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diff --git a/libavcodec/arm/mpegvideo_armv5te_s.S b/libavcodec/arm/mpegvideo_armv5te_s.S
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+/*
+ * Optimization of some functions from mpegvideo.c for armv5te
+ * Copyright (c) 2007 Siarhei Siamashka <ssvb@users.sourceforge.net>
+ *
+ * This file is part of FFmpeg.
+ *
+ * FFmpeg is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * FFmpeg is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with FFmpeg; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+#include "config.h"
+#include "asm.S"
+
+/*
+ * Special optimized version of dct_unquantize_h263_helper_c, it
+ * requires the block to be at least 8 bytes aligned, and may process
+ * more elements than requested. But it is guaranteed to never
+ * process more than 64 elements provided that count argument is <= 64,
+ * so it is safe. This function is optimized for a common distribution
+ * of values for nCoeffs (they are mostly multiple of 8 plus one or
+ * two extra elements). So this function processes data as 8 elements
+ * per loop iteration and contains optional 2 elements processing in
+ * the end.
+ *
+ * Inner loop should take 6 cycles per element on arm926ej-s (Nokia 770)
+ */
+function ff_dct_unquantize_h263_armv5te, export=1
+ push {r4-r9,lr}
+ mov ip, #0
+ subs r3, r3, #2
+ ble 2f
+ ldrd r4, [r0, #0]
+1:
+ ldrd r6, [r0, #8]
+
+ rsbs r9, ip, r4, asr #16
+ addgt r9, r2, #0
+ rsblt r9, r2, #0
+ smlatbne r9, r4, r1, r9
+
+ rsbs lr, ip, r5, asr #16
+ addgt lr, r2, #0
+ rsblt lr, r2, #0
+ smlatbne lr, r5, r1, lr
+
+ rsbs r8, ip, r4, asl #16
+ addgt r8, r2, #0
+ rsblt r8, r2, #0
+ smlabbne r4, r4, r1, r8
+
+ rsbs r8, ip, r5, asl #16
+ addgt r8, r2, #0
+ rsblt r8, r2, #0
+ smlabbne r5, r5, r1, r8
+
+ strh r4, [r0], #2
+ strh r9, [r0], #2
+ strh r5, [r0], #2
+ strh lr, [r0], #2
+
+ rsbs r9, ip, r6, asr #16
+ addgt r9, r2, #0
+ rsblt r9, r2, #0
+ smlatbne r9, r6, r1, r9
+
+ rsbs lr, ip, r7, asr #16
+ addgt lr, r2, #0
+ rsblt lr, r2, #0
+ smlatbne lr, r7, r1, lr
+
+ rsbs r8, ip, r6, asl #16
+ addgt r8, r2, #0
+ rsblt r8, r2, #0
+ smlabbne r6, r6, r1, r8
+
+ rsbs r8, ip, r7, asl #16
+ addgt r8, r2, #0
+ rsblt r8, r2, #0
+ smlabbne r7, r7, r1, r8
+
+ strh r6, [r0], #2
+ strh r9, [r0], #2
+ strh r7, [r0], #2
+ strh lr, [r0], #2
+
+ subs r3, r3, #8
+ ldrgtd r4, [r0, #0] /* load data early to avoid load/use pipeline stall */
+ bgt 1b
+
+ adds r3, r3, #2
+ pople {r4-r9,pc}
+2:
+ ldrsh r9, [r0, #0]
+ ldrsh lr, [r0, #2]
+ mov r8, r2
+ cmp r9, #0
+ rsblt r8, r2, #0
+ smlabbne r9, r9, r1, r8
+ mov r8, r2
+ cmp lr, #0
+ rsblt r8, r2, #0
+ smlabbne lr, lr, r1, r8
+ strh r9, [r0], #2
+ strh lr, [r0], #2
+ pop {r4-r9,pc}
+ .endfunc