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292 discussions

Trying to use the MAD encoder on a SAM3S
by Simon Preuß 23 Jun '15

23 Jun '15

Hello there, I want to build a simple mp3 player. Because I have access to a SAM3S EK2 evaluation board and a SAM-ICE debugger I want to try and use the MAD encoder on a SAM3S (in order to later build my own board with a SAM3S and a proper 16 bit stereo audio DAC). Now while I do have some experience with programming the SAM3S using modules from the Atmel Software Framework, I have not used third party code before. If anyone here would be so kind and share their expertise with me to help me get this show on the road, I would very much appreciate it! This is what (little) I got so far: I have added all the MAD sources to my project (using Atmel Studio) and included the mad.h in my main source file. Looking through the sources, I noticed that in the mad.h, line 27 I should probably change FPM_INTEL to FPM_ARM. When I try to compile, I get an error in fixed.h saying that no FPM was defined. So I added #ifndef FPM_ARM #define FPM_ARM #endif #ifndef SIZEOF_INT #define SIZEOF_INT 4 #endif at the beginning of fixed.h (because after adding only the define for FPM_ARM, I got another error concerning SIZEOF_INT). Now when I compile, I get a lot of errors in inimdct_l_arm.s, most of them 'lo register required'. I have next to no experience with assembler programming so this leaves me with a large question mark over my head. What steps do I have to take to make the encoder available on my ARM? I hope I am not trying something completely stupid and please excuse any ignorance on my part. If anyone out there would be willing to help me, that would be awesome! Best regards, Simon

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Build failed on MacOS X Maverick
by Raymond Blum 17 Dec '13

17 Dec '13

Hi all I'm trying to build madlib under Mavericks (OS 10.9) using XCode 5.02 and after .configure appears to succeed, I am getting the following error from make *error: **unknown target CPU 'i486'* The compile cmd line from make is: gcc -DHAVE_CONFIG_H -I. -I. -I. -DFPM_INTEL -DASO_ZEROCHECK -Wall -march=i486 -g -O -fforce-mem -fforce-addr -fthread-jumps -fcse-follow-jumps -fcse-skip-blocks -fexpensive-optimizations -fregmove -fschedule-insns2 -fstrength-reduce -MT version.lo -MD -MP -MF .deps/version.Tpo -c version.c -fno-common -DPIC -o .libs/version.o I think that I see what the problem us on the surface, .configure is generating a machine arch of i486 but gcc does not know that target type, less clear is why and what to do about it. Help appreciated! ---Raymond --- Empathy is the realization that another creature is self aware

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Failed to Compile lib-mad from source
by Anshul 23 Jul '13

23 Jul '13

-------- Original Message -------- Subject: Failed to Compile lib-mad from source Date: Tue, 23 Jul 2013 14:47:44 +0530 From: Anshul <anshul.maheshwari(a)einfochips.com> To: mad-user(a)lists.mars.org -------- Original Message -------- Subject: Failed to Compile lib-mad from source Date: Tue, 23 Jul 2013 14:39:32 +0530 From: Anshul <anshul.maheshwari(a)einfochips.com> To: mad-user(a)lists.mars.org HI I was trying to compile libmad-0.15.0b or libmad-0.15.1b, both of them failed on my computer. Actually -fforce-mem was deprecated option to gcc and has been removed, so I feel There is need to update configure.ac error was (sed -e '1s|.*|/*|' -e '1b' -e '$s|.*| */|' -e '$b' \ -e 's/^.*/ *&/' ./COPYRIGHT; echo; \ echo "# ifdef __cplusplus"; \ echo 'extern "C" {'; \ echo "# endif"; echo; \ if [ ".-DFPM_INTEL" != "." ]; then \ echo ".-DFPM_INTEL" | sed -e 's|^\.-D|# define |'; echo; \ fi; \ sed -ne 's/^# *define *$HAVE_.*_ASM$.*/# define \1/p' \ config.h; echo; \ sed -ne 's/^# *define *OPT_$SPEED\|ACCURACY$.*/# define OPT_\1/p' \ config.h; echo; \ sed -ne 's/^# *define *$SIZEOF_.*$/# define \1/p' \ config.h; echo; \ for header in version.h fixed.h bit.h timer.h stream.h frame.h synth.h decoder.h; do \ echo; \ sed -n -f ./mad.h.sed ./$header; \ done; echo; \ echo "# ifdef __cplusplus"; \ echo '}'; \ echo "# endif") >mad.h make all-recursive make[1]: Entering directory `/home/anshul/work/libmad-0.15.0b' make[2]: Entering directory `/home/anshul/work/libmad-0.15.0b' if /bin/sh ./libtool --mode=compile gcc -DHAVE_CONFIG_H -I. -I. -I. -DFPM_INTEL -DASO_ZEROCHECK -Wall -march=i486 -g -O -fforce-mem -fforce-addr -fthread-jumps -fcse-follow-jumps -fcse-skip-blocks -fexpensive-optimizations -fregmove -fschedule-insns2 -fstrength-reduce -MT version.lo -MD -MP -MF ".deps/version.Tpo" \ -c -o version.lo `test -f 'version.c' || echo './'`version.c; \ then mv -f ".deps/version.Tpo" ".deps/version.Plo"; \ else rm -f ".deps/version.Tpo"; exit 1; \ fi mkdir .libs gcc -DHAVE_CONFIG_H -I. -I. -I. -DFPM_INTEL -DASO_ZEROCHECK -Wall -march=i486 -g -O -fforce-mem -fforce-addr -fthread-jumps -fcse-follow-jumps -fcse-skip-blocks -fexpensive-optimizations -fregmove -fschedule-insns2 -fstrength-reduce -MT version.lo -MD -MP -MF .deps/version.Tpo -c version.c -fPIC -DPIC -o .libs/version.lo gcc: error: *unrecognized command line option '-fforce-mem'* make[2]: *** [version.lo] Error 1 make[2]: Leaving directory `/home/anshul/work/libmad-0.15.0b' make[1]: *** [all-recursive] Error 1 make[1]: Leaving directory `/home/anshul/work/libmad-0.15.0b' make: *** [all] Error 2 I am trying to compile by removing -fforce-mem from configure.ac any better idea are welcomed. Thanks Anshul "Sorry if my sentence look arrogant, my english is bad" HI I tried to remove *-fforce-mem* and apply autoreconf but by that my bash itself crash. I am using OpenSuse 12.3 linux 3.7.10-1.16-pae proccessor Intel thanks Anshul HI I was able to compile source code after removing *-fforce-mem *I have to to some additional steps other than just removing *-fforce-mem *I had to run libtoolize before i could complile, because only autoreconf does not update libtool, I dont Know what version You people use but for me i required macro directory * confure.ac Change *32c32 < --- > AC_CONFIG_MACRO_DIR([m4]) 143d142 < optimize="$optimize -fforce-mem" * Makefile.am Change *23a24 > ACLOCAL_AMFLAGS = -I m4 * Please help me if there is any other way than this work around. *Thanks Anshul --------------------------------------------------------------------------------------------- Notice: This message has been scanned by Trend Micro Mail Security scanner and is believed to be clean ---------------------------------------------------------------------------------------------

