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| 1 /* Copyright (C) 2002-2006 Jean-Marc Valin */ |
| 2 /** |
| 3 @file modes.h |
| 4 @brief Describes the different modes of the codec |
| 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 MODES_H |
| 37 #define MODES_H |
| 38 |
| 39 #include <speex/speex.h> |
| 40 #include <speex/speex_bits.h> |
| 41 #include "arch.h" |
| 42 |
| 43 #define NB_SUBMODES 16 |
| 44 #define NB_SUBMODE_BITS 4 |
| 45 |
| 46 #define SB_SUBMODES 8 |
| 47 #define SB_SUBMODE_BITS 3 |
| 48 |
| 49 /* Used internally, NOT TO BE USED in applications */ |
| 50 /** Used internally*/ |
| 51 #define SPEEX_GET_PI_GAIN 100 |
| 52 /** Used internally*/ |
| 53 #define SPEEX_GET_EXC 101 |
| 54 /** Used internally*/ |
| 55 #define SPEEX_GET_INNOV 102 |
| 56 /** Used internally*/ |
| 57 #define SPEEX_GET_DTX_STATUS 103 |
| 58 /** Used internally*/ |
| 59 #define SPEEX_SET_INNOVATION_SAVE 104 |
| 60 /** Used internally*/ |
| 61 #define SPEEX_SET_WIDEBAND 105 |
| 62 |
| 63 /** Used internally*/ |
| 64 #define SPEEX_GET_STACK 106 |
| 65 |
| 66 |
| 67 /** Quantizes LSPs */ |
| 68 typedef void (*lsp_quant_func)(spx_lsp_t *, spx_lsp_t *, int, SpeexBits *); |
| 69 |
| 70 /** Decodes quantized LSPs */ |
| 71 typedef void (*lsp_unquant_func)(spx_lsp_t *, int, SpeexBits *); |
| 72 |
| 73 |
| 74 /** Long-term predictor quantization */ |
| 75 typedef int (*ltp_quant_func)(spx_word16_t *, spx_word16_t *, spx_coef_t *, spx_
coef_t *, |
| 76 spx_coef_t *, spx_sig_t *, const void *, int, int,
spx_word16_t, |
| 77 int, int, SpeexBits*, char *, spx_word16_t *, spx_
word16_t *, int, int, int, spx_word32_t *); |
| 78 |
| 79 /** Long-term un-quantize */ |
| 80 typedef void (*ltp_unquant_func)(spx_word16_t *, spx_word32_t *, int, int, spx_w
ord16_t, const void *, int, int *, |
| 81 spx_word16_t *, SpeexBits*, char*, int, int, sp
x_word16_t, int); |
| 82 |
| 83 |
| 84 /** Innovation quantization function */ |
| 85 typedef void (*innovation_quant_func)(spx_word16_t *, spx_coef_t *, spx_coef_t *
, spx_coef_t *, const void *, int, int, |
| 86 spx_sig_t *, spx_word16_t *, SpeexBits *,
char *, int, int); |
| 87 |
| 88 /** Innovation unquantization function */ |
| 89 typedef void (*innovation_unquant_func)(spx_sig_t *, const void *, int, SpeexBit
s*, char *, spx_int32_t *); |
| 90 |
| 91 /** Description of a Speex sub-mode (wither narrowband or wideband */ |
| 92 typedef struct SpeexSubmode { |
| 93 int lbr_pitch; /**< Set to -1 for "normal" modes, otherwise enco
de pitch using a global pitch and allowing a +- lbr_pitch variation (for low not
-rates)*/ |
| 94 int forced_pitch_gain; /**< Use the same (forced) pitch gain for all sub
-frames */ |
| 95 int have_subframe_gain; /**< Number of bits to use as sub-frame innovatio
n gain */ |
| 96 int double_codebook; /**< Apply innovation quantization twice for high
er quality (and higher bit-rate)*/ |
| 97 /*LSP functions*/ |
| 98 lsp_quant_func lsp_quant; /**< LSP quantization function */ |
| 99 lsp_unquant_func lsp_unquant; /**< LSP unquantization function */ |
| 100 |
| 101 /*Long-term predictor functions*/ |
