8.3.7 - only AirPlay 2 supported

[Tim Curtis]

For the renderers there is no API (at least as far as I know of) for getting the stream info so it's just hard coded. The exception is Multiroom sender where I know for sure from the TRX source code its 16/48K Opus to PCM. I suppose I could also browse through the renderer sources but I'll leave that for another day.

Code:

//
// INPUT
//

if ($btActive === true && $_SESSION['audioout'] == 'Local') {
    $_file = 'Bluetooth stream';
    $_encoded_at = 'Unknown';
    $_decoded_to = 'PCM 16 bit 44.1 kHz, Stereo';
    $_decode_rate = '';
} else if ($aplActive == '1') {
    $_file = 'AirPlay stream';
    $_encoded_at = 'PCM';
    $_decoded_to = 'PCM 16 bit 44.1 kHz, Stereo';
    $_decode_rate = '';
} else if ($spotActive == '1') {
    $_file = 'Spotify stream';
    $_encoded_at = 'PCM';
    $_decoded_to = 'PCM 16 bit 44.1 kHz, Stereo';
    $_decode_rate = '';
} else if ($slActive == '1') {
    $_file = 'Squeezelite stream';
    $_encoded_at = 'Unknown';
    $_decoded_to = 'Unknown';
    $_decode_rate = '';
} else if ($rbActive == '1') {
    $_file = 'RoonBridge stream';
    $_encoded_at = 'Unknown';
    $_decoded_to = 'Unknown';
    $_decode_rate = '';
} else if ($_SESSION['multiroom_rx'] == 'On') {
    $_file = 'Multiroom sender stream';
    $_encoded_at = 'Opus 16 bit 48 kHz, Stereo';
    $_decoded_to = 'PCM 16 bit 48 kHz, Stereo';
    $_decode_rate = '';
} else {
    $song = getCurrentSong($sock);
    $_file = $song['file'];
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