#include <ctype.h>
#include <string.h>
#include "libavutil/avstring.h"
#include "avfilter.h"
#include "avfiltergraph.h"
Go to the source code of this file.
Defines | |
#define | WHITESPACES " \n\t" |
Functions | |
static int | link_filter (AVFilterContext *src, int srcpad, AVFilterContext *dst, int dstpad, void *log_ctx) |
Link two filters together. | |
static char * | parse_link_name (const char **buf, void *log_ctx) |
Parse the name of a link, which has the format "[linkname]". | |
static int | create_filter (AVFilterContext **filt_ctx, AVFilterGraph *ctx, int index, const char *filt_name, const char *args, void *log_ctx) |
Create an instance of a filter, initialize and insert it in the filtergraph in *ctx. | |
static int | parse_filter (AVFilterContext **filt_ctx, const char **buf, AVFilterGraph *graph, int index, void *log_ctx) |
Parse a string of the form FILTER_NAME[=PARAMS], and create a corresponding filter instance which is added to graph with create_filter(). | |
static void | free_inout (AVFilterInOut *head) |
static AVFilterInOut * | extract_inout (const char *label, AVFilterInOut **links) |
static void | insert_inout (AVFilterInOut **inouts, AVFilterInOut *element) |
static int | link_filter_inouts (AVFilterContext *filt_ctx, AVFilterInOut **curr_inputs, AVFilterInOut **open_inputs, void *log_ctx) |
static int | parse_inputs (const char **buf, AVFilterInOut **curr_inputs, AVFilterInOut **open_outputs, void *log_ctx) |
static int | parse_outputs (const char **buf, AVFilterInOut **curr_inputs, AVFilterInOut **open_inputs, AVFilterInOut **open_outputs, void *log_ctx) |
int | avfilter_graph_parse (AVFilterGraph *graph, const char *filters, AVFilterInOut *open_inputs, AVFilterInOut *open_outputs, void *log_ctx) |
Add a graph described by a string to a graph. |
#define WHITESPACES " \n\t" |
Definition at line 30 of file graphparser.c.
Referenced by avfilter_graph_parse(), parse_inputs(), and parse_outputs().
int avfilter_graph_parse | ( | AVFilterGraph * | graph, |
const char * | filters, | ||
AVFilterInOut * | inputs, | ||
AVFilterInOut * | outputs, | ||
void * | log_ctx | ||
) |
Add a graph described by a string to a graph.
graph | the filter graph where to link the parsed graph context |
filters | string to be parsed |
inputs | linked list to the inputs of the graph |
outputs | linked list to the outputs of the graph |
Definition at line 332 of file graphparser.c.
Referenced by main().
static int create_filter | ( | AVFilterContext ** | filt_ctx, |
AVFilterGraph * | ctx, | ||
int | index, | ||
const char * | filt_name, | ||
const char * | args, | ||
void * | log_ctx | ||
) | [static] |
Create an instance of a filter, initialize and insert it in the filtergraph in *ctx.
filt_ctx | put here a filter context in case of successful creation and configuration, NULL otherwise. |
ctx | the filtergraph context |
index | an index which is supposed to be unique for each filter instance added to the filtergraph |
filt_name | the name of the filter to create |
args | the arguments provided to the filter during its initialization |
log_ctx | the log context to use |
Definition at line 94 of file graphparser.c.
Referenced by parse_filter().
static AVFilterInOut* extract_inout | ( | const char * | label, |
AVFilterInOut ** | links | ||
) | [static] |
Definition at line 183 of file graphparser.c.
Referenced by parse_inputs(), and parse_outputs().
static void free_inout | ( | AVFilterInOut * | head | ) | [static] |
Definition at line 173 of file graphparser.c.
Referenced by avfilter_graph_parse().
static void insert_inout | ( | AVFilterInOut ** | inouts, |
AVFilterInOut * | element | ||
) | [static] |
Definition at line 198 of file graphparser.c.
Referenced by link_filter_inouts(), parse_inputs(), and parse_outputs().
static int link_filter | ( | AVFilterContext * | src, |
int | srcpad, | ||
AVFilterContext * | dst, | ||
int | dstpad, | ||
void * | log_ctx | ||
) | [static] |
Link two filters together.
Definition at line 37 of file graphparser.c.
Referenced by link_filter_inouts(), and parse_outputs().
static int link_filter_inouts | ( | AVFilterContext * | filt_ctx, |
AVFilterInOut ** | curr_inputs, | ||
AVFilterInOut ** | open_inputs, | ||
void * | log_ctx | ||
) | [static] |
Definition at line 204 of file graphparser.c.
Referenced by avfilter_graph_parse().
static int parse_filter | ( | AVFilterContext ** | filt_ctx, |
const char ** | buf, | ||
AVFilterGraph * | graph, | ||
int | index, | ||
void * | log_ctx | ||
) | [static] |
Parse a string of the form FILTER_NAME[=PARAMS], and create a corresponding filter instance which is added to graph with create_filter().
filt_ctx | Pointer that is set to the created and configured filter context on success, set to NULL on failure. |
filt_ctx | put here a pointer to the created filter context on success, NULL otherwise |
buf | pointer to the buffer to parse, *buf will be updated to point to the char next after the parsed string |
index | an index which is assigned to the created filter instance, and which is supposed to be unique for each filter instance added to the filtergraph |
Definition at line 155 of file graphparser.c.
Referenced by avfilter_graph_parse().
static int parse_inputs | ( | const char ** | buf, |
AVFilterInOut ** | curr_inputs, | ||
AVFilterInOut ** | open_outputs, | ||
void * | log_ctx | ||
) | [static] |
Definition at line 253 of file graphparser.c.
Referenced by avfilter_graph_parse().
static char* parse_link_name | ( | const char ** | buf, |
void * | log_ctx | ||
) | [static] |
Parse the name of a link, which has the format "[linkname]".
Definition at line 58 of file graphparser.c.
Referenced by parse_inputs(), and parse_outputs().
static int parse_outputs | ( | const char ** | buf, |
AVFilterInOut ** | curr_inputs, | ||
AVFilterInOut ** | open_inputs, | ||
AVFilterInOut ** | open_outputs, | ||
void * | log_ctx | ||
) | [static] |
Definition at line 287 of file graphparser.c.
Referenced by avfilter_graph_parse().