From 0edb3954e863218f756cc637ecd10eb742b115b6 Mon Sep 17 00:00:00 2001
From: Jean-Marc Valin <jmvalin@amazon.com>
Date: Fri, 2 Dec 2022 16:22:03 -0500
Subject: [PATCH] Minor cleanup

---
 silk/dred_coding.c  |   6 +-
 silk/dred_coding.h  |   6 +-
 silk/dred_encoder.c |  10 +--
 silk/dred_encoder.h |   6 +-
 silk/dred_entropy.c | 194 --------------------------------------------
 5 files changed, 14 insertions(+), 208 deletions(-)
 delete mode 100644 silk/dred_entropy.c

diff --git a/silk/dred_coding.c b/silk/dred_coding.c
index 9b0381d2..e6f65f7f 100644
--- a/silk/dred_coding.c
+++ b/silk/dred_coding.c
@@ -25,13 +25,13 @@
    SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */
 
-#include <math.h>
-#include <stdio.h>
-
 #ifdef HAVE_CONFIG_H
 #include "config.h"
 #endif
 
+#include <math.h>
+#include <stdio.h>
+
 #include "celt/entenc.h"
 #include "celt/vq.h"
 #include "celt/cwrs.h"
diff --git a/silk/dred_coding.h b/silk/dred_coding.h
index 9f8c9c63..a36f93d9 100644
--- a/silk/dred_coding.h
+++ b/silk/dred_coding.h
@@ -25,8 +25,8 @@
    SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */
 
-#ifndef _DRED_CODING_H
-#define _DRED_CODING_H
+#ifndef DRED_CODING_H
+#define DRED_CODING_H
 
 #include "opus_types.h"
 #include "entcode.h"
@@ -39,4 +39,4 @@ void dred_decode_state(ec_enc *dec, float *x);
 
 void dred_decode_latents(ec_dec *dec, float *x, const opus_uint16 *scale, const opus_uint16 *r, const opus_uint16 *p0);
 
-#endif
\ No newline at end of file
+#endif
diff --git a/silk/dred_encoder.c b/silk/dred_encoder.c
index 5470b952..a77e273e 100644
--- a/silk/dred_encoder.c
+++ b/silk/dred_encoder.c
@@ -25,6 +25,10 @@
    SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */
 
+#ifdef HAVE_CONFIG_H
+#include "config.h"
+#endif
+
 #include <string.h>
 
 #if 1
@@ -32,10 +36,6 @@
 #include <math.h>
 #endif
 
-#ifdef HAVE_CONFIG_H
-#include "config.h"
-#endif
-
 #include "dred_encoder.h"
 #include "dred_coding.h"
 #include "celt/entenc.h"
@@ -140,4 +140,4 @@ void dred_encode_silk_frame(DREDEnc *enc, const opus_int16 *silk_frame)
     dred_deinit_decoder(&dec);
 #endif
 
-}
\ No newline at end of file
+}
diff --git a/silk/dred_encoder.h b/silk/dred_encoder.h
index a8bb7cbf..e5f67c0e 100644
--- a/silk/dred_encoder.h
+++ b/silk/dred_encoder.h
@@ -25,8 +25,8 @@
    SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */
 
-#ifndef _DRED_ENCODER_H
-#define _DRED_ENCODER_H
+#ifndef DRED_ENCODER_H
+#define DRED_ENCODER_H
 
 #include "lpcnet.h"
 #include "dred_config.h"
@@ -53,4 +53,4 @@ void dred_deinit_encoder(DREDEnc *enc);
 
 void dred_encode_silk_frame(DREDEnc *enc, const opus_int16 *silk_frame);
 
