ImgReSampleContext *img_resample_full_init(int owidth, int oheight, int iwidth, int iheight, int topBand, int bottomBand, int leftBand, int rightBand, int padtop, int padbottom, int padleft, int padright) { ImgReSampleContext *s; s = av_mallocz(sizeof(ImgReSampleContext)); if (!s) if((unsigned)owidth >= UINT_MAX / (LINE_BUF_HEIGHT + NB_TAPS)) s->line_buf = av_mallocz(owidth * (LINE_BUF_HEIGHT + NB_TAPS)); if (!s->line_buf) goto fail; s->owidth = owidth; s->oheight = oheight; s->iwidth = iwidth; s->iheight = iheight; s->topBand = topBand; s->bottomBand = bottomBand; s->leftBand = leftBand; s->rightBand = rightBand; s->padtop = padtop; s->padbottom = padbottom; s->padleft = padleft; s->padright = padright; s->pad_owidth = owidth - (padleft + padright); s->pad_oheight = oheight - (padtop + padbottom); s->h_incr = ((iwidth - leftBand - rightBand) * POS_FRAC) / s->pad_owidth; s->v_incr = ((iheight - topBand - bottomBand) * POS_FRAC) / s->pad_oheight; av_build_filter(&s->h_filters[0][0], (float) s->pad_owidth / (float) (iwidth - leftBand - rightBand), NB_TAPS, NB_PHASES, 1<<FILTER_BITS, 0); av_build_filter(&s->v_filters[0][0], (float) s->pad_oheight / (float) (iheight - topBand - bottomBand), NB_TAPS, NB_PHASES, 1<<FILTER_BITS, 0); return s; fail: av_free(s); }