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Stefan Huber 930654a3af resampler: Generate normalized rows in calc_map_table() 
Remixing one channel map to another is (except for special cases) done
via a linear mapping between channels, whose corresponding matrix is
computed by calc_map_table(). The k-th row in this matrix corresponds to
the coefficients of the linear combination of the input channels that
result in the k-th output channel. In order to avoid clipping of samples
we require that the sum of these coefficients is (at most) 1. This
commit ensures this.

Prior to this commit tests/remix-test.c gives 52 of 132 matrices that
violate this property. For example:
'front-left,front-right,front-center,lfe' -> 'front-left,front-right'
           prior this commit                  after this commit
         I00   I01   I02   I03              I00   I01   I02   I03
      +------------------------          +------------------------
  O00 | 0.750 0.000 0.375 0.375      O00 | 0.533 0.000 0.267 0.200
  O01 | 0.000 0.750 0.375 0.375      O01 | 0.000 0.533 0.267 0.200

Building the matrix is done in several steps. However, only insufficient
measures are taken in order to preserve a row-sum of 1.0 (or leaves it
at 0.0) after each step. The current patch adds a post-processing step
in order check for each row whether the sum exceeds 1.0 and, if
necessary, normalizes this row. This allows for further simplifactions:
 - The insufficient normalizations after some steps are removed. Gains
   are adapted to (partially) resemble the old matrices.
 - Handling unconnected input channls becomes a lot simpler.
2013-02-07 16:45:13 +02:00
doc doc: Add an example stream-restore fallback table file. 2011-10-01 13:25:16 +01:00
doxygen doc: Generate API documentation for ext-device-manager and ext-device-restore. 2012-12-19 12:31:50 +02:00
m4 build-sys: Check for necessary programs in bootstrap.sh 2011-07-28 10:51:09 +01:00
man pactl: Add a command for setting the default sink/source. 2013-02-01 07:16:20 +02:00
po i18n: Update Polish translation 2013-01-18 09:50:00 +02:00
shell-completion bash-completion: Don't complete devices in the list commands 2013-02-01 07:11:15 +02:00
src resampler: Generate normalized rows in calc_map_table() 2013-02-07 16:45:13 +02:00
vala vala: Add has_type_id=false to all enums, structs and classes 2011-08-31 11:35:35 +05:30
.gitignore .gitignore: Add pulse-daemon.log. 2013-01-29 17:32:10 +02:00
.mailmap add a .mailmap file for git shortlog 2009-02-04 22:41:45 +01:00
autogen.sh remove remaining $ 2008-06-18 22:38:32 +02:00
bootstrap.sh build-sys: Check for necessary programs in bootstrap.sh 2011-07-28 10:51:09 +01:00
configure.ac build-sys: Fix an outdated D-Bus version in an error message. 2013-01-24 11:05:37 +02:00
git-version-gen git-version-gen: Honor GIT_DESCRIBE_FOR_BUILD environment variable 2012-09-27 15:22:10 +03:00
GPL * rename "LICENSE" to "LGPL" 2006-04-20 12:33:00 +00:00
LGPL * rename "LICENSE" to "LGPL" 2006-04-20 12:33:00 +00:00
libpulse-mainloop-glib.pc.in build: Fix static linking 2012-07-17 11:05:34 +05:30
libpulse-simple.pc.in build: Fix static linking 2012-07-17 11:05:34 +05:30
libpulse.pc.in build: Fix static linking 2012-07-17 11:05:34 +05:30
LICENSE Update LICENSE 2011-11-27 14:54:01 +00:00
Makefile.am build-sys: Add check-daemon target to the top-level Makefile.am. 2013-02-06 14:14:46 +02:00
orc.mak build: Simplify Orc-related make rules 2011-02-01 11:51:46 +05:30
PROTOCOL introspect: Add functions to handle the latency offset. 2012-06-30 14:41:08 +03:00
pulseaudio-text.svg merge 'lennart' branch back into trunk. 2007-10-28 19:13:50 +00:00
pulseaudio.svg Add PulseAudio logo to tree. 2006-08-28 06:25:41 +00:00
PulseAudioConfig.cmake.in build-sys: Provide a simple CMake Config setup (similar to pkgconfig) 2011-10-19 23:49:23 +01:00
PulseAudioConfigVersion.cmake.in build-sys: Provide a simple CMake Config setup (similar to pkgconfig) 2011-10-19 23:49:23 +01:00
README doc: Add entry for correct spelling 2012-04-27 13:13:23 +05:30
todo Update todo 2011-06-24 00:35:26 +01:00

README 

PULSEAUDIO SOUND SERVER

WEB SITE:
	http://pulseaudio.org/

GIT:
	git://anongit.freedesktop.org/pulseaudio/pulseaudio

GITWEB/CGIT:
	http://cgit.freedesktop.org/pulseaudio/pulseaudio/

MAILING LIST:
	http://lists.freedesktop.org/mailman/listinfo/pulseaudio-discuss

GIT COMMITS MAILING LIST:
	http://lists.freedesktop.org/mailman/listinfo/pulseaudio-commits

TRAC/BUGZILLA TICKET CHANGES MAILING LIST:
	http://lists.freedesktop.org/mailman/listinfo/pulseaudio-bugs

IRC:
	#pulseaudio on irc.freenode.org

CIA:
	http://cia.navi.cx/stats/project/polypaudio

FRESHMEAT:
	http://freshmeat.net/projects/pulseaudio/

OHLOH:
	http://www.ohloh.net/projects/4038

AUTHORS:
	Several

HACKING:
	In order to run pulseaudio from the build dir __OPTIMIZE__ should be
	disabled (look at src/pulsecore/core-util.h::pa_run_from_build_tree()),
	this can be done by passing "CFLAGS=-O0" to the configure script:
	  ./autogen.sh
	  CFLAGS="-ggdb3 -O0" LDFLAGS="-ggdb3" ./configure
	  make
	  ./src/pulseaudio -n -F src/default.pa -p $(pwd)/src/.libs/

SPELLING:
        PulseAudio