arm/aac.h
Go to the documentation of this file.
1 /*
2  * Copyright (c) 2010 Mans Rullgard <mans@mansr.com>
3  *
4  * This file is part of FFmpeg.
5  *
6  * FFmpeg 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.
10  *
11  * FFmpeg 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.
15  *
16  * You should have received a copy of the GNU Lesser General Public
17  * License along with FFmpeg; if not, write to the Free Software
18  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
19  */
20 
21 #ifndef AVCODEC_ARM_AAC_H
22 #define AVCODEC_ARM_AAC_H
23 
24 #include "config.h"
25 
26 #if HAVE_NEON_INLINE
27 
28 #define VMUL2 VMUL2
29 static inline float *VMUL2(float *dst, const float *v, unsigned idx,
30  const float *scale)
31 {
32  unsigned v0, v1;
33  __asm__ ("ubfx %0, %6, #0, #4 \n\t"
34  "ubfx %1, %6, #4, #4 \n\t"
35  "ldr %0, [%5, %0, lsl #2] \n\t"
36  "ldr %1, [%5, %1, lsl #2] \n\t"
37  "vld1.32 {d1[]}, [%7,:32] \n\t"
38  "vmov d0, %0, %1 \n\t"
39  "vmul.f32 d0, d0, d1 \n\t"
40  "vst1.32 {d0}, [%2,:64]! \n\t"
41  : "=&r"(v0), "=&r"(v1), "+r"(dst), "=m"(dst[0]), "=m"(dst[1])
42  : "r"(v), "r"(idx), "r"(scale)
43  : "d0", "d1");
44  return dst;
45 }
46 
47 #define VMUL4 VMUL4
48 static inline float *VMUL4(float *dst, const float *v, unsigned idx,
49  const float *scale)
50 {
51  unsigned v0, v1, v2, v3;
52  __asm__ ("ubfx %0, %10, #0, #2 \n\t"
53  "ubfx %1, %10, #2, #2 \n\t"
54  "ldr %0, [%9, %0, lsl #2] \n\t"
55  "ubfx %2, %10, #4, #2 \n\t"
56  "ldr %1, [%9, %1, lsl #2] \n\t"
57  "ubfx %3, %10, #6, #2 \n\t"
58  "ldr %2, [%9, %2, lsl #2] \n\t"
59  "vmov d0, %0, %1 \n\t"
60  "ldr %3, [%9, %3, lsl #2] \n\t"
61  "vld1.32 {d2[],d3[]},[%11,:32] \n\t"
62  "vmov d1, %2, %3 \n\t"
63  "vmul.f32 q0, q0, q1 \n\t"
64  "vst1.32 {q0}, [%4,:128]! \n\t"
65  : "=&r"(v0), "=&r"(v1), "=&r"(v2), "=&r"(v3), "+r"(dst),
66  "=m"(dst[0]), "=m"(dst[1]), "=m"(dst[2]), "=m"(dst[3])
67  : "r"(v), "r"(idx), "r"(scale)
68  : "d0", "d1", "d2", "d3");
69  return dst;
70 }
71 
72 #define VMUL2S VMUL2S
73 static inline float *VMUL2S(float *dst, const float *v, unsigned idx,
74  unsigned sign, const float *scale)
75 {
76  unsigned v0, v1, v2, v3;
77  __asm__ ("ubfx %0, %8, #0, #4 \n\t"
78  "ubfx %1, %8, #4, #4 \n\t"
79  "ldr %0, [%7, %0, lsl #2] \n\t"
80  "lsl %2, %10, #30 \n\t"
81  "ldr %1, [%7, %1, lsl #2] \n\t"
82  "lsl %3, %10, #31 \n\t"
83  "vmov d0, %0, %1 \n\t"
84  "bic %2, %2, #1<<30 \n\t"
85  "vld1.32 {d1[]}, [%9,:32] \n\t"
86  "vmov d2, %2, %3 \n\t"
87  "veor d0, d0, d2 \n\t"
