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Diffstat (limited to 'libspeex/modes_wb.c')
-rw-r--r-- | libspeex/modes_wb.c | 300 |
1 files changed, 300 insertions, 0 deletions
diff --git a/libspeex/modes_wb.c b/libspeex/modes_wb.c new file mode 100644 index 0000000..4b575b2 --- /dev/null +++ b/libspeex/modes_wb.c @@ -0,0 +1,300 @@ +/* Copyright (C) 2002-2007 Jean-Marc Valin + File: modes.c + + Describes the wideband 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> +#include "os_support.h" + + +#ifndef NULL +#define NULL 0 +#endif + +const SpeexMode * const speex_mode_list[SPEEX_NB_MODES] = {&speex_nb_mode, &speex_wb_mode, &speex_uwb_mode}; + +extern const signed char hexc_table[]; +extern const signed char hexc_10_32_table[]; + +#ifndef DISABLE_WIDEBAND + +/* Split-VQ innovation for high-band wideband */ +static const split_cb_params split_cb_high = { + 8, /*subvect_size*/ + 5, /*nb_subvect*/ + hexc_table, /*shape_cb*/ + 7, /*shape_bits*/ + 1, +}; + + +/* Split-VQ innovation for high-band wideband */ +static const split_cb_params split_cb_high_lbr = { + 10, /*subvect_size*/ + 4, /*nb_subvect*/ + hexc_10_32_table, /*shape_cb*/ + 5, /*shape_bits*/ + 0, +}; + +#endif + + +static const SpeexSubmode wb_submode1 = { + 0, + 0, + 1, + 0, + /*LSP quantization*/ + lsp_quant_high, + lsp_unquant_high, + /*Pitch quantization*/ + NULL, + NULL, + NULL, + /*No innovation quantization*/ + NULL, + NULL, + NULL, + -1, + 36 +}; + + +static const SpeexSubmode wb_submode2 = { + 0, + 0, + 1, + 0, + /*LSP quantization*/ + lsp_quant_high, + lsp_unquant_high, + /*Pitch quantization*/ + NULL, + NULL, + NULL, + /*Innovation quantization*/ + split_cb_search_shape_sign, + split_cb_shape_sign_unquant, +#ifdef DISABLE_WIDEBAND + NULL, +#else + &split_cb_high_lbr, +#endif + -1, + 112 +}; + + +static const SpeexSubmode wb_submode3 = { + 0, + 0, + 1, + 0, + /*LSP quantization*/ + lsp_quant_high, + lsp_unquant_high, + /*Pitch quantization*/ + NULL, + NULL, + NULL, + /*Innovation quantization*/ + split_cb_search_shape_sign, + split_cb_shape_sign_unquant, +#ifdef DISABLE_WIDEBAND + NULL, +#else + &split_cb_high, +#endif + -1, + 192 +}; + +static const SpeexSubmode wb_submode4 = { + 0, + 0, + 1, + 1, + /*LSP quantization*/ + lsp_quant_high, + lsp_unquant_high, + /*Pitch quantization*/ + NULL, + NULL, + NULL, + /*Innovation quantization*/ + split_cb_search_shape_sign, + split_cb_shape_sign_unquant, +#ifdef DISABLE_WIDEBAND + NULL, +#else + &split_cb_high, +#endif + -1, + 352 +}; + + +/* Split-band wideband CELP mode*/ +static const SpeexSBMode sb_wb_mode = { + &speex_nb_mode, + 160, /*frameSize*/ + 40, /*subframeSize*/ + 8, /*lpcSize*/ +#ifdef FIXED_POINT + 29491, 19661, /* gamma1, gamma2 */ +#else + 0.9, 0.6, /* gamma1, gamma2 */ +#endif + QCONST16(.0002,15), /*lpc_floor*/ + QCONST16(0.9f,15), + {NULL, &wb_submode1, &wb_submode2, &wb_submode3, &wb_submode4, NULL, NULL, NULL}, + 3, + {1, 8, 2, 3, 4, 5, 5, 6, 6, 7, 7}, + {1, 1, 1, 1, 1, 1, 2, 2, 3, 3, 4}, +#ifndef DISABLE_VBR + vbr_hb_thresh, +#endif + 5 +}; + + +const SpeexMode speex_wb_mode = { + &sb_wb_mode, + wb_mode_query, + "wideband (sub-band CELP)", + 1, + 4, + &sb_encoder_init, + &sb_encoder_destroy, + &sb_encode, + &sb_decoder_init, + &sb_decoder_destroy, + &sb_decode, + &sb_encoder_ctl, + &sb_decoder_ctl, +}; + + + +/* "Ultra-wideband" mode stuff */ + + + +/* Split-band "ultra-wideband" (32 kbps) CELP mode*/ +static const SpeexSBMode sb_uwb_mode = { + &speex_wb_mode, + 320, /*frameSize*/ + 80, /*subframeSize*/ + 8, /*lpcSize*/ +#ifdef FIXED_POINT + 29491, 19661, /* gamma1, gamma2 */ +#else + 0.9, 0.6, /* gamma1, gamma2 */ +#endif + QCONST16(.0002,15), /*lpc_floor*/ + QCONST16(0.7f,15), + {NULL, &wb_submode1, NULL, NULL, NULL, NULL, NULL, NULL}, + 1, + {0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10}, + {0, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1}, +#ifndef DISABLE_VBR + vbr_uhb_thresh, +#endif + 2 +}; + +int wb_mode_query(const void *mode, int request, void *ptr) +{ + const SpeexSBMode *m = (const SpeexSBMode*)mode; + + switch (request) + { + case SPEEX_MODE_FRAME_SIZE: + *((int*)ptr)=2*m->frameSize; + break; + case SPEEX_SUBMODE_BITS_PER_FRAME: + if (*((int*)ptr)==0) + *((int*)ptr) = SB_SUBMODE_BITS+1; + else if (m->submodes[*((int*)ptr)]==NULL) + *((int*)ptr) = -1; + else + *((int*)ptr) = m->submodes[*((int*)ptr)]->bits_per_frame; + break; + default: + speex_warning_int("Unknown wb_mode_query request: ", request); + return -1; + } + return 0; +} + + +const SpeexMode speex_uwb_mode = { + &sb_uwb_mode, + wb_mode_query, + "ultra-wideband (sub-band CELP)", + 2, + 4, + &sb_encoder_init, + &sb_encoder_destroy, + &sb_encode, + &sb_decoder_init, + &sb_decoder_destroy, + &sb_decode, + &sb_encoder_ctl, + &sb_decoder_ctl, +}; + +/* We have defined speex_lib_get_mode() as a macro in speex.h */ +#undef speex_lib_get_mode + +const SpeexMode * speex_lib_get_mode (int mode) +{ + if (mode < 0 || mode >= SPEEX_NB_MODES) return NULL; + + return speex_mode_list[mode]; +} + + + |