mad-user December 2004

mad-user@lists.mars.org

4 participants
4 discussions

Where the hell is definition of struct id3_file????
by tj 29 Sep '06

29 Sep '06

In trying to learn how to use libid3, since there sems to be no documentatio. I am looking at soure trying to figure out how to use it. The first problem is the practically every call uses a pointer to a "struct id3_file" . Now, the problem is that there is no definition for id3_file structure in any .h file. I finally found it in file.c, a source file. How the hell are you supposed to use it in your app when the prototype is in a package source file? Seems that something is really broken here. tj

3 4

S: faster decoder than libmad
by jens-lippmann＠t-online.de 02 Jan '05

02 Jan '05

Hello all! I'm looking for a MP3 decoding lib faster than libmad, probably solely written in Intel assembler. I currently use libmad 0.15.1b to stream MP3 files into WAV sound buffers and I need to improve the performance. The mere task of streaming a single audio file saps about 11 milliseconds (@1.8GHz). libmad uses inline and asm here and there, but the costliest parts (frame decoding and synthing) are written in C, optimized for speed but still C. So, my question is if there's anything freely available that decodes faster than libmad? kind regards Jens Lippmann

3 2

S: faster decoder than libmad (2)
by jens-lippmann＠t-online.de 30 Dec '04

30 Dec '04

> The mere task of streaming a single audio file > saps about 11 milliseconds (@1.8GHz). Sorry I just realized I need to correct this figure. I mean the task to feed a 176 KB/s wave stream in real-time affords frame decoding and synthing of about 44 milliseconds (per second) on a P4 1800. This means 4-5% of your application is needed to keep a single wave stream going, so I'm looking to improve that performance. kind regards Jens Lippmann

1 0

[help] support multiple instance of libmad
by Sangwoon Chung 08 Dec '04

08 Dec '04

Hello there, I'm trying to decoding and playing multiple mp3 files in a time using libmad. But it does not seem to support multiple instance of libmad. I really want to know the libmad support multiple instance ? If not, please let me know how and what should I customize libmad source to support multiple instance. I'll appreciate any Help, P.S Sorry for posting this articel for mad-dev list... Thanks a lot, Sangwoon swchung(a)rtsolutions.co.kr

2 1

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mad-user December 2004