Function alloc_set_opts

libswscale/utils.c:74–96

* Allocate and return an SwsContext without performing initialization. */

 * Allocate and return an SwsContext without performing initialization.
 */
static SwsContext *alloc_set_opts(int srcW, int srcH, enum AVPixelFormat srcFormat,
                                  int dstW, int dstH, enum AVPixelFormat dstFormat,
                                  int flags, const double *param)
{
    SwsContext *sws = sws_alloc_context();
    if (!sws)
        return NULL;

    sws->flags = flags;
    sws->src_w = srcW;
    sws->src_h = srcH;
    sws->dst_w = dstW;
    sws->dst_h      = dstH;
    sws->src_format = srcFormat;
    sws->dst_format = dstFormat;

    if (param) {
        sws->scaler_params[0] = param[0];
        sws->scaler_params[1] = param[1];
    }

    return sws;
}

int ff_shuffle_filter_coefficients(SwsInternal *c, int *filterPos,
                                   int filterSize, int16_t *filter,