#include "libavutil/pixdesc.h"#include "libavutil/rational.h"#include "libavutil/audioconvert.h"#include "libavutil/avassert.h"#include "libavutil/avstring.h"#include "avfilter.h"#include "formats.h"#include "internal.h"Go to the source code of this file.
Defines | |
| #define | LICENSE_PREFIX "libavfilter license: " |
| #define | MAX_REGISTERED_AVFILTERS_NB 128 |
Functions | |
| unsigned | avfilter_version (void) |
| Return the LIBAVFILTER_VERSION_INT constant. | |
| const char * | avfilter_configuration (void) |
| Return the libavfilter build-time configuration. | |
| const char * | avfilter_license (void) |
| Return the libavfilter license. | |
| void | ff_command_queue_pop (AVFilterContext *filter) |
| void | avfilter_insert_pad (unsigned idx, unsigned *count, size_t padidx_off, AVFilterPad **pads, AVFilterLink ***links, AVFilterPad *newpad) |
| Insert a new pad. | |
| int | avfilter_link (AVFilterContext *src, unsigned srcpad, AVFilterContext *dst, unsigned dstpad) |
| Link two filters together. | |
| void | avfilter_link_free (AVFilterLink **link) |
| Free the link in *link, and set its pointer to NULL. | |
| int | avfilter_insert_filter (AVFilterLink *link, AVFilterContext *filt, unsigned filt_srcpad_idx, unsigned filt_dstpad_idx) |
| Insert a filter in the middle of an existing link. | |
| int | avfilter_config_links (AVFilterContext *filter) |
| Negotiate the media format, dimensions, etc of all inputs to a filter. | |
| void | ff_dlog_link (void *ctx, AVFilterLink *link, int end) |
| int | avfilter_request_frame (AVFilterLink *link) |
| Request an input frame from the filter at the other end of the link. | |
| int | avfilter_poll_frame (AVFilterLink *link) |
| Poll a frame from the filter chain. | |
| void | ff_update_link_current_pts (AVFilterLink *link, int64_t pts) |
| int | avfilter_process_command (AVFilterContext *filter, const char *cmd, const char *arg, char *res, int res_len, int flags) |
| Make the filter instance process a command. | |
| AVFilter * | avfilter_get_by_name (const char *name) |
| Get a filter definition matching the given name. | |
| int | avfilter_register (AVFilter *filter) |
| Register a filter. | |
| AVFilter ** | av_filter_next (AVFilter **filter) |
| If filter is NULL, returns a pointer to the first registered filter pointer, if filter is non-NULL, returns the next pointer after filter. | |
| void | avfilter_uninit (void) |
| Uninitialize the filter system. | |
| static int | pad_count (const AVFilterPad *pads) |
| static const char * | filter_name (void *p) |
| int | avfilter_open (AVFilterContext **filter_ctx, AVFilter *filter, const char *inst_name) |
| Create a filter instance. | |
| void | avfilter_free (AVFilterContext *filter) |
| Free a filter context. | |
| int | avfilter_init_filter (AVFilterContext *filter, const char *args, void *opaque) |
| Initialize a filter. | |
Variables | |
| static AVFilter * | registered_avfilters [MAX_REGISTERED_AVFILTERS_NB+1] |
| static int | next_registered_avfilter_idx = 0 |
| static const AVClass | avfilter_class |
| #define LICENSE_PREFIX "libavfilter license: " |
| #define MAX_REGISTERED_AVFILTERS_NB 128 |
If filter is NULL, returns a pointer to the first registered filter pointer, if filter is non-NULL, returns the next pointer after filter.
If the returned pointer points to NULL, the last registered filter was already reached.
Definition at line 350 of file avfilter.c.
Referenced by opt_filters().
| int avfilter_config_links | ( | AVFilterContext * | filter | ) |
Negotiate the media format, dimensions, etc of all inputs to a filter.
| filter | the filter to negotiate the properties for its inputs |
Definition at line 158 of file avfilter.c.
Referenced by avfilter_config_links(), and ff_avfilter_graph_config_links().
| const char* avfilter_configuration | ( | void | ) |
| void avfilter_free | ( | AVFilterContext * | filter | ) |
Free a filter context.
| filter | the filter to free |
Definition at line 440 of file avfilter.c.
Referenced by avfilter_graph_create_filter(), avfilter_graph_free(), avfilter_graph_parse(), avfilter_graph_parse2(), create_filter(), and main().
| AVFilter* avfilter_get_by_name | ( | const char * | name | ) |
Get a filter definition matching the given name.
| name | the filter name to find |
Definition at line 325 of file avfilter.c.
Referenced by configure_complex_filter(), configure_output_audio_filter(), configure_output_video_filter(), configure_video_filters(), create_filter(), DEF_CHOOSE_FORMAT(), init_filters(), insert_conv_filter(), lavfi_read_header(), main(), and query_formats().
| int avfilter_init_filter | ( | AVFilterContext * | filter, | |
| const char * | args, | |||
| void * | opaque | |||
| ) |
Initialize a filter.
| filter | the filter to initialize | |
| args | A string of parameters to use when initializing the filter. The format and meaning of this string varies by filter. | |
| opaque | Any extra non-string data needed by the filter. The meaning of this parameter varies by filter. |
Definition at line 490 of file avfilter.c.
Referenced by avfilter_graph_create_filter(), create_filter(), and main().
| int avfilter_insert_filter | ( | AVFilterLink * | link, | |
| AVFilterContext * | filt, | |||
| unsigned | filt_srcpad_idx, | |||
| unsigned | filt_dstpad_idx | |||
| ) |
Insert a filter in the middle of an existing link.
| link | the link into which the filter should be inserted | |
| filt | the filter to be inserted | |
| filt_srcpad_idx | the input pad on the filter to connect | |
| filt_dstpad_idx | the output pad on the filter to connect |
Definition at line 121 of file avfilter.c.
