AudioGroup.cpp revision ff0c3ac9f0e9aa22c0d4cc2b1ca051e1974287ea
173f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh/* 273f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh * Copyright (C) 2010 The Android Open Source Project 373f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh * 473f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh * Licensed under the Apache License, Version 2.0 (the "License"); 573f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh * you may not use this file except in compliance with the License. 673f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh * You may obtain a copy of the License at 773f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh * 873f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh * http://www.apache.org/licenses/LICENSE-2.0 973f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh * 1073f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh * Unless required by applicable law or agreed to in writing, software 1173f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh * distributed under the License is distributed on an "AS IS" BASIS, 1273f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 1373f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh * See the License for the specific language governing permissions and 1473f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh * limitations under the License. 1573f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh */ 1673f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh 1773f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh#include <stdio.h> 1873f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh#include <stdint.h> 1973f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh#include <string.h> 2073f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh#include <errno.h> 2173f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh#include <fcntl.h> 2273f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh#include <sys/epoll.h> 2373f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh#include <sys/types.h> 2473f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh#include <sys/socket.h> 2573f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh#include <sys/stat.h> 2673f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh#include <sys/time.h> 2773f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh#include <time.h> 2873f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh#include <arpa/inet.h> 2973f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh#include <netinet/in.h> 3073f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh 3173f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh#define LOG_TAG "AudioGroup" 3273f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh#include <cutils/atomic.h> 3381b8e1b53a6035d0950309dc24d1500c5acf7f37Eric Laurent#include <cutils/properties.h> 3473f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh#include <utils/Log.h> 3573f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh#include <utils/Errors.h> 3673f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh#include <utils/RefBase.h> 3773f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh#include <utils/threads.h> 3873f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh#include <utils/SystemClock.h> 3973f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh#include <media/AudioSystem.h> 4073f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh#include <media/AudioRecord.h> 4173f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh#include <media/AudioTrack.h> 4273f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh#include <media/mediarecorder.h> 43ff0c3ac9f0e9aa22c0d4cc2b1ca051e1974287eaEric Laurent#include <media/AudioEffect.h> 44ff0c3ac9f0e9aa22c0d4cc2b1ca051e1974287eaEric Laurent#include <audio_effects/effect_aec.h> 4536daedc9bcdadecc3065b2783553804e81a78dcdDima Zavin#include <system/audio.h> 4631a824ddf74276c6f571079fe6afbb71c13bf965Dima Zavin 4773f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh#include "jni.h" 4873f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh#include "JNIHelp.h" 4973f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh 5073f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh#include "AudioCodec.h" 51c7092775516e15983053a58b3b43ff3eb58ac46fChia-chi Yeh#include "EchoSuppressor.h" 5273f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh 5373f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yehextern int parse(JNIEnv *env, jstring jAddress, int port, sockaddr_storage *ss); 5473f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh 5573f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yehnamespace { 5673f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh 5773f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yehusing namespace android; 5873f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh 5973f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yehint gRandom = -1; 6073f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh 6173f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh// We use a circular array to implement jitter buffer. The simplest way is doing 6273f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh// a modulo operation on the index while accessing the array. However modulo can 6373f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh// be expensive on some platforms, such as ARM. Thus we round up the size of the 6473f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh// array to the nearest power of 2 and then use bitwise-and instead of modulo. 65b727dc4e022dd5a64301dffc527db92e023bf156Chia-chi Yeh// Currently we make it 512ms long and assume packet interval is 40ms or less. 66b727dc4e022dd5a64301dffc527db92e023bf156Chia-chi Yeh// The first 80ms is the place where samples get mixed. The rest 432ms is the 67b727dc4e022dd5a64301dffc527db92e023bf156Chia-chi Yeh// real jitter buffer. For a stream at 8000Hz it takes 8192 bytes. These numbers 6873f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh// are chosen by experiments and each of them can be adjusted as needed. 6973f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh 709795c258778208fd96a072b7a91028285aafbc32Chia-chi Yeh// Originally a stream does not send packets when it is receive-only or there is 719795c258778208fd96a072b7a91028285aafbc32Chia-chi Yeh// nothing to mix. However, this causes some problems with certain firewalls and 729795c258778208fd96a072b7a91028285aafbc32Chia-chi Yeh// proxies. A firewall might remove a port mapping when there is no outgoing 739795c258778208fd96a072b7a91028285aafbc32Chia-chi Yeh// packet for a preiod of time, and a proxy might wait for incoming packets from 749795c258778208fd96a072b7a91028285aafbc32Chia-chi Yeh// both sides before start forwarding. To solve these problems, we send out a 759795c258778208fd96a072b7a91028285aafbc32Chia-chi Yeh// silence packet on the stream for every second. It should be good enough to 769795c258778208fd96a072b7a91028285aafbc32Chia-chi Yeh// keep the stream alive with relatively low resources. 779795c258778208fd96a072b7a91028285aafbc32Chia-chi Yeh 7873f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh// Other notes: 7973f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh// + We use elapsedRealtime() to get the time. Since we use 32bit variables 8073f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh// instead of 64bit ones, comparison must be done by subtraction. 8173f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh// + Sampling rate must be multiple of 1000Hz, and packet length must be in 8273f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh// milliseconds. No floating points. 8373f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh// + If we cannot get enough CPU, we drop samples and simulate packet loss. 8473f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh// + Resampling is not done yet, so streams in one group must use the same rate. 85b727dc4e022dd5a64301dffc527db92e023bf156Chia-chi Yeh// For the first release only 8000Hz is supported. 86b727dc4e022dd5a64301dffc527db92e023bf156Chia-chi Yeh 87b727dc4e022dd5a64301dffc527db92e023bf156Chia-chi Yeh#define BUFFER_SIZE 512 88b727dc4e022dd5a64301dffc527db92e023bf156Chia-chi Yeh#define HISTORY_SIZE 80 89b727dc4e022dd5a64301dffc527db92e023bf156Chia-chi Yeh#define MEASURE_PERIOD 2000 9073f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh 9173f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yehclass AudioStream 9273f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh{ 9373f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yehpublic: 9473f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh AudioStream(); 9573f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh ~AudioStream(); 9673f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh bool set(int mode, int socket, sockaddr_storage *remote, 970d2c37c274f1db29f51f1d078f240be13b784bf2Chia-chi Yeh AudioCodec *codec, int sampleRate, int sampleCount, 9873f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh int codecType, int dtmfType); 9973f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh 10073f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh void sendDtmf(int event); 10173f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh bool mix(int32_t *output, int head, int tail, int sampleRate); 10273f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh void encode(int tick, AudioStream *chain); 10373f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh void decode(int tick); 10473f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh 105a54e36694b3909ef367867eb7516b2d6f6031261Chia-chi Yehprivate: 10673f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh enum { 10773f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh NORMAL = 0, 10873f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh SEND_ONLY = 1, 10973f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh RECEIVE_ONLY = 2, 11073f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh LAST_MODE = 2, 11173f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh }; 11273f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh 11373f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh int mMode; 11473f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh int mSocket; 11573f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh sockaddr_storage mRemote; 11673f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh AudioCodec *mCodec; 11773f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh uint32_t mCodecMagic; 11873f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh uint32_t mDtmfMagic; 119f703412e867486aef60daf3f025d03794c19821fChia-chi Yeh bool mFixRemote; 12073f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh 12173f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh int mTick; 12273f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh int mSampleRate; 12373f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh int mSampleCount; 12473f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh