FFmpeg
Macros | Functions | Variables
options.c File Reference
#include "avcodec.h"
#include "internal.h"
#include "libavutil/avassert.h"
#include "libavutil/internal.h"
#include "libavutil/mem.h"
#include "libavutil/opt.h"
#include <string.h>
#include "options_table.h"

Go to the source code of this file.

Macros

#define FOFFSET(x)   offsetof(AVFrame,x)
 
#define SROFFSET(x)   offsetof(AVSubtitleRect,x)
 

Functions

FF_DISABLE_DEPRECATION_WARNINGS static const FF_ENABLE_DEPRECATION_WARNINGS char * context_to_name (void *ptr)
 
static void * codec_child_next (void *obj, void *prev)
 
static const AVClasscodec_child_class_iterate (void **iter)
 
static AVClassCategory get_category (void *ptr)
 
static int init_context_defaults (AVCodecContext *s, const AVCodec *codec)
 
AVCodecContextavcodec_alloc_context3 (const AVCodec *codec)
 Allocate an AVCodecContext and set its fields to default values. More...
 
void avcodec_free_context (AVCodecContext **pavctx)
 Free the codec context and everything associated with it and write NULL to the provided pointer. More...
 
const AVClassavcodec_get_class (void)
 Get the AVClass for AVCodecContext. More...
 
const AVClassavcodec_get_frame_class (void)
 
const AVClassavcodec_get_subtitle_rect_class (void)
 Get the AVClass for AVSubtitleRect. More...
 

Variables

static const AVClass av_codec_context_class
 
static const AVOption frame_options []
 
static const AVClass av_frame_class
 
static const AVOption subtitle_rect_options []
 
static const AVClass av_subtitle_rect_class
 

Detailed Description

Options definition for AVCodecContext.

Definition in file options.c.

Macro Definition Documentation

◆ FOFFSET

#define FOFFSET (   x)    offsetof(AVFrame,x)

Definition at line 180 of file options.c.

◆ SROFFSET

#define SROFFSET (   x)    offsetof(AVSubtitleRect,x)

Definition at line 208 of file options.c.

Function Documentation

◆ context_to_name()

FF_DISABLE_DEPRECATION_WARNINGS static const FF_ENABLE_DEPRECATION_WARNINGS char* context_to_name ( void *  ptr)
static

Definition at line 39 of file options.c.

◆ codec_child_next()

static void* codec_child_next ( void *  obj,
void *  prev 
)
static

Definition at line 48 of file options.c.

◆ codec_child_class_iterate()

static const AVClass* codec_child_class_iterate ( void **  iter)
static

Definition at line 56 of file options.c.

◆ get_category()

static AVClassCategory get_category ( void *  ptr)
static

Definition at line 66 of file options.c.

◆ init_context_defaults()

static int init_context_defaults ( AVCodecContext s,
const AVCodec codec 
)
static

Definition at line 85 of file options.c.

Referenced by avcodec_alloc_context3().

Variable Documentation

◆ av_codec_context_class

const AVClass av_codec_context_class
static
Initial value:
= {
.class_name = "AVCodecContext",
.item_name = context_to_name,
.option = avcodec_options,
.log_level_offset_offset = 0x42,
.child_next = codec_child_next,
.child_class_iterate = codec_child_class_iterate,
.get_category = get_category,
}

Definition at line 73 of file options.c.

Referenced by avcodec_get_class(), and init_context_defaults().

◆ frame_options

const AVOption frame_options[]
static
Initial value:
={
{"best_effort_timestamp", "", FOFFSET(best_effort_timestamp), AV_OPT_TYPE_INT64, {.i64 = AV_NOPTS_VALUE }, INT64_MIN, INT64_MAX, 0},
{"pkt_pos", "", FOFFSET(pkt_pos), AV_OPT_TYPE_INT64, {.i64 = -1 }, INT64_MIN, INT64_MAX, 0},
{"pkt_size", "", FOFFSET(pkt_size), AV_OPT_TYPE_INT64, {.i64 = -1 }, INT64_MIN, INT64_MAX, 0},
{"sample_aspect_ratio", "", FOFFSET(sample_aspect_ratio), AV_OPT_TYPE_RATIONAL, {.dbl = 0 }, 0, INT_MAX, 0},
{"width", "", FOFFSET(width), AV_OPT_TYPE_INT, {.i64 = 0 }, 0, INT_MAX, 0},
{"height", "", FOFFSET(height), AV_OPT_TYPE_INT, {.i64 = 0 }, 0, INT_MAX, 0},
{"format", "", FOFFSET(format), AV_OPT_TYPE_INT, {.i64 = -1 }, 0, INT_MAX, 0},
{"channel_layout", "", FOFFSET(channel_layout), AV_OPT_TYPE_INT64, {.i64 = 0 }, 0, INT64_MAX, 0},
{"sample_rate", "", FOFFSET(sample_rate), AV_OPT_TYPE_INT, {.i64 = 0 }, 0, INT_MAX, 0},
{NULL},
}

Definition at line 182 of file options.c.

