2011-06-11 13:40:08 +00:00
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/*
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* Copyright (c) 2011 Stefano Sabatini
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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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* libavfilter virtual input device
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*/
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/* #define DEBUG */
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2012-12-06 14:09:47 +00:00
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#include <float.h> /* DBL_MIN, DBL_MAX */
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2011-06-11 13:40:08 +00:00
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2012-10-16 21:49:03 +00:00
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#include "libavutil/bprint.h"
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2012-11-13 13:16:48 +00:00
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#include "libavutil/channel_layout.h"
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2012-10-22 23:13:23 +00:00
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#include "libavutil/file.h"
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2011-06-11 13:40:08 +00:00
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#include "libavutil/log.h"
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#include "libavutil/mem.h"
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#include "libavutil/opt.h"
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#include "libavutil/parseutils.h"
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#include "libavutil/pixdesc.h"
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#include "libavfilter/avfilter.h"
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#include "libavfilter/avfiltergraph.h"
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2011-09-06 16:37:44 +00:00
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#include "libavfilter/buffersink.h"
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2011-12-02 23:45:46 +00:00
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#include "libavformat/internal.h"
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2011-06-11 13:40:08 +00:00
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#include "avdevice.h"
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typedef struct {
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AVClass *class; ///< class for private options
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char *graph_str;
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2012-10-22 23:13:23 +00:00
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char *graph_filename;
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2012-01-19 18:38:11 +00:00
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char *dump_graph;
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2011-06-11 13:40:08 +00:00
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AVFilterGraph *graph;
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AVFilterContext **sinks;
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int *sink_stream_map;
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2012-09-20 09:41:11 +00:00
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int *sink_eof;
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2011-06-11 13:40:08 +00:00
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int *stream_sink_map;
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2013-03-12 13:21:27 +00:00
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AVFrame *decoded_frame;
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2011-06-11 13:40:08 +00:00
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} LavfiContext;
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static int *create_all_formats(int n)
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{
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int i, j, *fmts, count = 0;
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2012-10-12 15:56:34 +00:00
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for (i = 0; i < n; i++) {
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const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(i);
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2013-05-15 09:23:14 +00:00
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if (!(desc->flags & AV_PIX_FMT_FLAG_HWACCEL))
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2011-06-11 13:40:08 +00:00
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count++;
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2012-10-12 15:56:34 +00:00
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}
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2011-06-11 13:40:08 +00:00
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if (!(fmts = av_malloc((count+1) * sizeof(int))))
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return NULL;
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for (j = 0, i = 0; i < n; i++) {
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2012-10-12 15:56:34 +00:00
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const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(i);
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2013-05-15 09:23:14 +00:00
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if (!(desc->flags & AV_PIX_FMT_FLAG_HWACCEL))
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2011-06-11 13:40:08 +00:00
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fmts[j++] = i;
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}
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fmts[j] = -1;
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return fmts;
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}
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av_cold static int lavfi_read_close(AVFormatContext *avctx)
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{
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LavfiContext *lavfi = avctx->priv_data;
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av_freep(&lavfi->sink_stream_map);
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2012-09-20 09:41:11 +00:00
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av_freep(&lavfi->sink_eof);
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2011-06-11 13:40:08 +00:00
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av_freep(&lavfi->stream_sink_map);
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2011-12-15 18:51:38 +00:00
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av_freep(&lavfi->sinks);
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2011-06-11 13:40:08 +00:00
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avfilter_graph_free(&lavfi->graph);
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2013-03-12 13:21:27 +00:00
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av_frame_free(&lavfi->decoded_frame);
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2011-06-11 13:40:08 +00:00
