summaryrefslogtreecommitdiff
path: root/engine/voice_codecs/speex/source/libspeex/modes.c
diff options
context:
space:
mode:
Diffstat (limited to 'engine/voice_codecs/speex/source/libspeex/modes.c')
-rw-r--r--engine/voice_codecs/speex/source/libspeex/modes.c650
1 files changed, 650 insertions, 0 deletions
diff --git a/engine/voice_codecs/speex/source/libspeex/modes.c b/engine/voice_codecs/speex/source/libspeex/modes.c
new file mode 100644
index 0000000..b525872
--- /dev/null
+++ b/engine/voice_codecs/speex/source/libspeex/modes.c
@@ -0,0 +1,650 @@
+/* Copyright (C) 2002 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.
+
+*/
+
+#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 "misc.h"
+
+#ifndef NULL
+#define NULL 0
+#endif
+
+SpeexMode *speex_mode_list[SPEEX_NB_MODES] = {&speex_nb_mode, &speex_wb_mode, &speex_uwb_mode};
+
+/* Extern declarations for all codebooks we use here */
+extern signed char gain_cdbk_nb[];
+extern signed char gain_cdbk_lbr[];
+extern signed char hexc_table[];
+extern signed char exc_5_256_table[];
+extern signed char exc_5_64_table[];
+extern signed char exc_8_128_table[];
+extern signed char exc_10_32_table[];
+extern signed char exc_10_16_table[];
+extern signed char exc_20_32_table[];
+extern signed char hexc_10_32_table[];
+
+static int nb_mode_query(void *mode, int request, void *ptr);
+static int wb_mode_query(void *mode, int request, void *ptr);
+
+/* Parameters for Long-Term Prediction (LTP)*/
+static ltp_params ltp_params_nb = {
+ gain_cdbk_nb,
+ 7,
+ 7
+};
+
+/* Parameters for Long-Term Prediction (LTP)*/
+static ltp_params ltp_params_vlbr = {
+ gain_cdbk_lbr,
+ 5,
+ 0
+};
+
+/* Parameters for Long-Term Prediction (LTP)*/
+static ltp_params ltp_params_lbr = {
+ gain_cdbk_lbr,
+ 5,
+ 7
+};
+
+/* Parameters for Long-Term Prediction (LTP)*/
+static ltp_params ltp_params_med = {
+ gain_cdbk_lbr,
+ 5,
+ 7
+};
+
+/* Split-VQ innovation parameters for very low bit-rate narrowband */
+static 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 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 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 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 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 split_cb_params split_cb_sb = {
+ 5, /*subvect_size*/
+ 8, /*nb_subvect*/
+ exc_5_256_table, /*shape_cb*/
+ 8, /*shape_bits*/
+ 0,
+};
+
+/* Split-VQ innovation for high-band wideband */
+static 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 split_cb_params split_cb_high_lbr = {
+ 10, /*subvect_size*/
+ 4, /*nb_subvect*/
+ hexc_10_32_table, /*shape_cb*/
+ 5, /*shape_bits*/
+ 0,
+};
+
+/* 2150 bps "vocoder-like" mode for comfort noise */
+static 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,
+ .7, .7, -1,
+ 43
+};
+
+/* 3.95 kbps very low bit-rate mode */
+static 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,
+
+ 0.7, 0.5, .65,
+ 79
+};
+
+/* 5.95 kbps very low bit-rate mode */
+static 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,
+
+ 0.7, 0.5, .55,
+ 119
+};
+
+/* 8 kbps low bit-rate mode */
+static 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,
+
+ 0.7, 0.55, .45,
+ 160
+};
+
+/* 11 kbps medium bit-rate mode */
+static 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,
+
+ 0.7, 0.63, .35,
+ 220
+};
+
+/* 15 kbps high bit-rate mode */
+static 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,
+
+ 0.7, 0.65, .25,
+ 300
+};
+
+/* 18.2 high bit-rate mode */
