[FFmpeg-devel] [PATCH] libavfilter/af_ambisonic.c Added File for Ambisonic Filter

[Michael Niedermayer]

On Tue, Aug 15, 2017 at 11:57:18PM +0530, Sanchit Sinha wrote:
> On Tue, Aug 15, 2017 at 4:46 PM, Paul B Mahol <onemda at gmail.com> wrote:
> 
> > Hi,
> >
> > subject of patch file is wrong.
> >
> > Why is code for rotation so limited? One should be able to rotate by
> > all 3 directions at once.
> > _______________________________________________
> > ffmpeg-devel mailing list
> > ffmpeg-devel at ffmpeg.org
> > http://ffmpeg.org/mailman/listinfo/ffmpeg-devel
> >
> 
> 
> 
[...]

> +/*Matrix for scaling options*/
> +static const struct {
> +    float matrix[4][1];
> +} scaler_matrix[]= {
> +    [N3D]={
> +        .matrix={
> +            {1},
> +            {1},
> +            {1},
> +            {1},
> +        },
> +    },
> +    [SN3D]={
> +        .matrix={
> +            {sqrt(2*floor(sqrt(0))+1)},
> +            {sqrt(2*floor(sqrt(1))+1)},
> +            {sqrt(2*floor(sqrt(2))+1)},
> +            {sqrt(2*floor(sqrt(3))+1)},
> +        },
> +    },
> +    [FURMUL]={
> +        .matrix={
> +            {sqrt(2)},
> +            {sqrt(3)},
> +            {sqrt(3)},
> +            {sqrt(3)},
> +        },
> +    },
> +};

fails to build:

src/libavfilter/af_ambisonic.c:225:14: error: initializer element is not a compile-time constant
            {sqrt(2*floor(sqrt(0))+1)},


[...]

-- 
Michael     GnuPG fingerprint: 9FF2128B147EF6730BADF133611EC787040B0FAB

Elect your leaders based on what they did after the last election, not
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