X-Git-Url: https://git.sesse.net/?a=blobdiff_plain;f=resampling_queue.cpp;h=06dc6fbf417bb1a13aae39f4cbf527e7740e5b6f;hb=ffd68fbfb90242069af957f2a28908f0559f8348;hp=7286d5cba535ebad5b757bc3ed1c2d2399d6d528;hpb=e0dd9e22b11a7e812b9ff708370426c564ac8005;p=nageru

diff --git a/resampling_queue.cpp b/resampling_queue.cpp
index 7286d5c..06dc6fb 100644
--- a/resampling_queue.cpp
+++ b/resampling_queue.cpp
@@ -49,6 +49,8 @@ void ResamplingQueue::add_input_samples(steady_clock::time_point ts, const float
 		return;
 	}
 
+	assert(duration<double>(ts.time_since_epoch()).count() >= 0.0);
+
 	bool good_sample = (rate_adjustment_policy == ADJUST_RATE);
 	if (good_sample && a1.good_sample) {
 		a0 = a1;
@@ -88,6 +90,12 @@ bool ResamplingQueue::get_output_samples(steady_clock::time_point ts, float *sam
 		// good point. Note that we could be extrapolating backward or
 		// forward, depending on the timing of the calls.
 		const InputPoint &base_point = a1.good_sample ? a1 : a0;
+		assert(duration<double>(base_point.ts.time_since_epoch()).count() >= 0.0);
+
+		// NOTE: Due to extrapolation, input_samples_received can
+		// actually go negative here the few first calls (ie., we asked
+		// about a timestamp where we hadn't actually started producing
+		// samples yet), but that is harmless.
 		const double input_samples_received = base_point.input_samples_received +
 			current_estimated_freq_in * duration<double>(ts - base_point.ts).count();
 
@@ -148,8 +156,6 @@ bool ResamplingQueue::get_output_samples(steady_clock::time_point ts, float *sam
 		if (rcorr < 0.95) rcorr = 0.95;
 		assert(!isnan(rcorr));
 		vresampler.set_rratio(rcorr);
-	} else {
-		assert(rate_adjustment_policy == DO_NOT_ADJUST_RATE);
 	}
 
 	// Finally actually resample, producing exactly <num_samples> output samples.