| /* |
| * 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 "formats.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); |
| if (!pad.name) |
| return AVERROR(ENOMEM); |
| |
| 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]->status) |
| 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, |
| .query_formats = ff_query_formats_all, |
| .inputs = avfilter_af_asplit_inputs, |
| .outputs = NULL, |
| .flags = AVFILTER_FLAG_DYNAMIC_OUTPUTS, |
| }; |