• Main Page
  • Related Pages
  • Modules
  • Data Structures
  • Files
  • File List
  • Globals

libavcodec/arm/aac.h

Go to the documentation of this file.
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__ ("ubfx     %0,  %6,  #0, #4      \n\t"
00034              "ubfx     %1,  %6,  #4, #4      \n\t"
00035              "ldr      %0,  [%5, %0, lsl #2] \n\t"
00036              "ldr      %1,  [%5, %1, lsl #2] \n\t"
00037              "vld1.32  {d1[]},   [%7,: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), "=m"(dst[0]), "=m"(dst[1])
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__ ("ubfx     %0,  %10, #0, #2      \n\t"
00053              "ubfx     %1,  %10, #2, #2      \n\t"
00054              "ldr      %0,  [%9, %0, lsl #2] \n\t"
00055              "ubfx     %2,  %10, #4, #2      \n\t"
00056              "ldr      %1,  [%9, %1, lsl #2] \n\t"
00057              "ubfx     %3,  %10, #6, #2      \n\t"
00058              "ldr      %2,  [%9, %2, lsl #2] \n\t"
00059              "vmov     d0,  %0,  %1          \n\t"
00060              "ldr      %3,  [%9, %3, lsl #2] \n\t"
00061              "vld1.32  {d2[],d3[]},[%11,: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                "=m"(dst[0]), "=m"(dst[1]), "=m"(dst[2]), "=m"(dst[3])
00067              : "r"(v), "r"(idx), "r"(scale)
00068              : "d0", "d1", "d2", "d3");
00069     return dst;
00070 }
00071 
00072 #define VMUL2S VMUL2S
00073 static inline float *VMUL2S(float *dst, const float *v, unsigned idx,
00074                             unsigned sign, const float *scale)
00075 {
00076     unsigned v0, v1, v2, v3;
00077     __asm__ ("ubfx     %0,  %8,  #0, #4      \n\t"
00078              "ubfx     %1,  %8,  #4, #4      \n\t"
00079              "ldr      %0,  [%7, %0, lsl #2] \n\t"
00080              "lsl      %2,  %10, #30         \n\t"
00081              "ldr      %1,  [%7, %1, lsl #2] \n\t"
00082              "lsl      %3,  %10, #31         \n\t"
00083              "vmov     d0,  %0,  %1          \n\t"
00084              "bic      %2,  %2,  #1<<30      \n\t"
00085              "vld1.32  {d1[]},   [%9,:32]    \n\t"
00086              "vmov     d2,  %2,  %3          \n\t"
00087              "veor     d0,  d0,  d2          \n\t"
00088              "vmul.f32 d0,  d0,  d1          \n\t"
00089              "vst1.32  {d0},     [%4,:64]!   \n\t"
00090              : "=&r"(v0), "=&r"(v1), "=&r"(v2), "=&r"(v3), "+r"(dst),
00091                "=m"(dst[0]), "=m"(dst[1])
00092              : "r"(v), "r"(idx), "r"(scale), "r"(sign)
00093              : "d0", "d1", "d2");
00094     return dst;
00095 }
00096 
00097 #define VMUL4S VMUL4S
00098 static inline float *VMUL4S(float *dst, const float *v, unsigned idx,
00099                             unsigned sign, const float *scale)
00100 {
00101     unsigned v0, v1, v2, v3, nz;
00102     __asm__ ("vld1.32  {d2[],d3[]},[%13,:32] \n\t"
00103              "ubfx     %0,  %12, #0, #2      \n\t"
00104              "ubfx     %1,  %12, #2, #2      \n\t"
00105              "ldr      %0,  [%11,%0, lsl #2] \n\t"
00106              "ubfx     %2,  %12, #4, #2      \n\t"
00107              "ldr      %1,  [%11,%1, lsl #2] \n\t"
00108              "ubfx     %3,  %12, #6, #2      \n\t"
00109              "ldr      %2,  [%11,%2, lsl #2] \n\t"
00110              "vmov     d0,  %0,  %1          \n\t"
00111              "ldr      %3,  [%11,%3, lsl #2] \n\t"
00112              "lsr      %6,  %12, #12         \n\t"
00113              "rbit     %6,  %6               \n\t"
00114              "vmov     d1,  %2,  %3          \n\t"
00115              "lsls     %6,  %6,  #1          \n\t"
00116              "and      %0,  %5,  #1<<31      \n\t"
00117              "it       cs                    \n\t"
00118              "lslcs    %5,  %5,  #1          \n\t"
00119              "lsls     %6,  %6,  #1          \n\t"
00120              "and      %1,  %5,  #1<<31      \n\t"
00121              "it       cs                    \n\t"
00122              "lslcs    %5,  %5,  #1          \n\t"
00123              "lsls     %6,  %6,  #1          \n\t"
00124              "and      %2,  %5,  #1<<31      \n\t"
00125              "it       cs                    \n\t"
00126              "lslcs    %5,  %5,  #1          \n\t"
00127              "vmov     d4,  %0,  %1          \n\t"
00128              "and      %3,  %5,  #1<<31      \n\t"
00129              "vmov     d5,  %2,  %3          \n\t"
00130              "veor     q0,  q0,  q2          \n\t"
00131              "vmul.f32 q0,  q0,  q1          \n\t"
00132              "vst1.32  {q0},     [%4,:128]!  \n\t"
00133              : "=&r"(v0), "=&r"(v1), "=&r"(v2), "=&r"(v3), "+r"(dst),
00134                "+r"(sign), "=r"(nz),
00135                "=m"(dst[0]), "=m"(dst[1]), "=m"(dst[2]), "=m"(dst[3])
00136              : "r"(v), "r"(idx), "r"(scale)
00137              : "cc", "d0", "d1", "d2", "d3", "d4", "d5");
00138     return dst;
00139 }
00140 
00141 #endif /* HAVE_NEON && HAVE_INLINE_ASM */
00142 
00143 #endif /* AVCODEC_ARM_AAC_H */
Generated on Fri Feb 1 2013 14:34:28 for FFmpeg by doxygen 1.7.1