int mInterval; 1259795c258778208fd96a072b7a91028285aafbc32Chia-chi Yeh int mKeepAlive; 12673f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh 12773f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh int16_t *mBuffer; 12873f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh int mBufferMask; 12973f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh int mBufferHead; 13073f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh int mBufferTail; 131b727dc4e022dd5a64301dffc527db92e023bf156Chia-chi Yeh int mLatencyTimer; 13273f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh int mLatencyScore; 13373f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh 13473f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh uint16_t mSequence; 13573f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh uint32_t mTimestamp; 13673f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh uint32_t mSsrc; 13773f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh 13873f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh int mDtmfEvent; 13973f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh int mDtmfStart; 14073f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh 14173f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh AudioStream *mNext; 14273f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh 14373f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh friend class AudioGroup; 14473f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh}; 14573f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh 14673f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi YehAudioStream::AudioStream() 14773f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh{ 14873f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh mSocket = -1; 14973f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh mCodec = NULL; 15073f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh mBuffer = NULL; 15173f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh mNext = NULL; 15273f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh} 15373f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh 15473f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi YehAudioStream::~AudioStream() 15573f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh{ 15673f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh close(mSocket); 15773f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh delete mCodec; 15873f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh delete [] mBuffer; 15973f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh LOGD("stream[%d] is dead", mSocket); 16073f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh} 16173f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh 16273f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yehbool AudioStream::set(int mode, int socket, sockaddr_storage *remote, 1630d2c37c274f1db29f51f1d078f240be13b784bf2Chia-chi Yeh AudioCodec *codec, int sampleRate, int sampleCount, 16473f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh int codecType, int dtmfType) 16573f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh{ 16673f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh if (mode < 0 || mode > LAST_MODE) { 16773f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh return false; 16873f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh } 16973f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh mMode = mode; 17073f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh 17173f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh mCodecMagic = (0x8000 | codecType) << 16; 17273f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh mDtmfMagic = (dtmfType == -1) ? 0 : (0x8000 | dtmfType) << 16; 17373f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh 17473f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh mTick = elapsedRealtime(); 17573f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh mSampleRate = sampleRate / 1000; 17673f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh mSampleCount = sampleCount; 17773f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh mInterval = mSampleCount / mSampleRate; 17873f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh 17973f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh // Allocate jitter buffer. 180b727dc4e022dd5a64301dffc527db92e023bf156Chia-chi Yeh for (mBufferMask = 8; mBufferMask < mSampleRate; mBufferMask <<= 1); 181b727dc4e022dd5a64301dffc527db92e023bf156Chia-chi Yeh mBufferMask *= BUFFER_SIZE; 18273f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh mBuffer = new int16_t[mBufferMask]; 18373f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh --mBufferMask; 18473f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh mBufferHead = 0; 18573f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh mBufferTail = 0; 186b727dc4e022dd5a64301dffc527db92e023bf156Chia-chi Yeh mLatencyTimer = 0; 18773f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh mLatencyScore = 0; 18873f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh 18973f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh // Initialize random bits. 19073f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh read(gRandom, &mSequence, sizeof(mSequence)); 19173f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh read(gRandom, &mTimestamp, sizeof(mTimestamp)); 19273f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh read(gRandom, &mSsrc, sizeof(mSsrc)); 19373f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh 19473f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh mDtmfEvent = -1; 19573f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh mDtmfStart = 0; 19673f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh 1970d2c37c274f1db29f51f1d078f240be13b784bf2Chia-chi Yeh // Only take over these things when succeeded. 19873f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh mSocket = socket; 1990d2c37c274f1db29f51f1d078f240be13b784bf2Chia-chi Yeh if (codec) { 2000d2c37c274f1db29f51f1d078f240be13b784bf2Chia-chi Yeh mRemote = *remote; 2010d2c37c274f1db29f51f1d078f240be13b784bf2Chia-chi Yeh mCodec = codec; 202f703412e867486aef60daf3f025d03794c19821fChia-chi Yeh 203f703412e867486aef60daf3f025d03794c19821fChia-chi Yeh // Here we should never get an private address, but some buggy proxy 204f703412e867486aef60daf3f025d03794c19821fChia-chi Yeh // servers do give us one. To solve this, we replace the address when 205f703412e867486aef60daf3f025d03794c19821fChia-chi Yeh // the first time we successfully decode an incoming packet. 206f703412e867486aef60daf3f025d03794c19821fChia-chi Yeh mFixRemote = false; 207f703412e867486aef60daf3f025d03794c19821fChia-chi Yeh if (remote->ss_family == AF_INET) { 208f703412e867486aef60daf3f025d03794c19821fChia-chi Yeh unsigned char *address = 209f703412e867486aef60daf3f025d03794c19821fChia-chi Yeh (unsigned char *)&((sockaddr_in *)remote)->sin_addr; 210f703412e867486aef60daf3f025d03794c19821fChia-chi Yeh if (address[0] == 10 || 211f703412e867486aef60daf3f025d03794c19821fChia-chi Yeh (address[0] == 172 && (address[1] >> 4) == 1) || 212f703412e867486aef60daf3f025d03794c19821fChia-chi Yeh (address[0] == 192 && address[1] == 168)) { 213f703412e867486aef60daf3f025d03794c19821fChia-chi Yeh mFixRemote = true; 214f703412e867486aef60daf3f025d03794c19821fChia-chi Yeh } 215f703412e867486aef60daf3f025d03794c19821fChia-chi Yeh } 2160d2c37c274f1db29f51f1d078f240be13b784bf2Chia-chi Yeh } 21773f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh 218d85beac45c12a65076a1c157681de9a5b03bdec7Chia-chi Yeh LOGD("stream[%d] is configured as %s %dkHz %dms mode %d", mSocket, 219d85beac45c12a65076a1c157681de9a5b03bdec7Chia-chi Yeh (codec ? codec->name : "RAW"), mSampleRate, mInterval, mMode); 22073f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh return true; 22173f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh} 22273f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh 22373f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yehvoid AudioStream::sendDtmf(int event) 22473f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh{ 22573f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh if (mDtmfMagic != 0) { 22673f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh mDtmfEvent = event << 24; 22773f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh mDtmfStart = mTimestamp + mSampleCount; 22873f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh } 22973f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh} 23073f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh 23173f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yehbool AudioStream::mix(int32_t *output, int head, int tail, int sampleRate) 23273f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh{ 23373f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh if (mMode == SEND_ONLY) { 23473f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh return false; 23573f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh } 23673f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh 23773f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh if (head - mBufferHead < 0) { 23873f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh head = mBufferHead; 23973f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh } 24073f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh if (tail - mBufferTail > 0) { 24173f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh tail = mBufferTail; 24273f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh } 24373f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh if (tail - head <= 0) { 24473f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh return false; 24573f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh } 24673f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh 24773f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh head *= mSampleRate; 24873f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh tail *= mSampleRate; 24973f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh 25073f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh if (sampleRate == mSampleRate) { 25173f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh for (int i = head; i - tail < 0; ++i) { 25273f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh output[i - head] += mBuffer[i & mBufferMask]; 25373f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh } 25473f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh } else { 25573f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh // TODO: implement resampling. 