[Qemu-devel] [PATCH 11/11] Make mixemu mandatory

[Marc-André Lureau]

Without MIXEMU, volume control on the guest doesn't work (except when
volume is applied by guest "emulation", in Win7 for example).

Instead rely on backend volume support, or fallback on mixeng if
backend doesn't support volume control.
---
 audio/mixeng.c |    6 ------
 configure      |    8 --------
 hw/hda-audio.c |    4 ----
 3 files changed, 0 insertions(+), 18 deletions(-)

diff --git a/audio/mixeng.c b/audio/mixeng.c
index 5446be6..0b060e3 100644
--- a/audio/mixeng.c
+++ b/audio/mixeng.c
@@ -336,7 +336,6 @@ void mixeng_clear (struct st_sample *buf, int len)
 
 void mixeng_volume (struct st_sample *buf, int len, struct mixeng_volume *vol)
 {
-#ifdef CONFIG_MIXEMU
     if (vol->mute) {
         mixeng_clear (buf, len);
         return;
@@ -352,9 +351,4 @@ void mixeng_volume (struct st_sample *buf, int len, struct 
mixeng_volume *vol)
 #endif
         buf += 1;
     }
-#else
-    (void) buf;
-    (void) len;
-    (void) vol;
-#endif
 }
diff --git a/configure b/configure
index 160bf63..09fc408 100755
--- a/configure
+++ b/configure
@@ -177,7 +177,6 @@ darwin_user="no"
 bsd_user="no"
 guest_base=""
 uname_release=""
-mixemu="no"
 aix="no"
 blobs="yes"
 pkgversion=""
@@ -770,8 +769,6 @@ for opt do
   ;;
   --enable-nptl) nptl="yes"
   ;;
-  --enable-mixemu) mixemu="yes"
-  ;;
   --disable-linux-aio) linux_aio="no"
   ;;
   --enable-linux-aio) linux_aio="yes"
@@ -1028,7 +1025,6 @@ echo "  --audio-card-list=LIST   set list of emulated 
audio cards [$audio_card_l
 echo "                           Available cards: $audio_possible_cards"
 echo "  --block-drv-whitelist=L  set block driver whitelist"
 echo "                           (affects only QEMU, not qemu-img)"
-echo "  --enable-mixemu          enable mixer emulation"
 echo "  --disable-xen            disable xen backend driver support"
 echo "  --enable-xen             enable xen backend driver support"
 echo "  --disable-brlapi         disable BrlAPI"
@@ -2885,7 +2881,6 @@ echo "mingw32 support   $mingw32"
 echo "Audio drivers     $audio_drv_list"
 echo "Extra audio cards $audio_card_list"
 echo "Block whitelist   $block_drv_whitelist"
-echo "Mixer emulation   $mixemu"
 echo "VirtFS support    $virtfs"
 echo "VNC support       $vnc"
 if test "$vnc" = "yes" ; then
@@ -3047,9 +3042,6 @@ if test "$audio_win_int" = "yes" ; then
   echo "CONFIG_AUDIO_WIN_INT=y" >> $config_host_mak
 fi
 echo "CONFIG_BDRV_WHITELIST=$block_drv_whitelist" >> $config_host_mak
-if test "$mixemu" = "yes" ; then
-  echo "CONFIG_MIXEMU=y" >> $config_host_mak
-fi
 if test "$vnc" = "yes" ; then
   echo "CONFIG_VNC=y" >> $config_host_mak
 fi
diff --git a/hw/hda-audio.c b/hw/hda-audio.c
index 8995519..75f1402 100644
--- a/hw/hda-audio.c
+++ b/hw/hda-audio.c
@@ -121,15 +121,11 @@ static void hda_codec_parse_fmt(uint32_t format, struct 
audsettings *as)
 #define QEMU_HDA_AMP_NONE    (0)
 #define QEMU_HDA_AMP_STEPS   0x4a
 
-#ifdef CONFIG_MIXEMU
 #define QEMU_HDA_AMP_CAPS                                               \
     (AC_AMPCAP_MUTE |                                                   \
      (QEMU_HDA_AMP_STEPS << AC_AMPCAP_OFFSET_SHIFT)    |                \
      (QEMU_HDA_AMP_STEPS << AC_AMPCAP_NUM_STEPS_SHIFT) |                \
      (3                  << AC_AMPCAP_STEP_SIZE_SHIFT))
-#else
-#define QEMU_HDA_AMP_CAPS    QEMU_HDA_AMP_NONE
-#endif
 
 /* common: audio output widget */
 static const desc_param common_params_audio_dac[] = {
-- 
1.7.7.6