int av_image_get_linesize(enum AVPixelFormat pix_fmt, int width, int plane) { const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(pix_fmt); int max_step [4]; /* max pixel step for each plane */ int max_step_comp[4]; /* the component for each plane which has the max pixel step */ if ((unsigned)pix_fmt >= AV_PIX_FMT_NB || desc->flags & AV_PIX_FMT_FLAG_HWACCEL) return AVERROR(EINVAL); av_image_fill_max_pixsteps(max_step, max_step_comp, desc); return image_get_linesize(width, plane, max_step[plane], max_step_comp[plane], desc); }