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682 discussions

Re: [mad-dev] how build a standalone mad for arm?
by acen10＠263.net 15 Mar '02

15 Mar '02

hi, Guenther Sohler,did you have any experience on it ? first step,i wanna modify the source code ,make mad can run and decode mp3 whithout system support like calling system function . then next step i will build executable for arm. that is appropriate and feasible? on 2002-03-15 08:17:00 Guenther Sohler wrote： >I presume, you'll gonna construct an car mp3 player. this is a good idea. >Please inform me about any details. i am also interested >On 15-Mar-2002 acen10(a)263.net wrote: >> hi all, >> how can i make a standalone player on arm7tdmi without OS? >> i wanna play mp3 on arm cpu,and porting a uclinux to it is too complex for >> me.furthermore,os itself consume resources and i am afraided the cpu cannt >> deal with mp3 decoding.but how do it >> ?i am newbie and any advice and help will be appreciated >> >> acen10(a)263.net >> > >Guenther Sohler > >NewLogic Technologies AG >Millennium Park 6 >A-6890 Lustenau > Phone: +43-5577-62000-507 >E-Mail: guenther.sohler(a)newlogic.com Fax: +43-5577-62000-988 acen10(a)263.net

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Re: [mad-dev] Compiling for ARM
by Gareth Bransby 14 Mar '02

14 Mar '02

> 1) > When compiling minimad normally i do "gcc minmad.c -o mimimad -lmad". -lmad > being the bit that tells gcc to use libmad dunring linking. How does -lmad > relate to /usr/local/lib/libmad.a? When i try this using the cross compiler > it fails. More specicfcally I get : /data/lart/cross/arm-linux/bin/ld: cannot find -lmad collect2: ld returned 1 exit status

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Re: [mad-dev] Compiling for ARM
by Jeroen T 14 Mar '02

14 Mar '02

Hi. A general question about the ARM. What byte order is used in memory for 16 and 32 bit value? Is it high-lowbyte or low-highbyte. I have problems with a MIPS. Decoding works, huffman doesn't give any errors, but the output is not what I expect... Jeroen >From: Guenther Sohler <guenther.sohler(a)newlogic.com> >Reply-To: Guenther Sohler <guenther.sohler(a)newlogic.com> >To: Gareth <the_african(a)hotmail.com> >CC: mad-dev(a)lists.mars.org >Subject: Re: [mad-dev] Compiling for ARM >Date: Thu, 14 Mar 2002 07:48:11 +0100 (MET) > > >On 14-Mar-2002 Gareth wrote: > > Hi, > > > > I have succesfully cross compiled libmad for ARM and now it is time for > > compiling minimad for ARM as well. I have 2 question really > > > > 1) > > When compiling minimad normally i do "gcc minmad.c -o mimimad -lmad". >-lmad > > being the bit that tells gcc to use libmad dunring linking. How does >-lmad > > relate to /usr/local/lib/libmad.a? When i try this using the cross >compiler > > it fails. >Hmm - In My system there does not exist libmad.a in the libmad directory >There just exist a libmad.la >Wha I did, I gave the linker a file in .libs. i dont remember the name, >but i >gave it without the -l option(for library) >Is there a way to make a shared library versin of libmad ? > >Do you need the capability to start from a defined position in the mp3 file >? > _________________________________________________________________ Send and receive Hotmail on your mobile device: http://mobile.msn.com

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Re: [mad-dev] MIPS VR4111 implementation of MAD
by Jeroen T 13 Mar '02

13 Mar '02

I don't know.... The only thing I know is that 16 and 32 bits values on the MIPS are stored using high to low byte in memory and the Intel low to high byte in memory. Can this be a problem? Does MAD use direct way to get bytes from a 16 bits or 32 bits value? Jeroen >From: Guenther Sohler <guenther.sohler(a)newlogic.com> >Reply-To: Guenther Sohler <guenther.sohler(a)newlogic.com> >To: Jeroen <jeroen_t(a)hotmail.com> >CC: mad-dev(a)lists.mars.org >Subject: Re: [mad-dev] MIPS VR4111 implementation of MAD >Date: Wed, 13 Mar 2002 15:12:23 +0100 (MET) > >There might be a problem with the big endian of the machine ? >Do you use seeking in your app ? > >On 13-Mar-2002 Jeroen wrote: > > Hi. > > > > I asked before, and thanks for all the anwers. I still didn't have any > > success on porting MAD to a MIPS VR4111. It compiles perfectly, bus the > > output of the decoder looks like some audio, but it isn't what I >expected... > > Anyone here who did porting to a MIPS before? > > > > Thanks, > > > > Jeroen > > > >Guenther Sohler > >NewLogic Technologies AG >Millennium Park 6 >A-6890 Lustenau > Phone: +43-5577-62000-507 >E-Mail: guenther.sohler(a)newlogic.com Fax: +43-5577-62000-988 > _________________________________________________________________ Send and receive Hotmail on your mobile device: http://mobile.msn.com

