mirror of https://git.ffmpeg.org/ffmpeg.git
140 lines
4.1 KiB
C
140 lines
4.1 KiB
C
/*
|
|
* Copyright (c) 2007 Bobby Bingham
|
|
*
|
|
* 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
|
|
*/
|
|
|
|
/**
|
|
* @file
|
|
* audio and video splitter
|
|
*/
|
|
|
|
#include "avfilter.h"
|
|
#include "audio.h"
|
|
#include "internal.h"
|
|
#include "video.h"
|
|
|
|
static int split_init(AVFilterContext *ctx, const char *args)
|
|
{
|
|
int i, nb_outputs = 2;
|
|
|
|
if (args) {
|
|
nb_outputs = strtol(args, NULL, 0);
|
|
if (nb_outputs <= 0) {
|
|
av_log(ctx, AV_LOG_ERROR, "Invalid number of outputs specified: %d.\n",
|
|
nb_outputs);
|
|
return AVERROR(EINVAL);
|
|
}
|
|
}
|
|
|
|
for (i = 0; i < nb_outputs; i++) {
|
|
char name[32];
|
|
AVFilterPad pad = { 0 };
|
|
|
|
snprintf(name, sizeof(name), "output%d", i);
|
|
pad.type = ctx->filter->inputs[0].type;
|
|
pad.name = av_strdup(name);
|
|
|
|
ff_insert_outpad(ctx, i, &pad);
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static void split_uninit(AVFilterContext *ctx)
|
|
{
|
|
int i;
|
|
|
|
for (i = 0; i < ctx->nb_outputs; i++)
|
|
av_freep(&ctx->output_pads[i].name);
|
|
}
|
|
|
|
static void start_frame(AVFilterLink *inlink, AVFilterBufferRef *picref)
|
|
{
|
|
AVFilterContext *ctx = inlink->dst;
|
|
int i;
|
|
|
|
for (i = 0; i < ctx->nb_outputs; i++)
|
|
ff_start_frame(ctx->outputs[i],
|
|
avfilter_ref_buffer(picref, ~AV_PERM_WRITE));
|
|
}
|
|
|
|
static void draw_slice(AVFilterLink *inlink, int y, int h, int slice_dir)
|
|
{
|
|
AVFilterContext *ctx = inlink->dst;
|
|
int i;
|
|
|
|
for (i = 0; i < ctx->nb_outputs; i++)
|
|
ff_draw_slice(ctx->outputs[i], y, h, slice_dir);
|
|
}
|
|
|
|
static void end_frame(AVFilterLink *inlink)
|
|
{
|
|
AVFilterContext *ctx = inlink->dst;
|
|
int i;
|
|
|
|
for (i = 0; i < ctx->nb_outputs; i++)
|
|
ff_end_frame(ctx->outputs[i]);
|
|
}
|
|
|
|
AVFilter avfilter_vf_split = {
|
|
.name = "split",
|
|
.description = NULL_IF_CONFIG_SMALL("Pass on the input video to N outputs."),
|
|
|
|
.init = split_init,
|
|
.uninit = split_uninit,
|
|
|
|
.inputs = (const AVFilterPad[]) {{ .name = "default",
|
|
.type = AVMEDIA_TYPE_VIDEO,
|
|
.get_video_buffer= ff_null_get_video_buffer,
|
|
.start_frame = start_frame,
|
|
.draw_slice = draw_slice,
|
|
.end_frame = end_frame, },
|
|
{ .name = NULL}},
|
|
.outputs = (AVFilterPad[]) {{ .name = NULL}},
|
|
};
|
|
|
|
static int filter_samples(AVFilterLink *inlink, AVFilterBufferRef *samplesref)
|
|
{
|
|
AVFilterContext *ctx = inlink->dst;
|
|
int i, ret = 0;
|
|
|
|
for (i = 0; i < ctx->nb_outputs; i++) {
|
|
ret = ff_filter_samples(inlink->dst->outputs[i],
|
|
avfilter_ref_buffer(samplesref, ~AV_PERM_WRITE));
|
|
if (ret < 0)
|
|
break;
|
|
}
|
|
avfilter_unref_buffer(samplesref);
|
|
return ret;
|
|
}
|
|
|
|
AVFilter avfilter_af_asplit = {
|
|
.name = "asplit",
|
|
.description = NULL_IF_CONFIG_SMALL("Pass on the audio input to N audio outputs."),
|
|
|
|
.init = split_init,
|
|
.uninit = split_uninit,
|
|
|
|
.inputs = (const AVFilterPad[]) {{ .name = "default",
|
|
.type = AVMEDIA_TYPE_AUDIO,
|
|
.get_audio_buffer = ff_null_get_audio_buffer,
|
|
.filter_samples = filter_samples },
|
|
{ .name = NULL }},
|
|
.outputs = (const AVFilterPad[]) {{ .name = NULL }},
|
|
};
|