add new gain_analysis convenience library
This commit is contained in:
parent
ca8660193b
commit
ddadef6f97
30
FLAC.dsw
30
FLAC.dsw
@ -27,6 +27,9 @@ Package=<4>
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Project_Dep_Name flac_ren
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End Project Dependency
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Begin Project Dependency
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Project_Dep_Name gain_analysis
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End Project Dependency
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Begin Project Dependency
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Project_Dep_Name getopt
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End Project Dependency
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Begin Project Dependency
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@ -71,6 +74,9 @@ Package=<5>
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Package=<4>
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{{{
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Begin Project Dependency
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Project_Dep_Name gain_analysis
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End Project Dependency
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Begin Project Dependency
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Project_Dep_Name getopt
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End Project Dependency
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@ -111,6 +117,18 @@ Package=<4>
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###############################################################################
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Project: "gain_analysis"=.\src\share\gain_analysis\gain_analysis.dsp - Package Owner=<4>
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Package=<5>
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{{{
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}}}
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Package=<4>
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{{{
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}}}
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###############################################################################
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Project: "getopt"=.\src\share\getopt\getopt.dsp - Package Owner=<4>
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Package=<5>
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@ -209,6 +227,18 @@ Package=<5>
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Package=<4>
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{{{
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Begin Project Dependency
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Project_Dep_Name gain_analysis
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End Project Dependency
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Begin Project Dependency
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Project_Dep_Name getopt
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End Project Dependency
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Begin Project Dependency
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Project_Dep_Name libFLAC
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End Project Dependency
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Begin Project Dependency
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Project_Dep_Name utf8
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End Project Dependency
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}}}
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###############################################################################
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@ -58,6 +58,7 @@ libOggFLAC++: libFLAC
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(cd src/$@ ; $(MAKE) -f Makefile.lite $(CONFIG))
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share:
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(cd src/$@/gain_analysis ; $(MAKE) -f Makefile.lite $(CONFIG))
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(cd src/$@/getopt ; $(MAKE) -f Makefile.lite $(CONFIG))
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(cd src/$@/utf8 ; $(MAKE) -f Makefile.lite $(CONFIG))
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@ -97,6 +98,7 @@ clean:
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-(cd src/libFLAC++ ; $(MAKE) -f Makefile.lite clean)
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-(cd src/libOggFLAC ; $(MAKE) -f Makefile.lite clean)
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-(cd src/libOggFLAC++ ; $(MAKE) -f Makefile.lite clean)
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-(cd src/share/gain_analysis ; $(MAKE) -f Makefile.lite clean)
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-(cd src/share/getopt ; $(MAKE) -f Makefile.lite clean)
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-(cd src/share/utf8 ; $(MAKE) -f Makefile.lite clean)
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-(cd src/flac ; $(MAKE) -f Makefile.lite clean)
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@ -2,4 +2,7 @@
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AUTOMAKE_OPTIONS = foreign
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EXTRA_DIST = utf8.h getopt.h
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EXTRA_DIST = \
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gain_analysis.h \
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getopt.h \
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utf8.h
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@ -24,16 +24,16 @@ topdir = ../..
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PROGRAM_NAME = flac
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ifeq ($(DARWIN_BUILD),yes)
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INCLUDES = -I./include -I$(topdir)/include
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LIBS = -lFLAC -lgetopt -lutf8 -lc -lm
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LIBS = -lFLAC -lgain_analysis -lgetopt -lutf8 -lc -lm
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else
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#@@@ TODO: conditionalize ogg includes, defines, and -logg
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ifeq ($(SOLARIS_BUILD),yes)
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INCLUDES = -I./include -I$(topdir)/include -I$(HOME)/local/include -DFLAC__HAS_OGG
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LIBS = -lOggFLAC -lFLAC -lgetopt -lutf8 -lm -L$(HOME)/local/lib -logg
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LIBS = -lOggFLAC -lFLAC -lgain_analysis -lgetopt -lutf8 -lm -L$(HOME)/local/lib -logg
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else
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#@@@ TODO: conditionalize ogg includes, defines, and -logg
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INCLUDES = -I./include -I$(topdir)/include -I$(HOME)/local/include -DFLAC__HAS_OGG
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LIBS = -lOggFLAC -lFLAC -lgetopt -lutf8 -lm -L$(HOME)/local/lib -logg
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LIBS = -lOggFLAC -lFLAC -lgain_analysis -lgetopt -lutf8 -lm -L$(HOME)/local/lib -logg
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endif
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endif
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@ -40,7 +40,7 @@ OBJS= $(C_FILES:.c=.obj)
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all: flac.exe
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flac.exe: $(OBJS)
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link.exe /libpath:"..\..\obj\lib" -out:../../obj/bin/$*.exe $(OBJS) libOggFLAC.lib libFLAC.lib ogg_static.lib getopt.lib utf8.lib
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link.exe /libpath:"..\..\obj\lib" -out:../../obj/bin/$*.exe $(OBJS) libOggFLAC.lib libFLAC.lib ogg_static.lib gain_analysis.lib getopt.lib utf8.lib
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clean:
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-del *.obj *.pch
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@ -23,7 +23,7 @@ topdir = ../..
