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Editing VLC Source Code

http://forum.videolan.org/viewtopic.php?f=32&t=57876

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Editing VLC Source Code

Posted: 07 Apr 2009 07:35
by medha
HI All,
I am Medha and new to this forum.
I dont know, whether i can post this question here or not, if not -- sorry for that and please let me know, where can i post the same..

Coming to the question,
We are developing a player engine which parses Mpeg-TS and does AvSync Calculations and push the data to decoders. But to test the code, we dont have hardware support as of now..
So i want to know whether i can use open soure player - VLC -- Where
(1) Replace the AvSync logic of player with our AvSync logic
(2) Should be able to decode H.264 and AAC data
(3) Need GUI -- Displaying the decoded data

If VLC can be used, which portions i need to refer in the source code -- I tried to go through the source code, but it is vey huge and didnot understand anything about it..

I tried to compile the VLC Code on Windows but its giving errors -- Couldnot find libmad on your system

How can i rectify that compile VLC and modify based on our requirements..

Thanks in advance..
Medha

Re: Editing VLC Source Code

Posted: 07 Apr 2009 09:58
by Jean-Baptiste Kempf
Install the contribs to compile VLC on windows.

Re: Editing VLC Source Code

Posted: 11 Apr 2009 06:24
by ipmultimedia
hi all
we want to understand and edit vlc source code.
we don't know where is the start of it in code.
please help us.

Re: Editing VLC Source Code

Posted: 11 Apr 2009 11:17
by Rémi Denis-Courmont
The "start" is bin/vlc.c or bin/winvlc.c depending on the platform.

Re: Editing VLC Source Code

Posted: 17 Feb 2010 13:43
by Eusebiu
Hi all...

I am not editing the source yet but I have the same problem... :) and I followed these steps: http://wiki.videolan.org/Win32CompileMSYS
so... I've installed MinGW, Msys and downloaded the source of VLC and pre-compiled contribs. The contribs tar ball I've put it in the root (that is actually C:\Msys\1.0) and execute: (in the tutorial, it says "Copy them in your ~"... is this the root of Msys? or VLC source code?)

Code: Select all

tar xvjf contrib-20100214-win32-bin-gcc-4.4.2-runtime-3.17-only.tar.bz2 -C / rm -v /usr/win32/bin/moc /usr/win32/bin/uic /usr/win32/bin/rcc
It created the win32 folder in C:\Msys\1.0 and I thought that is enought.

After Bootstrap VLC (which gave me this error: ./bootstrap: /bin/autoreconf: /bin/perl: bad interpreter: No such file or directory there is no perl requirement in that tutorial), I tried to configure. The file extras/package/win32/configure-msys.sh was not there so I've entered inside the VLC source code root (that is in Msys /c/vlc-1.0.5 or C:\vlc-1.0.5) and execute ./configure.
After a while, I got this error:

Code: Select all

configure: WARNING: only static linking is available, you must provide a gme-tre e checking mad.h usability... no checking mad.h presence... no checking for mad.h... no configure: error: Could not find libmad on your system: you may get it from http://www.underbit.com/products/mad/. Alternatively you can use --disable-mad to disable the mad plugin.
I looked over for libmad and I found it inside C:\msys\1.0\win32\lib as libmad.a and libmad.al.

What am I missing?

Thanks. :)

Re: Editing VLC Source Code

Posted: 17 Feb 2010 16:40
by Jean-Baptiste Kempf
Take the configure-msys.sh from Git.

Re: Editing VLC Source Code

Posted: 09 Mar 2010 09:32
by x_tine
hi everyone,

i also want to edit vlc but before that i have to understand how to build it.

I really don't know where else to go to look for the answer except here. So i'm hoping someone can help me.

I'm a newbie on the msys/mingw environment.
Through with bootstrapped thanks to j-b.

but stuck on configure:
error on last line:

