diff options
Diffstat (limited to 'ffmpeg/libavcodec/acelp_vectors.c')
| -rw-r--r-- | ffmpeg/libavcodec/acelp_vectors.c | 272 |
1 files changed, 0 insertions, 272 deletions
diff --git a/ffmpeg/libavcodec/acelp_vectors.c b/ffmpeg/libavcodec/acelp_vectors.c deleted file mode 100644 index 86851a3..0000000 --- a/ffmpeg/libavcodec/acelp_vectors.c +++ /dev/null @@ -1,272 +0,0 @@ -/* - * adaptive and fixed codebook vector operations for ACELP-based codecs - * - * Copyright (c) 2008 Vladimir Voroshilov - * - * This file is part of FFmpeg. - * - * FFmpeg is free software; you can redistribute it and/or - * modify it under the terms of the GNU Lesser General Public - * License as published by the Free Software Foundation; either - * version 2.1 of the License, or (at your option) any later version. - * - * FFmpeg is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU - * Lesser General Public License for more details. - * - * You should have received a copy of the GNU Lesser General Public - * License along with FFmpeg; if not, write to the Free Software - * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA - */ - -#include <inttypes.h> - -#include "libavutil/common.h" -#include "libavutil/float_dsp.h" -#include "avcodec.h" -#include "acelp_vectors.h" - -const uint8_t ff_fc_2pulses_9bits_track1[16] = -{ - 1, 3, - 6, 8, - 11, 13, - 16, 18, - 21, 23, - 26, 28, - 31, 33, - 36, 38 -}; -const uint8_t ff_fc_2pulses_9bits_track1_gray[16] = -{ - 1, 3, - 8, 6, - 18, 16, - 11, 13, - 38, 36, - 31, 33, - 21, 23, - 28, 26, -}; - -const uint8_t ff_fc_2pulses_9bits_track2_gray[32] = -{ - 0, 2, - 5, 4, - 12, 10, - 7, 9, - 25, 24, - 20, 22, - 14, 15, - 19, 17, - 36, 31, - 21, 26, - 1, 6, - 16, 11, - 27, 29, - 32, 30, - 39, 37, - 34, 35, -}; - -const uint8_t ff_fc_4pulses_8bits_tracks_13[16] = -{ - 0, 5, 10, 15, 20, 25, 30, 35, 40, 45, 50, 55, 60, 65, 70, 75, -}; - -const uint8_t ff_fc_4pulses_8bits_track_4[32] = -{ - 3, 4, - 8, 9, - 13, 14, - 18, 19, - 23, 24, - 28, 29, - 33, 34, - 38, 39, - 43, 44, - 48, 49, - 53, 54, - 58, 59, - 63, 64, - 68, 69, - 73, 74, - 78, 79, -}; - -const float ff_pow_0_7[10] = { - 0.700000, 0.490000, 0.343000, 0.240100, 0.168070, - 0.117649, 0.082354, 0.057648, 0.040354, 0.028248 -}; - -const float ff_pow_0_75[10] = { - 0.750000, 0.562500, 0.421875, 0.316406, 0.237305, - 0.177979, 0.133484, 0.100113, 0.075085, 0.056314 -}; - -const float ff_pow_0_55[10] = { - 0.550000, 0.302500, 0.166375, 0.091506, 0.050328, - 0.027681, 0.015224, 0.008373, 0.004605, 0.002533 -}; - -const float ff_b60_sinc[61] = { - 0.898529 , 0.865051 , 0.769257 , 0.624054 , 0.448639 , 0.265289 , - 0.0959167 , -0.0412598 , -0.134338 , -0.178986 , -0.178528 , -0.142609 , --0.0849304 , -0.0205078 , 0.0369568 , 0.0773926 , 0.0955200 , 0.0912781 , - 0.0689392 , 0.0357056 , 0.0 , -0.0305481 , -0.0504150 , -0.0570068 , --0.0508423 , -0.0350037 , -0.0141602 , 0.00665283, 0.0230713 , 0.0323486 , - 0.0335388 , 0.0275879 , 0.0167847 , 0.00411987, -0.00747681, -0.0156860 , --0.0193481 , -0.0183716 , -0.0137634 , -0.00704956, 0.0 , 0.00582886 , - 0.00939941, 0.0103760 , 0.00903320, 0.00604248, 0.00238037, -0.00109863 , --0.00366211, -0.00497437, -0.00503540, -0.00402832, -0.00241089, -0.000579834, - 0.00103760, 0.00222778, 0.00277710, 0.00271606, 0.00213623, 0.00115967 , - 0. -}; - -void ff_acelp_fc_pulse_per_track( - int16_t* fc_v, - const uint8_t *tab1, - const uint8_t *tab2, - int pulse_indexes, - int pulse_signs, - int pulse_count, - int bits) -{ - int mask = (1 << bits) - 1; - int i; - - for(i=0; i<pulse_count; i++) - { - fc_v[i + tab1[pulse_indexes & mask]] += - (pulse_signs & 1) ? 