#include "config.h"
#include <string.h>
#include "libavutil/avassert.h"
#include "libavutil/mem.h"
#include "libavutil/opt.h"
#include "bsf.h"
#include "bsf_internal.h"

Functions
static const char *	default_bsf_name (void *filter_ctx)

static void *	bsf_child_next (void obj, void prev)

int	ff_bsf_alloc (const AVBitStreamFilter filter, const char inst_name, AVBitStreamFilterContext **pctx)
	Allocate a new filter context and return it. More...

int	av_bsf_link (AVBitStreamFilterContext src, unsigned srcpad, AVBitStreamFilterContext dst, unsigned dstpad)
	Link two filters together. More...

static void	link_free (AVBitStreamFilterLink **plink)

static void	free_link (AVBitStreamFilterLink *link)

void	ff_bsf_free (AVBitStreamFilterContext *ctx)
	Free a filter context. More...

static int	bsf_opt_parse (void logctx, const AVClass priv_class, AVDictionary *options, const char args)
	Parse filter options into a dictionary. More...

int	av_bsf_init_dict (AVBitStreamFilterContext ctx, AVDictionary *options)
	Initialize a filter with the supplied dictionary of options. More...

int	av_bsf_init_str (AVBitStreamFilterContext ctx, const char args)
	Initialize a filter with the supplied parameters. More...

const char *	av_bsf_pad_get_name (const AVBitStreamFilterPad *pads, int pad_idx)
	Get the name of an AVBitStreamFilterPad. More...

enum AVCodecID *	av_bsf_pad_get_codec_ids (const AVBitStreamFilterPad *pads, int pad_idx)
	Get the codec ids supported by an AVBitStreamFilterPad. More...

static void	update_link_current_pts (BitStreamFilterLinkInternal *li, int64_t pts)

void	ff_bsf_set_ready (AVBitStreamFilterContext *filter, unsigned priority)
	Mark a filter ready and schedule it for activation. More...

static void	filter_unblock (AVBitStreamFilterContext *filter)
	Clear packet_blocked_in on all outputs. More...

void	ff_bsf_link_set_in_status (AVBitStreamFilterLink *link, int status, int64_t pts)

static void	link_set_out_status (AVBitStreamFilterLink *link, int status, int64_t pts)
	Set the status field of a link from the destination filter. More...

int	ff_bsf_config_links (AVBitStreamFilterContext *filter)

int	ff_bsf_request_packet (AVBitStreamFilterLink *link)

static int64_t	guess_status_pts (AVBitStreamFilterContext *ctx, int status, AVRational link_time_base)

static int	request_packet_to_filter (AVBitStreamFilterLink *link)

static int	default_filter_packet (AVBitStreamFilterLink link, AVPacket pkt)

static int	filter_packet_framed (AVBitStreamFilterLink link, AVPacket pkt)

int	ff_bsf_filter_packet (AVBitStreamFilterLink link, AVPacket pkt)
	Send a packet of data to the next filter. More...

static int	filter_packet_to_filter (AVBitStreamFilterLink *link)

static int	forward_status_change (AVBitStreamFilterContext filter, BitStreamFilterLinkInternal li_in)

static int	filter_activate_default (AVBitStreamFilterContext *ctx)

int	ff_bsf_activate (AVBitStreamFilterContext *ctx)

int	ff_bsf_inlink_acknowledge_status (AVBitStreamFilterLink link, int rstatus, int64_t *rpts)

size_t	ff_bsf_inlink_queued_packets (AVBitStreamFilterLink *link)

int	ff_bsf_inlink_check_available_packet (AVBitStreamFilterLink *link)

static void	consume_update (BitStreamFilterLinkInternal li, const AVPacket pkt)

int	ff_bsf_inlink_consume_packet (AVBitStreamFilterLink link, AVPacket *rpkt)

void	ff_bsf_inlink_request_packet (AVBitStreamFilterLink *link)

void	ff_bsf_inlink_set_status (AVBitStreamFilterLink *link, int status)

int	ff_bsf_outlink_get_status (AVBitStreamFilterLink *link)

int	ff_bsf_outlink_packet_wanted (AVBitStreamFilterLink *link)

Variables
static const AVClass	bitstreamfilter_class

const AVBitStreamFilterPad	ff_default_bsf_pad [1]

Function Documentation

◆ default_bsf_name()

static const char* default_bsf_name ( void * filter_ctx )

static

Definition at line 30 of file bitstreamfilter.c.