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Re: [mad-dev] MIPS VR4111 implementation of MAD
by Jeroen T 13 Mar '02

13 Mar '02

And seeking? What do you mean with that? I just decode a complete MP3 and write it back to a file. Jeroen >From: Guenther Sohler <guenther.sohler(a)newlogic.com> >Reply-To: Guenther Sohler <guenther.sohler(a)newlogic.com> >To: Jeroen <jeroen_t(a)hotmail.com> >CC: mad-dev(a)lists.mars.org >Subject: Re: [mad-dev] MIPS VR4111 implementation of MAD >Date: Wed, 13 Mar 2002 15:12:23 +0100 (MET) > >There might be a problem with the big endian of the machine ? >Do you use seeking in your app ? > >On 13-Mar-2002 Jeroen wrote: > > Hi. > > > > I asked before, and thanks for all the anwers. I still didn't have any > > success on porting MAD to a MIPS VR4111. It compiles perfectly, bus the > > output of the decoder looks like some audio, but it isn't what I >expected... > > Anyone here who did porting to a MIPS before? > > > > Thanks, > > > > Jeroen > > > >Guenther Sohler > >NewLogic Technologies AG >Millennium Park 6 >A-6890 Lustenau > Phone: +43-5577-62000-507 >E-Mail: guenther.sohler(a)newlogic.com Fax: +43-5577-62000-988 > _________________________________________________________________ Join the worlds largest e-mail service with MSN Hotmail. http://www.hotmail.com

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MIPS VR4111 implementation of MAD
by Jeroen 13 Mar '02

13 Mar '02

Hi. I asked before, and thanks for all the anwers. I still didn't have any success on porting MAD to a MIPS VR4111. It compiles perfectly, bus the output of the decoder looks like some audio, but it isn't what I expected... Anyone here who did porting to a MIPS before? Thanks, Jeroen

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Problem with MADPLAYER
by Guenther Sohler 13 Mar '02

13 Mar '02

Hallo List, i have written a mid level access class for mad mp3 decoder engine. It can open, close, read and seek within a mp3 file. But unconfortunately the seek function does not work. The seek function just reads the header of each frame to be faster. Somehow it seeks 19.8x more far than specified. Could anybode look into the code and see whats wrong. thanx rds guenther

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Re: [mad-dev] Cross compiling libmad for ARM
by Gareth Bransby 08 Mar '02

