- uses LAME library (https://lame.sourceforge.io/)
- supports encoding multiple files using pthread by putting input in directory path
- works on Linux (x86_64), Windows 10(x86), MinGW system
- Linux, MinGW: make
- Windows: build by Microsoft Visual Studio 2019 project
- Some systems like fedora, centos, Amazon Linux may require glibc-static library.
$ dnf install glibc-static
or
$ sudo yum install glibc-static- If arch does not match,
. build lame static library and install or copy the file(libmp3lame.a) to ./lib
- Use Microsoft Visual Studio 2019 solution/project files - MP3enc_cpp.sln.
- When you build libmp3lame library,
. as recommended in README, use nmake instead of Visual Studio project.
. this needs nasm for build (https://www.nasm.us/pub/nasm/releasebuilds/2.14.02/win64/) as it assumes nasm is available.
#__ readme ____________________________________________________________________
# nmake -f Makefile.MSVC
# -> build lame, but not mp3x
# -> use Robert's code modifications
# -> assume MSVC 6.0 compiler available
# -> assume NASM available
# -> assemble MMX code with NASM
# -> no compiler warnings
# -> use single precision float- and it needs a modification on its filename and to add the installation directory(default: C:\Program Files\NASM) to PATH.
diff --git a/Makefile.MSVC b/Makefile.MSVC
index 6538911..527a9a6 100644
--- a/Makefile.MSVC
+++ b/Makefile.MSVC
@@ -544,7 +544,7 @@ ASM_OBJ = $(ASM_OBJ) \
.SUFFIXES : .nas
.nas.obj:
@echo $<
- @nasmw -f $(OFF) -i libmp3lame/i386/ -DWIN32 $< -o $@
+ @nasm -f $(OFF) -i libmp3lame/i386/ -DWIN32 $< -o $@
CC_SWITCHES = $(CC_SWITCHES) /DHAVE_NASM
ASM_OBJ = $(ASM_OBJ) \-
pthread headers(.\pthread_h\*.h) should be placed in include directory of either Windows SDK(C:\Program Files (x86)\Windows Kits\10\Include\{VERSION}\um) or MSVC(C:\Program Files (x86)\Microsoft Visual Studio\2019\Community\VC\Tools\MSVC\14.24.28314\include).
-
In case that you encounter a link error on building pthread-w32 library,
. to build a static library of pthread, you need to modify Makefile - '/MD' in $(XCFLAGS) to '/MT'.
. if timespec definition duplicated, add '&& !defined(_INC_TIME)' to pthread.h
#if !defined(HAVE_STRUCT_TIMESPEC) && !defined(_INC_TIME)
#define HAVE_STRUCT_TIMESPEC
#if !defined(_TIMESPEC_DEFINED
#define _TIMESPEC_DEFINED
struct timespec {
time_t tv_sec;
long tv_nsec;
};
#endif /* _TIMESPEC_DEFINED */
#endif /* HAVE_STRUCT_TIMESPEC */MP3enc_cpp <input_directory | input_filename [-o <output_filename>]> [OPTIONS]
Options:
-h Show help
-r Search subdirectories recursively
-q <mode> Set quality level
fast fast encoding with small file size
standard standard quality - default
best best quality
-v Verbose detail
Example:
MP3enc_cpp input.wav -o output.mp3
MP3enc_cpp wav_dir/ -r -q fast -v- To see technical detail, open ./html/index.html document generated through Doxygen