minimp3 source code

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disciple · #16 Post by **disciple** » Fri 03 Sep 2010, 06:01

Impact not discernible with htop (in cache?)

That's why I didn't try to compare it myself

jpeps · #17 Post by **jpeps** » Fri 03 Sep 2010, 10:52

disciple wrote:
Impact not discernible with htop (in cache?)
That's why I didn't try to compare it myself

Hey.. there's a difference; this is for the high quality mini using gnu libc and libm.

mpg321: 55M 6% CPU
minimp3: 48M 2% CPU

goingnuts · #18 Post by **goingnuts** » Sun 05 Sep 2010, 13:07

Any chance to include support for .au and .wav-play? Think both can just be send to /dev/audio or /dev/dsp via cat but might not play all files correct though...

technosaurus · #19 Post by **technosaurus** » Sun 05 Sep 2010, 19:16

goingnuts wrote:Any chance to include support for .au and .wav-play? Think both can just be send to /dev/audio or /dev/dsp via cat but might not play all files correct though...

I can't code it but if you can point me to a small standalone example(s), I may be able to hack it in there. I'd also need a C example to parse the file extension.

technosaurus · #20 Post by **technosaurus** » Tue 07 Sep 2010, 05:04

I found wavplay, but it needs a lot of hacking down - still contains quite some bloat, but I compiled it statically against dietlibc if anyone wants it.

http://sourceforge.net/projects/wavplay/files/

edit: bplay is a little better size wise and plays other formats too

goingnuts · #21 Post by **goingnuts** » Sat 25 Sep 2010, 14:48

Thanks for the new small players! Tried to compile your modified minimp3 using ulibc - seems to work ok - but size is huge 44K.

technosaurus · #22 Post by **technosaurus** » Sat 25 Sep 2010, 16:22

it only adds about 20kb to busybox if you compile statically against static uclibc (using CFLAGS="-ffunction-sections -fdata-sections ...:" and LDFLAGS="-Wl,...,--gc-sections,... ")

I submitted the patch to the busybox mail list and Denys Vlasenko sent me some tips for shrinking the size even further. I will post the tarball with the patch and notes from Denys. So far I haven't been able to do much more than the formatting without breaking the build.

jpeps · #23 Post by **jpeps** » Sat 25 Sep 2010, 17:51

Where is busybox source stored? Thanks

edit: I guess I could just download 1.16.2 from icewalkers.

technosaurus · #24 Post by **technosaurus** » Sat 25 Sep 2010, 20:00

it was diffed against the latest stable shortly after its release:
http://busybox.net/downloads/busybox-1.17.2.tar.bz2
Ffor continuity it is best to try applying against master:
http://git.busybox.net/busybox/snapshot ... er.tar.bz2
or at least the latest snapshot:
http://busybox.net/downloads/snapshots/ ... ot.tar.bz2

goingnuts · #25 Post by **goingnuts** » Fri 12 Nov 2010, 05:42

technosaurus wrote:...it but if you can point me to a small standalone example(s), I may be able to hack it in there. I'd also need a C example to parse the file extension.

Attached small application that find file extension and launch minimp3, wavplay or play .au directly. Could be done by script...

bplay have some code that determines file-extension but I do not understand how - else bplay merged with minimp3 could be a more complete player (if size still could be small).

Update: Refined (...?) the code, added multi player capabilities - just through all your audio files to the launcher and they will play. Also included a much smaller static binary compiled using diet-lib (9K). Do not use spaces in filename - working on this bug...

Still not very useful compared to a simple script...but fun to sniff to C-coding...
Another (last) update: Now works with file-names containing spaces.

technosaurus · #26 Post by **technosaurus** » Fri 12 Nov 2010, 07:23

I forgot these functions that I have added to bashbox:
(doesn't work for _ALL_ files though)

Code: Select all

play_au() { #just sends $@ to /dev/audio
cat $@ > /dev/audio
}

play_wav() { #just sends $@ to /dev/dsp
cat $@ > /dev/dsp
}

Ibidem · #27 Post by **Ibidem** » Mon 16 Apr 2012, 01:44

Yes I know this thread is old--but I thought I'd rather not steal the pupngo thread.

