FFmpeg  4.3
Data Structures | Macros | Functions | Variables
vsrc_life.c File Reference
#include "libavutil/file.h"
#include "libavutil/internal.h"
#include "libavutil/intreadwrite.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  LifeContext
 

Macros

#define ALIVE_CELL   0xFF
 
#define OFFSET(x)   offsetof(LifeContext, x)
 
#define FLAGS   AV_OPT_FLAG_VIDEO_PARAM|AV_OPT_FLAG_FILTERING_PARAM
 
#define FAST_DIV255(x)   ((((x) + 128) * 257) >> 16)
 

Functions

 AVFILTER_DEFINE_CLASS (life)
 
static int parse_rule (uint16_t *born_rule, uint16_t *stay_rule, const char *rule_str, void *log_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_monoblack (AVFilterContext *ctx, AVFrame *picref)
 
static void fill_picture_rgb (AVFilterContext *ctx, AVFrame *picref)
 
static int request_frame (AVFilterLink *outlink)
 
static int query_formats (AVFilterContext *ctx)
 

Variables

static const AVOption life_options []
 
static const AVFilterPad life_outputs []
 
AVFilter ff_vsrc_life
 

Detailed Description

life video source, based on John Conways' Life Game

Definition in file vsrc_life.c.

Macro Definition Documentation

◆ ALIVE_CELL

#define ALIVE_CELL   0xFF

Definition at line 76 of file vsrc_life.c.

◆ OFFSET

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

Definition at line 77 of file vsrc_life.c.

◆ FLAGS

Definition at line 78 of file vsrc_life.c.

◆ FAST_DIV255

#define FAST_DIV255 (   x)    ((((x) + 128) * 257) >> 16)

Definition at line 369 of file vsrc_life.c.

Function Documentation

◆ AVFILTER_DEFINE_CLASS()

AVFILTER_DEFINE_CLASS ( life  )

◆ parse_rule()

static int parse_rule ( uint16_t *  born_rule,
uint16_t *  stay_rule,
const char *  rule_str,
void log_ctx 
)
static

Definition at line 102 of file vsrc_life.c.

Referenced by init().

◆ init_pattern_from_file()

static int init_pattern_from_file ( AVFilterContext ctx)
static

Definition at line 163 of file vsrc_life.c.

Referenced by init().

◆ init()

static av_cold int init ( AVFilterContext ctx)
static

Definition at line 221 of file vsrc_life.c.

◆ uninit()

static av_cold void uninit ( AVFilterContext ctx)
static

Definition at line 270 of file vsrc_life.c.

◆ config_props()

static int config_props ( AVFilterLink outlink)
static

Definition at line 280 of file vsrc_life.c.

◆ evolve()

static void evolve ( AVFilterContext ctx)
static

Definition at line 291 of file vsrc_life.c.

Referenced by request_frame().

◆ fill_picture_monoblack()

static void fill_picture_monoblack ( AVFilterContext ctx,
AVFrame picref 
)
static

Definition at line 346 of file vsrc_life.c.

Referenced by query_formats().

◆ fill_picture_rgb()

static void fill_picture_rgb ( AVFilterContext ctx,
AVFrame picref 
)
static

Definition at line 371 of file vsrc_life.c.

Referenced by query_formats().

◆ request_frame()

static int request_frame ( AVFilterLink outlink)
static

Definition at line 398 of file vsrc_life.c.

◆ query_formats()

static int query_formats ( AVFilterContext ctx)
static

Definition at line 415 of file vsrc_life.c.

Variable Documentation

◆ life_options

const AVOption life_options[]
static
Initial value:
= {
{ "filename", "set source file", OFFSET(filename), AV_OPT_TYPE_STRING, {.str = NULL}, 0, 0, FLAGS },
{ "f", "set source file", OFFSET(filename), AV_OPT_TYPE_STRING, {.str = NULL}, 0, 0, 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 },
{ "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 },
{ "rule", "set rule", OFFSET(rule_str), AV_OPT_TYPE_STRING, {.str = "B3/S23"}, 0, 0, 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 },
{ "stitch", "stitch boundaries", OFFSET(stitch), AV_OPT_TYPE_BOOL, {.i64=1}, 0, 1, FLAGS },
{ "mold", "set mold speed for dead cells", OFFSET(mold), AV_OPT_TYPE_INT, {.i64=0}, 0, 0xFF, FLAGS },
{ "life_color", "set life color", OFFSET( life_color), AV_OPT_TYPE_COLOR, {.str="white"}, 0, 0, FLAGS },
{ "death_color", "set death color", OFFSET(death_color), AV_OPT_TYPE_COLOR, {.str="black"}, 0, 0, FLAGS },
{ "mold_color", "set mold color", OFFSET( mold_color), AV_OPT_TYPE_COLOR, {.str="black"}, 0, 0, FLAGS },
{ NULL }
}

Definition at line 80 of file vsrc_life.c.

◆ life_outputs

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

Definition at line 434 of file vsrc_life.c.

◆ ff_vsrc_life

AVFilter ff_vsrc_life
Initial value:
= {
.name = "life",
.description = NULL_IF_CONFIG_SMALL("Create life."),
.priv_size = sizeof(LifeContext),
.priv_class = &life_class,
.init = init,
}

Definition at line 444 of file vsrc_life.c.

config_props
static int config_props(AVFilterLink *outlink)
Definition: vsrc_life.c:280
OFFSET
#define OFFSET(x)
Definition: vsrc_life.c:77
M_PHI
#define M_PHI
Definition: mathematics.h:49
AV_OPT_TYPE_VIDEO_RATE
@ AV_OPT_TYPE_VIDEO_RATE
offset must point to AVRational
Definition: opt.h:236
uninit
static av_cold void uninit(AVFilterContext *ctx)
Definition: vsrc_life.c:270
query_formats
static int query_formats(AVFilterContext *ctx)
Definition: vsrc_life.c:415
FLAGS
#define FLAGS
Definition: vsrc_life.c:78
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
life_outputs
static const AVFilterPad life_outputs[]
Definition: vsrc_life.c:434
init
static av_cold int init(AVFilterContext *ctx)
Definition: vsrc_life.c:221
NULL
#define NULL
Definition: coverity.c:32
AV_OPT_TYPE_COLOR
@ AV_OPT_TYPE_COLOR
Definition: opt.h:238
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
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
LifeContext
Definition: vsrc_life.c:41
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
AV_OPT_TYPE_INT
@ AV_OPT_TYPE_INT
Definition: opt.h:223
request_frame
static int request_frame(AVFilterLink *outlink)
Definition: vsrc_life.c:398
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