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@@ -57,6 +57,16 @@ typedef struct AVFilterGraphDescExport |
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struct AVFilterGraphDescExport *next; |
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} AVFilterGraphDescExport; |
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/** Sections of a filter graph description */ |
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typedef enum |
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{ |
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SEC_NONE = 0, |
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SEC_FILTERS, |
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SEC_LINKS, |
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SEC_INPUTS, |
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SEC_OUTPUTS |
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} AVFilterGraphDescSection; |
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/** Description of a graph to be loaded from a file, etc */ |
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typedef struct |
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{ |
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@@ -66,6 +76,30 @@ typedef struct |
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AVFilterGraphDescExport *outputs; ///< outputs to export |
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} AVFilterGraphDesc; |
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typedef struct |
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{ |
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AVFilterGraphDescSection section; ///< current section being parsed |
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AVFilterGraphDescFilter **filterp; ///< last parsed filter |
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AVFilterGraphDescLink **linkp; ///< last parsed link |
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AVFilterGraphDescExport **inputp; ///< last parsed exported input |
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AVFilterGraphDescExport **outputp; ///< last parsed exported output |
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} AVFilterGraphDescParser; |
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/** Parse a line of a filter graph description. |
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* @param desc Pointer to an AVFilterGraphDesc pointer. If *desc is NULL, |
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* a new AVFilterGraphDesc structure will be created for you. |
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* Must be the same between multiple invocations when parsing |
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* the same description. |
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* @param parser Parser state. Must be the same between multiple invocations |
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* when parsing the same description |
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* @param line Line of the graph description to parse. |
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* @return Zero on success, negative on error. |
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*/ |
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int avfilter_graph_parse_desc(AVFilterGraphDesc **desc, |
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AVFilterGraphDescParser **parser, |
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char *line); |
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/** |
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* Load a filter graph description from a file |
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* @param filename Name of the file from which to load the description |
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