libwebpenc.c File Reference

WebP encoder using libwebp. More...

#include <webp/encode.h>
#include "libavutil/common.h"
#include "libavutil/frame.h"
#include "libavutil/imgutils.h"
#include "libavutil/opt.h"
#include "avcodec.h"
#include "internal.h"

Go to the source code of this file.

Data Structures
struct	LibWebPContext

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

Functions
static int	libwebp_error_to_averror (int err)
static av_cold int	libwebp_encode_init (AVCodecContext *avctx)
static int	libwebp_encode_frame (AVCodecContext *avctx, AVPacket *pkt, const AVFrame *frame, int *got_packet)
static int	libwebp_encode_close (AVCodecContext *avctx)

Variables
static const AVOption	options []
class {
class_name = "libwebp"
item_name = av_default_item_name
option = options
version = LIBAVUTIL_VERSION_INT
};
static const AVCodecDefault	libwebp_defaults []
AVCodec	ff_libwebp_encoder

Detailed Description

WebP encoder using libwebp.

Definition in file libwebpenc.c.

Macro Definition Documentation

#define OFFSET

(

x

)

offsetof(LibWebPContext, x)

Definition at line 315 of file libwebpenc.c.

#define VE   AV_OPT_FLAG_VIDEO_PARAM | AV_OPT_FLAG_ENCODING_PARAM

Definition at line 316 of file libwebpenc.c.

Function Documentation

static int libwebp_error_to_averror ( int  err )

static

Definition at line 49 of file libwebpenc.c.

Referenced by libwebp_encode_frame().

static av_cold int libwebp_encode_init ( AVCodecContext *  avctx )

static

Definition at line 63 of file libwebpenc.c.

static int libwebp_encode_frame ( AVCodecContext *  avctx, AVPacket *  pkt, const AVFrame *  frame, int *  got_packet  )

static

Definition at line 106 of file libwebpenc.c.

static int libwebp_encode_close ( AVCodecContext *  avctx )

static

Definition at line 306 of file libwebpenc.c.

Variable Documentation

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 317 of file libwebpenc.c.

class_name = "libwebp"

Definition at line 335 of file libwebpenc.c.

Referenced by av_opt_show2().

item_name = av_default_item_name

Definition at line 336 of file libwebpenc.c.

option = options

Definition at line 337 of file libwebpenc.c.

Referenced by ff_aac_coder_init_mips(), ffserver_save_avoption(), open_input_file(), open_output_file(), and pp_get_mode_by_name_and_quality().

version = LIBAVUTIL_VERSION_INT

Definition at line 338 of file libwebpenc.c.

const { ... }

const AVCodecDefault libwebp_defaults[]

static

Initial value:

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

Definition at line 341 of file libwebpenc.c.

AVCodec ff_libwebp_encoder

Initial value:

= {
    .name           = "libwebp",
    .long_name      = NULL_IF_CONFIG_SMALL("libwebp WebP image"),
    .type           = AVMEDIA_TYPE_VIDEO,
    .id             = AV_CODEC_ID_WEBP,
    .priv_data_size = sizeof(LibWebPContext),
    .init           = libwebp_encode_init,
    .encode2        = libwebp_encode_frame,
    .close          = libwebp_encode_close,
    .pix_fmts       = (const enum AVPixelFormat[]) {
        AV_PIX_FMT_RGB32,
        AV_PIX_FMT_YUV420P, AV_PIX_FMT_YUVA420P,
        AV_PIX_FMT_NONE
    },
    .priv_class     = &class,
    .defaults       = libwebp_defaults,
}

Definition at line 347 of file libwebpenc.c.