25673f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh return false; 25773f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh } 25873f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh return true; 25973f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh} 26073f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh 26173f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yehvoid AudioStream::encode(int tick, AudioStream *chain) 26273f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh{ 26373f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh if (tick - mTick >= mInterval) { 26473f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh // We just missed the train. Pretend that packets in between are lost. 26573f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh int skipped = (tick - mTick) / mInterval; 26673f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh mTick += skipped * mInterval; 26773f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh mSequence += skipped; 26873f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh mTimestamp += skipped * mSampleCount; 269d85beac45c12a65076a1c157681de9a5b03bdec7Chia-chi Yeh LOGV("stream[%d] skips %d packets", mSocket, skipped); 27073f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh } 27173f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh 27273f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh tick = mTick; 27373f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh mTick += mInterval; 27473f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh ++mSequence; 27573f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh mTimestamp += mSampleCount; 27673f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh 27773f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh // If there is an ongoing DTMF event, send it now. 2789795c258778208fd96a072b7a91028285aafbc32Chia-chi Yeh if (mMode != RECEIVE_ONLY && mDtmfEvent != -1) { 27973f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh int duration = mTimestamp - mDtmfStart; 28073f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh // Make sure duration is reasonable. 28173f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh if (duration >= 0 && duration < mSampleRate * 100) { 28273f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh duration += mSampleCount; 28373f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh int32_t buffer[4] = { 28473f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh htonl(mDtmfMagic | mSequence), 28573f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh htonl(mDtmfStart), 28673f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh mSsrc, 28773f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh htonl(mDtmfEvent | duration), 28873f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh }; 28973f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh if (duration >= mSampleRate * 100) { 29073f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh buffer[3] |= htonl(1 << 23); 29173f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh mDtmfEvent = -1; 29273f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh } 29373f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh sendto(mSocket, buffer, sizeof(buffer), MSG_DONTWAIT, 29473f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh (sockaddr *)&mRemote, sizeof(mRemote)); 29573f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh return; 29673f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh } 29773f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh mDtmfEvent = -1; 29873f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh } 29973f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh 30073f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh int32_t buffer[mSampleCount + 3]; 3019795c258778208fd96a072b7a91028285aafbc32Chia-chi Yeh int16_t samples[mSampleCount]; 3029795c258778208fd96a072b7a91028285aafbc32Chia-chi Yeh if (mMode == RECEIVE_ONLY) { 3039795c258778208fd96a072b7a91028285aafbc32Chia-chi Yeh if ((mTick ^ mKeepAlive) >> 10 == 0) { 3049795c258778208fd96a072b7a91028285aafbc32Chia-chi Yeh return; 30573f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh } 3069795c258778208fd96a072b7a91028285aafbc32Chia-chi Yeh mKeepAlive = mTick; 3079795c258778208fd96a072b7a91028285aafbc32Chia-chi Yeh memset(samples, 0, sizeof(samples)); 3089795c258778208fd96a072b7a91028285aafbc32Chia-chi Yeh } else { 3099795c258778208fd96a072b7a91028285aafbc32Chia-chi Yeh // Mix all other streams. 3109795c258778208fd96a072b7a91028285aafbc32Chia-chi Yeh bool mixed = false; 3119795c258778208fd96a072b7a91028285aafbc32Chia-chi Yeh memset(buffer, 0, sizeof(buffer)); 3129795c258778208fd96a072b7a91028285aafbc32Chia-chi Yeh while (chain) { 3139795c258778208fd96a072b7a91028285aafbc32Chia-chi Yeh if (chain != this && 3149795c258778208fd96a072b7a91028285aafbc32Chia-chi Yeh chain->mix(buffer, tick - mInterval, tick, mSampleRate)) { 3159795c258778208fd96a072b7a91028285aafbc32Chia-chi Yeh mixed = true; 3169795c258778208fd96a072b7a91028285aafbc32Chia-chi Yeh } 3179795c258778208fd96a072b7a91028285aafbc32Chia-chi Yeh chain = chain->mNext; 318ea7bed2487a9460ad2c01cda9ded8035e0b0c945repo sync } 31973f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh 3209795c258778208fd96a072b7a91028285aafbc32Chia-chi Yeh if (mixed) { 3219795c258778208fd96a072b7a91028285aafbc32Chia-chi Yeh // Saturate into 16 bits. 3229795c258778208fd96a072b7a91028285aafbc32Chia-chi Yeh for (int i = 0; i < mSampleCount; ++i) { 3239795c258778208fd96a072b7a91028285aafbc32Chia-chi Yeh int32_t sample = buffer[i]; 3249795c258778208fd96a072b7a91028285aafbc32Chia-chi Yeh if (sample < -32768) { 3259795c258778208fd96a072b7a91028285aafbc32Chia-chi Yeh sample = -32768; 3269795c258778208fd96a072b7a91028285aafbc32Chia-chi Yeh } 3279795c258778208fd96a072b7a91028285aafbc32Chia-chi Yeh if (sample > 32767) { 3289795c258778208fd96a072b7a91028285aafbc32Chia-chi Yeh sample = 32767; 3299795c258778208fd96a072b7a91028285aafbc32Chia-chi Yeh } 3309795c258778208fd96a072b7a91028285aafbc32Chia-chi Yeh samples[i] = sample; 3319795c258778208fd96a072b7a91028285aafbc32Chia-chi Yeh } 3329795c258778208fd96a072b7a91028285aafbc32Chia-chi Yeh } else { 3339795c258778208fd96a072b7a91028285aafbc32Chia-chi Yeh if ((mTick ^ mKeepAlive) >> 10 == 0) { 3349795c258778208fd96a072b7a91028285aafbc32Chia-chi Yeh return; 3359795c258778208fd96a072b7a91028285aafbc32Chia-chi Yeh } 3369795c258778208fd96a072b7a91028285aafbc32Chia-chi Yeh mKeepAlive = mTick; 3379795c258778208fd96a072b7a91028285aafbc32Chia-chi Yeh memset(samples, 0, sizeof(samples)); 3389795c258778208fd96a072b7a91028285aafbc32Chia-chi Yeh LOGV("stream[%d] no data", mSocket); 33973f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh } 34073f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh } 3419795c258778208fd96a072b7a91028285aafbc32Chia-chi Yeh 34273f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh if (!mCodec) { 34373f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh // Special case for device stream. 34473f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh send(mSocket, samples, sizeof(samples), MSG_DONTWAIT); 34573f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh return; 34673f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh } 34773f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh 3489795c258778208fd96a072b7a91028285aafbc32Chia-chi Yeh // Cook the packet and send it out. 34973f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh buffer[0] = htonl(mCodecMagic | mSequence); 35073f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh buffer[1] = htonl(mTimestamp); 35173f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh buffer[2] = mSsrc; 35273f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh int length = mCodec->encode(&buffer[3], samples); 35373f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh if (length <= 0) { 354d85beac45c12a65076a1c157681de9a5b03bdec7Chia-chi Yeh LOGV("stream[%d] encoder error", mSocket); 35573f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh return; 35673f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh } 35773f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh sendto(mSocket, buffer, length + 12, MSG_DONTWAIT, (sockaddr *)&mRemote, 35873f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh sizeof(mRemote)); 35973f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh} 36073f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh 36173f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yehvoid AudioStream::decode(int tick) 36273f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh{ 36373f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh char c; 36473f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh if (mMode == SEND_ONLY) { 36573f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh recv(mSocket, &c, 1, MSG_DONTWAIT); 36673f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh return; 36773f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh } 36873f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh 36973f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh // Make sure mBufferHead and mBufferTail are reasonable. 370b727dc4e022dd5a64301dffc527db92e023bf156Chia-chi Yeh if ((unsigned int)(tick + BUFFER_SIZE - mBufferHead) > BUFFER_SIZE * 2) { 371b727dc4e022dd5a64301dffc527db92e023bf156Chia-chi Yeh mBufferHead = tick - HISTORY_SIZE; 37273f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh mBufferTail = mBufferHead; 37373f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh } 37473f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh 375b727dc4e022dd5a64301dffc527db92e023bf156Chia-chi Yeh if (tick - mBufferHead > HISTORY_SIZE) { 37673f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh // Throw away outdated samples. 377b727dc4e022dd5a64301dffc527db92e023bf156Chia-chi Yeh mBufferHead = tick - HISTORY_SIZE; 37873f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh if (mBufferTail - mBufferHead < 0) { 37973f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh mBufferTail = mBufferHead; 38073f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh } 38173f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh } 38273f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh 383b727dc4e022dd5a64301dffc527db92e023bf156Chia-chi Yeh // Adjust the jitter buffer if the latency keeps larger than two times of the 384b727dc4e022dd5a64301dffc527db92e023bf156Chia-chi Yeh // packet interval in the past two seconds. 385b727dc4e022dd5a64301dffc527db92e023bf156Chia-chi Yeh int score = mBufferTail - tick - mInterval * 2; 386b727dc4e022dd5a64301dffc527db92e023bf156Chia-chi Yeh if (mLatencyScore > score) { 387b727dc4e022dd5a64301dffc527db92e023bf156Chia-chi Yeh mLatencyScore = score; 388b727dc4e022dd5a64301dffc527db92e023bf156Chia-chi Yeh } 389b727dc4e022dd5a64301dffc527db92e023bf156Chia-chi Yeh if (mLatencyScore <= 0) { 390b727dc4e022dd5a64301dffc527db92e023bf156Chia-chi Yeh mLatencyTimer = tick; 391b727dc4e022dd5a64301dffc527db92e023bf156Chia-chi Yeh mLatencyScore = score; 392b727dc4e022dd5a64301dffc527db92e023bf156Chia-chi Yeh } else if (tick - mLatencyTimer >= MEASURE_PERIOD) { 393d85beac45c12a65076a1c157681de9a5b03bdec7Chia-chi Yeh LOGV("stream[%d] reduces latency of %dms", mSocket, mLatencyScore); 394b727dc4e022dd5a64301dffc527db92e023bf156Chia-chi Yeh mBufferTail -= mLatencyScore; 395b727dc4e022dd5a64301dffc527db92e023bf156Chia-chi Yeh mLatencyTimer = tick; 39673f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh } 39773f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh 398b727dc4e022dd5a64301dffc527db92e023bf156Chia-chi Yeh if (mBufferTail - mBufferHead > BUFFER_SIZE - mInterval) { 39973f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh // Buffer overflow. Drop the packet. 