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PROGRAM_NAME = metaflac
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INCLUDES = -I./include -I$(topdir)/include
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LIBS = -lFLAC -lgetopt -lutf8 -lm
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LIBS = -lFLAC -lgain_analysis -lgetopt -lutf8 -lm
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OBJS = \
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main.o
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@ -33,7 +33,7 @@ OBJS= $(C_FILES:.c=.obj)
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all: metaflac.exe
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metaflac.exe: $(OBJS)
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link.exe /libpath:"..\..\obj\lib" -out:../../obj/bin/$*.exe $(OBJS) libFLAC.lib getopt.lib utf8.lib
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link.exe /libpath:"..\..\obj\lib" -out:../../obj/bin/$*.exe $(OBJS) libFLAC.lib gain_analysis.lib getopt.lib utf8.lib
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clean:
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-del *.obj *.pch
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@ -15,7 +15,7 @@
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# along with this program; if not, write to the Free Software
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# Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
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SUBDIRS = getopt utf8
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SUBDIRS = gain_analysis getopt utf8
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EXTRA_DIST = \
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Makefile.vc \
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@ -3,6 +3,9 @@
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# It's less hassle to spell it all out that to figure out how to do it right with nmake:
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all:
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cd gain_analysis
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nmake /f Makefile.vc
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cd ..
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cd getopt
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nmake /f Makefile.vc
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cd ..
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@ -11,6 +14,9 @@ all:
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cd ..
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clean:
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cd gain_analysis
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nmake /f Makefile.vc clean
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cd ..
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cd getopt
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nmake /f Makefile.vc clean
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cd ..
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20
src/share/gain_analysis/Makefile.am
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src/share/gain_analysis/Makefile.am
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@ -0,0 +1,20 @@
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## Process this file with automake to produce Makefile.in
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AUTOMAKE_OPTIONS = foreign
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INCLUDES = -I$(top_srcdir)/include/share
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noinst_LIBRARIES = libgain_analysis.a
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libgain_analysis_a_SOURCES = gain_analysis.c
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EXTRA_DIST = \
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Makefile.lite \
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Makefile.vc \
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gain_analysis.dsp
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debug:
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$(MAKE) all CFLAGS="@DEBUG@"
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profile:
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$(MAKE) all CFLAGS="@PROFILE@"
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15
src/share/gain_analysis/Makefile.lite
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15
src/share/gain_analysis/Makefile.lite
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@ -0,0 +1,15 @@
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#
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# GNU makefile
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#
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topdir = ../../..
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LIB_NAME = libgain_analysis
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INCLUDES = -I$(topdir)/include/share
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OBJS = \
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gain_analysis.o
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include $(topdir)/build/lib.mk
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# DO NOT DELETE THIS LINE -- make depend depends on it.
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src/share/gain_analysis/Makefile.vc
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src/share/gain_analysis/Makefile.vc
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@ -0,0 +1,23 @@
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!include <win32.mak>
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!IFDEF DEBUG
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.c.obj:
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$(cc) /D "_LIB" -DFLAC__NO_DLL /GX $(cdebug) $(cflags) /I "..\..\..\include" /I "..\..\..\include\share" -DSTRICT -YX /Od /D "_DEBUG" $<
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!else
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.c.obj:
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$(cc) /D "_LIB" -DFLAC__NO_DLL /O2 $(crelease) $(cflags) /I "..\..\..\include" /I "..\..\..\include\share" -DSTRICT -YX -DNODEBUG $<
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!endif
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C_FILES= \
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gain_analysis.c \
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OBJS= $(C_FILES:.c=.obj)
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all: gain_analysis.lib
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gain_analysis.lib: $(OBJS)
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link.exe -lib /nodefaultlib -out:../../../obj/lib/$*.lib $(OBJS)
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clean:
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-del *.obj *.pch
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-del ..\..\..\obj\lib\gain_analysis.lib ..\..\..\obj\lib\gain_analysis.pdb
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src/share/gain_analysis/gain_analysis.c
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413
src/share/gain_analysis/gain_analysis.c
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@ -0,0 +1,413 @@
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/*
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* ReplayGainAnalysis - analyzes input samples and give the recommended dB change
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* Copyright (C) 2001 David Robinson and Glen Sawyer
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*
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* concept and filter values by David Robinson (David@Robinson.org)
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* -- blame him if you think the idea is flawed
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* original coding by Glen Sawyer (glensawyer@hotmail.com)
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* -- blame him if you think this runs too slowly, or the coding is otherwise flawed
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*
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* lots of code improvements by Frank Klemm ( http://www.uni-jena.de/~pfk/mpp/ )
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* -- credit him for all the _good_ programming ;)
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*
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* minor cosmetic tweaks to integrate with FLAC by Josh Coalson
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*
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*
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* For an explanation of the concepts and the basic algorithms involved, go to:
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* http://www.replaygain.org/
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*/
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/*
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* Here's the deal. Call
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*
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* InitGainAnalysis ( long samplefreq );
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*
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* to initialize everything. Call
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*
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* AnalyzeSamples ( const Float_t* left_samples,
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* const Float_t* right_samples,
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* size_t num_samples,
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* int num_channels );
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*
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* as many times as you want, with as many or as few samples as you want.
