summaryrefslogtreecommitdiff
path: root/examples
diff options
context:
space:
mode:
Diffstat (limited to 'examples')
-rw-r--r--examples/Makefile.am23
-rw-r--r--examples/Makefile.in385
-rw-r--r--examples/adddcoffset.c99
-rw-r--r--examples/irixread.c123
-rw-r--r--examples/irixtestloop.c150
-rw-r--r--examples/linuxtest.c170
-rw-r--r--examples/osxplay.c257
-rw-r--r--examples/power.c220
-rw-r--r--examples/sgi.c109
-rw-r--r--examples/sgi.h53
10 files changed, 1589 insertions, 0 deletions
diff --git a/examples/Makefile.am b/examples/Makefile.am
new file mode 100644
index 0000000..00634ad
--- /dev/null
+++ b/examples/Makefile.am
@@ -0,0 +1,23 @@
+INCLUDES = -I$(top_srcdir)/libaudiofile
+
+noinst_PROGRAMS = \
+ adddcoffset \
+ power \
+ @TEST_BIN@
+
+EXTRA_PROGRAMS = irixread irixtestloop linuxtest osxplay
+
+irixread_SOURCES = irixread.c sgi.c sgi.h
+irixread_LDADD = $(top_builddir)/libaudiofile/libaudiofile.la @AUDIO_LIB@
+
+irixtestloop_SOURCES = irixtestloop.c sgi.c sgi.h
+irixtestloop_LDADD = $(top_builddir)/libaudiofile/libaudiofile.la @AUDIO_LIB@
+
+linuxtest_SOURCES = linuxtest.c
+
+osxplay_SOURCES = osxplay.c
+osxplay_LDFLAGS = -framework AudioUnit -framework CoreServices
+
+LDADD = $(top_builddir)/libaudiofile/libaudiofile.la
+
+DEPENDENCIES = $(top_builddir)/libaudiofile/libaudiofile.la
diff --git a/examples/Makefile.in b/examples/Makefile.in
new file mode 100644
index 0000000..a34583d
--- /dev/null
+++ b/examples/Makefile.in
@@ -0,0 +1,385 @@
+# Makefile.in generated automatically by automake 1.5 from Makefile.am.
+
+# Copyright 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001
+# Free Software Foundation, Inc.
+# This Makefile.in is free software; the Free Software Foundation
+# gives unlimited permission to copy and/or distribute it,
+# with or without modifications, as long as this notice is preserved.
+
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY, to the extent permitted by law; without
+# even the implied warranty of MERCHANTABILITY or FITNESS FOR A
+# PARTICULAR PURPOSE.
+
+@SET_MAKE@
+
+SHELL = @SHELL@
+
+srcdir = @srcdir@
+top_srcdir = @top_srcdir@
+VPATH = @srcdir@
+prefix = @prefix@
+exec_prefix = @exec_prefix@
+
+bindir = @bindir@
+sbindir = @sbindir@
+libexecdir = @libexecdir@
+datadir = @datadir@
+sysconfdir = @sysconfdir@
+sharedstatedir = @sharedstatedir@
+localstatedir = @localstatedir@
+libdir = @libdir@
+infodir = @infodir@
+mandir = @mandir@
+includedir = @includedir@
+oldincludedir = /usr/include
+pkgdatadir = $(datadir)/@PACKAGE@
+pkglibdir = $(libdir)/@PACKAGE@
+pkgincludedir = $(includedir)/@PACKAGE@
+top_builddir = ..
+
+ACLOCAL = @ACLOCAL@
+AUTOCONF = @AUTOCONF@
+AUTOMAKE = @AUTOMAKE@
+AUTOHEADER = @AUTOHEADER@
+
+INSTALL = @INSTALL@
+INSTALL_PROGRAM = @INSTALL_PROGRAM@
+INSTALL_DATA = @INSTALL_DATA@
+INSTALL_SCRIPT = @INSTALL_SCRIPT@
+INSTALL_HEADER = $(INSTALL_DATA)
+transform = @program_transform_name@
+NORMAL_INSTALL = :
+PRE_INSTALL = :
+POST_INSTALL = :
+NORMAL_UNINSTALL = :
+PRE_UNINSTALL = :
+POST_UNINSTALL = :
+host_alias = @host_alias@
+host_triplet = @host@
+AMTAR = @AMTAR@
+AS = @AS@
+AUDIOFILE_MAJOR_VERSION = @AUDIOFILE_MAJOR_VERSION@
+AUDIOFILE_MICRO_VERSION = @AUDIOFILE_MICRO_VERSION@
+AUDIOFILE_MINOR_VERSION = @AUDIOFILE_MINOR_VERSION@
+AUDIOFILE_VERSION = @AUDIOFILE_VERSION@
+AUDIOFILE_VERSION_INFO = @AUDIOFILE_VERSION_INFO@
+AUDIO_LIB = @AUDIO_LIB@
+AWK = @AWK@
+CC = @CC@
+DEPDIR = @DEPDIR@
+DLLTOOL = @DLLTOOL@
+ECHO = @ECHO@
+EXEEXT = @EXEEXT@
+INSTALL_STRIP_PROGRAM = @INSTALL_STRIP_PROGRAM@
+LIBTOOL = @LIBTOOL@
+LN_S = @LN_S@
+OBJDUMP = @OBJDUMP@
+OBJEXT = @OBJEXT@
+PACKAGE = @PACKAGE@
+RANLIB = @RANLIB@
+STRIP = @STRIP@
+TEST_BIN = @TEST_BIN@
+VERSION = @VERSION@
+am__include = @am__include@
+am__quote = @am__quote@
+install_sh = @install_sh@
+
+INCLUDES = -I$(top_srcdir)/libaudiofile
+
+noinst_PROGRAMS = \
+ adddcoffset \
+ power \
+ @TEST_BIN@
+
+
+EXTRA_PROGRAMS = irixread irixtestloop linuxtest osxplay
+
+irixread_SOURCES = irixread.c sgi.c sgi.h
+irixread_LDADD = $(top_builddir)/libaudiofile/libaudiofile.la @AUDIO_LIB@
+
+irixtestloop_SOURCES = irixtestloop.c sgi.c sgi.h
+irixtestloop_LDADD = $(top_builddir)/libaudiofile/libaudiofile.la @AUDIO_LIB@
+
+linuxtest_SOURCES = linuxtest.c
+
+osxplay_SOURCES = osxplay.c
+osxplay_LDFLAGS = -framework AudioUnit -framework CoreServices
+
+LDADD = $(top_builddir)/libaudiofile/libaudiofile.la
+
+DEPENDENCIES = $(top_builddir)/libaudiofile/libaudiofile.la
+subdir = examples
+mkinstalldirs = $(SHELL) $(top_srcdir)/mkinstalldirs
+CONFIG_HEADER = $(top_builddir)/config.h
+CONFIG_CLEAN_FILES =