Here's the sizes when built with musl libc and stripped:

Code: Select all

-rwxr-xr-x 1 ibid ibid 46028 2012-04-15 18:28 minimp3-musl
-rwxr-xr-x 1 ibid ibid 33724 2012-04-15 18:28 minimp3-musl,os
-rwxr-xr-x 1 ibid ibid 42944 2012-04-15 18:28 minimp3-musl,s
-rwxr-xr-x 1 ibid ibid 29288 2012-04-15 18:28 minimp3-musl.upx

musl,os : built with -Os
musl,s: built with -static -Os
musl: unoptimized, dynamically linked
musl.upx: musl,s after upx --best

All of them sound decent (close to mpg123)
RSS ~1MB, CPU 4%.

(Built on Ubuntu Lucid)

goingnuts · #28 Post by **goingnuts** » Mon 16 Apr 2012, 19:02

Attached slightly modified source - accept command -q for silent run (like mpg123). Build static with diet libc:

Code: Select all

-rwxr-xr-x 1 root root 40084 2012-04-16 20:59 minimp3

Build static with uclibc:

Code: Select all

-rwxr-xr-x 1 root root 47116 2012-04-16 21:04 minimp3

Ibidem · #29 Post by **Ibidem** » Tue 17 Apr 2012, 00:26

Code: Select all

musl-gcc -pipe -Os -mtune=i686 -static -s -ffunction-sections -fdata-sections -D_XOPEN_SOURCE -Wl,--gc-sections -finline-functions-called-once -fmerge-all-constants -fexpensive-optimizations -fomit-frame-pointer -fpeephole2 -fno-loop-optimize -momit-leaf-frame-pointer minimp3.c

gives 40736 bytes; stripped is 40588 bytes
49183 bytes built with -Os -static -D_XOPEN_SOURCE and unstripped, so that's a tiny bit larger than uclibc.

goingnuts · #30 Post by **goingnuts** » Tue 17 Apr 2012, 15:21

Ibidem: Thats a small difference in size - I think I will start looking more close on the musl!

The mpg123 seems to compile easy with diet (a small diff and build script attached). It gives a 212K static bin. Wonder at what size musl will do that?

Tried to use the latest mpg123 ("mpg123-1.13.8") - it compiled but did have issues playing mp3. Then went for mpg123-1.13.4 which also compiles and on top of that actually plays mp3.

Also did a quick test with mpg321 but that seems harder to patch for diet libc.

While surfing I found this page with some nice instructions for streaming mp3 and a poor mans skype...

Might be that the minimp3 could also be hacked to play URL playlists? The mpg123 can play internet radio by issuing the following command:

Code: Select all

mpg123 -@ http://players.creacast.com/creacast/classique/playlist.pls

technosaurus · #31 Post by **technosaurus** » Tue 17 Apr 2012, 17:50

goingnuts wrote:
While surfing I found this page with some nice instructions for streaming mp3 and a poor mans skype...

Might be that the minimp3 could also be hacked to play URL playlists? The mpg123 can play internet radio by issuing the following command:
Code: Select all
mpg123 -@ http://players.creacast.com/creacast/classique/playlist.pls

I looked into doing poor mans voip this way but hit a brick wall when looking for a way to get the non.local IP address ... needed some external server like dyndns but I never solved it ... only tested locally with local IPs using ffmpeg... still I like the Unix philosophy of tools doing 1thing well and using them together liberally rather than reinvent existing code every time you need to combine 2+ functions. ... for instance you can use netcat, SSH, telnet, dropbear... instead of bolting their capabilities into a program so it can work over the net.

Ibidem · #32 Post by **Ibidem** » Mon 23 Apr 2012, 04:10

goingnuts wrote: The mpg123 seems to compile easy with diet (a small diff and build script attached). It gives a 212K static bin. Wonder at what size musl will do that?

Tried to use the latest mpg123 ("mpg123-1.13.8") - it compiled but did have issues playing mp3. Then went for mpg123-1.13.4 which also compiles and on top of that actually plays mp3.