400d85beac45c12a65076a1c157681de9a5b03bdec7Chia-chi Yeh LOGV("stream[%d] buffer overflow", mSocket); 40173f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh recv(mSocket, &c, 1, MSG_DONTWAIT); 40273f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh return; 40373f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh } 40473f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh 40573f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh // Receive the packet and decode it. 40673f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh int16_t samples[mSampleCount]; 40773f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh int length = 0; 40873f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh if (!mCodec) { 40973f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh // Special case for device stream. 41073f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh length = recv(mSocket, samples, sizeof(samples), 41173f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh MSG_TRUNC | MSG_DONTWAIT) >> 1; 41273f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh } else { 41373f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh __attribute__((aligned(4))) uint8_t buffer[2048]; 414f703412e867486aef60daf3f025d03794c19821fChia-chi Yeh sockaddr_storage remote; 415f703412e867486aef60daf3f025d03794c19821fChia-chi Yeh socklen_t len = sizeof(remote); 416f703412e867486aef60daf3f025d03794c19821fChia-chi Yeh 41764d2d433d0f4d37fccf2d98109d22f768c71f0dcChung-yih Wang length = recvfrom(mSocket, buffer, sizeof(buffer), 418f703412e867486aef60daf3f025d03794c19821fChia-chi Yeh MSG_TRUNC | MSG_DONTWAIT, (sockaddr *)&remote, &len); 41973f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh 42073f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh // Do we need to check SSRC, sequence, and timestamp? They are not 42119f94d0256b9d50fe2656dc5c27ee56a24f92247Chia-chi Yeh // reliable but at least they can be used to identify duplicates? 42273f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh if (length < 12 || length > (int)sizeof(buffer) || 42373f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh (ntohl(*(uint32_t *)buffer) & 0xC07F0000) != mCodecMagic) { 424d85beac45c12a65076a1c157681de9a5b03bdec7Chia-chi Yeh LOGV("stream[%d] malformed packet", mSocket); 42573f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh return; 42673f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh } 42773f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh int offset = 12 + ((buffer[0] & 0x0F) << 2); 42873f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh if ((buffer[0] & 0x10) != 0) { 42973f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh offset += 4 + (ntohs(*(uint16_t *)&buffer[offset + 2]) << 2); 43073f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh } 43173f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh if ((buffer[0] & 0x20) != 0) { 43273f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh length -= buffer[length - 1]; 43373f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh } 43473f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh length -= offset; 43573f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh if (length >= 0) { 43673f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh length = mCodec->decode(samples, &buffer[offset], length); 43773f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh } 438f703412e867486aef60daf3f025d03794c19821fChia-chi Yeh if (length > 0 && mFixRemote) { 439f703412e867486aef60daf3f025d03794c19821fChia-chi Yeh mRemote = remote; 440f703412e867486aef60daf3f025d03794c19821fChia-chi Yeh mFixRemote = false; 441f703412e867486aef60daf3f025d03794c19821fChia-chi Yeh } 44273f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh } 443f703412e867486aef60daf3f025d03794c19821fChia-chi Yeh if (length <= 0) { 444d85beac45c12a65076a1c157681de9a5b03bdec7Chia-chi Yeh LOGV("stream[%d] decoder error", mSocket); 44573f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh return; 44673f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh } 44773f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh 44873f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh if (tick - mBufferTail > 0) { 449b727dc4e022dd5a64301dffc527db92e023bf156Chia-chi Yeh // Buffer underrun. Reset the jitter buffer. 450d85beac45c12a65076a1c157681de9a5b03bdec7Chia-chi Yeh LOGV("stream[%d] buffer underrun", mSocket); 45173f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh if (mBufferTail - mBufferHead <= 0) { 452b727dc4e022dd5a64301dffc527db92e023bf156Chia-chi Yeh mBufferHead = tick + mInterval; 45373f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh mBufferTail = mBufferHead; 45473f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh } else { 455b727dc4e022dd5a64301dffc527db92e023bf156Chia-chi Yeh int tail = (tick + mInterval) * mSampleRate; 45673f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh for (int i = mBufferTail * mSampleRate; i - tail < 0; ++i) { 45773f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh mBuffer[i & mBufferMask] = 0; 45873f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh } 459b727dc4e022dd5a64301dffc527db92e023bf156Chia-chi Yeh mBufferTail = tick + mInterval; 46073f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh } 46173f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh } 46273f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh 46373f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh // Append to the jitter buffer. 46473f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh int tail = mBufferTail * mSampleRate; 46573f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh for (int i = 0; i < mSampleCount; ++i) { 46673f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh mBuffer[tail & mBufferMask] = samples[i]; 46773f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh ++tail; 46873f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh } 46973f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh mBufferTail += mInterval; 47073f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh} 47173f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh 47273f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh//------------------------------------------------------------------------------ 47373f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh 47473f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yehclass AudioGroup 47573f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh{ 47673f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yehpublic: 47773f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh AudioGroup(); 47873f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh ~AudioGroup(); 47973f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh bool set(int sampleRate, int sampleCount); 48073f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh 48173f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh bool setMode(int mode); 48273f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh bool sendDtmf(int event); 48373f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh bool add(AudioStream *stream); 48473f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh bool remove(int socket); 485ff0c3ac9f0e9aa22c0d4cc2b1ca051e1974287eaEric Laurent bool platformHasAec() { return mPlatformHasAec; } 48673f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh 487a54e36694b3909ef367867eb7516b2d6f6031261Chia-chi Yehprivate: 48873f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh enum { 48973f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh ON_HOLD = 0, 49073f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh MUTED = 1, 49173f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh NORMAL = 2, 49204fcfe3ce9fdc5d3487c9760092649afc2de2dc8Chia-chi Yeh ECHO_SUPPRESSION = 3, 49373f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh LAST_MODE = 3, 49473f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh }; 495d3cd43211e94d0cd1dbb7d0c35b01412eea4b5b8Chia-chi Yeh 496ff0c3ac9f0e9aa22c0d4cc2b1ca051e1974287eaEric Laurent bool checkPlatformAec(); 497ff0c3ac9f0e9aa22c0d4cc2b1ca051e1974287eaEric Laurent 49873f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh AudioStream *mChain; 49973f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh int mEventQueue; 50073f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh volatile int mDtmfEvent; 50173f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh 502d3cd43211e94d0cd1dbb7d0c35b01412eea4b5b8Chia-chi Yeh int mMode; 503d3cd43211e94d0cd1dbb7d0c35b01412eea4b5b8Chia-chi Yeh int mSampleRate; 50473f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh int mSampleCount; 50573f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh int mDeviceSocket; 506ff0c3ac9f0e9aa22c0d4cc2b1ca051e1974287eaEric Laurent bool mPlatformHasAec; 50773f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh 50873f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh class NetworkThread : public Thread 50973f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh { 51073f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh public: 51173f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh NetworkThread(AudioGroup *group) : Thread(false), mGroup(group) {} 51273f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh 51373f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh bool start() 51473f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh { 51573f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh if (run("Network", ANDROID_PRIORITY_AUDIO) != NO_ERROR) { 51673f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh LOGE("cannot start network thread"); 51773f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh return false; 51873f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh } 51973f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh return true; 52073f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh } 52173f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh 52273f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh private: 52373f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh AudioGroup *mGroup; 524d3cd43211e94d0cd1dbb7d0c35b01412eea4b5b8Chia-chi Yeh bool threadLoop(); 52573f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh }; 52673f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh sp<NetworkThread> mNetworkThread; 52773f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh 52873f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh class DeviceThread : public Thread 52973f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh { 53073f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh public: 53173f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh DeviceThread(AudioGroup *group) : Thread(false), mGroup(group) {} 53273f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh 53373f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh bool