mad-dev September 2002

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10 discussions

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how to get time when play a mp3 using libmad
by Zhiwen Yang 31 Dec '02

31 Dec '02

who can tell me how to get the time when i play a mp3 file using libmad ? which function can i use ?

2 1

To parse ID3v2.4
by rahul_dsp 01 Oct '02

01 Oct '02

Hi All, I am new to the list ,I am working on ID3 tags decoding. I want to parse ID3v2.4 tag but facing lots of problems as basic idea of ID3v2.4 is not very much clear. Regarding SEEK Frame can anyone highlight how it works. What I know is that it gives the minimum offset of the next tag from the end of the current tag. This minimum offset is in synchsafe integers of four bytes does that mean that every 8th bit of the byte will be zero as was the case for size of tag and total bits will be 28 instead of 32. Please clear this out. Also I need sample tag of ID3v2.4 and ID3v2.2 or it would be great if someone provide me the link where it is available. regards, Rahul --------------------------------------------- http://mail.indiainfo.com India's first ISO certified portal Check world time at http://time.indiainfo.com

3 2

To parse ID3v2.4
by rahul_dsp 30 Sep '02

30 Sep '02

1 0

madplay frontend design
by Umar Qureshey 24 Sep '02

24 Sep '02

Hi, I would like to create a curses front-end for madplay 0.12.5b (I know it's ancient, I might migrate later to newer versions). My question is where in the code would this reside? Would it be in the main() function in madplay.c or perhaps play() in player.c? Looking at audio_*.c files, it seems that one can pass control commands to start, stop, etc. Any references or suggestions (regardless of madplay version) would be greatly appreciated. Regards, UQ

1 0

Also Need help with MAD Synthesis Polyphase Filterbank
by Jane Zhao 10 Sep '02

10 Sep '02

Hi, Sir, I also need help to understand your polyphase synthesis filterbank algorithm. I looked at your dct32 and synth_full funtions. They are quite different from the synthesis filter algorithm description in 11172-3. Is there any reference paper that descripes your algorithm? Thanks. -Jane On Tuesday, September 3, 2002, at 07:34 AM, Nelly.TOURNIER(a)wavecom.fr wrote: > I am now working on the MAD MP3 decoder, and I can't understand the > polyphase synthesis filterbank... Does anyone have some info please? What would you like to know about it? __________________________________________________ Do You Yahoo!? Yahoo! Finance - Get real-time stock quotes http://finance.yahoo.com

1 1

MAD-polyphase filterbank synthesis
by Nelly.TOURNIER＠wavecom.fr 09 Sep '02

09 Sep '02

I don't really understand what does the mad_fixed_t filter[2][2][2][16][8] mean? What does each field exactly correspond to? What is the phase? Is it the subband number? And I can't see how the matrixing is made, with all the variables used, in the dct_32 function. Sincerely, Nelly

1 0

Need help with MAD Synthesis Polyphase Filterbank
by Nelly.TOURNIER＠wavecom.fr 03 Sep '02

03 Sep '02

I am now working on the MAD MP3 decoder, and I can't understand the polyphase synthesis filterbank... Does anyone have some info please? Thanks, Nelly

2 1

tremor relicensed as BSD (fwd)
by Nicolas Pitre 03 Sep '02

03 Sep '02

I thought this announcement could be of some interest to people here too. ---------- Forwarded message ---------- Date: Tue, 3 Sep 2002 14:24:48 +0100 From: rillian <rillian(a)telus.net> Reply-To: vorbis-dev(a)xiph.org To: vorbis-dev(a)xiph.org Subject: [vorbis-dev] tremor relicensed as BSD For those of you not of the commit mailing list, I wanted to point out that monty has checked the fixed-point 'tremor' vorbis decoder into xiph.org cvs, under the usual (free) xiph license. This was developed for use in embedded devices, so if you've been waiting for an interger-only (no fpu) implementation, you might want to give it a try. The code is in the 'Tremor' cvs module. As usual, nightly snapshots are available at http://xiph.org/ogg/vorbis/download/. There's also a new mailing list 'tremor(a)xiph.org'.

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bug of show_status ?
by Zhiwen Yang 03 Sep '02

03 Sep '02

Is there anyone who knows why the static show_status function ? i changed this function to a global function and call it. I find the time in this function is right,such as the current time ,but i can not get it outside this function ? anyone knows this ?

1 0

how to get total time when play a mp3 using libmad
by Zhiwen Yang 02 Sep '02

02 Sep '02

Hi,everyone Is there a function that we can use to get a total time when we play a mp3 file using libmad. i printf the stats->total_time ,it is always zero ? Is there something wrong? Thanks

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mad-dev September 2002