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author | Sean Bartell <wingedtachikoma@gmail.com> | 2011-06-25 21:32:25 -0400 |
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committer | Nils Wallménius <nils@rockbox.org> | 2012-04-25 22:13:20 +0200 |
commit | f40bfc9267b13b54e6379dfe7539447662879d24 (patch) | |
tree | 9b20069d5e62809ff434061ad730096836f916f2 /lib/rbcodec/codecs/libspeex/speex/speex_stereo.h | |
parent | a0009907de7a0107d49040d8a180f140e2eff299 (diff) | |
download | rockbox-f40bfc9267b13b54e6379dfe7539447662879d24.tar.gz rockbox-f40bfc9267b13b54e6379dfe7539447662879d24.zip |
Add codecs to librbcodec.
Change-Id: Id7f4717d51ed02d67cb9f9cb3c0ada4a81843f97
Reviewed-on: http://gerrit.rockbox.org/137
Reviewed-by: Nils Wallménius <nils@rockbox.org>
Tested-by: Nils Wallménius <nils@rockbox.org>
Diffstat (limited to 'lib/rbcodec/codecs/libspeex/speex/speex_stereo.h')
-rw-r--r-- | lib/rbcodec/codecs/libspeex/speex/speex_stereo.h | 91 |
1 files changed, 91 insertions, 0 deletions
diff --git a/lib/rbcodec/codecs/libspeex/speex/speex_stereo.h b/lib/rbcodec/codecs/libspeex/speex/speex_stereo.h new file mode 100644 index 0000000000..67e2a8d4e0 --- /dev/null +++ b/lib/rbcodec/codecs/libspeex/speex/speex_stereo.h | |||
@@ -0,0 +1,91 @@ | |||
1 | /* Copyright (C) 2002 Jean-Marc Valin*/ | ||
2 | /** | ||
3 | @file speex_stereo.h | ||
4 | @brief Describes the handling for intensity stereo | ||
5 | */ | ||
6 | /* | ||
7 | Redistribution and use in source and binary forms, with or without | ||
8 | modification, are permitted provided that the following conditions | ||
9 | are met: | ||
10 | |||
11 | - Redistributions of source code must retain the above copyright | ||
12 | notice, this list of conditions and the following disclaimer. | ||
13 | |||
14 | - Redistributions in binary form must reproduce the above copyright | ||
15 | notice, this list of conditions and the following disclaimer in the | ||
16 | documentation and/or other materials provided with the distribution. | ||
17 | |||
18 | - Neither the name of the Xiph.org Foundation nor the names of its | ||
19 | contributors may be used to endorse or promote products derived from | ||
20 | this software without specific prior written permission. | ||
21 | |||
22 | THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS | ||
23 | ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT | ||
24 | LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR | ||
25 | A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR | ||
26 | CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, | ||
27 | EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, | ||
28 | PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR | ||
29 | PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF | ||
30 | LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING | ||
31 | NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS | ||
32 | SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. | ||
33 | */ | ||
34 | |||
35 | #ifndef STEREO_H | ||
36 | #define STEREO_H | ||
37 | /** @defgroup SpeexStereoState SpeexStereoState: Handling Speex stereo files | ||
38 | * This describes the Speex intensity stereo encoding/decoding | ||
39 | * @{ | ||
40 | */ | ||
41 | |||
42 | #include "speex_types.h" | ||
43 | #include "speex_bits.h" | ||
44 | |||
45 | #ifdef __cplusplus | ||
46 | extern "C" { | ||
47 | #endif | ||
48 | |||
49 | /** If you access any of these fields directly, I'll personally come and bite you */ | ||
50 | typedef struct SpeexStereoState { | ||
51 | float balance; /**< Left/right balance info */ | ||
52 | float e_ratio; /**< Ratio of energies: E(left+right)/[E(left)+E(right)] */ | ||
53 | float smooth_left; /**< Smoothed left channel gain */ | ||
54 | float smooth_right; /**< Smoothed right channel gain */ | ||
55 | float reserved1; /**< Reserved for future use */ | ||
56 | float reserved2; /**< Reserved for future use */ | ||
57 | } SpeexStereoState; | ||
58 | |||
59 | /** Deprecated. Use speex_stereo_state_init() instead. */ | ||
60 | #define SPEEX_STEREO_STATE_INIT {1,.5,1,1,0,0} | ||
61 | |||
62 | /** Initialise/create a stereo stereo state */ | ||
63 | SpeexStereoState *speex_stereo_state_init(void); | ||
64 | |||
65 | /** Reset/re-initialise an already allocated stereo state */ | ||
66 | void speex_stereo_state_reset(SpeexStereoState *stereo); | ||
67 | |||
68 | /** Destroy a stereo stereo state */ | ||
69 | void speex_stereo_state_destroy(SpeexStereoState *stereo); | ||
70 | |||
71 | /** Transforms a stereo frame into a mono frame and stores intensity stereo info in 'bits' */ | ||
72 | void speex_encode_stereo(float *data, int frame_size, SpeexBits *bits); | ||
73 | |||
74 | /** Transforms a stereo frame into a mono frame and stores intensity stereo info in 'bits' */ | ||
75 | void speex_encode_stereo_int(spx_int16_t *data, int frame_size, SpeexBits *bits); | ||
76 | |||
77 | /** Transforms a mono frame into a stereo frame using intensity stereo info */ | ||
78 | void speex_decode_stereo(float *data, int frame_size, SpeexStereoState *stereo); | ||
79 | |||
80 | /** Transforms a mono frame into a stereo frame using intensity stereo info */ | ||
81 | void speex_decode_stereo_int(spx_int16_t *data, int frame_size, SpeexStereoState *stereo); | ||
82 | |||
83 | /** Callback handler for intensity stereo info */ | ||
84 | int speex_std_stereo_request_handler(SpeexBits *bits, void *state, void *data); | ||
85 | |||
86 | #ifdef __cplusplus | ||
87 | } | ||
88 | #endif | ||
89 | |||
90 | /** @} */ | ||
91 | #endif | ||