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Core Audio output: Enforce some minimum quality settings

CQTexperiment
Christopher Snowhill 2021-12-28 15:41:31 -08:00
parent ba3746fcff
commit 486352ea72
1 changed files with 7 additions and 0 deletions
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7
Audio/Output/OutputCoreAudio.m
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@ -370,6 +370,13 @@ default_device_changed(AudioObjectID inObjectID, UInt32 inNumberAddresses, const
deviceFormat.mFormatFlags &= ~kLinearPCMFormatFlagIsNonInterleaved;
// deviceFormat.mFormatFlags &= ~kLinearPCMFormatFlagIsFloat;
// deviceFormat.mFormatFlags = kLinearPCMFormatFlagIsSignedInteger;
if (@available(macOS 12.0, *)) {
// Let's enable surround upmixing, for surround and spatial output
deviceFormat.mChannelsPerFrame = 8;
}
// And force a default rate for crappy devices
if (deviceFormat.mSampleRate < 32000)
deviceFormat.mSampleRate = 48000;
deviceFormat.mBytesPerFrame = deviceFormat.mChannelsPerFrame*(deviceFormat.mBitsPerChannel/8);
deviceFormat.mBytesPerPacket = deviceFormat.mBytesPerFrame * deviceFormat.mFramesPerPacket;