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* If mono, pass the sample buffer in through left_samples, leave
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* right_samples NULL, and make sure num_channels = 1.
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*
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* GetTitleGain()
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*
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* will return the recommended dB level change for all samples analyzed
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* SINCE THE LAST TIME you called GetTitleGain() OR InitGainAnalysis().
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*
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* GetAlbumGain()
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*
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* will return the recommended dB level change for all samples analyzed
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* since InitGainAnalysis() was called and finalized with GetTitleGain().
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*
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* Pseudo-code to process an album:
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*
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* Float_t l_samples [4096];
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* Float_t r_samples [4096];
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* size_t num_samples;
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* unsigned int num_songs;
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* unsigned int i;
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*
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* InitGainAnalysis ( 44100 );
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* for ( i = 1; i <= num_songs; i++ ) {
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* while ( ( num_samples = getSongSamples ( song[i], left_samples, right_samples ) ) > 0 )
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* AnalyzeSamples ( left_samples, right_samples, num_samples, 2 );
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* fprintf ("Recommended dB change for song %2d: %+6.2f dB\n", i, GetTitleGain() );
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* }
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* fprintf ("Recommended dB change for whole album: %+6.2f dB\n", GetAlbumGain() );
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*/
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/*
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* So here's the main source of potential code confusion:
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*
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* The filters applied to the incoming samples are IIR filters,
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* meaning they rely on up to <filter order> number of previous samples
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* AND up to <filter order> number of previous filtered samples.
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*
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* I set up the AnalyzeSamples routine to minimize memory usage and interface
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* complexity. The speed isn't compromised too much (I don't think), but the
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* internal complexity is higher than it should be for such a relatively
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* simple routine.
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*
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* Optimization/clarity suggestions are welcome.
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*/
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <math.h>
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#include "gain_analysis.h"
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typedef unsigned short Uint16_t;
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typedef signed short Int16_t;
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typedef unsigned int Uint32_t;
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typedef signed int Int32_t;
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#define YULE_ORDER 10
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#define BUTTER_ORDER 2
