libspeex/modes.c - chromium/deps/speex - Git at Google

 /* Copyright (C) 2002-2006 Jean-Marc Valin
    File: modes.c

    Describes the different modes of the codec

    Redistribution and use in source and binary forms, with or without
    modification, are permitted provided that the following conditions
    are met:

    - Redistributions of source code must retain the above copyright
    notice, this list of conditions and the following disclaimer.

    - Redistributions in binary form must reproduce the above copyright
    notice, this list of conditions and the following disclaimer in the
    documentation and/or other materials provided with the distribution.

    - Neither the name of the Xiph.org Foundation nor the names of its
    contributors may be used to endorse or promote products derived from
    this software without specific prior written permission.

    THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
    ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
    LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
    A PARTICULAR PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR
    CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
    EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
    PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
    PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
    LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
    NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
    SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

 */

 #ifdef HAVE_CONFIG_H
 #include "config.h"
 #endif

 #include "modes.h"
 #include "ltp.h"
 #include "quant_lsp.h"
 #include "cb_search.h"
 #include "sb_celp.h"
 #include "nb_celp.h"
 #include "vbr.h"
 #include "arch.h"
 #include <math.h>

 #ifndef NULL
 #define NULL 0
 #endif


 /* Extern declarations for all codebooks we use here */
 extern const signed char gain_cdbk_nb[];
 extern const signed char gain_cdbk_lbr[];
 extern const signed char exc_5_256_table[];
 extern const signed char exc_5_64_table[];
 extern const signed char exc_8_128_table[];
 extern const signed char exc_10_32_table[];
 extern const signed char exc_10_16_table[];
 extern const signed char exc_20_32_table[];


 /* Parameters for Long-Term Prediction (LTP)*/
 static const ltp_params ltp_params_nb = {
    gain_cdbk_nb,
    7,
    7
 };

 /* Parameters for Long-Term Prediction (LTP)*/
 static const ltp_params ltp_params_vlbr = {
    gain_cdbk_lbr,
    5,
    0
 };

 /* Parameters for Long-Term Prediction (LTP)*/
 static const ltp_params ltp_params_lbr = {
    gain_cdbk_lbr,
    5,
    7
 };

 /* Parameters for Long-Term Prediction (LTP)*/
 static const ltp_params ltp_params_med = {
    gain_cdbk_lbr,
    5,
    7
 };

 /* Split-VQ innovation parameters for very low bit-rate narrowband */
 static const split_cb_params split_cb_nb_vlbr = {
    10,               /*subvect_size*/
    4,               /*nb_subvect*/
    exc_10_16_table, /*shape_cb*/
    4,               /*shape_bits*/
    0,
 };

 /* Split-VQ innovation parameters for very low bit-rate narrowband */
 static const split_cb_params split_cb_nb_ulbr = {
    20,               /*subvect_size*/
    2,               /*nb_subvect*/
    exc_20_32_table, /*shape_cb*/
    5,               /*shape_bits*/
    0,
 };

 /* Split-VQ innovation parameters for low bit-rate narrowband */
 static const split_cb_params split_cb_nb_lbr = {
    10,              /*subvect_size*/
    4,               /*nb_subvect*/
    exc_10_32_table, /*shape_cb*/
    5,               /*shape_bits*/
    0,
 };


 /* Split-VQ innovation parameters narrowband */
 static const split_cb_params split_cb_nb = {
    5,               /*subvect_size*/
    8,               /*nb_subvect*/
    exc_5_64_table, /*shape_cb*/
    6,               /*shape_bits*/
    0,
 };

 /* Split-VQ innovation parameters narrowband */
 static const split_cb_params split_cb_nb_med = {
    8,               /*subvect_size*/
    5,               /*nb_subvect*/
    exc_8_128_table, /*shape_cb*/
    7,               /*shape_bits*/
    0,
 };

