/* * 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/internal.h" #include "libavutil/mem.h" #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 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; } static const AVFilterPad avfilter_vf_split_inputs[] = { { .name = "default", .type = AVMEDIA_TYPE_VIDEO, .get_video_buffer = ff_null_get_video_buffer, .filter_frame = filter_frame, }, { NULL } }; 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 = avfilter_vf_split_inputs, .outputs = NULL, }; static const AVFilterPad avfilter_af_asplit_inputs[] = { { .name = "default", .type = AVMEDIA_TYPE_AUDIO, .get_audio_buffer = ff_null_get_audio_buffer, .filter_frame = filter_frame, }, { NULL } }; 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 = avfilter_af_asplit_inputs, .outputs = NULL, };