[ioquake3] 03/25: reset samplefrac to 8-bits, to prevent overflow

[Simon McVittie]

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smcv pushed a commit to branch debian/master
in repository ioquake3.

commit 2ef641b969677193b62930df76e5795a176d9463
Author: fmwviormv <fmwviormv at users.noreply.github.com>
Date:   Fri Oct 7 01:21:15 2016 +0330

    reset samplefrac to 8-bits, to prevent overflow
    
    issue: https://github.com/ioquake/ioq3/issues/106
---
 code/client/snd_mem.c | 8 ++++++--
 1 file changed, 6 insertions(+), 2 deletions(-)

diff --git a/code/client/snd_mem.c b/code/client/snd_mem.c
index 655ae42..0ef3bd6 100644
--- a/code/client/snd_mem.c
+++ b/code/client/snd_mem.c
@@ -126,13 +126,15 @@ static int ResampleSfx( sfx_t *sfx, int channels, int inrate, int inwidth, int s
 
 	outcount = samples / stepscale;
 
+	srcsample = 0;
 	samplefrac = 0;
 	fracstep = stepscale * 256 * channels;
 	chunk = sfx->soundData;
 
 	for (i=0 ; i<outcount ; i++)
 	{
-		srcsample = samplefrac >> 8;
+		srcsample += samplefrac >> 8;
+		samplefrac &= 255;
 		samplefrac += fracstep;
 		for (j=0 ; j<channels ; j++)
 		{
@@ -178,12 +180,14 @@ static int ResampleSfxRaw( short *sfx, int channels, int inrate, int inwidth, in
 
 	outcount = samples / stepscale;
 
+	srcsample = 0;
 	samplefrac = 0;
 	fracstep = stepscale * 256 * channels;
 
 	for (i=0 ; i<outcount ; i++)
 	{
-		srcsample = samplefrac >> 8;
+		srcsample += samplefrac >> 8;
+		samplefrac &= 255;
 		samplefrac += fracstep;
 		for (j=0 ; j<channels ; j++)
 		{

-- 
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