FFmpeg
Data Structures | Macros | Functions | Variables
avf_concat.c File Reference
#include "libavutil/avstring.h"
#include "libavutil/channel_layout.h"
#include "libavutil/opt.h"
#include "avfilter.h"
#include "filters.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 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 AVFrameget_video_buffer (AVFilterLink *inlink, int w, int h)
 
static AVFrameget_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 AVFilter 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 35 of file avf_concat.c.

◆ OFFSET

#define OFFSET (   x)    offsetof(ConcatContext, x)

Definition at line 52 of file avf_concat.c.

◆ A

#define A   AV_OPT_FLAG_AUDIO_PARAM

Definition at line 53 of file avf_concat.c.

◆ F

Definition at line 54 of file avf_concat.c.

◆ V

#define V   AV_OPT_FLAG_VIDEO_PARAM

Definition at line 55 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 74 of file avf_concat.c.

◆ config_output()

static int config_output ( AVFilterLink outlink)
static

Definition at line 119 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 173 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 198 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 207 of file avf_concat.c.

Referenced by init().

◆ close_input()

static void close_input ( AVFilterContext ctx,
unsigned  in_no 
)
static

Definition at line 216 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 226 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 240 of file avf_concat.c.

Referenced by flush_segment().

◆ flush_segment()

static int flush_segment ( AVFilterContext ctx)
static

Definition at line 277 of file avf_concat.c.

Referenced by activate(), and process_command().

◆ init()

static av_cold int init ( AVFilterContext ctx)
static

Definition at line 304 of file avf_concat.c.

◆ uninit()

static av_cold void uninit ( AVFilterContext ctx)
static

Definition at line 347 of file avf_concat.c.

◆ activate()

static int activate ( AVFilterContext ctx)
static

Definition at line 354 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 434 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",
AV_OPT_TYPE_INT, { .i64 = 1 }, 0, INT_MAX, V|F },
{ "a", "specify the number of audio streams",
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 57 of file avf_concat.c.

◆ ff_avf_concat

const 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,
.activate = activate,
.priv_size = sizeof(ConcatContext),
.priv_class = &concat_class,
}

Definition at line 447 of file avf_concat.c.

activate
static int activate(AVFilterContext *ctx)
Definition: avf_concat.c:354
AVFILTER_FLAG_DYNAMIC_INPUTS
#define AVFILTER_FLAG_DYNAMIC_INPUTS
The number of the filter inputs is not determined just by AVFilter.inputs.
Definition: avfilter.h:110
query_formats
static int query_formats(AVFilterContext *ctx)
Definition: avf_concat.c:74
inputs
these buffered frames must be flushed immediately if a new input produces new the filter must not call request_frame to get more It must just process the frame or queue it The task of requesting more frames is left to the filter s request_frame method or the application If a filter has several inputs
Definition: filter_design.txt:243
AVMEDIA_TYPE_AUDIO
@ AVMEDIA_TYPE_AUDIO
Definition: avutil.h:202
outputs
static const AVFilterPad outputs[]
Definition: af_acontrast.c:192
nb_streams
static int nb_streams
Definition: ffprobe.c:289
V
#define V
Definition: avf_concat.c:55
NULL
#define NULL
Definition: coverity.c:32
A
#define A
Definition: avf_concat.c:53
AVFILTER_FLAG_DYNAMIC_OUTPUTS
#define AVFILTER_FLAG_DYNAMIC_OUTPUTS
The number of the filter outputs is not determined just by AVFilter.outputs.
Definition: avfilter.h:116
NULL_IF_CONFIG_SMALL
#define NULL_IF_CONFIG_SMALL(x)
Return NULL if CONFIG_SMALL is true, otherwise the argument without modification.
Definition: internal.h:117
process_command
static int process_command(AVFilterContext *ctx, const char *cmd, const char *args, char *res, int res_len, int flags)
Definition: avf_concat.c:434
F
#define F
Definition: avf_concat.c:54
concat_class
static const AVClass concat_class
Definition: concatdec.c:936
init
static av_cold int init(AVFilterContext *ctx)
Definition: avf_concat.c:304
ConcatContext
Definition: avf_concat.c:37
AV_OPT_TYPE_INT
@ AV_OPT_TYPE_INT
Definition: opt.h:224
uninit
static av_cold void uninit(AVFilterContext *ctx)
Definition: avf_concat.c:347
AVMEDIA_TYPE_VIDEO
@ AVMEDIA_TYPE_VIDEO
Definition: avutil.h:201
AV_OPT_TYPE_BOOL
@ AV_OPT_TYPE_BOOL
Definition: opt.h:241
flags
#define flags(name, subs,...)
Definition: cbs_av1.c:561
OFFSET
#define OFFSET(x)
Definition: avf_concat.c:52