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715c8a5a50
* qatar/master: (28 commits) dfa: use more meaningful return codes eatgv: check vector_bits eatgv: check motion vectors Mark a number of variables only used in av_dlog() calls as av_unused. dvdec: drop const qualifier from variable to eliminate a warning avcodec: Improve comment for thread_safe_callbacks to avoid misinterpretation. tests/utils: don't ignore the return value of fwrite() lavfi/formats: use sizeof(var) instead of sizeof(type). lavfi: remove avfilter_default_config_input_link() declaration lavfi: always enable the scale filter and depend on sws. vf_split: support user-specifiable number of outputs. avconv: remove stray useless comment. mpegmux: add stuffing to avoid incomplete PCM frames rtsp: avoid const warnings from strtol() call avserver: check return value of ftruncate() lagarith: make offset array type unsigned dfa: add some checks to ensure that decoder won't write past frame end aacps: NEON optimisations aacps: align some arrays aacps: move some loops to function pointers ... Conflicts: configure doc/filters.texi libavcodec/dfa.c libavcodec/eatgv.c libavfilter/Makefile libavfilter/allfilters.c libavfilter/avfilter.h libavfilter/formats.c libavfilter/vf_split.c Merged-by: Michael Niedermayer <michaelni@gmx.at>
109 lines
3.1 KiB
C
109 lines
3.1 KiB
C
/*
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* Copyright (c) 2007 Bobby Bingham
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*
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* This file is part of FFmpeg.
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*
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* FFmpeg 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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* FFmpeg 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 FFmpeg; 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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* Video splitter
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*/
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#include "avfilter.h"
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static int split_init(AVFilterContext *ctx, const char *args, void *opaque)
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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 = AVMEDIA_TYPE_VIDEO;
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pad.name = av_strdup(name);
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avfilter_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->output_count; 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->output_count; i++)
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avfilter_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->output_count; i++)
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avfilter_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->output_count; i++)
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avfilter_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 = (const AVFilterPad[]) {{ .name = "default",
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.type = AVMEDIA_TYPE_VIDEO,
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.get_video_buffer= avfilter_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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