exrenc.c File Reference

OpenEXR encoder. More...

#include <float.h>
#include <zlib.h>
#include "libavutil/avassert.h"
#include "libavutil/intfloat.h"
#include "libavutil/mem.h"
#include "libavutil/opt.h"
#include "libavutil/imgutils.h"
#include "libavutil/float2half.h"
#include "avcodec.h"
#include "bytestream.h"
#include "codec_internal.h"
#include "encode.h"

Go to the source code of this file.

Data Structures
struct	EXRScanlineData
struct	EXRContext

Macros
#define	OFFSET(x)
#define	VE   AV_OPT_FLAG_VIDEO_PARAM | AV_OPT_FLAG_ENCODING_PARAM

Enumerations
enum	ExrCompr {   EXR_RAW , EXR_RLE , EXR_ZIP1 , EXR_ZIP16 ,   EXR_NBCOMPR }
enum	ExrPixelType { EXR_UINT , EXR_HALF , EXR_FLOAT , EXR_UNKNOWN }

Functions
static av_cold int	encode_init (AVCodecContext *avctx)
static av_cold int	encode_close (AVCodecContext *avctx)
static void	reorder_pixels (uint8_t *dst, const uint8_t *src, ptrdiff_t size)
static void	predictor (uint8_t *src, ptrdiff_t size)
static int64_t	rle_compress (uint8_t *out, int64_t out_size, const uint8_t *in, int64_t in_size)
static int	encode_scanline_rle (EXRContext *s, const AVFrame *frame)
static int	encode_scanline_zip (EXRContext *s, const AVFrame *frame)
static int	encode_frame (AVCodecContext *avctx, AVPacket *pkt, const AVFrame *frame, int *got_packet)

Variables
static const char	abgr_chlist [4] = { 'A', 'B', 'G', 'R' }
static const char	bgr_chlist [4] = { 'B', 'G', 'R', 'A' }
static const char	y_chlist [4] = { 'Y' }
static const uint8_t	gbra_order [4] = { 3, 1, 0, 2 }
static const uint8_t	gbr_order [4] = { 1, 0, 2, 0 }
static const uint8_t	y_order [4] = { 0 }
static const AVOption	options []
static const AVClass	exr_class
const FFCodec	ff_exr_encoder

Detailed Description

OpenEXR encoder.

Definition in file exrenc.c.

Macro Definition Documentation

OFFSET

#define OFFSET

(

x

)

Value:

offsetof(EXRContext, x)

Definition at line 521 of file exrenc.c.

VE

#define VE   AV_OPT_FLAG_VIDEO_PARAM | AV_OPT_FLAG_ENCODING_PARAM

Definition at line 522 of file exrenc.c.

Enumeration Type Documentation

ExrCompr

enum ExrCompr

Enumerator
EXR_RAW
EXR_RLE
EXR_ZIP1
EXR_ZIP16
EXR_NBCOMPR

Definition at line 40 of file exrenc.c.

ExrPixelType

enum ExrPixelType

Enumerator
EXR_UINT
EXR_HALF
EXR_FLOAT
EXR_UNKNOWN

Definition at line 48 of file exrenc.c.

Function Documentation

encode_init()

static av_cold int encode_init ( AVCodecContext * avctx )

static

Definition at line 93 of file exrenc.c.

encode_close()

static av_cold int encode_close ( AVCodecContext * avctx )

static

Definition at line 141 of file exrenc.c.

reorder_pixels()

static void reorder_pixels ( uint8_t * dst, const uint8_t * src, ptrdiff_t size )

static

Definition at line 158 of file exrenc.c.

Referenced by encode_scanline_rle(), and encode_scanline_zip().

predictor()

static void predictor ( uint8_t * src, ptrdiff_t size )

static

Definition at line 170 of file exrenc.c.

Referenced by adpcm_compress_trellis(), adpcm_decode_frame(), adpcm_ima_alp_expand_nibble(), adpcm_ima_cunning_expand_nibble(), adpcm_ima_escape_expand_nibble(), adpcm_ima_expand_nibble(), adpcm_ima_mtf_expand_nibble(), adpcm_ima_oki_expand_nibble(), adpcm_ima_wav_expand_nibble(), adpcm_ms_compress_sample(), adpcm_ms_expand_nibble(), aptx_prediction_filtering(), decode_audio_s16(), dpcm_decode_frame(), encode_scanline_rle(), encode_scanline_zip(), ff_adpcm_ima_qt_expand_nibble(), ljpeg_decode_rgb_scan(), ljpeg_decode_yuv_scan(), ljpeg_encode_yuv_mb(), and tta_decode_frame().

rle_compress()

static int64_t rle_compress ( uint8_t * out, int64_t out_size, const uint8_t * in, int64_t in_size )

static

Definition at line 182 of file exrenc.c.