start() 53473f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh { 53573f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh if (run("Device", ANDROID_PRIORITY_AUDIO) != NO_ERROR) { 53673f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh LOGE("cannot start device thread"); 53773f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh return false; 53873f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh } 53973f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh return true; 54073f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh } 54173f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh 54273f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh private: 54373f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh AudioGroup *mGroup; 544d3cd43211e94d0cd1dbb7d0c35b01412eea4b5b8Chia-chi Yeh bool threadLoop(); 54573f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh }; 54673f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh sp<DeviceThread> mDeviceThread; 54773f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh}; 54873f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh 54973f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi YehAudioGroup::AudioGroup() 55073f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh{ 55173f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh mMode = ON_HOLD; 55273f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh mChain = NULL; 55373f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh mEventQueue = -1; 55473f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh mDtmfEvent = -1; 55573f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh mDeviceSocket = -1; 55673f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh mNetworkThread = new NetworkThread(this); 55773f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh mDeviceThread = new DeviceThread(this); 558ff0c3ac9f0e9aa22c0d4cc2b1ca051e1974287eaEric Laurent mPlatformHasAec = checkPlatformAec(); 55973f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh} 56073f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh 56173f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi YehAudioGroup::~AudioGroup() 56273f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh{ 56373f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh mNetworkThread->requestExitAndWait(); 56473f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh mDeviceThread->requestExitAndWait(); 56573f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh close(mEventQueue); 56673f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh close(mDeviceSocket); 56773f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh while (mChain) { 56873f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh AudioStream *next = mChain->mNext; 56973f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh delete mChain; 57073f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh mChain = next; 57173f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh } 57273f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh LOGD("group[%d] is dead", mDeviceSocket); 57373f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh} 57473f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh 57573f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yehbool AudioGroup::set(int sampleRate, int sampleCount) 57673f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh{ 57773f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh mEventQueue = epoll_create(2); 57873f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh if (mEventQueue == -1) { 57973f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh LOGE("epoll_create: %s", strerror(errno)); 58073f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh return false; 58173f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh } 58273f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh 583d3cd43211e94d0cd1dbb7d0c35b01412eea4b5b8Chia-chi Yeh mSampleRate = sampleRate; 58473f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh mSampleCount = sampleCount; 58573f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh 58673f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh // Create device socket. 58773f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh int pair[2]; 58873f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh if (socketpair(AF_UNIX, SOCK_DGRAM, 0, pair)) { 58973f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh LOGE("socketpair: %s", strerror(errno)); 59073f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh return false; 59173f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh } 59273f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh mDeviceSocket = pair[0]; 59373f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh 59473f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh // Create device stream. 59573f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh mChain = new AudioStream; 59673f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh if (!mChain->set(AudioStream::NORMAL, pair[1], NULL, NULL, 59773f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh sampleRate, sampleCount, -1, -1)) { 59873f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh close(pair[1]); 59973f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh LOGE("cannot initialize device stream"); 60073f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh return false; 60173f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh } 60273f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh 603d3cd43211e94d0cd1dbb7d0c35b01412eea4b5b8Chia-chi Yeh // Give device socket a reasonable timeout. 60473f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh timeval tv; 60573f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh tv.tv_sec = 0; 606a7f73fb2550935cc78c643b7faf25ebacf16b94fChia-chi Yeh tv.tv_usec = 1000 * sampleCount / sampleRate * 500; 607d3cd43211e94d0cd1dbb7d0c35b01412eea4b5b8Chia-chi Yeh if (setsockopt(pair[0], SOL_SOCKET, SO_RCVTIMEO, &tv, sizeof(tv))) { 60873f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh LOGE("setsockopt: %s", strerror(errno)); 60973f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh return false; 61073f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh } 61173f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh 61273f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh // Add device stream into event queue. 61373f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh epoll_event event; 61473f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh event.events = EPOLLIN; 61573f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh event.data.ptr = mChain; 61673f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh if (epoll_ctl(mEventQueue, EPOLL_CTL_ADD, pair[1], &event)) { 61773f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh LOGE("epoll_ctl: %s", strerror(errno)); 61873f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh return false; 61973f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh } 62073f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh 62173f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh // Anything else? 62273f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh LOGD("stream[%d] joins group[%d]", pair[1], pair[0]); 62373f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh return true; 62473f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh} 62573f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh 62673f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yehbool AudioGroup::setMode(int mode) 62773f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh{ 62873f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh if (mode < 0 || mode > LAST_MODE) { 62973f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh return false; 63073f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh } 63181b8e1b53a6035d0950309dc24d1500c5acf7f37Eric Laurent //FIXME: temporary code to overcome echo and mic gain issues on herring board. 63281b8e1b53a6035d0950309dc24d1500c5acf7f37Eric Laurent // Must be modified/removed when proper support for voice processing query and control 63381b8e1b53a6035d0950309dc24d1500c5acf7f37Eric Laurent // is included in audio framework 63481b8e1b53a6035d0950309dc24d1500c5acf7f37Eric Laurent char value[PROPERTY_VALUE_MAX]; 63581b8e1b53a6035d0950309dc24d1500c5acf7f37Eric Laurent property_get("ro.product.board", value, ""); 63681b8e1b53a6035d0950309dc24d1500c5acf7f37Eric Laurent if (mode == NORMAL && !strcmp(value, "herring")) { 63781b8e1b53a6035d0950309dc24d1500c5acf7f37Eric Laurent mode = ECHO_SUPPRESSION; 63881b8e1b53a6035d0950309dc24d1500c5acf7f37Eric Laurent } 63973f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh if (mMode == mode) { 64073f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh return true; 64173f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh } 64273f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh 643d3cd43211e94d0cd1dbb7d0c35b01412eea4b5b8Chia-chi Yeh mDeviceThread->requestExitAndWait(); 64473f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh LOGD("group[%d] switches from mode %d to %d", mDeviceSocket, mMode, mode); 64573f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh mMode = mode; 646d3cd43211e94d0cd1dbb7d0c35b01412eea4b5b8Chia-chi Yeh return (mode == ON_HOLD) || mDeviceThread->start(); 64773f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh} 64873f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh 64973f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yehbool AudioGroup::sendDtmf(int event) 65073f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh{ 65173f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh if (event < 0 || event > 15) { 65273f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh return false; 65373f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh } 65473f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh 65573f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh // DTMF is rarely used, so we try to make it as lightweight as possible. 65673f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh // Using volatile might be dodgy, but using a pipe or pthread primitives 65773f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh // or stop-set-restart threads seems too heavy. Will investigate later. 