From: Marc-André Lureau <marcandre.lureau@redhat.com>

Commit 42061a14358 ("audio/mixeng: replace redundant pcm_info fields
with AudioFormat") accidentally changed the conv/clip function selection
in audio_pcm_sw_init_ to use hw->info.af (the hardware voice format)
instead of sw->info.af (the software voice format). This causes audio
distortion when the software and hardware voices use different formats,
as the wrong conversion functions are applied to the audio data.

Fix by using sw->info.af, restoring the original behavior.

Fixes: 42061a14358c ("audio/mixeng: replace redundant pcm_info fields with AudioFormat")
Reported-by: Dmitry Osipenko <dmitry.osipenko@collabora.com>
Reviewed-by: Christian Schoenebeck <qemu_oss@crudebyte.com>
Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
---
 audio/audio_template.h | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/audio/audio_template.h b/audio/audio_template.h
index fe769cde667..398a7273739 100644
--- a/audio/audio_template.h
+++ b/audio/audio_template.h
@@ -172,7 +172,7 @@ static int glue (audio_pcm_sw_init_, TYPE) (
     sw->empty = true;
 #endif
 
-    if (audio_format_is_float(hw->info.af)) {
+    if (audio_format_is_float(sw->info.af)) {
 #ifdef DAC
         sw->conv = mixeng_conv_float[sw->info.nchannels == 2]
             [sw->info.swap_endianness];
@@ -187,9 +187,9 @@ static int glue (audio_pcm_sw_init_, TYPE) (
         sw->clip = mixeng_clip
 #endif
             [sw->info.nchannels == 2]
-            [audio_format_is_signed(hw->info.af)]
+            [audio_format_is_signed(sw->info.af)]
             [sw->info.swap_endianness]
-            [audio_format_to_index(hw->info.af)];
+            [audio_format_to_index(sw->info.af)];
     }
 
     sw->name = g_strdup (name);
-- 
2.53.0