source.c File Reference

Packet source. More...

#include <float.h>
#include "libavutil/container_fifo.h"
#include "libavutil/opt.h"
#include "libavcodec/bsf.h"
#include "libavcodec/bsf_internal.h"
#include "libavcodec/packet.h"
#include "libavcodec/packet_internal.h"

Go to the source code of this file.

Data Structures
struct	SourceContext

Macros
#define	OFFSET(x)
#define	FLAGS   (AV_OPT_FLAG_BSF_PARAM|AV_OPT_FLAG_AUDIO_PARAM|AV_OPT_FLAG_VIDEO_PARAM)

Functions
int	av_bsf_source_parameters_set (AVBitStreamFilterContext *ctx, const AVCodecParameters *par)
	Initialize the source filter with the provided parameters.
static int	push_packet (AVBitStreamFilterGraph *graph)
int attribute_align_arg	av_bsf_source_add_packet (AVBitStreamFilterContext *ctx, AVPacket *pkt, int flags)
	Add a packet to the buffer source.
int	av_bsf_source_close (AVBitStreamFilterContext *ctx, int64_t pts, unsigned flags)
	Close the source after EOF.
int	av_bsf_source_get_status (AVBitStreamFilterContext *ctx)
	Returns 0 or a negative AVERROR code.
static av_cold int	preinit (AVBitStreamFilterContext *ctx)
static av_cold int	init (AVBitStreamFilterContext *ctx)
unsigned	ff_bsf_source_get_nb_failed_requests (const AVBitStreamFilterContext *buffer_src)
	Get the number of failed requests.
	BSF_DEFINE_CLASS (buffer)
static av_cold void	uninit (AVBitStreamFilterContext *ctx)
static int	config_props (AVBitStreamFilterLink *link)
static int	activate (AVBitStreamFilterContext *ctx)

Variables
static const AVOption	buffer_options []
static const AVBitStreamFilterPad	source_outputs []
const FFBitStreamFilter	ff_source_bsf

Detailed Description

Packet source.

Heavily based on libavfilter/buffersrc.c

Definition in file source.c.

Macro Definition Documentation

OFFSET

#define OFFSET

(

x

)

Value:

offsetof(SourceContext, x)

Definition at line 166 of file source.c.

FLAGS

#define FLAGS   (AV_OPT_FLAG_BSF_PARAM|AV_OPT_FLAG_AUDIO_PARAM|AV_OPT_FLAG_VIDEO_PARAM)

Definition at line 167 of file source.c.

Function Documentation

push_packet()

static int push_packet ( AVBitStreamFilterGraph * graph )

static

Definition at line 53 of file source.c.

Referenced by av_bsf_source_add_packet().

preinit()

static av_cold int preinit ( AVBitStreamFilterContext * ctx )

static

Definition at line 137 of file source.c.

init()

static av_cold int init ( AVBitStreamFilterContext * ctx )

static

Definition at line 148 of file source.c.

ff_bsf_source_get_nb_failed_requests()

unsigned ff_bsf_source_get_nb_failed_requests

(

const AVBitStreamFilterContext *

src

)

Get the number of failed requests.

A failed request is when the request_packet method is called while no packet is present in the buffer. The number is reset when a packet is added.

Definition at line 161 of file source.c.

Referenced by av_bsf_graph_source_needs_input().

BSF_DEFINE_CLASS()

BSF_DEFINE_CLASS

(

buffer

)

uninit()

static av_cold void uninit ( AVBitStreamFilterContext * ctx )

static

Definition at line 175 of file source.c.

config_props()

static int config_props ( AVBitStreamFilterLink * link )

static

Definition at line 181 of file source.c.

activate()

static int activate ( AVBitStreamFilterContext * ctx )

static

Definition at line 189 of file source.c.

Variable Documentation

buffer_options

const AVOption buffer_options[]

static

Initial value:

= {
    { "time_base", NULL, OFFSET(time_base), AV_OPT_TYPE_RATIONAL, { .dbl = 0 }, 0, DBL_MAX, FLAGS },
    { NULL },
}

Definition at line 168 of file source.c.

source_outputs

const AVBitStreamFilterPad source_outputs[]

static

Initial value:

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

Definition at line 207 of file source.c.

ff_source_bsf

const FFBitStreamFilter ff_source_bsf

Initial value:

= {
    .p.name        = "source",
    .p.priv_class  = &buffer_class,
    .priv_data_size = sizeof(SourceContext),
    .activate  = activate,
    .preinit   = preinit,
    .init2     = init,
    .uninit    = uninit,
 
    BSFILTER_OUTPUTS(source_outputs),
}

Definition at line 214 of file source.c.