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return 0;
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}
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2012-01-28 03:23:26 +00:00
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av_cold static int lavfi_read_header(AVFormatContext *avctx)
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2011-06-11 13:40:08 +00:00
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{
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LavfiContext *lavfi = avctx->priv_data;
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AVFilterInOut *input_links = NULL, *output_links = NULL, *inout;
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2011-08-18 13:39:24 +00:00
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AVFilter *buffersink, *abuffersink;
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2012-10-08 18:54:00 +00:00
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int *pix_fmts = create_all_formats(AV_PIX_FMT_NB);
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2011-08-18 13:39:24 +00:00
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enum AVMediaType type;
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2011-06-11 13:40:08 +00:00
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int ret = 0, i, n;
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#define FAIL(ERR) { ret = ERR; goto end; }
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2011-12-20 12:17:03 +00:00
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if (!pix_fmts)
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FAIL(AVERROR(ENOMEM));
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2011-06-11 13:40:08 +00:00
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avfilter_register_all();
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2013-03-11 20:49:04 +00:00
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buffersink = avfilter_get_by_name("buffersink");
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abuffersink = avfilter_get_by_name("abuffersink");
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2011-06-11 13:40:08 +00:00
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2012-10-22 23:13:23 +00:00
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if (lavfi->graph_filename && lavfi->graph_str) {
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av_log(avctx, AV_LOG_ERROR,
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"Only one of the graph or graph_file options must be specified\n");
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2012-10-25 19:33:45 +00:00
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FAIL(AVERROR(EINVAL));
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2012-10-22 23:13:23 +00:00
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}
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if (lavfi->graph_filename) {
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uint8_t *file_buf, *graph_buf;
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size_t file_bufsize;
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ret = av_file_map(lavfi->graph_filename,
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&file_buf, &file_bufsize, 0, avctx);
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if (ret < 0)
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2012-10-25 19:33:45 +00:00
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goto end;
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2012-10-22 23:13:23 +00:00
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/* create a 0-terminated string based on the read file */
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graph_buf = av_malloc(file_bufsize + 1);
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if (!graph_buf) {
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av_file_unmap(file_buf, file_bufsize);
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2012-10-25 19:33:45 +00:00
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FAIL(AVERROR(ENOMEM));
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2012-10-22 23:13:23 +00:00
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}
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memcpy(graph_buf, file_buf, file_bufsize);
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graph_buf[file_bufsize] = 0;
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av_file_unmap(file_buf, file_bufsize);
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lavfi->graph_str = graph_buf;
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}
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2011-06-11 13:40:08 +00:00
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if (!lavfi->graph_str)
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lavfi->graph_str = av_strdup(avctx->filename);
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/* parse the graph, create a stream for each open output */
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if (!(lavfi->graph = avfilter_graph_alloc()))
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FAIL(AVERROR(ENOMEM));
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2013-07-01 23:39:14 +00:00
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if ((ret = avfilter_graph_parse_ptr(lavfi->graph, lavfi->graph_str,
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2011-06-11 13:40:08 +00:00
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&input_links, &output_links, avctx)) < 0)
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FAIL(ret);
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if (input_links) {
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av_log(avctx, AV_LOG_ERROR,
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"Open inputs in the filtergraph are not acceptable\n");
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FAIL(AVERROR(EINVAL));
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}
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/* count the outputs */
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for (n = 0, inout = output_links; inout; n++, inout = inout->next);
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if (!(lavfi->sink_stream_map = av_malloc(sizeof(int) * n)))
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FAIL(AVERROR(ENOMEM));
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2012-09-20 09:41:11 +00:00
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if (!(lavfi->sink_eof = av_mallocz(sizeof(int) * n)))
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FAIL(AVERROR(ENOMEM));
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2011-06-11 13:40:08 +00:00
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if (!(lavfi->stream_sink_map = av_malloc(sizeof(int) * n)))
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FAIL(AVERROR(ENOMEM));
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for (i = 0; i < n; i++)
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lavfi->stream_sink_map[i] = -1;
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/* parse the output link names - they need to be of the form out0, out1, ...