65873f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh timespec ts; 65973f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh ts.tv_sec = 0; 66073f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh ts.tv_nsec = 100000000; 66173f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh for (int i = 0; mDtmfEvent != -1 && i < 20; ++i) { 66273f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh nanosleep(&ts, NULL); 66373f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh } 66473f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh if (mDtmfEvent != -1) { 66573f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh return false; 66673f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh } 66773f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh mDtmfEvent = event; 66873f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh nanosleep(&ts, NULL); 66973f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh return true; 67073f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh} 67173f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh 67273f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yehbool AudioGroup::add(AudioStream *stream) 67373f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh{ 67473f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh mNetworkThread->requestExitAndWait(); 67573f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh 67673f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh epoll_event event; 67773f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh event.events = EPOLLIN; 67873f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh event.data.ptr = stream; 67973f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh if (epoll_ctl(mEventQueue, EPOLL_CTL_ADD, stream->mSocket, &event)) { 68073f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh LOGE("epoll_ctl: %s", strerror(errno)); 68173f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh return false; 68273f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh } 68373f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh 68473f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh stream->mNext = mChain->mNext; 68573f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh mChain->mNext = stream; 68673f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh if (!mNetworkThread->start()) { 68773f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh // Only take over the stream when succeeded. 68873f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh mChain->mNext = stream->mNext; 68973f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh return false; 69073f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh } 69173f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh 69273f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh LOGD("stream[%d] joins group[%d]", stream->mSocket, mDeviceSocket); 69373f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh return true; 69473f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh} 69573f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh 69673f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yehbool AudioGroup::remove(int socket) 69773f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh{ 69873f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh mNetworkThread->requestExitAndWait(); 69973f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh 70073f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh for (AudioStream *stream = mChain; stream->mNext; stream = stream->mNext) { 70173f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh AudioStream *target = stream->mNext; 70273f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh if (target->mSocket == socket) { 70319f94d0256b9d50fe2656dc5c27ee56a24f92247Chia-chi Yeh if (epoll_ctl(mEventQueue, EPOLL_CTL_DEL, socket, NULL)) { 70419f94d0256b9d50fe2656dc5c27ee56a24f92247Chia-chi Yeh LOGE("epoll_ctl: %s", strerror(errno)); 70519f94d0256b9d50fe2656dc5c27ee56a24f92247Chia-chi Yeh return false; 70619f94d0256b9d50fe2656dc5c27ee56a24f92247Chia-chi Yeh } 70773f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh stream->mNext = target->mNext; 70873f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh LOGD("stream[%d] leaves group[%d]", socket, mDeviceSocket); 70973f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh delete target; 71073f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh break; 71173f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh } 71273f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh } 71373f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh 71473f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh // Do not start network thread if there is only one stream. 71573f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh if (!mChain->mNext || !mNetworkThread->start()) { 71673f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh return false; 71773f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh } 71873f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh return true; 71973f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh} 72073f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh 721d3cd43211e94d0cd1dbb7d0c35b01412eea4b5b8Chia-chi Yehbool AudioGroup::NetworkThread::threadLoop() 72273f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh{ 723d3cd43211e94d0cd1dbb7d0c35b01412eea4b5b8Chia-chi Yeh AudioStream *chain = mGroup->mChain; 72473f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh int tick = elapsedRealtime(); 72573f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh int deadline = tick + 10; 72673f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh int count = 0; 72773f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh 728d3cd43211e94d0cd1dbb7d0c35b01412eea4b5b8Chia-chi Yeh for (AudioStream *stream = chain; stream; stream = stream->mNext) { 729b727dc4e022dd5a64301dffc527db92e023bf156Chia-chi Yeh if (tick - stream->mTick >= 0) { 730d3cd43211e94d0cd1dbb7d0c35b01412eea4b5b8Chia-chi Yeh stream->encode(tick, chain); 73173f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh } 73273f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh if (deadline - stream->mTick > 0) { 73373f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh deadline = stream->mTick; 73473f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh } 73573f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh ++count; 73673f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh } 73773f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh 738d3cd43211e94d0cd1dbb7d0c35b01412eea4b5b8Chia-chi Yeh int event = mGroup->mDtmfEvent; 739d3cd43211e94d0cd1dbb7d0c35b01412eea4b5b8Chia-chi Yeh if (event != -1) { 740d3cd43211e94d0cd1dbb7d0c35b01412eea4b5b8Chia-chi Yeh for (AudioStream *stream = chain; stream; stream = stream->mNext) { 74173f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh stream->sendDtmf(event); 74273f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh } 743d3cd43211e94d0cd1dbb7d0c35b01412eea4b5b8Chia-chi Yeh mGroup->mDtmfEvent = -1; 74473f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh } 74573f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh 74673f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh deadline -= tick; 74773f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh if (deadline < 1) { 74873f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh deadline = 1; 74973f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh } 75073f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh 75173f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh epoll_event events[count]; 752d3cd43211e94d0cd1dbb7d0c35b01412eea4b5b8Chia-chi Yeh count = epoll_wait(mGroup->mEventQueue, events, count, deadline); 75373f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh if (count == -1) { 75473f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh LOGE("epoll_wait: %s", strerror(errno)); 75573f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh return false; 75673f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh } 75773f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh for (int i = 0; i < count; ++i) { 75873f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh ((AudioStream *)events[i].data.ptr)->decode(tick); 75973f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh } 76073f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh 76173f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh return true; 76273f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh} 76373f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh 764ff0c3ac9f0e9aa22c0d4cc2b1ca051e1974287eaEric Laurentbool AudioGroup::checkPlatformAec() 765ff0c3ac9f0e9aa22c0d4cc2b1ca051e1974287eaEric Laurent{ 766ff0c3ac9f0e9aa22c0d4cc2b1ca051e1974287eaEric Laurent effect_descriptor_t fxDesc; 767ff0c3ac9f0e9aa22c0d4cc2b1ca051e1974287eaEric Laurent uint32_t numFx; 768ff0c3ac9f0e9aa22c0d4cc2b1ca051e1974287eaEric Laurent 769ff0c3ac9f0e9aa22c0d4cc2b1ca051e1974287eaEric Laurent if (AudioEffect::queryNumberEffects(&numFx) != NO_ERROR) { 770ff0c3ac9f0e9aa22c0d4cc2b1ca051e1974287eaEric Laurent return false; 771ff0c3ac9f0e9aa22c0d4cc2b1ca051e1974287eaEric Laurent } 772ff0c3ac9f0e9aa22c0d4cc2b1ca051e1974287eaEric Laurent for (uint32_t i = 0; i < numFx; i++) { 773ff0c3ac9f0e9aa22c0d4cc2b1ca051e1974287eaEric Laurent if (AudioEffect::queryEffect(i, &fxDesc) != NO_ERROR) { 774ff0c3ac9f0e9aa22c0d4cc2b1ca051e1974287eaEric Laurent continue; 775ff0c3ac9f0e9aa22c0d4cc2b1ca051e1974287eaEric Laurent } 776ff0c3ac9f0e9aa22c0d4cc2b1ca051e1974287eaEric Laurent if (memcmp(&fxDesc.type, FX_IID_AEC, sizeof(effect_uuid_t)) == 0) { 777ff0c3ac9f0e9aa22c0d4cc2b1ca051e1974287eaEric Laurent return true; 778ff0c3ac9f0e9aa22c0d4cc2b1ca051e1974287eaEric Laurent } 779ff0c3ac9f0e9aa22c0d4cc2b1ca051e1974287eaEric Laurent } 780ff0c3ac9f0e9aa22c0d4cc2b1ca051e1974287eaEric Laurent return false; 781ff0c3ac9f0e9aa22c0d4cc2b1ca051e1974287eaEric Laurent} 782ff0c3ac9f0e9aa22c0d4cc2b1ca051e1974287eaEric Laurent 783d3cd43211e94d0cd1dbb7d0c35b01412eea4b5b8Chia-chi Yehbool AudioGroup::DeviceThread::threadLoop() 78473f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh{ 785d3cd43211e94d0cd1dbb7d0c35b01412eea4b5b8Chia-chi Yeh int mode = mGroup->mMode; 786d3cd43211e94d0cd1dbb7d0c35b01412eea4b5b8Chia-chi Yeh int sampleRate = mGroup->mSampleRate; 787d3cd43211e94d0cd1dbb7d0c35b01412eea4b5b8Chia-chi Yeh int sampleCount = mGroup->mSampleCount; 788d3cd43211e94d0cd1dbb7d0c35b01412eea4b5b8Chia-chi Yeh int deviceSocket = mGroup->mDeviceSocket; 78973f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh 790d3cd43211e94d0cd1dbb7d0c35b01412eea4b5b8Chia-chi Yeh // Find out the frame count for AudioTrack and AudioRecord. 791d3cd43211e94d0cd1dbb7d0c35b01412eea4b5b8Chia-chi Yeh int output = 0; 792d3cd43211e94d0cd1dbb7d0c35b01412eea4b5b8Chia-chi Yeh int input = 0; 79331a824ddf74276c6f571079fe6afbb71c13bf965Dima Zavin if (AudioTrack::getMinFrameCount(&output, AUDIO_STREAM_VOICE_CALL, 794d3cd43211e94d0cd1dbb7d0c35b01412eea4b5b8Chia-chi Yeh sampleRate) != NO_ERROR || output <= 0 || 795d3cd43211e94d0cd1dbb7d0c35b01412eea4b5b8Chia-chi Yeh AudioRecord::getMinFrameCount(&input, sampleRate, 79631a824ddf74276c6f571079fe6afbb71c13bf965Dima Zavin AUDIO_FORMAT_PCM_16_BIT, 1) != NO_ERROR || input <= 0) { 797d3cd43211e94d0cd1dbb7d0c35b01412eea4b5b8Chia-chi Yeh LOGE("cannot compute frame count"); 798d3cd43211e94d0cd1dbb7d0c35b01412eea4b5b8Chia-chi Yeh return false; 79973f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh } 800d3cd43211e94d0cd1dbb7d0c35b01412eea4b5b8Chia-chi Yeh LOGD("reported frame count: output %d, input %d", output, input); 80173f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh 802d3cd43211e94d0cd1dbb7d0c35b01412eea4b5b8Chia-chi Yeh if (output < sampleCount * 2) { 803d3cd43211e94d0cd1dbb7d0c35b01412eea4b5b8Chia-chi Yeh output = sampleCount * 2; 804d3cd43211e94d0cd1dbb7d0c35b01412eea4b5b8Chia-chi Yeh } 805d3cd43211e94d0cd1dbb7d0c35b01412eea4b5b8Chia-chi Yeh if (input < sampleCount * 2) { 806d3cd43211e94d0cd1dbb7d0c35b01412eea4b5b8Chia-chi Yeh input = sampleCount * 2; 807d3cd43211e94d0cd1dbb7d0c35b01412eea4b5b8Chia-chi Yeh } 808d3cd43211e94d0cd1dbb7d0c35b01412eea4b5b8Chia-chi Yeh LOGD("adjusted frame count: output %d, input %d", output, input); 80973f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh 810d3cd43211e94d0cd1dbb7d0c35b01412eea4b5b8Chia-chi Yeh // Initialize AudioTrack and AudioRecord. 