fa971b142d
git-svn-id: svn://svn.rockbox.org/rockbox/trunk@15310 a1c6a512-1295-4272-9138-f99709370657
304 lines
6.8 KiB
C
304 lines
6.8 KiB
C
/* Copyright (C) 2002-2007 Jean-Marc Valin
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File: modes.c
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Describes the wideband modes of the codec
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Redistribution and use in source and binary forms, with or without
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modification, are permitted provided that the following conditions
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are met:
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- Redistributions of source code must retain the above copyright
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notice, this list of conditions and the following disclaimer.
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- Redistributions in binary form must reproduce the above copyright
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notice, this list of conditions and the following disclaimer in the
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documentation and/or other materials provided with the distribution.
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- Neither the name of the Xiph.org Foundation nor the names of its
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contributors may be used to endorse or promote products derived from
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this software without specific prior written permission.
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THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR
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CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
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EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
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PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
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PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
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LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
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NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
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SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#ifdef HAVE_CONFIG_H
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#include "config-speex.h"
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#endif
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#include "modes.h"
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#include "ltp.h"
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#include "quant_lsp.h"
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#include "cb_search.h"
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#include "sb_celp.h"
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#include "nb_celp.h"
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#include "vbr.h"
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#include "misc.h"
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#include <math.h>
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#include "os_support.h"
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#ifndef NULL
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#define NULL 0
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#endif
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const SpeexMode * const speex_mode_list[SPEEX_NB_MODES] = {&speex_nb_mode, &speex_wb_mode, &speex_uwb_mode};
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extern const signed char hexc_table[];
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extern const signed char hexc_10_32_table[];
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#ifndef DISABLE_WIDEBAND
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/* Split-VQ innovation for high-band wideband */
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static const split_cb_params split_cb_high = {
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8, /*subvect_size*/
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5, /*nb_subvect*/
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hexc_table, /*shape_cb*/
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7, /*shape_bits*/
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1,
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};
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/* Split-VQ innovation for high-band wideband */
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static const split_cb_params split_cb_high_lbr = {
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10, /*subvect_size*/
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4, /*nb_subvect*/
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hexc_10_32_table, /*shape_cb*/
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5, /*shape_bits*/
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0,
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};
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#endif
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static const SpeexSubmode wb_submode1 = {
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0,
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0,
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1,
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0,
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/*LSP quantization*/
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lsp_quant_high,
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lsp_unquant_high,
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/*Pitch quantization*/
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NULL,
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NULL,
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NULL,
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/*No innovation quantization*/
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NULL,
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NULL,
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NULL,
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-1,
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36
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};
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static const SpeexSubmode wb_submode2 = {
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0,
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0,
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1,
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0,
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/*LSP quantization*/
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lsp_quant_high,
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lsp_unquant_high,
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/*Pitch quantization*/
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NULL,
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NULL,
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NULL,
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/*Innovation quantization*/
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split_cb_search_shape_sign,
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split_cb_shape_sign_unquant,
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#ifdef DISABLE_WIDEBAND
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NULL,
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#else
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&split_cb_high_lbr,
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#endif
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-1,
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112
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};
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static const SpeexSubmode wb_submode3 = {
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0,
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0,
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1,
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0,
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/*LSP quantization*/
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lsp_quant_high,
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lsp_unquant_high,
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/*Pitch quantization*/
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NULL,
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NULL,
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NULL,
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/*Innovation quantization*/
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split_cb_search_shape_sign,
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split_cb_shape_sign_unquant,
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#ifdef DISABLE_WIDEBAND
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NULL,
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#else
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&split_cb_high,
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#endif
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-1,
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192
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};
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static const SpeexSubmode wb_submode4 = {
