FFmpeg  4.3
Data Structures | Macros | Functions | Variables
vsrc_cellauto.c File Reference
#include "libavutil/file.h"
#include "libavutil/internal.h"
#include "libavutil/lfg.h"
#include "libavutil/opt.h"
#include "libavutil/parseutils.h"
#include "libavutil/random_seed.h"
#include "libavutil/avstring.h"
#include "avfilter.h"
#include "internal.h"
#include "formats.h"
#include "video.h"

Go to the source code of this file.

Data Structures

struct  CellAutoContext
 

Macros

#define OFFSET(x)   offsetof(CellAutoContext, x)
 
#define FLAGS   AV_OPT_FLAG_FILTERING_PARAM|AV_OPT_FLAG_VIDEO_PARAM
 

Functions

 AVFILTER_DEFINE_CLASS (cellauto)
 
static int init_pattern_from_string (AVFilterContext *ctx)
 
static int init_pattern_from_file (AVFilterContext *ctx)
 
static av_cold int init (AVFilterContext *ctx)
 
static av_cold void uninit (AVFilterContext *ctx)
 
static int config_props (AVFilterLink *outlink)
 
static void evolve (AVFilterContext *ctx)
 
static void fill_picture (AVFilterContext *ctx, AVFrame *picref)
 
static int request_frame (AVFilterLink *outlink)
 
static int query_formats (AVFilterContext *ctx)
 

Variables

static const AVOption cellauto_options []
 
static const AVFilterPad cellauto_outputs []
 
AVFilter ff_vsrc_cellauto
 

Detailed Description

cellular automaton video source, based on Stephen Wolfram "experimentus crucis"

Definition in file vsrc_cellauto.c.

Macro Definition Documentation

◆ OFFSET

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

Definition at line 60 of file vsrc_cellauto.c.

◆ FLAGS

Definition at line 61 of file vsrc_cellauto.c.

Function Documentation

◆ AVFILTER_DEFINE_CLASS()

AVFILTER_DEFINE_CLASS ( cellauto  )

◆ init_pattern_from_string()

static int init_pattern_from_string ( AVFilterContext ctx)
static

Definition at line 104 of file vsrc_cellauto.c.

Referenced by init(), and init_pattern_from_file().

◆ init_pattern_from_file()

static int init_pattern_from_file ( AVFilterContext ctx)
static

Definition at line 143 of file vsrc_cellauto.c.

Referenced by init().

◆ init()

static av_cold int init ( AVFilterContext ctx)
static

Definition at line 163 of file vsrc_cellauto.c.

◆ uninit()

static av_cold void uninit ( AVFilterContext ctx)
static

Definition at line 209 of file vsrc_cellauto.c.

◆ config_props()

static int config_props ( AVFilterLink outlink)
static

Definition at line 218 of file vsrc_cellauto.c.

◆ evolve()

static void evolve ( AVFilterContext ctx)
static

Definition at line 229 of file vsrc_cellauto.c.

Referenced by request_frame().

◆ fill_picture()

static void fill_picture ( AVFilterContext ctx,
AVFrame picref 
)
static

Definition at line 260 of file vsrc_cellauto.c.

Referenced by request_frame().

◆ request_frame()

static int request_frame ( AVFilterLink outlink)
static

Definition at line 288 of file vsrc_cellauto.c.

◆ query_formats()

static int query_formats ( AVFilterContext ctx)
static

Definition at line 311 of file vsrc_cellauto.c.

