FFmpeg
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#include "config.h"
#include <string.h>
#include "libavutil/avassert.h"
#include "libavutil/avstring.h"
#include "libavutil/bprint.h"
#include "libavutil/channel_layout.h"
#include "libavutil/internal.h"
#include "libavutil/opt.h"
#include "libavutil/pixdesc.h"
#include "avfilter.h"
#include "formats.h"
#include "internal.h"
#include "thread.h"
Go to the source code of this file.
Macros | |
#define | OFFSET(x) offsetof(AVFilterGraph, x) |
#define | FLAGS AV_OPT_FLAG_VIDEO_PARAM|AV_OPT_FLAG_FILTERING_PARAM |
#define | MERGE_DISPATCH(field, statement) |
#define | REDUCE_FORMATS(fmt_type, list_type, list, var, nb, add_format) |
#define | CH_CENTER_PAIR (AV_CH_FRONT_LEFT_OF_CENTER | AV_CH_FRONT_RIGHT_OF_CENTER) |
#define | CH_FRONT_PAIR (AV_CH_FRONT_LEFT | AV_CH_FRONT_RIGHT) |
#define | CH_STEREO_PAIR (AV_CH_STEREO_LEFT | AV_CH_STEREO_RIGHT) |
#define | CH_WIDE_PAIR (AV_CH_WIDE_LEFT | AV_CH_WIDE_RIGHT) |
#define | CH_SIDE_PAIR (AV_CH_SIDE_LEFT | AV_CH_SIDE_RIGHT) |
#define | CH_DIRECT_PAIR (AV_CH_SURROUND_DIRECT_LEFT | AV_CH_SURROUND_DIRECT_RIGHT) |
#define | CH_BACK_PAIR (AV_CH_BACK_LEFT | AV_CH_BACK_RIGHT) |
Functions | |
void | ff_graph_thread_free (AVFilterGraph *graph) |
int | ff_graph_thread_init (AVFilterGraph *graph) |
AVFilterGraph * | avfilter_graph_alloc (void) |
Allocate a filter graph. | |
void | ff_filter_graph_remove_filter (AVFilterGraph *graph, AVFilterContext *filter) |
Remove a filter from a graph;. | |
void | avfilter_graph_free (AVFilterGraph **graph) |
Free a graph, destroy its links, and set *graph to NULL. | |
int | avfilter_graph_create_filter (AVFilterContext **filt_ctx, const AVFilter *filt, const char *name, const char *args, void *opaque, AVFilterGraph *graph_ctx) |
Create and add a filter instance into an existing graph. | |
void | avfilter_graph_set_auto_convert (AVFilterGraph *graph, unsigned flags) |
Enable or disable automatic format conversion inside the graph. | |
AVFilterContext * | avfilter_graph_alloc_filter (AVFilterGraph *graph, const AVFilter *filter, const char *name) |
Create a new filter instance in a filter graph. | |
static int | graph_check_validity (AVFilterGraph *graph, AVClass *log_ctx) |
Check for the validity of graph. | |
static int | graph_config_links (AVFilterGraph *graph, AVClass *log_ctx) |
Configure all the links of graphctx. | |
AVFilterContext * | avfilter_graph_get_filter (AVFilterGraph *graph, const char *name) |
Get a filter instance identified by instance name from graph. | |
static void | sanitize_channel_layouts (void *log, AVFilterChannelLayouts *l) |
static int | filter_query_formats (AVFilterContext *ctx) |
static int | formats_declared (AVFilterContext *f) |
static AVFilterFormats * | clone_filter_formats (AVFilterFormats *arg) |
static int | can_merge_formats (AVFilterFormats *a_arg, AVFilterFormats *b_arg, enum AVMediaType type, int is_sample_rate) |
static int | query_formats (AVFilterGraph *graph, AVClass *log_ctx) |
Perform one round of query_formats() and merging formats lists on the filter graph. | |
static int | pick_format (AVFilterLink *link, AVFilterLink *ref) |
static int | reduce_formats_on_filter (AVFilterContext *filter) |
static void | reduce_formats (AVFilterGraph *graph) |
static void | swap_samplerates_on_filter (AVFilterContext *filter) |
static void | swap_samplerates (AVFilterGraph *graph) |
static void | swap_channel_layouts_on_filter (AVFilterContext *filter) |
static void | swap_channel_layouts (AVFilterGraph *graph) |
static void | swap_sample_fmts_on_filter (AVFilterContext *filter) |
static void | swap_sample_fmts (AVFilterGraph *graph) |
static int | pick_formats (AVFilterGraph *graph) |
static int | graph_config_formats (AVFilterGraph *graph, AVClass *log_ctx) |
Configure the formats of all the links in the graph. | |
static int | ff_avfilter_graph_config_pointers (AVFilterGraph *graph, AVClass *log_ctx) |
static int | graph_insert_fifos (AVFilterGraph *graph, AVClass *log_ctx) |
int | avfilter_graph_config (AVFilterGraph *graphctx, void *log_ctx) |
Check validity and configure all the links and formats in the graph. | |
int | avfilter_graph_send_command (AVFilterGraph *graph, const char *target, const char *cmd, const char *arg, char *res, int res_len, int flags) |
Send a command to one or more filter instances. | |
int | avfilter_graph_queue_command (AVFilterGraph *graph, const char *target, const char *command, const char *arg, int flags, double ts) |
Queue a command for one or more filter instances. | |
static void | heap_bubble_up (AVFilterGraph *graph, AVFilterLink *link, int index) |
static void | heap_bubble_down (AVFilterGraph *graph, AVFilterLink *link, int index) |
void | ff_avfilter_graph_update_heap (AVFilterGraph *graph, AVFilterLink *link) |
Update the position of a link in the age heap. | |
int | avfilter_graph_request_oldest (AVFilterGraph *graph) |
Request a frame on the oldest sink link. | |
Variables | |
static const AVOption | filtergraph_options [] |
static const AVClass | filtergraph_class |
static const uint64_t | ch_subst [][2] |
#define OFFSET | ( | x | ) | offsetof(AVFilterGraph, x) |
Definition at line 40 of file avfiltergraph.c.
