我正在使用Java將rtp音頻從麥克風傳輸到我的android手機應用程序,但我沒有聽到任何聲音。設置AudioGroup和AudioStream時沒有錯誤,因此我假定一切都正確。這裏是關於應用程序端的代碼:如何接收RTP音頻流Android?
AudioStream audioStream;
AudioGroup audioGroup;
AudioCodec codec = AudioCodec.PCMU;
StrictMode.ThreadPolicy policy = new StrictMode.ThreadPolicy.Builder().permitNetwork().build();
StrictMode.setThreadPolicy(policy);
AudioManager audio = (AudioManager)getSystemService(AUDIO_SERVICE);
audio.setMode(AudioManager.MODE_IN_COMMUNICATION);
audioGroup = new AudioGroup();
audioGroup.setMode(AudioGroup.MODE_NORMAL);
InetAddress inetAddress;
try {
inetAddress = InetAddress.getByName("163.11.62.208");
audioStream = new AudioStream(inetAddress);
audioStream.setMode(RtpStream.MODE_RECEIVE_ONLY);
audioStream.setCodec(codec);
InetAddress inetAddressRemote = InetAddress.getByName("163.11.169.206");
audioStream.associate(inetAddressRemote, 5004);
audioStream.join(audioGroup);
}
我使用的ffmpeg流測試(這在VLC播放器的Android工程)是
ffmpeg -f lavfi -i aevalsrc="sin(400*2*PI*t)" -ar 8000 -vcodec pcm_u8 -f rtp rtp://163.11.62.208:5004
再次..這工作在VLC播放器的Android而不是在我的應用程序沒有錯誤..只是沒有音頻。
好吧我只是注意到在LogCat中我收到消息告訴我它正在工作。這裏有一些日誌。
stream[59] is configured as RAW 8kHz 32ms mode 0
D/AudioGroup﹕ stream[59] joins group[56]
group[56] switches from mode 0 to 1
stream[54] joins group[56]
getOutputSamplingRate() reading from output desc
V/AudioSystem﹕ getSamplingRate() streamType 0, output 2, sampling rate 48000
V/AudioSystem﹕ getFrameCount() streamType 0, output 2, frameCount 960
V/AudioSystem﹕ getLatency() streamType 0, output 2, latency 160
V/AudioTrack﹕ getMinFrameCount=1280: afFrameCount=960, minBufCount=8, afSampleRate=48000, afLatency=160
D/AudioGroup﹕ reported frame count: output 1280, input 320
D/AudioGroup﹕ adjusted frame count: output 1280, input 512
V/AudioTrack﹕ sampleRate 8000, channelMask 0x1, format 1
V/AudioTrack﹕ streamType 0
V/AudioTrack﹕ set() streamType 0, sampleRate 8000, format 1, frameCount 1280, flags 0000
V/AudioSystem﹕ getLatency() streamType 0, output 2, latency 160
V/AudioSystem﹕ getFrameCount() streamType 0, output 2, frameCount 960
V/AudioSystem﹕ getOutputSamplingRate() reading from output desc
V/AudioSystem﹕ getSamplingRate() streamType 0, output 2, sampling rate 48000
V/AudioTrack﹕ createTrack_l() output 2 afLatency 160
V/AudioTrack﹕ afFrameCount=960, minBufCount=8, afSampleRate=48000, afLatency=160
V/AudioTrack﹕ minFrameCount: 1280, afFrameCount=960, minBufCount=8, sampleRate=8000, afSampleRate=48000, afLatency=160
V/AudioRecord﹕ sampleRate 8000, channelMask 0x10, format 1
V/AudioRecord﹕ inputSource 7
V/AudioRecord﹕ set(): sampleRate 8000, channelMask 0x10, frameCount 512
D/AudioRecord﹕ set(): voiceActivationState 0
D/AudioRecord﹕ Keep input Source type.
V/AudioRecord﹕ AudioRecord::set() minFrameCount = 320
V/AudioRecord﹕ set(): mSessionId 1827
V/AudioSystem﹕ ioConfigChanged() event 3, ioHandle 1828
但是:我也只是注意到,我運行我的應用程序時根本沒有系統音量。當我改變系統音量時,它通常會顯示一個指示器噪音,以顯示這是多麼大聲/安靜,但我什麼也聽不到。我不確定這是爲什麼。
不要求嚴格模式關閉網絡。它在現代設備上根本無法工作,並且可能導致問題。如果您需要聯網,請使用線程或AsyncTask。 –
好吧,我已經改變了,但我似乎還沒有得到任何音量。我也將代碼移入一個單獨的線程。 –
凹凸。在這裏有同樣的問題...如果我嘗試從MODE_RECEIVE_ONLY從MODE_SEND_ONLY'setMode',我得到'IllegalStateException:busy' :( –