Also did a quick test with mpg321 but that seems harder to patch for diet libc.

While surfing I found this page with some nice instructions for streaming mp3 and a poor mans skype...

Might be that the minimp3 could also be hacked to play URL playlists? The mpg123 can play internet radio by issuing the following command:
Code: Select all
mpg123 -@ http://players.creacast.com/creacast/classique/playlist.pls

I've done the mpg123 internet radio thing a bit. It's nice and simple.

But I'd advise not trying to add netwirking--mpg123 is the undisputed King of the Hill there, you'll add a good bit of bloat, and you can probably do it via curl <url>|minimp3 - or such anyhow... (I assume that minimp3 supports stdin as a file?)
And FWIW-pls is not an mp3, so you'd have to implement a pls parser...best done in shell script.

Don't bother with mpg321-it was relevant several years ago, but IIRC current mpg123 has improved decoding on sub-pentium machines (which was the only reason to use mpg321).

Ibidem · #33 Post by **Ibidem** » Thu 03 May 2012, 19:00

goingnuts wrote:Ibidem: Thats a small difference in size - I think I will start looking more close on the musl!

The mpg123 seems to compile easy with diet (a small diff and build script attached). It gives a 212K static bin. Wonder at what size musl will do that?

Tried to use the latest mpg123 ("mpg123-1.13.8") - it compiled but did have issues playing mp3. Then went for mpg123-1.13.4 which also compiles and on top of that actually plays mp3.

mpg123, 1.13.4:
274612 bytes stripped, statically linked, stripped, compiled with -Os, using OSS audio only.
No other tricks involved except getting the Linux headers included, and building with -D_GNU_SOURCE.
This is upstream source, unpatched. Plays streaming mp3 fine.

In the FWIW department:
All these numbers are with a stock musl, including full UTF8 and everything else...Rich Felker says

I would believe that it's possible to get smaller binaries with a
uClibc that's had lots of features turned off when the library was
built, meaning that those features are completely unavailable to
applications. On the other hand, I suspect musl will easily beat
uClibc in static linking size when uClibc is full-featured (UTF-8,
pthread, full malloc, stdio, hex floats in printf, ...) because musl
takes a lot more care not to have unnecessary cross-dependency between .o files in the static lib. Still, some things are impossible to
optimize out with the linker - for example, printf always pulls in a
minimum amount of UTF-8 conversion code for %ls and %c.

goingnuts · #34 Post by **goingnuts** » Thu 03 May 2012, 20:10

Ibidem: With my uclibc (uClibc-0.9.27) I can get it down to 304K static/striped/oss only.

Tried to use musl-0.8.10 (compiled by "make" and installed by "new2dir make install")

Compiling mpg123 with musl was not 100 % successful:
Had to comment out #undef HAVE_MMAP in mpg123´s config.h.in to get mpg123 compiled and ended up with approx. 346K static/stripped bin. But it would not play...D...!

I will keep practice the musl though...

Any chance you could provide a musl-pet/sfs? Or maybe some examples of howto build simple things?

Ibidem · #35 Post by **Ibidem** » Sun 06 May 2012, 00:57

1. Compile and install musl, preferably from git head (a release is a tag, not a branch, so all fixes are in git).
Copy config.mak from dist/ and adjust as you want.
PREFIX defaults to /usr/local/musl, and should not be set to /, /usr, or /usr/local (or you will kill your OS)
2. Get the linux kernel headers (linux-libc-dev, not the ones for building modules) and put them somewhere (I use /opt/musl/lin)
There should be a linux/ directory in there.
3. export CC=musl-gcc; export CFLAGS="-Os -static -fno-stack-protector -I/opt/musl/lin -D_GNU_SOURCE"
Don't forget the -D_GNU_SOURCE - most stuff won't build without that, though some will. -I/... should point to the linux headers.
(Note-the linux headers are needed for OSS and a lot besides)
4. Now run configure and make.

That's all that I know is needed.

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minimp3 source code

Test w/musl libc...