yading@10: /* yading@10: * adaptive and fixed codebook vector operations for ACELP-based codecs yading@10: * yading@10: * Copyright (c) 2008 Vladimir Voroshilov yading@10: * yading@10: * This file is part of FFmpeg. yading@10: * yading@10: * FFmpeg is free software; you can redistribute it and/or yading@10: * modify it under the terms of the GNU Lesser General Public yading@10: * License as published by the Free Software Foundation; either yading@10: * version 2.1 of the License, or (at your option) any later version. yading@10: * yading@10: * FFmpeg is distributed in the hope that it will be useful, yading@10: * but WITHOUT ANY WARRANTY; without even the implied warranty of yading@10: * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU yading@10: * Lesser General Public License for more details. yading@10: * yading@10: * You should have received a copy of the GNU Lesser General Public yading@10: * License along with FFmpeg; if not, write to the Free Software yading@10: * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA yading@10: */ yading@10: yading@10: #include yading@10: yading@10: #include "libavutil/common.h" yading@10: #include "libavutil/float_dsp.h" yading@10: #include "avcodec.h" yading@10: #include "acelp_vectors.h" yading@10: yading@10: const uint8_t ff_fc_2pulses_9bits_track1[16] = yading@10: { yading@10: 1, 3, yading@10: 6, 8, yading@10: 11, 13, yading@10: 16, 18, yading@10: 21, 23, yading@10: 26, 28, yading@10: 31, 33, yading@10: 36, 38 yading@10: }; yading@10: const uint8_t ff_fc_2pulses_9bits_track1_gray[16] = yading@10: { yading@10: 1, 3, yading@10: 8, 6, yading@10: 18, 16, yading@10: 11, 13, yading@10: 38, 36, yading@10: 31, 33, yading@10: 21, 23, yading@10: 28, 26, yading@10: }; yading@10: yading@10: const uint8_t ff_fc_2pulses_9bits_track2_gray[32] = yading@10: { yading@10: 0, 2, yading@10: 5, 4, yading@10: 12, 10, yading@10: 7, 9, yading@10: 25, 24, yading@10: 20, 22, yading@10: 14, 15, yading@10: 19, 17, yading@10: 36, 31, yading@10: 21, 26, yading@10: 1, 6, yading@10: 16, 11, yading@10: 27, 29, yading@10: 32, 30, yading@10: 39, 37, yading@10: 34, 35, yading@10: }; yading@10: yading@10: const uint8_t ff_fc_4pulses_8bits_tracks_13[16] = yading@10: { yading@10: 0, 5, 10, 15, 20, 25, 30, 35, 40, 45, 50, 55, 60, 65, 70, 75, yading@10: }; yading@10: yading@10: const uint8_t ff_fc_4pulses_8bits_track_4[32] = yading@10: { yading@10: 3, 4, yading@10: 8, 9, yading@10: 13, 14, yading@10: 18, 19, yading@10: 23, 24, yading@10: 28, 29, yading@10: 33, 34, yading@10: 38, 39, yading@10: 43, 44, yading@10: 48, 49, yading@10: 53, 54, yading@10: 58, 59, yading@10: 63, 64, yading@10: 68, 69, yading@10: 73, 74, yading@10: 78, 79, yading@10: }; yading@10: yading@10: const float ff_pow_0_7[10] = { yading@10: 0.700000, 0.490000, 0.343000, 0.240100, 0.168070, yading@10: 0.117649, 0.082354, 0.057648, 0.040354, 0.028248 yading@10: }; yading@10: yading@10: const float ff_pow_0_75[10] = { yading@10: 0.750000, 0.562500, 0.421875, 0.316406, 0.237305, yading@10: 0.177979, 0.133484, 0.100113, 0.075085, 0.056314 yading@10: }; yading@10: yading@10: const float ff_pow_0_55[10] = { yading@10: 0.550000, 0.302500, 0.166375, 0.091506, 0.050328, yading@10: 0.027681, 0.015224, 0.008373, 0.004605, 0.002533 yading@10: }; yading@10: yading@10: const float ff_b60_sinc[61] = { yading@10: 0.898529 , 0.865051 , 0.769257 , 0.624054 , 0.448639 , 0.265289 , yading@10: 0.0959167 , -0.0412598 , -0.134338 , -0.178986 , -0.178528 , -0.142609 , yading@10: -0.0849304 , -0.0205078 , 0.0369568 , 0.0773926 , 0.0955200 , 0.0912781 , yading@10: 0.0689392 , 0.0357056 , 