+EXTRA_PROGRAMS = irixread$(EXEEXT) irixtestloop$(EXEEXT) \
+ linuxtest$(EXEEXT) osxplay$(EXEEXT)
+noinst_PROGRAMS = adddcoffset$(EXEEXT) power$(EXEEXT) @TEST_BIN@
+PROGRAMS = $(noinst_PROGRAMS)
+
+adddcoffset_SOURCES = adddcoffset.c
+adddcoffset_OBJECTS = adddcoffset.$(OBJEXT)
+adddcoffset_LDADD = $(LDADD)
+adddcoffset_DEPENDENCIES = $(top_builddir)/libaudiofile/libaudiofile.la
+adddcoffset_LDFLAGS =
+am_irixread_OBJECTS = irixread.$(OBJEXT) sgi.$(OBJEXT)
+irixread_OBJECTS = $(am_irixread_OBJECTS)
+irixread_DEPENDENCIES = $(top_builddir)/libaudiofile/libaudiofile.la
+irixread_LDFLAGS =
+am_irixtestloop_OBJECTS = irixtestloop.$(OBJEXT) sgi.$(OBJEXT)
+irixtestloop_OBJECTS = $(am_irixtestloop_OBJECTS)
+irixtestloop_DEPENDENCIES = $(top_builddir)/libaudiofile/libaudiofile.la
+irixtestloop_LDFLAGS =
+am_linuxtest_OBJECTS = linuxtest.$(OBJEXT)
+linuxtest_OBJECTS = $(am_linuxtest_OBJECTS)
+linuxtest_LDADD = $(LDADD)
+linuxtest_DEPENDENCIES = $(top_builddir)/libaudiofile/libaudiofile.la
+linuxtest_LDFLAGS =
+am_osxplay_OBJECTS = osxplay.$(OBJEXT)
+osxplay_OBJECTS = $(am_osxplay_OBJECTS)
+osxplay_LDADD = $(LDADD)
+osxplay_DEPENDENCIES = $(top_builddir)/libaudiofile/libaudiofile.la
+power_SOURCES = power.c
+power_OBJECTS = power.$(OBJEXT)
+power_LDADD = $(LDADD)
+power_DEPENDENCIES = $(top_builddir)/libaudiofile/libaudiofile.la
+power_LDFLAGS =
+
+DEFS = @DEFS@
+DEFAULT_INCLUDES = -I. -I$(srcdir) -I$(top_builddir)
+CPPFLAGS = @CPPFLAGS@
+LDFLAGS = @LDFLAGS@
+LIBS = @LIBS@
+depcomp = $(SHELL) $(top_srcdir)/depcomp
+@AMDEP_TRUE@DEP_FILES = $(DEPDIR)/adddcoffset.Po $(DEPDIR)/irixread.Po \
+@AMDEP_TRUE@ $(DEPDIR)/irixtestloop.Po $(DEPDIR)/linuxtest.Po \
+@AMDEP_TRUE@ $(DEPDIR)/osxplay.Po $(DEPDIR)/power.Po \
+@AMDEP_TRUE@ $(DEPDIR)/sgi.Po
+COMPILE = $(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) \
+ $(CPPFLAGS) $(AM_CFLAGS) $(CFLAGS)
+LTCOMPILE = $(LIBTOOL) --mode=compile $(CC) $(DEFS) $(DEFAULT_INCLUDES) \
+ $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) $(AM_CFLAGS) $(CFLAGS)
+CCLD = $(CC)
+LINK = $(LIBTOOL) --mode=link $(CCLD) $(AM_CFLAGS) $(CFLAGS) \
+ $(AM_LDFLAGS) $(LDFLAGS) -o $@
+CFLAGS = @CFLAGS@
+DIST_SOURCES = adddcoffset.c $(irixread_SOURCES) $(irixtestloop_SOURCES) \
+ $(linuxtest_SOURCES) $(osxplay_SOURCES) power.c
+DIST_COMMON = Makefile.am Makefile.in
+SOURCES = adddcoffset.c $(irixread_SOURCES) $(irixtestloop_SOURCES) $(linuxtest_SOURCES) $(osxplay_SOURCES) power.c
+
+all: all-am
+
+.SUFFIXES:
+.SUFFIXES: .c .lo .o .obj
+
+mostlyclean-libtool:
+ -rm -f *.lo
+
+clean-libtool:
+ -rm -rf .libs _libs
+
+distclean-libtool:
+ -rm -f libtool
+$(srcdir)/Makefile.in: Makefile.am $(top_srcdir)/configure.in $(ACLOCAL_M4)
+ cd $(top_srcdir) && \
+ $(AUTOMAKE) --gnu examples/Makefile
+Makefile: $(srcdir)/Makefile.in $(top_builddir)/config.status
+ cd $(top_builddir) && \
+ CONFIG_HEADERS= CONFIG_LINKS= \
+ CONFIG_FILES=$(subdir)/$@ $(SHELL) ./config.status
+
+clean-noinstPROGRAMS:
+ -test -z "$(noinst_PROGRAMS)" || rm -f $(noinst_PROGRAMS)
+adddcoffset$(EXEEXT): $(adddcoffset_OBJECTS) $(adddcoffset_DEPENDENCIES)
+ @rm -f adddcoffset$(EXEEXT)
+ $(LINK) $(adddcoffset_LDFLAGS) $(adddcoffset_OBJECTS) $(adddcoffset_LDADD) $(LIBS)
+irixread$(EXEEXT): $(irixread_OBJECTS) $(irixread_DEPENDENCIES)
+ @rm -f irixread$(EXEEXT)
+ $(LINK) $(irixread_LDFLAGS) $(irixread_OBJECTS) $(irixread_LDADD) $(LIBS)
+irixtestloop$(EXEEXT): $(irixtestloop_OBJECTS) $(irixtestloop_DEPENDENCIES)
+ @rm -f irixtestloop$(EXEEXT)
+ $(LINK) $(irixtestloop_LDFLAGS) $(irixtestloop_OBJECTS) $(irixtestloop_LDADD) $(LIBS)
+linuxtest$(EXEEXT): $(linuxtest_OBJECTS) $(linuxtest_DEPENDENCIES)
+ @rm -f linuxtest$(EXEEXT)
+ $(LINK) $(linuxtest_LDFLAGS) $(linuxtest_OBJECTS) $(linuxtest_LDADD) $(LIBS)
+osxplay$(EXEEXT): $(osxplay_OBJECTS) $(osxplay_DEPENDENCIES)
+ @rm -f osxplay$(EXEEXT)
+ $(LINK) $(osxplay_LDFLAGS) $(osxplay_OBJECTS) $(osxplay_LDADD) $(LIBS)
+power$(EXEEXT): $(power_OBJECTS) $(power_DEPENDENCIES)
+ @rm -f power$(EXEEXT)
+ $(LINK) $(power_LDFLAGS) $(power_OBJECTS) $(power_LDADD) $(LIBS)
+
+mostlyclean-compile:
+ -rm -f *.$(OBJEXT) core *.core
+
+distclean-compile:
+ -rm -f *.tab.c
+
+@AMDEP_TRUE@@am__include@ @am__quote@$(DEPDIR)/adddcoffset.Po@am__quote@
+@AMDEP_TRUE@@am__include@ @am__quote@$(DEPDIR)/irixread.Po@am__quote@
+@AMDEP_TRUE@@am__include@ @am__quote@$(DEPDIR)/irixtestloop.Po@am__quote@
+@AMDEP_TRUE@@am__include@ @am__quote@$(DEPDIR)/linuxtest.Po@am__quote@
+@AMDEP_TRUE@@am__include@ @am__quote@$(DEPDIR)/osxplay.Po@am__quote@
+@AMDEP_TRUE@@am__include@ @am__quote@$(DEPDIR)/power.Po@am__quote@
