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77 lines
2.2 KiB
77 lines
2.2 KiB
/* |
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* Filter graphs |
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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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#ifndef AVFILTER_AVFILTERGRAPH_H |
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#define AVFILTER_AVFILTERGRAPH_H |
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#include "avfilter.h" |
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typedef struct AVFilterGraph { |
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unsigned filter_count; |
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AVFilterContext **filters; |
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char *scale_sws_opts; ///< sws options to use for the auto-inserted scale filters |
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} AVFilterGraph; |
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/** |
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* Gets a filter instance with name name from graph. |
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* |
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* @return the pointer to the found filter instance or NULL if it |
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* cannot be found. |
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*/ |
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AVFilterContext *avfilter_graph_get_filter(AVFilterGraph *graph, char *name); |
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/** |
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* Adds an existing filter instance to a filter graph. |
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* |
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* @param graph the filter graph |
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* @param filter the filter to be added |
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*/ |
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int avfilter_graph_add_filter(AVFilterGraph *graphctx, AVFilterContext *filter); |
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/** |
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* Checks for the validity of graph. |
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* |
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* A graph is considered valid if all its input and output pads are |
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* connected. |
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* |
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* @return 0 in case of success, a negative value otherwise |
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*/ |
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int avfilter_graph_check_validity(AVFilterGraph *graphctx, AVClass *log_ctx); |
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/** |
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* Configures all the links of graphctx. |
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* |
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* @return 0 in case of success, a negative value otherwise |
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*/ |
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int avfilter_graph_config_links(AVFilterGraph *graphctx, AVClass *log_ctx); |
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/** |
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* Configures the formats of all the links in the graph. |
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*/ |
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int avfilter_graph_config_formats(AVFilterGraph *graphctx, AVClass *log_ctx); |
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/** |
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* Frees a graph and destroys its links. |
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*/ |
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void avfilter_graph_destroy(AVFilterGraph *graph); |
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#endif /* AVFILTER_AVFILTERGRAPH_H */
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