| 102 ltp_quant_func ltp_quant; /**< Long-term predictor (pitch) quantizer */ |
| 103 ltp_unquant_func ltp_unquant; /**< Long-term predictor (pitch) un-quantizer
*/ |
| 104 const void *ltp_params; /**< Pitch parameters (options) */ |
| 105 |
| 106 /*Quantization of innovation*/ |
| 107 innovation_quant_func innovation_quant; /**< Innovation quantization */ |
| 108 innovation_unquant_func innovation_unquant; /**< Innovation un-quantization *
/ |
| 109 const void *innovation_params; /**< Innovation quantization param
eters*/ |
| 110 |
| 111 spx_word16_t comb_gain; /**< Gain of enhancer comb filter */ |
| 112 |
| 113 int bits_per_frame; /**< Number of bits per frame after encodin
g*/ |
| 114 } SpeexSubmode; |
| 115 |
| 116 /** Struct defining the encoding/decoding mode*/ |
| 117 typedef struct SpeexNBMode { |
| 118 int frameSize; /**< Size of frames used for encoding */ |
| 119 int subframeSize; /**< Size of sub-frames used for encoding */ |
| 120 int lpcSize; /**< Order of LPC filter */ |
| 121 int pitchStart; /**< Smallest pitch value allowed */ |
| 122 int pitchEnd; /**< Largest pitch value allowed */ |
| 123 |
| 124 spx_word16_t gamma1; /**< Perceptual filter parameter #1 */ |
| 125 spx_word16_t gamma2; /**< Perceptual filter parameter #2 */ |
| 126 spx_word16_t lpc_floor; /**< Noise floor for LPC analysis */ |
| 127 |
| 128 const SpeexSubmode *submodes[NB_SUBMODES]; /**< Sub-mode data for the mode */ |
| 129 int defaultSubmode; /**< Default sub-mode to use when encoding */ |
| 130 int quality_map[11]; /**< Mode corresponding to each quality setting */ |
| 131 } SpeexNBMode; |
| 132 |
| 133 |
| 134 /** Struct defining the encoding/decoding mode for SB-CELP (wideband) */ |
| 135 typedef struct SpeexSBMode { |
| 136 const SpeexMode *nb_mode; /**< Embedded narrowband mode */ |
| 137 int frameSize; /**< Size of frames used for encoding */ |
| 138 int subframeSize; /**< Size of sub-frames used for encoding */ |
| 139 int lpcSize; /**< Order of LPC filter */ |
| 140 spx_word16_t gamma1; /**< Perceptual filter parameter #1 */ |
| 141 spx_word16_t gamma2; /**< Perceptual filter parameter #1 */ |
| 142 spx_word16_t lpc_floor; /**< Noise floor for LPC analysis */ |
| 143 spx_word16_t folding_gain; |
| 144 |
| 145 const SpeexSubmode *submodes[SB_SUBMODES]; /**< Sub-mode data for the mode */ |
| 146 int defaultSubmode; /**< Default sub-mode to use when encoding */ |
| 147 int low_quality_map[11]; /**< Mode corresponding to each quality setting
*/ |
| 148 int quality_map[11]; /**< Mode corresponding to each quality setting */ |
| 149 #ifndef DISABLE_VBR |
| 150 const float (*vbr_thresh)[11]; |
| 151 #endif |
| 152 int nb_modes; |
| 153 } SpeexSBMode; |
| 154 |
| 155 int speex_encode_native(void *state, spx_word16_t *in, SpeexBits *bits); |
| 156 int speex_decode_native(void *state, SpeexBits *bits, spx_word16_t *out); |
| 157 |
| 158 int nb_mode_query(const void *mode, int request, void *ptr); |
| 159 int wb_mode_query(const void *mode, int request, void *ptr); |
| 160 |
| 161 #endif |
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