MrBesen/ffmpeg
1
0
Fork 0
Code Issues Pull Requests Releases Wiki Activity

avfilter/af_sidechaincompress: switch to activate

Browse Source
This commit is contained in:
Paul B Mahol 2017-08-24 20:34:35 +02:00
parent f8d0689d3f
commit f0f48884b0
1 changed files with 61 additions and 57 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

118
libavfilter/af_sidechaincompress.c
View File

@ -32,6 +32,7 @@
#include "audio.h"
#include "avfilter.h"
#include "filters.h"
#include "formats.h"
#include "hermite.h"
#include "internal.h"
@ -183,71 +184,76 @@ static void compressor(SidechainCompressContext *s,
}
#if CONFIG_SIDECHAINCOMPRESS_FILTER
static int filter_frame(AVFilterLink *link, AVFrame *frame)
static int activate(AVFilterContext *ctx)
{
AVFilterContext *ctx = link->dst;
SidechainCompressContext *s = ctx->priv;
AVFilterLink *outlink = ctx->outputs[0];
AVFrame *out = NULL, *in[2] = { NULL };
int ret, i, status, nb_samples;
double *dst;
int nb_samples;
int i;
int64_t pts;
for (i = 0; i < 2; i++)
if (link == ctx->inputs[i])
break;
av_assert0(i < 2);
av_audio_fifo_write(s->fifo[i], (void **)frame->extended_data,
frame->nb_samples);
av_frame_free(&frame);
if ((ret = ff_inlink_consume_frame(ctx->inputs[0], &in[0])) > 0) {
av_audio_fifo_write(s->fifo[0], (void **)in[0]->extended_data,
in[0]->nb_samples);
av_frame_free(&in[0]);
}
if (ret < 0)
return ret;
if ((ret = ff_inlink_consume_frame(ctx->inputs[1], &in[1])) > 0) {
av_audio_fifo_write(s->fifo[1], (void **)in[1]->extended_data,
in[1]->nb_samples);
av_frame_free(&in[1]);
}
if (ret < 0)
return ret;
nb_samples = FFMIN(av_audio_fifo_size(s->fifo[0]), av_audio_fifo_size(s->fifo[1]));
if (!nb_samples)
return 0;
out = ff_get_audio_buffer(outlink, nb_samples);
if (!out)
return AVERROR(ENOMEM);
for (i = 0; i < 2; i++) {
in[i] = ff_get_audio_buffer(ctx->inputs[i], nb_samples);
if (!in[i]) {
av_frame_free(&in[0]);
av_frame_free(&in[1]);
av_frame_free(&out);
if (nb_samples) {
out = ff_get_audio_buffer(ctx->outputs[0], nb_samples);
if (!out)
return AVERROR(ENOMEM);
for (i = 0; i < 2; i++) {
in[i] = ff_get_audio_buffer(ctx->inputs[i], nb_samples);
if (!in[i]) {
av_frame_free(&in[0]);
av_frame_free(&in[1]);
av_frame_free(&out);
return AVERROR(ENOMEM);
}
av_audio_fifo_read(s->fifo[i], (void **)in[i]->data, nb_samples);
}
av_audio_fifo_read(s->fifo[i], (void **)in[i]->data, nb_samples);
dst = (double *)out->data[0];
out->pts = s->pts;
s->pts += nb_samples;
compressor(s, (double *)in[0]->data[0], dst,
(double *)in[1]->data[0], nb_samples,
s->level_in, s->level_sc,
ctx->inputs[0], ctx->inputs[1]);
av_frame_free(&in[0]);
av_frame_free(&in[1]);
ret = ff_filter_frame(ctx->outputs[0], out);
if (ret < 0)
return ret;
}
dst = (double *)out->data[0];
out->pts = s->pts;
s->pts += nb_samples;
compressor(s, (double *)in[0]->data[0], dst,
(double *)in[1]->data[0], nb_samples,
s->level_in, s->level_sc,
ctx->inputs[0], ctx->inputs[1]);
av_frame_free(&in[0]);
av_frame_free(&in[1]);
return ff_filter_frame(outlink, out);
}
static int request_frame(AVFilterLink *outlink)
{
AVFilterContext *ctx = outlink->src;
SidechainCompressContext *s = ctx->priv;
int i;
/* get a frame on each input */
for (i = 0; i < 2; i++) {
AVFilterLink *inlink = ctx->inputs[i];
if (!av_audio_fifo_size(s->fifo[i]))
return ff_request_frame(inlink);
if (ff_inlink_acknowledge_status(ctx->inputs[0], &status, &pts)) {
ff_outlink_set_status(ctx->outputs[0], status, pts);
return 0;
} else if (ff_inlink_acknowledge_status(ctx->inputs[1], &status, &pts)) {
ff_outlink_set_status(ctx->outputs[0], status, pts);
return 0;
} else {
if (ff_outlink_frame_wanted(ctx->outputs[0])) {
if (!av_audio_fifo_size(s->fifo[0]))
ff_inlink_request_frame(ctx->inputs[0]);
if (!av_audio_fifo_size(s->fifo[1]))
ff_inlink_request_frame(ctx->inputs[1]);
}
return 0;
}
return 0;
}
static int query_formats(AVFilterContext *ctx)
@ -325,11 +331,9 @@ static const AVFilterPad sidechaincompress_inputs[] = {
{
.name = "main",
.type = AVMEDIA_TYPE_AUDIO,
.filter_frame = filter_frame,
},{
.name = "sidechain",
.type = AVMEDIA_TYPE_AUDIO,
.filter_frame = filter_frame,
},
{ NULL }
};
@ -339,7 +343,6 @@ static const AVFilterPad sidechaincompress_outputs[] = {
.name = "default",
.type = AVMEDIA_TYPE_AUDIO,
.config_props = config_output,
.request_frame = request_frame,
},
{ NULL }
};
@ -350,6 +353,7 @@ AVFilter ff_af_sidechaincompress = {
.priv_size = sizeof(SidechainCompressContext),
.priv_class = &sidechaincompress_class,
.query_formats = query_formats,
.activate = activate,
.uninit = uninit,
.inputs = sidechaincompress_inputs,
.outputs = sidechaincompress_outputs,