◆ av_frame_class

const AVClass av_frame_class
static
Initial value:
= {
.class_name = "AVFrame",
.item_name = NULL,
.option = frame_options,
}

Definition at line 195 of file options.c.

Referenced by avcodec_get_frame_class().

◆ subtitle_rect_options

const AVOption subtitle_rect_options[]
static
Initial value:
={
{"x", "", SROFFSET(x), AV_OPT_TYPE_INT, {.i64 = 0 }, 0, INT_MAX, 0},
{"y", "", SROFFSET(y), AV_OPT_TYPE_INT, {.i64 = 0 }, 0, INT_MAX, 0},
{"w", "", SROFFSET(w), AV_OPT_TYPE_INT, {.i64 = 0 }, 0, INT_MAX, 0},
{"h", "", SROFFSET(h), AV_OPT_TYPE_INT, {.i64 = 0 }, 0, INT_MAX, 0},
{"type", "", SROFFSET(type), AV_OPT_TYPE_INT, {.i64 = 0 }, 0, INT_MAX, 0},
{"flags", "", SROFFSET(flags), AV_OPT_TYPE_FLAGS, {.i64 = 0}, 0, 1, 0, "flags"},
{"forced", "", SROFFSET(flags), AV_OPT_TYPE_FLAGS, {.i64 = 0}, 0, 1, 0},
{NULL},
}

Definition at line 210 of file options.c.

◆ av_subtitle_rect_class

const AVClass av_subtitle_rect_class
static
Initial value:
= {
.class_name = "AVSubtitleRect",
.item_name = NULL,
}

Definition at line 221 of file options.c.

Referenced by avcodec_get_subtitle_rect_class().

w
uint8_t w
Definition: llviddspenc.c:38
AV_OPT_TYPE_RATIONAL
@ AV_OPT_TYPE_RATIONAL
Definition: opt.h:229
sample_rate
sample_rate
Definition: ffmpeg_filter.c:156
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
subtitle_rect_options
static const AVOption subtitle_rect_options[]
Definition: options.c:210
width
#define width
AV_OPT_TYPE_INT64
@ AV_OPT_TYPE_INT64
Definition: opt.h:225
LIBAVUTIL_VERSION_INT
#define LIBAVUTIL_VERSION_INT
Definition: version.h:85
NULL
#define NULL
Definition: coverity.c:32
codec_child_next
static void * codec_child_next(void *obj, void *prev)
Definition: options.c:48
codec_child_class_iterate
static const AVClass * codec_child_class_iterate(void **iter)
Definition: options.c:56
AVClass::category
AVClassCategory category
Category used for visualization (like color) This is only set if the category is equal for all object...
Definition: log.h:119
AV_NOPTS_VALUE
#define AV_NOPTS_VALUE
Undefined timestamp value.
Definition: avutil.h:248
height
#define height
SROFFSET
#define SROFFSET(x)
Definition: options.c:208
frame_options
static const AVOption frame_options[]
Definition: options.c:182
get_category
static AVClassCategory get_category(void *ptr)
Definition: options.c:66
AV_OPT_TYPE_INT
@ AV_OPT_TYPE_INT
Definition: opt.h:224
format
fg outputs[0] format
Definition: ffmpeg_filter.c:175
AV_OPT_TYPE_FLAGS
@ AV_OPT_TYPE_FLAGS
Definition: opt.h:223
flags
#define flags(name, subs,...)
Definition: cbs_av1.c:561
avcodec_options
static const AVOption avcodec_options[]
Definition: options_table.h:45
FOFFSET
#define FOFFSET(x)
Definition: options.c:180
AV_CLASS_CATEGORY_ENCODER
@ AV_CLASS_CATEGORY_ENCODER
Definition: log.h:34
h
h
Definition: vp9dsp_template.c:2038
context_to_name
FF_DISABLE_DEPRECATION_WARNINGS static const FF_ENABLE_DEPRECATION_WARNINGS char * context_to_name(void *ptr)
Definition: options.c:39