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Compile error
by hank.jan＠billionton.com.tw 12 Aug '03

12 Aug '03

Hi, I encountered some trouble when I did the cross compile. While compiling MAD 0.14.2b with the following setting: export CC=arm-linux-gcc export LD=arm-linux-ld ./configure --host=arm-linux --enable-fpm=arm It works successfully. Then I ran "make", but I got a long list of error message: /bin/sh ./libtool --mode=compile gcc -DHAVE_CONFIG_H -I. -I. -I. -DFPM_ARM -Wall -g -O -fforce-mem -fforce-addr -fthread-jumps -fcse-follow-jumps -fcse-skip-blocks -fexpensive-optimizations -fregmove -fschedule-insns2 -fstrength-reduce -finline-functions -c synth.c gcc -DHAVE_CONFIG_H -I. -I. -I. -DFPM_ARM -Wall -g -O -fforce-mem -fforce-addr -fthread-jumps -fcse-follow-jumps -fcse-skip-blocks -fexpensive-optimizations -fregmove -fschedule-insns2 -fstrength-reduce -finline-functions -c synth.c -o synth.o synth.c: In function `dct32': synth.c:218: warning: asm operand 2 probably doesn't match constraints synth.c:218: warning: asm operand 3 probably doesn't match constraints synth.c:218: inconsistent operand constraints in an `asm' synth.c:219: inconsistent operand constraints in an `asm' synth.c: In function `synth_full': synth.c:611: warning: asm operand 2 probably doesn't match constraints synth.c:611: warning: asm operand 3 probably doesn't match constraints synth.c:611: inconsistent operand constraints in an `asm' synth.c:642: inconsistent operand constraints in an `asm' synth.c: In function `synth_half': synth.c:748: warning: asm operand 2 probably doesn't match constraints synth.c:748: warning: asm operand 3 probably doesn't match constraints synth.c:748: inconsistent operand constraints in an `asm' synth.c:780: inconsistent operand constraints in an `asm' make[2]: *** [synth.lo] Error 1 make[2]: Leaving directory `/root/player/mad-0.14.2b/libmad' make[1]: *** [all-recursive] Error 1 make[1]: Leaving directory `/root/player/mad-0.14.2b' make: *** [all-recursive-am] Error 2 (I don't list the whole message, because it is too long....) Does any one know what's going on? Thanks in advance.

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Cross compiling libmad for sh-4
by Alex Bradbury 11 Aug '03

11 Aug '03

I have a working sh-elf build chain set up using gcc3.3.1, binutils 2.12.1 and newlib 1.9.0. I want to cross-compile the libmad library using this (so I can use it with the DC port of scummvm). The problem is that the configure script fails: checking for C compiler default output... configure: error: C compiler cannot create executables So I'm not really sure how to go about doing this cross compile successfully - can anyone help me? Alex Bradbury

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Code Size Estimation of Minimad
by Yeh You-Ying(EnE) 05 Aug '03

05 Aug '03

Greeting, I've tried to make a minimal minimad.exe. I just let the minimad.exe to deal with MPEG-I Layer 3 source. Now the code size is about 92K. I used exe2bin,provided by Microsoft, to remove the execution header, but failed. The exe2bin seems to only handle executions which are gernerated by assembler. Therefore so far I do not know the code size of this minimal decode engine. Any one know how to get the estimation ? Any one has the reference data ? Thanks a lot.

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Fwd: Re: [mad-dev] Re: How to know the frequency of a frame
by Shiming Dong 01 Aug '03

01 Aug '03

Note: forwarded message attached. __________________________________ Do you Yahoo!? Yahoo! SiteBuilder - Free, easy-to-use web site design software http://sitebuilder.yahoo.com

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Re: How to know the frequency of a frame
by armin.gerritsen＠philips.com 01 Aug '03

01 Aug '03

mad-dev-request(a)lists.mars.org wrote: > Message: 1 > Date: Wed, 30 Jul 2003 16:56:15 -0700 (PDT) > From: Shiming Dong <dong_sm(a)yahoo.com> > To: mad-dev(a)lists.mars.org > Subject: [mad-dev] How to know the frequency of a frame > > --0-1603577723-1059609375=:7610 > Content-Type: text/plain; charset=us-ascii > > Hi there: > > I have one question: I was supposed to implement a program to detect > a specific marker tone. But my problem is how to know the frequency > of each frame? > > Thank you! > > shiming I guess you mean the samplerate? For instance 44,1kHz. In that case it is easy. Once you have decoded a frame, at some point you will synthesise it to PCM samples. struct mad_frame myFrame ; struct mad_synth mySynth ; [...lots of code...] mad_synth_frame( &mySynth, &myFrame ) ; After that mySynth.pcm.samplerate will contain the samplerate. For instance 44100 for 44,1kHz. Regards, Armin