Variable Documentation

◆ cellauto_options

const AVOption cellauto_options[]
static
Initial value:
= {
{ "filename", "read initial pattern from file", OFFSET(filename), AV_OPT_TYPE_STRING, {.str = NULL}, 0, 0, FLAGS },
{ "f", "read initial pattern from file", OFFSET(filename), AV_OPT_TYPE_STRING, {.str = NULL}, 0, 0, FLAGS },
{ "pattern", "set initial pattern", OFFSET(pattern), AV_OPT_TYPE_STRING, {.str = NULL}, 0, 0, FLAGS },
{ "p", "set initial pattern", OFFSET(pattern), AV_OPT_TYPE_STRING, {.str = NULL}, 0, 0, FLAGS },
{ "rate", "set video rate", OFFSET(frame_rate), AV_OPT_TYPE_VIDEO_RATE, {.str = "25"}, 0, INT_MAX, FLAGS },
{ "r", "set video rate", OFFSET(frame_rate), AV_OPT_TYPE_VIDEO_RATE, {.str = "25"}, 0, INT_MAX, FLAGS },
{ "size", "set video size", OFFSET(w), AV_OPT_TYPE_IMAGE_SIZE, {.str = NULL}, 0, 0, FLAGS },
{ "s", "set video size", OFFSET(w), AV_OPT_TYPE_IMAGE_SIZE, {.str = NULL}, 0, 0, FLAGS },
{ "rule", "set rule", OFFSET(rule), AV_OPT_TYPE_INT, {.i64 = 110}, 0, 255, FLAGS },
{ "random_fill_ratio", "set fill ratio for filling initial grid randomly", OFFSET(random_fill_ratio), AV_OPT_TYPE_DOUBLE, {.dbl = 1/M_PHI}, 0, 1, FLAGS },
{ "ratio", "set fill ratio for filling initial grid randomly", OFFSET(random_fill_ratio), AV_OPT_TYPE_DOUBLE, {.dbl = 1/M_PHI}, 0, 1, FLAGS },
{ "random_seed", "set the seed for filling the initial grid randomly", OFFSET(random_seed), AV_OPT_TYPE_INT64, {.i64 = -1}, -1, UINT32_MAX, FLAGS },
{ "seed", "set the seed for filling the initial grid randomly", OFFSET(random_seed), AV_OPT_TYPE_INT64, {.i64 = -1}, -1, UINT32_MAX, FLAGS },
{ "scroll", "scroll pattern downward", OFFSET(scroll), AV_OPT_TYPE_BOOL, {.i64 = 1}, 0, 1, FLAGS },
{ "start_full", "start filling the whole video", OFFSET(start_full), AV_OPT_TYPE_BOOL, {.i64 = 0}, 0, 1, FLAGS },
{ "full", "start filling the whole video", OFFSET(start_full), AV_OPT_TYPE_BOOL, {.i64 = 1}, 0, 1, FLAGS },
{ "stitch", "stitch boundaries", OFFSET(stitch), AV_OPT_TYPE_BOOL, {.i64 = 1}, 0, 1, FLAGS },
{ NULL }
}

Definition at line 63 of file vsrc_cellauto.c.

◆ cellauto_outputs

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

Definition at line 320 of file vsrc_cellauto.c.

◆ ff_vsrc_cellauto

AVFilter ff_vsrc_cellauto
Initial value:
= {
.name = "cellauto",
.description = NULL_IF_CONFIG_SMALL("Create pattern generated by an elementary cellular automaton."),
.priv_size = sizeof(CellAutoContext),
.priv_class = &cellauto_class,
.init = init,
}

Definition at line 330 of file vsrc_cellauto.c.

OFFSET
#define OFFSET(x)
Definition: vsrc_cellauto.c:60
M_PHI
#define M_PHI
Definition: mathematics.h:49
FLAGS
#define FLAGS
Definition: vsrc_cellauto.c:61
AV_OPT_TYPE_VIDEO_RATE
@ AV_OPT_TYPE_VIDEO_RATE
offset must point to AVRational
Definition: opt.h:236
init
static av_cold int init(AVFilterContext *ctx)
Definition: vsrc_cellauto.c:163
CellAutoContext
Definition: vsrc_cellauto.c:40
config_props
static int config_props(AVFilterLink *outlink)
Definition: vsrc_cellauto.c:218
request_frame
static int request_frame(AVFilterLink *outlink)
Definition: vsrc_cellauto.c:288
AV_OPT_TYPE_DOUBLE
@ AV_OPT_TYPE_DOUBLE
Definition: opt.h:225
AV_OPT_TYPE_INT64
@ AV_OPT_TYPE_INT64
Definition: opt.h:224
outputs
static const AVFilterPad outputs[]
Definition: af_acontrast.c:203
NULL
#define NULL
Definition: coverity.c:32
AV_OPT_TYPE_IMAGE_SIZE
@ AV_OPT_TYPE_IMAGE_SIZE
offset must point to two consecutive integers
Definition: opt.h:233
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
cellauto_outputs
static const AVFilterPad cellauto_outputs[]
Definition: vsrc_cellauto.c:320
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
scroll
static void scroll(AVFilterContext *ctx, AVFrame *in, AVFrame *out)
Definition: vf_scroll.c:111
query_formats
static int query_formats(AVFilterContext *ctx)
Definition: vsrc_cellauto.c:311
w
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 please make sure they are as small as space on each network bandwidth and so on benefit from smaller test cases Also keep in mind older checkouts use existing sample that means in practice generally do not remove or overwrite files as it likely would break older checkouts or releases Also all needed samples for a commit should be ideally before the push If you need an account for frequently uploading samples or you wish to help others by doing that send a mail to ffmpeg devel rsync vauL Duo ug o o w
Definition: fate.txt:150
uninit
static av_cold void uninit(AVFilterContext *ctx)
Definition: vsrc_cellauto.c:209
AV_OPT_TYPE_INT
@ AV_OPT_TYPE_INT
Definition: opt.h:223
AVMEDIA_TYPE_VIDEO
@ AVMEDIA_TYPE_VIDEO
Definition: avutil.h:201
AV_OPT_TYPE_BOOL
@ AV_OPT_TYPE_BOOL
Definition: opt.h:240
AV_OPT_TYPE_STRING
@ AV_OPT_TYPE_STRING
Definition: opt.h:227