+@AMDEP_TRUE@@am__include@ @am__quote@$(DEPDIR)/sgi.Po@am__quote@
+
+distclean-depend:
+ -rm -rf $(DEPDIR)
+
+.c.o:
+@AMDEP_TRUE@ source='$<' object='$@' libtool=no @AMDEPBACKSLASH@
+@AMDEP_TRUE@ depfile='$(DEPDIR)/$*.Po' tmpdepfile='$(DEPDIR)/$*.TPo' @AMDEPBACKSLASH@
+@AMDEP_TRUE@ $(CCDEPMODE) $(depcomp) @AMDEPBACKSLASH@
+ $(COMPILE) -c `test -f $< || echo '$(srcdir)/'`$<
+
+.c.obj:
+@AMDEP_TRUE@ source='$<' object='$@' libtool=no @AMDEPBACKSLASH@
+@AMDEP_TRUE@ depfile='$(DEPDIR)/$*.Po' tmpdepfile='$(DEPDIR)/$*.TPo' @AMDEPBACKSLASH@
+@AMDEP_TRUE@ $(CCDEPMODE) $(depcomp) @AMDEPBACKSLASH@
+ $(COMPILE) -c `cygpath -w $<`
+
+.c.lo:
+@AMDEP_TRUE@ source='$<' object='$@' libtool=yes @AMDEPBACKSLASH@
+@AMDEP_TRUE@ depfile='$(DEPDIR)/$*.Plo' tmpdepfile='$(DEPDIR)/$*.TPlo' @AMDEPBACKSLASH@
+@AMDEP_TRUE@ $(CCDEPMODE) $(depcomp) @AMDEPBACKSLASH@
+ $(LTCOMPILE) -c -o $@ `test -f $< || echo '$(srcdir)/'`$<
+CCDEPMODE = @CCDEPMODE@
+uninstall-info-am:
+
+tags: TAGS
+
+ID: $(HEADERS) $(SOURCES) $(LISP) $(TAGS_FILES)
+ list='$(SOURCES) $(HEADERS) $(TAGS_FILES)'; \
+ unique=`for i in $$list; do \
+ if test -f "$$i"; then echo $$i; else echo $(srcdir)/$$i; fi; \
+ done | \
+ $(AWK) ' { files[$$0] = 1; } \
+ END { for (i in files) print i; }'`; \
+ mkid -fID $$unique $(LISP)
+
+TAGS: $(HEADERS) $(SOURCES) $(TAGS_DEPENDENCIES) \
+ $(TAGS_FILES) $(LISP)
+ tags=; \
+ here=`pwd`; \
+ list='$(SOURCES) $(HEADERS) $(TAGS_FILES)'; \
+ unique=`for i in $$list; do \
+ if test -f "$$i"; then echo $$i; else echo $(srcdir)/$$i; fi; \
+ done | \
+ $(AWK) ' { files[$$0] = 1; } \
+ END { for (i in files) print i; }'`; \
+ test -z "$(ETAGS_ARGS)$$unique$(LISP)$$tags" \
+ || etags $(ETAGS_ARGS) $$tags $$unique $(LISP)
+
+GTAGS:
+ here=`CDPATH=: && cd $(top_builddir) && pwd` \
+ && cd $(top_srcdir) \
+ && gtags -i $(GTAGS_ARGS) $$here
+
+distclean-tags:
+ -rm -f TAGS ID GTAGS GRTAGS GSYMS GPATH
+
+DISTFILES = $(DIST_COMMON) $(DIST_SOURCES) $(TEXINFOS) $(EXTRA_DIST)
+
+top_distdir = ..
+distdir = $(top_distdir)/$(PACKAGE)-$(VERSION)
+
+distdir: $(DISTFILES)
+ @for file in $(DISTFILES); do \
+ if test -f $$file; then d=.; else d=$(srcdir); fi; \
+ dir=`echo "$$file" | sed -e 's,/[^/]*$$,,'`; \
+ if test "$$dir" != "$$file" && test "$$dir" != "."; then \
+ $(mkinstalldirs) "$(distdir)/$$dir"; \
+ fi; \
+ if test -d $$d/$$file; then \
+ cp -pR $$d/$$file $(distdir) \
+ || exit 1; \
+ else \
+ test -f $(distdir)/$$file \
+ || cp -p $$d/$$file $(distdir)/$$file \
+ || exit 1; \
+ fi; \
+ done
+check-am: all-am
+check: check-am
+all-am: Makefile $(PROGRAMS)
+
+installdirs:
+
+install: install-am
+install-exec: install-exec-am
+install-data: install-data-am
+uninstall: uninstall-am
+
+install-am: all-am
+ @$(MAKE) $(AM_MAKEFLAGS) install-exec-am install-data-am
+
+installcheck: installcheck-am
+install-strip:
+ $(MAKE) $(AM_MAKEFLAGS) INSTALL_PROGRAM="$(INSTALL_STRIP_PROGRAM)" \
+ `test -z '$(STRIP)' || \
+ echo "INSTALL_PROGRAM_ENV=STRIPPROG='$(STRIP)'"` install
+mostlyclean-generic:
+
+clean-generic:
+
+distclean-generic:
+ -rm -f Makefile $(CONFIG_CLEAN_FILES) stamp-h stamp-h[0-9]*
+
+maintainer-clean-generic:
+ @echo "This command is intended for maintainers to use"
+ @echo "it deletes files that may require special tools to rebuild."
+clean: clean-am
+
+clean-am: clean-generic clean-libtool clean-noinstPROGRAMS \
+ mostlyclean-am
+
+distclean: distclean-am
+
+distclean-am: clean-am distclean-compile distclean-depend \
+ distclean-generic distclean-libtool distclean-tags
+
+dvi: dvi-am
+
+dvi-am:
+
+info: info-am
+
+info-am:
+
+install-data-am:
+
+install-exec-am:
+
+install-info: install-info-am
+
+install-man:
+
+installcheck-am:
+
+maintainer-clean: maintainer-clean-am
+
+maintainer-clean-am: distclean-am maintainer-clean-generic
+
+mostlyclean: mostlyclean-am
+
+mostlyclean-am: mostlyclean-compile mostlyclean-generic \
+ mostlyclean-libtool
+
+uninstall-am: uninstall-info-am
+
+.PHONY: GTAGS all all-am check check-am clean clean-generic \
+ clean-libtool clean-noinstPROGRAMS distclean distclean-compile \
+ distclean-depend distclean-generic distclean-libtool \
+ distclean-tags distdir dvi dvi-am info info-am install \
+ install-am install-data install-data-am install-exec \
+ install-exec-am install-info install-info-am install-man \
+ install-strip installcheck installcheck-am installdirs \
+ maintainer-clean maintainer-clean-generic mostlyclean \
+ mostlyclean-compile mostlyclean-generic mostlyclean-libtool \
+ tags uninstall uninstall-am uninstall-info-am
+
+# Tell versions [3.59,3.63) of GNU make to not export all variables.
