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Data Structures | |
struct | AVFilterGraph |
struct | AVFilterInOut |
A linked-list of the inputs/outputs of the filter chain. More... | |
Typedefs | |
typedef struct AVFilterGraph | AVFilterGraph |
typedef struct AVFilterInOut | AVFilterInOut |
A linked-list of the inputs/outputs of the filter chain. More... | |
Functions | |
AVFilterGraph * | avfilter_graph_alloc (void) |
Allocate a filter graph. More... | |
AVFilterContext * | avfilter_graph_get_filter (AVFilterGraph *graph, char *name) |
Get a filter instance with name name from graph. More... | |
int | avfilter_graph_add_filter (AVFilterGraph *graphctx, AVFilterContext *filter) |
Add an existing filter instance to a filter graph. More... | |
int | avfilter_graph_create_filter (AVFilterContext **filt_ctx, AVFilter *filt, const char *name, const char *args, void *opaque, AVFilterGraph *graph_ctx) |
Create and add a filter instance into an existing graph. More... | |
int | avfilter_graph_config (AVFilterGraph *graphctx, void *log_ctx) |
Check validity and configure all the links and formats in the graph. More... | |
void | avfilter_graph_free (AVFilterGraph **graph) |
Free a graph, destroy its links, and set *graph to NULL. More... | |
AVFilterInOut * | avfilter_inout_alloc (void) |
Allocate a single AVFilterInOut entry. More... | |
void | avfilter_inout_free (AVFilterInOut **inout) |
Free the supplied list of AVFilterInOut and set *inout to NULL. More... | |
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. More... | |
int | avfilter_graph_parse2 (AVFilterGraph *graph, const char *filters, AVFilterInOut **inputs, AVFilterInOut **outputs) |
Add a graph described by a string to a graph. More... | |
typedef struct AVFilterGraph AVFilterGraph |
typedef struct AVFilterInOut AVFilterInOut |
A linked-list of the inputs/outputs of the filter chain.
This is mainly useful for avfilter_graph_parse() / avfilter_graph_parse2(), where it is used to communicate open (unlinked) inputs and outputs from and to the caller. This struct specifies, per each not connected pad contained in the graph, the filter context and the pad index required for establishing a link.
int avfilter_graph_add_filter | ( | AVFilterGraph * | graphctx, |
AVFilterContext * | filter | ||
) |
Add an existing filter instance to a filter graph.
graphctx | the filter graph |
filter | the filter to be added |
Definition at line 62 of file avfiltergraph.c.
Referenced by avfilter_graph_create_filter(), and create_filter().
AVFilterGraph* avfilter_graph_alloc | ( | void | ) |
Allocate a filter graph.
Definition at line 42 of file avfiltergraph.c.
Referenced by configure_filtergraph(), and video_thread().
int avfilter_graph_config | ( | AVFilterGraph * | graphctx, |
void * | log_ctx | ||
) |
Check validity and configure all the links and formats in the graph.
graphctx | the filter graph |
log_ctx | context used for logging |
Definition at line 699 of file avfiltergraph.c.
Referenced by configure_filtergraph(), main(), and transcode_init().
int avfilter_graph_create_filter | ( | AVFilterContext ** | filt_ctx, |
AVFilter * | filt, | ||
const char * | name, | ||
const char * | args, | ||
void * | opaque, | ||
AVFilterGraph * | graph_ctx | ||
) |
Create and add a filter instance into an existing graph.
The filter instance is created from the filter filt and inited with the parameters args and opaque.
In case of success put in *filt_ctx the pointer to the created filter instance, otherwise set *filt_ctx to NULL.
name | the instance name to give to the created filter instance |
graph_ctx | the filter graph |
Definition at line 75 of file avfiltergraph.c.
Referenced by configure_input_audio_filter(), configure_input_video_filter(), configure_output_audio_filter(), configure_output_video_filter(), graph_insert_fifos(), and query_formats().
void avfilter_graph_free | ( | AVFilterGraph ** | graph) |
Free a graph, destroy its links, and set *graph to NULL.
If *graph is NULL, do nothing.
Definition at line 51 of file avfiltergraph.c.
Referenced by configure_filtergraph(), exit_program(), and video_thread().
AVFilterContext* avfilter_graph_get_filter | ( | AVFilterGraph * | graph, |
char * | name | ||
) |
Get a filter instance with name name from graph.
Definition at line 156 of file avfiltergraph.c.
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 453 of file graphparser.c.
Referenced by main().
int avfilter_graph_parse2 | ( | AVFilterGraph * | graph, |
const char * | filters, | ||
AVFilterInOut ** | inputs, | ||
AVFilterInOut ** | outputs | ||
) |
Add a graph described by a string to a graph.
[in] | graph | the filter graph where to link the parsed graph context |
[in] | filters | string to be parsed |
[out] | inputs | a linked list of all free (unlinked) inputs of the parsed graph will be returned here. It is to be freed by the caller using avfilter_inout_free(). |
[out] | outputs | a linked list of all free (unlinked) outputs of the parsed graph will be returned here. It is to be freed by the caller using avfilter_inout_free(). |
Definition at line 385 of file graphparser.c.
Referenced by avfilter_graph_parse(), and configure_filtergraph().
AVFilterInOut* avfilter_inout_alloc | ( | void | ) |
Allocate a single AVFilterInOut entry.
Must be freed with avfilter_inout_free().
Definition at line 176 of file graphparser.c.
void avfilter_inout_free | ( | AVFilterInOut ** | inout) |
Free the supplied list of AVFilterInOut and set *inout to NULL.
If *inout is NULL, do nothing.
Definition at line 181 of file graphparser.c.
Referenced by avfilter_graph_parse(), avfilter_graph_parse2(), configure_filtergraph(), and init_output_filter().