On Thu, 04 Jan 2007 14:52:06 +0100Sebastian Schäfer <schaefer@xxxxxxx> wrote:
[stuff deleted]
> The new source would be great.> Thank you very much for your efforts!> > > Regards,> > Sergei.> > > Regards,> Sebastian>
OK, I have just sent Sebastian the new source.
The offending line was
(*plugin_data).bin_$MBEQ::all_ascii_bands[$#MBEQ::all_ascii_bands] = fft_length - 1;
- it should be
(*plugin_data).bin_$MBEQ::all_ascii_bands[$#MBEQ::all_ascii_bands] = half_fft_length - 1;
instead, i.e. the bug was having 'fft_length' instead of 'half_fft_length'.
The bug was causing memory area overrun in case of any of the last twocontrols was non-default. That's why zeros did not cause the segmentationfault, and non-zeros did.
Regarding the alignment - there is 'fftwf_malloc' function in the FFTWsuite, but it doesn't work (probably a standard C library bug), i.e. itdoesn't ensure proper alignment, so I had to use 'posix_memalign', for whichI wrote a macro:
#define POSIX_MEMALIGN_AND_CHECK(type, ptr, alignment, number_of_items, item_size, line_number) \\if(posix_memalign((void *)&ptr, alignment, number_of_items * item_size) != 0) \\ {\\ fprintf(stderr, "$MBEQ::__config_hash{FileLabel}: !!! ERROR !!! could not allocate memory at line number %d of %s file\\n", line_number, __FILE__);\\ exit(1);\\ }
.
I should probably drop support of FFTW2 altogether - I am not using itand I see no good reason for it to stay in the code - FFTW3 appears to bebetter from all points of view.
But let's first try the fixes.
Regards, Sergei.
-- Visit my http://appsfromscratch.berlios.de/ open source project.
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