avf_concat.c File Reference

concat audio-video filter More...

#include "libavutil/avstring.h"
#include "libavutil/channel_layout.h"
#include "libavutil/mem.h"
#include "libavutil/opt.h"
#include "avfilter.h"
#include "filters.h"
#include "formats.h"
#include "video.h"
#include "audio.h"

Go to the source code of this file.

Data Structures
struct	ConcatContext
struct	ConcatContext::concat_in

Macros
#define	TYPE_ALL   2
#define	OFFSET(x)
#define	A   AV_OPT_FLAG_AUDIO_PARAM
#define	F   AV_OPT_FLAG_FILTERING_PARAM
#define	V   AV_OPT_FLAG_VIDEO_PARAM

Functions
	AVFILTER_DEFINE_CLASS (concat)
static int	query_formats (const AVFilterContext *ctx, AVFilterFormatsConfig **cfg_in, AVFilterFormatsConfig **cfg_out)
static int	config_output (AVFilterLink *outlink)
static int	push_frame (AVFilterContext *ctx, unsigned in_no, AVFrame *buf)
static AVFrame *	get_video_buffer (AVFilterLink *inlink, int w, int h)
static AVFrame *	get_audio_buffer (AVFilterLink *inlink, int nb_samples)
static void	close_input (AVFilterContext *ctx, unsigned in_no)
static void	find_next_delta_ts (AVFilterContext *ctx, int64_t *seg_delta)
static int	send_silence (AVFilterContext *ctx, unsigned in_no, unsigned out_no, int64_t seg_delta)
static int	flush_segment (AVFilterContext *ctx)
static av_cold int	init (AVFilterContext *ctx)
static av_cold void	uninit (AVFilterContext *ctx)
static int	activate (AVFilterContext *ctx)
static int	process_command (AVFilterContext *ctx, const char *cmd, const char *args, char *res, int res_len, int flags)

Variables
static const AVOption	concat_options []
const FFFilter	ff_avf_concat

Detailed Description

concat audio-video filter

Definition in file avf_concat.c.

Macro Definition Documentation

TYPE_ALL

#define TYPE_ALL   2

Definition at line 36 of file avf_concat.c.

Referenced by init(), and query_formats().

OFFSET

#define OFFSET

(

x

)

Value:

offsetof(ConcatContext, x)

Definition at line 53 of file avf_concat.c.

A

#define A   AV_OPT_FLAG_AUDIO_PARAM

Definition at line 54 of file avf_concat.c.

F

#define F   AV_OPT_FLAG_FILTERING_PARAM

Definition at line 55 of file avf_concat.c.

V

#define V   AV_OPT_FLAG_VIDEO_PARAM

Definition at line 56 of file avf_concat.c.

Function Documentation

AVFILTER_DEFINE_CLASS()

AVFILTER_DEFINE_CLASS

(

concat

)

query_formats()

static int query_formats ( const AVFilterContext * ctx, AVFilterFormatsConfig ** cfg_in, AVFilterFormatsConfig ** cfg_out )

static

Definition at line 75 of file avf_concat.c.

config_output()

static int config_output ( AVFilterLink * outlink )

static

Definition at line 122 of file avf_concat.c.

push_frame()

static int push_frame ( AVFilterContext * ctx, unsigned in_no, AVFrame * buf )

static

Definition at line 179 of file avf_concat.c.

Referenced by activate().

get_video_buffer()

static AVFrame * get_video_buffer ( AVFilterLink * inlink, int w, int h )

static

Definition at line 205 of file avf_concat.c.

Referenced by ff_get_video_buffer(), and init().

get_audio_buffer()

static AVFrame * get_audio_buffer ( AVFilterLink * inlink, int nb_samples )

static

Definition at line 214 of file avf_concat.c.

Referenced by init().

close_input()

static void close_input ( AVFilterContext * ctx, unsigned in_no )

static

Definition at line 223 of file avf_concat.c.

Referenced by activate().

find_next_delta_ts()

static void find_next_delta_ts ( AVFilterContext * ctx, int64_t * seg_delta )

static

Definition at line 233 of file avf_concat.c.

Referenced by flush_segment().

send_silence()

static int send_silence ( AVFilterContext * ctx, unsigned in_no, unsigned out_no, int64_t seg_delta )

static

Definition at line 247 of file avf_concat.c.

Referenced by flush_segment().

flush_segment()

static int flush_segment ( AVFilterContext * ctx )

static

Definition at line 284 of file avf_concat.c.

Referenced by activate(), and process_command().

init()

static av_cold int init ( AVFilterContext * ctx )

static

Definition at line 311 of file avf_concat.c.

uninit()

static av_cold void uninit ( AVFilterContext * ctx )

static

Definition at line 354 of file avf_concat.c.

activate()

static int activate ( AVFilterContext * ctx )

static

Definition at line 361 of file avf_concat.c.

process_command()

static int process_command ( AVFilterContext * ctx, const char * cmd, const char * args, char * res, int res_len, int flags )

static

Definition at line 441 of file avf_concat.c.

Variable Documentation

concat_options

const AVOption concat_options[]

static

Initial value:

= {
    { "n", "specify the number of segments", OFFSET(nb_segments),
      AV_OPT_TYPE_INT, { .i64 = 2 }, 1, INT_MAX, V|A|F},
    { "v", "specify the number of video streams",
      OFFSET(nb_streams[AVMEDIA_TYPE_VIDEO]),
      AV_OPT_TYPE_INT, { .i64 = 1 }, 0, INT_MAX, V|F },
    { "a", "specify the number of audio streams",
      OFFSET(nb_streams[AVMEDIA_TYPE_AUDIO]),
      AV_OPT_TYPE_INT, { .i64 = 0 }, 0, INT_MAX, A|F},
    { "unsafe", "enable unsafe mode",
      OFFSET(unsafe),
      AV_OPT_TYPE_BOOL, { .i64 = 0 }, 0, 1, V|A|F},
    { NULL }
}

Definition at line 58 of file avf_concat.c.

ff_avf_concat

const FFFilter ff_avf_concat

Initial value:

= {
    .p.name        = "concat",
    .p.description = NULL_IF_CONFIG_SMALL("Concatenate audio and video streams."),
    .p.inputs      = NULL,
    .p.outputs     = NULL,
    .p.priv_class  = &concat_class,
    .p.flags       = AVFILTER_FLAG_DYNAMIC_INPUTS | AVFILTER_FLAG_DYNAMIC_OUTPUTS,
    .init          = init,
    .uninit        = uninit,
    .activate      = activate,
    .priv_size     = sizeof(ConcatContext),
    FILTER_QUERY_FUNC2(query_formats),
    .process_command = process_command,
}

Definition at line 454 of file avf_concat.c.