+# Otherwise a system limit (for SysV at least) may be exceeded.
+.NOEXPORT:
diff --git a/examples/adddcoffset.c b/examples/adddcoffset.c
new file mode 100644
index 0000000..cadc6cb
--- /dev/null
+++ b/examples/adddcoffset.c
@@ -0,0 +1,99 @@
+/*
+ Audio File Library
+
+ Copyright 1998, Michael Pruett <michael@68k.org>
+
+ 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.
+*/
+
+/*
+ adddcoffset.c
+
+ This program adds a user-specified DC offset term to a sound file.
+ It's not very useful.
+*/
+
+#include <stdio.h>
+#include <stdlib.h>
+
+#ifdef __USE_SGI_HEADERS__
+#include <dmedia/audiofile.h>
+#else
+#include "audiofile.h"
+#endif
+
+void adddcoffset (float offset, char *infilename, char *outfilename);
+void usageerror (void);
+
+int main (int ac, char **av)
+{
+ float offset;
+
+ if (ac != 4)
+ usageerror();
+
+ offset = atof(av[1]);
+ adddcoffset(offset, av[2], av[3]);
+ return 0;
+}
+
+void adddcoffset (float offset, char *infilename, char *outfilename)
+{
+ AFfilehandle infile = afOpenFile(infilename, "r", NULL);
+ int channelCount, frameCount;
+ short *buffer;
+ int i;
+
+ AFfilesetup outfilesetup = afNewFileSetup();
+ AFfilehandle outfile;
+
+ frameCount = afGetFrameCount(infile, AF_DEFAULT_TRACK);
+ channelCount = afGetChannels(infile, AF_DEFAULT_TRACK);
+
+ afInitFileFormat(outfilesetup, AF_FILE_AIFF);
+ afInitByteOrder(outfilesetup, AF_DEFAULT_TRACK, AF_BYTEORDER_BIGENDIAN);
+ afInitChannels(outfilesetup, AF_DEFAULT_TRACK, channelCount);
+ afInitRate(outfilesetup, AF_DEFAULT_TRACK, 44100.0);
+ afInitSampleFormat(outfilesetup, AF_DEFAULT_TRACK, AF_SAMPFMT_TWOSCOMP, 16);
+
+ outfile = afOpenFile(outfilename, "w", outfilesetup);
+
+ if (infile == NULL)
+ {
+ printf("unable to open input file '%s'.\n", infilename);
+ return;
+ }
+
+ printf("afGetFrameCount: %d\n", (int)afGetFrameCount(infile, AF_DEFAULT_TRACK));
+ printf("afGetChannels: %d\n", afGetChannels(infile, AF_DEFAULT_TRACK));
+
+ buffer = (short *) malloc(frameCount * channelCount * sizeof (short));
+ afReadFrames(infile, AF_DEFAULT_TRACK, (void *) buffer, frameCount);
+
+ for (i=0; i<frameCount; i++)
+ {
+ buffer[i] += offset;
+ }
+
+ afWriteFrames(outfile, AF_DEFAULT_TRACK, (void *) buffer, frameCount);
+ afCloseFile(outfile);
+}
+
+void usageerror (void)
+{
+ fprintf(stderr, "usage: adddcoffset offset infile outfile\n");
+ exit(EXIT_FAILURE);
+}
diff --git a/examples/irixread.c b/examples/irixread.c
new file mode 100644
index 0000000..567949c
--- /dev/null
+++ b/examples/irixread.c
@@ -0,0 +1,123 @@
+/*
+ Audio File Library
+
+ Copyright (C) 1998-1999, Michael Pruett <michael@68k.org>
+ Copyright (C) 2001, Silicon Graphics, 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.
+*/
+
+/*
+ irixread.c
+
+ This program reads and plays a given audio file using Irix's
+ default audio output device. This file will not work on any
+ operating system other than Irix.
+
+ The only difference between this program and irixtest is that this
+ program does not load the entire audio track into memory at once.
+ Only a small number of frames are read into a buffer and then
+ written to the audio port. While there are more frames to be
+ read, this process is repeated.
+*/
+
+#ifdef HAVE_CONFIG_H
+#include <config.h>
+#endif
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <sys/types.h>
+#include <dmedia/audio.h>
+#include <dmedia/audiofile.h>
+
+#include "sgi.h"
+
+const int BUFFERED_FRAME_COUNT = 65536;
+
+void usage (void)
+{
+ fprintf(stderr, "usage: irixread filename\n");
+ exit(EXIT_FAILURE);
+}
+
+main (int argc, char **argv)
+{
+ AFfilehandle file;
+ AFframecount count, frameCount;
+ int channelCount, sampleFormat, sampleWidth;
+ float frameSize;
+ void *buffer;
+ double sampleRate;
+
+ ALport outport;
+ ALconfig outportconfig;
+
+ if (argc < 2)
+ usage();
+
+ file = afOpenFile(argv[1], "r", NULL);
+ if (file == AF_NULL_FILEHANDLE)
+ {
+ fprintf(stderr, "Could not open file %s.\n", argv[1]);
+ exit(EXIT_FAILURE);
+ }
+
+ frameCount = afGetFrameCount(file, AF_DEFAULT_TRACK);
+ frameSize = afGetVirtualFrameSize(file, AF_DEFAULT_TRACK, 1);
+ channelCount = afGetVirtualChannels(file, AF_DEFAULT_TRACK);
+ sampleRate = afGetRate(file, AF_DEFAULT_TRACK);
+ afGetVirtualSampleFormat(file, AF_DEFAULT_TRACK, &sampleFormat,
+ &sampleWidth);
+
+ if (sampleFormat == AF_SAMPFMT_UNSIGNED)
+ {
+ afSetVirtualSampleFormat(file, AF_DEFAULT_TRACK,
+ AF_SAMPFMT_TWOSCOMP, sampleWidth);
+ }
+
+ printf("frame count: %lld\n", frameCount);
+ printf("frame size: %d bytes\n", (int) frameSize);
+ printf("channel count: %d\n", channelCount);
+ printf("sample rate: %.2f Hz\n", sampleRate);
+ buffer = malloc(BUFFERED_FRAME_COUNT * frameSize);
+
+ outportconfig = alNewConfig();
+ setwidth(outportconfig, sampleWidth);
+ setsampleformat(outportconfig, sampleFormat);
+ alSetChannels(outportconfig, channelCount);
+
+ count = afReadFrames(file, AF_DEFAULT_TRACK, buffer, BUFFERED_FRAME_COUNT);
+
+ outport = alOpenPort("irixread", "w", outportconfig);
+ setrate(outport, sampleRate);
+
+ do
+ {
+ printf("count = %lld\n", count);
+ alWriteFrames(outport, buffer, count);
+
+ count = afReadFrames(file, AF_DEFAULT_TRACK, buffer,
+ BUFFERED_FRAME_COUNT);
+ } while (count > 0);
+
+ waitport(outport);
+
+ alClosePort(outport);
+ alFreeConfig(outportconfig);
+
+ afCloseFile(file);
+}
diff --git a/examples/irixtestloop.c b/examples/irixtestloop.c
new file mode 100644
index 0000000..514a4f5
--- /dev/null
+++ b/examples/irixtestloop.c
@@ -0,0 +1,150 @@
+/*
+ Audio File Library
+
+ Copyright (C) 1998-1999, Michael Pruett <michael@68k.org>
+ Copyright (C) 2001, Silicon Graphics, 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.
