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.

Macros
#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)
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.
void	avcodec_free_context (AVCodecContext **pavctx)
	Free the codec context and everything associated with it and write NULL to the provided pointer.
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.

Macro Definition 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 248 of file options.c.

#define SROFFSET

(

x

)

offsetof(AVSubtitleRect,x)

Definition at line 275 of file options.c.

Function Documentation

static const char* context_to_name ( void *  ptr )

static

Definition at line 37 of file options.c.

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

static

Definition at line 46 of file options.c.

static const AVClass* codec_child_class_next ( const AVClass *  prev )

static

Definition at line 54 of file options.c.

static AVClassCategory get_category ( void *  ptr )

static

Definition at line 70 of file options.c.

Variable Documentation

const AVClass av_codec_context_class

static

Initial value:

= {
    .class_name              = "AVCodecContext",
    .item_name               = context_to_name,
    .option                  = avcodec_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.

Referenced by avcodec_get_class(), and avcodec_get_context_defaults3().

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 250 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 263 of file options.c.

Referenced by avcodec_get_frame_class().

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 277 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 288 of file options.c.

Referenced by avcodec_get_subtitle_rect_class().