ref: 64d81b4c12296210cca712ca7ad49e5cc63477b2
dir: /msvc9/Readme.txt/
This directory includes hand-crafted project files for building SoX under
MSVC9. The project files may be replaced by expanding CMAKE support in the
future, but for now, this is the easiest way to build SoX with MS Visual C++.
The resulting sox.exe has support for all SoX features except magic, ffmpeg,
and pulseaudio. LAME (libmp3lame.dll or lame_enc.dll), MAD (libmad.dll or
cygmad-0.dll), libsndfile (libsndfile-1.dll) and AMR support (libamrnb-3.dll,
libamrwb-3.dll) are loaded at runtime if they are available.
How to build:
1. Check out the SoX CVS code into a directory named sox.
2. Extract the source code for the other libraries next to the sox
directory. Remove the version numbers from the directory names.
-- flac-1.2.1.tar.gz extracted into directory flac
-- lame-398-2.tar.gz extracted into directory lame
-- libid3tag-0.15.1b.tar.gz extracted into directory libid3tag
-- libmad-0.15.0b.tar.gz extracted into directory libmad
-- libogg-1.1.4.tar.gz extracted into directory libogg
-- libpng-1.2.39-no-config.tar.gz extracted into directory libpng
-- libsndfile-1.0.20.tar.gz extracted into directory libsndfile
-- libvorbis-1.2.3.tar.gz extracted into directory libvorbis
-- speex-1.2rc1.tar.gz extracted into directory speex
-- wavpack-4.50.1.tar.gz extracted into directory wavpack
-- zlib-1.2.3.tar.gz extracted into directory zlib
3. Open the sox\msvc9\SoX.sln solution.
4. If any of the above libraries are not available or not wanted, adjust the
corresponding settings in the soxconfig.h file (in the LibSoX project inside
the Config Files folder) and remove the corresponding project from the
solution.
5. Build the solution.
6. The resulting executable files will be in sox\msvc9\Debug or
sox\msvc9\Release. The resulting sox.exe will dynamically link to
libmp3lame.dll, libmad.dll, libsndfile-1.dll, libamrnb-3.dll, and
libamrwb-3.dll if they are available, but will run without them (though the
corresponding features will be unavailable if they are not present).
Points to note:
- The libsndfile-1.0.20.tar.gz package does not include the sndfile.h header
file. Normally, before compiling libsndfile, you would create sndfile.h
(either by processing it via autoconf, by downloading a copy, or by renaming
sndfile.h.in). However, this SoX solution includes its own version of
sndfile.h, so you should not create a sndfile.h under the libsndfile folder.
To repeat: you should extract a clean copy of libsndfile-1.0.20.tar.gz, and
should not add, process, or rename any files.
- The solution includes an experimental effect called speexdsp that uses the
speex DSP library. This does not yet enable any support for the speex file
format or speex codec. The speexdsp effect is simply an experimental effect
to make use of the automatic gain control and noise filtering components that
are part of the speex codec package. Support for the speex codec may be added
later.
- The included libsox project enables OpenMP support. You can disable this
in the libsox project properties under Configuration Properties, C/C++,
Language, OpenMP support. If you don't disable it, you will need
vcomp90.dll and Microsoft.VC90.OpenMP.manifest either installed on your
machine or copied into the directory next to sox.exe. If you have OpenMP
support in your copy of Visual Studio, these files can be found here:
c:\Program Files\Microsoft Visual Studio 9.0\
vc\redist\x86\Microsoft.VC90.OPENMP
Note that some editions of Visual Studio might not include OpenMP support.
- The included projects do not enable SSE2. You can enable this in the project
properties under Configuration Properties, C/C++, Code Generation, Enable
Enhanced Instruction Set. Note that some editions of Visual Studio might
not include Enhanced Instruction Set support.
- The included projects set the floating-point model to "fast". This means
that the compiler is free to optimize floating-point operations. For
example, the compiler might optimize the expression (14.0 * x / 7.0) into
(x * 2.0). In addition, the compiler is allowed to leave expression results
in floating-point registers to store temporary values instead of rounding
each intermediate result to a 32-bit or 64-bit value. In some cases, these
optimizations can change the results of floating-point calculations. If you
need more precise results, you can change this optimization setting can be
changed to one of the other values. The "precise" setting avoids any
optimization that might change the result (preserves the order of all
operations) but keeps optimizations that might give more accurate results
(such as using more precision than necessary for intermediate values if doing
so results in faster code). The "strict" setting avoids any optimization that
might change the result in any way contrary to the C/C++ standard and rounds
every intermediate result to the requested precision according to standard
floating-point rounding rules. You can change this setting in the project
properties under Configuration Properties, C/C++, Code Generation, Floating
Point Model.