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* create a mapping between them and the streams */
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for (i = 0, inout = output_links; inout; i++, inout = inout->next) {
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int stream_idx;
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if (!strcmp(inout->name, "out"))
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stream_idx = 0;
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else if (sscanf(inout->name, "out%d\n", &stream_idx) != 1) {
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av_log(avctx, AV_LOG_ERROR,
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"Invalid outpad name '%s'\n", inout->name);
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FAIL(AVERROR(EINVAL));
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}
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if ((unsigned)stream_idx >= n) {
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av_log(avctx, AV_LOG_ERROR,
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"Invalid index was specified in output '%s', "
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"must be a non-negative value < %d\n",
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inout->name, n);
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FAIL(AVERROR(EINVAL));
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}
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2011-12-18 00:04:02 +00:00
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/* is an audio or video output? */
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2011-08-18 13:39:24 +00:00
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type = inout->filter_ctx->output_pads[inout->pad_idx].type;
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if (type != AVMEDIA_TYPE_VIDEO && type != AVMEDIA_TYPE_AUDIO) {
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2011-06-11 13:40:08 +00:00
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av_log(avctx, AV_LOG_ERROR,
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2011-08-18 13:39:24 +00:00
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"Output '%s' is not a video or audio output, not yet supported\n", inout->name);
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2011-06-11 13:40:08 +00:00
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FAIL(AVERROR(EINVAL));
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}
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if (lavfi->stream_sink_map[stream_idx] != -1) {
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av_log(avctx, AV_LOG_ERROR,
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2011-12-18 00:03:40 +00:00
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"An output with stream index %d was already specified\n",
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2011-06-11 13:40:08 +00:00
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stream_idx);
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FAIL(AVERROR(EINVAL));
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}
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lavfi->sink_stream_map[i] = stream_idx;
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lavfi->stream_sink_map[stream_idx] = i;
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}
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/* for each open output create a corresponding stream */
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for (i = 0, inout = output_links; inout; i++, inout = inout->next) {
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AVStream *st;
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2011-11-05 12:11:18 +00:00
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if (!(st = avformat_new_stream(avctx, NULL)))
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2011-06-11 13:40:08 +00:00
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FAIL(AVERROR(ENOMEM));
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2011-11-05 12:11:18 +00:00
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st->id = i;
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2011-06-11 13:40:08 +00:00
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}
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/* create a sink for each output and connect them to the graph */
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2014-06-07 13:04:50 +00:00
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lavfi->sinks = av_malloc_array(avctx->nb_streams, sizeof(AVFilterContext *));
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2011-06-11 13:40:08 +00:00