+*/
+
+/*
+ irixtestloop.c
+
+ This file reads the loop points from a file (presumably AIFF) and
+ loops that part of the file several times. Audio output is routed
+ to IRIX's default audio output device. This program will not
+ compile on any platform other than IRIX.
+*/
+
+#ifdef HAVE_CONFIG_H
+#include <config.h>
+#endif
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <sys/types.h>
+#include <dmedia/audio.h>
+#include <dmedia/audiofile.h>
+
+#include "sgi.h"
+
+const int REPEAT_COUNT = 3;
+
+void usage (void)
+{
+ printf("usage: irixtestloop file\n");
+ printf("where file is of a format which contains a loop (e.g. AIFF)\n");
+ exit(EXIT_FAILURE);
+}
+
+main (int argc, char **argv)
+{
+ AFfilehandle file;
+ void *buffer;
+
+ AFframecount frameCount;
+ int sampleFormat, sampleWidth, channelCount;
+ float frameSize;
+ double sampleRate;
+
+ int *loopids, *markids;
+ int i, loopCount, markCount;
+ int startmarkid, endmarkid;
+ AFframecount startloop, endloop;
+
+ ALport outport;
+ ALconfig outportconfig;
+
+ if (argc < 2)
+ usage();
+
+ file = afOpenFile(argv[1], "r", NULL);
+ frameCount = afGetFrameCount(file, AF_DEFAULT_TRACK);
+ frameSize = afGetVirtualFrameSize(file, AF_DEFAULT_TRACK, 1);
+ channelCount = afGetVirtualChannels(file, AF_DEFAULT_TRACK);
+ afGetVirtualSampleFormat(file, AF_DEFAULT_TRACK, &sampleFormat, &sampleWidth);
+ sampleRate = afGetRate(file, AF_DEFAULT_TRACK);
+
+ /*
+ If the file's sample format is unsigned integer data,
+ change the virtual sample format to two's complement
+ since the SGI Audio Library won't accept unsigned
+ data.
+ */
+ if (sampleFormat == AF_SAMPFMT_UNSIGNED)
+ {
+ afSetVirtualSampleFormat(file, AF_DEFAULT_TRACK,
+ AF_SAMPFMT_TWOSCOMP, sampleWidth);
+ }
+
+ printf("frame count: %lld\n", frameCount);
+ printf("frame size: %d bytes\n", frameSize);
+ printf("channel count: %d\n", channelCount);
+ printf("sample rate: %.2f Hz\n", sampleRate);
+
+ buffer = malloc(frameCount * frameSize);
+ afReadFrames(file, AF_DEFAULT_TRACK, buffer, frameCount);
+
+ loopCount = afGetLoopIDs(file, AF_DEFAULT_INST, NULL);
+ loopids = malloc(sizeof (int) * loopCount);
+ afGetLoopIDs(file, AF_DEFAULT_INST, loopids);
+
+ markCount = afGetMarkIDs(file, AF_DEFAULT_TRACK, NULL);
+ markids = malloc(sizeof (int) * markCount);
+ afGetMarkIDs(file, AF_DEFAULT_TRACK, markids);
+
+ printf("loop ids:");
+ for (i=0; i<loopCount; i++)
+ printf(" %d", loopids[i]);
+ printf("\n");
+
+ printf("mark ids:");
+ for (i=0; i<markCount; i++)
+ printf(" %d", markids[i]);
+ printf("\n");
+
+ startmarkid = afGetLoopStart(file, AF_DEFAULT_INST, 1);
+ endmarkid = afGetLoopEnd(file, AF_DEFAULT_INST, 1);
+ startloop = afGetMarkPosition(file, AF_DEFAULT_TRACK, startmarkid);
+ endloop = afGetMarkPosition(file, AF_DEFAULT_TRACK, endmarkid);
+
+ afCloseFile(file);
+
+ outportconfig = alNewConfig();
+ setwidth(outportconfig, sampleWidth);
+ setsampleformat(outportconfig, sampleFormat);
+ alSetChannels(outportconfig, channelCount);
+
+ outport = alOpenPort("irixtestloop", "w", outportconfig);
+ setrate(outport, sampleRate);
+
+ alWriteFrames(outport, buffer, startloop);
+ for (i=0; i<REPEAT_COUNT; i++)
+ {
+ printf("iteration %d: start %lld, end %lld, length %lld\n",
+ i, endloop, startloop, endloop - startloop);
+ alWriteFrames(outport,
+ (char *) buffer + (int) (startloop * frameSize),
+ endloop - startloop);
+ }
+
+ waitport(outport);
+
+ alClosePort(outport);
+ alFreeConfig(outportconfig);
+
+ free(buffer);
+}
diff --git a/examples/linuxtest.c b/examples/linuxtest.c
new file mode 100644
index 0000000..710083d
--- /dev/null
+++ b/examples/linuxtest.c
@@ -0,0 +1,170 @@
+/*
+ Audio File Library
+
+ Copyright (c) 1998-1999, Michael Pruett <michael@68k.org>
+ Copyright (c) 2001, Silicon Graphics, 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.
+*/
+
+/*
+ linuxtest.c
+
+ This file plays a 16-bit, 44.1 kHz monophonic or stereophonic
+ audio file through a PC sound card on a Linux system. This file
+ will not compile under any operating system that does not support
+ the Open Sound System API.
+*/
+
+#include <stdio.h>
+#include <sys/ioctl.h>
+#include <unistd.h>
+#include <stdlib.h>
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <fcntl.h>
+#include <linux/soundcard.h>
+
+#include <audiofile.h>
+
+#ifdef HAVE_CONFIG_H
+#include <config.h>
+#endif
+
+/*
+ If it's not defined already, define the native audio hardware
+ byte order.