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#define RMS_PERCENTILE 0.95 /* percentile which is louder than the proposed level */
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#define MAX_SAMP_FREQ 48000. /* maximum allowed sample frequency [Hz] */
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#define RMS_WINDOW_TIME 0.050 /* Time slice size [s] */
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#define STEPS_per_dB 100. /* Table entries per dB */
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#define MAX_dB 120. /* Table entries for 0...MAX_dB (normal max. values are 70...80 dB) */
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#define MAX_ORDER (BUTTER_ORDER > YULE_ORDER ? BUTTER_ORDER : YULE_ORDER)
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#define MAX_SAMPLES_PER_WINDOW (size_t) (MAX_SAMP_FREQ * RMS_WINDOW_TIME) /* max. Samples per Time slice */
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#define PINK_REF 64.82 /* 298640883795 */ /* calibration value */
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Float_t linprebuf [MAX_ORDER * 2];
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Float_t* linpre; /* left input samples, with pre-buffer */
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Float_t lstepbuf [MAX_SAMPLES_PER_WINDOW + MAX_ORDER];
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Float_t* lstep; /* left "first step" (i.e. post first filter) samples */
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Float_t loutbuf [MAX_SAMPLES_PER_WINDOW + MAX_ORDER];
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Float_t* lout; /* left "out" (i.e. post second filter) samples */
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Float_t rinprebuf [MAX_ORDER * 2];
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Float_t* rinpre; /* right input samples ... */
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Float_t rstepbuf [MAX_SAMPLES_PER_WINDOW + MAX_ORDER];
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Float_t* rstep;
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Float_t routbuf [MAX_SAMPLES_PER_WINDOW + MAX_ORDER];
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Float_t* rout;
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unsigned int sampleWindow; /* number of samples required to reach number of milliseconds required for RMS window */
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unsigned long totsamp;
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double lsum;
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double rsum;
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int freqindex;
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int first;
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static Uint32_t A [(size_t)(STEPS_per_dB * MAX_dB)];
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static Uint32_t B [(size_t)(STEPS_per_dB * MAX_dB)];
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/* for each filter:
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[0] 48 kHz, [1] 44.1 kHz, [2] 32 kHz, [3] 24 kHz, [4] 22050 Hz, [5] 16 kHz, [6] 12 kHz, [7] is 11025 Hz, [8] 8 kHz */
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#ifdef WIN32
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#pragma warning ( disable : 4305 )
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#endif
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const Float_t AYule [9] [11] = {
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{ 1., -3.84664617118067, 7.81501653005538,-11.34170355132042, 13.05504219327545,-12.28759895145294, 9.48293806319790, -5.87257861775999, 2.75465861874613, -0.86984376593551, 0.13919314567432 },
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{ 1., -3.47845948550071, 6.36317777566148, -8.54751527471874, 9.47693607801280, -8.81498681370155, 6.85401540936998, -4.39470996079559, 2.19611684890774, -0.75104302451432, 0.13149317958808 },
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{ 1., -2.37898834973084, 2.84868151156327, -2.64577170229825, 2.23697657451713, -1.67148153367602, 1.00595954808547, -0.45953458054983, 0.16378164858596, -0.05032077717131, 0.02347897407020 },
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{ 1., -1.61273165137247, 1.07977492259970, -0.25656257754070, -0.16276719120440, -0.22638893773906, 0.39120800788284, -0.22138138954925, 0.04500235387352, 0.02005851806501, 0.00302439095741 },