+static 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,
+
+ 0.68, 0.65, .1,
+ 364
+};
+
+/* 24.6 kbps high bit-rate mode */
+static 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,
+
+ 0.65, 0.65, -1,
+ 492
+};
+
+
+/* Default mode for narrowband */
+static SpeexNBMode nb_mode = {
+ 160, /*frameSize*/
+ 40, /*subframeSize*/
+ 10, /*lpcSize*/
+ 640, /*bufSize*/
+ 17, /*pitchStart*/
+ 144, /*pitchEnd*/
+ 0.9, /*gamma1*/
+ 0.6, /*gamma2*/
+ .01, /*lag_factor*/
+ 1.0001, /*lpc_floor*/
+ 0.0, /*preemph*/
+ {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 */
+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,
+};
+
+
+/* Wideband part */
+
+static 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,
+
+ .75, .75, -1,
+ 36
+};
+
+
+static 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,
+ &split_cb_high_lbr,
+
+ .85, .6, -1,
+ 112
+};
+
+
+static 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,
+ &split_cb_high,
+
+ .75, .7, -1,
+ 192
+};
+
+static 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,
+ &split_cb_high,
+
+ .75, .75, -1,
+ 352
+};
+
+
+/* Split-band wideband CELP mode*/
+static SpeexSBMode sb_wb_mode = {
+ &speex_nb_mode,
+ 160, /*frameSize*/
+ 40, /*subframeSize*/
+ 8, /*lpcSize*/
+ 640, /*bufSize*/
+ .9, /*gamma1*/
+ 0.6, /*gamma2*/
+ .002, /*lag_factor*/
+ 1.0001, /*lpc_floor*/
+ 0.0, /*preemph*/
+ 0.9,
+ {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},
+ vbr_hb_thresh,
+ 5
+};
+
+
+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 SpeexSBMode sb_uwb_mode = {
+ &speex_wb_mode,
+ 320, /*frameSize*/
+ 80, /*subframeSize*/
+ 8, /*lpcSize*/
+ 1280, /*bufSize*/
+ .9, /*gamma1*/
+ 0.6, /*gamma2*/
+ .002, /*lag_factor*/
+ 1.0001, /*lpc_floor*/
+ 0.0, /*preemph*/
+ 0.7,
+ {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},
+ vbr_uhb_thresh,
+ 2
+};
+
+
+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,
+};
+
+
+
+
+void *speex_encoder_init(SpeexMode *mode)
+{
+ return mode->enc_init(mode);
+}
+
+void *speex_decoder_init(SpeexMode *mode)
+{
+ return mode->dec_init(mode);
+}
+
+void speex_encoder_destroy(void *state)
+{
+ (*((SpeexMode**)state))->enc_destroy(state);
+}
+
+int speex_encode(void *state, float *in, SpeexBits *bits)
+{
+ return (*((SpeexMode**)state))->enc(state, in, bits);
+}
+
+void speex_decoder_destroy(void *state)
+{
+ (*((SpeexMode**)state))->dec_destroy(state);
+}
+
+int speex_decode(void *state, SpeexBits *bits, float *out)
+{
+ return (*((SpeexMode**)state))->dec(state, bits, out);
+}
+
+
+int speex_encoder_ctl(void *state, int request, void *ptr)
+{
+ return (*((SpeexMode**)state))->enc_ctl(state, request, ptr);
+}
+
+int speex_decoder_ctl(void *state, int request, void *ptr)
+{
+ return (*((SpeexMode**)state))->dec_ctl(state, request, ptr);
+}
+
+
+
+static int nb_mode_query(void *mode, int request, void *ptr)
+{
+ SpeexNBMode *m = (SpeexNBMode*)mode;
+
+ switch (request)
+ {
+ case SPEEX_MODE_FRAME_SIZE:
+ *((int*)ptr)=m->frameSize;
+ break;
+ case SPEEX_SUBMODE_BITS_PER_FRAME:
+ if (*((int*)ptr)==0)
+ *((int*)ptr) = NB_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 nb_mode_query request: ", request);
+ return -1;
+ }
+ return 0;
+}
+
+static int wb_mode_query(void *mode, int request, void *ptr)
+{
+ SpeexSBMode *m = (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;
+}
+
+
+int speex_mode_query(SpeexMode *mode, int request, void *ptr)
+{
+ return mode->query(mode->mode, request, ptr);
+}
generated by cgit v1.2.3 (git 2.25.1) at 2026-06-07 02:14:49 +0000