FFmpeg coverage

Directory: ../../../ffmpeg/
File: src/libavcodec/aac/aacdec_float.c
Date: 2024-05-04 02:01:39
Exec Total Coverage
Lines: 51 52 98.1%
Functions: 6 6 100.0%
Branches: 1 2 50.0%
Line Branch Exec Source
1 /*
2 * AAC decoder
3 * Copyright (c) 2005-2006 Oded Shimon ( ods15 ods15 dyndns org )
4 * Copyright (c) 2006-2007 Maxim Gavrilov ( maxim.gavrilov gmail com )
5 * Copyright (c) 2008-2013 Alex Converse <alex.converse@gmail.com>
6 *
7 * AAC LATM decoder
8 * Copyright (c) 2008-2010 Paul Kendall <paul@kcbbs.gen.nz>
9 * Copyright (c) 2010 Janne Grunau <janne-libav@jannau.net>
10 *
11 * AAC decoder fixed-point implementation
12 * Copyright (c) 2013
13 * MIPS Technologies, Inc., California.
14 *
15 * This file is part of FFmpeg.
16 *
17 * FFmpeg is free software; you can redistribute it and/or
18 * modify it under the terms of the GNU Lesser General Public
19 * License as published by the Free Software Foundation; either
20 * version 2.1 of the License, or (at your option) any later version.
21 *
22 * FFmpeg is distributed in the hope that it will be useful,
23 * but WITHOUT ANY WARRANTY; without even the implied warranty of
24 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
25 * Lesser General Public License for more details.
26 *
27 * You should have received a copy of the GNU Lesser General Public
28 * License along with FFmpeg; if not, write to the Free Software
29 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
30 */
31
32 #define USE_FIXED 0
33
34 #include "libavutil/thread.h"
35
36 #include "libavcodec/aac_defines.h"
37
38 #include "libavcodec/avcodec.h"
39 #include "aacdec.h"
40 #include "libavcodec/aactab.h"
41 #include "libavcodec/sinewin.h"
42 #include "libavcodec/kbdwin.h"
43 #include "libavcodec/cbrt_data.h"
44 #include "libavutil/mathematics.h"
45 #include "libavcodec/aacsbr.h"
46
47 DECLARE_ALIGNED(32, static float, sine_120)[120];
48 DECLARE_ALIGNED(32, static float, sine_960)[960];
49 DECLARE_ALIGNED(32, static float, aac_kbd_long_960)[960];
50 DECLARE_ALIGNED(32, static float, aac_kbd_short_120)[120];
51
52 161 static void init_tables_float_fn(void)
53 {
54 161 AAC_RENAME(ff_cbrt_tableinit)();
55
56 161 AAC_RENAME(ff_kbd_window_init)(AAC_RENAME2(aac_kbd_long_1024), 4.0, 1024);
57 161 AAC_RENAME(ff_kbd_window_init)(AAC_RENAME2(aac_kbd_short_128), 6.0, 128);
58
59 161 AAC_RENAME(ff_kbd_window_init)(AAC_RENAME(aac_kbd_long_960), 4.0, 960);
60 161 AAC_RENAME(ff_kbd_window_init)(AAC_RENAME(aac_kbd_short_120), 6.0, 120);
61
62 161 AAC_RENAME(ff_sine_window_init)(AAC_RENAME(sine_960), 960);
63 161 AAC_RENAME(ff_sine_window_init)(AAC_RENAME(sine_120), 120);
64 161 AAC_RENAME(ff_init_ff_sine_windows)(9);
65
66 161 AAC_RENAME(ff_aac_sbr_init)();
67 161 }
68
69 268 static int init(AACDecContext *ac)
70 {
71 static AVOnce init_float_once = AV_ONCE_INIT;
72 268 ff_thread_once(&init_float_once, init_tables_float_fn);
73
74 268 ac->fdsp = avpriv_float_dsp_alloc(ac->avctx->flags & AV_CODEC_FLAG_BITEXACT);
75
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 268 if (!ac->fdsp)
76 ✗ return AVERROR(ENOMEM);
77
78 268 ff_aac_float_common_init();
79
80 268 return 0;
81 }
82
83 static const float cce_scale[] = {
84 1.09050773266525765921, //2^(1/8)
85 1.18920711500272106672, //2^(1/4)
86 M_SQRT2,
87 2,
88 };
89
90 /** Dequantization-related **/
91 #include "aacdec_tab.h"
92 #include "libavutil/intfloat.h"
93
94 #ifndef VMUL2
95 1815116 static inline float *VMUL2(float *dst, const float *v, unsigned idx,
96 const float *scale)
97 {
98 1815116 float s = *scale;
99 1815116 *dst++ = v[idx & 15] * s;
100 1815116 *dst++ = v[idx>>4 & 15] * s;
101 1815116 return dst;
102 }
103 #endif
104
105 #ifndef VMUL4
106 2273024 static inline float *VMUL4(float *dst, const float *v, unsigned idx,
107 const float *scale)
108 {
109 2273024 float s = *scale;
110 2273024 *dst++ = v[idx & 3] * s;
111 2273024 *dst++ = v[idx>>2 & 3] * s;
112 2273024 *dst++ = v[idx>>4 & 3] * s;
113 2273024 *dst++ = v[idx>>6 & 3] * s;
114 2273024 return dst;
115 }
116 #endif
117
118 #ifndef VMUL2S
119 2274420 static inline float *VMUL2S(float *dst, const float *v, unsigned idx,
120 unsigned sign, const float *scale)
121 {
122 union av_intfloat32 s0, s1;
123
124 2274420 s0.f = s1.f = *scale;
125 2274420 s0.i ^= sign >> 1 << 31;
126 2274420 s1.i ^= sign << 31;
127
128 2274420 *dst++ = v[idx & 15] * s0.f;
129 2274420 *dst++ = v[idx>>4 & 15] * s1.f;
130
131 2274420 return dst;
132 }
133 #endif
134
135 #ifndef VMUL4S
136 1809834 static inline float *VMUL4S(float *dst, const float *v, unsigned idx,
137 unsigned sign, const float *scale)
138 {
139 1809834 unsigned nz = idx >> 12;
140 1809834 union av_intfloat32 s = { .f = *scale };
141 union av_intfloat32 t;
142
143 1809834 t.i = s.i ^ (sign & 1U<<31);
144 1809834 *dst++ = v[idx & 3] * t.f;
145
146 1809834 sign <<= nz & 1; nz >>= 1;
147 1809834 t.i = s.i ^ (sign & 1U<<31);
148 1809834 *dst++ = v[idx>>2 & 3] * t.f;
149
150 1809834 sign <<= nz & 1; nz >>= 1;
151 1809834 t.i = s.i ^ (sign & 1U<<31);
152 1809834 *dst++ = v[idx>>4 & 3] * t.f;
153
154 1809834 sign <<= nz & 1;
155 1809834 t.i = s.i ^ (sign & 1U<<31);
156 1809834 *dst++ = v[idx>>6 & 3] * t.f;
157
158 1809834 return dst;
159 }
160 #endif
161
162 #include "aacdec_float_coupling.h"
163 #include "aacdec_float_prediction.h"
164 #include "aacdec_dsp_template.c"
165 #include "aacdec_proc_template.c"
166