From: Takashi Iwai <tiwai@suse.de>
Date: Tue, 24 Aug 2021 08:00:26 +0000 (+0200)
Subject: aplay: Handle upper bound in peak calculations
X-Git-Tag: v1.2.6~21
X-Git-Url: https://git.alsa-project.org/?a=commitdiff_plain;h=2efe124c31360cf0156dd0e5e7cdd52d1346a5c0;p=alsa-utils.git

aplay: Handle upper bound in peak calculations

Make sure that the calculated max_peak[] won't go beyond the sample
max resolution.

Signed-off-by: Takashi Iwai <tiwai@suse.de>
---

diff --git a/aplay/aplay.c b/aplay/aplay.c
index 2543de5..a51a37b 100644
--- a/aplay/aplay.c
+++ b/aplay/aplay.c
@@ -1898,6 +1898,8 @@ static void compute_max_peak(u_char *data, size_t samples)
 		max = 0x7fffffff;
 
 	for (c = 0; c < ichans; c++) {
+		if (max_peak[c] > max)
+			max_peak[c] = max;
 		if (bits_per_sample > 16)
 			perc[c] = max_peak[c] / (max / 100);
 		else