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libmad cache
by jon 26 Apr '13

26 Apr '13

Hi, i'm trying to run the code on a empeg player. All seems to work ok, but I need to modify the sources a bit and I have to admit I don't fully (ok, mostly at all !) understand it. What I need to do is get madlib to read a fixed size chunk of mp3 data, then when playback is N seconds before the end of that chunk I want it to read the next chunk. IE I am trying read ahead to work round a problem with disk spin up time on the device. Strictly speaking the code does not need a cache, it can do the read twice and throw the data from the first one away - all that matters is that playback does not stop while the disk spins up, IE read of the real data must never block :-) I'm using a slightly modified madplayer at the moment linked against an unmodified libmad. Any advice? Thanks, Jon

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estimate of output size?
by Chris Korda 27 Feb '13

27 Feb '13

Hi, Is there any method to obtain the size of the expected output from a given MP3 file? Even an estimate would be better than nothing. I need to know the size in order to display a progress bar, and also performance will improve considerably if I can allocate the destination array in advance instead of repeatedly growing it. I'm using libmad in Windows XP/Vista/7 with Visual Studio versions 6.0 and 9.0. Cheers, Chris Korda http://waveshop.sourceforge.net/

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Issues installing MAD
by Ron Karroll 22 Feb '12

22 Feb '12

Quick question, has anyone else encountered the issue when installing MAD hat it can't find the libid3tag library even though you've already installed it? This occurs even after using setting LDFLAGS to look in the proper directory. Any suggestions? Sent from my iPad

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Fwd: madplay
by Neil Jones 22 Sep '10

22 Sep '10

Hi, Im trying to play mp3's on a new arch using madplay and alsa. If I pipe the output of madplay into alsa it works fine eg: madplay -R48000 -o wav:- file.mp3 | aplay -cc but if I invoke it directly: madplay - R48000 file.mp3 it sounds horrible, like its clipping and there lots of white/pinknoise mixed in. I have tried attenuating the output (-a -10) and check alasa-mixer settings that doesn't help. I also get the same effect when playing audio via mplayer (using libmad) I have no FPU so cant try mpg123 for instance. Any help or hints welcome. Cheers Neil

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MinGW-w64 Compatibility
by Hoyt, David 18 Sep '10

18 Sep '10

Hello, I'm compiling libid3tag w/ 32-bit GCC 4.5.1 from MinGW-w64 on Windows 7 64-bit and the shared lib build fails due to missing symbols. If you inspect it a bit closer, it fails b/c it's trying to link with a main function (WinMain@16) somewhere and since it's a shared lib, there is none. The following allowed the shared lib to compile and install: make "libid3tag_la_LIBADD=-no-undefined -shared" I'm just letting you know in case you know how/where to make the fix (sorry, but I don't know). Thanks, - David Hoyt

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mad_frame_decode and libao
by Adam Magaluk 27 May '10

27 May '10

Hello List, Im trying to get my program running, im decoding an mp3 frame by frame with mad_frame_decode. Ive got it to the point where it just outputs the decoded mp3 to console. But thats not very helpful how would I hook it up to libao ao_play or anyother output library?? Running on Linux Debian x86 Thanks for the help

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Problem with madplay installation
by William Goldsmith 13 Dec '09

13 Dec '09

Hi there, I have successfully (I think) installed libmad-015.1b and libid3tag-0.15.1b. But when I try to install configure exits with an error: id3tag.h was not found you must first install libid3tag before you can build this package I'm confused. Any help would be appreciated. I'm running CentOS 5 thanks -bg ----- Bill Goldsmith Radio Paradise www.radioparadise.com

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