Code: Select all

$ sh extras/package/win32/configure-msys.sh configure: WARNING: unrecognized options: --enable-merge-ffmpeg, --disable-sqlit e, --enable-peflags checking build system type... i386-pc-linux-gnu checking host system type... i586-pc-mingw32msvc checking for a BSD-compatible install... /bin/install -c checking whether build environment is sane... yes checking for i586-mingw32msvc-strip... no checking for strip... strip configure: WARNING: using cross tools not prefixed with host triplet checking for a thread-safe mkdir -p... /bin/mkdir -p checking for gawk... gawk checking whether make sets $(MAKE)... yes checking how to create a ustar tar archive... gnutar checking whether to enable maintainer-specific portions of Makefiles... yes checking for style of include used by make... GNU checking for i586-mingw32msvc-gcc... gcc checking for C compiler default output file name... a.exe checking whether the C compiler works... yes checking whether we are cross compiling... yes checking for suffix of executables... .exe checking for suffix of object files... o checking whether we are using the GNU C compiler... yes checking whether gcc accepts -g... yes checking for gcc option to accept ISO C89... none needed checking dependency style of gcc... gcc3 checking for gcc option to accept ISO C99... -std=gnu99 checking how to run the C preprocessor... gcc -std=gnu99 -E checking for grep that handles long lines and -e... /bin/grep checking for egrep... /bin/grep -E checking for ANSI C header files... yes checking for sys/types.h... yes checking for sys/stat.h... yes checking for stdlib.h... yes checking for string.h... yes checking for memory.h... yes checking for strings.h... yes checking for inttypes.h... yes checking for stdint.h... yes checking for unistd.h... yes checking minix/config.h usability... no checking minix/config.h presence... no checking for minix/config.h... no checking whether it is safe to define __EXTENSIONS__... yes checking whether gcc -std=gnu99 and cc understand -c and -o together... yes checking whether we are using the GNU C++ compiler... no checking whether g++ accepts -g... no checking dependency style of g++... none checking how to run the C preprocessor... gcc -std=gnu99 -E checking for i586-mingw32msvc-gcc... no checking for i586-mingw32msvc-objcc... no checking for i586-mingw32msvc-objc... no checking for i586-mingw32msvc-cc... no checking for i586-mingw32msvc-CC... no checking for gcc... gcc checking whether we are using the GNU Objective C compiler... no checking whether gcc accepts -g... no checking dependency style of gcc... gcc3 checking dependency style of gcc... (cached) gcc3 checking for egrep... (cached) /bin/grep -E checking whether make sets $(MAKE)... (cached) yes checking for a BSD-compatible install... /bin/install -c checking dependency style of gcc -std=gnu99... gcc3 checking for i586-mingw32msvc-ranlib... no checking for ranlib... ranlib checking for i586-mingw32msvc-strip... strip checking for i586-mingw32msvc-ar... no checking for ar... ar checking for i586-mingw32msvc-ld... no checking for ld... ld checking for i586-mingw32msvc-dlltool... no checking for dlltool... dlltool checking for an ANSI C-conforming const... yes checking for inline... inline checking for C/C++ restrict keyword... __restrict checking for i586-mingw32msvc-windres... no checking for windres... windres checking for i586-mingw32msvc-objcopy... no checking for objcopy... objcopy ./configure: line 9567: syntax error near unexpected token `build_old_libs,' ./configure: line 9567: ` _LT_DECL(build_old_libs, enable_static, 0,'
do i have to edit something? or is any of my tools are outdated? :?:

Re: Editing VLC Source Code

Posted: 09 Mar 2010 13:07
by x_tine
ok answered my previous problem. but got another problem.

configure: error: required OLE headers are missing from your system.

Re: Editing VLC Source Code

Posted: 18 Mar 2010 06:16
by sum_agg
Please check the version of gcc and g++ using "gcc --version". Updating to gcc 4.5 and g++ 4.5 should solve this issue.

Re: Editing VLC Source Code

Posted: 06 Apr 2010 14:32
by x_tine
i didnt know what was wrong. I restarted the whole thing and came out okay. Thanks for the reply :D

Re: Editing VLC Source Code

Posted: 27 Apr 2010 09:41
by buatcintaku
if i want to add codec

where codec is placed to??
what extension for the codec??

if i want to create new media player with c++ on visual studio and i use the libvlc, what the extension of libvlc can be used?

thanks
sorry my english is bad

Re: Editing VLC Source Code

Posted: 01 Dec 2010 12:22
by bingo
[quote="x_tine"]hi everyone,

i also want to edit vlc but before that i have to understand how to build it.

I really don't know where else to go to look for the answer except here. So i'm hoping someone can help me.

I'm a newbie on the msys/mingw environment.
Through with bootstrapped thanks to j-b.

Hi ,

How u got through with bootsrap in VLC code

when I did the ./bootstrap
++ dirname ./bootstrap
+ cd .
+ ACLOCAL_ARGS='-I m4 '
+ test -d extras/contrib/build/bin
++ uname -s
+ test .MINGW32_NT-5.1 = .Darwin
+ pkg-config --version
+ PKGCONFIG=no
+ export AUTOPOINT
+ test ''
+ AUTOPOINT=autopoint
+ autopoint --dry-run --force
+ AUTOPOINT=true
+ echo
+ set +x
generating modules/**/Makefile.am
...........................................................................
+ echo
+ echo
+ cp -f INSTALL INSTALL.git
+ autoreconf --install --force --verbose -I m4
./bootstrap: /bin/autoreconf: /bin/perl: bad interpreter: No such file or directory

please let me know any configuration am missing, am struck here

Re: Editing VLC Source Code

Posted: 01 Dec 2010 14:54
by Jean-Baptiste Kempf
You need to install perl and autoreconf

Re: Editing VLC Source Code

Posted: 02 Dec 2010 19:42
by bingo
Thanks j-B

Re: Editing VLC Source Code

Posted: 06 Dec 2010 17:23
by bingo
Hi Jean,

I need to compile vlc code 1.0.1 version on mingw and please let me know version of the contrib i.e third party libraries version I need to take, instead of taking the latest version

and please let me any mapping between these vlc version and contribs

Re: Editing VLC Source Code

Posted: 06 Dec 2010 17:24
by bingo
Thanks & Regards
Bingo
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