FFmpeg coverage


Directory: ../../../ffmpeg/
File: src/libavcodec/aac/aacdec_fixed.c
Date: 2024-07-16 12:46:59
Exec Total Coverage
Lines: 19 20 95.0%
Functions: 2 2 100.0%
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 1
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_fixed_tablegen.h"
42 #include "libavcodec/kbdwin.h"
43 #include "libavcodec/cbrt_data.h"
44 #include "libavcodec/aacsbr.h"
45
46 DECLARE_ALIGNED(32, static int, aac_kbd_long_1024_fixed)[1024];
47 DECLARE_ALIGNED(32, static int, aac_kbd_short_128_fixed)[128];
48 DECLARE_ALIGNED(32, static int, aac_kbd_long_960_fixed)[960];
49 DECLARE_ALIGNED(32, static int, aac_kbd_short_120_fixed)[120];
50 DECLARE_ALIGNED(32, static int, aac_kbd_long_768_fixed)[768];
51 DECLARE_ALIGNED(32, static int, aac_kbd_short_96_fixed)[96];
52
53 18 static void init_tables_fixed_fn(void)
54 {
55 18 ff_cbrt_tableinit_fixed();
56
57 18 ff_kbd_window_init_fixed(aac_kbd_long_1024_fixed, 4.0, 1024);
58 18 ff_kbd_window_init_fixed(aac_kbd_short_128_fixed, 6.0, 128);
59
60 18 ff_kbd_window_init_fixed(aac_kbd_long_960_fixed, 4.0, 960);
61 18 ff_kbd_window_init_fixed(aac_kbd_short_120_fixed, 6.0, 120);
62
63 18 ff_aac_sbr_init_fixed();
64
65 18 init_sine_windows_fixed();
66 18 }
67
68 static const int cce_scale_fixed[8] = {
69 Q30(1.0), //2^(0/8)
70 Q30(1.0905077327), //2^(1/8)
71 Q30(1.1892071150), //2^(2/8)
72 Q30(1.2968395547), //2^(3/8)
73 Q30(1.4142135624), //2^(4/8)
74 Q30(1.5422108254), //2^(5/8)
75 Q30(1.6817928305), //2^(6/8)
76 Q30(1.8340080864), //2^(7/8)
77 };
78
79 /** Dequantization-related */
80 #include "aacdec_fixed_dequant.h"
81
82 #include "aacdec_fixed_coupling.h"
83 #include "aacdec_fixed_prediction.h"
84 #include "aacdec_dsp_template.c"
85 #include "aacdec_proc_template.c"
86
87 23 av_cold int ff_aac_decode_init_fixed(AVCodecContext *avctx)
88 {
89 static AVOnce init_fixed_once = AV_ONCE_INIT;
90 23 AACDecContext *ac = avctx->priv_data;
91
92 23 ac->is_fixed = 1;
93 23 avctx->sample_fmt = AV_SAMPLE_FMT_S32P;
94
95 23 aac_dsp_init_fixed(&ac->dsp);
96 23 aac_proc_init_fixed(&ac->proc);
97
98 23 ac->fdsp = avpriv_alloc_fixed_dsp(avctx->flags & AV_CODEC_FLAG_BITEXACT);
99
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23 if (!ac->fdsp)
100 return AVERROR(ENOMEM);
101
102 23 ff_thread_once(&init_fixed_once, init_tables_fixed_fn);
103
104 23 return ff_aac_decode_init(avctx);
105 }
106