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/*
* This file is part of mpv.
*
* mpv 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.
*
* mpv 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 mpv. If not, see <http://www.gnu.org/licenses/>.
*/
#include "af.h"
struct priv {
double speed;
};
static int control(struct af_instance *af, int cmd, void *arg)
{
struct priv *priv = af->priv;
switch (cmd) {
case AF_CONTROL_REINIT: {
struct mp_audio *in = arg;
struct mp_audio orig_in = *in;
struct mp_audio *out = af->data;
mp_audio_copy_config(out, in);
out->rate = in->rate * priv->speed;
return mp_audio_config_equals(in, &orig_in) ? AF_OK : AF_FALSE;
}
case AF_CONTROL_SET_PLAYBACK_SPEED_RESAMPLE: {
priv->speed = *(double *)arg;
return AF_OK;
}
}
return AF_UNKNOWN;
}
static int filter(struct af_instance *af, struct mp_audio *data)
{
if (data)
mp_audio_copy_config(data, af->data);
af_add_output_frame(af, data);
return 0;
}
static int af_open(struct af_instance *af)
{
struct priv *priv = af->priv;
af->control = control;
af->filter_frame = filter;
priv->speed = 1.0;
return AF_OK;
}
#define OPT_BASE_STRUCT struct priv
const struct af_info af_info_forcespeed = {
.info = "Force audio speed",
.name = "forcespeed",
.open = af_open,
.priv_size = sizeof(struct priv),
};
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