Ejemplos de ff_iir_filter_free_coeffsp en C++ (Cpp)

Ejemplo n.º 1

Archivo: iirfilter-test.c Proyecto: 0xheart0/FFmpeg

int main(void)
{
    struct FFIIRFilterCoeffs *fcoeffs = NULL;
    struct FFIIRFilterState  *fstate  = NULL;
    float cutoff_coeff = 0.4;
    int16_t x[SIZE], y[SIZE];
    int i;

    fcoeffs = ff_iir_filter_init_coeffs(NULL, FF_FILTER_TYPE_BUTTERWORTH,
                                        FF_FILTER_MODE_LOWPASS, FILT_ORDER,
                                        cutoff_coeff, 0.0, 0.0);
    fstate  = ff_iir_filter_init_state(FILT_ORDER);

    for (i = 0; i < SIZE; i++)
        x[i] = lrint(0.75 * INT16_MAX * sin(0.5 * M_PI * i * i / SIZE));

    ff_iir_filter(fcoeffs, fstate, SIZE, x, 1, y, 1);

    for (i = 0; i < SIZE; i++)
        printf("%6d %6d\n", x[i], y[i]);

    ff_iir_filter_free_coeffsp(&fcoeffs);
    ff_iir_filter_free_statep(&fstate);
    return 0;
}

Ejemplo n.º 2

Archivo: psymodel.c Proyecto: VFR-maniac/ffmpeg

av_cold void ff_psy_preprocess_end(struct FFPsyPreprocessContext *ctx)
{
    int i;
    ff_iir_filter_free_coeffsp(&ctx->fcoeffs);
    if (ctx->fstate)
        for (i = 0; i < ctx->avctx->channels; i++)
            ff_iir_filter_free_statep(&ctx->fstate[i]);
    av_freep(&ctx->fstate);
    av_free(ctx);
}