811d3cd43211e94d0cd1dbb7d0c35b01412eea4b5b8Chia-chi Yeh AudioTrack track; 812d3cd43211e94d0cd1dbb7d0c35b01412eea4b5b8Chia-chi Yeh AudioRecord record; 81331a824ddf74276c6f571079fe6afbb71c13bf965Dima Zavin if (track.set(AUDIO_STREAM_VOICE_CALL, sampleRate, AUDIO_FORMAT_PCM_16_BIT, 81431a824ddf74276c6f571079fe6afbb71c13bf965Dima Zavin AUDIO_CHANNEL_OUT_MONO, output) != NO_ERROR || record.set( 81531a824ddf74276c6f571079fe6afbb71c13bf965Dima Zavin AUDIO_SOURCE_VOICE_COMMUNICATION, sampleRate, AUDIO_FORMAT_PCM_16_BIT, 81631a824ddf74276c6f571079fe6afbb71c13bf965Dima Zavin AUDIO_CHANNEL_IN_MONO, input) != NO_ERROR) { 817d3cd43211e94d0cd1dbb7d0c35b01412eea4b5b8Chia-chi Yeh LOGE("cannot initialize audio device"); 818d3cd43211e94d0cd1dbb7d0c35b01412eea4b5b8Chia-chi Yeh return false; 819d3cd43211e94d0cd1dbb7d0c35b01412eea4b5b8Chia-chi Yeh } 820d3cd43211e94d0cd1dbb7d0c35b01412eea4b5b8Chia-chi Yeh LOGD("latency: output %d, input %d", track.latency(), record.latency()); 82173f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh 822d3cd43211e94d0cd1dbb7d0c35b01412eea4b5b8Chia-chi Yeh // Give device socket a reasonable buffer size. 823d3cd43211e94d0cd1dbb7d0c35b01412eea4b5b8Chia-chi Yeh setsockopt(deviceSocket, SOL_SOCKET, SO_RCVBUF, &output, sizeof(output)); 824d3cd43211e94d0cd1dbb7d0c35b01412eea4b5b8Chia-chi Yeh setsockopt(deviceSocket, SOL_SOCKET, SO_SNDBUF, &output, sizeof(output)); 825d3cd43211e94d0cd1dbb7d0c35b01412eea4b5b8Chia-chi Yeh 826d3cd43211e94d0cd1dbb7d0c35b01412eea4b5b8Chia-chi Yeh // Drain device socket. 827d3cd43211e94d0cd1dbb7d0c35b01412eea4b5b8Chia-chi Yeh char c; 828d3cd43211e94d0cd1dbb7d0c35b01412eea4b5b8Chia-chi Yeh while (recv(deviceSocket, &c, 1, MSG_DONTWAIT) == 1); 829d3cd43211e94d0cd1dbb7d0c35b01412eea4b5b8Chia-chi Yeh 830ff0c3ac9f0e9aa22c0d4cc2b1ca051e1974287eaEric Laurent // check if platform supports echo cancellation and do not active local echo suppression in 831ff0c3ac9f0e9aa22c0d4cc2b1ca051e1974287eaEric Laurent // this case 832ff0c3ac9f0e9aa22c0d4cc2b1ca051e1974287eaEric Laurent EchoSuppressor *echo = NULL; 833ff0c3ac9f0e9aa22c0d4cc2b1ca051e1974287eaEric Laurent AudioEffect *aec = NULL; 834ff0c3ac9f0e9aa22c0d4cc2b1ca051e1974287eaEric Laurent if (mode == ECHO_SUPPRESSION) { 835ff0c3ac9f0e9aa22c0d4cc2b1ca051e1974287eaEric Laurent if (mGroup->platformHasAec()) { 836ff0c3ac9f0e9aa22c0d4cc2b1ca051e1974287eaEric Laurent aec = new AudioEffect(FX_IID_AEC, 837ff0c3ac9f0e9aa22c0d4cc2b1ca051e1974287eaEric Laurent NULL, 838ff0c3ac9f0e9aa22c0d4cc2b1ca051e1974287eaEric Laurent 0, 839ff0c3ac9f0e9aa22c0d4cc2b1ca051e1974287eaEric Laurent 0, 840ff0c3ac9f0e9aa22c0d4cc2b1ca051e1974287eaEric Laurent 0, 841ff0c3ac9f0e9aa22c0d4cc2b1ca051e1974287eaEric Laurent record.getSessionId(), 842ff0c3ac9f0e9aa22c0d4cc2b1ca051e1974287eaEric Laurent record.getInput()); 843ff0c3ac9f0e9aa22c0d4cc2b1ca051e1974287eaEric Laurent status_t status = aec->initCheck(); 844ff0c3ac9f0e9aa22c0d4cc2b1ca051e1974287eaEric Laurent if (status == NO_ERROR || status == ALREADY_EXISTS) { 845ff0c3ac9f0e9aa22c0d4cc2b1ca051e1974287eaEric Laurent aec->setEnabled(true); 846ff0c3ac9f0e9aa22c0d4cc2b1ca051e1974287eaEric Laurent } else { 847ff0c3ac9f0e9aa22c0d4cc2b1ca051e1974287eaEric Laurent delete aec; 848ff0c3ac9f0e9aa22c0d4cc2b1ca051e1974287eaEric Laurent aec = NULL; 849ff0c3ac9f0e9aa22c0d4cc2b1ca051e1974287eaEric Laurent } 850ff0c3ac9f0e9aa22c0d4cc2b1ca051e1974287eaEric Laurent } 851ff0c3ac9f0e9aa22c0d4cc2b1ca051e1974287eaEric Laurent // Create local echo suppressor if platform AEC cannot be used. 852ff0c3ac9f0e9aa22c0d4cc2b1ca051e1974287eaEric Laurent if (aec == NULL) { 853ff0c3ac9f0e9aa22c0d4cc2b1ca051e1974287eaEric Laurent echo = new EchoSuppressor(sampleCount, 854ff0c3ac9f0e9aa22c0d4cc2b1ca051e1974287eaEric Laurent (track.latency() + record.latency()) * sampleRate / 1000); 855ff0c3ac9f0e9aa22c0d4cc2b1ca051e1974287eaEric Laurent } 856ff0c3ac9f0e9aa22c0d4cc2b1ca051e1974287eaEric Laurent } 8570ec517b89eef54d900ed1c49c2611707d2406d3bChia-chi Yeh // Start AudioRecord before AudioTrack. This prevents AudioTrack from being 8580ec517b89eef54d900ed1c49c2611707d2406d3bChia-chi Yeh // disabled due to buffer underrun while waiting for AudioRecord. 859d3cd43211e94d0cd1dbb7d0c35b01412eea4b5b8Chia-chi Yeh if (mode != MUTED) { 860d3cd43211e94d0cd1dbb7d0c35b01412eea4b5b8Chia-chi Yeh record.start(); 8610ec517b89eef54d900ed1c49c2611707d2406d3bChia-chi Yeh int16_t one; 8620ec517b89eef54d900ed1c49c2611707d2406d3bChia-chi Yeh record.read(&one, sizeof(one)); 863d3cd43211e94d0cd1dbb7d0c35b01412eea4b5b8Chia-chi Yeh } 8640ec517b89eef54d900ed1c49c2611707d2406d3bChia-chi Yeh track.start(); 865d3cd43211e94d0cd1dbb7d0c35b01412eea4b5b8Chia-chi Yeh 866d3cd43211e94d0cd1dbb7d0c35b01412eea4b5b8Chia-chi Yeh while (!exitPending()) { 867d3cd43211e94d0cd1dbb7d0c35b01412eea4b5b8Chia-chi Yeh int16_t output[sampleCount]; 868d3cd43211e94d0cd1dbb7d0c35b01412eea4b5b8Chia-chi Yeh if (recv(deviceSocket, output, sizeof(output), 0) <= 0) { 869d3cd43211e94d0cd1dbb7d0c35b01412eea4b5b8Chia-chi Yeh memset(output, 0, sizeof(output)); 8707dab0dc564087a4b8f90621cdfc8d730288fb201Chia-chi Yeh } 8717dab0dc564087a4b8f90621cdfc8d730288fb201Chia-chi Yeh 872d3cd43211e94d0cd1dbb7d0c35b01412eea4b5b8Chia-chi Yeh int16_t input[sampleCount]; 873d3cd43211e94d0cd1dbb7d0c35b01412eea4b5b8Chia-chi Yeh int toWrite = sampleCount; 874d3cd43211e94d0cd1dbb7d0c35b01412eea4b5b8Chia-chi Yeh int toRead = (mode == MUTED) ? 0 : sampleCount; 875d3cd43211e94d0cd1dbb7d0c35b01412eea4b5b8Chia-chi Yeh int chances = 100; 876d3cd43211e94d0cd1dbb7d0c35b01412eea4b5b8Chia-chi Yeh 877d3cd43211e94d0cd1dbb7d0c35b01412eea4b5b8Chia-chi Yeh while (--chances > 0 && (toWrite > 0 || toRead > 0)) { 878d3cd43211e94d0cd1dbb7d0c35b01412eea4b5b8Chia-chi Yeh if (toWrite > 0) { 879d3cd43211e94d0cd1dbb7d0c35b01412eea4b5b8Chia-chi Yeh AudioTrack::Buffer buffer; 880d3cd43211e94d0cd1dbb7d0c35b01412eea4b5b8Chia-chi Yeh buffer.frameCount = toWrite; 881d3cd43211e94d0cd1dbb7d0c35b01412eea4b5b8Chia-chi Yeh 882d3cd43211e94d0cd1dbb7d0c35b01412eea4b5b8Chia-chi Yeh status_t status = track.obtainBuffer(&buffer, 1); 883d3cd43211e94d0cd1dbb7d0c35b01412eea4b5b8Chia-chi Yeh if (status == NO_ERROR) { 884d3cd43211e94d0cd1dbb7d0c35b01412eea4b5b8Chia-chi Yeh int offset = sampleCount - toWrite; 885d3cd43211e94d0cd1dbb7d0c35b01412eea4b5b8Chia-chi Yeh memcpy(buffer.i8, &output[offset], buffer.size); 886d3cd43211e94d0cd1dbb7d0c35b01412eea4b5b8Chia-chi Yeh toWrite -= buffer.frameCount; 887d3cd43211e94d0cd1dbb7d0c35b01412eea4b5b8Chia-chi Yeh track.releaseBuffer(&buffer); 888d3cd43211e94d0cd1dbb7d0c35b01412eea4b5b8Chia-chi Yeh } else if (status != TIMED_OUT && status != WOULD_BLOCK) { 889d3cd43211e94d0cd1dbb7d0c35b01412eea4b5b8Chia-chi Yeh LOGE("cannot write to AudioTrack"); 890ff0c3ac9f0e9aa22c0d4cc2b1ca051e1974287eaEric Laurent goto exit; 891d3cd43211e94d0cd1dbb7d0c35b01412eea4b5b8Chia-chi Yeh } 892d3cd43211e94d0cd1dbb7d0c35b01412eea4b5b8Chia-chi Yeh } 893d3cd43211e94d0cd1dbb7d0c35b01412eea4b5b8Chia-chi Yeh 894d3cd43211e94d0cd1dbb7d0c35b01412eea4b5b8Chia-chi Yeh if (toRead > 0) { 895d3cd43211e94d0cd1dbb7d0c35b01412eea4b5b8Chia-chi Yeh AudioRecord::Buffer buffer; 8960ec517b89eef54d900ed1c49c2611707d2406d3bChia-chi Yeh buffer.frameCount = toRead; 897d3cd43211e94d0cd1dbb7d0c35b01412eea4b5b8Chia-chi Yeh 898d3cd43211e94d0cd1dbb7d0c35b01412eea4b5b8Chia-chi Yeh status_t status = record.obtainBuffer(&buffer, 1); 899d3cd43211e94d0cd1dbb7d0c35b01412eea4b5b8Chia-chi Yeh if (status == NO_ERROR) { 9000ec517b89eef54d900ed1c49c2611707d2406d3bChia-chi Yeh int offset = sampleCount - toRead; 9010ec517b89eef54d900ed1c49c2611707d2406d3bChia-chi Yeh memcpy(&input[offset], buffer.i8, buffer.size); 9020ec517b89eef54d900ed1c49c2611707d2406d3bChia-chi Yeh toRead -= buffer.frameCount; 903d3cd43211e94d0cd1dbb7d0c35b01412eea4b5b8Chia-chi Yeh record.releaseBuffer(&buffer); 904d3cd43211e94d0cd1dbb7d0c35b01412eea4b5b8Chia-chi Yeh } else if (status != TIMED_OUT && status != WOULD_BLOCK) { 905d3cd43211e94d0cd1dbb7d0c35b01412eea4b5b8Chia-chi Yeh LOGE("cannot read from AudioRecord"); 906ff0c3ac9f0e9aa22c0d4cc2b1ca051e1974287eaEric Laurent goto exit; 9077dab0dc564087a4b8f90621cdfc8d730288fb201Chia-chi Yeh } 90873f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh } 90973f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh } 91073f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh 911d3cd43211e94d0cd1dbb7d0c35b01412eea4b5b8Chia-chi Yeh if (chances <= 0) { 9120ec517b89eef54d900ed1c49c2611707d2406d3bChia-chi Yeh LOGW("device loop timeout"); 9130ec517b89eef54d900ed1c49c2611707d2406d3bChia-chi Yeh while (recv(deviceSocket, &c, 1, MSG_DONTWAIT) == 1); 914d3cd43211e94d0cd1dbb7d0c35b01412eea4b5b8Chia-chi Yeh } 91573f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh 916d3cd43211e94d0cd1dbb7d0c35b01412eea4b5b8Chia-chi Yeh if (mode != MUTED) { 917ff0c3ac9f0e9aa22c0d4cc2b1ca051e1974287eaEric Laurent if (echo != NULL) { 918ff0c3ac9f0e9aa22c0d4cc2b1ca051e1974287eaEric Laurent LOGV("echo->run()"); 919ff0c3ac9f0e9aa22c0d4cc2b1ca051e1974287eaEric Laurent echo->run(output, input); 920d3cd43211e94d0cd1dbb7d0c35b01412eea4b5b8Chia-chi Yeh } 921ff0c3ac9f0e9aa22c0d4cc2b1ca051e1974287eaEric Laurent send(deviceSocket, input, sizeof(input), MSG_DONTWAIT); 9227dab0dc564087a4b8f90621cdfc8d730288fb201Chia-chi Yeh } 9237dab0dc564087a4b8f90621cdfc8d730288fb201Chia-chi Yeh } 924ff0c3ac9f0e9aa22c0d4cc2b1ca051e1974287eaEric Laurent 925ff0c3ac9f0e9aa22c0d4cc2b1ca051e1974287eaEric Laurentexit: 926ff0c3ac9f0e9aa22c0d4cc2b1ca051e1974287eaEric Laurent delete echo; 927ff0c3ac9f0e9aa22c0d4cc2b1ca051e1974287eaEric Laurent delete aec; 928ff0c3ac9f0e9aa22c0d4cc2b1ca051e1974287eaEric Laurent return true; 92973f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh} 93073f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh 93173f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh//------------------------------------------------------------------------------ 93273f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh 93373f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yehstatic jfieldID gNative; 93473f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yehstatic jfieldID gMode; 93573f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh 93619f94d0256b9d50fe2656dc5c27ee56a24f92247Chia-chi Yehvoid add(JNIEnv *env, jobject thiz, jint mode, 93773f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh jint socket, jstring jRemoteAddress, jint remotePort, 9380d2c37c274f1db29f51f1d078f240be13b784bf2Chia-chi Yeh jstring jCodecSpec, jint dtmfType) 93973f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh{ 9400d2c37c274f1db29f51f1d078f240be13b784bf2Chia-chi Yeh AudioCodec *codec = NULL; 94173f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh AudioStream *stream = NULL; 94273f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh AudioGroup *group = NULL; 94373f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh 94473f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh // Sanity check. 