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if (!lavfi->sinks)
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FAIL(AVERROR(ENOMEM));
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for (i = 0, inout = output_links; inout; i++, inout = inout->next) {
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AVFilterContext *sink;
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2011-08-18 13:39:24 +00:00
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type = inout->filter_ctx->output_pads[inout->pad_idx].type;
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if (type == AVMEDIA_TYPE_VIDEO && ! buffersink ||
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type == AVMEDIA_TYPE_AUDIO && ! abuffersink) {
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av_log(avctx, AV_LOG_ERROR, "Missing required buffersink filter, aborting.\n");
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FAIL(AVERROR_FILTER_NOT_FOUND);
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}
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if (type == AVMEDIA_TYPE_VIDEO) {
|
2011-12-20 12:18:48 +00:00
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ret = avfilter_graph_create_filter(&sink, buffersink,
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inout->name, NULL,
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2013-04-12 11:47:40 +00:00
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NULL, lavfi->graph);
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2013-04-12 18:34:35 +00:00
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if (ret >= 0)
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ret = av_opt_set_int_list(sink, "pix_fmts", pix_fmts, AV_PIX_FMT_NONE, AV_OPT_SEARCH_CHILDREN);
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2011-12-20 12:18:48 +00:00
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if (ret < 0)
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goto end;
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2011-08-18 13:39:24 +00:00
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} else if (type == AVMEDIA_TYPE_AUDIO) {
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2012-02-16 14:00:18 +00:00
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enum AVSampleFormat sample_fmts[] = { AV_SAMPLE_FMT_U8,
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AV_SAMPLE_FMT_S16,
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AV_SAMPLE_FMT_S32,
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AV_SAMPLE_FMT_FLT,
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AV_SAMPLE_FMT_DBL, -1 };
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2011-08-18 13:39:24 +00:00
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ret = avfilter_graph_create_filter(&sink, abuffersink,
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inout->name, NULL,
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2013-04-12 11:38:00 +00:00
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NULL, lavfi->graph);
|
2013-04-12 18:34:35 +00:00
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if (ret >= 0)
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ret = av_opt_set_int_list(sink, "sample_fmts", sample_fmts, AV_SAMPLE_FMT_NONE, AV_OPT_SEARCH_CHILDREN);
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2011-08-18 13:39:24 +00:00
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if (ret < 0)
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goto end;
|
2013-10-28 10:50:09 +00:00
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ret = av_opt_set_int(sink, "all_channel_counts", 1,
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AV_OPT_SEARCH_CHILDREN);
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if (ret < 0)
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goto end;
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2011-08-18 13:39:24 +00:00
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}
|
2011-08-18 14:21:47 +00:00
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2011-06-11 13:40:08 +00:00
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lavfi->sinks[i] = sink;
|
2011-08-13 23:17:02 +00:00
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if ((ret = avfilter_link(inout->filter_ctx, inout->pad_idx, sink, 0)) < 0)
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2011-06-11 13:40:08 +00:00
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FAIL(ret);
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}
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/* configure the graph */
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if ((ret = avfilter_graph_config(lavfi->graph, avctx)) < 0)
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FAIL(ret);
