2 * Copyright (c) 2011 Mans Rullgard <mans@mansr.com>
4 * This file is part of Libav.
6 * Libav is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU Lesser General Public
8 * License as published by the Free Software Foundation; either
9 * version 2.1 of the License, or (at your option) any later version.
11 * Libav is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14 * Lesser General Public License for more details.
16 * You should have received a copy of the GNU Lesser General Public
17 * License along with Libav; if not, write to the Free Software
18 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
21 #ifndef AVCODEC_ARM_DCA_H
22 #define AVCODEC_ARM_DCA_H
26 #include "libavutil/intmath.h"
28 #if HAVE_ARMV6 && HAVE_INLINE_ASM && AV_GCC_VERSION_AT_LEAST(4,4)
30 #define decode_blockcodes decode_blockcodes
31 static inline int decode_blockcodes(int code1, int code2, int levels,
34 int v0, v1, v2, v3, v4, v5;
36 __asm__ ("smmul %8, %14, %18 \n"
37 "smmul %11, %15, %18 \n"
38 "smlabb %14, %8, %17, %14 \n"
39 "smlabb %15, %11, %17, %15 \n"
40 "smmul %9, %8, %18 \n"
41 "smmul %12, %11, %18 \n"
42 "sub %14, %14, %16, lsr #1 \n"
43 "sub %15, %15, %16, lsr #1 \n"
44 "smlabb %8, %9, %17, %8 \n"
45 "smlabb %11, %12, %17, %11 \n"
46 "smmul %10, %9, %18 \n"
47 "smmul %13, %12, %18 \n"
50 "sub %8, %8, %16, lsr #1 \n"
51 "sub %11, %11, %16, lsr #1 \n"
52 "smlabb %9, %10, %17, %9 \n"
53 "smlabb %12, %13, %17, %12 \n"
54 "smmul %14, %10, %18 \n"
55 "smmul %15, %13, %18 \n"
58 "sub %9, %9, %16, lsr #1 \n"
59 "sub %12, %12, %16, lsr #1 \n"
60 "smlabb %10, %14, %17, %10 \n"
61 "smlabb %13, %15, %17, %13 \n"
64 "sub %10, %10, %16, lsr #1 \n"
65 "sub %13, %13, %16, lsr #1 \n"
68 : "=m"(values[0]), "=m"(values[1]),
69 "=m"(values[2]), "=m"(values[3]),
70 "=m"(values[4]), "=m"(values[5]),
71 "=m"(values[6]), "=m"(values[7]),
72 "=&r"(v0), "=&r"(v1), "=&r"(v2),
73 "=&r"(v3), "=&r"(v4), "=&r"(v5),
74 "+&r"(code1), "+&r"(code2)
75 : "r"(levels - 1), "r"(-levels), "r"(ff_inverse[levels]));
82 #if HAVE_NEON && HAVE_INLINE_ASM && HAVE_ASM_MOD_Y
84 #define int8x8_fmul_int32 int8x8_fmul_int32
85 static inline void int8x8_fmul_int32(float *dst, const int8_t *src, int scale)
87 __asm__ ("vcvt.f32.s32 %2, %2, #4 \n"
88 "vld1.8 {d0}, [%1,:64] \n"
92 "vcvt.f32.s32 q0, q0 \n"
93 "vcvt.f32.s32 q1, q1 \n"
94 "vmul.f32 q0, q0, %y2 \n"
95 "vmul.f32 q1, q1, %y2 \n"
96 "vst1.32 {q0-q1}, [%m0,:128] \n"
97 : "=Um"(*(float (*)[8])dst)
98 : "r"(src), "x"(scale)
99 : "d0", "d1", "d2", "d3");
104 #endif /* AVCODEC_ARM_DCA_H */