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{ 1., -1.49858979367799, 0.87350271418188, 0.12205022308084, -0.80774944671438, 0.47854794562326, -0.12453458140019, -0.04067510197014, 0.08333755284107, -0.04237348025746, 0.02977207319925 },
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{ 1., -0.62820619233671, 0.29661783706366, -0.37256372942400, 0.00213767857124, -0.42029820170918, 0.22199650564824, 0.00613424350682, 0.06747620744683, 0.05784820375801, 0.03222754072173 },
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{ 1., -1.04800335126349, 0.29156311971249, -0.26806001042947, 0.00819999645858, 0.45054734505008, -0.33032403314006, 0.06739368333110, -0.04784254229033, 0.01639907836189, 0.01807364323573 },
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{ 1., -0.51035327095184, -0.31863563325245, -0.20256413484477, 0.14728154134330, 0.38952639978999, -0.23313271880868, -0.05246019024463, -0.02505961724053, 0.02442357316099, 0.01818801111503 },
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{ 1., -0.25049871956020, -0.43193942311114, -0.03424681017675, -0.04678328784242, 0.26408300200955, 0.15113130533216, -0.17556493366449, -0.18823009262115, 0.05477720428674, 0.04704409688120 }
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};
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const Float_t BYule [9] [11] = {
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{ 0.03857599435200, -0.02160367184185, -0.00123395316851, -0.00009291677959, -0.01655260341619, 0.02161526843274, -0.02074045215285, 0.00594298065125, 0.00306428023191, 0.00012025322027, 0.00288463683916 },
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{ 0.05418656406430, -0.02911007808948, -0.00848709379851, -0.00851165645469, -0.00834990904936, 0.02245293253339, -0.02596338512915, 0.01624864962975, -0.00240879051584, 0.00674613682247, -0.00187763777362 },
|
||||
{ 0.15457299681924, -0.09331049056315, -0.06247880153653, 0.02163541888798, -0.05588393329856, 0.04781476674921, 0.00222312597743, 0.03174092540049, -0.01390589421898, 0.00651420667831, -0.00881362733839 },
|
||||
{ 0.30296907319327, -0.22613988682123, -0.08587323730772, 0.03282930172664, -0.00915702933434, -0.02364141202522, -0.00584456039913, 0.06276101321749, -0.00000828086748, 0.00205861885564, -0.02950134983287 },
|
||||
{ 0.33642304856132, -0.25572241425570, -0.11828570177555, 0.11921148675203, -0.07834489609479, -0.00469977914380, -0.00589500224440, 0.05724228140351, 0.00832043980773, -0.01635381384540, -0.01760176568150 },
|
||||
{ 0.44915256608450, -0.14351757464547, -0.22784394429749, -0.01419140100551, 0.04078262797139, -0.12398163381748, 0.04097565135648, 0.10478503600251, -0.01863887810927, -0.03193428438915, 0.00541907748707 },
|
||||
{ 0.56619470757641, -0.75464456939302, 0.16242137742230, 0.16744243493672, -0.18901604199609, 0.30931782841830, -0.27562961986224, 0.00647310677246, 0.08647503780351, -0.03788984554840, -0.00588215443421 },
|
||||
{ 0.58100494960553, -0.53174909058578, -0.14289799034253, 0.17520704835522, 0.02377945217615, 0.15558449135573, -0.25344790059353, 0.01628462406333, 0.06920467763959, -0.03721611395801, -0.00749618797172 },
|
||||
{ 0.53648789255105, -0.42163034350696, -0.00275953611929, 0.04267842219415, -0.10214864179676, 0.14590772289388, -0.02459864859345, -0.11202315195388, -0.04060034127000, 0.04788665548180, -0.02217936801134 }
|
||||
};
|
||||
|
||||
const Float_t AButter [9] [3] = {
|
||||
{ 1., -1.97223372919527, 0.97261396931306 },
|
||||
{ 1., -1.96977855582618, 0.97022847566350 },
|
||||
{ 1., -1.95835380975398, 0.95920349965459 },
|
||||
{ 1., -1.95002759149878, 0.95124613669835 },
|
||||
{ 1., -1.94561023566527, 0.94705070426118 },
|
||||
{ 1., -1.92783286977036, 0.93034775234268 },
|
||||
{ 1., -1.91858953033784, 0.92177618768381 },
|
||||
{ 1., -1.91542108074780, 0.91885558323625 },
|
||||
{ 1., -1.88903307939452, 0.89487434461664 }
|
||||
};
|
||||
|
||||
const Float_t BButter [9] [3] = {
|
||||
{ 0.98621192462708, -1.97242384925416, 0.98621192462708 },
|
||||
{ 0.98500175787242, -1.97000351574484, 0.98500175787242 },
|
||||
{ 0.97938932735214, -1.95877865470428, 0.97938932735214 },
|
||||
{ 0.97531843204928, -1.95063686409857, 0.97531843204928 },
|
||||
{ 0.97316523498161, -1.94633046996323, 0.97316523498161 },
|
||||
{ 0.96454515552826, -1.92909031105652, 0.96454515552826 },
|
||||
{ 0.96009142950541, -1.92018285901082, 0.96009142950541 },
