I'll submit a patch to add/process the command line option for wavelet
filters to the libschroedingerenc.c in ffmpeg. Meanwhile, rather than
changing the Schroedinger library code, add the following lines to the
init function libschroedinger_encode_init in
libavcodec/libschroedingerenc.c
schro_encoder_setting_set_double(p_schro_params->encoder,
"intra_wavelet",
your_wavelet_id_of_choice);
schro_encoder_setting_set_double(p_schro_params->encoder,
"inter_wavelet",
your_wavelet_id_of_choice);
Regards,
Anuradha
On Sun, 2009-08-16 at 23:21 -0700, wong yeewan wrote:
> Dear Experts,
>
> 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 for your help.
>
> Regards,
> Yvonne
>
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