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Old 18th August 2009, 07:23   #1  |  Link
CKQueen
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Join Date: Aug 2009
Posts: 5
Selecting wavelet filter in libschroedinger

Hi,

I would like to choose the wavelet filter for libschroedinger in ffmpeg. Since there is no option to select the filter, I have looked into the schrowavelet.c, schrofilter.c and schrodecoder and I found out that in the function "schro_frame_filter_adaptive_lowpass (SchroFrame *frame)", the filter is set as "SCHRO_WAVELET_LE_GALL_5_3" as below:

schro_wavelet_transform_2d (&tmp->components[0], SCHRO_WAVELET_LE_GALL_5_3,
tmpdata);

My question is whether the filter for libschroedinger is fixed at SCHRO_WAVELET_LE_GALL_5_3 (default)? if that is the case, can I just change filter type to HAAR0 as below:

schro_wavelet_transform_2d (&tmp->components[0], SCHRO_WAVELET_HAAR_0,
tmpdata);

in the schrofilter.c functions?

Thank you in advance.

Regards,
CK
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