94573f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh sockaddr_storage remote; 94673f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh if (parse(env, jRemoteAddress, remotePort, &remote) < 0) { 94773f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh // Exception already thrown. 9480d2c37c274f1db29f51f1d078f240be13b784bf2Chia-chi Yeh return; 94973f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh } 9500d2c37c274f1db29f51f1d078f240be13b784bf2Chia-chi Yeh if (!jCodecSpec) { 9510d2c37c274f1db29f51f1d078f240be13b784bf2Chia-chi Yeh jniThrowNullPointerException(env, "codecSpec"); 9520d2c37c274f1db29f51f1d078f240be13b784bf2Chia-chi Yeh return; 95373f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh } 9540d2c37c274f1db29f51f1d078f240be13b784bf2Chia-chi Yeh const char *codecSpec = env->GetStringUTFChars(jCodecSpec, NULL); 9550d2c37c274f1db29f51f1d078f240be13b784bf2Chia-chi Yeh if (!codecSpec) { 95673f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh // Exception already thrown. 9570d2c37c274f1db29f51f1d078f240be13b784bf2Chia-chi Yeh return; 9580d2c37c274f1db29f51f1d078f240be13b784bf2Chia-chi Yeh } 9590d2c37c274f1db29f51f1d078f240be13b784bf2Chia-chi Yeh 9600d2c37c274f1db29f51f1d078f240be13b784bf2Chia-chi Yeh // Create audio codec. 9610d2c37c274f1db29f51f1d078f240be13b784bf2Chia-chi Yeh int codecType = -1; 9620d2c37c274f1db29f51f1d078f240be13b784bf2Chia-chi Yeh char codecName[16]; 9630d2c37c274f1db29f51f1d078f240be13b784bf2Chia-chi Yeh int sampleRate = -1; 9649795c258778208fd96a072b7a91028285aafbc32Chia-chi Yeh sscanf(codecSpec, "%d %15[^/]%*c%d", &codecType, codecName, &sampleRate); 9650d2c37c274f1db29f51f1d078f240be13b784bf2Chia-chi Yeh codec = newAudioCodec(codecName); 9660d2c37c274f1db29f51f1d078f240be13b784bf2Chia-chi Yeh int sampleCount = (codec ? codec->set(sampleRate, codecSpec) : -1); 9670d2c37c274f1db29f51f1d078f240be13b784bf2Chia-chi Yeh env->ReleaseStringUTFChars(jCodecSpec, codecSpec); 9680d2c37c274f1db29f51f1d078f240be13b784bf2Chia-chi Yeh if (sampleCount <= 0) { 9690d2c37c274f1db29f51f1d078f240be13b784bf2Chia-chi Yeh jniThrowException(env, "java/lang/IllegalStateException", 9700d2c37c274f1db29f51f1d078f240be13b784bf2Chia-chi Yeh "cannot initialize audio codec"); 97119f94d0256b9d50fe2656dc5c27ee56a24f92247Chia-chi Yeh goto error; 97273f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh } 97373f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh 97473f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh // Create audio stream. 97573f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh stream = new AudioStream; 9760d2c37c274f1db29f51f1d078f240be13b784bf2Chia-chi Yeh if (!stream->set(mode, socket, &remote, codec, sampleRate, sampleCount, 97773f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh codecType, dtmfType)) { 97873f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh jniThrowException(env, "java/lang/IllegalStateException", 97973f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh "cannot initialize audio stream"); 98073f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh goto error; 98173f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh } 98273f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh socket = -1; 9830d2c37c274f1db29f51f1d078f240be13b784bf2Chia-chi Yeh codec = NULL; 98473f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh 98573f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh // Create audio group. 98673f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh group = (AudioGroup *)env->GetIntField(thiz, gNative); 98773f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh if (!group) { 98873f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh int mode = env->GetIntField(thiz, gMode); 98973f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh group = new AudioGroup; 99073f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh if (!group->set(8000, 256) || !group->setMode(mode)) { 99173f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh jniThrowException(env, "java/lang/IllegalStateException", 99273f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh "cannot initialize audio group"); 99373f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh goto error; 99473f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh } 99573f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh } 99673f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh 99773f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh // Add audio stream into audio group. 99873f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh if (!group->add(stream)) { 99973f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh jniThrowException(env, "java/lang/IllegalStateException", 100073f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh "cannot add audio stream"); 100173f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh goto error; 100273f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh } 100373f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh 100473f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh // Succeed. 100573f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh env->SetIntField(thiz, gNative, (int)group); 100619f94d0256b9d50fe2656dc5c27ee56a24f92247Chia-chi Yeh return; 100773f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh 100873f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeherror: 100973f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh delete group; 101073f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh delete stream; 10110d2c37c274f1db29f51f1d078f240be13b784bf2Chia-chi Yeh delete codec; 101273f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh close(socket); 101373f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh env->SetIntField(thiz, gNative, NULL); 101473f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh} 101573f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh 101673f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yehvoid remove(JNIEnv *env, jobject thiz, jint socket) 101773f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh{ 101873f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh AudioGroup *group = (AudioGroup *)env->GetIntField(thiz, gNative); 101973f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh if (group) { 102073f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh if (socket == -1 || !group->remove(socket)) { 102173f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh delete group; 102273f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh env->SetIntField(thiz, gNative, NULL); 102373f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh } 102473f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh } 102573f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh} 102673f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh 102773f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yehvoid setMode(JNIEnv *env, jobject thiz, jint mode) 102873f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh{ 102973f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh AudioGroup *group = (AudioGroup *)env->GetIntField(thiz, gNative); 103073f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh if (group && !group->setMode(mode)) { 103173f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh jniThrowException(env, "java/lang/IllegalArgumentException", NULL); 103273f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh } 103373f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh} 103473f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh 103573f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yehvoid sendDtmf(JNIEnv *env, jobject thiz, jint event) 103673f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh{ 103773f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh AudioGroup *group = (AudioGroup *)env->GetIntField(thiz, gNative); 103873f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh if (group && !group->sendDtmf(event)) { 103973f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh jniThrowException(env, "java/lang/IllegalArgumentException", NULL); 104073f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh } 104173f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh} 104273f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh 104373f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi YehJNINativeMethod gMethods[] = { 1044a54e36694b3909ef367867eb7516b2d6f6031261Chia-chi Yeh {"nativeAdd", "(IILjava/lang/String;ILjava/lang/String;I)V", (void *)add}, 1045a54e36694b3909ef367867eb7516b2d6f6031261Chia-chi Yeh {"nativeRemove", "(I)V", (void *)remove}, 1046a54e36694b3909ef367867eb7516b2d6f6031261Chia-chi Yeh {"nativeSetMode", "(I)V", (void *)setMode}, 1047a54e36694b3909ef367867eb7516b2d6f6031261Chia-chi Yeh {"nativeSendDtmf", "(I)V", (void *)sendDtmf}, 104873f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh}; 104973f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh 105073f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh} // namespace 105173f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh 105273f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yehint registerAudioGroup(JNIEnv *env) 105373f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh{ 105473f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh gRandom = open("/dev/urandom", O_RDONLY); 105573f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh if (gRandom == -1) { 105673f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh LOGE("urandom: %s", strerror(errno)); 105773f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh return -1; 105873f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh } 105973f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh 106073f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh jclass clazz; 106173f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh if ((clazz = env->FindClass("android/net/rtp/AudioGroup")) == NULL || 106273f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh (gNative = env->GetFieldID(clazz, "mNative", "I")) == NULL || 106373f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh (gMode = env->GetFieldID(clazz, "mMode", "I")) == NULL || 106473f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh env->RegisterNatives(clazz, gMethods, NELEM(gMethods)) < 0) { 106573f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh LOGE("JNI registration failed"); 106673f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh return -1; 106773f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh } 106873f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh return 0; 106973f6df1f0aac12c243e2110e30337ab01aa71598Chia-chi Yeh} 1070