08 Mar '02

I had a go at what you suggested but this had no effect, it came up with exactly the same error. From what i can see from the error, it is looking in the linux/ directory in the libmad/ source directory, not in /usr/src/linux. I tried doing what you suggested but making the link in the libmad directory rather than in /usr/src, so now i have a link mad-0.13.0b/libmad/linux -> /usr/local/arm/gnu/release/arm-linux/include. Now it finds errno.h ok but generates different errors decoder.c: In function 'mad_decoder_finish': decoder.c:91 'EINTR' undeclared (first use in this function) decoder.c:91 (Each undeclared identifier is reported only once for each function it apears in.) decoder.c In function'send_io': decoder.c:120 'EINTR' undeclared (first use in this function) decoder.c In function'recieve_io': decoder.c:142 'EINTR' undeclared (first use in this function) decoder.c:145 'EAGAIN' undeclared (first use in this function) make: *** [decoder.lo] error 1 I am wondering are there some required files that are needed for cross compiling that i have not installed? Thanks On Tue, 5 Mar 2002 13:45:55 +0800 "davidlee" <davidlee(a)gv.com.tw> wrote: > Dear Gareth: > Maybe do could do this > 1. logon as root > 2. cd /usr/src > 3. rm linux > 4. ln -s arm-linux(or any path that you installed Arm Linux enviroment) ./linux > > Try again , Good lucky. > > > ----- Original Message ----- > From: "Gareth" <g.c.bransby-99(a)student.lboro.ac.uk> > To: "Gad Hayisraeli" <gad(a)syete.co.il> > Cc: "Mad Dev List" <mad-dev(a)lists.mars.org> > Sent: Thursday, February 28, 2002 7:56 PM > Subject: RE: [mad-dev] Cross compiling libmad for ARM > > > > Thanks for the help! > > > > I had a go at doing the CC=... and RANLIB=... on the same line as the > > ./configure as suggested. This seems to have the dedsired effect, the > > configure script reports that gcc is a cross compiler and when i look at > > the Makefile all the paths are pointing to the right place. i.e. the > > cross compiler i installed. > > > > Now when i come to make, it runs for a bit but then reports the error : > > > > /usr/local/arm/gnu/release/lib/gcc-lib/arm-linux/2.95.3/../../../../arm-linux/include/bits/errno.h:25: linux/errno.h: No such file or directory > > > > Why is the file bits/errno.h looking for another file of the same name? > > Is this meant to be an ARM specific errno.h? I did a search for this > > file and came up with loads : > > > > /usr/include/asm/errno.h > > /usr/include/linux/errno.h > > /usr/include/bits/errno.h > > /usr/include/errno.h > > /usr/include/sys/errno.h > > /usr/local/arm/gnu/release/arm-linux/include/bits/errno.h > > /usr/local/arm/gnu/release/arm-linux/include/errno.h > > /usr/local/arm/gnu/release/arm-linux/include/sys/errno.h > > /usr/src/linux-2.4.3/include/asm-i386/errno.h > > /usr/src/linux-2.4.3/include/linux/errno.h > > > > Which one is it looking for and how do i tell it to use that specific > > one? > > > > > > On 27 Feb 2002 21:24:37 +0200, Gad Hayisraeli wrote: > > > Try this > > > Shell> rm -f config.cache > > > Shell> CC=<path>/arm-linux-gcc ./configure <options> > > > (CC + configure - all in one line) > > > > > > Gad > > > > > > > > > > -----Original Message----- > > > > From: mad-dev-admin(a)lists.mars.org > > > [mailto:mad-dev-admin@lists.mars.org] On Behalf Of Gareth > > > > Sent: Wednesday, February 27, 2002 9:02 PM > > > > To: mad-dev(a)lists.mars.org > > > > Subject: [mad-dev] Cross compiling libmad for ARM > > > > > > > > Hi, > > > > I am wanting to compile libmad for ARM. I have installed : > > > > > > > > arm-linux-binutils-2.11-1 > > > > arm-linux-gcc-2.95-1 > > > > arm-linux-glibc-2.1.3-1 > > > > > > > > To cross compile i do : > > > > > > > > export CC=/usr/local/arm/gnu/release/bin/arm-linux-gcc > > > > export RANLIB=/usr/local/arm/gnu/release/bin/arm-linux-ranlib > > > > export LD=/usr/local/arm/gnu/release/bin/arm-linux-ld > > > > export NM=/usr/local/arm/gnu/release/bin/arm-linux-nm > > > > > > > > ./configure --host=arm-linux --enable-speed --enable-fpm=arm > > > > > > > > The configure script completes fine but in the messages it prints i > > > see > > > > the lines : > > > > > > > > checking weather the C compiler (gcc ) is a cross-compiler ... no > > > > . > > > > . > > > > cheching for ld used by GCC... (cached) /usr/bin/ld > > > > > > > > so it is not using the cross compiler that i installed. I read in > > > > another mail that i may have to configure manually. Is this the case > > > or > > > > is there somthing i am missing out? > > > > > > > > Thanks in advance. > > > > > >

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Porting on TOSHIBA TX3911
by davidlee 06 Mar '02

06 Mar '02

Dear All: I'm porting MAD to TOSHIBA TX3911, but it seems my cross compiler mipsel-linux-gcc can't compile the asm instruction "madd" that surpported by TX3911 hardware. I wand if anybody can tell me eithe I should change compiler or I shoud change compiler's parameter and how. Thanks in advance. 李大冀 Email: davidlee(a)gv.com.tw

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How can I use configure tools to create a makefile suitable my targer board.
by davidlee 04 Mar '02

04 Mar '02

Dear All: My host is PC, and I'm porting MAD to my Target Board with Toshiba TX3911 CPU. There is many configure tools ,but I don't how to use them to create proper Makefile that can compile TX3911's "madd" instruction. BEST REGARD 李大冀 Email: davidlee(a)gv.com.tw

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