mad-dev

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682 discussions

Re: [mad-dev] Arm cross compile
by Andrew Douglas 13 Mar '05

13 Mar '05

Hi Thanks for your advice but I checked and mad.h and id3tag.h are both already in /usr/local/include and libmad* is in /usr/local/lib. I've tried # RANLIB=arm-linux-ranlib CC=arm-linux-gcc ./configure --host=arm-linux CFLAGS="-I/usr/local/include -L/usr/local/lib" and although it gets past mad.h: checking mad.h usability... yes checking mad.h presence... no configure: WARNING: mad.h: accepted by the compiler, rejected by the preprocessor! configure: WARNING: mad.h: proceeding with the compiler's result checking for mad.h... yes its stil complains about libmad: checking for mad_decoder_run in -lmad... no configure: error: libmad was not found Any Ideas TIA Andy Douglas On Sun, 13 Mar 2005 07:16:14 +0100, pmisteli <pmisteli(a)terpalum.umd.edu> wrote: > > On 2005 Mar 12, at 22:47, Andrew Douglas wrote: > > > Hi > > > > I wonder if anyone can help. I'm trying to cross compile > > madplay-0.15.2b for an arm9 processor running a 2.4.18 kernel. I'm > > building the source on a redhat9 host. I do the following: > > > > $ ./configure && make && make install > > > > for libmad and libid3tag. Then I try configuring madplay with the > > following command: > > > > $ RANLIB=arm-linux-ranlib CC=arm-linux-gcc ./configure --host=arm-linux > > > > and get the following error: > > > > checking mad.h usability... no > > checking mad.h presence... no > > checking for mad.h... no > > configure: error: mad.h was not found > > *** You must first install libmad before you can build this package. > > > > I include the libmad dir with CFLAG and then it complains about > > libid3. I include this then it complains: > > > > configure: error: libmad was not found > > > > This doesn't seem right. Is there something I've done wrong. > > > > Any hints would be appreciated. > > > > TIA > > > > Andy Douglas > > > > > > Hello, > > Here is a hint : > > check the libmad installation : > > find /usr/local -name mad.h > > If mad.h is not there, you might not have permissions for /usr/local, > you may need to do > > sudo make install > > for libmad (and libid3). > > Hope this helps, > pmisteli > >

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problem when enable profiling
by Arthur Huang 10 Mar '05

10 Mar '05

Hi all: I use the gprof to to analyze the functions in libmad. I test libmad with madplay. I use the command './configure --enable-profiling' to create makefile under libmad and madplay. Then make and make install. the use madplay to play a mp3 file. It doesn't work with the log that 'audio: /dev/dsp: Device or resource busy'. When I create makefile with command './configure'. Then make and make install. The madplay work well. Can you help me with this? Thank you. --------------------------------- Do you Yahoo!? Yahoo! Small Business - Try our new resources site!

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Client/server for Python on Windows
by Ken Seehof 08 Mar '05

08 Mar '05

Is there a python wrapper that runs on all platforms including windows? I need portable peer to peer audio streaming in python. Am I looking in the right place? Thanks. - Ken

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RE: [mad-dev] PCM output to DAC
by Nigel Sinfield 28 Jan '05

28 Jan '05

I have libmad running on a 940T at 160MHz. It uses about 35% of the CPU decoding a 128kbps/44100Hz stereo MP3, so you should have no problem if your system isn't doing much else. RAM and flash won't be an issue for you, either. I don't use madplay any more, but it isn't resource-hungry. Sorry, can't help with the second part. > -----Original Message----- > From: mad-dev-admin(a)lists.mars.org > [mailto:mad-dev-admin@lists.mars.org]On Behalf Of Andrew Douglas > Sent: 27 January 2005 21:35 > To: mad-dev(a)lists.mars.org > Subject: [mad-dev] PCM output to DAC > > > Hi > > I'm currently developing on an Altera Excalibur EPXA1db board, which > has an arm922T running at 200 MHz, 32 MB ram and 8 MB flash. I've got > a Linux 2.4 kernel running on the board with a basic root filesystem. > I'm looking at cross-compiling madplay (& libmad) to run on this > architecture and would appreiciate a bit of advice before starting. > > 1. Does the system I'm using appear to have enough resources to be > able to run this application. Does anyone have figures for MIPS, > memory requirements and CPU usage for this application running on a > similar ARM architecture? My system has no hardware FPU but does have > an MMU. > > 2. I require the decoded stream to be sent, via general purpose IO > pins, to a customised PCB with a (16-bit) DAC and audio preamp. I plan > to use the folowing command: > > $ ./madplay --output=raw:/dev/dsp foo.mp3 > > Will I have to write a device driver to enable this or is there a > simple way to direct the stream to the memory mapped pins? > > Is there anything else that I overlooked? Any help would be > appreiciated. > > TIA > > Andy Douglas > The contents of this email and any attachments are sent for the personal attention of the addressee(s) only and may be confidential. If you are not the intended addressee, any use, disclosure or copying of this email and any attachments is unauthorised - please notify the sender by return and delete the message. Any representations or commitments expressed in this email are subject to contract. ntl Group Limited