+*/
+
+#ifndef AFMT_S16_NE
+#ifdef WORDS_BIGENDIAN /* defined in config.h */
+#define AFMT_S16_NE AFMT_S16_BE
+#else
+#define AFMT_S16_NE AFMT_S16_LE
+#endif /* WORDS_BIGENDIAN */
+#endif /* AFMT_S16_NE */
+
+void setupdsp (int audiofd, int channelCount);
+void usage (void);
+
+/* BUFFER_FRAMES represents the size of the buffer in frames. */
+#define BUFFER_FRAMES 4096
+
+int main (int argc, char **argv)
+{
+ AFfilehandle file;
+ AFframecount frameCount, framesRead;
+ int sampleFormat, sampleWidth, channelCount;
+ float frameSize;
+ void *buffer;
+ int audiofd;
+
+ if (argc != 2)
+ usage();
+
+ file = afOpenFile(argv[1], "r", NULL);
+ frameCount = afGetFrameCount(file, AF_DEFAULT_TRACK);
+ printf("frame count: %d\n", (int) frameCount);
+
+ channelCount = afGetVirtualChannels(file, AF_DEFAULT_TRACK);
+ afGetVirtualSampleFormat(file, AF_DEFAULT_TRACK, &sampleFormat,
+ &sampleWidth);
+
+ frameSize = afGetVirtualFrameSize(file, AF_DEFAULT_TRACK, 1);
+
+ printf("sample format: %d, sample width: %d, channels: %d\n",
+ sampleFormat, sampleWidth, channelCount);
+
+ if ((sampleFormat != AF_SAMPFMT_TWOSCOMP) &&
+ (sampleFormat != AF_SAMPFMT_UNSIGNED))
+ {
+ fprintf(stderr, "The audio file must contain integer data in two's complement or unsigned format.\n");
+ exit(EXIT_FAILURE);
+ }
+
+ if ((sampleWidth != 16) || (channelCount > 2))
+ {
+ fprintf(stderr, "The audio file must be of a 16-bit monophonic or stereophonic format.\n");
+ exit(EXIT_FAILURE);
+ }
+
+ buffer = malloc(BUFFER_FRAMES * frameSize);
+
+ audiofd = open("/dev/dsp", O_WRONLY);
+ if (audiofd < 0)
+ {
+ perror("open");
+ exit(EXIT_FAILURE);
+ }
+
+ setupdsp(audiofd, channelCount);
+
+ framesRead = afReadFrames(file, AF_DEFAULT_TRACK, buffer,
+ BUFFER_FRAMES);
+
+ while (framesRead > 0)
+ {
+ printf("read %ld frames\n", framesRead);
+ write(audiofd, buffer, framesRead * frameSize);
+ framesRead = afReadFrames(file, AF_DEFAULT_TRACK, buffer,
+ BUFFER_FRAMES);
+ }
+
+ close(audiofd);
+ free(buffer);
+
+ return 0;
+}
+
+void setupdsp (int audiofd, int channelCount)
+{
+ int format, frequency, channels;
+
+ format = AFMT_S16_NE;
+ if (ioctl(audiofd, SNDCTL_DSP_SETFMT, &format) == -1)
+ {
+ perror("set format");
+ exit(EXIT_FAILURE);
+ }
+
+ if (format != AFMT_S16_NE)
+ {
+ fprintf(stderr, "format not correct.\n");
+ exit(EXIT_FAILURE);
+ }
+
+ channels = channelCount;
+ if (ioctl(audiofd, SNDCTL_DSP_CHANNELS, &channels) == -1)
+ {
+ perror("set channels");
+ exit(EXIT_FAILURE);
+ }
+
+ frequency = 44100;
+ if (ioctl(audiofd, SNDCTL_DSP_SPEED, &frequency) == -1)
+ {
+ perror("set frequency");
+ exit(EXIT_FAILURE);
+ }
+}
+
+void usage (void)
+{
+ fprintf(stderr, "usage: linuxtest file\n");
+ fprintf(stderr,
+ "where file refers to a 16-bit monophonic or stereophonic 44.1 kHz audio file\n");
+ exit(EXIT_FAILURE);
+}
diff --git a/examples/osxplay.c b/examples/osxplay.c
new file mode 100644
index 0000000..0708c68
--- /dev/null
+++ b/examples/osxplay.c
@@ -0,0 +1,257 @@
+/*
+ Audio File Library
+
+ Copyright (c) 2003, Michael Pruett. All rights reserved.
+
+ Redistribution and use in source and binary forms, with or
+ without modification, are permitted provided that the following
+ conditions are met:
+
+ 1. Redistributions of source code must retain the above copyright
+ notice, this list of conditions and the following disclaimer.
+
+ 2. Redistributions in binary form must reproduce the above
+ copyright notice, this list of conditions and the following
+ disclaimer in the documentation and/or other materials provided
+ with the distribution.
+
+ 3. The name of the author may not be used to endorse or promote
+ products derived from this software without specific prior
+ written permission.
+
+ THIS SOFTWARE IS PROVIDED "AS IS" AND ANY EXPRESS OR IMPLIED
+ WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+ OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+ DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
+ DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE
+ GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+ INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
+ WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
+ NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+ THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+*/
+
+/*
+ osxplay.c
+
+ This program demonstrates audio file playback using the Audio
+ File Library and Core Audio.
+*/
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <audiofile.h>
+
+#include <CoreServices/CoreServices.h>
+#include <AudioUnit/AudioUnit.h>
+#include <CoreAudio/CoreAudio.h>
+
+#define BUFFER_FRAME_COUNT 1024
+
+int isPlaying = 1;
+void *buffer = NULL;
+
+void getASBDForFile (AFfilehandle file, int track,
+ AudioStreamBasicDescription *asbd)
+{
+ int sampleFormat, sampleWidth, channelCount;
+ double rate;
+
+ afGetVirtualSampleFormat(file, track, &sampleFormat, &sampleWidth);
+ channelCount = afGetChannels(file, track);
+ rate = afGetRate(file, track);
+
+ asbd->mSampleRate = rate;
+ asbd->mFormatID = kAudioFormatLinearPCM;
+ switch (sampleFormat)
+ {
+ case AF_SAMPFMT_TWOSCOMP:
+ asbd->mFormatFlags = kAudioFormatFlagIsSignedInteger;
+ asbd->mBitsPerChannel = sampleWidth;
+ break;
+ case AF_SAMPFMT_UNSIGNED:
