output/alsa: check GetFrames()>0 instead of IsEmpty() in WriteFromPeriodBuffer()

cf631fca · Max Kellermann · f0ac63d5 · cf631fca
Commit cf631fca authored Jun 27, 2019 by Max Kellermann
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AlsaOutputPlugin.cxx src/output/plugins/AlsaOutputPlugin.cxx +1 -1

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--- a/src/output/plugins/AlsaOutputPlugin.cxx
+++ b/src/output/plugins/AlsaOutputPlugin.cxx
@@ -311,8 +311,8 @@ private:
 	}

 	snd_pcm_sframes_t WriteFromPeriodBuffer() noexcept {
-		assert(!period_buffer.IsEmpty());
 		assert(period_buffer.IsFull());
+		assert(period_buffer.GetFrames(out_frame_size) > 0);

 		auto frames_written = snd_pcm_writei(pcm, period_buffer.GetHead(),
 						     period_buffer.GetFrames(out_frame_size));