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)

Variables
static const AVOption	concat_options []
AVFilter	avfilter_avf_concat

Detailed Description

concat audio-video filter

Definition in file avf_concat.c.

Macro Definition Documentation

#define FF_BUFQUEUE_SIZE   256

Definition at line 31 of file avf_concat.c.

#define TYPE_ALL   2

Definition at line 37 of file avf_concat.c.

Referenced by init(), and query_formats().

#define OFFSET

(

x

)

offsetof(ConcatContext, x)

Definition at line 55 of file avf_concat.c.

#define A   AV_OPT_FLAG_AUDIO_PARAM

Definition at line 56 of file avf_concat.c.

#define F   AV_OPT_FLAG_FILTERING_PARAM

Definition at line 57 of file avf_concat.c.

#define V   AV_OPT_FLAG_VIDEO_PARAM

Definition at line 58 of file avf_concat.c.

Function Documentation

AVFILTER_DEFINE_CLASS

(

concat

)

static int query_formats ( AVFilterContext *  ctx )

static

Definition at line 77 of file avf_concat.c.

static int config_output ( AVFilterLink *  outlink )

static

Definition at line 121 of file avf_concat.c.

Referenced by init().

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

static

Definition at line 162 of file avf_concat.c.

Referenced by decode_thread(), flush_segment(), and process_frame().

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

static

Definition at line 187 of file avf_concat.c.

Referenced by filter_frame().

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().

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

static

Definition at line 214 of file avf_concat.c.

Referenced by init().

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

static

Definition at line 223 of file avf_concat.c.

Referenced by init().

static void close_input ( AVFilterContext *  ctx, unsigned  in_no  )

static

Definition at line 228 of file avf_concat.c.

Referenced by request_frame().

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

static

Definition at line 238 of file avf_concat.c.

Referenced by flush_segment().

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

static

Definition at line 252 of file avf_concat.c.

Referenced by flush_segment().

static int flush_segment ( AVFilterContext *  ctx )

static

Definition at line 286 of file avf_concat.c.

Referenced by request_frame().

static int request_frame ( AVFilterLink *  outlink )

static

Definition at line 323 of file avf_concat.c.

Referenced by init().

static av_cold int init ( AVFilterContext *  ctx )

static

Definition at line 361 of file avf_concat.c.

static av_cold void uninit ( AVFilterContext *  ctx )

static

Definition at line 401 of file avf_concat.c.

Variable Documentation

const AVOption concat_options[]

static

Initial value:

= {
    { "n", "specify the number of segments", OFFSET(nb_segments),
      AV_OPT_TYPE_INT, { .i64 = 2 }, 2, 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_INT, { .i64 = 0 }, 0, INT_MAX, V|A|F},
    { NULL }
}

Definition at line 60 of file avf_concat.c.

AVFilter avfilter_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,
}

Definition at line 415 of file avf_concat.c.