From 9b0693d8ef564b16d1cff70588baf86a24d41d82 Mon Sep 17 00:00:00 2001
From: Max Kellermann <max@duempel.org>
Date: Sun, 12 Oct 2008 12:02:54 +0200
Subject: [PATCH] pcm_utils: support any number of channels in
 pcm_sizeOfConvBuffer()

When calculating the conversion buffer size, don't hard-code the
formulas for only mono<->stereo.
---
 src/pcm_utils.c | 13 ++-----------
 1 file changed, 2 insertions(+), 11 deletions(-)

diff --git a/src/pcm_utils.c b/src/pcm_utils.c
index cb6f93f63..200c657de 100644
--- a/src/pcm_utils.c
+++ b/src/pcm_utils.c
@@ -568,17 +568,8 @@ size_t pcm_sizeOfConvBuffer(const struct audio_format *inFormat, size_t inSize,
 	}
 
 	if (inFormat->channels != outFormat->channels) {
-		switch (inFormat->channels) {
-		case 1:
-			outSize = (outSize >> 1) << 2;
-			break;
-		case 2:
-			outSize >>= 1;
-			break;
-		default:
-			FATAL("only 1 or 2 channels are supported "
-			      "for conversion!\n");
-		}
+		outSize /= inFormat->channels;
+		outSize *= outFormat->channels;
 	}
 
 	outSize /= shift;