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FFmpeg/libavfilter/af_dialoguenhance.c
Andreas Rheinhardt 790f793844 avutil/common: Don't auto-include mem.h
There are lots of files that don't need it: The number of object
files that actually need it went down from 2011 to 884 here.

Keep it for external users in order to not cause breakages.

Also improve the other headers a bit while just at it.

Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>
2024-03-31 00:08:43 +01:00

226 lines
7.0 KiB
C

/*
* Copyright (c) 2022 Paul B Mahol
*
* This file is part of FFmpeg.
*
* FFmpeg 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.
*
* FFmpeg 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 FFmpeg; if not, write to the Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
#include "libavutil/channel_layout.h"
#include "libavutil/mem.h"
#include "libavutil/opt.h"
#include "libavutil/tx.h"
#include "audio.h"
#include "avfilter.h"
#include "filters.h"
#include "formats.h"
#include "internal.h"
#include <float.h>
typedef struct AudioDialogueEnhancementContext {
const AVClass *class;
double original, enhance, voice;
int fft_size;
int overlap;
void *window;
float *window_float;
double *window_double;
float prev_vad_float;
double prev_vad_double;
AVFrame *in;
AVFrame *in_frame;
AVFrame *out_dist_frame;
AVFrame *windowed_frame;
AVFrame *windowed_out;
AVFrame *windowed_prev;
AVFrame *center_frame;
int (*de_stereo)(AVFilterContext *ctx, AVFrame *out);
AVTXContext *tx_ctx[2], *itx_ctx;
av_tx_fn tx_fn, itx_fn;
} AudioDialogueEnhanceContext;
#define OFFSET(x) offsetof(AudioDialogueEnhanceContext, x)
#define FLAGS AV_OPT_FLAG_AUDIO_PARAM | AV_OPT_FLAG_FILTERING_PARAM | AV_OPT_FLAG_RUNTIME_PARAM
static const AVOption dialoguenhance_options[] = {
{ "original", "set original center factor", OFFSET(original), AV_OPT_TYPE_DOUBLE, {.dbl=1}, 0, 1, FLAGS },
{ "enhance", "set dialogue enhance factor",OFFSET(enhance), AV_OPT_TYPE_DOUBLE, {.dbl=1}, 0, 3, FLAGS },
{ "voice", "set voice detection factor", OFFSET(voice), AV_OPT_TYPE_DOUBLE, {.dbl=2}, 2,32, FLAGS },
{NULL}
};
AVFILTER_DEFINE_CLASS(dialoguenhance);
static int query_formats(AVFilterContext *ctx)
{
AVFilterFormats *formats = NULL;
AVFilterChannelLayouts *in_layout = NULL, *out_layout = NULL;
int ret;
if ((ret = ff_add_format (&formats, AV_SAMPLE_FMT_FLTP )) < 0 ||
(ret = ff_add_format (&formats, AV_SAMPLE_FMT_DBLP )) < 0 ||
(ret = ff_set_common_formats (ctx , formats )) < 0 ||
(ret = ff_add_channel_layout (&in_layout , &(AVChannelLayout)AV_CHANNEL_LAYOUT_STEREO)) < 0 ||
(ret = ff_channel_layouts_ref(in_layout, &ctx->inputs[0]->outcfg.channel_layouts)) < 0 ||
(ret = ff_add_channel_layout (&out_layout , &(AVChannelLayout)AV_CHANNEL_LAYOUT_SURROUND)) < 0 ||
(ret = ff_channel_layouts_ref(out_layout, &ctx->outputs[0]->incfg.channel_layouts)) < 0)
return ret;
return ff_set_common_all_samplerates(ctx);
}
#define DEPTH 32
#include "dialoguenhance_template.c"
#undef DEPTH
#define DEPTH 64
#include "dialoguenhance_template.c"
static int config_input(AVFilterLink *inlink)
{
AVFilterContext *ctx = inlink->dst;
AudioDialogueEnhanceContext *s = ctx->priv;
