diff options
Diffstat (limited to 'lib/rbcodec/codecs/libspeex/sb_celp.h')
-rw-r--r-- | lib/rbcodec/codecs/libspeex/sb_celp.h | 160 |
1 files changed, 160 insertions, 0 deletions
diff --git a/lib/rbcodec/codecs/libspeex/sb_celp.h b/lib/rbcodec/codecs/libspeex/sb_celp.h new file mode 100644 index 0000000000..5a65d1ff8d --- /dev/null +++ b/lib/rbcodec/codecs/libspeex/sb_celp.h | |||
@@ -0,0 +1,160 @@ | |||
1 | /* Copyright (C) 2002-2006 Jean-Marc Valin */ | ||
2 | /** | ||
3 | @file sb_celp.h | ||
4 | @brief Sub-band CELP mode used for wideband encoding | ||
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 | |||
36 | #ifndef SB_CELP_H | ||
37 | #define SB_CELP_H | ||
38 | |||
39 | #include "modes.h" | ||
40 | #include "speex/speex_bits.h" | ||
41 | #include "nb_celp.h" | ||
42 | |||
43 | /**Structure representing the full state of the sub-band encoder*/ | ||
44 | typedef struct SBEncState { | ||
45 | const SpeexMode *mode; /**< Pointer to the mode (containing for vtable info) */ | ||
46 | void *st_low; /**< State of the low-band (narrowband) encoder */ | ||
47 | int full_frame_size; /**< Length of full-band frames*/ | ||
48 | int frame_size; /**< Length of high-band frames*/ | ||
49 | int subframeSize; /**< Length of high-band sub-frames*/ | ||
50 | int nbSubframes; /**< Number of high-band sub-frames*/ | ||
51 | int windowSize; /**< Length of high-band LPC window*/ | ||
52 | int lpcSize; /**< Order of high-band LPC analysis */ | ||
53 | int first; /**< First frame? */ | ||
54 | spx_word16_t lpc_floor; /**< Controls LPC analysis noise floor */ | ||
55 | spx_word16_t gamma1; /**< Perceptual weighting coef 1 */ | ||
56 | spx_word16_t gamma2; /**< Perceptual weighting coef 2 */ | ||
57 | |||
58 | char *stack; /**< Temporary allocation stack */ | ||
59 | spx_word16_t *high; /**< High-band signal (buffer) */ | ||
60 | spx_word16_t *h0_mem, *h1_mem; | ||
61 | |||
62 | const spx_word16_t *window; /**< LPC analysis window */ | ||
63 | const spx_word16_t *lagWindow; /**< Auto-correlation window */ | ||
64 | spx_lsp_t *old_lsp; /**< LSPs of previous frame */ | ||
65 | spx_lsp_t *old_qlsp; /**< Quantized LSPs of previous frame */ | ||
66 | spx_coef_t *interp_qlpc; /**< Interpolated quantized LPCs for current sub-frame */ | ||
67 | |||
68 | spx_mem_t *mem_sp; /**< Synthesis signal memory */ | ||
69 | spx_mem_t *mem_sp2; | ||
70 | spx_mem_t *mem_sw; /**< Perceptual signal memory */ | ||
71 | spx_word32_t *pi_gain; | ||
72 | spx_word16_t *exc_rms; | ||
73 | spx_word16_t *innov_rms_save; /**< If non-NULL, innovation is copied here */ | ||
74 | |||
75 | #ifndef DISABLE_VBR | ||
76 | float vbr_quality; /**< Quality setting for VBR encoding */ | ||
77 | int vbr_enabled; /**< 1 for enabling VBR, 0 otherwise */ | ||
78 | spx_int32_t vbr_max; /**< Max bit-rate allowed in VBR mode (total) */ | ||
79 | spx_int32_t vbr_max_high; /**< Max bit-rate allowed in VBR mode for the high-band */ | ||
80 | spx_int32_t abr_enabled; /**< ABR setting (in bps), 0 if off */ | ||
81 | float abr_drift; | ||
82 | float abr_drift2; | ||
83 | float abr_count; | ||
84 | int vad_enabled; /**< 1 for enabling VAD, 0 otherwise */ | ||
85 | float relative_quality; | ||
86 | #endif /* #ifndef DISABLE_VBR */ | ||
87 | |||
88 | int encode_submode; | ||
89 | const SpeexSubmode * const *submodes; | ||
90 | int submodeID; | ||
91 | int submodeSelect; | ||
92 | int complexity; | ||
93 | spx_int32_t sampling_rate; | ||
94 | |||
95 | } SBEncState; | ||
96 | |||
97 | |||
98 | /**Structure representing the full state of the sub-band decoder*/ | ||
99 | typedef struct SBDecState { | ||
100 | const SpeexMode *mode; /**< Pointer to the mode (containing for vtable info) */ | ||
101 | void *st_low; /**< State of the low-band (narrowband) encoder */ | ||
102 | int full_frame_size; | ||
103 | int frame_size; | ||
104 | int subframeSize; | ||
105 | int nbSubframes; | ||
106 | int lpcSize; | ||
107 | int first; | ||
108 | spx_int32_t sampling_rate; | ||
109 | int lpc_enh_enabled; | ||
110 | |||
111 | char *stack; | ||
112 | spx_word16_t g0_mem[64], g1_mem[64]; | ||
113 | |||
114 | /* Voice codec files will be WB mode, which has sub frame size of 40 */ | ||
115 | #ifndef ROCKBOX_VOICE_CODEC | ||
116 | spx_word16_t excBuf[80]; | ||
117 | #else | ||
118 | spx_word16_t excBuf[40]; | ||
119 | #endif | ||
120 | spx_lsp_t old_qlsp[8]; | ||
121 | spx_coef_t interp_qlpc[8]; | ||
122 | |||
123 | spx_mem_t mem_sp[16]; | ||
124 | spx_word32_t pi_gain[4]; | ||
125 | spx_word16_t exc_rms[4]; | ||
126 | spx_word16_t *innov_save; /** If non-NULL, innovation is copied here */ | ||
127 | |||
128 | spx_word16_t last_ener; | ||
129 | spx_int32_t seed; | ||
130 | |||
131 | int encode_submode; | ||
132 | const SpeexSubmode * const *submodes; | ||
133 | int submodeID; | ||
134 | } SBDecState; | ||
135 | |||
136 | |||
137 | /**Initializes encoder state*/ | ||
138 | void *sb_encoder_init(const SpeexMode *m); | ||
139 | |||
140 | /**De-allocates encoder state resources*/ | ||
141 | void sb_encoder_destroy(void *state); | ||
142 | |||
143 | /**Encodes one frame*/ | ||
144 | int sb_encode(void *state, void *in, SpeexBits *bits); | ||
145 | |||
146 | |||
147 | /**Initializes decoder state*/ | ||
148 | void *sb_decoder_init(const SpeexMode *m); | ||
149 | |||
150 | /**De-allocates decoder state resources*/ | ||
151 | void sb_decoder_destroy(void *state); | ||
152 | |||
153 | /**Decodes one frame*/ | ||
154 | int sb_decode(void *state, SpeexBits *bits, void *out); | ||
155 | |||
156 | int sb_encoder_ctl(void *state, int request, void *ptr); | ||
157 | |||
158 | int sb_decoder_ctl(void *state, int request, void *ptr); | ||
159 | |||
160 | #endif | ||