FFmpeg
sbcdsp_init_arm.c
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1 /*
2  * Bluetooth low-complexity, subband codec (SBC)
3  *
4  * Copyright (C) 2017 Aurelien Jacobs <aurel@gnuage.org>
5  * Copyright (C) 2008-2010 Nokia Corporation
6  * Copyright (C) 2004-2010 Marcel Holtmann <marcel@holtmann.org>
7  * Copyright (C) 2004-2005 Henryk Ploetz <henryk@ploetzli.ch>
8  * Copyright (C) 2005-2006 Brad Midgley <bmidgley@xmission.com>
9  *
10  * This file is part of FFmpeg.
11  *
12  * FFmpeg is free software; you can redistribute it and/or
13  * modify it under the terms of the GNU Lesser General Public
14  * License as published by the Free Software Foundation; either
15  * version 2.1 of the License, or (at your option) any later version.
16  *
17  * FFmpeg is distributed in the hope that it will be useful,
18  * but WITHOUT ANY WARRANTY; without even the implied warranty of
19  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
20  * Lesser General Public License for more details.
21  *
22  * You should have received a copy of the GNU Lesser General Public
23  * License along with FFmpeg; if not, write to the Free Software
24  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
25  */
26 
27 /**
28  * @file
29  * SBC ARMv6 optimization for some basic "building bricks"
30  */
31 
32 #include "libavutil/attributes.h"
33 #include "libavutil/cpu.h"
34 #include "libavutil/mem_internal.h"
35 #include "libavutil/arm/cpu.h"
36 #include "libavcodec/sbcdsp.h"
37 
38 void ff_sbc_analyze_4_armv6(const int16_t *in, int32_t *out, const int16_t *consts);
39 void ff_sbc_analyze_8_armv6(const int16_t *in, int32_t *out, const int16_t *consts);
40 
41 void ff_sbc_analyze_4_neon(const int16_t *in, int32_t *out, const int16_t *consts);
42 void ff_sbc_analyze_8_neon(const int16_t *in, int32_t *out, const int16_t *consts);
43 void ff_sbc_calc_scalefactors_neon(int32_t sb_sample_f[16][2][8],
44  uint32_t scale_factor[2][8],
45  int blocks, int channels, int subbands);
46 int ff_sbc_calc_scalefactors_j_neon(int32_t sb_sample_f[16][2][8],
47  uint32_t scale_factor[2][8],
48  int blocks, int subbands);
49 int ff_sbc_enc_process_input_4s_neon(int position, const uint8_t *pcm,
50  int16_t X[2][SBC_X_BUFFER_SIZE],
51  int nsamples, int nchannels);
52 int ff_sbc_enc_process_input_8s_neon(int position, const uint8_t *pcm,
53  int16_t X[2][SBC_X_BUFFER_SIZE],
54  int nsamples, int nchannels);
55 
57  8, 4, 2, 1, 128, 64, 32, 16
58 };
59 
60 #if HAVE_BIGENDIAN
61 #define PERM(a, b, c, d) { \
62  (a * 2) + 1, (a * 2) + 0, \
63  (b * 2) + 1, (b * 2) + 0, \
64  (c * 2) + 1, (c * 2) + 0, \
65  (d * 2) + 1, (d * 2) + 0 \
66  }
67 #else
68 #define PERM(a, b, c, d) { \
69  (a * 2) + 0, (a * 2) + 1, \
70  (b * 2) + 0, (b * 2) + 1, \
71  (c * 2) + 0, (c * 2) + 1, \
72  (d * 2) + 0, (d * 2) + 1 \
73  }
74 #endif
75 
77  PERM(7, 3, 6, 4),
78  PERM(0, 2, 1, 5)
79 };
80 
82  PERM(15, 7, 14, 8),
83  PERM(13, 9, 12, 10),
84  PERM(11, 3, 6, 0),
85  PERM( 5, 1, 4, 2)
86 };
87 
88 av_cold void ff_sbcdsp_init_arm(SBCDSPContext *s)
89 {
91 
92  if (have_armv6(cpu_flags)) {
93  s->sbc_analyze_4 = ff_sbc_analyze_4_armv6;
94  s->sbc_analyze_8 = ff_sbc_analyze_8_armv6;
95  }
96 
97  if (have_neon(cpu_flags)) {
98  s->sbc_analyze_4 = ff_sbc_analyze_4_neon;
99  s->sbc_analyze_8 = ff_sbc_analyze_8_neon;
100  s->sbc_calc_scalefactors = ff_sbc_calc_scalefactors_neon;
101  s->sbc_calc_scalefactors_j = ff_sbc_calc_scalefactors_j_neon;
102  if (s->increment != 1) {
103  s->sbc_enc_process_input_4s = ff_sbc_enc_process_input_4s_neon;
104  s->sbc_enc_process_input_8s = ff_sbc_enc_process_input_8s_neon;
105  }
106  }
107 }
PERM
#define PERM(a, b, c, d)
Definition: sbcdsp_init_arm.c:68
mem_internal.h
out
FILE * out
Definition: movenc.c:54
av_get_cpu_flags
int av_get_cpu_flags(void)
Return the flags which specify extensions supported by the CPU.