int ret;
s->fft_size = inlink->sample_rate > 100000 ? 8192 : inlink->sample_rate > 50000 ? 4096 : 2048;
s->overlap = s->fft_size / 4;
s->in_frame = ff_get_audio_buffer(inlink, (s->fft_size + 2) * 2);
s->center_frame = ff_get_audio_buffer(inlink, (s->fft_size + 2) * 2);
s->out_dist_frame = ff_get_audio_buffer(inlink, (s->fft_size + 2) * 2);
s->windowed_frame = ff_get_audio_buffer(inlink, (s->fft_size + 2) * 2);
s->windowed_out = ff_get_audio_buffer(inlink, (s->fft_size + 2) * 2);
s->windowed_prev = ff_get_audio_buffer(inlink, (s->fft_size + 2) * 2);
if (!s->in_frame || !s->windowed_out || !s->windowed_prev ||
!s->out_dist_frame || !s->windowed_frame || !s->center_frame)
return AVERROR(ENOMEM);
switch (inlink->format) {
case AV_SAMPLE_FMT_FLTP:
s->de_stereo = de_stereo_float;
ret = de_tx_init_float(ctx);
break;
case AV_SAMPLE_FMT_DBLP:
s->de_stereo = de_stereo_double;
ret = de_tx_init_double(ctx);
break;
}
return ret;
}
static int filter_frame(AVFilterLink *inlink, AVFrame *in)
{
AVFilterContext *ctx = inlink->dst;
AVFilterLink *outlink = ctx->outputs[0];
AudioDialogueEnhanceContext *s = ctx->priv;
AVFrame *out;
int ret;
out = ff_get_audio_buffer(outlink, s->overlap);
if (!out) {
ret = AVERROR(ENOMEM);
goto fail;
}
s->in = in;
s->de_stereo(ctx, out);
av_frame_copy_props(out, in);
out->nb_samples = in->nb_samples;
ret = ff_filter_frame(outlink, out);
fail:
av_frame_free(&in);
s->in = NULL;
return ret < 0 ? ret : 0;
}
static int activate(AVFilterContext *ctx)
{
AVFilterLink *inlink = ctx->inputs[0];
AVFilterLink *outlink = ctx->outputs[0];
AudioDialogueEnhanceContext *s = ctx->priv;
AVFrame *in = NULL;
int ret = 0, status;
int64_t pts;
FF_FILTER_FORWARD_STATUS_BACK(outlink, inlink);
ret = ff_inlink_consume_samples(inlink, s->overlap, s->overlap, &in);
if (ret < 0)
return ret;
if (ret > 0) {
return filter_frame(inlink, in);
} else if (ff_inlink_acknowledge_status(inlink, &status, &pts)) {
ff_outlink_set_status(outlink, status, pts);
return 0;
} else {
if (ff_inlink_queued_samples(inlink) >= s->overlap) {
ff_filter_set_ready(ctx, 10);
} else if (ff_outlink_frame_wanted(outlink)) {
ff_inlink_request_frame(inlink);
}
return 0;
}
}
static av_cold void uninit(AVFilterContext *ctx)
{
AudioDialogueEnhanceContext *s = ctx->priv;
av_freep(&s->window);
av_frame_free(&s->in_frame);
av_frame_free(&s->center_frame);
av_frame_free(&s->out_dist_frame);
av_frame_free(&s->windowed_frame);
av_frame_free(&s->windowed_out);
av_frame_free(&s->windowed_prev);
av_tx_uninit(&s->tx_ctx[0]);
av_tx_uninit(&s->tx_ctx[1]);
av_tx_uninit(&s->itx_ctx);
}
static const AVFilterPad inputs[] = {
{
.name = "default",
.type = AVMEDIA_TYPE_AUDIO,
.config_props = config_input,
},
};
const AVFilter ff_af_dialoguenhance = {
.name = "dialoguenhance",
.description = NULL_IF_CONFIG_SMALL("Audio Dialogue Enhancement."),
.priv_size = sizeof(AudioDialogueEnhanceContext),
.priv_class = &dialoguenhance_class,
.uninit = uninit,
FILTER_INPUTS(inputs),
FILTER_OUTPUTS(ff_audio_default_filterpad),
FILTER_QUERY_FUNC(query_formats),
.flags = AVFILTER_FLAG_SUPPORT_TIMELINE_INTERNAL,
.activate = activate,
.process_command = ff_filter_process_command,
};