8191 : -8192; // +/-1 in (2.13) - - pulse_indexes >>= bits; - pulse_signs >>= 1; - } - - fc_v[tab2[pulse_indexes]] += (pulse_signs & 1) ? 8191 : -8192; -} - -void ff_decode_10_pulses_35bits(const int16_t *fixed_index, - AMRFixed *fixed_sparse, - const uint8_t *gray_decode, - int half_pulse_count, int bits) -{ - int i; - int mask = (1 << bits) - 1; - - fixed_sparse->no_repeat_mask = 0; - fixed_sparse->n = 2 * half_pulse_count; - for (i = 0; i < half_pulse_count; i++) { - const int pos1 = gray_decode[fixed_index[2*i+1] & mask] + i; - const int pos2 = gray_decode[fixed_index[2*i ] & mask] + i; - const float sign = (fixed_index[2*i+1] & (1 << bits)) ? -1.0 : 1.0; - fixed_sparse->x[2*i+1] = pos1; - fixed_sparse->x[2*i ] = pos2; - fixed_sparse->y[2*i+1] = sign; - fixed_sparse->y[2*i ] = pos2 < pos1 ? -sign : sign; - } -} - -void ff_acelp_weighted_vector_sum( - int16_t* out, - const int16_t *in_a, - const int16_t *in_b, - int16_t weight_coeff_a, - int16_t weight_coeff_b, - int16_t rounder, - int shift, - int length) -{ - int i; - - // Clipping required here; breaks OVERFLOW test. - for(i=0; i<length; i++) - out[i] = av_clip_int16(( - in_a[i] * weight_coeff_a + - in_b[i] * weight_coeff_b + - rounder) >> shift); -} - -void ff_weighted_vector_sumf(float *out, const float *in_a, const float *in_b, - float weight_coeff_a, float weight_coeff_b, int length) -{ - int i; - - for(i=0; i<length; i++) - out[i] = weight_coeff_a * in_a[i] - + weight_coeff_b * in_b[i]; -} - -void ff_adaptive_gain_control(float *out, const float *in, float speech_energ, - int size, float alpha, float *gain_mem) -{ - int i; - float postfilter_energ = avpriv_scalarproduct_float_c(in, in, size); - float gain_scale_factor = 1.0; - float mem = *gain_mem; - - if (postfilter_energ) - gain_scale_factor = sqrt(speech_energ / postfilter_energ); - - gain_scale_factor *= 1.0 - alpha; - - for (i = 0; i < size; i++) { - mem = alpha * mem + gain_scale_factor; - out[i] = in[i] * mem; - } - - *gain_mem = mem; -} - -void ff_scale_vector_to_given_sum_of_squares(float *out, const float *in, - float sum_of_squares, const int n) -{ - int i; - float scalefactor = avpriv_scalarproduct_float_c(in, in, n); - if (scalefactor) - scalefactor = sqrt(sum_of_squares / scalefactor); - for (i = 0; i < n; i++) - out[i] = in[i] * scalefactor; -} - -void ff_set_fixed_vector(float *out, const AMRFixed *in, float scale, int size) -{ - int i; - - for (i=0; i < in->n; i++) { - int x = in->x[i], repeats = !((in->no_repeat_mask >> i) & 1); - float y = in->y[i] * scale; - - if (in->pitch_lag > 0) - do { - out[x] += y; - y *= in->pitch_fac; - x += in->pitch_lag; - } while (x < size && repeats); - } -} - -void ff_clear_fixed_vector(float *out, const AMRFixed *in, int size) -{ - int i; - - for (i=0; i < in->n; i++) { - int x = in->x[i], repeats = !((in->no_repeat_mask >> i) & 1); - - if (in->pitch_lag > 0) - do { - out[x] = 0.0; - x += in->pitch_lag; - } while (x < size && repeats); - } -} - -void ff_acelp_vectors_init(ACELPVContext *c) -{ - c->weighted_vector_sumf = ff_weighted_vector_sumf; - - if(HAVE_MIPSFPU) - ff_acelp_vectors_init_mips(c); -} |