FFmpeg  4.3
Data Structures | Macros | Functions | Variables
af_adelay.c File Reference
#include "libavutil/avstring.h"
#include "libavutil/eval.h"
#include "libavutil/opt.h"
#include "libavutil/samplefmt.h"
#include "avfilter.h"
#include "audio.h"
#include "filters.h"
#include "internal.h"

Go to the source code of this file.

Data Structures

struct  ChanDelay
 
struct  AudioDelayContext
 

Macros

#define OFFSET(x)   offsetof(AudioDelayContext, x)
 
#define A   AV_OPT_FLAG_AUDIO_PARAM|AV_OPT_FLAG_FILTERING_PARAM
 
#define DELAY(name, type, fill)
 

Functions

 AVFILTER_DEFINE_CLASS (adelay)
 
static int query_formats (AVFilterContext *ctx)
 
static int config_input (AVFilterLink *inlink)
 
static int filter_frame (AVFilterLink *inlink, AVFrame *frame)
 
static int activate (AVFilterContext *ctx)
 
static av_cold void uninit (AVFilterContext *ctx)
 

Variables

static const AVOption adelay_options []
 
static const AVFilterPad adelay_inputs []
 
static const AVFilterPad adelay_outputs []
 
AVFilter ff_af_adelay
 

Macro Definition Documentation

◆ OFFSET

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

Definition at line 53 of file af_adelay.c.

◆ A

Definition at line 54 of file af_adelay.c.

◆ DELAY

#define DELAY (   name,
  type,
  fill 
)
Value:
static void delay_channel_## name ##p(ChanDelay *d, int nb_samples, \
const uint8_t *ssrc, uint8_t *ddst) \
{ \
const type *src = (type *)ssrc; \
type *dst = (type *)ddst; \
type *samples = (type *)d->samples; \
\
while (nb_samples) { \
if (d->delay_index < d->delay) { \
const int len = FFMIN(nb_samples, d->delay - d->delay_index); \
\
memcpy(&samples[d->delay_index], src, len * sizeof(type)); \
memset(dst, fill, len * sizeof(type)); \
d->delay_index += len; \
src += len; \
dst += len; \
nb_samples -= len; \
} else { \
*dst = samples[d->index]; \
samples[d->index] = *src; \
nb_samples--; \
d->index++; \
src++, dst++; \
d->index = d->index >= d->delay ? 0 : d->index; \
} \
} \
}

Definition at line 95 of file af_adelay.c.

Function Documentation

◆ AVFILTER_DEFINE_CLASS()

AVFILTER_DEFINE_CLASS ( adelay  )

◆ query_formats()

static int query_formats ( AVFilterContext ctx)
static

Definition at line 64 of file af_adelay.c.

◆ config_input()

static int config_input ( AVFilterLink inlink)
static

Definition at line 130 of file af_adelay.c.

◆ filter_frame()

static int filter_frame ( AVFilterLink inlink,
AVFrame frame 
)
static

Definition at line 215 of file af_adelay.c.

Referenced by activate().

◆ activate()

static int activate ( AVFilterContext ctx)
static

Definition at line 249 of file af_adelay.c.

◆ uninit()

static av_cold void uninit ( AVFilterContext ctx)
static

Definition at line 320 of file af_adelay.c.

Variable Documentation

◆ adelay_options

const AVOption adelay_options[]
static
Initial value:
= {
{ "delays", "set list of delays for each channel", OFFSET(delays), AV_OPT_TYPE_STRING, {.str=NULL}, 0, 0, A },
{ "all", "use last available delay for remained channels", OFFSET(all), AV_OPT_TYPE_BOOL, {.i64=0}, 0, 1, A },
{ NULL }
}

Definition at line 56 of file af_adelay.c.

◆ adelay_inputs

const AVFilterPad adelay_inputs[]
static
Initial value:
= {
{
.name = "default",
.config_props = config_input,
},
{ NULL }
}

Definition at line 331 of file af_adelay.c.

◆ adelay_outputs

const AVFilterPad adelay_outputs[]
static
Initial value:
= {
{
.name = "default",
},
{ NULL }
}

Definition at line 340 of file af_adelay.c.

