avf_concat.c File Reference

concat audio-video filter More...

#include "libavutil/avassert.h"
#include "libavutil/avstring.h"
#include "libavutil/channel_layout.h"
#include "libavutil/opt.h"
#include "avfilter.h"
#include "bufferqueue.h"
#include "internal.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	FF_BUFQUEUE_SIZE   256
#define	TYPE_ALL   2
#define	OFFSET(x)   offsetof(ConcatContext, 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 (AVFilterContext *ctx)
static int	config_output (AVFilterLink *outlink)
static int	push_frame (AVFilterContext *ctx, unsigned in_no, AVFrame *buf)
static int	process_frame (AVFilterLink *inlink, AVFrame *buf)
static AVFrame *	get_video_buffer (AVFilterLink *inlink, int w, int h)
static AVFrame *	get_audio_buffer (AVFilterLink *inlink, int nb_samples)
static int	filter_frame (AVFilterLink *inlink, AVFrame *buf)
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 int	request_frame (AVFilterLink *outlink)
static av_cold int	init (AVFilterContext *ctx)
static av_cold void	uninit (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 []
AVFilter	ff_avf_concat

Detailed Description

concat audio-video filter

Definition in file avf_concat.c.

Macro Definition Documentation

FF_BUFQUEUE_SIZE

#define FF_BUFQUEUE_SIZE   256

Definition at line 31 of file avf_concat.c.

TYPE_ALL

#define TYPE_ALL   2

Definition at line 37 of file avf_concat.c.

Referenced by init(), and query_formats().

OFFSET

#define OFFSET

(

x

)

offsetof(ConcatContext, x)

Definition at line 55 of file avf_concat.c.

A

#define A   AV_OPT_FLAG_AUDIO_PARAM

Definition at line 56 of file avf_concat.c.

F

#define F   AV_OPT_FLAG_FILTERING_PARAM

Definition at line 57 of file avf_concat.c.

V

#define V   AV_OPT_FLAG_VIDEO_PARAM

Definition at line 58 of file avf_concat.c.

Function Documentation

AVFILTER_DEFINE_CLASS()

AVFILTER_DEFINE_CLASS

(

concat

)

query_formats()

static int query_formats ( AVFilterContext *  ctx )

static

Definition at line 77 of file avf_concat.c.

config_output()

static int config_output ( AVFilterLink *  outlink )

static

Definition at line 122 of file avf_concat.c.

Referenced by init().

push_frame()

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

static

Definition at line 163 of file avf_concat.c.

Referenced by flush_segment(), and process_frame().

process_frame()

static int process_frame ( AVFilterLink *  inlink, AVFrame *  buf  )

static

Definition at line 188 of file avf_concat.c.

Referenced by filter_frame().

get_video_buffer()

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

static

Definition at line 206 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 215 of file avf_concat.c.

Referenced by init().

filter_frame()

static int filter_frame ( AVFilterLink *  inlink, AVFrame *  buf  )

static

Definition at line 224 of file avf_concat.c.

Referenced by init().

close_input()

static void close_input ( AVFilterContext *  ctx, unsigned  in_no  )

static

Definition at line 229 of file avf_concat.c.

Referenced by request_frame().

find_next_delta_ts()

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

static

Definition at line 239 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 253 of file avf_concat.c.

Referenced by flush_segment().

flush_segment()

static int flush_segment ( AVFilterContext *  ctx )

static

Definition at line 286 of file avf_concat.c.

Referenced by process_command(), and request_frame().

request_frame()

static int request_frame ( AVFilterLink *  outlink )

static

Definition at line 323 of file avf_concat.c.

Referenced by init().

init()

static av_cold int init ( AVFilterContext *  ctx )

static

Definition at line 360 of file avf_concat.c.

uninit()

static av_cold void uninit ( AVFilterContext *  ctx )

static

Definition at line 407 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 421 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 60 of file avf_concat.c.

ff_avf_concat

AVFilter ff_avf_concat

Initial value:

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

Definition at line 434 of file avf_concat.c.