libavcodec/options.c File Reference

Options definition for AVCodecContext. More...

#include "avcodec.h"
#include "internal.h"
#include "libavutil/avassert.h"
#include "libavutil/mem.h"
#include "libavutil/opt.h"
#include <float.h>
#include <string.h>
#include "options_table.h"

Go to the source code of this file.

Defines
#define	alloc_and_copy_or_fail(obj, size, pad)
#define	FOFFSET(x)   offsetof(AVFrame,x)
#define	SROFFSET(x)   offsetof(AVSubtitleRect,x)
Functions
static const char *	context_to_name (void *ptr)
static void *	codec_child_next (void *obj, void *prev)
static const AVClass *	codec_child_class_next (const AVClass *prev)
static AVClassCategory	get_category (void *ptr)
void	avcodec_get_context_defaults2 (AVCodecContext *s, enum AVMediaType codec_type)
	THIS FUNCTION IS NOT YET PART OF THE PUBLIC API! we WILL change its arguments and name a few times!
int	avcodec_get_context_defaults3 (AVCodecContext *s, const AVCodec *codec)
	Set the fields of the given AVCodecContext to default values corresponding to the given codec (defaults may be codec-dependent).
AVCodecContext *	avcodec_alloc_context3 (const AVCodec *codec)
	Allocate an AVCodecContext and set its fields to default values.
AVCodecContext *	avcodec_alloc_context2 (enum AVMediaType codec_type)
	THIS FUNCTION IS NOT YET PART OF THE PUBLIC API! we WILL change its arguments and name a few times!
void	avcodec_get_context_defaults (AVCodecContext *s)
	Set the fields of the given AVCodecContext to default values.
AVCodecContext *	avcodec_alloc_context (void)
	Allocate an AVCodecContext and set its fields to default values.
int	avcodec_copy_context (AVCodecContext *dest, const AVCodecContext *src)
	Copy the settings of the source AVCodecContext into the destination AVCodecContext.
const AVClass *	avcodec_get_class (void)
	Get the AVClass for AVCodecContext.
const AVClass *	avcodec_get_frame_class (void)
	Get the AVClass for AVFrame.
const AVClass *	avcodec_get_subtitle_rect_class (void)
	Get the AVClass for AVSubtitleRect.
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.

---

Define Documentation

#define alloc_and_copy_or_fail	(	obj,
		size,
		pad		)

Value:

if (src->obj && size > 0) { \
        dest->obj = av_malloc(size + pad); \
        if (!dest->obj) \
            goto fail; \
        memcpy(dest->obj, src->obj, size); \
        if (pad) \
            memset(((uint8_t *) dest->obj) + size, 0, pad); \
    }

Referenced by avcodec_copy_context().

#define FOFFSET

(

x

)

offsetof(AVFrame,x)

Definition at line 246 of file options.c.

#define SROFFSET

(

x

)

offsetof(AVSubtitleRect,x)

Definition at line 272 of file options.c.

---

Function Documentation

static const AVClass* codec_child_class_next

(

const AVClass *

prev

)

[static]

Definition at line 54 of file options.c.

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

Definition at line 46 of file options.c.

static const char* context_to_name

(

void *

ptr

)

[static]

Definition at line 37 of file options.c.

static AVClassCategory get_category

(

void *

ptr

)

[static]

Definition at line 70 of file options.c.

Referenced by format_line().

---

Variable Documentation

const AVClass av_codec_context_class [static]

Initial value:

 {
    .class_name              = "AVCodecContext",
    .item_name               = context_to_name,
    .option                  = options,
    .version                 = LIBAVUTIL_VERSION_INT,
    .log_level_offset_offset = 0x42,
    .child_next              = codec_child_next,
    .child_class_next        = codec_child_class_next,
    .category                = AV_CLASS_CATEGORY_ENCODER,
    .get_category            = get_category,
}

Definition at line 77 of file options.c.

const AVClass av_frame_class [static]

Initial value:

 {
    .class_name              = "AVFrame",
    .item_name               = NULL,
    .option                  = frame_options,
    .version                 = LIBAVUTIL_VERSION_INT,
}

Definition at line 260 of file options.c.

const AVClass av_subtitle_rect_class [static]

Initial value:

 {
    .class_name             = "AVSubtitleRect",
    .item_name              = NULL,
    .option                 = subtitle_rect_options,
    .version                = LIBAVUTIL_VERSION_INT,
}

Definition at line 284 of file options.c.

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},
{"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 248 of file options.c.

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},
{"forced", "", SROFFSET(forced), AV_OPT_TYPE_INT, {.i64 = 0}, 0, 1, 0},
{NULL},
}

Definition at line 274 of file options.c.