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Diffstat (limited to 'ffmpeg1/libavcodec/sbrdsp.c')
-rw-r--r--ffmpeg1/libavcodec/sbrdsp.c250
1 files changed, 0 insertions, 250 deletions
diff --git a/ffmpeg1/libavcodec/sbrdsp.c b/ffmpeg1/libavcodec/sbrdsp.c
deleted file mode 100644
index 6fede79..0000000
--- a/ffmpeg1/libavcodec/sbrdsp.c
+++ /dev/null
@@ -1,250 +0,0 @@
-/*
- * AAC Spectral Band Replication decoding functions
- * Copyright (c) 2008-2009 Robert Swain ( rob opendot cl )
- * Copyright (c) 2009-2010 Alex Converse <alex.converse@gmail.com>
- *
- * This file is part of Libav.
- *
- * Libav 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.
- *
- * Libav 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 Libav; if not, write to the Free Software
- * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
- */
-
-#include "config.h"
-#include "libavutil/attributes.h"
-#include "sbrdsp.h"
-
-static void sbr_sum64x5_c(float *z)
-{
- int k;
- for (k = 0; k < 64; k++) {
- float f = z[k] + z[k + 64] + z[k + 128] + z[k + 192] + z[k + 256];
- z[k] = f;
- }
-}
-
-static float sbr_sum_square_c(float (*x)[2], int n)
-{
- float sum0 = 0.0f, sum1 = 0.0f;
- int i;
-
- for (i = 0; i < n; i += 2)
- {
- sum0 += x[i + 0][0] * x[i + 0][0];
- sum1 += x[i + 0][1] * x[i + 0][1];
- sum0 += x[i + 1][0] * x[i + 1][0];
- sum1 += x[i + 1][1] * x[i + 1][1];
- }
-
- return sum0 + sum1;
-}
-
-static void sbr_neg_odd_64_c(float *x)
-{
- int i;
- for (i = 1; i < 64; i += 2)
- x[i] = -x[i];
-}
-
-static void sbr_qmf_pre_shuffle_c(float *z)
-{
- int k;
- z[64] = z[0];
- z[65] = z[1];
- for (k = 1; k < 32; k++) {
- z[64+2*k ] = -z[64 - k];
- z[64+2*k+1] = z[ k + 1];
- }
-}
-
-static void sbr_qmf_post_shuffle_c(float W[32][2], const float *z)
-{
- int k;
- for (k = 0; k < 32; k++) {
- W[k][0] = -z[63-k];
- W[k][1] = z[k];
- }
-}
-
-static void sbr_qmf_deint_neg_c(float *v, const float *src)
-{
- int i;
- for (i = 0; i < 32; i++) {
- v[ i] = src[63 - 2*i ];
- v[63 - i] = -src[63 - 2*i - 1];
- }
-}
-
-static void sbr_qmf_deint_bfly_c(float *v, const float *src0, const float *src1)
-{
- int i;
- for (i = 0; i < 64; i++) {
- v[ i] = src0[i] - src1[63 - i];
- v[127 - i] = src0[i] + src1[63 - i];
- }
-}
-
-static av_always_inline void autocorrelate(const float x[40][2],
- float phi[3][2][2], int lag)
-{
- int i;
- float real_sum = 0.0f;
- float imag_sum = 0.0f;
- if (lag) {
- for (i = 1; i < 38; i++) {
- real_sum += x[i][0] * x[i+lag][0] + x[i][1] * x[i+lag][1];
- imag_sum += x[i][0] * x[i+lag][1] - x[i][1] * x[i+lag][0];
- }
- phi[2-lag][1][0] = real_sum + x[ 0][0] * x[lag][0] + x[ 0][1] * x[lag][1];
- phi[2-lag][1][1] = imag_sum + x[ 0][0] * x[lag][1] - x[ 0][1] * x[lag][0];
- if (lag == 1) {
- phi[0][0][0] = real_sum + x[38][0] * x[39][0] + x[38][1] * x[39][1];
- phi[0][0][1] = imag_sum + x[38][0] * x[39][1] - x[38][1] * x[39][0];
- }
- } else {
- for (i = 1; i < 38; i++) {
- real_sum += x[i][0] * x[i][0] + x[i][1] * x[i][1];
- }
- phi[2][1][0] = real_sum + x[ 0][0] * x[ 0][0] + x[ 0][1] * x[ 0][1];
- phi[1][0][0] = real_sum + x[38][0] * x[38][0] + x[38][1] * x[38][1];
- }
-}
-
-static void sbr_autocorrelate_c(const float x[40][2], float phi[3][2][2])
-{
- autocorrelate(x, phi, 0);
