diff options
Diffstat (limited to 'lib/rbcodec/codecs/libspc/spc_dsp_generic.h')
-rw-r--r-- | lib/rbcodec/codecs/libspc/spc_dsp_generic.h | 45 |
1 files changed, 45 insertions, 0 deletions
diff --git a/lib/rbcodec/codecs/libspc/spc_dsp_generic.h b/lib/rbcodec/codecs/libspc/spc_dsp_generic.h new file mode 100644 index 0000000000..beeb87deb2 --- /dev/null +++ b/lib/rbcodec/codecs/libspc/spc_dsp_generic.h | |||
@@ -0,0 +1,45 @@ | |||
1 | /*************************************************************************** | ||
2 | * __________ __ ___. | ||
3 | * Open \______ \ ____ ____ | | _\_ |__ _______ ___ | ||
4 | * Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ / | ||
5 | * Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < < | ||
6 | * Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \ | ||
7 | * \/ \/ \/ \/ \/ | ||
8 | * $Id$ | ||
9 | * | ||
10 | * Copyright (C) 2006-2007 Adam Gashlin (hcs) | ||
11 | * Copyright (C) 2004-2007 Shay Green (blargg) | ||
12 | * Copyright (C) 2002 Brad Martin | ||
13 | * | ||
14 | * This program is free software; you can redistribute it and/or | ||
15 | * modify it under the terms of the GNU General Public License | ||
16 | * as published by the Free Software Foundation; either version 2 | ||
17 | * of the License, or (at your option) any later version. | ||
18 | * | ||
19 | * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY | ||
20 | * KIND, either express or implied. | ||
21 | * | ||
22 | ****************************************************************************/ | ||
23 | #if !SPC_NOECHO | ||
24 | |||
25 | #ifndef SPC_DSP_ECHO_APPLY | ||
26 | enum | ||
27 | { | ||
28 | FIR_BUF_CNT = FIR_BUF_HALF * 2 * 2, | ||
29 | FIR_BUF_SIZE = FIR_BUF_CNT * sizeof ( int32_t ), | ||
30 | FIR_BUF_ALIGN = FIR_BUF_SIZE, | ||
31 | FIR_BUF_MASK = ~((FIR_BUF_ALIGN / 2) | (sizeof ( int32_t ) * 2 - 1)) | ||
32 | }; | ||
33 | |||
34 | /* Echo filter structure embedded in struct Spc_Dsp */ | ||
35 | struct echo_filter | ||
36 | { | ||
37 | /* fir_buf [i + 8] == fir_buf [i], to avoid wrap checking in FIR code */ | ||
38 | int pos; /* (0 to 7) */ | ||
39 | int buf [FIR_BUF_HALF * 2] [2]; | ||
40 | /* copy of echo FIR constants as int, for faster access */ | ||
41 | int coeff [VOICE_COUNT]; | ||
42 | }; | ||
43 | #endif /* SPC_DSP_ECHO_APPLY */ | ||
44 | |||
45 | #endif /* !SPC_NOECHO */ | ||