|
||||
{ 0.95856916599601, -1.91713833199203, 0.95856916599601 },
|
||||
{ 0.94597685600279, -1.89195371200558, 0.94597685600279 }
|
||||
};
|
||||
|
||||
#ifdef WIN32
|
||||
#pragma warning ( default : 4305 )
|
||||
#endif
|
||||
|
||||
/* When calling this procedure, make sure that ip[-order] and op[-order] point to real data! */
|
||||
|
||||
static void
|
||||
filter ( const Float_t* input, Float_t* output, size_t nSamples, const Float_t* a, const Float_t* b, size_t order )
|
||||
{
|
||||
double y;
|
||||
size_t i;
|
||||
size_t k;
|
||||
|
||||
for ( i = 0; i < nSamples; i++ ) {
|
||||
y = input[i] * b[0];
|
||||
for ( k = 1; k <= order; k++ )
|
||||
y += input[i-k] * b[k] - output[i-k] * a[k];
|
||||
output[i] = (Float_t)y;
|
||||
}
|
||||
}
|
||||
|
||||
/* returns a INIT_GAIN_ANALYSIS_OK if successful, INIT_GAIN_ANALYSIS_ERROR if not */
|
||||
|
||||
GAIN_ANALYSIS_API
|
||||
int
|
||||
ResetSampleFrequency ( long samplefreq ) {
|
||||
int i;
|
||||
|
||||
/* zero out initial values */
|
||||
for ( i = 0; i < MAX_ORDER; i++ )
|
||||
linprebuf[i] = lstepbuf[i] = loutbuf[i] = rinprebuf[i] = rstepbuf[i] = routbuf[i] = 0.;
|
||||
|
||||
switch ( (int)(samplefreq) ) {
|
||||
case 48000: freqindex = 0; break;
|
||||
case 44100: freqindex = 1; break;
|
||||
case 32000: freqindex = 2; break;
|
||||
case 24000: freqindex = 3; break;
|
||||
case 22050: freqindex = 4; break;
|
||||
case 16000: freqindex = 5; break;
|
||||
case 12000: freqindex = 6; break;
|
||||
case 11025: freqindex = 7; break;
|
||||
case 8000: freqindex = 8; break;
|
||||
default: return INIT_GAIN_ANALYSIS_ERROR;
|
||||
}
|
||||
|
||||
sampleWindow = (int) ceil (samplefreq * RMS_WINDOW_TIME);
|
||||
|
||||
lsum = 0.;
|
||||
rsum = 0.;
|
||||
totsamp = 0;
|
||||
|
||||
memset ( A, 0, sizeof(A) );
|
||||
|
||||
return INIT_GAIN_ANALYSIS_OK;
|
||||
}
|
||||
|
||||
GAIN_ANALYSIS_API
|
||||
int
|
||||
InitGainAnalysis ( long samplefreq )
|
||||
{
|
||||
if (ResetSampleFrequency(samplefreq) != INIT_GAIN_ANALYSIS_OK) {
|
||||
return INIT_GAIN_ANALYSIS_ERROR;
|
||||
}
|
||||
|
||||
linpre = linprebuf + MAX_ORDER;
|
||||
rinpre = rinprebuf + MAX_ORDER;
|
||||
lstep = lstepbuf + MAX_ORDER;
|
||||
rstep = rstepbuf + MAX_ORDER;
|
||||
lout = loutbuf + MAX_ORDER;
|
||||
rout = routbuf + MAX_ORDER;
|
||||
|
||||
memset ( B, 0, sizeof(B) );
|
||||
|
||||
return INIT_GAIN_ANALYSIS_OK;
|
||||
}
|
||||
|
||||
/* returns GAIN_ANALYSIS_OK if successful, GAIN_ANALYSIS_ERROR if not */
|
||||
|
||||
GAIN_ANALYSIS_API
|
||||
int
|
||||
AnalyzeSamples ( const Float_t* left_samples, const Float_t* right_samples, size_t num_samples, int num_channels )
|
||||
{
|
||||
const Float_t* curleft;
|
||||
const Float_t* curright;
|
||||
long batchsamples;
|
||||
long cursamples;
|
||||
long cursamplepos;
|
||||
int i;
|
||||
|
||||
if ( num_samples == 0 )
|
||||
return GAIN_ANALYSIS_OK;
|
||||
|
||||
cursamplepos = 0;
|
||||
batchsamples = num_samples;
|
||||
|
||||
switch ( num_channels) {
|
||||
case 1: right_samples = left_samples;
|
||||
case 2: break;
|
||||
default: return GAIN_ANALYSIS_ERROR;
|
||||
}
|
||||
|
||||
if ( num_samples < MAX_ORDER ) {
|
||||
memcpy ( linprebuf + MAX_ORDER, left_samples , num_samples * sizeof(Float_t) );
|
||||
memcpy ( rinprebuf + MAX_ORDER, right_samples, num_samples * sizeof(Float_t) );
|
||||
}
|
||||
else {
|
||||
memcpy ( linprebuf + MAX_ORDER, left_samples, MAX_ORDER * sizeof(Float_t) );
|
||||
memcpy ( rinprebuf + MAX_ORDER, right_samples, MAX_ORDER * sizeof(Float_t) );
|
||||
}
|
||||
|
||||
while ( batchsamples > 0 ) {
|
||||
cursamples = batchsamples > (long)(sampleWindow-totsamp) ? (long)(sampleWindow - totsamp) : batchsamples;
|
||||
if ( cursamplepos < MAX_ORDER ) {
|
||||
curleft = linpre+cursamplepos;
|
||||
curright = rinpre+cursamplepos;
|
||||
if (cursamples > MAX_ORDER - cursamplepos )
|
||||
cursamples = MAX_ORDER - cursamplepos;
|
||||
}
|
||||
else {
|
||||
curleft = left_samples + cursamplepos;
|
||||
curright = right_samples + cursamplepos;
|
||||
}
|
||||
|
||||
filter ( curleft , lstep + totsamp, cursamples, AYule[freqindex], BYule[freqindex], YULE_ORDER );
|
||||
filter ( curright, rstep + totsamp, cursamples, AYule[freqindex], BYule[freqindex], YULE_ORDER );
|
||||
|
||||
filter ( lstep + totsamp, lout + totsamp, cursamples, AButter[freqindex], BButter[freqindex], BUTTER_ORDER );
|
||||
filter ( rstep + totsamp, rout + totsamp, cursamples, AButter[freqindex], BButter[freqindex], BUTTER_ORDER );