◆ ff_af_adelay

AVFilter ff_af_adelay
Initial value:
= {
.name = "adelay",
.description = NULL_IF_CONFIG_SMALL("Delay one or more audio channels."),
.query_formats = query_formats,
.priv_size = sizeof(AudioDelayContext),
.priv_class = &adelay_class,
}

Definition at line 348 of file af_adelay.c.

name
it s the only field you need to keep assuming you have a context There is some magic you don t need to care about around this just let it vf default minimum maximum flags name is the option name
Definition: writing_filters.txt:88
ChanDelay
Definition: af_adelay.c:30
samples
FFmpeg Automated Testing Environment ************************************Introduction Using FATE from your FFmpeg source directory Submitting the results to the FFmpeg result aggregation server Uploading new samples to the fate suite FATE makefile targets and variables Makefile targets Makefile variables Examples Introduction **************FATE is an extended regression suite on the client side and a means for results aggregation and presentation on the server side The first part of this document explains how you can use FATE from your FFmpeg source directory to test your ffmpeg binary The second part describes how you can run FATE to submit the results to FFmpeg’s FATE server In any way you can have a look at the publicly viewable FATE results by visiting this as it can be seen if some test on some platform broke with their recent contribution This usually happens on the platforms the developers could not test on The second part of this document describes how you can run FATE to submit your results to FFmpeg’s FATE server If you want to submit your results be sure to check that your combination of OS and compiler is not already listed on the above mentioned website In the third part you can find a comprehensive listing of FATE makefile targets and variables Using FATE from your FFmpeg source directory **********************************************If you want to run FATE on your machine you need to have the samples in place You can get the samples via the build target fate rsync Use this command from the top level source this will cause FATE to fail NOTE To use a custom wrapper to run the pass ‘ target exec’ to ‘configure’ or set the TARGET_EXEC Make variable Submitting the results to the FFmpeg result aggregation server ****************************************************************To submit your results to the server you should run fate through the shell script ‘tests fate sh’ from the FFmpeg sources This script needs to be invoked with a configuration file as its first argument tests fate sh path to fate_config A configuration file template with comments describing the individual configuration variables can be found at ‘doc fate_config sh template’ Create a configuration that suits your based on the configuration template The ‘slot’ configuration variable can be any string that is not yet but it is suggested that you name it adhering to the following pattern ‘ARCH OS COMPILER COMPILER VERSION’ The configuration file itself will be sourced in a shell therefore all shell features may be used This enables you to setup the environment as you need it for your build For your first test runs the ‘fate_recv’ variable should be empty or commented out This will run everything as normal except that it will omit the submission of the results to the server The following files should be present in $workdir as specified in the configuration it may help to try out the ‘ssh’ command with one or more ‘ v’ options You should get detailed output concerning your SSH configuration and the authentication process The only thing left is to automate the execution of the fate sh script and the synchronisation of the samples directory Uploading new samples to the fate suite *****************************************If you need a sample uploaded send a mail to samples request This is for developers who have an account on the fate suite server If you upload new samples
Definition: fate.txt:139
query_formats
static int query_formats(AVFilterContext *ctx)
Definition: af_adelay.c:64
OFFSET
#define OFFSET(x)
Definition: af_adelay.c:53
AudioDelayContext
Definition: af_adelay.c:37
type
it s the only field you need to keep assuming you have a context There is some magic you don t need to care about around this just let it vf type
Definition: writing_filters.txt:86
activate
static int activate(AVFilterContext *ctx)
Definition: af_adelay.c:249
config_input
static int config_input(AVFilterLink *inlink)
Definition: af_adelay.c:130
AVMEDIA_TYPE_AUDIO
@ AVMEDIA_TYPE_AUDIO
Definition: avutil.h:202
outputs
static const AVFilterPad outputs[]
Definition: af_acontrast.c:203
NULL
#define NULL
Definition: coverity.c:32
adelay_outputs
static const AVFilterPad adelay_outputs[]
Definition: af_adelay.c:340
A
#define A
Definition: af_adelay.c:54
src
#define src
Definition: vp8dsp.c:254
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
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:186
FFMIN
#define FFMIN(a, b)
Definition: common.h:96
uint8_t
uint8_t
Definition: audio_convert.c:194
len
int len
Definition: vorbis_enc_data.h:452
adelay_inputs
static const AVFilterPad adelay_inputs[]
Definition: af_adelay.c:331
AV_OPT_TYPE_BOOL
@ AV_OPT_TYPE_BOOL
Definition: opt.h:240
uninit
static av_cold void uninit(AVFilterContext *ctx)
Definition: af_adelay.c:320
AVFILTER_FLAG_SUPPORT_TIMELINE_INTERNAL
#define AVFILTER_FLAG_SUPPORT_TIMELINE_INTERNAL
Same as AVFILTER_FLAG_SUPPORT_TIMELINE_GENERIC, except that the filter will have its filter_frame() c...
Definition: avfilter.h:133
flags
#define flags(name, subs,...)
Definition: cbs_av1.c:564
AV_OPT_TYPE_STRING
@ AV_OPT_TYPE_STRING
Definition: opt.h:227