88  "vmul.f32 d0, d0, d1 \n\t"
89  "vst1.32 {d0}, [%4,:64]! \n\t"
90  : "=&r"(v0), "=&r"(v1), "=&r"(v2), "=&r"(v3), "+r"(dst),
91  "=m"(dst[0]), "=m"(dst[1])
92  : "r"(v), "r"(idx), "r"(scale), "r"(sign)
93  : "d0", "d1", "d2");
94  return dst;
95 }
96 
97 #define VMUL4S VMUL4S
98 static inline float *VMUL4S(float *dst, const float *v, unsigned idx,
99  unsigned sign, const float *scale)
100 {
101  unsigned v0, v1, v2, v3, nz;
102  __asm__ ("vld1.32 {d2[],d3[]},[%13,:32] \n\t"
103  "ubfx %0, %12, #0, #2 \n\t"
104  "ubfx %1, %12, #2, #2 \n\t"
105  "ldr %0, [%11,%0, lsl #2] \n\t"
106  "ubfx %2, %12, #4, #2 \n\t"
107  "ldr %1, [%11,%1, lsl #2] \n\t"
108  "ubfx %3, %12, #6, #2 \n\t"
109  "ldr %2, [%11,%2, lsl #2] \n\t"
110  "vmov d0, %0, %1 \n\t"
111  "ldr %3, [%11,%3, lsl #2] \n\t"
112  "lsr %6, %12, #12 \n\t"
113  "rbit %6, %6 \n\t"
114  "vmov d1, %2, %3 \n\t"
115  "lsls %6, %6, #1 \n\t"
116  "and %0, %5, #1<<31 \n\t"
117  "it cs \n\t"
118  "lslcs %5, %5, #1 \n\t"
119  "lsls %6, %6, #1 \n\t"
120  "and %1, %5, #1<<31 \n\t"
121  "it cs \n\t"
122  "lslcs %5, %5, #1 \n\t"
123  "lsls %6, %6, #1 \n\t"
124  "and %2, %5, #1<<31 \n\t"
125  "it cs \n\t"
126  "lslcs %5, %5, #1 \n\t"
127  "vmov d4, %0, %1 \n\t"
128  "and %3, %5, #1<<31 \n\t"
129  "vmov d5, %2, %3 \n\t"
130  "veor q0, q0, q2 \n\t"
131  "vmul.f32 q0, q0, q1 \n\t"
132  "vst1.32 {q0}, [%4,:128]! \n\t"
133  : "=&r"(v0), "=&r"(v1), "=&r"(v2), "=&r"(v3), "+r"(dst),
134  "+r"(sign), "=r"(nz),
135  "=m"(dst[0]), "=m"(dst[1]), "=m"(dst[2]), "=m"(dst[3])
136  : "r"(v), "r"(idx), "r"(scale)
137  : "cc", "d0", "d1", "d2", "d3", "d4", "d5");
138  return dst;
139 }
140 
141 #endif /* HAVE_NEON_INLINE */
142 
143 #endif /* AVCODEC_ARM_AAC_H */
VMUL4S
static float * VMUL4S(float *dst, const float *v, unsigned idx, unsigned sign, const float *scale)
Definition: libavcodec/aacdec.c:1335
v
float v
Definition: avf_showspectrum.c:88
VMUL2S
static float * VMUL2S(float *dst, const float *v, unsigned idx, unsigned sign, const float *scale)
Definition: libavcodec/aacdec.c:1318
VMUL2
static float * VMUL2(float *dst, const float *v, unsigned idx, const float *scale)
Definition: libavcodec/aacdec.c:1294
v0
#define v0
Definition: regdef.h:26
scale
Same thing on a dB scale
Definition: FFT of a Simple Sinusoid.m:36
dst
else dst[i][x+y *dst_stride[i]]
Definition: vf_mcdeint.c:160
VMUL4
static float * VMUL4(float *dst, const float *v, unsigned idx, const float *scale)
Definition: libavcodec/aacdec.c:1305
Generated on Fri Oct 31 2025 06:56:05 for FFmpeg by   doxygen 1.8.11