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PCM output to DAC
by Andrew Douglas 27 Jan '05

27 Jan '05

Hi I'm currently developing on an Altera Excalibur EPXA1db board, which has an arm922T running at 200 MHz, 32 MB ram and 8 MB flash. I've got a Linux 2.4 kernel running on the board with a basic root filesystem. I'm looking at cross-compiling madplay (& libmad) to run on this architecture and would appreiciate a bit of advice before starting. 1. Does the system I'm using appear to have enough resources to be able to run this application. Does anyone have figures for MIPS, memory requirements and CPU usage for this application running on a similar ARM architecture? My system has no hardware FPU but does have an MMU. 2. I require the decoded stream to be sent, via general purpose IO pins, to a customised PCB with a (16-bit) DAC and audio preamp. I plan to use the folowing command: $ ./madplay --output=raw:/dev/dsp foo.mp3 Will I have to write a device driver to enable this or is there a simple way to direct the stream to the memory mapped pins? Is there anything else that I overlooked? Any help would be appreiciated. TIA Andy Douglas

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Porting MAD to Symbian series 60
by cin dul 16 Jan '05

16 Jan '05

Hi, Has anybody been successful in porting MAD to symbian series 60?? Please, if you have any ideas worth sharing... Thanks __________________________________ Do you Yahoo!? Yahoo! Mail - Helps protect you from nasty viruses. http://promotions.yahoo.com/new_mail

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How to generate mad.h ??
by cin dul 10 Jan '05

10 Jan '05

After built libmad, I still don't get mad.h file. I've been read the README file, it said : "The API for libmad can be found in the `mad.h' header file. Note that this file is automatically generated, and will not exist until after you have built the library." So?? How to generate mad.h?? Thanks __________________________________ Do you Yahoo!? Yahoo! Mail - Easier than ever with enhanced search. Learn more. http://info.mail.yahoo.com/mail_250

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libmad 0.15.1b assertion failure
by Glenn Maynard 04 Jan '05

04 Jan '05

I accidentally loaded some non-audio data in my application, and I'm getting: a.out: layer3.c:2640: mad_layer_III: Assertion `stream->md_len + md_len - si.main_data_begin <= (511 + 2048 + 8)' failed. I'm using the low-level interface. I can reproduce this with madlld, if I change INPUT_BUFFER_SIZE from 5*8192 to 4*8192 or lower (my own buffer is 16k). The file (edited down as small as I can get it while still triggering this) is at: http://zewt.org/~glenn/testfile There's some MPEG-1 video in there, which I suppose MAD is picking up; that's fine, I just want it to gracefully play garbage or give a fatal error, without dying. -- Glenn Maynard

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how to convert mp3 into wav by mad?
by Wen 30 Dec '04

30 Dec '04

may i get the wave in 1mono 8bit 8000khz? -- With my best regards, Wen

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RE: [mad-dev] how to convert mp3 into wav by mad?
by Nigel Sinfield 30 Dec '04

30 Dec '04

Assuming your MPEG source has a different sample rate, you'll need to resample it after it has been decoded. You can find example code in the resample.c module of madplay. Average each pair of stereo samples to get mono; drop least-significant bits (with rounding maybe) to get to 8 bits. Out of interest, what is your application? I've tried 7-bit mono at 11kHz, and it sounded awful :-) > -----Original Message----- > From: mad-dev-admin(a)lists.mars.org > [mailto:mad-dev-admin@lists.mars.org]On Behalf Of Wen > Sent: 30 December 2004 07:33 > To: mad-dev(a)lists.mars.org > Subject: [mad-dev] how to convert mp3 into wav by mad? > > > may i get the wave in 1mono 8bit 8000khz? > > -- > With my best regards, > Wen > The contents of this email and any attachments are sent for the personal attention of the addressee(s) only and may be confidential. If you are not the intended addressee, any use, disclosure or copying of this email and any attachments is unauthorised - please notify the sender by return and delete the message. Any representations or commitments expressed in this email are subject to contract. ntl Group Limited

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