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https://github.com/mpv-player/mpv
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AF: remove af_stats
This was not very useful.
This commit is contained in:
wm4
parent
804bf91570
commit
4a02c57135
1
Makefile
1
Makefile
@ -219,7 +219,6 @@ SRCS_COMMON = asxparser.c \
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libaf/af_resample.c \
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libaf/af_scaletempo.c \
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libaf/af_sinesuppress.c \
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libaf/af_stats.c \
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libaf/af_sub.c \
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libaf/af_surround.c \
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libaf/af_sweep.c \
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@ -47,7 +47,6 @@ extern af_info_t af_info_center;
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extern af_info_t af_info_sinesuppress;
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extern af_info_t af_info_karaoke;
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extern af_info_t af_info_scaletempo;
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extern af_info_t af_info_stats;
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extern af_info_t af_info_bs2b;
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static af_info_t* filter_list[]={
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@ -77,7 +76,6 @@ static af_info_t* filter_list[]={
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&af_info_sinesuppress,
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&af_info_karaoke,
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&af_info_scaletempo,
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&af_info_stats,
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#ifdef CONFIG_LIBBS2B
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&af_info_bs2b,
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#endif
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159
libaf/af_stats.c
159
libaf/af_stats.c
@ -1,159 +0,0 @@
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/*
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* Copyright (C) 2009 Nicolas George <nicolas.george@normalesup.org>
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*
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* This file is part of MPlayer.
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*
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* MPlayer is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* MPlayer is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License along
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* with MPlayer; if not, write to the Free Software Foundation, Inc.,
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* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
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*/
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#include <stdio.h>
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#include <stdlib.h>
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#include <inttypes.h>
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#include <math.h>
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#include "af.h"
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#define MAX_DB 80
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#define MIN_VAL 1E-8
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struct af_stats {
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long long n_samples;
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double tsquare;
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int max;
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long long histogram[65536];
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};
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static inline int logdb(double v)
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{
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if (v > 1)
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return 0;
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if (v <= MIN_VAL)
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return MAX_DB - 1;
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return log(v) / -0.23025850929940456840179914546843642076;
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}
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static int stats_init(af_instance_t *af, struct af_stats *s, af_data_t *data)
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{
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int i;
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if (!data)
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return AF_ERROR;
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*(af->data) = *data;
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af->data->format = AF_FORMAT_S16_NE;
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af->data->bps = 2;
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s->n_samples = 0;
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s->tsquare = 0;
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s->max = 0;
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for (i = 0; i < 65536; i++)
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s->histogram[i] = 0;
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return af_test_output(af, data);
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}
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static void stats_print(struct af_stats *s)
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{
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int i;
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long long sum;
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float v;
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long long h[MAX_DB];
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s->tsquare /= 32768 * 32768;
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mp_msg(MSGT_AFILTER, MSGL_INFO, "stats: n_samples: %lld\n", s->n_samples);
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if (s->n_samples == 0)
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return;
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mp_msg(MSGT_AFILTER, MSGL_INFO, "stats: mean_volume: -%d dB\n",
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logdb(s->tsquare / s->n_samples));
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mp_msg(MSGT_AFILTER, MSGL_INFO, "stats: max_volume: -%d dB\n",
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logdb(s->max / (32768.0 * 32768.0)));
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for (i = 0; i < MAX_DB; i++)
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h[i] = 0;
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for (i = 0; i < 65536; i++) {
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v = (i - 32768) / 32768.0;
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h[logdb(v * v)] += s->histogram[i];
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}
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for (i = 0; i < MAX_DB; i++)
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if (h[i] != 0)
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break;
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sum = 0;
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for (; i < MAX_DB; i++) {
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sum += h[i];
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mp_msg(MSGT_AFILTER, MSGL_INFO, "stats: histogram_%ddb: %lld\n",
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i, h[i]);
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if (sum > s->n_samples / 1000)
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break;
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}
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}
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static int control(struct af_instance_s *af, int cmd, void *arg)
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{
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struct af_stats *s = af->setup;
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switch(cmd) {
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case AF_CONTROL_REINIT:
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return stats_init(af, s, arg);
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case AF_CONTROL_PRE_DESTROY:
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stats_print(s);
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return AF_OK;
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}
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return AF_UNKNOWN;
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}
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static void uninit(struct af_instance_s *af)
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{
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free(af->data);
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free(af->setup);
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}
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static af_data_t *play(struct af_instance_s *af, af_data_t *data)
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{
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struct af_stats *s = af->setup;
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int16_t *a, *aend;
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int v, v2;
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a = data->audio;
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aend = (int16_t *)((char *)data->audio + data->len);
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s->n_samples += aend - a;
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for (; a < aend; a++) {
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v = *a;
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v2 = v * v;
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s->tsquare += v2;
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s->histogram[v + 32768]++;
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if (v2 > s->max)
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s->max = v2;
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}
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return data;
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}
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static int af_open(af_instance_t *af)
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{
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af->control = control;
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af->uninit = uninit;
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af->play = play;
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af->mul = 1;
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af->data = malloc(sizeof(af_data_t));
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af->setup = malloc(sizeof(struct af_stats));
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if (af->data == NULL || af->setup == NULL)
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return AF_ERROR;
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return AF_OK;
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}
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af_info_t af_info_stats = {
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"Statistics audio filter",
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"stats",
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"Nicolas George",
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"",
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0,
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af_open
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};
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