making act segmenter

1 files changed, 0 insertions, 189 deletions

diff --git a/ffmpeg1/libavcodec/acelp_pitch_delay.c b/ffmpeg1/libavcodec/acelp_pitch_delay.c
deleted file mode 100644
index c005c4b..0000000
--- a/ffmpeg1/libavcodec/acelp_pitch_delay.c
+++ /dev/null
@@ -1,189 +0,0 @@
-/*
- * gain code, gain pitch and pitch delay decoding
- *
- * 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 "libavutil/common.h"
-#include "libavutil/float_dsp.h"
-#include "libavutil/libm.h"
-#include "libavutil/mathematics.h"
-#include "avcodec.h"
-#include "acelp_pitch_delay.h"
-#include "celp_math.h"
-
-int ff_acelp_decode_8bit_to_1st_delay3(int ac_index)
-{
-    ac_index += 58;
-    if(ac_index > 254)
-        ac_index = 3 * ac_index - 510;
-    return ac_index;
-}
-
-int ff_acelp_decode_4bit_to_2nd_delay3(
-        int ac_index,
-        int pitch_delay_min)
-{
-    if(ac_index < 4)
-        return 3 * (ac_index + pitch_delay_min);
-    else if(ac_index < 12)
-        return 3 * pitch_delay_min + ac_index + 6;
-    else
-        return 3 * (ac_index + pitch_delay_min) - 18;
-}
-
-int ff_acelp_decode_5_6_bit_to_2nd_delay3(
-        int ac_index,
-        int pitch_delay_min)
-{
-        return 3 * pitch_delay_min + ac_index - 2;
-}
-
-int ff_acelp_decode_9bit_to_1st_delay6(int ac_index)
-{
-    if(ac_index < 463)
-        return ac_index + 105;
-    else
-        return 6 * (ac_index - 368);
-}
-int ff_acelp_decode_6bit_to_2nd_delay6(
-        int ac_index,
-        int pitch_delay_min)
-{
-    return 6 * pitch_delay_min + ac_index - 3;
-}
-
-void ff_acelp_update_past_gain(
-    int16_t* quant_energy,
-    int gain_corr_factor,
-    int log2_ma_pred_order,
-    int erasure)
-{
-    int i;
-    int avg_gain=quant_energy[(1 << log2_ma_pred_order) - 1]; // (5.10)
-
-    for(i=(1 << log2_ma_pred_order) - 1; i>0; i--)
-    {
-        avg_gain       += quant_energy[i-1];
-        quant_energy[i] = quant_energy[i-1];
-    }
-
-    if(erasure)
-        quant_energy[0] = FFMAX(avg_gain >> log2_ma_pred_order, -10240) - 4096; // -10 and -4 in (5.10)
-    else
-        quant_energy[0] = (6165 * ((ff_log2_q15(gain_corr_factor) >> 2) - (13 << 13))) >> 13;
-}
-
-int16_t ff_acelp_decode_gain_code(
-    DSPContext *dsp,
-    int gain_corr_factor,
-    const int16_t* fc_v,
-    int mr_energy,
-    const int16_t* quant_energy,
-    const int16_t* ma_prediction_coeff,
-    int subframe_size,
-    int ma_pred_order)
-{
-    int i;
-
-    mr_energy <<= 10;
-
-    for(i=0; i<ma_pred_order; i++)
-        mr_energy += quant_energy[i] * ma_prediction_coeff[i];
-
-#ifdef G729_BITEXACT
-    mr_energy += (((-6165LL * ff_log2(dsp->scalarproduct_int16(fc_v, fc_v, subframe_size, 0))) >> 3) & ~0x3ff);
-
-    mr_energy = (5439 * (mr_energy >> 15)) >> 8;           // (0.15) = (0.15) * (7.23)
-
-    return bidir_sal(
-               ((ff_exp2(mr_energy & 0x7fff) + 16) >> 5) * (gain_corr_factor >> 1),
-               (mr_energy >> 15) - 25
-           );
-#else
-    mr_energy = gain_corr_factor * exp(M_LN10 / (20 << 23) * mr_energy) /
-                sqrt(dsp->scalarproduct_int16(fc_v, fc_v, subframe_size));
-    return mr_energy >> 12;
-#endif
-}
-
-float ff_amr_set_fixed_gain(float fixed_gain_factor, float fixed_mean_energy,
-                            float *prediction_error, float energy_mean,
-                            const float *pred_table)
-{
-    // Equations 66-69:
-    // ^g_c = ^gamma_gc * 100.05 (predicted dB + mean dB - dB of fixed vector)
-    // Note 10^(0.05 * -10log(average x2)) = 1/sqrt((average x2)).
-    float val = fixed_gain_factor *
-        exp2f(M_LOG2_10 * 0.05 *
-              (avpriv_scalarproduct_float_c(pred_table, prediction_error, 4) +
-               energy_mean)) /
-        sqrtf(fixed_mean_energy);
-
-    // update quantified prediction error energy history
-    memmove(&prediction_error[0], &prediction_error[1],
-            3 * sizeof(prediction_error[0]));
-    prediction_error[3] = 20.0 * log10f(fixed_gain_factor);
-
-    return val;
-}
-
-void ff_decode_pitch_lag(int *lag_int, int *lag_frac, int pitch_index,
-                         const int prev_lag_int, const int subframe,
-                         int third_as_first, int resolution)
-{
-    /* Note n * 10923 >> 15 is floor(x/3) for 0 <= n <= 32767 */
-    if (subframe == 0 || (subframe == 2 && third_as_first)) {
-
-        if (pitch_index < 197)
-            pitch_index += 59;
-        else
-            pitch_index = 3 * pitch_index - 335;
-
-    } else {
-        if (resolution == 4) {
-            int search_range_min = av_clip(prev_lag_int - 5, PITCH_DELAY_MIN,
-                                           PITCH_DELAY_MAX - 9);
-
-            // decoding with 4-bit resolution
-            if (pitch_index < 4) {
-                // integer only precision for [search_range_min, search_range_min+3]
-                pitch_index = 3 * (pitch_index + search_range_min) + 1;
-            } else if (pitch_index < 12) {
-                // 1/3 fractional precision for [search_range_min+3 1/3, search_range_min+5 2/3]
-                pitch_index += 3 * search_range_min + 7;
-            } else {
-                // integer only precision for [search_range_min+6, search_range_min+9]
-                pitch_index = 3 * (pitch_index + search_range_min - 6) + 1;
-            }
-        } else {
-            // decoding with 5 or 6 bit resolution, 1/3 fractional precision
-            pitch_index--;
-
-            if (resolution == 5) {
-                pitch_index += 3 * av_clip(prev_lag_int - 10, PITCH_DELAY_MIN,
-                                           PITCH_DELAY_MAX - 19);
-            } else
-                pitch_index += 3 * av_clip(prev_lag_int - 5, PITCH_DELAY_MIN,
-                                           PITCH_DELAY_MAX - 9);
-        }
-    }
-    *lag_int  = pitch_index * 10923 >> 15;
-    *lag_frac = pitch_index - 3 * *lag_int - 1;
-}