AF: remove af_stats

This was not very useful.

3 files changed, 0 insertions, 162 deletions

diff --git a/Makefile b/Makefile
index c16d01688a..ef712c29ae 100644
--- a/Makefile
+++ b/Makefile
@@ -219,7 +219,6 @@ SRCS_COMMON = asxparser.c \
               libaf/af_resample.c \
               libaf/af_scaletempo.c \
               libaf/af_sinesuppress.c \
-              libaf/af_stats.c \
               libaf/af_sub.c \
               libaf/af_surround.c \
               libaf/af_sweep.c \
diff --git a/libaf/af.c b/libaf/af.c
index b60e572bb4..7596376a99 100644
--- a/libaf/af.c
+++ b/libaf/af.c
@@ -47,7 +47,6 @@ extern af_info_t af_info_center;
 extern af_info_t af_info_sinesuppress;
 extern af_info_t af_info_karaoke;
 extern af_info_t af_info_scaletempo;
-extern af_info_t af_info_stats;
 extern af_info_t af_info_bs2b;
 
 static af_info_t* filter_list[]={
@@ -77,7 +76,6 @@ static af_info_t* filter_list[]={
    &af_info_sinesuppress,
    &af_info_karaoke,
    &af_info_scaletempo,
-   &af_info_stats,
 #ifdef CONFIG_LIBBS2B
    &af_info_bs2b,
 #endif
diff --git a/libaf/af_stats.c b/libaf/af_stats.c
deleted file mode 100644
index 3d78f72faa..0000000000
--- a/libaf/af_stats.c
+++ /dev/null
@@ -1,159 +0,0 @@
-/*
- * Copyright (C) 2009 Nicolas George <nicolas.george@normalesup.org>
- *
- * This file is part of MPlayer.
- *
- * MPlayer is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * MPlayer 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 General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License along
- * with MPlayer; if not, write to the Free Software Foundation, Inc.,
- * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
- */
-
-#include <stdio.h>
-#include <stdlib.h>
-#include <inttypes.h>
-#include <math.h>
-
-#include "af.h"
-
-#define MAX_DB  80
-#define MIN_VAL 1E-8
-
-struct af_stats {
-    long long n_samples;
-    double tsquare;
-    int max;
-    long long histogram[65536];
-};
-
-static inline int logdb(double v)
-{
-    if (v > 1)
-        return 0;
-    if (v <= MIN_VAL)
-        return MAX_DB - 1;
-    return log(v) / -0.23025850929940456840179914546843642076;
-}
-
-static int stats_init(af_instance_t *af, struct af_stats *s, af_data_t *data)
-{
-    int i;
-
-    if (!data)
-        return AF_ERROR;
-    *(af->data) = *data;
-    af->data->format = AF_FORMAT_S16_NE;
-    af->data->bps    = 2;
-    s->n_samples = 0;
-    s->tsquare   = 0;
-    s->max       = 0;
-    for (i = 0; i < 65536; i++)
-        s->histogram[i] = 0;
-    return af_test_output(af, data);
-}
-
-static void stats_print(struct af_stats *s)
-{
-    int i;
-    long long sum;
-    float v;
-    long long h[MAX_DB];
-
-    s->tsquare /= 32768 * 32768;
-    mp_msg(MSGT_AFILTER, MSGL_INFO, "stats: n_samples: %lld\n", s->n_samples);
-    if (s->n_samples == 0)
-        return;
-    mp_msg(MSGT_AFILTER, MSGL_INFO, "stats: mean_volume: -%d dB\n",
-           logdb(s->tsquare / s->n_samples));
-    mp_msg(MSGT_AFILTER, MSGL_INFO, "stats: max_volume: -%d dB\n",
-           logdb(s->max / (32768.0 * 32768.0)));
-    for (i = 0; i < MAX_DB; i++)
-        h[i] = 0;
-    for (i = 0; i < 65536; i++) {
-        v = (i - 32768) / 32768.0;
-        h[logdb(v * v)] += s->histogram[i];
-    }
-    for (i = 0; i < MAX_DB; i++)
-        if (h[i] != 0)
-            break;
-    sum = 0;
-    for (; i < MAX_DB; i++) {
-        sum += h[i];
-        mp_msg(MSGT_AFILTER, MSGL_INFO, "stats: histogram_%ddb: %lld\n",
-               i, h[i]);
-        if (sum > s->n_samples / 1000)
-            break;
-    }
-}
-
-static int control(struct af_instance_s *af, int cmd, void *arg)
-{
-    struct af_stats *s = af->setup;
-
-    switch(cmd) {
-        case AF_CONTROL_REINIT:
-            return stats_init(af, s, arg);
-
-        case AF_CONTROL_PRE_DESTROY:
-            stats_print(s);
-            return AF_OK;
-    }
-    return AF_UNKNOWN;
-}
-
-static void uninit(struct af_instance_s *af)
-{
-    free(af->data);
-    free(af->setup);
-}
-
-static af_data_t *play(struct af_instance_s *af, af_data_t *data)
-{
-    struct af_stats *s = af->setup;
-    int16_t *a, *aend;
-    int v, v2;
-
-    a = data->audio;
-    aend = (int16_t *)((char *)data->audio + data->len);
-    s->n_samples += aend - a;
-    for (; a < aend; a++) {
-        v = *a;
-        v2 = v * v;
-        s->tsquare += v2;
-        s->histogram[v + 32768]++;
-        if (v2 > s->max)
-            s->max = v2;
-    }
-    return data;
-}
-
-static int af_open(af_instance_t *af)
-{
-    af->control = control;
-    af->uninit  = uninit;
-    af->play    = play;
-    af->mul     = 1;
-    af->data    = malloc(sizeof(af_data_t));
-    af->setup   = malloc(sizeof(struct af_stats));
-    if (af->data == NULL || af->setup == NULL)
-        return AF_ERROR;
-    return AF_OK;
-}
-
-af_info_t af_info_stats = {
-    "Statistics audio filter",
-    "stats",
-    "Nicolas George",
-    "",
-    0,
-    af_open
-};