New audio code

These changes bring in a bunch of audio fixes, including a new audio
front/back driver model for QEMU 1.4. The following was addressed:
- General quest instability
- Performance issues with capture and playback (there were a lot
  of unneeded world switches due to v4v API)
- Security cleanup (the old code had known buffer overflow attacks
  and handle rewrite attack vulnerabilities)
- Added error validation (the old code had little to no error checks)
- Bugs with amixer patch. The patch was moved to the audio helper removing
  the need to patch ALSA. This was a relatively easy thing to do as the
  audio helper and amixer have to do the same kind of tasks
- Changes to init script (the old init script over-wrote the ALSA state
  on reboot, so settings in the UIVM would roll-back on each reboot)
- Patch queue cleanup
- Recipe cleanup
- SELinux work to support init script

OXT-133: Qemu 1.4 crash during tools install
OXT-220: Qemu 1.4: sometimes the VM volume defaults to 0
OXT-234: amixer patch
OXT-189: Mic mute not working
OXT-196: Audio on Dell Latitude E6540
OXT-195: Audio on HP 2570p
OXT-194: Audio Capture Setting not working

Singed-off-by: Rian Quinn <[email protected]>

audio_helper/configure.in

@@ -13,7 +13,7 @@ dnl
 dnl
 dnl
 AC_PREREQ(2.13)
-AC_INIT(src/audio_helper.c)
+AC_INIT(src/main.c)
 
 AC_PROG_CC
 AC_PROG_CPP
@@ -31,15 +31,13 @@ AUDIO_HELPER_MAJOR_VERSION=`cat $srcdir/version-major`
 AUDIO_HELPER_MINOR_VERSION=`cat $srcdir/version-minor`
 AUDIO_HELPER_MICRO_VERSION=`cat $srcdir/version-micro`
 
-
-AUDIO_HELPER_VERSION=$XBLANKER_MAJOR_VERSION.$XBLANKER_MINOR_VERSION.$XBLANKER_MICRO_VERSION
+AUDIO_HELPER_VERSION=$AUDIO_HELPER_MAJOR_VERSION.$AUDIO_HELPER_MINOR_VERSION.$AUDIO_HELPER_MICRO_VERSION
 
 AC_SUBST(AUDIO_HELPER_MAJOR_VERSION)
 AC_SUBST(AUDIO_HELPER_MINOR_VERSION)
 AC_SUBST(AUDIO_HELPER_MICRO_VERSION)
 AC_SUBST(AUDIO_HELPER_VERSION)
 
-
 VERSION=$AUDIO_HELPER_VERSION
 PACKAGE=audio_helper
 
@@ -91,11 +89,9 @@ CPPFLAGS="${ORIG_CPPFLAGS}"
 
 if test "x$have_libv4v" = "xfalse"; then
         AC_MSG_ERROR([
-*** libv4v is required.                
+*** libv4v is required.
 ])
 fi
 
 AC_OUTPUT([Makefile
 	   src/Makefile])
-
-

audio_helper/src/Makefile.am

@@ -18,40 +18,38 @@
 
 #
 # Copyright (c) 2012 Citrix Systems, Inc.
-# 
+#
 # This program is free software; you can redistribute it and/or modify
 # it under the terms of the GNU General Public License as published by
 # the Free Software Foundation; either version 2 of the License, or
 # (at your option) any later version.
-# 
+#
 # This program is distributed in the hope that it will be useful,
 # but WITHOUT ANY WARRANTY; without even the implied warranty of
 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 # GNU General Public License for more details.
-# 
+#
 # You should have received a copy of the GNU General Public License
 # along with this program; if not, write to the Free Software
 # Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 #
 
-
 CPROTO=cproto
 
 noinst_HEADERS=project.h prototypes.h
 
 bin_PROGRAMS = audio_helper
 
-SRCS=audio_helper.c version.c
+SRCS=main.c version.c openxtalsa.c openxtdebug.c openxtmixerctl.c openxtv4v.c openxtvmaudio.c unittest.c
 audio_helper_SOURCES = ${SRCS}
-audio_helper_LDADD = -lxenstore -lv4v -lrt -lasound -ldl -lm
+audio_helper_LDADD = -lv4v -lasound -lm
 
 AM_CFLAGS=-g
 
-audio_helper_LDFLAGS = 
+audio_helper_LDFLAGS =
 
 BUILT_SOURCES = version.h
 
-
 VFD=${srcdir}/..
 VF=${shell cat ${VFD}/version-files}
 VFS=${VF:%=${VFD}/%}
@@ -64,8 +62,6 @@ protos:
 	${CPROTO} -v ${INCLUDES} ${SRCS} > prototypes.tmp
 	mv -f prototypes.tmp prototypes.h
 
-
-
 version.h: $(VFD)/version-files $(VFD)/version-major \
 	$(VFD)/version-minor $(VFD)/version-micro \
 	$(VFD)/version-md5sums ${VFS} Makefile
@@ -76,4 +72,3 @@ version.h: $(VFD)/version-files $(VFD)/version-major \
 		echo "#define VERSION \"audio_helper Version ${VNUM}\"" > version.h; \
 		echo ${VNUM} > version-num; \
 	fi
-