 /* Split-VQ innovation for low-band wideband */
 static const split_cb_params split_cb_sb = {
    5,               /*subvect_size*/
    8,              /*nb_subvect*/
    exc_5_256_table,    /*shape_cb*/
    8,               /*shape_bits*/
    0,
 };


 /* 2150 bps "vocoder-like" mode for comfort noise */
 static const SpeexSubmode nb_submode1 = {
    0,
    1,
    0,
    0,
    /* LSP quantization */
    lsp_quant_lbr,
    lsp_unquant_lbr,
    /* No pitch quantization */
    forced_pitch_quant,
    forced_pitch_unquant,
    NULL,
    /* No innovation quantization (noise only) */
    noise_codebook_quant,
    noise_codebook_unquant,
    NULL,
    -1,
    43
 };

 /* 3.95 kbps very low bit-rate mode */
 static const SpeexSubmode nb_submode8 = {
    0,
    1,
    0,
    0,
    /*LSP quantization*/
    lsp_quant_lbr,
    lsp_unquant_lbr,
    /*No pitch quantization*/
    forced_pitch_quant,
    forced_pitch_unquant,
    NULL,
    /*Innovation quantization*/
    split_cb_search_shape_sign,
    split_cb_shape_sign_unquant,
    &split_cb_nb_ulbr,
    QCONST16(.5,15),
    79
 };

 /* 5.95 kbps very low bit-rate mode */
 static const SpeexSubmode nb_submode2 = {
    0,
    0,
    0,
    0,
    /*LSP quantization*/
    lsp_quant_lbr,
    lsp_unquant_lbr,
    /*No pitch quantization*/
    pitch_search_3tap,
    pitch_unquant_3tap,
    &ltp_params_vlbr,
    /*Innovation quantization*/
    split_cb_search_shape_sign,
    split_cb_shape_sign_unquant,
    &split_cb_nb_vlbr,
    QCONST16(.6,15),
    119
 };

 /* 8 kbps low bit-rate mode */
 static const SpeexSubmode nb_submode3 = {
    -1,
    0,
    1,
    0,
    /*LSP quantization*/
    lsp_quant_lbr,
    lsp_unquant_lbr,
    /*Pitch quantization*/
    pitch_search_3tap,
    pitch_unquant_3tap,
    &ltp_params_lbr,
    /*Innovation quantization*/
    split_cb_search_shape_sign,
    split_cb_shape_sign_unquant,
    &split_cb_nb_lbr,
    QCONST16(.55,15),
    160
 };

 /* 11 kbps medium bit-rate mode */
 static const SpeexSubmode nb_submode4 = {
    -1,
    0,
    1,
    0,
    /*LSP quantization*/
    lsp_quant_lbr,
    lsp_unquant_lbr,
    /*Pitch quantization*/
    pitch_search_3tap,
    pitch_unquant_3tap,
    &ltp_params_med,
    /*Innovation quantization*/
    split_cb_search_shape_sign,
    split_cb_shape_sign_unquant,
    &split_cb_nb_med,
    QCONST16(.45,15),
    220
 };

 /* 15 kbps high bit-rate mode */
 static const SpeexSubmode nb_submode5 = {
    -1,
    0,
    3,
    0,
    /*LSP quantization*/
    lsp_quant_nb,
    lsp_unquant_nb,
    /*Pitch quantization*/
    pitch_search_3tap,
    pitch_unquant_3tap,
    &ltp_params_nb,
    /*Innovation quantization*/
    split_cb_search_shape_sign,
    split_cb_shape_sign_unquant,
    &split_cb_nb,
    QCONST16(.3,15),
    300
 };

 /* 18.2 high bit-rate mode */
 static const SpeexSubmode nb_submode6 = {
    -1,
    0,
    3,
    0,
    /*LSP quantization*/
    lsp_quant_nb,
    lsp_unquant_nb,
    /*Pitch quantization*/
    pitch_search_3tap,
    pitch_unquant_3tap,
    &ltp_params_nb,
    /*Innovation quantization*/
    split_cb_search_shape_sign,
    split_cb_shape_sign_unquant,
    &split_cb_sb,
    QCONST16(.2,15),
    364
 };