Referenced by insert_conv_filter(), and query_formats().
| void avfilter_insert_pad | ( | unsigned | idx, | |
| unsigned * | count, | |||
| size_t | padidx_off, | |||
| AVFilterPad ** | pads, | |||
| AVFilterLink *** | links, | |||
| AVFilterPad * | newpad | |||
| ) |
Insert a new pad.
| idx | Insertion point. Pad is inserted at the end if this point is beyond the end of the list of pads. | |
| count | Pointer to the number of pads in the list | |
| padidx_off | Offset within an AVFilterLink structure to the element to increment when inserting a new pad causes link numbering to change | |
| pads | Pointer to the pointer to the beginning of the list of pads | |
| links | Pointer to the pointer to the beginning of the list of links | |
| newpad | The new pad to add. A copy is made when adding. |
Definition at line 59 of file avfilter.c.
Referenced by avfilter_insert_inpad(), and avfilter_insert_outpad().
| const char* avfilter_license | ( | void | ) |
| int avfilter_link | ( | AVFilterContext * | src, | |
| unsigned | srcpad, | |||
| AVFilterContext * | dst, | |||
| unsigned | dstpad | |||
| ) |
Link two filters together.
| src | the source filter | |
| srcpad | index of the output pad on the source filter | |
| dst | the destination filter | |
| dstpad | index of the input pad on the destination filter |
Definition at line 80 of file avfilter.c.
Referenced by avfilter_graph_parse(), avfilter_insert_filter(), configure_complex_filter(), configure_output_audio_filter(), configure_output_video_filter(), configure_simple_filtergraph(), configure_video_filters(), DEF_CHOOSE_FORMAT(), lavfi_read_header(), and link_filter().
| void avfilter_link_free | ( | AVFilterLink ** | link | ) |
Free the link in *link, and set its pointer to NULL.
Definition at line 110 of file avfilter.c.
Referenced by avfilter_free().
| int avfilter_open | ( | AVFilterContext ** | filter_ctx, | |
| AVFilter * | filter, | |||
| const char * | inst_name | |||
| ) |
Create a filter instance.
| filter_ctx | put here a pointer to the created filter context on success, NULL on failure | |
| filter | the filter to create an instance of | |
| inst_name | Name to give to the new instance. Can be NULL for none. |
Definition at line 382 of file avfilter.c.
Referenced by avfilter_graph_create_filter(), create_filter(), and main().
| int avfilter_poll_frame | ( | AVFilterLink * | link | ) |
Poll a frame from the filter chain.
| link | the input link |
Definition at line 281 of file avfilter.c.
Referenced by av_buffersink_poll_frame(), av_buffersink_read(), avfilter_poll_frame(), main(), and poll_frame().
| int avfilter_process_command | ( | AVFilterContext * | filter, | |
| const char * | cmd, | |||
| const char * | arg, | |||
| char * | res, | |||
| int | res_len, | |||
| int | flags | |||
| ) |
Make the filter instance process a command.
It is recommended to use avfilter_graph_send_command().
Definition at line 308 of file avfilter.c.
Referenced by avfilter_graph_send_command(), and avfilter_start_frame().
| int avfilter_register | ( | AVFilter * | filter | ) |
Register a filter.
This is only needed if you plan to use avfilter_get_by_name later to lookup the AVFilter structure by name. A filter can still by instantiated with avfilter_open even if it is not registered.
| filter | the filter to register |
Definition at line 336 of file avfilter.c.
Referenced by avfilter_register_all().
| int avfilter_request_frame | ( | AVFilterLink * | link | ) |
Request an input frame from the filter at the other end of the link.
| link | the input link |
Definition at line 270 of file avfilter.c.
Referenced by av_buffersink_get_buffer_ref(), av_buffersink_read(), avfilter_graph_request_oldest(), avfilter_request_frame(), poll_frame(), request_frame(), request_samples(), and start_frame().
| void avfilter_uninit | ( | void | ) |
Uninitialize the filter system.
Unregister all filters.
Definition at line 355 of file avfilter.c.
Referenced by do_exit(), and exit_program().
| unsigned avfilter_version | ( | void | ) |
| void ff_command_queue_pop | ( | AVFilterContext * | filter | ) |
Definition at line 50 of file avfilter.c.
Referenced by avfilter_free(), and avfilter_start_frame().
| void ff_dlog_link | ( | void * | ctx, | |
| AVFilterLink * | link, | |||
| int | end | |||
| ) |
Definition at line 246 of file avfilter.c.
Referenced by avfilter_draw_slice(), avfilter_get_video_buffer(), avfilter_request_frame(), avfilter_start_frame(), and ff_filter_samples().
| void ff_update_link_current_pts | ( | AVFilterLink * | link, | |
| int64_t | pts | |||
| ) |
Definition at line 299 of file avfilter.c.
Referenced by avfilter_start_frame(), and ff_filter_samples().
| static const char* filter_name | ( | void * | p | ) | [static] |
| static int pad_count | ( | const AVFilterPad * | pads | ) | [static] |
const AVClass avfilter_class [static] |
Initial value:
{
"AVFilter",
filter_name,
NULL,
LIBAVUTIL_VERSION_INT,
}
Definition at line 375 of file avfilter.c.
int next_registered_avfilter_idx = 0 [static] |
Definition at line 323 of file avfilter.c.
Referenced by avfilter_register(), and avfilter_uninit().
AVFilter* registered_avfilters[MAX_REGISTERED_AVFILTERS_NB+1] [static] |
Definition at line 321 of file avfilter.c.
1.5.8