Hello Glenn,
I tried to use Exoplayer in passthrough mode for E-AC3 format.
And updated my audio_policy_configuration.xml.
But not get error in playback.
Source:
+ <mixPort name="mixport_bus8_out_direct" role="source"
+ flags="AUDIO_OUTPUT_FLAG_DIRECT">
+ <profile name="" format="AUDIO_FORMAT_E_AC3"
+ samplingRates="48000"
+ channelMasks="AUDIO_CHANNEL_OUT_5POINT1"/>
+ </mixPort>
Sink:
+ <devicePort tagName="bus8_out_direct" role="sink" type="AUDIO_DEVICE_OUT_BUS"
+ address="bus8_out_direct">
+ <profile name="" format="AUDIO_FORMAT_E_AC3"
+ samplingRates="48000" channelMasks="AUDIO_CHANNEL_OUT_5POINT1"/>
+ <gains>
+ <gain name="" mode="AUDIO_GAIN_MODE_JOINT"
+ minValueMB="-3200" maxValueMB="600" defaultValueMB="0" stepValueMB="100"/>
+ </gains>
+ </devicePort>
Route:
<route type="mix" sink="bus8_out_direct" sources="mixport_bus8_out_direct"/>
Logs:
12-11 18:26:10.462 6721 6721 D SimpleExoPlayer: SimpleExoPlayer builder.renderersFactory.createRenderers
12-11 18:26:10.467 6721 6721 D DefaultRenderersFactory: buildAudioSink
12-11 18:26:10.468 6721 6721 D AudioCapabilities: AudioCapabilities: supportedEncodings:
12-11 18:26:10.469 6721 6721 D AudioCapabilities: getCapabilities
12-11 18:26:10.469 6721 6721 D DefaultRenderersFactory: AudioCapabilities.getCapabilities(context): AudioCapabilities[maxChannelCount=8, supportedEncodings=[2, 5, 6]]
12-11 18:26:10.481 6721 6721 D DefaultRenderersFactory: createRenderers
12-11 18:26:10.482 6721 6721 D DefaultRenderersFactory: createRenderers audioSink not null
12-11 18:26:10.482 6721 6721 D DefaultRenderersFactory: buildAudioRenderers
…
…
12-11 18:26:10.663 6721 6757 D AudioTrack: supportedEncoding : true
12-11 18:26:10.671 6721 6757 D AudioTrack: In audioCapabilities.supportsEncoding(encoding)
12-11 18:26:10.672 6721 6757 D MediaCodecAudioRenderer: onOutputFormatChanged
12-11 18:26:10.672 6721 6757 D AudioTrack: (inputFormat.sampleMimeType: audio/eac3
12-11 18:26:10.673 6721 6757 D AudioTrack: outputMode = OUTPUT_MODE_PASSTHROUGH;
12-11 18:26:10.673 6721 6757 D AudioTrack: supportedEncoding : true
12-11 18:26:10.673 6721 6757 D AudioTrack: In audioCapabilities.supportsEncoding(encoding)
12-11 18:26:10.681 2346 3051 W APM_AudioPolicyManager: getOutputForDevice() could not find output for stream 3, sampling rate 48000, format 0xa000000, channels 0x3f, flags 0x1
12-11 18:26:10.681 2346 3051 E AudioFlinger: createTrack() getOutputForAttr() return error -38 or invalid output handle
12-11 18:26:10.682 6721 6757 E IAudioFlinger: createTrack returned error -38
12-11 18:26:10.682 6721 6757 E AudioTrack: AudioFlinger could not create track, status: -38 output -565504656
12-11 18:26:10.683 6721 6757 E AudioTrack-JNI: Error -38 initializing AudioTrack
12-11 18:26:10.683 6721 6757 D AudioTrack: no metrics gathered, track status=-38
12-11 18:26:10.683 6721 6757 E android.media.AudioTrack: Error code -20 when initializing AudioTrack.
On Monday, November 9, 2020 at 8:04:18 AM UTC-8 VP wrote:
thanks Glenn for suggestion. I am checking these options.
On Thursday, November 5, 2020 at 8:30:33 AM UTC-8 Glenn Kasten wrote:
Direct mode might do what you need. Here are some starting points to read.
On Thursday, November 5, 2020 at 7:52:47 AM UTC-8, vinay pal wrote:
Hello,Please advise on following for my one of audio implementation
My system:
1. I have an android app to start streaming audio content from a url running (or local audio file) on DEVICE A.
2. The content uses specific codec and there is another connected device (DEVICE B) that has decoder/ Renderer and will feed to Amplifier/speakers.
3. The Android device A will send audio stream through Audio HAL implementations.
Question:
1. How can I bypass Android audio decoder or Is there a way to configure Android to not decode the audio stream but send un-decoded stream to audio HAL?
2. What area I need to modify to pass the un-decoded stream, Audio HAL?
Any link and suggestions will be highly appreciated.
Thanks,
Vinay
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