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 INTFLOAT, AAC_RENAME2(aac_kbd_long_1024))[1024]; | ||
47 | DECLARE_ALIGNED(32, static INTFLOAT, AAC_RENAME2(aac_kbd_short_128))[128]; | ||
48 | DECLARE_ALIGNED(32, static INTFLOAT, AAC_RENAME(aac_kbd_long_960))[960]; | ||
49 | DECLARE_ALIGNED(32, static INTFLOAT, AAC_RENAME(aac_kbd_short_120))[120]; | ||
50 | |||
51 | 18 | static void init_tables_fixed_fn(void) | |
52 | { | ||
53 | 18 | AAC_RENAME(ff_cbrt_tableinit)(); | |
54 | |||
55 | 18 | AAC_RENAME(ff_kbd_window_init)(AAC_RENAME2(aac_kbd_long_1024), 4.0, 1024); | |
56 | 18 | AAC_RENAME(ff_kbd_window_init)(AAC_RENAME2(aac_kbd_short_128), 6.0, 128); | |
57 | |||
58 | 18 | AAC_RENAME(ff_kbd_window_init)(AAC_RENAME(aac_kbd_long_960), 4.0, 960); | |
59 | 18 | AAC_RENAME(ff_kbd_window_init)(AAC_RENAME(aac_kbd_short_120), 6.0, 120); | |
60 | |||
61 | 18 | AAC_RENAME(ff_aac_sbr_init)(); | |
62 | |||
63 | 18 | init_sine_windows_fixed(); | |
64 | 18 | } | |
65 | |||
66 | 23 | static int init_fixed(AACDecContext *ac) | |
67 | { | ||
68 | static AVOnce init_fixed_once = AV_ONCE_INIT; | ||
69 | 23 | ff_thread_once(&init_fixed_once, init_tables_fixed_fn); | |
70 | |||
71 | 23 | ac->fdsp = avpriv_alloc_fixed_dsp(ac->avctx->flags & AV_CODEC_FLAG_BITEXACT); | |
72 |
1/2✗ Branch 0 not taken.
✓ Branch 1 taken 23 times.
|
23 | if (!ac->fdsp) |
73 | ✗ | return AVERROR(ENOMEM); | |
74 | |||
75 | 23 | return 0; | |
76 | } | ||
77 | |||
78 | static const int cce_scale_fixed[8] = { | ||
79 | Q30(1.0), //2^(0/8) | ||
80 | Q30(1.0905077327), //2^(1/8) | ||
81 | Q30(1.1892071150), //2^(2/8) | ||
82 | Q30(1.2968395547), //2^(3/8) | ||
83 | Q30(1.4142135624), //2^(4/8) | ||
84 | Q30(1.5422108254), //2^(5/8) | ||
85 | Q30(1.6817928305), //2^(6/8) | ||
86 | Q30(1.8340080864), //2^(7/8) | ||
87 | }; | ||
88 | |||
89 | /** Dequantization-related */ | ||
90 | #include "aacdec_fixed_dequant.h" | ||
91 | |||
92 | #include "aacdec_fixed_coupling.h" | ||
93 | #include "aacdec_fixed_prediction.h" | ||
94 | #include "aacdec_dsp_template.c" | ||
95 | #include "aacdec_proc_template.c" | ||
96 |