#include "config.h"
#include <string.h>
#include "libavutil/avassert.h"
#include "libavutil/avstring.h"
#include "libavutil/channel_layout.h"
#include "libavutil/common.h"
#include "libavutil/internal.h"
#include "libavutil/log.h"
#include "libavutil/opt.h"
#include "avfilter.h"
#include "formats.h"
#include "internal.h"
#include "thread.h"

Macros
#define	OFFSET(x) offsetof(AVFilterGraph, x)
#define	FLAGS AV_OPT_FLAG_VIDEO_PARAM
#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.
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, char name)
	Get a filter instance with name name from graph.
static int	query_formats (AVFilterGraph graph, AVClass log_ctx)
static int	pick_format (AVFilterLink *link)
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	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.

Variables
static const AVOption	filtergraph_options []
static const AVClass	filtergraph_class
static const uint64_t	ch_subst [][2]

Macro Definition Documentation

#define OFFSET ( x ) offsetof(AVFilterGraph, x)

Definition at line 40 of file avfiltergraph.c.

#define FLAGS AV_OPT_FLAG_VIDEO_PARAM

Definition at line 41 of file avfiltergraph.c.

#define REDUCE_FORMATS	(	fmt_type,
		list_type,
		list,
		var,
		nb,
		add_format
	)

Definition at line 436 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 544 of file avfiltergraph.c.

#define CH_FRONT_PAIR (AV_CH_FRONT_LEFT | AV_CH_FRONT_RIGHT)

Definition at line 545 of file avfiltergraph.c.

#define CH_STEREO_PAIR (AV_CH_STEREO_LEFT | AV_CH_STEREO_RIGHT)

Definition at line 546 of file avfiltergraph.c.

#define CH_WIDE_PAIR (AV_CH_WIDE_LEFT | AV_CH_WIDE_RIGHT)

Definition at line 547 of file avfiltergraph.c.

#define CH_SIDE_PAIR (AV_CH_SIDE_LEFT | AV_CH_SIDE_RIGHT)

Definition at line 548 of file avfiltergraph.c.

#define CH_DIRECT_PAIR (AV_CH_SURROUND_DIRECT_LEFT | AV_CH_SURROUND_DIRECT_RIGHT)

Definition at line 549 of file avfiltergraph.c.

#define CH_BACK_PAIR (AV_CH_BACK_LEFT | AV_CH_BACK_RIGHT)

Definition at line 550 of file avfiltergraph.c.

Function Documentation

void ff_graph_thread_free ( AVFilterGraph * graph )

Definition at line 59 of file avfiltergraph.c.

Referenced by avfilter_graph_free().

int ff_graph_thread_init ( AVFilterGraph * graph )

Definition at line 63 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 89 of file avfiltergraph.c.

Referenced by avfilter_free().

static int graph_check_validity	(	AVFilterGraph *	graph,
		AVClass *	log_ctx
	)

static

Check for the validity of graph.

A graph is considered valid if all its input and output pads are connected.

Returns: 0 in case of success, a negative value otherwise

Definition at line 215 of file avfiltergraph.c.

Referenced by avfilter_graph_config().

static int graph_config_links	(	AVFilterGraph *	graph,
		AVClass *	log_ctx
	)

static

Configure all the links of graphctx.

Returns: 0 in case of success, a negative value otherwise

Definition at line 250 of file avfiltergraph.c.

Referenced by avfilter_graph_config().

static int query_formats	(	AVFilterGraph *	graph,
		AVClass *	log_ctx
	)

static

Definition at line 278 of file avfiltergraph.c.

Referenced by graph_config_formats().

static int pick_format ( AVFilterLink * link )

static

Definition at line 398 of file avfiltergraph.c.

Referenced by pick_formats().

static int reduce_formats_on_filter ( AVFilterContext * filter )

static

Definition at line 471 of file avfiltergraph.c.

Referenced by reduce_formats().

static void reduce_formats ( AVFilterGraph * graph )

static

Definition at line 485 of file avfiltergraph.c.

Referenced by graph_config_formats().

static void swap_samplerates_on_filter ( AVFilterContext * filter )

static

Definition at line 497 of file avfiltergraph.c.

Referenced by swap_samplerates().

static void swap_samplerates ( AVFilterGraph * graph )

static

Definition at line 536 of file avfiltergraph.c.