+ asbd->mFormatFlags = 0;
+ asbd->mBitsPerChannel = sampleWidth;
+ break;
+ case AF_SAMPFMT_FLOAT:
+ asbd->mFormatFlags = kAudioFormatFlagIsFloat;
+ asbd->mBitsPerChannel = 32;
+ break;
+ case AF_SAMPFMT_DOUBLE:
+ asbd->mFormatFlags = kAudioFormatFlagIsFloat;
+ asbd->mBitsPerChannel = 64;
+ break;
+ }
+
+ asbd->mChannelsPerFrame = channelCount;
+ asbd->mFramesPerPacket = 1;
+ asbd->mBytesPerFrame = ceilf(afGetVirtualFrameSize(file, track, 1));
+ asbd->mBytesPerPacket = asbd->mBytesPerFrame;
+
+ if (afGetVirtualByteOrder(file, track) == AF_BYTEORDER_BIGENDIAN)
+ asbd->mFormatFlags |= kAudioFormatFlagIsBigEndian;
+}
+
+OSStatus openOutput (AudioUnit *outputUnit)
+{
+ OSStatus status = noErr;
+ ComponentDescription description;
+ Component component;
+
+ description.componentType = kAudioUnitType_Output;
+ description.componentSubType = kAudioUnitSubType_DefaultOutput;
+ description.componentManufacturer = kAudioUnitManufacturer_Apple;
+ description.componentFlags = 0;
+ description.componentFlagsMask = 0;
+
+ component = FindNextComponent(NULL, &description);
+ if (component == NULL)
+ {
+ fprintf(stderr, "Could not find audio output device.\n");
+ exit(EXIT_FAILURE);
+ }
+
+ status = OpenAComponent(component, outputUnit);
+ if (status != noErr)
+ {
+ fprintf(stderr, "Could not open audio output device.\n");
+ exit(EXIT_FAILURE);
+ }
+
+ status = AudioUnitInitialize(*outputUnit);
+ if (status != noErr)
+ {
+ fprintf(stderr, "Could not initialize audio output device.\n");
+ exit(EXIT_FAILURE);
+ }
+
+ return status;
+}
+
+OSStatus fileRenderProc (void *inRefCon,
+ AudioUnitRenderActionFlags *inActionFlags,
+ const AudioTimeStamp *inTimeStamp,
+ UInt32 inBusNumber,
+ UInt32 inNumFrames,
+ AudioBufferList *ioData)
+{
+ AFfilehandle file = (AFfilehandle) inRefCon;
+ AFframecount framesToRead, framesRead;
+
+ framesToRead = inNumFrames;
+ if (framesToRead > BUFFER_FRAME_COUNT)
+ framesToRead = BUFFER_FRAME_COUNT;
+
+ framesRead = afReadFrames(file, AF_DEFAULT_TRACK,
+ buffer, framesToRead);
+ if (framesRead > 0)
+ {
+ ioData->mBuffers[0].mData = buffer;
+ ioData->mBuffers[0].mDataByteSize = framesRead *
+ afGetVirtualFrameSize(file, AF_DEFAULT_TRACK, 1);
+ }
+ else
+ isPlaying = 0;
+
+ return noErr;
+}
+
+OSStatus setupOutput (AudioUnit *outputUnit, AFfilehandle file)
+{
+ OSStatus status = noErr;
+ UInt32 size;
+ Boolean outWritable;
+
+ AudioStreamBasicDescription fileASBD, inputASBD, outputASBD;
+ AURenderCallbackStruct renderCallback;
+
+ /* Set virtual sample format to single-precision floating-point. */
+ afSetVirtualSampleFormat(file, AF_DEFAULT_TRACK, AF_SAMPFMT_FLOAT, 32);
+
+ /* Get ASBD for virtual sample format. */
+ getASBDForFile(file, AF_DEFAULT_TRACK, &fileASBD);
+
+ status = AudioUnitGetPropertyInfo(*outputUnit,
+ kAudioUnitProperty_StreamFormat, kAudioUnitScope_Output,
+ 0, &size, &outWritable);
+
+ status = AudioUnitGetProperty(*outputUnit,
+ kAudioUnitProperty_StreamFormat, kAudioUnitScope_Output,
+ 0, &outputASBD, &size);
+
+ if (outWritable)
+ {
+ outputASBD = fileASBD;
+
+ status = AudioUnitSetProperty(*outputUnit,
+ kAudioUnitProperty_StreamFormat, kAudioUnitScope_Output,
+ 0, &outputASBD, size);
+ }
+
+ inputASBD = fileASBD;
+
+ status = AudioUnitSetProperty(*outputUnit,
+ kAudioUnitProperty_StreamFormat, kAudioUnitScope_Input,
+ 0, &inputASBD, size);
+ if (status != noErr)
+ {
+ fprintf(stderr, "Could not set input stream format.\n");
+ exit(EXIT_FAILURE);
+ }
+
+ /*
+ Set the render callback to a procedure which will
+ read from the file.
+ */
+ renderCallback.inputProc = fileRenderProc;
+ renderCallback.inputProcRefCon = file;
+
+ status = AudioUnitSetProperty(*outputUnit,
+ kAudioUnitProperty_SetRenderCallback, kAudioUnitScope_Input, 0,
+ &renderCallback, sizeof (AURenderCallbackStruct));
+ if (status != noErr)
+ {
+ fprintf(stderr, "Could not set render callback.\n");
+ exit(EXIT_FAILURE);
+ }
+
+ return status;
+}
+
+int main (int argc, char **argv)
+{
+ AFfilehandle file;
+ AudioUnit outputUnit;
+
+ if (argc < 2)
+ {
+ fprintf(stderr, "usage: %s filename\n", argv[0]);
+ exit(EXIT_FAILURE);
+ }
+
+ file = afOpenFile(argv[1], "r", AF_NULL_FILESETUP);
+ if (file == AF_NULL_FILEHANDLE)
+ {
+ fprintf(stderr, "Could not open file '%s' for reading.\n", argv[1]);
+ exit(EXIT_FAILURE);
+ }
+
+ openOutput(&outputUnit);
+ setupOutput(&outputUnit, file);
+ AudioOutputUnitStart(outputUnit);
+
+ buffer = malloc(BUFFER_FRAME_COUNT *
+ afGetVirtualFrameSize(file, AF_DEFAULT_TRACK, 1));
+
+ while (isPlaying)
+ usleep(250000);
+
+ AudioOutputUnitStop(outputUnit);
+ AudioUnitUninitialize(outputUnit);
+ CloseComponent(outputUnit);
+
+ free(buffer);
+
+ afCloseFile(file);
+}
diff --git a/examples/power.c b/examples/power.c
new file mode 100644
index 0000000..01bfe5d
--- /dev/null
+++ b/examples/power.c
@@ -0,0 +1,220 @@
+/*
+ This program is derived from Chris Vaill's normalize program
+ and has been modified to use the Audio File Library for file
+ reading and audio data conversion.
+
+ Copyright (C) 2001, Silicon Graphics, Inc.
+ Copyright (C) 1999-2001, Chris Vaill
+
+ 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.
+*/
+
+/*
+ power.c
+
+ Calculate the power and peak amplitudes of an audio file.