#define FLAGS AV_OPT_FLAG_VIDEO_PARAM|AV_OPT_FLAG_FILTERING_PARAM |
Definition at line 41 of file avfiltergraph.c.
#define MERGE_DISPATCH | ( | field, | |
statement | |||
) |
Referenced by query_formats().
#define REDUCE_FORMATS | ( | fmt_type, | |
list_type, | |||
list, | |||
var, | |||
nb, | |||
add_format | |||
) |
Definition at line 680 of file avfiltergraph.c.
Referenced by reduce_formats_on_filter().
#define CH_CENTER_PAIR (AV_CH_FRONT_LEFT_OF_CENTER | AV_CH_FRONT_RIGHT_OF_CENTER) |
Definition at line 824 of file avfiltergraph.c.
#define CH_FRONT_PAIR (AV_CH_FRONT_LEFT | AV_CH_FRONT_RIGHT) |
Definition at line 825 of file avfiltergraph.c.
#define CH_STEREO_PAIR (AV_CH_STEREO_LEFT | AV_CH_STEREO_RIGHT) |
Definition at line 826 of file avfiltergraph.c.
#define CH_WIDE_PAIR (AV_CH_WIDE_LEFT | AV_CH_WIDE_RIGHT) |
Definition at line 827 of file avfiltergraph.c.
#define CH_SIDE_PAIR (AV_CH_SIDE_LEFT | AV_CH_SIDE_RIGHT) |
Definition at line 828 of file avfiltergraph.c.
#define CH_DIRECT_PAIR (AV_CH_SURROUND_DIRECT_LEFT | AV_CH_SURROUND_DIRECT_RIGHT) |
Definition at line 829 of file avfiltergraph.c.
#define CH_BACK_PAIR (AV_CH_BACK_LEFT | AV_CH_BACK_RIGHT) |
Definition at line 830 of file avfiltergraph.c.
void ff_graph_thread_free | ( | AVFilterGraph * | graph | ) |
Definition at line 64 of file avfiltergraph.c.
Referenced by avfilter_graph_free().
int ff_graph_thread_init | ( | AVFilterGraph * | graph | ) |
Definition at line 68 of file avfiltergraph.c.
Referenced by avfilter_graph_alloc_filter().
void ff_filter_graph_remove_filter | ( | AVFilterGraph * | graph, |
AVFilterContext * | filter | ||
) |
Remove a filter from a graph;.
Definition at line 94 of file avfiltergraph.c.
Referenced by avfilter_free().
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Check for the validity of graph.
A graph is considered valid if all its input and output pads are connected.
Definition at line 228 of file avfiltergraph.c.
Referenced by avfilter_graph_config().
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Configure all the links of graphctx.
Definition at line 266 of file avfiltergraph.c.
Referenced by avfilter_graph_config().
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Definition at line 294 of file avfiltergraph.c.
Referenced by filter_query_formats().
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Definition at line 309 of file avfiltergraph.c.
Referenced by query_formats().
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Definition at line 348 of file avfiltergraph.c.
Referenced by query_formats().
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Definition at line 371 of file avfiltergraph.c.
Referenced by can_merge_formats().
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Definition at line 384 of file avfiltergraph.c.
Referenced by query_formats().
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Perform one round of query_formats() and merging formats lists on the filter graph.
Definition at line 436 of file avfiltergraph.c.
Referenced by graph_config_formats().
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Definition at line 618 of file avfiltergraph.c.
Referenced by pick_formats().
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Definition at line 716 of file avfiltergraph.c.
Referenced by reduce_formats().
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Definition at line 765 of file avfiltergraph.c.
Referenced by graph_config_formats().
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Definition at line 777 of file avfiltergraph.c.
Referenced by swap_samplerates().
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Definition at line 816 of file avfiltergraph.c.
Referenced by graph_config_formats().
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Definition at line 858 of file avfiltergraph.c.
Referenced by swap_channel_layouts().
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Definition at line 947 of file avfiltergraph.c.
Referenced by graph_config_formats().
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Definition at line 955 of file avfiltergraph.c.
Referenced by swap_sample_fmts().
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Definition at line 1015 of file avfiltergraph.c.
Referenced by graph_config_formats().
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Definition at line 1024 of file avfiltergraph.c.
Referenced by graph_config_formats().
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Configure the formats of all the links in the graph.
Definition at line 1079 of file avfiltergraph.c.
Referenced by avfilter_graph_config().
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Definition at line 1106 of file avfiltergraph.c.
Referenced by avfilter_graph_config().
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Definition at line 1148 of file avfiltergraph.c.
Referenced by avfilter_graph_config().
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Definition at line 1262 of file avfiltergraph.c.
Referenced by ff_avfilter_graph_update_heap().
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Definition at line 1279 of file avfiltergraph.c.
Referenced by avfilter_graph_request_oldest(), and ff_avfilter_graph_update_heap().
void ff_avfilter_graph_update_heap | ( | AVFilterGraph * | graph, |
AVFilterLink * | link | ||
) |
Update the position of a link in the age heap.
Definition at line 1301 of file avfiltergraph.c.
Referenced by ff_update_link_current_pts().
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Definition at line 42 of file avfiltergraph.c.
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Definition at line 55 of file avfiltergraph.c.
Referenced by avfilter_graph_alloc().
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Definition at line 834 of file avfiltergraph.c.