Definition: cpu.c:96
subbands
subbands
Definition: aptx.h:39
cpu_flags
static atomic_int cpu_flags
Definition: cpu.c:50
ff_sbc_analyze_8_neon
void ff_sbc_analyze_8_neon(const int16_t *in, int32_t *out, const int16_t *consts)
sbcdsp.h
X
@ X
Definition: vf_addroi.c:26
av_cold
#define av_cold
Definition: attributes.h:90
ff_sbc_analyze_4_neon
void ff_sbc_analyze_4_neon(const int16_t *in, int32_t *out, const int16_t *consts)
s
#define s(width, name)
Definition: cbs_vp9.c:257
ff_sbc_enc_process_input_8s_neon
int ff_sbc_enc_process_input_8s_neon(int position, const uint8_t *pcm, int16_t X[2][SBC_X_BUFFER_SIZE], int nsamples, int nchannels)
channels
channels
Definition: aptx.h:33
ff_sbc_calc_scalefactors_j_neon
int ff_sbc_calc_scalefactors_j_neon(int32_t sb_sample_f[16][2][8], uint32_t scale_factor[2][8], int blocks, int subbands)
ff_sbc_analyze_4_armv6
void ff_sbc_analyze_4_armv6(const int16_t *in, int32_t *out, const int16_t *consts)
cpu.h
ff_sbc_analyze_8_armv6
void ff_sbc_analyze_8_armv6(const int16_t *in, int32_t *out, const int16_t *consts)
SBC_ALIGN
#define SBC_ALIGN
Definition: sbc.h:80
cpu.h
have_neon
#define have_neon(flags)
Definition: cpu.h:26
ff_sbc_input_perm_8
uint8_t ff_sbc_input_perm_8[4][8]
Definition: sbcdsp_init_arm.c:81
attributes.h
ff_sbcdsp_joint_bits_mask
int32_t ff_sbcdsp_joint_bits_mask[8]
Definition: sbcdsp_init_arm.c:56
ff_sbc_input_perm_4
uint8_t ff_sbc_input_perm_4[2][8]
Definition: sbcdsp_init_arm.c:76
DECLARE_ALIGNED
#define DECLARE_ALIGNED(n, t, v)
Definition: mem.h:116
SBC_X_BUFFER_SIZE
#define SBC_X_BUFFER_SIZE
Definition: sbcdsp.h:41
ff_sbcdsp_init_arm
av_cold void ff_sbcdsp_init_arm(SBCDSPContext *s)
Definition: sbcdsp_init_arm.c:88
ff_sbc_enc_process_input_4s_neon
int ff_sbc_enc_process_input_4s_neon(int position, const uint8_t *pcm, int16_t X[2][SBC_X_BUFFER_SIZE], int nsamples, int nchannels)
have_armv6
#define have_armv6(flags)
Definition: cpu.h:26
int32_t
int32_t
Definition: audioconvert.c:56
ff_sbc_calc_scalefactors_neon
void ff_sbc_calc_scalefactors_neon(int32_t sb_sample_f[16][2][8], uint32_t scale_factor[2][8], int blocks, int channels, int subbands)