flac dev - Jan 2010 - FLAC C API / Visual Studio 2008 FILE* Issue

Hello,

I am currently learning the FLAC C API and had the code working with
FLAC__stream_decoder_init_file. However, since I'd need the Unicode filename
support, I tried _wfopen_s in combination with
FLAC__stream_decoder_init_FILE, however I get a runtime crash as sonn as I
call FLAC__stream_decoder_process_until_end_of_stream. The same code
(partially taken from the examples) is working perfectly with the function
accepting filename and crashing with the one accepting FILE*. I have tried
both compiling the library myself and using the precompiled
flac-1.2.1-devel-win. Can someone try if it is working for him (the FILE*)
version and if yes - send back the source code?
I work in Windows 7 64bit, but I tried that also on a virtual Windows XP and
it crashes there also.

Thank you for your help.
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Ivailo Karamanolev wrote:
> I am currently learning the FLAC C API and had the code working with
> FLAC__stream_decoder_init_file. However, since I'd need the Unicode
filename
> support, I tried _wfopen_s in combination with
> FLAC__stream_decoder_init_FILE, however I get a runtime crash as sonn as I
> call FLAC__stream_decoder_process_until_end_of_stream. The same code
> (partially taken from the examples) is working perfectly with the function
> accepting filename and crashing with the one accepting FILE*. I have tried
> both compiling the library myself and using the precompiled
> flac-1.2.1-devel-win. Can someone try if it is working for him (the FILE*)
> version and if yes - send back the source code?
> I work in Windows 7 64bit, but I tried that also on a virtual Windows XP
and
> it crashes there also.
There is a whole bunch of weird stuff in windows, this is just another instance.

If what you want to do is read/write FLAC files with windows UCS-16 filenames,
one option is to use libsndfile:

    http://www.mega-nerd.com/libsndfile/

which with version 1.0.21 has added this function:

    /* The function sf_wchar_open() is Windows Only!
    ** Open a file passing in a Windows Unicode filename. Otherwise, this is
    ** the same as sf_open().
    **
    ** In order for this to work, you need to do the following:
    **
    **		#include <windows.h>
    **		#define ENABLE_SNDFILE_WINDOWS_PROTOTYPES 1
    **		#including <sndfile.h>
    */
    #if ENABLE_SNDFILE_WINDOWS_PROTOTYPES
    SNDFILE* sf_wchar_open (LPCWSTR wpath, int mode, SF_INFO *sfinfo) ;
    #endif

There is a windows binary installer in the main web page (one for each of
32 and 64 bit windows).

The only downside to this is that libsndfile does not expose the all of
the features of the FLAC API to the user.

Erik
-- 
----------------------------------------------------------------------
Erik de Castro Lopo
http://www.mega-nerd.com/

I managed to get around it. I used the stream functions and provided my own
callbacks for reading and writing. What's strange is that what I've done
is
just copied the contents of read/write/seek/tell/eof callbacks from the
sources to my application and it works just fine, no glitches. When I use
the build-in implementation, it just crashes without any reason. It's not a
problem to stick with my own callbacks for reading, but fixing this issue
(if it's not just me) would be nice.

On Wed, Jan 6, 2010 at 12:38 AM, Erik de Castro Lopo
<mle+la at mega-nerd.com<mle%2Bla at
mega-nerd.com>
> wrote:
> Ivailo Karamanolev wrote:
>
> > I am currently learning the FLAC C API and had the code working with
> > FLAC__stream_decoder_init_file. However, since I'd need the
Unicode
> filename
> > support, I tried _wfopen_s in combination with
> > FLAC__stream_decoder_init_FILE, however I get a runtime crash as sonn
as
> I
> > call FLAC__stream_decoder_process_until_end_of_stream. The same code
> > (partially taken from the examples) is working perfectly with the
> function
> > accepting filename and crashing with the one accepting FILE*. I have
> tried
> > both compiling the library myself and using the precompiled
> > flac-1.2.1-devel-win. Can someone try if it is working for him (the
> FILE*)
> > version and if yes - send back the source code?
> > I work in Windows 7 64bit, but I tried that also on a virtual Windows
XP
> and
> > it crashes there also.
>
> There is a whole bunch of weird stuff in windows, this is just another
> instance.
>
> If what you want to do is read/write FLAC files with windows UCS-16
> filenames,
> one option is to use libsndfile:
>
>    http://www.mega-nerd.com/libsndfile/
>
> which with version 1.0.21 has added this function:
>
>    /* The function sf_wchar_open() is Windows Only!
>    ** Open a file passing in a Windows Unicode filename. Otherwise, this is
>    ** the same as sf_open().
>    **
>    ** In order for this to work, you need to do the following:
>    **
>    **          #include <windows.h>
>    **          #define ENABLE_SNDFILE_WINDOWS_PROTOTYPES 1
>    **          #including <sndfile.h>
>    */
>    #if ENABLE_SNDFILE_WINDOWS_PROTOTYPES
>    SNDFILE* sf_wchar_open (LPCWSTR wpath, int mode, SF_INFO *sfinfo) ;
>    #endif
>
> There is a windows binary installer in the main web page (one for each of
> 32 and 64 bit windows).
>
> The only downside to this is that libsndfile does not expose the all of
> the features of the FLAC API to the user.
>
> Erik
> --
> ----------------------------------------------------------------------
> Erik de Castro Lopo
> http://www.mega-nerd.com/
> _______________________________________________
> Flac-dev mailing list
> Flac-dev at xiph.org
> http://lists.xiph.org/mailman/listinfo/flac-dev
>
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