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update README.md
Introduce opus codec and adopt new default values for chunk duration and sample rate.
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1 changed files with 11 additions and 10 deletions
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@ -8,10 +8,11 @@ The server's audio input is a named pipe `/tmp/snapfifo`. All data that is fed i
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How does is work
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How does is work
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----------------
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----------------
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The snapserver reads PCM chunks of 50ms duration from the pipe `/tmp/snapfifo`. The chunk is encoded and tagged with the local time
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The snapserver reads PCM chunks of 10ms duration from the pipe `/tmp/snapfifo`. The chunk is encoded and tagged with the local time
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* PCM: lossless uncompressed
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* PCM: lossless uncompressed
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* FLAC: lossless compressed [default]
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* FLAC: lossless compressed [default]
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* Vorbis: lossy compression
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* Vorbis: lossy compression
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* Opus: lossy low-latency compression
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The encoded chunk is sent via a TCP connection to the snapclients.
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The encoded chunk is sent via a TCP connection to the snapclients.
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Each client does continuos time synchronization with the server, so that the client is always aware of the local server time.
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Each client does continuos time synchronization with the server, so that the client is always aware of the local server time.
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@ -65,20 +66,20 @@ Disable alsa audio output by commenting out this section:
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# type "alsa"
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# type "alsa"
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# name "My ALSA Device"
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# name "My ALSA Device"
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# device "hw:0,0" # optional
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# device "hw:0,0" # optional
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# format "44100:16:2" # optional
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# format "48000:16:2" # optional
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# mixer_device "default" # optional
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# mixer_device "default" # optional
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# mixer_control "PCM" # optional
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# mixer_control "PCM" # optional
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# mixer_index "0" # optional
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# mixer_index "0" # optional
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#}
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#}
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Add a new audio output of the type "fifo", which will let mpd play audio into the named pipe `/tmp/snapfifo`.
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Add a new audio output of the type "fifo", which will let mpd play audio into the named pipe `/tmp/snapfifo`.
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Make sure that the "format" setting is the same as the format setting of the snapserver (default is "44100:16:2", which should make resampling unnecessary in most cases)
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Make sure that the "format" setting is the same as the format setting of the snapserver (default is "48000:16:2", which should make resampling unnecessary in most cases)
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audio_output {
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audio_output {
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type "fifo"
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type "fifo"
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name "my pipe"
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name "my pipe"
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path "/tmp/snapfifo"
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path "/tmp/snapfifo"
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format "44100:16:2"
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format "48000:16:2"
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mixer_type "software"
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mixer_type "software"
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}
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}
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