0. , -0.0305481 , -0.0504150 , -0.0570068 , yading@10: -0.0508423 , -0.0350037 , -0.0141602 , 0.00665283, 0.0230713 , 0.0323486 , yading@10: 0.0335388 , 0.0275879 , 0.0167847 , 0.00411987, -0.00747681, -0.0156860 , yading@10: -0.0193481 , -0.0183716 , -0.0137634 , -0.00704956, 0. , 0.00582886 , yading@10: 0.00939941, 0.0103760 , 0.00903320, 0.00604248, 0.00238037, -0.00109863 , yading@10: -0.00366211, -0.00497437, -0.00503540, -0.00402832, -0.00241089, -0.000579834, yading@10: 0.00103760, 0.00222778, 0.00277710, 0.00271606, 0.00213623, 0.00115967 , yading@10: 0. yading@10: }; yading@10: yading@10: void ff_acelp_fc_pulse_per_track( yading@10: int16_t* fc_v, yading@10: const uint8_t *tab1, yading@10: const uint8_t *tab2, yading@10: int pulse_indexes, yading@10: int pulse_signs, yading@10: int pulse_count, yading@10: int bits) yading@10: { yading@10: int mask = (1 << bits) - 1; yading@10: int i; yading@10: yading@10: for(i=0; i>= bits; yading@10: pulse_signs >>= 1; yading@10: } yading@10: yading@10: fc_v[tab2[pulse_indexes]] += (pulse_signs & 1) ? 8191 : -8192; yading@10: } yading@10: yading@10: void ff_decode_10_pulses_35bits(const int16_t *fixed_index, yading@10: AMRFixed *fixed_sparse, yading@10: const uint8_t *gray_decode, yading@10: int half_pulse_count, int bits) yading@10: { yading@10: int i; yading@10: int mask = (1 << bits) - 1; yading@10: yading@10: fixed_sparse->no_repeat_mask = 0; yading@10: fixed_sparse->n = 2 * half_pulse_count; yading@10: for (i = 0; i < half_pulse_count; i++) { yading@10: const int pos1 = gray_decode[fixed_index[2*i+1] & mask] + i; yading@10: const int pos2 = gray_decode[fixed_index[2*i ] & mask] + i; yading@10: const float sign = (fixed_index[2*i+1] & (1 << bits)) ? -1.0 : 1.0; yading@10: fixed_sparse->x[2*i+1] = pos1; yading@10: fixed_sparse->x[2*i ] = pos2; yading@10: fixed_sparse->y[2*i+1] = sign; yading@10: fixed_sparse->y[2*i ] = pos2 < pos1 ? -sign : sign; yading@10: } yading@10: } yading@10: yading@10: void ff_acelp_weighted_vector_sum( yading@10: int16_t* out, yading@10: const int16_t *in_a, yading@10: const int16_t *in_b, yading@10: int16_t weight_coeff_a, yading@10: int16_t weight_coeff_b, yading@10: int16_t rounder, yading@10: int shift, yading@10: int length) yading@10: { yading@10: int i; yading@10: yading@10: // Clipping required here; breaks OVERFLOW test. yading@10: for(i=0; i> shift); yading@10: } yading@10: yading@10: void ff_weighted_vector_sumf(float *out, const float *in_a, const float *in_b, yading@10: float weight_coeff_a, float weight_coeff_b, int length) yading@10: { yading@10: int i; yading@10: yading@10: for(i=0; in; i++) { yading@10: int x = in->x[i], repeats = !((in->no_repeat_mask >> i) & 1); yading@10: float y = in->y[i] * scale; yading@10: yading@10: if (in->pitch_lag > 0) yading@10: do { yading@10: out[x] += y; yading@10: y *= in->pitch_fac; yading@10: x += in->pitch_lag; yading@10: } while (x < size && repeats); yading@10: } yading@10: } yading@10: yading@10: void ff_clear_fixed_vector(float *out, const AMRFixed *in, int size) yading@10: { yading@10: int i; yading@10: yading@10: for (i=0; i < in->n; i++) { yading@10: int x = in->x[i], repeats = !((in->no_repeat_mask >> i) & 1); yading@10: yading@10: if (in->pitch_lag > 0) yading@10: do { yading@10: out[x] = 0.0; yading@10: x += in->pitch_lag; yading@10: } while (x < size && repeats); yading@10: } yading@10: } yading@10: yading@10: void ff_acelp_vectors_init(ACELPVContext *c) yading@10: { yading@10: c->weighted_vector_sumf = ff_weighted_vector_sumf; yading@10: yading@10: if(HAVE_MIPSFPU) yading@10: ff_acelp_vectors_init_mips(c); yading@10: }