GCC Code Coverage Report
Directory: ../../../ffmpeg/ Exec Total Coverage
File: src/libavfilter/split.c Lines: 24 31 77.4 %
Date: 2020-09-25 23:16:12 Branches: 11 16 68.8 %

Line Branch Exec Source
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/*
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 * Copyright (c) 2007 Bobby Bingham
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 *
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 * This file is part of FFmpeg.
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 *
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 * FFmpeg is free software; you can redistribute it and/or
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 * modify it under the terms of the GNU Lesser General Public
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 * License as published by the Free Software Foundation; either
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 * version 2.1 of the License, or (at your option) any later version.
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 *
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 * FFmpeg 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 GNU
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 * Lesser General Public License for more details.
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 *
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 * You should have received a copy of the GNU Lesser General Public
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 * License along with FFmpeg; if not, write to the Free Software
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 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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 */
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/**
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 * @file
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 * audio and video splitter
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 */
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#include <stdio.h>
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#include "libavutil/attributes.h"
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#include "libavutil/avstring.h"
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#include "libavutil/internal.h"
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#include "libavutil/mem.h"
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#include "libavutil/opt.h"
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#include "avfilter.h"
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#include "audio.h"
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#include "filters.h"
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#include "formats.h"
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#include "internal.h"
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#include "video.h"
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typedef struct SplitContext {
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    const AVClass *class;
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    int nb_outputs;
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} SplitContext;
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static av_cold int split_init(AVFilterContext *ctx)
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{
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    SplitContext *s = ctx->priv;
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    int i, ret;
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    for (i = 0; i < s->nb_outputs; i++) {
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        AVFilterPad pad = { 0 };
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        pad.type = ctx->filter->inputs[0].type;
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        pad.name = av_asprintf("output%d", i);
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        if (!pad.name)
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            return AVERROR(ENOMEM);
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        if ((ret = ff_insert_outpad(ctx, i, &pad)) < 0) {
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            av_freep(&pad.name);
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            return ret;
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        }
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    }
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    return 0;
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}
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static av_cold void split_uninit(AVFilterContext *ctx)
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{
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    int i;
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    for (i = 0; i < ctx->nb_outputs; i++)
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        av_freep(&ctx->output_pads[i].name);
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}
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static int filter_frame(AVFilterLink *inlink, AVFrame *frame)
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{
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    AVFilterContext *ctx = inlink->dst;
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    int i, ret = AVERROR_EOF;
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    for (i = 0; i < ctx->nb_outputs; i++) {
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        AVFrame *buf_out;
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        if (ff_outlink_get_status(ctx->outputs[i]))
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            continue;
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        buf_out = av_frame_clone(frame);
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        if (!buf_out) {
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            ret = AVERROR(ENOMEM);
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            break;
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        }
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        ret = ff_filter_frame(ctx->outputs[i], buf_out);
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        if (ret < 0)
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            break;
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    }
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    av_frame_free(&frame);
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    return ret;
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}
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#define OFFSET(x) offsetof(SplitContext, x)
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#define FLAGS (AV_OPT_FLAG_AUDIO_PARAM | AV_OPT_FLAG_VIDEO_PARAM | AV_OPT_FLAG_FILTERING_PARAM)
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static const AVOption options[] = {
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    { "outputs", "set number of outputs", OFFSET(nb_outputs), AV_OPT_TYPE_INT, { .i64 = 2 }, 1, INT_MAX, FLAGS },
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    { NULL }
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};
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#define split_options options
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AVFILTER_DEFINE_CLASS(split);
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#define asplit_options options
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AVFILTER_DEFINE_CLASS(asplit);
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static const AVFilterPad avfilter_vf_split_inputs[] = {
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    {
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        .name         = "default",
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        .type         = AVMEDIA_TYPE_VIDEO,
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        .filter_frame = filter_frame,
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    },
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    { NULL }
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};
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AVFilter ff_vf_split = {
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    .name        = "split",
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    .description = NULL_IF_CONFIG_SMALL("Pass on the input to N video outputs."),
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    .priv_size   = sizeof(SplitContext),
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    .priv_class  = &split_class,
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    .init        = split_init,
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    .uninit      = split_uninit,
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    .inputs      = avfilter_vf_split_inputs,
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    .outputs     = NULL,
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    .flags       = AVFILTER_FLAG_DYNAMIC_OUTPUTS,
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};
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static const AVFilterPad avfilter_af_asplit_inputs[] = {
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    {
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        .name         = "default",
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        .type         = AVMEDIA_TYPE_AUDIO,
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        .filter_frame = filter_frame,
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    },
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    { NULL }
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};
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AVFilter ff_af_asplit = {
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    .name        = "asplit",
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    .description = NULL_IF_CONFIG_SMALL("Pass on the audio input to N audio outputs."),
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    .priv_size   = sizeof(SplitContext),
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    .priv_class  = &asplit_class,
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    .init        = split_init,
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    .uninit      = split_uninit,
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    .inputs      = avfilter_af_asplit_inputs,
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    .outputs     = NULL,
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    .flags       = AVFILTER_FLAG_DYNAMIC_OUTPUTS,
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};