|
||||
|
||||
for ( i = 0; i < cursamples; i++ ) { /* Get the squared values */
|
||||
lsum += lout [totsamp+i] * lout [totsamp+i];
|
||||
rsum += rout [totsamp+i] * rout [totsamp+i];
|
||||
}
|
||||
|
||||
batchsamples -= cursamples;
|
||||
cursamplepos += cursamples;
|
||||
totsamp += cursamples;
|
||||
if ( totsamp == sampleWindow ) { /* Get the Root Mean Square (RMS) for this set of samples */
|
||||
double val = STEPS_per_dB * 10. * log10 ( (lsum+rsum) / totsamp * 0.5 + 1.e-37 );
|
||||
int ival = (int) val;
|
||||
if ( ival < 0 ) ival = 0;
|
||||
if ( ival >= (int)(sizeof(A)/sizeof(*A)) ) ival = (int)(sizeof(A)/sizeof(*A)) - 1;
|
||||
A [ival]++;
|
||||
lsum = rsum = 0.;
|
||||
memmove ( loutbuf , loutbuf + totsamp, MAX_ORDER * sizeof(Float_t) );
|
||||
memmove ( routbuf , routbuf + totsamp, MAX_ORDER * sizeof(Float_t) );
|
||||
memmove ( lstepbuf, lstepbuf + totsamp, MAX_ORDER * sizeof(Float_t) );
|
||||
memmove ( rstepbuf, rstepbuf + totsamp, MAX_ORDER * sizeof(Float_t) );
|
||||
totsamp = 0;
|
||||
}
|
||||
if ( totsamp > sampleWindow ) /* somehow I really screwed up: Error in programming! Contact author about totsamp > sampleWindow */
|
||||
return GAIN_ANALYSIS_ERROR;
|
||||
}
|
||||
if ( num_samples < MAX_ORDER ) {
|
||||
memmove ( linprebuf, linprebuf + num_samples, (MAX_ORDER-num_samples) * sizeof(Float_t) );
|
||||
memmove ( rinprebuf, rinprebuf + num_samples, (MAX_ORDER-num_samples) * sizeof(Float_t) );
|
||||
memcpy ( linprebuf + MAX_ORDER - num_samples, left_samples, num_samples * sizeof(Float_t) );
|
||||
memcpy ( rinprebuf + MAX_ORDER - num_samples, right_samples, num_samples * sizeof(Float_t) );
|
||||
}
|
||||
else {
|
||||
memcpy ( linprebuf, left_samples + num_samples - MAX_ORDER, MAX_ORDER * sizeof(Float_t) );
|
||||
memcpy ( rinprebuf, right_samples + num_samples - MAX_ORDER, MAX_ORDER * sizeof(Float_t) );
|
||||
}
|
||||
|
||||
return GAIN_ANALYSIS_OK;
|
||||
}
|
||||
|
||||
|
||||
static Float_t
|
||||
analyzeResult ( Uint32_t* Array, size_t len )
|
||||
{
|
||||
Uint32_t elems;
|
||||
Int32_t upper;
|
||||
size_t i;
|
||||
|
||||
elems = 0;
|
||||
for ( i = 0; i < len; i++ )
|
||||
elems += Array[i];
|
||||
if ( elems == 0 )
|
||||
return GAIN_NOT_ENOUGH_SAMPLES;
|
||||
|
||||
upper = (Int32_t) ceil (elems * (1. - RMS_PERCENTILE));
|
||||
for ( i = len; i-- > 0; ) {
|
||||
if ( (upper -= Array[i]) <= 0 )
|
||||
break;
|
||||
}
|
||||
|
||||
return (Float_t) ((Float_t)PINK_REF - (Float_t)i / (Float_t)STEPS_per_dB);
|
||||
}
|
||||
|
||||
|
||||
GAIN_ANALYSIS_API
|
||||
Float_t
|
||||
GetTitleGain ( void )
|
||||
{
|
||||
Float_t retval;
|
||||
unsigned int i;
|
||||
|
||||
retval = analyzeResult ( A, sizeof(A)/sizeof(*A) );
|
||||
|
||||
for ( i = 0; i < sizeof(A)/sizeof(*A); i++ ) {
|
||||
B[i] += A[i];
|
||||
A[i] = 0;
|
||||
}
|
||||
|
||||
for ( i = 0; i < MAX_ORDER; i++ )
|
||||
linprebuf[i] = lstepbuf[i] = loutbuf[i] = rinprebuf[i] = rstepbuf[i] = routbuf[i] = 0.f;
|
||||
|
||||
totsamp = 0;
|
||||
lsum = rsum = 0.;
|
||||
return retval;
|
||||
}
|
||||
|
||||
|
||||
GAIN_ANALYSIS_API
|
||||
Float_t
|
||||
GetAlbumGain ( void )
|
||||
{
|
||||
return analyzeResult ( B, sizeof(B)/sizeof(*B) );
|
||||
}
|
||||
|
||||
/* end of gain_analysis.c */
|
115
src/share/gain_analysis/gain_analysis.dsp
Normal file
115
src/share/gain_analysis/gain_analysis.dsp
Normal file
@ -0,0 +1,115 @@
|
||||
# Microsoft Developer Studio Project File - Name="gain_analysis" - Package Owner=<4>
|
||||
# Microsoft Developer Studio Generated Build File, Format Version 6.00
|
||||
# ** DO NOT EDIT **
|
||||
|
||||
# TARGTYPE "Win32 (x86) Dynamic-Link Library" 0x0102
|
||||
|
||||
CFG=gain_analysis - Win32 Debug
|
||||
!MESSAGE This is not a valid makefile. To build this project using NMAKE,
|
||||
!MESSAGE use the Export Makefile command and run
|
||||
!MESSAGE
|
||||
!MESSAGE NMAKE /f "gain_analysis.mak".
|
||||
!MESSAGE
|
||||
!MESSAGE You can specify a configuration when running NMAKE
|
||||
!MESSAGE by defining the macro CFG on the command line. For example:
|
||||
!MESSAGE
|
||||
!MESSAGE NMAKE /f "gain_analysis.mak" CFG="gain_analysis - Win32 Debug"
|
||||
!MESSAGE
|
||||
!MESSAGE Possible choices for configuration are:
|
||||
!MESSAGE
|
||||
!MESSAGE "gain_analysis - Win32 Release" (based on "Win32 (x86) Dynamic-Link Library")
|
||||
!MESSAGE "gain_analysis - Win32 Debug" (based on "Win32 (x86) Dynamic-Link Library")
