From 378f710cee077e7cabf2bf00fd968db1de8cc0a9 Mon Sep 17 00:00:00 2001
From: Christopher Snowhill <kode54@gmail.com>
Date: Sun, 26 Jun 2022 01:09:55 -0700
Subject: [PATCH] [Visualization] Resample more audio if present

If upsampling the audio by a significant factor, it may be necessary to
process more than one buffer at a time, rather than lose input.

Signed-off-by: Christopher Snowhill <kode54@gmail.com>
---
 Audio/Output/OutputAVFoundation.m | 19 ++++++++++++-------
 1 file changed, 12 insertions(+), 7 deletions(-)

diff --git a/Audio/Output/OutputAVFoundation.m b/Audio/Output/OutputAVFoundation.m
index c43ea55e2..e4d157228 100644
--- a/Audio/Output/OutputAVFoundation.m
+++ b/Audio/Output/OutputAVFoundation.m
@@ -177,14 +177,19 @@ static OSStatus eqRenderCallback(void *inRefCon, AudioUnitRenderActionFlags *ioA
 				[currentPtsLock unlock];
 			}
 			if(r8bvis) {
-				size_t inDone = 0;
 				int samplesProcessed;
-				[currentPtsLock lock];
-				samplesProcessed = (int)r8bstate_resample(r8bvis, &visAudio[0], frameCount, &inDone, &visTemp[0], 8192);
-				[currentPtsLock unlock];
-				if(samplesProcessed) {
-					[visController postVisPCM:&visTemp[0] amount:samplesProcessed];
-				}
+				size_t totalDone = 0;
+				size_t inDone = 0;
+				{
+					[currentPtsLock lock];
+					samplesProcessed = (int)r8bstate_resample(r8bvis, &visAudio[totalDone], frameCount, &inDone, &visTemp[0], 8192);
+					[currentPtsLock unlock];
+					if(samplesProcessed) {
+						[visController postVisPCM:&visTemp[0] amount:samplesProcessed];
+					}
+					totalDone += inDone;
+					frameCount -= inDone;
+				} while(samplesProcessed && frameCount);
 			}
 		} else if(r8bvis) {
 			for(;;) {