 /* 24.6 kbps high bit-rate mode */
 static const SpeexSubmode nb_submode7 = {
    -1,
    0,
    3,
    1,
    /*LSP quantization*/
    lsp_quant_nb,
    lsp_unquant_nb,
    /*Pitch quantization*/
    pitch_search_3tap,
    pitch_unquant_3tap,
    &ltp_params_nb,
    /*Innovation quantization*/
    split_cb_search_shape_sign,
    split_cb_shape_sign_unquant,
    &split_cb_nb,
    QCONST16(.1,15),
    492
 };


 /* Default mode for narrowband */
 static const SpeexNBMode nb_mode = {
    160,    /*frameSize*/
    40,     /*subframeSize*/
    10,     /*lpcSize*/
    17,     /*pitchStart*/
    144,    /*pitchEnd*/
 #ifdef FIXED_POINT
    29491, 19661, /* gamma1, gamma2 */
 #else
    0.9, 0.6, /* gamma1, gamma2 */
 #endif
    QCONST16(.0002,15), /*lpc_floor*/
    {NULL, &nb_submode1, &nb_submode2, &nb_submode3, &nb_submode4, &nb_submode5, &nb_submode6, &nb_submode7,
    &nb_submode8, NULL, NULL, NULL, NULL, NULL, NULL, NULL},
    5,
    {1, 8, 2, 3, 3, 4, 4, 5, 5, 6, 7}
 };


 /* Default mode for narrowband */
 EXPORT const SpeexMode speex_nb_mode = {
    &nb_mode,
    nb_mode_query,
    "narrowband",
    0,
    4,
    &nb_encoder_init,
    &nb_encoder_destroy,
    &nb_encode,
    &nb_decoder_init,
    &nb_decoder_destroy,
    &nb_decode,
    &nb_encoder_ctl,
    &nb_decoder_ctl,
 };


 EXPORT int speex_mode_query(const SpeexMode *mode, int request, void *ptr)
 {
    return mode->query(mode->mode, request, ptr);
 }

 #ifdef FIXED_DEBUG
 long long spx_mips=0;
 #endif
	/* Copyright (C) 2002-2006 Jean-Marc Valin
	File: modes.c

	Describes the different modes of the codec

	Redistribution and use in source and binary forms, with or without
	modification, are permitted provided that the following conditions
	are met:

	- Redistributions of source code must retain the above copyright
	notice, this list of conditions and the following disclaimer.

	- Redistributions in binary form must reproduce the above copyright
	notice, this list of conditions and the following disclaimer in the
	documentation and/or other materials provided with the distribution.

	- Neither the name of the Xiph.org Foundation nor the names of its
	contributors may be used to endorse or promote products derived from
	this software without specific prior written permission.

	THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
	``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
	LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
	A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR
	CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
	EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
	PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
	PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
	LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
	NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
	SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

	*/

	#ifdef HAVE_CONFIG_H
	#include "config.h"
	#endif

	#include "modes.h"
	#include "ltp.h"
	#include "quant_lsp.h"
	#include "cb_search.h"
	#include "sb_celp.h"
	#include "nb_celp.h"
	#include "vbr.h"
	#include "arch.h"
	#include <math.h>

	#ifndef NULL
	#define NULL 0
	#endif


	/* Extern declarations for all codebooks we use here */
	extern const signed char gain_cdbk_nb[];
	extern const signed char gain_cdbk_lbr[];
	extern const signed char exc_5_256_table[];
	extern const signed char exc_5_64_table[];
	extern const signed char exc_8_128_table[];
	extern const signed char exc_10_32_table[];
	extern const signed char exc_10_16_table[];
	extern const signed char exc_20_32_table[];


	/* Parameters for Long-Term Prediction (LTP)*/
	static const ltp_params ltp_params_nb = {
	gain_cdbk_nb,
	7,
	7
	};