◆ bsf_child_next()

static void* bsf_child_next	(	void *	obj,
		void *	prev
	)

static

Definition at line 36 of file bitstreamfilter.c.

◆ ff_bsf_alloc()

int ff_bsf_alloc	(	const AVBitStreamFilter *	filter,
		const char *	inst_name,
		AVBitStreamFilterContext **	ctx
	)

Allocate a new filter context and return it.

Parameters

[in]	filter	what filter to create an instance of
[in]	inst_name	name to give to the new filter context
[out]	ctx	a pointer into which the pointer to the newly-allocated context will be written

Returns: 0 on success, an AVERROR code on failure

Definition at line 54 of file bitstreamfilter.c.

Referenced by av_bsf_graph_alloc_filter().

◆ link_free()

static void link_free ( AVBitStreamFilterLink ** plink )

static

Definition at line 198 of file bitstreamfilter.c.

Referenced by free_link().

◆ free_link()

static void free_link ( AVBitStreamFilterLink * link )

static

Definition at line 213 of file bitstreamfilter.c.

Referenced by ff_bsf_free().

◆ ff_bsf_free()

void ff_bsf_free ( AVBitStreamFilterContext * filter )

Free a filter context.

This will also remove the filter from its filtergraph's list of filters.

Parameters

filter the filter to free

Definition at line 226 of file bitstreamfilter.c.

Referenced by av_bsf_graph_create_filter(), and av_bsf_graph_free().

◆ bsf_opt_parse()

static int bsf_opt_parse	(	void *	logctx,
		const AVClass *	priv_class,
		AVDictionary **	options,
		const char *	args
	)

static

Parse filter options into a dictionary.

Parameters

logctx	context for logging
priv_class	a filter's private class for shorthand options or NULL
options	dictionary to store parsed options in
args	options string to parse

Returns: a non-negative number on success, a negative error code on failure

Definition at line 273 of file bitstreamfilter.c.

Referenced by av_bsf_init_str().

◆ update_link_current_pts()

static void update_link_current_pts	(	BitStreamFilterLinkInternal *	li,
		int64_t	pts
	)

static

Definition at line 390 of file bitstreamfilter.c.

Referenced by consume_update(), ff_bsf_inlink_acknowledge_status(), and link_set_out_status().

◆ ff_bsf_set_ready()

void ff_bsf_set_ready	(	AVBitStreamFilterContext *	filter,
		unsigned	priority
	)

Mark a filter ready and schedule it for activation.

This is automatically done when something happens to the filter (queued packet, status change, request on output). Filters implementing the activate callback can call it directly to perform one more round of processing later. It is also useful for filters reacting to external or asynchronous events.

Definition at line 400 of file bitstreamfilter.c.

Referenced by ff_bsf_filter_packet(), ff_bsf_inlink_request_packet(), ff_bsf_link_set_in_status(), ff_bsf_request_packet(), filter_packet_to_filter(), forward_status_change(), and link_set_out_status().

◆ filter_unblock()

static void filter_unblock ( AVBitStreamFilterContext * filter )

static

Clear packet_blocked_in on all outputs.

This is necessary whenever something changes on input.

Definition at line 410 of file bitstreamfilter.c.

Referenced by ff_bsf_filter_packet(), ff_bsf_link_set_in_status(), filter_packet_to_filter(), and link_set_out_status().

◆ ff_bsf_link_set_in_status()

void ff_bsf_link_set_in_status	(	AVBitStreamFilterLink *	link,
		int	status,
		int64_t	pts
	)

Definition at line 420 of file bitstreamfilter.c.

Referenced by activate(), av_bsf_source_close(), packetsync_eof(), and request_packet_to_filter().

