/* * 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 <stdio.h> #include "libavutil/attributes.h" #include "libavutil/internal.h" #include "libavutil/mem.h" #include "libavutil/opt.h" #include "avfilter.h" #include "audio.h" #include "internal.h" #include "video.h" typedef struct SplitContext { const AVClass *class; int nb_outputs; } SplitContext; static av_cold int split_init(AVFilterContext *ctx) { SplitContext *s = ctx->priv; int i; for (i = 0; i < s->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 av_cold void split_uninit(AVFilterContext *ctx) { int i; for (i = 0; i < ctx->nb_outputs; i++) av_freep(&ctx->output_pads[i].name); } static int filter_frame(AVFilterLink *inlink, AVFrame *frame) { AVFilterContext *ctx = inlink->dst; int i, ret = AVERROR_EOF; for (i = 0; i < ctx->nb_outputs; i++) { AVFrame *buf_out; if (ctx->outputs[i]->closed) continue; buf_out = av_frame_clone(frame); if (!buf_out) { ret = AVERROR(ENOMEM); break; } ret = ff_filter_frame(ctx->outputs[i], buf_out); if (ret < 0) break; } av_frame_free(&frame); return ret; } #define OFFSET(x) offsetof(SplitContext, x) #define FLAGS AV_OPT_FLAG_AUDIO_PARAM | AV_OPT_FLAG_VIDEO_PARAM static const AVOption options[] = { { "outputs", "set number of outputs", OFFSET(nb_outputs), AV_OPT_TYPE_INT, { .i64 = 2 }, 1, INT_MAX, FLAGS }, { NULL } }; #define split_options options AVFILTER_DEFINE_CLASS(split); #define asplit_options options AVFILTER_DEFINE_CLASS(asplit); static const AVFilterPad avfilter_vf_split_inputs[] = { { .name = "default", .type = AVMEDIA_TYPE_VIDEO, .filter_frame = filter_frame, }, { NULL } }; AVFilter ff_vf_split = { .name = "split", .description = NULL_IF_CONFIG_SMALL("Pass on the input to N video outputs."), .priv_size = sizeof(SplitContext), .priv_class = &split_class, .init = split_init, .uninit = split_uninit, .inputs = avfilter_vf_split_inputs, .outputs = NULL, .flags = AVFILTER_FLAG_DYNAMIC_OUTPUTS, }; static const AVFilterPad avfilter_af_asplit_inputs[] = { { .name = "default", .type = AVMEDIA_TYPE_AUDIO, .filter_frame = filter_frame, }, { NULL } }; AVFilter ff_af_asplit = { .name = "asplit", .description = NULL_IF_CONFIG_SMALL("Pass on the audio input to N audio outputs."), .priv_size = sizeof(SplitContext), .priv_class = &asplit_class, .init = split_init, .uninit = split_uninit, .inputs = avfilter_af_asplit_inputs, .outputs = NULL, .flags = AVFILTER_FLAG_DYNAMIC_OUTPUTS, };