-#endif
\ No newline at end of file
+#endif
diff --git a/silk/dred_entropy.c b/silk/dred_entropy.c
deleted file mode 100644
index ac01f48b..00000000
--- a/silk/dred_entropy.c
+++ /dev/null
@@ -1,194 +0,0 @@
-/* Copyright (c) 2022 Amazon
-   Written by Jean-Marc Valin */
-/*
-   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.
-
-   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 COPYRIGHT OWNER
-   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.
-*/
-
-#ifdef HAVE_CONFIG_H
-#include "config.h"
-#endif
-
-#include <math.h>
-#include <stdio.h>
-
-#include "celt/vq.h"
-#include "celt/cwrs.h"
-
-#define LATENT_DIM 80
-#define PVQ_DIM 24
-#define PVQ_K 82
-
-static void encode_pvq(const int *iy, int N, int K, ec_enc *enc) {
-    int fits;
-    celt_assert(N==24 || N==12 || N==6);
-    fits = (N==24 && K<=9) || (N==12 && K<=16) || (N==6);
-    /*printf("encode(%d,%d), fits=%d\n", N, K, fits);*/
-    if (fits) encode_pulses(iy, N, K, enc);
-    else {
-        int N2 = N/2;
-        int K0=0;
-        int i;
-        for (i=0;i<N2;i++) K0 += abs(iy[i]);
-        /* FIXME: Don't use uniform probability for K0. */
-        ec_enc_uint(enc, K0, K+1);
-        /*printf("K0 = %d\n", K0);*/
-        encode_pvq(iy, N2, K0, enc);
-        encode_pvq(&iy[N2], N2, K-K0, enc);
-    }
-}
-
-void dred_encode_state(ec_enc *enc, float *x) {
-    int k;
-    int iy[PVQ_DIM];
-    op_pvq_search_c(x, iy, PVQ_K, PVQ_DIM, 0);
-    for (k=0;k<PVQ_DIM;k++) printf("%d ", iy[k]);
-    printf("\n");
-    int tell1 = ec_tell(enc);
-    encode_pvq(iy, PVQ_DIM, PVQ_K, enc);
-    printf("tell: %d\n", ec_tell(enc)-tell1);
-}
-
-void dred_encode_latents(ec_enc *enc, const float *x, const opus_int16 *scale, const opus_int16 *dzone, const opus_int16 *r, const opus_int16 *p0) {
-    int i;
-    float eps = .1f;
-    int tell1 = ec_tell(enc);
-    for (i=0;i<LATENT_DIM;i++) {
-        float delta;
-        float xq;
-        int q;
-        delta = dzone[i]*(1.f/1024.f);
-        xq = x[i]*scale[i]*(1.f/256.f);
-        xq = xq - delta*tanh(xq/(delta+eps));
-        q = (int)floor(.5f+xq);
-        ec_laplace_encode_p0(enc, q, p0[i], r[i]);
-    }
-    printf("tell: %d\n", ec_tell(enc)-tell1);
-}
-
-
-
-static void decode_pvq(int *iy, int N, int K, ec_dec *dec) {
-    int fits;
-    celt_assert(N==24 || N==12 || N==6);
-    fits = (N==24 && K<=9) || (N==12 && K<=16) || (N==6);
-    /*printf("encode(%d,%d), fits=%d\n", N, K, fits);*/
-    if (fits) decode_pulses(iy, N, K, dec);
-    else {
-        int N2 = N/2;
-        int K0;
-        /* FIXME: Don't use uniform probability for K0. */
-        K0 = ec_dec_uint(dec, K+1);
-        /*printf("K0 = %d\n", K0);*/
-        decode_pvq(iy, N2, K0, dec);
-        decode_pvq(&iy[N2], N2, K-K0, dec);
-    }
-}
-
-void dred_pvq_dec(ec_enc *dec, float *x) {
-    int k;
-    int iy[PVQ_DIM];
-    int tell1 = ec_tell(dec);
-    decode_pvq(iy, PVQ_DIM, PVQ_K, dec);
-    /*printf("tell: %d\n", ec_tell(dec)-tell1);*/
-    for (k=0;k<PVQ_DIM;k++) printf("%d ", iy[k]);
-    printf("\n");
-    
-}
-
-void dred_rdovae_dec(ec_dec *dec, float *x, const opus_int16 *scale, const opus_int16 *dzone, const opus_int16 *r, const opus_int16 *p0) {
-    int i;
-    int tell1 = ec_tell(dec);
-    for (i=0;i<LATENT_DIM;i++) {
-        float xq;
-        int q;
-        q = ec_laplace_decode_p0(dec, p0[i], r[i]);
-        x[i] = q*256.f/scale[i];
-    }
-    printf("tell: %d\n", ec_tell(dec)-tell1);
-}
-
-#if 0
-#include <stdlib.h>
-
-#define DATA_SIZE 10000
-
-int main()
-{
-    ec_enc enc;
-    ec_dec dec;
-    int iter;
-    int bytes;
-    opus_int16 scale[LATENT_DIM];
-    opus_int16 dzone[LATENT_DIM];
-    opus_int16 r[LATENT_DIM];
-    opus_int16 p0[LATENT_DIM];
-    unsigned char *ptr;
-    int k;
-    
-    for (k=0;k<LATENT_DIM;k++) {
-        scale[k] = 256;
-        dzone[k] = 0;
-        r[k] = 12054;
-        p0[k] = 12893;
-    }
-    ptr = (unsigned char *)malloc(DATA_SIZE);
-    ec_enc_init(&enc,ptr,DATA_SIZE);
-    for (iter=0;iter<1;iter++) {
-        float x[PVQ_DIM];
-        float sum=1e-30;
-        for (k=0;k<PVQ_DIM;k++) {
-            x[k] = log(1e-15+(float)rand()/RAND_MAX)-log(1e-15+(float)rand()/RAND_MAX);
-            sum += fabs(x[k]);
-        }
-        for (k=0;k<PVQ_DIM;k++) x[k] *= (1.f/sum);
-        /*for (k=0;k<PVQ_DIM;k++) printf("%f ", x[k]);
-        printf("\n");*/
-        dred_encode_state(&enc, x);
-    }
-    for (iter=0;iter<1;iter++) {
-        float x[LATENT_DIM];
-        for (k=0;k<LATENT_DIM;k++) {
-            x[k] = log(1e-15+(float)rand()/RAND_MAX)-log(1e-15+(float)rand()/RAND_MAX);
-        }
-        for (k=0;k<LATENT_DIM;k++) printf("%f ", x[k]);
-        printf("\n");
-        dred_encode_latents(&enc, x, scale, dzone, r, p0);
-    }
-    bytes = (ec_tell(&enc)+7)/8;
-    ec_enc_shrink(&enc, bytes);
-    ec_enc_done(&enc);
-
-    ec_dec_init(&dec,ec_get_buffer(&enc),bytes);
-    for (iter=0;iter<1;iter++) {
-        float x[PVQ_DIM];
-        dred_pvq_dec(&dec, x);        
-    }
-    for (iter=0;iter<1;iter++) {
-        float x[LATENT_DIM];
-        dred_rdovae_dec(&dec, x, scale, dzone, r, p0);
-        for (k=0;k<LATENT_DIM;k++) printf("%f ", x[k]);
-        printf("\n");
-    }
-}
-#endif