initialize once. 1431e9bf3e0803691d0a228da41fc608347b6db4340Torne (Richard Coles) Log.d(LOG_TAG, "Final: Rate: " + sampleRate + 1441e9bf3e0803691d0a228da41fc608347b6db4340Torne (Richard Coles) " Channels: " + inputChannelCount + 1451e9bf3e0803691d0a228da41fc608347b6db4340Torne (Richard Coles) " Mime: " + mime + 1461e9bf3e0803691d0a228da41fc608347b6db4340Torne (Richard Coles) " Duration: " + durationMicroseconds + " microsec"); 1471e9bf3e0803691d0a228da41fc608347b6db4340Torne (Richard Coles) 1481e9bf3e0803691d0a228da41fc608347b6db4340Torne (Richard Coles) nativeInitializeDestination(nativeMediaCodecBridge, 1491e9bf3e0803691d0a228da41fc608347b6db4340Torne (Richard Coles) inputChannelCount, 1501e9bf3e0803691d0a228da41fc608347b6db4340Torne (Richard Coles) sampleRate, 1511e9bf3e0803691d0a228da41fc608347b6db4340Torne (Richard Coles) durationMicroseconds); 1521e9bf3e0803691d0a228da41fc608347b6db4340Torne (Richard Coles) destinationInitialized = true; 1531e9bf3e0803691d0a228da41fc608347b6db4340Torne (Richard Coles) } 1541e9bf3e0803691d0a228da41fc608347b6db4340Torne (Richard Coles) 1551e9bf3e0803691d0a228da41fc608347b6db4340Torne (Richard Coles) if (destinationInitialized && info.size > 0) { 156ba5b9a6411cb1792fd21f0a078d7a25cd1ceec16Ben Murdoch nativeOnChunkDecoded(nativeMediaCodecBridge, buf, info.size, 157ba5b9a6411cb1792fd21f0a078d7a25cd1ceec16Ben Murdoch inputChannelCount, outputChannelCount); 158c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles) } 159c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles) 160c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles) buf.clear(); 161c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles) codec.releaseOutputBuffer(outputBufIndex, false /* render */); 162c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles) 163c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles) if ((info.flags & MediaCodec.BUFFER_FLAG_END_OF_STREAM) != 0) { 164c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles) sawOutputEOS = true; 165c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles) } 166c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles) } else if (outputBufIndex == MediaCodec.INFO_OUTPUT_BUFFERS_CHANGED) { 167c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles) codecOutputBuffers = codec.getOutputBuffers(); 168ba5b9a6411cb1792fd21f0a078d7a25cd1ceec16Ben Murdoch } else if (outputBufIndex == MediaCodec.INFO_OUTPUT_FORMAT_CHANGED) { 169ba5b9a6411cb1792fd21f0a078d7a25cd1ceec16Ben Murdoch MediaFormat newFormat = codec.getOutputFormat(); 170ba5b9a6411cb1792fd21f0a078d7a25cd1ceec16Ben Murdoch outputChannelCount = newFormat.getInteger(MediaFormat.KEY_CHANNEL_COUNT); 1711e9bf3e0803691d0a228da41fc608347b6db4340Torne (Richard Coles) sampleRate = newFormat.getInteger(MediaFormat.KEY_SAMPLE_RATE); 172ba5b9a6411cb1792fd21f0a078d7a25cd1ceec16Ben Murdoch Log.d(LOG_TAG, "output format changed to " + newFormat); 173c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles) } 174c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles) } 175c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles) 176c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles) encodedFD.detachFd(); 177c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles) 178c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles) codec.stop(); 179c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles) codec.release(); 180c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles) codec = null; 181c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles) 182c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles) return true; 183c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles) } 184c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles) 185c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles) private static native void nativeOnChunkDecoded( 186f2477e01787aa58f445919b809d89e252beef54fTorne (Richard Coles) long nativeWebAudioMediaCodecBridge, ByteBuffer buf, int size, 187ba5b9a6411cb1792fd21f0a078d7a25cd1ceec16Ben Murdoch int inputChannelCount, int outputChannelCount); 188c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles) 189c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles) private static native void nativeInitializeDestination( 190f2477e01787aa58f445919b809d89e252beef54fTorne (Richard Coles) long nativeWebAudioMediaCodecBridge, 191ba5b9a6411cb1792fd21f0a078d7a25cd1ceec16Ben Murdoch int inputChannelCount, 192c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles) int sampleRate, 193c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles) long durationMicroseconds); 194c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles)} 195