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|
2012-01-19 18:38:11 +00:00
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if (lavfi->dump_graph) {
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char *dump = avfilter_graph_dump(lavfi->graph, lavfi->dump_graph);
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fputs(dump, stderr);
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fflush(stderr);
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av_free(dump);
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}
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|
2011-06-11 13:40:08 +00:00
|
|
|
/* fill each stream with the information in the corresponding sink */
|
|
|
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for (i = 0; i < avctx->nb_streams; i++) {
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|
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AVFilterLink *link = lavfi->sinks[lavfi->stream_sink_map[i]]->inputs[0];
|
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|
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AVStream *st = avctx->streams[i];
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|
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st->codec->codec_type = link->type;
|
2011-12-02 23:45:46 +00:00
|
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|
avpriv_set_pts_info(st, 64, link->time_base.num, link->time_base.den);
|
2011-06-11 13:40:08 +00:00
|
|
|
if (link->type == AVMEDIA_TYPE_VIDEO) {
|
2012-08-07 20:45:46 +00:00
|
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|
st->codec->codec_id = AV_CODEC_ID_RAWVIDEO;
|
2011-06-11 13:40:08 +00:00
|
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|
st->codec->pix_fmt = link->format;
|
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st->codec->time_base = link->time_base;
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st->codec->width = link->w;
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st->codec->height = link->h;
|
2011-08-21 13:09:17 +00:00
|
|
|
st ->sample_aspect_ratio =
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|
|
st->codec->sample_aspect_ratio = link->sample_aspect_ratio;
|
2013-02-28 19:24:05 +00:00
|
|
|
avctx->probesize = FFMAX(avctx->probesize,
|
|
|
|
link->w * link->h *
|
|
|
|
av_get_padded_bits_per_pixel(av_pix_fmt_desc_get(link->format)) *
|
|
|
|
30);
|
2011-08-18 13:39:24 +00:00
|
|
|
} else if (link->type == AVMEDIA_TYPE_AUDIO) {
|
2012-02-16 14:00:18 +00:00
|
|
|
st->codec->codec_id = av_get_pcm_codec(link->format, -1);
|
2013-07-13 19:41:18 +00:00
|
|
|
st->codec->channels = avfilter_link_get_channels(link);
|
2011-08-18 13:39:24 +00:00
|
|
|
st->codec->sample_fmt = link->format;
|
|
|
|
st->codec->sample_rate = link->sample_rate;
|
|
|
|
st->codec->time_base = link->time_base;
|
|
|
|
st->codec->channel_layout = link->channel_layout;
|
2012-08-07 20:45:46 +00:00
|
|
|
if (st->codec->codec_id == AV_CODEC_ID_NONE)
|
2012-02-16 14:00:18 +00:00
|
|
|
av_log(avctx, AV_LOG_ERROR,
|
|
|
|
"Could not find PCM codec for sample format %s.\n",
|
|
|
|
av_get_sample_fmt_name(link->format));
|
2011-06-11 13:40:08 +00:00
|
|
|
}
|
|
|
|
}
|
|
|
|
|
2013-03-12 13:21:27 +00:00
|
|
|
if (!(lavfi->decoded_frame = av_frame_alloc()))
|
|
|
|
FAIL(AVERROR(ENOMEM));
|
|
|
|
|
2011-06-11 13:40:08 +00:00
|
|
|
end:
|
2011-12-15 18:51:38 +00:00
|
|
|
av_free(pix_fmts);
|
2011-06-11 13:40:08 +00:00
|
|
|
avfilter_inout_free(&input_links);
|
|
|
|
avfilter_inout_free(&output_links);
|
|
|
|
if (ret < 0)
|
|
|
|
lavfi_read_close(avctx);
|
|
|
|
return ret;
|
|
|
|
}
|
|
|
|
|
|
|
|
static int lavfi_read_packet(AVFormatContext *avctx, AVPacket *pkt)
|
|
|
|
{
|
|
|
|
LavfiContext *lavfi = avctx->priv_data;
|
|
|
|
double min_pts = DBL_MAX;
|
2011-08-18 13:39:24 +00:00
|
|
|
int stream_idx, min_pts_sink_idx = 0;
|
2013-03-12 13:21:27 +00:00
|
|
|
AVFrame *frame = lavfi->decoded_frame;
|
2011-06-11 13:40:08 +00:00
|
|
|
AVPicture pict;
|
2013-03-12 13:21:27 +00:00
|
|
|
AVDictionary *frame_metadata;
|
2011-12-30 20:07:59 +00:00
|
|
|
int ret, i;
|
|
|
|
int size = 0;
|
2011-06-11 13:40:08 +00:00
|
|
|
|
|
|
|
/* iterate through all the graph sinks. Select the sink with the
|
|
|
|
* minimum PTS */
|
|
|
|
for (i = 0; i < avctx->nb_streams; i++) {
|
|
|
|
AVRational tb = lavfi->sinks[i]->inputs[0]->time_base;
|
|
|
|
double d;
|
2012-09-20 09:41:11 +00:00
|
|
|
int ret;
|
|
|
|
|
|
|
|
if (lavfi->sink_eof[i])
|
|
|
|
continue;
|
|
|
|
|
2013-03-12 13:21:27 +00:00
|
|
|
ret = av_buffersink_get_frame_flags(lavfi->sinks[i], frame,
|
|
|
|
AV_BUFFERSINK_FLAG_PEEK);
|
2012-09-20 09:41:11 +00:00
|
|
|
if (ret == AVERROR_EOF) {
|
|
|
|
av_dlog(avctx, "EOF sink_idx:%d\n", i);
|
|
|
|