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How to know the frequency of a frame
by Shiming Dong 31 Jul '03

31 Jul '03

Hi there: I have one question: I was supposed to implement a program to detect a specific marker tone. But my problem is how to know the frequency of each frame? Thank you! shiming --------------------------------- Do you Yahoo!? Yahoo! SiteBuilder - Free, easy-to-use web site design software

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Configure error
by hank.jan＠billionton.com.tw 31 Jul '03

31 Jul '03

Hi, I encounted some trouble when I did the cross compile. I am not familiar with linux environment. So I may ask a stupid question. Any help will be appreciated. I installed the arm cross compiler toolchian, and tried to compile madplay. But when I ran ./configure, I met an error with the message : checking whether byte ordering is bigendian... configure: error: can not run test program while cross compiling. I have ever succeeded the configuration, but I am not sure what to do. Can anybody help me? Thanks in advance.

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Minimad: output PCM data overflow ?
by Yeh You-Ying 31 Jul '03

31 Jul '03

mad-dev-request(a)lists.mars.org mentioned: > Could be, but in my experience even something as simple as: > >signed int MAD_SimpleScale( mad_fixed_t sample ) >{ > // Round > sample += ( 1L << (MAD_F_FRACBITS - 16) ) ; > > // Clip > if ( sample >= MAD_F_ONE ) > sample = MAD_F_ONE - 1 ; > else > if ( sample < -MAD_F_ONE ) > sample = -MAD_F_ONE ; > > // Quantise > return sample >> (MAD_F_FRACBITS + 1 - 16) ; >} > > >... already produces nice results. >If you forget about the clipping though, the quality s#cks! >I'm not sure, but I believe the standard mad-example 'forgets' the clipping. >(Could be wrong though!) >I don't know what minimad.c uses ... > >If that is not it, check the compiler settings. Some very agressive >optimisations may cause rounding-errors, although this usually occures with >floating point numbers, and MAD's strength is that it doesn't use them ... > >I know, I'm just quessing, but maybe this helps somehow. > >Regards, > >Armin > > > > Dear Armin, Thanks for your information. I've check the scale function in minimad.c and it's the same as the one you mentioned. And I 've tried several ways to change the compiler flags, but still no work. I used dist10 decoder to generate another PCM raw data with the same demo.mp3 I also used Sound Forge to analyze these two PCM raw data. The one generated by minimad seems to be overflow in sample value, the maximum and minimun value are -32768 and 32768 (2^16). Any hint about this ? I can email to statistic information to you if you'd like. Thnaks in advance. Yeh You-Ying

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Re: [mad-dev] Palm OS port
by Boris Raicheff 29 Jul '03

29 Jul '03

>From: Jesse McGrew <jmcgrew(a)hansprestige.com> >To: mad-dev(a)lists.mars.org >Subject: [mad-dev] Palm OS port >Date: Mon, 28 Jul 2003 21:19:48 -0700 > >I want to write a streaming audio player for Palm OS, so I'm thinking of >trying to port libmad to Palm > OS. Newer Palms have ARM processors but >user apps are mostly emulated 68k code, so theoretically > it'll be >possible as long as I can convert the whole library to an "ARMlet". > >I don't want to reinvent the wheel or step on anyone's toes, though. Is >there already a Palm port in > progress? Yes, there is. In fact, there are at least 4 people (the ones that I know of) working on different Palm OS ports. Unfortunately, your idea to convert the whole library to an ARMlet is not easy at all. So you won't be able to just include the sources in your Codewarrior or whatever you're using, and hit compile. Don't forget the 64k limit. There are many issues to deal with (like the lookup tables, which are too large, and the struct alignment thing, the name a few). Regards, Boris Raicheff _________________________________________________________________ MSN 8 with e-mail virus protection service: 2 months FREE* http://join.msn.com/?page=features/virus

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Re: PCM output sample overflow ?
by Yeh You-Ying 29 Jul '03

29 Jul '03

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