| /* |
| * Copyright (c) 2011 Mans Rullgard <mans@mansr.com> |
| * |
| * This file is part of Libav. |
| * |
| * Libav 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. |
| * |
| * Libav 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 Libav; if not, write to the Free Software |
| * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA |
| */ |
| |
| #ifndef AVCODEC_ARM_DCA_H |
| #define AVCODEC_ARM_DCA_H |
| |
| #include <stdint.h> |
| #include "config.h" |
| #include "libavutil/intmath.h" |
| |
| #if HAVE_ARMV6 && HAVE_INLINE_ASM && AV_GCC_VERSION_AT_LEAST(4,4) |
| |
| #define decode_blockcodes decode_blockcodes |
| static inline int decode_blockcodes(int code1, int code2, int levels, |
| int *values) |
| { |
| int v0, v1, v2, v3, v4, v5; |
| |
| __asm__ ("smmul %8, %14, %18 \n" |
| "smmul %11, %15, %18 \n" |
| "smlabb %14, %8, %17, %14 \n" |
| "smlabb %15, %11, %17, %15 \n" |
| "smmul %9, %8, %18 \n" |
| "smmul %12, %11, %18 \n" |
| "sub %14, %14, %16, lsr #1 \n" |
| "sub %15, %15, %16, lsr #1 \n" |
| "smlabb %8, %9, %17, %8 \n" |
| "smlabb %11, %12, %17, %11 \n" |
| "smmul %10, %9, %18 \n" |
| "smmul %13, %12, %18 \n" |
| "str %14, %0 \n" |
| "str %15, %4 \n" |
| "sub %8, %8, %16, lsr #1 \n" |
| "sub %11, %11, %16, lsr #1 \n" |
| "smlabb %9, %10, %17, %9 \n" |
| "smlabb %12, %13, %17, %12 \n" |
| "smmul %14, %10, %18 \n" |
| "smmul %15, %13, %18 \n" |
| "str %8, %1 \n" |
| "str %11, %5 \n" |
| "sub %9, %9, %16, lsr #1 \n" |
| "sub %12, %12, %16, lsr #1 \n" |
| "smlabb %10, %14, %17, %10 \n" |
| "smlabb %13, %15, %17, %13 \n" |
| "str %9, %2 \n" |
| "str %12, %6 \n" |
| "sub %10, %10, %16, lsr #1 \n" |
| "sub %13, %13, %16, lsr #1 \n" |
| "str %10, %3 \n" |
| "str %13, %7 \n" |
| : "=m"(values[0]), "=m"(values[1]), |
| "=m"(values[2]), "=m"(values[3]), |
| "=m"(values[4]), "=m"(values[5]), |
| "=m"(values[6]), "=m"(values[7]), |
| "=&r"(v0), "=&r"(v1), "=&r"(v2), |
| "=&r"(v3), "=&r"(v4), "=&r"(v5), |
| "+&r"(code1), "+&r"(code2) |
| : "r"(levels - 1), "r"(-levels), "r"(ff_inverse[levels])); |
| |
| return code1 | code2; |
| } |
| |
| #endif |
| |
| #if HAVE_NEON && HAVE_INLINE_ASM && HAVE_ASM_MOD_Y |
| |
| #define int8x8_fmul_int32 int8x8_fmul_int32 |
| static inline void int8x8_fmul_int32(float *dst, const int8_t *src, int scale) |
| { |
| __asm__ ("vcvt.f32.s32 %2, %2, #4 \n" |
| "vld1.8 {d0}, [%1,:64] \n" |
| "vmovl.s8 q0, d0 \n" |
| "vmovl.s16 q1, d1 \n" |
| "vmovl.s16 q0, d0 \n" |
| "vcvt.f32.s32 q0, q0 \n" |
| "vcvt.f32.s32 q1, q1 \n" |
| "vmul.f32 q0, q0, %y2 \n" |
| "vmul.f32 q1, q1, %y2 \n" |
| "vst1.32 {q0-q1}, [%m0,:128] \n" |
| : "=Um"(*(float (*)[8])dst) |
| : "r"(src), "x"(scale) |
| : "d0", "d1", "d2", "d3"); |
| } |
| |
| #endif |
| |
| #endif /* AVCODEC_ARM_DCA_H */ |