◆ link_set_out_status()

static void link_set_out_status	(	AVBitStreamFilterLink *	link,
		int	status,
		int64_t	pts
	)

static

Set the status field of a link from the destination filter.

The pts should probably be left unset (AV_NOPTS_VALUE).

Definition at line 439 of file bitstreamfilter.c.

Referenced by ff_bsf_inlink_set_status(), ff_bsf_request_packet(), filter_packet_to_filter(), and forward_status_change().

◆ ff_bsf_config_links()

int ff_bsf_config_links ( AVBitStreamFilterContext * filter )

Definition at line 452 of file bitstreamfilter.c.

Referenced by ff_bsf_config_links(), and graph_config_links().

◆ ff_bsf_request_packet()

int ff_bsf_request_packet ( AVBitStreamFilterLink * link )

Definition at line 568 of file bitstreamfilter.c.

Referenced by request_packet_to_filter().

◆ guess_status_pts()

static int64_t guess_status_pts	(	AVBitStreamFilterContext *	ctx,
		int	status,
		AVRational	link_time_base
	)

static

Definition at line 593 of file bitstreamfilter.c.

Referenced by request_packet_to_filter().

◆ request_packet_to_filter()

static int request_packet_to_filter ( AVBitStreamFilterLink * link )

static

Definition at line 617 of file bitstreamfilter.c.

Referenced by filter_activate_default(), and forward_status_change().

◆ default_filter_packet()

static int default_filter_packet	(	AVBitStreamFilterLink *	link,
		AVPacket *	pkt
	)

static

Definition at line 637 of file bitstreamfilter.c.

Referenced by filter_packet_framed().

◆ filter_packet_framed()

static int filter_packet_framed	(	AVBitStreamFilterLink *	link,
		AVPacket *	pkt
	)

static

Definition at line 642 of file bitstreamfilter.c.

Referenced by filter_packet_to_filter().

◆ ff_bsf_filter_packet()

int ff_bsf_filter_packet	(	AVBitStreamFilterLink *	link,
		AVPacket *	pkt
	)

Send a packet of data to the next filter.

Parameters

link	the output link over which the data is being sent
pkt	a reference to the buffer of data being sent. The receiving filter will free this reference when it no longer needs it or pass it on to the next filter.

Returns: >= 0 on success, a negative AVERROR on error. The receiving filter is responsible for unreferencing pkt in case of error.

Definition at line 666 of file bitstreamfilter.c.

Referenced by av_bsf_source_add_packet(), default_filter_packet(), and lcevc_merge().

◆ filter_packet_to_filter()

static int filter_packet_to_filter ( AVBitStreamFilterLink * link )

static

Definition at line 687 of file bitstreamfilter.c.

Referenced by filter_activate_default().

◆ forward_status_change()

static int forward_status_change	(	AVBitStreamFilterContext *	filter,
		BitStreamFilterLinkInternal *	li_in
	)

static

Definition at line 719 of file bitstreamfilter.c.

Referenced by filter_activate_default().

◆ filter_activate_default()

static int filter_activate_default ( AVBitStreamFilterContext * ctx )

static

Definition at line 753 of file bitstreamfilter.c.

Referenced by ff_bsf_activate().

◆ ff_bsf_activate()

int ff_bsf_activate ( AVBitStreamFilterContext * ctx )

Definition at line 797 of file bitstreamfilter.c.

Referenced by ff_bsf_graph_run_once().

◆ ff_bsf_inlink_acknowledge_status()

int ff_bsf_inlink_acknowledge_status	(	AVBitStreamFilterLink *	link,
		int *	rstatus,
		int64_t *	rpts
	)

Definition at line 810 of file bitstreamfilter.c.

Referenced by av_bsf_sink_get_packet(), and consume_from_fifos().

◆ ff_bsf_inlink_queued_packets()

size_t ff_bsf_inlink_queued_packets ( AVBitStreamFilterLink * link )

Definition at line 826 of file bitstreamfilter.c.

