973 	size_t len;  in jd_prepare()  local
997 		len = LDB_WORD(seg + 2);	/* Length field */  in jd_prepare()
998 		if (len <= 2 || (marker >> 8) != 0xFF) return JDR_FMT1;  in jd_prepare()
999 		len -= 2;			/* Segent content size */  in jd_prepare()
1000 		ofs += 4 + len;		/* Number of bytes loaded */  in jd_prepare()
1004 			if (len > JD_SZBUF) return JDR_MEM2;  in jd_prepare()
1005 			if (jd->infunc(jd, seg, len) != len) return JDR_INP;	/* Load segment data */  in jd_prepare()
1029 			if (len > JD_SZBUF) return JDR_MEM2;  in jd_prepare()
1030 			if (jd->infunc(jd, seg, len) != len) return JDR_INP;	/* Load segment data */  in jd_prepare()
1036 			if (len > JD_SZBUF) return JDR_MEM2;  in jd_prepare()
1037 			if (jd->infunc(jd, seg, len) != len) return JDR_INP;	/* Load segment data */  in jd_prepare()
1039 			rc = create_huffman_tbl(jd, seg, len);	/* Create huffman tables */  in jd_prepare()
1044 			if (len > JD_SZBUF) return JDR_MEM2;  in jd_prepare()
1045 			if (jd->infunc(jd, seg, len) != len) return JDR_INP;	/* Load segment data */  in jd_prepare()
1047 			rc = create_qt_tbl(jd, seg, len);	/* Create de-quantizer tables */  in jd_prepare()
1052 			if (len > JD_SZBUF) return JDR_MEM2;  in jd_prepare()
1053 			if (jd->infunc(jd, seg, len) != len) return JDR_INP;	/* Load segment data */  in jd_prepare()
1074 			len = n * 64 * 2 + 64;						/* Allocate buffer for IDCT and RGB output */  in jd_prepare()
1075 			if (len < 256) len = 256;					/* but at least 256 byte is required for IDCT */  in jd_prepare()
1076 …jd->workbuf = alloc_pool(jd, len);			/* and it may occupy a part of following MCU working buffer f…  in jd_prepare()
1106 			if (jd->infunc(jd, 0, len) != len) return JDR_INP;  in jd_prepare()