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- /*
- * 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 "avfilter.h"
- #include "audio.h"
- #include "video.h"
- static int split_init(AVFilterContext *ctx, const char *args, void *opaque)
- {
- 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);
- avfilter_insert_outpad(ctx, i, &pad);
- }
- return 0;
- }
- static void split_uninit(AVFilterContext *ctx)
- {
- int i;
- for (i = 0; i < ctx->output_count; i++)
- av_freep(&ctx->output_pads[i].name);
- }
- static void start_frame(AVFilterLink *inlink, AVFilterBufferRef *picref)
- {
- AVFilterContext *ctx = inlink->dst;
- int i;
- for (i = 0; i < ctx->output_count; i++)
- avfilter_start_frame(ctx->outputs[i],
- avfilter_ref_buffer(picref, ~AV_PERM_WRITE));
- }
- static void draw_slice(AVFilterLink *inlink, int y, int h, int slice_dir)
- {
- AVFilterContext *ctx = inlink->dst;
- int i;
- for (i = 0; i < ctx->output_count; i++)
- avfilter_draw_slice(ctx->outputs[i], y, h, slice_dir);
- }
- static void end_frame(AVFilterLink *inlink)
- {
- AVFilterContext *ctx = inlink->dst;
- int i;
- for (i = 0; i < ctx->output_count; i++)
- avfilter_end_frame(ctx->outputs[i]);
- avfilter_unref_buffer(inlink->cur_buf);
- }
- AVFilter avfilter_vf_split = {
- .name = "split",
- .description = NULL_IF_CONFIG_SMALL("Pass on the input to two outputs."),
- .init = split_init,
- .uninit = split_uninit,
- .inputs = (const AVFilterPad[]) {{ .name = "default",
- .type = AVMEDIA_TYPE_VIDEO,
- .get_video_buffer= ff_null_get_video_buffer,
- .start_frame = start_frame,
- .draw_slice = draw_slice,
- .end_frame = end_frame, },
- { .name = NULL}},
- .outputs = (AVFilterPad[]) {{ .name = NULL}},
- };
- static void filter_samples(AVFilterLink *inlink, AVFilterBufferRef *samplesref)
- {
- AVFilterContext *ctx = inlink->dst;
- int i;
- for (i = 0; i < ctx->output_count; i++)
- ff_filter_samples(inlink->dst->outputs[i],
- avfilter_ref_buffer(samplesref, ~AV_PERM_WRITE));
- }
- 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 = (const AVFilterPad[]) {{ .name = "default",
- .type = AVMEDIA_TYPE_AUDIO,
- .get_audio_buffer = ff_null_get_audio_buffer,
- .filter_samples = filter_samples },
- { .name = NULL }},
- .outputs = (const AVFilterPad[]) {{ .name = NULL }},
- };
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