|
||||
!MESSAGE
|
||||
|
||||
# Begin Project
|
||||
# PROP AllowPerConfigDependencies 0
|
||||
# PROP Scc_ProjName "gain_analysis"
|
||||
# PROP Scc_LocalPath "..\..\.."
|
||||
CPP=cl.exe
|
||||
MTL=midl.exe
|
||||
RSC=rc.exe
|
||||
|
||||
!IF "$(CFG)" == "gain_analysis - Win32 Release"
|
||||
|
||||
# PROP BASE Use_MFC 0
|
||||
# PROP BASE Use_Debug_Libraries 0
|
||||
# PROP BASE Output_Dir "Release"
|
||||
# PROP BASE Intermediate_Dir "Release"
|
||||
# PROP BASE Target_Dir ""
|
||||
# PROP Use_MFC 0
|
||||
# PROP Use_Debug_Libraries 0
|
||||
# PROP Output_Dir "..\..\..\obj\lib"
|
||||
# PROP Intermediate_Dir "Release"
|
||||
# PROP Ignore_Export_Lib 0
|
||||
# PROP Target_Dir ""
|
||||
# ADD BASE CPP /nologo /MT /W3 /GX /O2 /D "WIN32" /D "NDEBUG" /D "_WINDOWS" /YX /FD /c
|
||||
# ADD CPP /nologo /MD /W3 /GR /GX /O2 /I ".\include" /I "..\..\..\include" /D "NDEBUG" /D "GETOPT_API_EXPORTS" /D "_WINDOWS" /D "_WINDLL" /D "WIN32" /D "_USRDLL" /FR /FD /c
|
||||
# ADD BASE MTL /nologo /D "NDEBUG" /mktyplib203 /o "NUL" /win32
|
||||
# ADD MTL /nologo /D "NDEBUG" /mktyplib203 /o "NUL" /win32
|
||||
# ADD BASE RSC /l 0x409 /d "NDEBUG"
|
||||
# ADD RSC /l 0x409 /d "NDEBUG" /d "_USRDLL"
|
||||
BSC32=bscmake.exe
|
||||
# ADD BASE BSC32 /nologo
|
||||
# ADD BSC32 /nologo
|
||||
LINK32=link.exe
|
||||
# ADD BASE LINK32 kernel32.lib user32.lib gdi32.lib winspool.lib comdlg32.lib advapi32.lib shell32.lib ole32.lib oleaut32.lib uuid.lib odbc32.lib odbccp32.lib /nologo /subsystem:windows /dll /machine:I386
|
||||
# ADD LINK32 /nologo /subsystem:windows /dll /machine:I386 /out:"..\..\..\obj\bin/gain_analysis.dll"
|
||||
|
||||
!ELSEIF "$(CFG)" == "gain_analysis - Win32 Debug"
|
||||
|
||||
# PROP BASE Use_MFC 0
|
||||
# PROP BASE Use_Debug_Libraries 1
|
||||
# PROP BASE Output_Dir "Debug"
|
||||
# PROP BASE Intermediate_Dir "Debug"
|
||||
# PROP BASE Target_Dir ""
|
||||
# PROP Use_MFC 0
|
||||
# PROP Use_Debug_Libraries 1
|
||||
# PROP Output_Dir "..\..\..\obj\lib"
|
||||
# PROP Intermediate_Dir "Debug"
|
||||
# PROP Ignore_Export_Lib 0
|
||||
# PROP Target_Dir ""
|
||||
# ADD BASE CPP /nologo /MTd /W3 /Gm /GX /Zi /Od /D "WIN32" /D "_DEBUG" /D "_WINDOWS" /YX /FD /c
|
||||
# ADD CPP /nologo /MDd /W3 /Gm /GR /GX /ZI /Od /I ".\include" /I "..\..\..\include" /D "_DEBUG" /D "_CHATTER" /D "GETOPT_API_EXPORTS" /D "_WINDOWS" /D "_WINDLL" /D "WIN32" /D "_USRDLL" /FR /FD /c
|
||||
# ADD BASE MTL /nologo /D "_DEBUG" /mktyplib203 /o "NUL" /win32
|
||||
# ADD MTL /nologo /D "_DEBUG" /mktyplib203 /o "NUL" /win32
|
||||
# ADD BASE RSC /l 0x409 /d "_DEBUG"
|
||||
# ADD RSC /l 0x409 /d "_DEBUG" /d "_USRDLL"
|
||||
BSC32=bscmake.exe
|
||||
# ADD BASE BSC32 /nologo
|
||||
# ADD BSC32 /nologo
|
||||
LINK32=link.exe
|
||||
# ADD BASE LINK32 kernel32.lib user32.lib gdi32.lib winspool.lib comdlg32.lib advapi32.lib shell32.lib ole32.lib oleaut32.lib uuid.lib odbc32.lib odbccp32.lib /nologo /subsystem:windows /dll /debug /machine:I386 /pdbtype:sept
|
||||
# ADD LINK32 /nologo /subsystem:windows /dll /debug /machine:I386 /out:"..\..\..\obj\bin/gain_analysis.dll" /pdbtype:sept
|
||||
|
||||
!ENDIF
|
||||
|
||||
# Begin Target
|
||||
|
||||
# Name "gain_analysis - Win32 Release"
|
||||
# Name "gain_analysis - Win32 Debug"
|
||||
# Begin Group "Source Files"
|
||||
|
||||
# PROP Default_Filter "cpp"
|
||||
# Begin Source File
|
||||
|
||||
SOURCE=.\gain_analysis.c
|
||||
# End Source File
|
||||
# End Group
|
||||
# Begin Group "Private Header Files"
|
||||
|
||||
# PROP Default_Filter ""
|
||||
# End Group
|
||||
# Begin Group "Protected Header Files"
|
||||
|
||||
# PROP Default_Filter ""
|
||||
# End Group
|
||||
# Begin Group "Public Header Files"
|
||||
|
||||
# PROP Default_Filter ""
|
||||
# Begin Source File
|
||||
|
||||
SOURCE=..\..\..\include\share\gain_analysis.h
|
||||
# End Source File
|
||||
# End Group
|
||||
# End Target
|
||||
# End Project
|
BIN
src/share/gain_analysis/gain_analysis.o
Normal file
BIN
src/share/gain_analysis/gain_analysis.o
Normal file
Binary file not shown.
Loading…
Reference in New Issue
Block a user