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libavcodec/arm/aac.h

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00001 /*
00002  * Copyright (c) 2010 Mans Rullgard <mans@mansr.com>
00003  *
00004  * This file is part of FFmpeg.
00005  *
00006  * FFmpeg is free software; you can redistribute it and/or
00007  * modify it under the terms of the GNU Lesser General Public
00008  * License as published by the Free Software Foundation; either
00009  * version 2.1 of the License, or (at your option) any later version.
00010  *
00011  * FFmpeg is distributed in the hope that it will be useful,
00012  * but WITHOUT ANY WARRANTY; without even the implied warranty of
00013  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
00014  * Lesser General Public License for more details.
00015  *
00016  * You should have received a copy of the GNU Lesser General Public
00017  * License along with FFmpeg; if not, write to the Free Software
00018  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
00019  */
00020 
00021 #ifndef AVCODEC_ARM_AAC_H
00022 #define AVCODEC_ARM_AAC_H
00023 
00024 #include "config.h"
00025 
00026 #if HAVE_NEON && HAVE_INLINE_ASM
00027 
00028 #define VMUL2 VMUL2
00029 static inline float *VMUL2(float *dst, const float *v, unsigned idx,
00030                            const float *scale)
00031 {
00032     unsigned v0, v1;
00033     __asm__ volatile ("ubfx     %0,  %4,  #0, #4      \n\t"
00034                       "ubfx     %1,  %4,  #4, #4      \n\t"
00035                       "ldr      %0,  [%3, %0, lsl #2] \n\t"
00036                       "ldr      %1,  [%3, %1, lsl #2] \n\t"
00037                       "vld1.32  {d1[]},   [%5,:32]    \n\t"
00038                       "vmov     d0,  %0,  %1          \n\t"
00039                       "vmul.f32 d0,  d0,  d1          \n\t"
00040                       "vst1.32  {d0},     [%2,:64]!   \n\t"
00041                       : "=&r"(v0), "=&r"(v1), "+r"(dst)
00042                       : "r"(v), "r"(idx), "r"(scale)
00043                       : "d0", "d1");
00044     return dst;
00045 }
00046 
00047 #define VMUL4 VMUL4
00048 static inline float *VMUL4(float *dst, const float *v, unsigned idx,
00049                            const float *scale)
00050 {
00051     unsigned v0, v1, v2, v3;
00052     __asm__ volatile ("ubfx     %0,  %6,  #0, #2      \n\t"
00053                       "ubfx     %1,  %6,  #2, #2      \n\t"
00054                       "ldr      %0,  [%5, %0, lsl #2] \n\t"
00055                       "ubfx     %2,  %6,  #4, #2      \n\t"
00056                       "ldr      %1,  [%5, %1, lsl #2] \n\t"
00057                       "ubfx     %3,  %6,  #6, #2      \n\t"
00058                       "ldr      %2,  [%5, %2, lsl #2] \n\t"
00059                       "vmov     d0,  %0,  %1          \n\t"
00060                       "ldr      %3,  [%5, %3, lsl #2] \n\t"
00061                       "vld1.32  {d2[],d3[]},[%7,:32]  \n\t"
00062                       "vmov     d1,  %2,  %3          \n\t"
00063                       "vmul.f32 q0,  q0,  q1          \n\t"
00064                       "vst1.32  {q0},     [%4,:128]!  \n\t"
00065                       : "=&r"(v0), "=&r"(v1), "=&r"(v2), "=&r"(v3), "+r"(dst)
00066                       : "r"(v), "r"(idx), "r"(scale)
00067                       : "d0", "d1", "d2", "d3");
00068     return dst;
00069 }
00070 
00071 #define VMUL2S VMUL2S
00072 static inline float *VMUL2S(float *dst, const float *v, unsigned idx,
00073                             unsigned sign, const float *scale)
00074 {
00075     unsigned v0, v1, v2, v3;