	/* Parameters for Long-Term Prediction (LTP)*/
	static const ltp_params ltp_params_vlbr = {
	gain_cdbk_lbr,
	5,
	0
	};

	/* Parameters for Long-Term Prediction (LTP)*/
	static const ltp_params ltp_params_lbr = {
	gain_cdbk_lbr,
	5,
	7
	};

	/* Parameters for Long-Term Prediction (LTP)*/
	static const ltp_params ltp_params_med = {
	gain_cdbk_lbr,
	5,
	7
	};

	/* Split-VQ innovation parameters for very low bit-rate narrowband */
	static const split_cb_params split_cb_nb_vlbr = {
	10, /subvect_size/
	4, /nb_subvect/
	exc_10_16_table, /shape_cb/
	4, /shape_bits/
	0,
	};

	/* Split-VQ innovation parameters for very low bit-rate narrowband */
	static const split_cb_params split_cb_nb_ulbr = {
	20, /subvect_size/
	2, /nb_subvect/
	exc_20_32_table, /shape_cb/
	5, /shape_bits/
	0,
	};

	/* Split-VQ innovation parameters for low bit-rate narrowband */
	static const split_cb_params split_cb_nb_lbr = {
	10, /subvect_size/
	4, /nb_subvect/
	exc_10_32_table, /shape_cb/
	5, /shape_bits/
	0,
	};


	/* Split-VQ innovation parameters narrowband */
	static const split_cb_params split_cb_nb = {
	5, /subvect_size/
	8, /nb_subvect/
	exc_5_64_table, /shape_cb/
	6, /shape_bits/
	0,
	};

	/* Split-VQ innovation parameters narrowband */
	static const split_cb_params split_cb_nb_med = {
	8, /subvect_size/
	5, /nb_subvect/
	exc_8_128_table, /shape_cb/
	7, /shape_bits/
	0,
	};

	/* Split-VQ innovation for low-band wideband */
	static const split_cb_params split_cb_sb = {
	5, /subvect_size/
	8, /nb_subvect/
	exc_5_256_table, /shape_cb/
	8, /shape_bits/
	0,
	};



	/* 2150 bps "vocoder-like" mode for comfort noise */
	static const SpeexSubmode nb_submode1 = {
	0,
	1,
	0,
	0,
	/* LSP quantization */
	lsp_quant_lbr,
	lsp_unquant_lbr,
	/* No pitch quantization */
	forced_pitch_quant,
	forced_pitch_unquant,
	NULL,
	/* No innovation quantization (noise only) */
	noise_codebook_quant,
	noise_codebook_unquant,
	NULL,
	-1,
	43
	};

	/* 3.95 kbps very low bit-rate mode */
	static const SpeexSubmode nb_submode8 = {
	0,
	1,
	0,
	0,
	/LSP quantization/
	lsp_quant_lbr,
	lsp_unquant_lbr,
	/No pitch quantization/
	forced_pitch_quant,
	forced_pitch_unquant,
	NULL,
	/Innovation quantization/
	split_cb_search_shape_sign,
	split_cb_shape_sign_unquant,
	&split_cb_nb_ulbr,
	QCONST16(.5,15),
	79
	};

	/* 5.95 kbps very low bit-rate mode */
	static const SpeexSubmode nb_submode2 = {
	0,
	0,
	0,
	0,
	/LSP quantization/
	lsp_quant_lbr,
	lsp_unquant_lbr,
	/No pitch quantization/
	pitch_search_3tap,
	pitch_unquant_3tap,
	&ltp_params_vlbr,
	/Innovation quantization/
	split_cb_search_shape_sign,
	split_cb_shape_sign_unquant,
	&split_cb_nb_vlbr,
	QCONST16(.6,15),
	119
	};