- autocorrelate(x, phi, 1);
- autocorrelate(x, phi, 2);
-}
-
-static void sbr_hf_gen_c(float (*X_high)[2], const float (*X_low)[2],
- const float alpha0[2], const float alpha1[2],
- float bw, int start, int end)
-{
- float alpha[4];
- int i;
-
- alpha[0] = alpha1[0] * bw * bw;
- alpha[1] = alpha1[1] * bw * bw;
- alpha[2] = alpha0[0] * bw;
- alpha[3] = alpha0[1] * bw;
-
- for (i = start; i < end; i++) {
- X_high[i][0] =
- X_low[i - 2][0] * alpha[0] -
- X_low[i - 2][1] * alpha[1] +
- X_low[i - 1][0] * alpha[2] -
- X_low[i - 1][1] * alpha[3] +
- X_low[i][0];
- X_high[i][1] =
- X_low[i - 2][1] * alpha[0] +
- X_low[i - 2][0] * alpha[1] +
- X_low[i - 1][1] * alpha[2] +
- X_low[i - 1][0] * alpha[3] +
- X_low[i][1];
- }
-}
-
-static void sbr_hf_g_filt_c(float (*Y)[2], const float (*X_high)[40][2],
- const float *g_filt, int m_max, intptr_t ixh)
-{
- int m;
-
- for (m = 0; m < m_max; m++) {
- Y[m][0] = X_high[m][ixh][0] * g_filt[m];
- Y[m][1] = X_high[m][ixh][1] * g_filt[m];
- }
-}
-
-static av_always_inline void sbr_hf_apply_noise(float (*Y)[2],
- const float *s_m,
- const float *q_filt,
- int noise,
- float phi_sign0,
- float phi_sign1,
- int m_max)
-{
- int m;
-
- for (m = 0; m < m_max; m++) {
- float y0 = Y[m][0];
- float y1 = Y[m][1];
- noise = (noise + 1) & 0x1ff;
- if (s_m[m]) {
- y0 += s_m[m] * phi_sign0;
- y1 += s_m[m] * phi_sign1;
- } else {
- y0 += q_filt[m] * ff_sbr_noise_table[noise][0];
- y1 += q_filt[m] * ff_sbr_noise_table[noise][1];
- }
- Y[m][0] = y0;
- Y[m][1] = y1;
- phi_sign1 = -phi_sign1;
- }
-}
-
-static void sbr_hf_apply_noise_0(float (*Y)[2], const float *s_m,
- const float *q_filt, int noise,
- int kx, int m_max)
-{
- sbr_hf_apply_noise(Y, s_m, q_filt, noise, 1.0, 0.0, m_max);
-}
-
-static void sbr_hf_apply_noise_1(float (*Y)[2], const float *s_m,
- const float *q_filt, int noise,
- int kx, int m_max)
-{
- float phi_sign = 1 - 2 * (kx & 1);
- sbr_hf_apply_noise(Y, s_m, q_filt, noise, 0.0, phi_sign, m_max);
-}
-
-static void sbr_hf_apply_noise_2(float (*Y)[2], const float *s_m,
- const float *q_filt, int noise,
- int kx, int m_max)
-{
- sbr_hf_apply_noise(Y, s_m, q_filt, noise, -1.0, 0.0, m_max);
-}
-
-static void sbr_hf_apply_noise_3(float (*Y)[2], const float *s_m,
- const float *q_filt, int noise,
- int kx, int m_max)
-{
- float phi_sign = 1 - 2 * (kx & 1);
- sbr_hf_apply_noise(Y, s_m, q_filt, noise, 0.0, -phi_sign, m_max);
-}
-
-av_cold void ff_sbrdsp_init(SBRDSPContext *s)
-{
- s->sum64x5 = sbr_sum64x5_c;
- s->sum_square = sbr_sum_square_c;
- s->neg_odd_64 = sbr_neg_odd_64_c;
- s->qmf_pre_shuffle = sbr_qmf_pre_shuffle_c;
- s->qmf_post_shuffle = sbr_qmf_post_shuffle_c;
- s->qmf_deint_neg = sbr_qmf_deint_neg_c;
- s->qmf_deint_bfly = sbr_qmf_deint_bfly_c;
- s->autocorrelate = sbr_autocorrelate_c;
- s->hf_gen = sbr_hf_gen_c;
- s->hf_g_filt = sbr_hf_g_filt_c;
-
- s->hf_apply_noise[0] = sbr_hf_apply_noise_0;
- s->hf_apply_noise[1] = sbr_hf_apply_noise_1;
- s->hf_apply_noise[2] = sbr_hf_apply_noise_2;
- s->hf_apply_noise[3] = sbr_hf_apply_noise_3;
-
- if (ARCH_ARM)
- ff_sbrdsp_init_arm(s);
- if (ARCH_X86)
- ff_sbrdsp_init_x86(s);
- if (ARCH_MIPS)
- ff_sbrdsp_init_mips(s);
-}
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