Referenced by encode_scanline_rle().

encode_scanline_rle()

static int encode_scanline_rle ( EXRContext * s, const AVFrame * frame )

static

Definition at line 221 of file exrenc.c.

Referenced by encode_frame().

encode_scanline_zip()

static int encode_scanline_zip ( EXRContext * s, const AVFrame * frame )

static

Definition at line 279 of file exrenc.c.

Referenced by encode_frame().

encode_frame()

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

static

Definition at line 350 of file exrenc.c.

Variable Documentation

abgr_chlist

const char abgr_chlist[4] = { 'A', 'B', 'G', 'R' }

static

Definition at line 55 of file exrenc.c.

Referenced by encode_init().

bgr_chlist

const char bgr_chlist[4] = { 'B', 'G', 'R', 'A' }

static

Definition at line 56 of file exrenc.c.

Referenced by encode_init().

y_chlist

const char y_chlist[4] = { 'Y' }

static

Definition at line 57 of file exrenc.c.

Referenced by encode_init().

gbra_order

const uint8_t gbra_order[4] = { 3, 1, 0, 2 }

static

Definition at line 58 of file exrenc.c.

Referenced by encode_init().

gbr_order

const uint8_t gbr_order[4] = { 1, 0, 2, 0 }

static

Definition at line 59 of file exrenc.c.

Referenced by encode_init().

y_order

const uint8_t y_order[4] = { 0 }

static

Definition at line 60 of file exrenc.c.

Referenced by encode_init().

options

const AVOption options[]

static

Initial value:

= {
    { "compression", "set compression type", OFFSET(compression), AV_OPT_TYPE_INT,   {.i64=0}, 0, EXR_NBCOMPR-1, VE, .unit = "compr" },
    { "none",        "none",                 0,                   AV_OPT_TYPE_CONST, {.i64=EXR_RAW}, 0, 0, VE, .unit = "compr" },
    { "rle" ,        "RLE",                  0,                   AV_OPT_TYPE_CONST, {.i64=EXR_RLE}, 0, 0, VE, .unit = "compr" },
    { "zip1",        "ZIP1",                 0,                   AV_OPT_TYPE_CONST, {.i64=EXR_ZIP1}, 0, 0, VE, .unit = "compr" },
    { "zip16",       "ZIP16",                0,                   AV_OPT_TYPE_CONST, {.i64=EXR_ZIP16}, 0, 0, VE, .unit = "compr" },
    { "format", "set pixel type", OFFSET(pixel_type), AV_OPT_TYPE_INT,   {.i64=EXR_FLOAT}, EXR_HALF, EXR_UNKNOWN-1, VE, .unit = "pixel" },
    { "half" ,       NULL,                   0,                   AV_OPT_TYPE_CONST, {.i64=EXR_HALF},  0, 0, VE, .unit = "pixel" },
    { "float",       NULL,                   0,                   AV_OPT_TYPE_CONST, {.i64=EXR_FLOAT}, 0, 0, VE, .unit = "pixel" },
    { "gamma", "set gamma", OFFSET(gamma), AV_OPT_TYPE_FLOAT, {.dbl=1.f}, 0.001, FLT_MAX, VE },
    { NULL},
}

Definition at line 523 of file exrenc.c.

exr_class

const AVClass exr_class

static

Initial value:

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

Definition at line 536 of file exrenc.c.

ff_exr_encoder

const FFCodec ff_exr_encoder

Initial value:

= {
    .p.name         = "exr",
    CODEC_LONG_NAME("OpenEXR image"),
    .priv_data_size = sizeof(EXRContext),
    .p.priv_class   = &exr_class,
    .p.type         = AVMEDIA_TYPE_VIDEO,
    .p.id           = AV_CODEC_ID_EXR,
    .p.capabilities = AV_CODEC_CAP_DR1 | AV_CODEC_CAP_FRAME_THREADS |
                      AV_CODEC_CAP_ENCODER_REORDERED_OPAQUE,
    .init           = encode_init,
    FF_CODEC_ENCODE_CB(encode_frame),
    .close          = encode_close,
    CODEC_PIXFMTS(AV_PIX_FMT_GRAYF32, AV_PIX_FMT_GBRPF32, AV_PIX_FMT_GBRAPF32),
    .alpha_modes    = AVALPHA_MODE_PREMULTIPLIED,
}

Definition at line 543 of file exrenc.c.