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0,
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0,
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1,
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1,
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/*LSP quantization*/
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lsp_quant_high,
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lsp_unquant_high,
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/*Pitch quantization*/
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NULL,
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NULL,
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NULL,
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/*Innovation quantization*/
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split_cb_search_shape_sign,
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split_cb_shape_sign_unquant,
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#ifdef DISABLE_WIDEBAND
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NULL,
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#else
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&split_cb_high,
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#endif
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-1,
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352
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};
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/* Split-band wideband CELP mode*/
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static const SpeexSBMode sb_wb_mode = {
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&speex_nb_mode,
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160, /*frameSize*/
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40, /*subframeSize*/
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8, /*lpcSize*/
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640, /*bufSize*/
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#ifdef FIXED_POINT
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29491, 19661, /* gamma1, gamma2 */
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#else
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0.9, 0.6, /* gamma1, gamma2 */
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#endif
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.012, /*lag_factor*/
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QCONST16(.0002,15), /*lpc_floor*/
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QCONST16(0.9f,15),
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{NULL, &wb_submode1, &wb_submode2, &wb_submode3, &wb_submode4, NULL, NULL, NULL},
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3,
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{1, 8, 2, 3, 4, 5, 5, 6, 6, 7, 7},
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{1, 1, 1, 1, 1, 1, 2, 2, 3, 3, 4},
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vbr_hb_thresh,
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5
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};
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const SpeexMode speex_wb_mode = {
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&sb_wb_mode,
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wb_mode_query,
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"wideband (sub-band CELP)",
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1,
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4,
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&sb_encoder_init,
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&sb_encoder_destroy,
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&sb_encode,
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&sb_decoder_init,
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&sb_decoder_destroy,
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&sb_decode,
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&sb_encoder_ctl,
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&sb_decoder_ctl,
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};
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/* "Ultra-wideband" mode stuff */
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/* Split-band "ultra-wideband" (32 kbps) CELP mode*/
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static const SpeexSBMode sb_uwb_mode = {
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&speex_wb_mode,
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320, /*frameSize*/
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80, /*subframeSize*/
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8, /*lpcSize*/
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1280, /*bufSize*/
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#ifdef FIXED_POINT
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29491, 19661, /* gamma1, gamma2 */
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#else
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0.9, 0.6, /* gamma1, gamma2 */
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#endif
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.012, /*lag_factor*/
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QCONST16(.0002,15), /*lpc_floor*/
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QCONST16(0.7f,15),
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{NULL, &wb_submode1, NULL, NULL, NULL, NULL, NULL, NULL},
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1,
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{0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10},
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{0, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1},
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vbr_uhb_thresh,
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2
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};
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int wb_mode_query(const void *mode, int request, void *ptr)
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{
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const SpeexSBMode *m = (const SpeexSBMode*)mode;
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switch (request)
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{
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case SPEEX_MODE_FRAME_SIZE:
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*((int*)ptr)=2*m->frameSize;
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break;
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case SPEEX_SUBMODE_BITS_PER_FRAME:
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if (*((int*)ptr)==0)
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*((int*)ptr) = SB_SUBMODE_BITS+1;
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else if (m->submodes[*((int*)ptr)]==NULL)
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*((int*)ptr) = -1;
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else
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*((int*)ptr) = m->submodes[*((int*)ptr)]->bits_per_frame;
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break;
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default:
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speex_warning_int("Unknown wb_mode_query request: ", request);
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return -1;
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}
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return 0;
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}
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const SpeexMode speex_uwb_mode = {
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&sb_uwb_mode,
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wb_mode_query,
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"ultra-wideband (sub-band CELP)",
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2,
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4,
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&sb_encoder_init,
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&sb_encoder_destroy,
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&sb_encode,
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&sb_decoder_init,
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&sb_decoder_destroy,
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&sb_decode,
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&sb_encoder_ctl,
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&sb_decoder_ctl,
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};
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/* We have defined speex_lib_get_mode() as a macro in speex.h */
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#undef speex_lib_get_mode
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const SpeexMode * speex_lib_get_mode (int mode)
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{
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#ifdef EPIC_48K
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if (mode == SPEEX_MODEID_NB_48K) return &speex_nb_48k_mode;
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#endif
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if (mode < 0 || mode >= SPEEX_NB_MODES) return NULL;
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return speex_mode_list[mode];
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}
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