	/* 8 kbps low bit-rate mode */
	static const SpeexSubmode nb_submode3 = {
	-1,
	0,
	1,
	0,
	/LSP quantization/
	lsp_quant_lbr,
	lsp_unquant_lbr,
	/Pitch quantization/
	pitch_search_3tap,
	pitch_unquant_3tap,
	&ltp_params_lbr,
	/Innovation quantization/
	split_cb_search_shape_sign,
	split_cb_shape_sign_unquant,
	&split_cb_nb_lbr,
	QCONST16(.55,15),
	160
	};

	/* 11 kbps medium bit-rate mode */
	static const SpeexSubmode nb_submode4 = {
	-1,
	0,
	1,
	0,
	/LSP quantization/
	lsp_quant_lbr,
	lsp_unquant_lbr,
	/Pitch quantization/
	pitch_search_3tap,
	pitch_unquant_3tap,
	&ltp_params_med,
	/Innovation quantization/
	split_cb_search_shape_sign,
	split_cb_shape_sign_unquant,
	&split_cb_nb_med,
	QCONST16(.45,15),
	220
	};

	/* 15 kbps high bit-rate mode */
	static const SpeexSubmode nb_submode5 = {
	-1,
	0,
	3,
	0,
	/LSP quantization/
	lsp_quant_nb,
	lsp_unquant_nb,
	/Pitch quantization/
	pitch_search_3tap,
	pitch_unquant_3tap,
	&ltp_params_nb,
	/Innovation quantization/
	split_cb_search_shape_sign,
	split_cb_shape_sign_unquant,
	&split_cb_nb,
	QCONST16(.3,15),
	300
	};

	/* 18.2 high bit-rate mode */
	static const SpeexSubmode nb_submode6 = {
	-1,
	0,
	3,
	0,
	/LSP quantization/
	lsp_quant_nb,
	lsp_unquant_nb,
	/Pitch quantization/
	pitch_search_3tap,
	pitch_unquant_3tap,
	&ltp_params_nb,
	/Innovation quantization/
	split_cb_search_shape_sign,
	split_cb_shape_sign_unquant,
	&split_cb_sb,
	QCONST16(.2,15),
	364
	};

	/* 24.6 kbps high bit-rate mode */
	static const SpeexSubmode nb_submode7 = {
	-1,
	0,
	3,
	1,
	/LSP quantization/
	lsp_quant_nb,
	lsp_unquant_nb,
	/Pitch quantization/
	pitch_search_3tap,
	pitch_unquant_3tap,
	&ltp_params_nb,
	/Innovation quantization/
	split_cb_search_shape_sign,
	split_cb_shape_sign_unquant,
	&split_cb_nb,
	QCONST16(.1,15),
	492
	};


	/* Default mode for narrowband */
	static const SpeexNBMode nb_mode = {
	160, /frameSize/
	40, /subframeSize/
	10, /lpcSize/
	17, /pitchStart/
	144, /pitchEnd/
	#ifdef FIXED_POINT
	29491, 19661, /* gamma1, gamma2 */
	#else
	0.9, 0.6, /* gamma1, gamma2 */
	#endif
	QCONST16(.0002,15), /lpc_floor/
	{NULL, &nb_submode1, &nb_submode2, &nb_submode3, &nb_submode4, &nb_submode5, &nb_submode6, &nb_submode7,
	&nb_submode8, NULL, NULL, NULL, NULL, NULL, NULL, NULL},
	5,
	{1, 8, 2, 3, 3, 4, 4, 5, 5, 6, 7}
	};


	/* Default mode for narrowband */
	EXPORT const SpeexMode speex_nb_mode = {
	&nb_mode,
	nb_mode_query,
	"narrowband",
	0,
	4,
	&nb_encoder_init,
	&nb_encoder_destroy,
	&nb_encode,
	&nb_decoder_init,
	&nb_decoder_destroy,
	&nb_decode,
	&nb_encoder_ctl,
	&nb_decoder_ctl,
	};



	EXPORT int speex_mode_query(const SpeexMode mode, int request, void ptr)
	{
	return mode->query(mode->mode, request, ptr);
	}

	#ifdef FIXED_DEBUG
	long long spx_mips=0;
	#endif