lavfi->sink_eof[i] = 1;
|
|
|
|
continue;
|
|
|
|
} else if (ret < 0)
|
2011-06-11 13:40:08 +00:00
|
|
|
return ret;
|
2013-03-12 13:21:27 +00:00
|
|
|
d = av_rescale_q(frame->pts, tb, AV_TIME_BASE_Q);
|
2011-08-29 16:41:50 +00:00
|
|
|
av_dlog(avctx, "sink_idx:%d time:%f\n", i, d);
|
2013-03-12 13:21:27 +00:00
|
|
|
av_frame_unref(frame);
|
2011-08-29 16:41:50 +00:00
|
|
|
|
2011-06-11 13:40:08 +00:00
|
|
|
if (d < min_pts) {
|
|
|
|
min_pts = d;
|
|
|
|
min_pts_sink_idx = i;
|
|
|
|
}
|
|
|
|
}
|
2012-09-20 09:41:11 +00:00
|
|
|
if (min_pts == DBL_MAX)
|
|
|
|
return AVERROR_EOF;
|
|
|
|
|
2011-08-29 16:41:50 +00:00
|
|
|
av_dlog(avctx, "min_pts_sink_idx:%i\n", min_pts_sink_idx);
|
2011-06-11 13:40:08 +00:00
|
|
|
|
2013-03-12 13:21:27 +00:00
|
|
|
av_buffersink_get_frame_flags(lavfi->sinks[min_pts_sink_idx], frame, 0);
|
2011-08-18 13:39:24 +00:00
|
|
|
stream_idx = lavfi->sink_stream_map[min_pts_sink_idx];
|
2011-06-11 13:40:08 +00:00
|
|
|
|
2013-03-12 13:21:27 +00:00
|
|
|
if (frame->width /* FIXME best way of testing a video */) {
|
|
|
|
size = avpicture_get_size(frame->format, frame->width, frame->height);
|
2011-08-29 15:54:21 +00:00
|
|
|
if ((ret = av_new_packet(pkt, size)) < 0)
|
|
|
|
return ret;
|
2011-06-11 13:40:08 +00:00
|
|
|
|
2013-03-12 13:21:27 +00:00
|
|
|
memcpy(pict.data, frame->data, 4*sizeof(frame->data[0]));
|
|
|
|
memcpy(pict.linesize, frame->linesize, 4*sizeof(frame->linesize[0]));
|
2011-08-18 13:39:24 +00:00
|
|
|
|
2013-03-12 13:21:27 +00:00
|
|
|
avpicture_layout(&pict, frame->format, frame->width, frame->height,
|
|
|
|
pkt->data, size);
|
|
|
|
} else if (av_frame_get_channels(frame) /* FIXME test audio */) {
|
|
|
|
size = frame->nb_samples * av_get_bytes_per_sample(frame->format) *
|
|
|
|
av_frame_get_channels(frame);
|
2011-08-18 13:39:24 +00:00
|
|
|
if ((ret = av_new_packet(pkt, size)) < 0)
|
|
|
|
return ret;
|
2013-03-12 13:21:27 +00:00
|
|
|
memcpy(pkt->data, frame->data[0], size);
|
2011-08-18 13:39:24 +00:00
|
|
|
}
|
2011-06-11 13:40:08 +00:00
|
|
|
|
2013-03-12 13:21:27 +00:00
|
|
|
frame_metadata = av_frame_get_metadata(frame);
|
|
|
|
if (frame_metadata) {
|
2012-10-16 21:49:03 +00:00
|
|
|
uint8_t *metadata;
|
|
|
|
AVDictionaryEntry *e = NULL;
|
|
|
|
AVBPrint meta_buf;
|
|
|
|
|
|
|
|
av_bprint_init(&meta_buf, 0, AV_BPRINT_SIZE_UNLIMITED);
|
2013-03-12 13:21:27 +00:00
|
|
|
while ((e = av_dict_get(frame_metadata, "", e, AV_DICT_IGNORE_SUFFIX))) {
|
2012-10-16 21:49:03 +00:00
|
|
|
av_bprintf(&meta_buf, "%s", e->key);
|
|
|
|
av_bprint_chars(&meta_buf, '\0', 1);
|
|
|
|
av_bprintf(&meta_buf, "%s", e->value);
|
|
|
|
av_bprint_chars(&meta_buf, '\0', 1);
|
|
|
|
}
|
|
|
|
if (!av_bprint_is_complete(&meta_buf) ||
|
|
|
|
!(metadata = av_packet_new_side_data(pkt, AV_PKT_DATA_STRINGS_METADATA,
|
|
|
|
meta_buf.len))) {
|
|
|
|
av_bprint_finalize(&meta_buf, NULL);
|
|
|
|
return AVERROR(ENOMEM);
|
|
|
|
}
|
|
|
|
memcpy(metadata, meta_buf.str, meta_buf.len);
|
|
|
|
av_bprint_finalize(&meta_buf, NULL);
|
|
|
|
}
|
|
|
|
|
2011-08-18 13:39:24 +00:00
|
|
|
pkt->stream_index = stream_idx;
|
2013-03-12 13:21:27 +00:00
|
|
|
pkt->pts = frame->pts;
|
|
|
|
pkt->pos = av_frame_get_pkt_pos(frame);
|
2011-06-11 13:40:08 +00:00
|
|
|
pkt->size = size;
|
2013-03-12 13:21:27 +00:00
|
|
|
av_frame_unref(frame);
|
2011-06-11 13:40:08 +00:00
|
|
|
return size;
|
|
|
|
}
|
|
|
|
|
|
|
|
#define OFFSET(x) offsetof(LavfiContext, x)
|
|
|
|
|
|
|
|
#define DEC AV_OPT_FLAG_DECODING_PARAM
|
|
|
|
|
|
|
|
static const AVOption options[] = {
|
2012-09-11 20:51:46 +00:00
|
|
|
{ "graph", "set libavfilter graph", OFFSET(graph_str), AV_OPT_TYPE_STRING, {.str = NULL}, 0, 0, DEC },
|
2012-10-22 23:13:23 +00:00
|
|
|
{ "graph_file","set libavfilter graph filename", OFFSET(graph_filename), AV_OPT_TYPE_STRING, {.str = NULL}, 0, 0, DEC},
|
2012-09-11 20:51:46 +00:00
|
|
|
{ "dumpgraph", "dump graph to stderr", OFFSET(dump_graph), AV_OPT_TYPE_STRING, {.str = NULL}, 0, 0, DEC },
|
2011-06-11 13:40:08 +00:00
|
|
|
{ NULL },
|
|
|
|
};
|
|
|
|
|
|
|
|
static const AVClass lavfi_class = {
|
|
|
|
.class_name = "lavfi indev",
|
|
|
|
.item_name = av_default_item_name,
|
|
|
|
.option = options,
|
|
|
|
.version = LIBAVUTIL_VERSION_INT,
|
2014-02-22 22:32:51 +00:00
|
|
|
.category = AV_CLASS_CATEGORY_DEVICE_INPUT,
|
2011-06-11 13:40:08 +00:00
|
|
|
};
|
|
|
|
|
|
|
|
AVInputFormat ff_lavfi_demuxer = {
|
|
|
|
.name = "lavfi",
|
|
|
|
.long_name = NULL_IF_CONFIG_SMALL("Libavfilter virtual input device"),
|
|
|
|
.priv_data_size = sizeof(LavfiContext),
|
|
|
|
.read_header = lavfi_read_header,
|
|
|
|
.read_packet = lavfi_read_packet,
|
|
|
|
.read_close = lavfi_read_close,
|
|
|
|
.flags = AVFMT_NOFILE,
|
|
|
|
.priv_class = &lavfi_class,
|
|
|
|
};
|