◆ ff_bsf_inlink_check_available_packet()

int ff_bsf_inlink_check_available_packet ( AVBitStreamFilterLink * link )

Definition at line 832 of file bitstreamfilter.c.

◆ consume_update()

static void consume_update	(	BitStreamFilterLinkInternal *	li,
		const AVPacket *	pkt
	)

static

Definition at line 838 of file bitstreamfilter.c.

Referenced by ff_bsf_inlink_consume_packet().

◆ ff_bsf_inlink_consume_packet()

int ff_bsf_inlink_consume_packet	(	AVBitStreamFilterLink *	link,
		AVPacket **	rpkt
	)

Definition at line 844 of file bitstreamfilter.c.

Referenced by av_bsf_sink_get_packet(), consume_from_fifos(), and filter_packet_to_filter().

◆ ff_bsf_inlink_request_packet()

void ff_bsf_inlink_request_packet ( AVBitStreamFilterLink * link )

Definition at line 866 of file bitstreamfilter.c.

Referenced by av_bsf_sink_get_packet(), consume_from_fifos(), and filter_activate_default().

◆ ff_bsf_inlink_set_status()

void ff_bsf_inlink_set_status	(	AVBitStreamFilterLink *	link,
		int	status
	)

Definition at line 875 of file bitstreamfilter.c.

Referenced by ff_packetsync_activate(), and filter_activate_default().

◆ ff_bsf_outlink_get_status()

int ff_bsf_outlink_get_status ( AVBitStreamFilterLink * link )

Definition at line 895 of file bitstreamfilter.c.

Referenced by activate(), av_bsf_source_get_status(), ff_packetsync_activate(), and filter_activate_default().

◆ ff_bsf_outlink_packet_wanted()

int ff_bsf_outlink_packet_wanted ( AVBitStreamFilterLink * link )

Definition at line 901 of file bitstreamfilter.c.

Referenced by consume_from_fifos().

Variable Documentation

◆ bitstreamfilter_class

const AVClass bitstreamfilter_class

static

Initial value:

= {
    .class_name = "AVBitStreamFilterContext",
    .item_name  = default_bsf_name,
    .version    = LIBAVUTIL_VERSION_INT,
    .category   = AV_CLASS_CATEGORY_BITSTREAM_FILTER,
    .child_next = bsf_child_next,
    .child_class_iterate = ff_bsf_child_class_iterate,
    .state_flags_offset = 0x42,
}

Definition at line 44 of file bitstreamfilter.c.

Referenced by ff_bsf_alloc().

◆ ff_default_bsf_pad

const AVBitStreamFilterPad ff_default_bsf_pad[1]

Initial value:

= {
    {
        .name = "default",
    }
}

Definition at line 907 of file bitstreamfilter.c.

Functions

Variables

Function Documentation

◆ default_bsf_name()

◆ bsf_child_next()

◆ ff_bsf_alloc()

◆ link_free()

◆ free_link()

◆ ff_bsf_free()

◆ bsf_opt_parse()

◆ update_link_current_pts()

◆ ff_bsf_set_ready()

◆ filter_unblock()

◆ ff_bsf_link_set_in_status()

◆ link_set_out_status()

◆ ff_bsf_config_links()

◆ ff_bsf_request_packet()

◆ guess_status_pts()

◆ request_packet_to_filter()

◆ default_filter_packet()

◆ filter_packet_framed()

◆ ff_bsf_filter_packet()

◆ filter_packet_to_filter()

◆ forward_status_change()

◆ filter_activate_default()

◆ ff_bsf_activate()

◆ ff_bsf_inlink_acknowledge_status()

◆ ff_bsf_inlink_queued_packets()

◆ ff_bsf_inlink_check_available_packet()

◆ consume_update()

◆ ff_bsf_inlink_consume_packet()

◆ ff_bsf_inlink_request_packet()

◆ ff_bsf_inlink_set_status()

◆ ff_bsf_outlink_get_status()

◆ ff_bsf_outlink_packet_wanted()

Variable Documentation

◆ bitstreamfilter_class

◆ ff_default_bsf_pad