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https://github.com/FFmpeg/FFmpeg.git
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a5e8c41c28
It is not used in any filters currently and is inherently evil. If passing binary data to filters is required in the future, it should be done with some AVOptions-based system.
137 lines
4.0 KiB
C
137 lines
4.0 KiB
C
/*
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* Copyright (c) 2007 Bobby Bingham
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*
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* This file is part of Libav.
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*
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* Libav 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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* Libav 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 Libav; 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 "avfilter.h"
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#include "audio.h"
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#include "internal.h"
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#include "video.h"
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static int split_init(AVFilterContext *ctx, const char *args)
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{
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int i, nb_outputs = 2;
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if (args) {
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nb_outputs = strtol(args, NULL, 0);
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if (nb_outputs <= 0) {
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av_log(ctx, AV_LOG_ERROR, "Invalid number of outputs specified: %d.\n",
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nb_outputs);
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return AVERROR(EINVAL);
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}
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}
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for (i = 0; i < nb_outputs; i++) {
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char name[32];
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AVFilterPad pad = { 0 };
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snprintf(name, sizeof(name), "output%d", i);
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pad.type = ctx->filter->inputs[0].type;
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pad.name = av_strdup(name);
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ff_insert_outpad(ctx, i, &pad);
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}
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return 0;
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}
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static 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 void start_frame(AVFilterLink *inlink, AVFilterBufferRef *picref)
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{
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AVFilterContext *ctx = inlink->dst;
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int i;
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for (i = 0; i < ctx->nb_outputs; i++)
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ff_start_frame(ctx->outputs[i],
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avfilter_ref_buffer(picref, ~AV_PERM_WRITE));
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}
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static void draw_slice(AVFilterLink *inlink, int y, int h, int slice_dir)
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{
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AVFilterContext *ctx = inlink->dst;
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int i;
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for (i = 0; i < ctx->nb_outputs; i++)
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ff_draw_slice(ctx->outputs[i], y, h, slice_dir);
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}
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static void end_frame(AVFilterLink *inlink)
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{
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AVFilterContext *ctx = inlink->dst;
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int i;
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for (i = 0; i < ctx->nb_outputs; i++)
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ff_end_frame(ctx->outputs[i]);
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avfilter_unref_buffer(inlink->cur_buf);
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}
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AVFilter avfilter_vf_split = {
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.name = "split",
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.description = NULL_IF_CONFIG_SMALL("Pass on the input to two outputs."),
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.init = split_init,
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.uninit = split_uninit,
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.inputs = (AVFilterPad[]) {{ .name = "default",
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.type = AVMEDIA_TYPE_VIDEO,
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.get_video_buffer= ff_null_get_video_buffer,
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.start_frame = start_frame,
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.draw_slice = draw_slice,
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.end_frame = end_frame, },
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{ .name = NULL}},
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.outputs = (AVFilterPad[]) {{ .name = NULL}},
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};
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static void filter_samples(AVFilterLink *inlink, AVFilterBufferRef *samplesref)
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{
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AVFilterContext *ctx = inlink->dst;
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int i;
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for (i = 0; i < ctx->nb_outputs; i++)
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ff_filter_samples(inlink->dst->outputs[i],
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avfilter_ref_buffer(samplesref, ~AV_PERM_WRITE));
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}
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AVFilter avfilter_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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.init = split_init,
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.uninit = split_uninit,
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.inputs = (const AVFilterPad[]) {{ .name = "default",
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.type = AVMEDIA_TYPE_AUDIO,
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.get_audio_buffer = ff_null_get_audio_buffer,
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.filter_samples = filter_samples },
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{ .name = NULL }},
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.outputs = (const AVFilterPad[]) {{ .name = NULL }},
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};
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