[Spice-devel] [PATCH] sound: fix pointer arithmetic in snd_record_handle_write()

[Volker Rümelin]

The variable 'now' counts in audio sample frames, but the variable
'data' is of type uint8_t *. Multiply 'now' by the size of an audio
sample frame to get the correct source pointer.

This improves the quality of audio recordings in QEMU a little bit.

Fixes: 5d5a7bd181 ("sound: Avoid cast that could cause alignment problems")
Signed-off-by: Volker Rümelin <vr_qemu at t-online.de>
---
 server/sound.cpp | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/server/sound.cpp b/server/sound.cpp
index eca2706c..4909d158 100644
--- a/server/sound.cpp
+++ b/server/sound.cpp
@@ -302,7 +302,7 @@ static bool snd_record_handle_write(RecordChannelClient *record_client, size_t s
     memcpy(record_client->samples + write_pos, data, now << 2);
 
     if (size) {
-        memcpy(record_client->samples, data + now, size << 2);
+        memcpy(record_client->samples, data + (now << 2), size << 2);
     }
 
     if (record_client->write_pos - record_client->read_pos > RECORD_SAMPLES_SIZE) {
-- 
2.35.3