libwebpenc_common.c File Reference

#include "libavutil/opt.h"
#include "libwebpenc_common.h"

Go to the source code of this file.

Macros
#define	OFFSET(x)   offsetof(LibWebPContextCommon, x)
#define	VE   AV_OPT_FLAG_VIDEO_PARAM | AV_OPT_FLAG_ENCODING_PARAM

Functions
int	ff_libwebp_error_to_averror (int err)
av_cold int	ff_libwebp_encode_init_common (AVCodecContext *avctx)
int	ff_libwebp_get_frame (AVCodecContext *avctx, LibWebPContextCommon *s, const AVFrame *frame, AVFrame **alt_frame_ptr, WebPPicture **pic_ptr)

Variables
const AVCodecDefault	ff_libwebp_defaults []
static const AVOption	options []
const AVClass	ff_libwebpenc_class
enum AVPixelFormat	ff_libwebpenc_pix_fmts []

Detailed Description

WebP encoder using libwebp: common structs and methods.

Definition in file libwebpenc_common.c.

Macro Definition Documentation

OFFSET

#define OFFSET

(

x

)

offsetof(LibWebPContextCommon, x)

Definition at line 36 of file libwebpenc_common.c.

VE

#define VE   AV_OPT_FLAG_VIDEO_PARAM | AV_OPT_FLAG_ENCODING_PARAM

Definition at line 37 of file libwebpenc_common.c.

Function Documentation

ff_libwebp_error_to_averror()

int ff_libwebp_error_to_averror

(

int

err

)

Definition at line 67 of file libwebpenc_common.c.

Referenced by libwebp_anim_encode_frame(), and libwebp_encode_frame().

ff_libwebp_encode_init_common()

av_cold int ff_libwebp_encode_init_common

(

AVCodecContext *

avctx

)

Definition at line 81 of file libwebpenc_common.c.

Referenced by libwebp_anim_encode_init(), and libwebp_encode_init().

ff_libwebp_get_frame()

int ff_libwebp_get_frame	(	AVCodecContext *	avctx,
		LibWebPContextCommon *	s,
		const AVFrame *	frame,
		AVFrame **	alt_frame_ptr,
		WebPPicture **	pic_ptr
	)

Definition at line 124 of file libwebpenc_common.c.

Referenced by libwebp_anim_encode_frame(), and libwebp_encode_frame().

Variable Documentation

ff_libwebp_defaults

const AVCodecDefault ff_libwebp_defaults[]

Initial value:

= {
    { "compression_level",  "4"  },
    { "global_quality",     "-1" },
    { NULL },
}

Definition at line 30 of file libwebpenc_common.c.

options

const AVOption options[]

static

Initial value:

= {
    { "lossless",   "Use lossless mode",       OFFSET(lossless), AV_OPT_TYPE_INT,   { .i64 =  0 },  0, 1,                           VE           },
    { "preset",     "Configuration preset",    OFFSET(preset),   AV_OPT_TYPE_INT,   { .i64 = -1 }, -1, WEBP_PRESET_TEXT,            VE, "preset" },
    { "none",       "do not use a preset",                              0, AV_OPT_TYPE_CONST, { .i64 = -1                  }, 0, 0, VE, "preset" },
    { "default",    "default preset",                                   0, AV_OPT_TYPE_CONST, { .i64 = WEBP_PRESET_DEFAULT }, 0, 0, VE, "preset" },
    { "picture",    "digital picture, like portrait, inner shot",       0, AV_OPT_TYPE_CONST, { .i64 = WEBP_PRESET_PICTURE }, 0, 0, VE, "preset" },
    { "photo",      "outdoor photograph, with natural lighting",        0, AV_OPT_TYPE_CONST, { .i64 = WEBP_PRESET_PHOTO   }, 0, 0, VE, "preset" },
    { "drawing",    "hand or line drawing, with high-contrast details", 0, AV_OPT_TYPE_CONST, { .i64 = WEBP_PRESET_DRAWING }, 0, 0, VE, "preset" },
    { "icon",       "small-sized colorful images",                      0, AV_OPT_TYPE_CONST, { .i64 = WEBP_PRESET_ICON    }, 0, 0, VE, "preset" },
    { "text",       "text-like",                                        0, AV_OPT_TYPE_CONST, { .i64 = WEBP_PRESET_TEXT    }, 0, 0, VE, "preset" },
    { "cr_threshold","Conditional replenishment threshold",     OFFSET(cr_threshold), AV_OPT_TYPE_INT, { .i64 =  0  },  0, INT_MAX, VE           },
    { "cr_size"     ,"Conditional replenishment block size",    OFFSET(cr_size)     , AV_OPT_TYPE_INT, { .i64 =  16 },  0, 256,     VE           },
    { "quality"     ,"Quality",                OFFSET(quality),  AV_OPT_TYPE_FLOAT, { .dbl =  75 }, 0, 100,                         VE           },
    { NULL },
}

Definition at line 38 of file libwebpenc_common.c.

ff_libwebpenc_class

const AVClass ff_libwebpenc_class

Initial value:

= {
    .class_name = "libwebp encoder",
    .item_name  = av_default_item_name,
    .option     = options,
    .version    = LIBAVUTIL_VERSION_INT,
}

Definition at line 54 of file libwebpenc_common.c.

ff_libwebpenc_pix_fmts

enum AVPixelFormat ff_libwebpenc_pix_fmts[]

Initial value:

= {
    AV_PIX_FMT_RGB32,
    AV_PIX_FMT_YUV420P, AV_PIX_FMT_YUVA420P,
    AV_PIX_FMT_NONE
}

Definition at line 61 of file libwebpenc_common.c.