[FFmpeg-devel] Using dsp.fdct()

[Ramiro Polla]

Hello,

While writing the mimic decoder, iive taught me that to use 
dsp.idct_xxx() functions, I had to create a scantable such as:

init() {
     ff_init_scantable(ctx->dsp.idct_permutation, &ctx->table, zig_zag);
}

decode() {
     while(coeffs)
         block[ctx->table.permutated[pos]] = coeff;
     ctx->dsp.idct(block);
}

Now, with dsp.fdct(), do I also have to use a scantable?

If so, how should I use it?

init() {
     ff_init_scantable(ctx->dsp.idct_permutation, &ctx->table, zig_zag);
}

encode() {
     ctx->dsp.fdct(block);
     encode runs between block[ctx->table.permutated[i]];
}

...?

Ramiro Polla