+*/
+
+#ifdef HAVE_CONFIG_H
+#include <config.h>
+#endif
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <math.h>
+#include <audiofile.h>
+
+#ifndef TRUE
+#define TRUE 1
+#endif
+
+#ifndef FALSE
+#define FALSE 0
+#endif
+
+struct smooth
+{
+ double *buf;
+ int length, start, n;
+};
+
+static double get_smoothed_data (struct smooth *s)
+{
+ int i;
+ double smoothed;
+
+ smoothed = 0;
+ for (i = 0; i < s->n; i++)
+ smoothed += s->buf[i];
+ smoothed = smoothed / s->n;
+
+ return smoothed;
+}
+
+void print_power (char *filename);
+
+int main (int argc, char **argv)
+{
+ int i;
+
+ if (argc < 2)
+ {
+ fprintf(stderr, "usage: %s filename [more filenames...]\n",
+ argv[0]);
+ exit(EXIT_FAILURE);
+ }
+
+ for (i=1; i<argc; i++)
+ print_power(argv[i]);
+
+ return 0;
+}
+
+void print_power (char *filename)
+{
+ AFfilehandle file;
+ double *sums, *frames;
+ int channelCount, windowSize, frameCount;
+ int i, c;
+ struct smooth *powsmooth;
+ int winStart, winEnd;
+ int lastWindow = FALSE;
+ double pow, maxpow;
+
+ double level, peak, minSample = 1, maxSample = -1;
+
+ file = afOpenFile(filename, "r", NULL);
+ if (file == AF_NULL_FILEHANDLE)
+ {
+ fprintf(stderr, "Could not open file %s.\n", filename);
+ return;
+ }
+
+ channelCount = afGetChannels(file, AF_DEFAULT_TRACK);
+ windowSize = afGetRate(file, AF_DEFAULT_TRACK) / 100;
+ frameCount = afGetFrameCount(file, AF_DEFAULT_TRACK);
+
+ sums = calloc(channelCount, sizeof (double));
+ for (c=0; c<channelCount; c++)
+ sums[c] = 0;
+
+ frames = calloc(channelCount * windowSize, sizeof (double));
+
+ afSetVirtualSampleFormat(file, AF_DEFAULT_TRACK, AF_SAMPFMT_DOUBLE,
+ sizeof (double));
+
+ powsmooth = calloc(channelCount, sizeof (struct smooth));
+ for (c=0; c<channelCount; c++)
+ {
+ /* Use a 100-element (1 second) window. */
+ powsmooth[c].length = 100;
+ powsmooth[c].buf = calloc(powsmooth[c].length, sizeof (double));
+ powsmooth[c].start = 0;
+ powsmooth[c].n = 0;
+ }
+
+ winStart = 0;
+ winEnd = 0;
+ lastWindow = FALSE;
+ maxpow = 0;
+
+ do
+ {
+ winEnd = winStart + windowSize;
+
+ if (winEnd >= frameCount)
+ {
+ winEnd = frameCount;
+ lastWindow = TRUE;
+ }
+
+ afReadFrames(file, AF_DEFAULT_TRACK, frames, windowSize);
+
+ for (c=0; c<channelCount; c++)
+ {
+ sums[c] = 0;
+
+ for (i=0; i < winEnd - winStart; i++)
+ {
+ double sample;
+
+ sample = frames[i*channelCount + c];
+ sums[c] += sample*sample;
+
+ if (sample > maxSample)
+ maxSample = sample;
+ if (sample < minSample)
+ minSample = sample;
+ }
+ }
+
+ /* Compute power for each channel. */
+ for (c=0; c<channelCount; c++)
+ {
+ double pow;
+ int end;
+
+ pow = sums[c] / (winEnd - winStart);
+
+ end = (powsmooth[c].start + powsmooth[c].n) %
+ powsmooth[c].length;
+ powsmooth[c].buf[end] = pow;
+
+ if (powsmooth[c].n == powsmooth[c].length)
+ {
+ powsmooth[c].start = (powsmooth[c].start + 1) % powsmooth[c].length;
+ pow = get_smoothed_data(&powsmooth[c]);
+ if (pow > maxpow)
+ maxpow = pow;
+ }
+ else
+ {
+ powsmooth[c].n++;
+ }
+ }
+
+ winStart += windowSize;
+ } while (!lastWindow);
+
+ for (c = 0; c < channelCount; c++)
+ {
+ pow = get_smoothed_data(&powsmooth[c]);
+ if (pow > maxpow)
+ maxpow = pow;
+ }
+
+ free(sums);
+ free(frames);
+ for (c=0; c<channelCount; c++)
+ free(powsmooth[c].buf);
+ free(powsmooth);
+
+ level = sqrt(maxpow);
+
+ afCloseFile(file);
+
+ printf("file: %s\n", filename);
+
+ printf("level (dB): %f\n", 20 * log10(level));
+ printf("peak-: %f\n", minSample);
+ printf("peak+: %f\n", maxSample);
+
+ peak = abs(minSample);
+ if (peak < abs(maxSample))
+ peak = abs(maxSample);
+
+ printf("peak (dB): %f\n", 20 * log10(peak));
+}
diff --git a/examples/sgi.c b/examples/sgi.c
new file mode 100644
index 0000000..12346d2
--- /dev/null
+++ b/examples/sgi.c
@@ -0,0 +1,109 @@
+/*
+ Audio File Library
+
+ Copyright 1998-1999, Michael Pruett <michael@68k.org>
+
+ 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.
+*/
+
+/*
+ sgi.c
+
+ These routines are used in SGI-specific test programs.
+*/
+
+#ifdef HAVE_CONFIG_H
+#include <config.h>
+#endif
+
+#include <stdio.h>
+#include <unistd.h>
+
+#include <audiofile.h>
+
+#include <dmedia/audio.h>
+
+/*
+ Set the sample width of an audio configuration.
+*/
+void setwidth (ALconfig config, int sampleWidth)
+{
+ if (sampleWidth <= 8)
+ {
+ printf("setting width to 8\n");
+ alSetWidth(config, AL_SAMPLE_8);
+ }
+ else if (sampleWidth <= 16)
+ {
+ printf("setting width to 16\n");
+ alSetWidth(config, AL_SAMPLE_16);
+ }
+ else if (sampleWidth <= 24)
+ {
+ printf("setting width to 24\n");
+ alSetWidth(config, AL_SAMPLE_24);
+ }
+}
+
+/*
+ Set the sample format of an audio configuration.
+*/
+void setsampleformat (ALconfig config, int audioFileSampleFormat)
+{
+ if (audioFileSampleFormat == AF_SAMPFMT_TWOSCOMP)
+ {
+ printf("setting sample format to 2's complement\n");
+ alSetSampFmt(config, AL_SAMPFMT_TWOSCOMP);
+ }
+ else if (audioFileSampleFormat == AF_SAMPFMT_FLOAT)
+ {
+ printf("setting sample format to float\n");
+ alSetSampFmt(config, AL_SAMPFMT_FLOAT);
+ }
+ else if (audioFileSampleFormat == AF_SAMPFMT_DOUBLE)
+ {
+ printf("setting sample format to double\n");
+ alSetSampFmt(config, AL_SAMPFMT_DOUBLE);
+ }
+}
+
+/*
+ Set the sample rate of an audio port.
+*/
+void setrate (ALport port, double rate)
+{
+ int rv;
+ ALpv params;
+
+ rv = alGetResource(port);
+
+ params.param = AL_RATE;
+ params.value.ll = alDoubleToFixed(rate);
+
+ if (alSetParams(rv, &params, 1) < 0)
+ {
+ printf("alSetParams failed: %s\n", alGetErrorString(oserror()));
+ }
+}
+
+/*
+ Wait until the audio port has no more samples to play.
+*/
+void waitport (ALport port)
+{
+ while (alGetFilled(port) > 0)
+ sginap(1);
+}
diff --git a/examples/sgi.h b/examples/sgi.h
new file mode 100644
index 0000000..ebb6e5b
--- /dev/null
+++ b/examples/sgi.h
@@ -0,0 +1,53 @@
+/*
+ Audio File Library
+
+ Copyright 1998-1999, Michael Pruett <michael@68k.org>
+
+ 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.
+*/
+
+/*
+ sgi.h
+
+ These routines are used in SGI-specific test programs.
+*/
+
+#ifndef SGI_H
+#define SGI_H
+
+#include <dmedia/audio.h>
+
+/*
+ Set the sample width of an audio configuration.
+*/
+void setwidth (ALconfig config, int width);
+
+/*
+ Set the sample format of an audio configuration.
+*/
+void setsampleformat (ALconfig config, int width);
+
+/*
+ Set the sample rate of an audio port.
+*/
+void setrate (ALport port, double rate);
+
+/*
+ Wait until the audio port has no more samples to play.
+*/
+void waitport (ALport port);
+
+#endif
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-24 05:48:52 +0000