Referenced by graph_config_formats().

static void swap_channel_layouts_on_filter ( AVFilterContext * filter )

static

Definition at line 578 of file avfiltergraph.c.

Referenced by swap_channel_layouts().

static void swap_channel_layouts ( AVFilterGraph * graph )

static

Definition at line 651 of file avfiltergraph.c.

Referenced by graph_config_formats().

static void swap_sample_fmts_on_filter ( AVFilterContext * filter )

static

Definition at line 659 of file avfiltergraph.c.

Referenced by swap_sample_fmts().

static void swap_sample_fmts ( AVFilterGraph * graph )

static

Definition at line 719 of file avfiltergraph.c.

Referenced by graph_config_formats().

static int pick_formats ( AVFilterGraph * graph )

static

Definition at line 728 of file avfiltergraph.c.

Referenced by graph_config_formats().

static int graph_config_formats	(	AVFilterGraph *	graph,
		AVClass *	log_ctx
	)

static

Configure the formats of all the links in the graph.

Definition at line 748 of file avfiltergraph.c.

Referenced by avfilter_graph_config().

static int graph_insert_fifos	(	AVFilterGraph *	graph,
		AVClass *	log_ctx
	)

static

Definition at line 773 of file avfiltergraph.c.

Referenced by avfilter_graph_config().

Variable Documentation

const AVOption filtergraph_options[]

static

Initial value:

 {
    { "thread_type", "Allowed thread types", OFFSET(thread_type), AV_OPT_TYPE_FLAGS,
        { .i64 = AVFILTER_THREAD_SLICE }, 0, INT_MAX, FLAGS, "thread_type" },
        { "slice", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = AVFILTER_THREAD_SLICE }, .flags = FLAGS, .unit = "thread_type" },
    { "threads",     "Maximum number of threads", OFFSET(nb_threads),
        AV_OPT_TYPE_INT,   { .i64 = 0 }, 0, INT_MAX, FLAGS },
    { NULL },
}

Definition at line 42 of file avfiltergraph.c.

const AVClass filtergraph_class

static

Initial value:

 {
    .class_name = "AVFilterGraph",
    .item_name  = av_default_item_name,
    .version    = LIBAVUTIL_VERSION_INT,
    .option     = filtergraph_options,
}

Definition at line 51 of file avfiltergraph.c.

Referenced by avfilter_graph_alloc().

const uint64_t ch_subst[][2]

static

Initial value:

 {
    { CH_FRONT_PAIR,      CH_CENTER_PAIR     },
    { CH_FRONT_PAIR,      CH_WIDE_PAIR       },
    { CH_FRONT_PAIR,      AV_CH_FRONT_CENTER },
    { CH_CENTER_PAIR,     CH_FRONT_PAIR      },
    { CH_CENTER_PAIR,     CH_WIDE_PAIR       },
    { CH_CENTER_PAIR,     AV_CH_FRONT_CENTER },
    { CH_WIDE_PAIR,       CH_FRONT_PAIR      },
    { CH_WIDE_PAIR,       CH_CENTER_PAIR     },
    { CH_WIDE_PAIR,       AV_CH_FRONT_CENTER },
    { AV_CH_FRONT_CENTER, CH_FRONT_PAIR      },
    { AV_CH_FRONT_CENTER, CH_CENTER_PAIR     },
    { AV_CH_FRONT_CENTER, CH_WIDE_PAIR       },
    { CH_SIDE_PAIR,       CH_DIRECT_PAIR     },
    { CH_SIDE_PAIR,       CH_BACK_PAIR       },
    { CH_SIDE_PAIR,       AV_CH_BACK_CENTER  },
    { CH_BACK_PAIR,       CH_DIRECT_PAIR     },
    { CH_BACK_PAIR,       CH_SIDE_PAIR       },
    { CH_BACK_PAIR,       AV_CH_BACK_CENTER  },
    { AV_CH_BACK_CENTER,  CH_BACK_PAIR       },
    { AV_CH_BACK_CENTER,  CH_DIRECT_PAIR     },
    { AV_CH_BACK_CENTER,  CH_SIDE_PAIR       },
}

Definition at line 554 of file avfiltergraph.c.

Macros

Functions

Variables

Macro Definition Documentation

Function Documentation

Variable Documentation