00076     __asm__ volatile ("ubfx     %0,  %6,  #0, #4      \n\t"
00077                       "ubfx     %1,  %6,  #4, #4      \n\t"
00078                       "ldr      %0,  [%5, %0, lsl #2] \n\t"
00079                       "lsl      %2,  %8,  #30         \n\t"
00080                       "ldr      %1,  [%5, %1, lsl #2] \n\t"
00081                       "lsl      %3,  %8,  #31         \n\t"
00082                       "vmov     d0,  %0,  %1          \n\t"
00083                       "bic      %2,  %2,  #1<<30      \n\t"
00084                       "vld1.32  {d1[]},   [%7,:32]    \n\t"
00085                       "vmov     d2,  %2,  %3          \n\t"
00086                       "veor     d0,  d0,  d2          \n\t"
00087                       "vmul.f32 d0,  d0,  d1          \n\t"
00088                       "vst1.32  {d0},     [%4,:64]!   \n\t"
00089                       : "=&r"(v0), "=&r"(v1), "=&r"(v2), "=&r"(v3), "+r"(dst)
00090                       : "r"(v), "r"(idx), "r"(scale), "r"(sign)
00091                       : "d0", "d1", "d2");
00092     return dst;
00093 }
00094 
00095 #define VMUL4S VMUL4S
00096 static inline float *VMUL4S(float *dst, const float *v, unsigned idx,
00097                             unsigned sign, const float *scale)
00098 {
00099     unsigned v0, v1, v2, v3, nz;
00100     __asm__ volatile ("vld1.32  {d2[],d3[]},[%9,:32]  \n\t"
00101                       "ubfx     %0,  %8,  #0, #2      \n\t"
00102                       "ubfx     %1,  %8,  #2, #2      \n\t"
00103                       "ldr      %0,  [%7, %0, lsl #2] \n\t"
00104                       "ubfx     %2,  %8,  #4, #2      \n\t"
00105                       "ldr      %1,  [%7, %1, lsl #2] \n\t"
00106                       "ubfx     %3,  %8,  #6, #2      \n\t"
00107                       "ldr      %2,  [%7, %2, lsl #2] \n\t"
00108                       "vmov     d0,  %0,  %1          \n\t"
00109                       "ldr      %3,  [%7, %3, lsl #2] \n\t"
00110                       "lsr      %6,  %8,  #12         \n\t"
00111                       "rbit     %6,  %6               \n\t"
00112                       "vmov     d1,  %2,  %3          \n\t"
00113                       "lsls     %6,  %6,  #1          \n\t"
00114                       "and      %0,  %5,  #1<<31      \n\t"
00115                       "lslcs    %5,  %5,  #1          \n\t"
00116                       "lsls     %6,  %6,  #1          \n\t"
00117                       "and      %1,  %5,  #1<<31      \n\t"
00118                       "lslcs    %5,  %5,  #1          \n\t"
00119                       "lsls     %6,  %6,  #1          \n\t"
00120                       "and      %2,  %5,  #1<<31      \n\t"
00121                       "lslcs    %5,  %5,  #1          \n\t"
00122                       "vmov     d4,  %0,  %1          \n\t"
00123                       "and      %3,  %5,  #1<<31      \n\t"
00124                       "vmov     d5,  %2,  %3          \n\t"
00125                       "veor     q0,  q0,  q2          \n\t"
00126                       "vmul.f32 q0,  q0,  q1          \n\t"
00127                       "vst1.32  {q0},     [%4,:128]!  \n\t"
00128                       : "=&r"(v0), "=&r"(v1), "=&r"(v2), "=&r"(v3), "+r"(dst),
00129                         "+r"(sign), "=r"(nz)
00130                       : "r"(v), "r"(idx), "r"(scale)
00131                       : "d0", "d1", "d2", "d3", "d4", "d5");
00132     return dst;
00133 }
00134 
00135 #endif /* HAVE_NEON && HAVE_INLINE_ASM */
00136 
00137 #endif /* AVCODEC_ARM_AAC_H */

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