libopenjpegdec.c File Reference

JPEG 2000 decoder using libopenjpeg. More...

#include <openjpeg.h>
#include "libavutil/common.h"
#include "libavutil/intreadwrite.h"
#include "libavutil/imgutils.h"
#include "libavutil/pixfmt.h"
#include "libavutil/opt.h"
#include "avcodec.h"
#include "thread.h"

Go to the source code of this file.

Data Structures
struct	LibOpenJPEGContext

Macros
#define	OPJ_STATIC
#define	JP2_SIG_TYPE   0x6A502020
#define	JP2_SIG_VALUE   0x0D0A870A
#define	RGB_PIXEL_FORMATS
#define	GRAY_PIXEL_FORMATS
#define	YUV_PIXEL_FORMATS
#define	OFFSET(x)   offsetof(LibOpenJPEGContext, x)
#define	VD   AV_OPT_FLAG_VIDEO_PARAM | AV_OPT_FLAG_DECODING_PARAM

Functions
static int	libopenjpeg_matches_pix_fmt (const opj_image_t *img, enum AVPixelFormat pix_fmt)
static enum AVPixelFormat	libopenjpeg_guess_pix_fmt (const opj_image_t *image)
static int	libopenjpeg_ispacked (enum AVPixelFormat pix_fmt)
static void	libopenjpeg_copy_to_packed8 (AVFrame *picture, opj_image_t *image)
static void	libopenjpeg_copy_to_packed16 (AVFrame *picture, opj_image_t *image)
static void	libopenjpeg_copyto8 (AVFrame *picture, opj_image_t *image)
static void	libopenjpeg_copyto16 (AVFrame *p, opj_image_t *image)
static av_cold int	libopenjpeg_decode_init (AVCodecContext *avctx)
static av_cold int	libopenjpeg_decode_init_thread_copy (AVCodecContext *avctx)
static int	libopenjpeg_decode_frame (AVCodecContext *avctx, void *data, int *got_frame, AVPacket *avpkt)
static av_cold int	libopenjpeg_decode_close (AVCodecContext *avctx)

Variables
static enum AVPixelFormat	rgb_pix_fmts [] = {RGB_PIXEL_FORMATS}
static enum AVPixelFormat	gray_pix_fmts [] = {GRAY_PIXEL_FORMATS}
static enum AVPixelFormat	yuv_pix_fmts [] = {YUV_PIXEL_FORMATS}
static enum AVPixelFormat	any_pix_fmts []
static const AVOption	options []
class {
class_name = "libopenjpeg"
item_name = av_default_item_name
option = options
version = LIBAVUTIL_VERSION_INT
};
AVCodec	ff_libopenjpeg_decoder

Detailed Description

JPEG 2000 decoder using libopenjpeg.

Definition in file libopenjpegdec.c.

Macro Definition Documentation

#define GRAY_PIXEL_FORMATS

Value:

AV_PIX_FMT_GRAY8, AV_PIX_FMT_Y400A, \
                           AV_PIX_FMT_GRAY16

Definition at line 46 of file libopenjpegdec.c.

#define JP2_SIG_TYPE   0x6A502020

Definition at line 38 of file libopenjpegdec.c.

Referenced by libopenjpeg_decode_frame().

#define JP2_SIG_VALUE   0x0D0A870A

Definition at line 39 of file libopenjpegdec.c.

Referenced by libopenjpeg_decode_frame().

#define OFFSET

(

x

)

offsetof(LibOpenJPEGContext, x)

Definition at line 433 of file libopenjpegdec.c.

#define OPJ_STATIC

Definition at line 27 of file libopenjpegdec.c.

#define RGB_PIXEL_FORMATS

Value:

AV_PIX_FMT_RGB24, AV_PIX_FMT_RGBA,  \
                           AV_PIX_FMT_RGB48

Definition at line 43 of file libopenjpegdec.c.

#define VD   AV_OPT_FLAG_VIDEO_PARAM | AV_OPT_FLAG_DECODING_PARAM

Definition at line 434 of file libopenjpegdec.c.

#define YUV_PIXEL_FORMATS

Value:

AV_PIX_FMT_YUV410P,   AV_PIX_FMT_YUV411P,   \
                           AV_PIX_FMT_YUVA420P, \
                           AV_PIX_FMT_YUV420P,   AV_PIX_FMT_YUV422P,   \
                           AV_PIX_FMT_YUV440P,   AV_PIX_FMT_YUV444P,   \
                           AV_PIX_FMT_YUV420P9,  AV_PIX_FMT_YUV422P9,  \
                           AV_PIX_FMT_YUV444P9, \
                           AV_PIX_FMT_YUV420P10, AV_PIX_FMT_YUV422P10, \
                           AV_PIX_FMT_YUV444P10, \
                           AV_PIX_FMT_YUV420P16, AV_PIX_FMT_YUV422P16, \
                           AV_PIX_FMT_YUV444P16

Definition at line 49 of file libopenjpegdec.c.

Function Documentation

static void libopenjpeg_copy_to_packed16 ( AVFrame *  picture, opj_image_t *  image  )

static

Definition at line 179 of file libopenjpegdec.c.

Referenced by libopenjpeg_decode_frame().

static void libopenjpeg_copy_to_packed8 ( AVFrame *  picture, opj_image_t *  image  )

static

Definition at line 163 of file libopenjpegdec.c.

Referenced by libopenjpeg_decode_frame().

static void libopenjpeg_copyto16 ( AVFrame *  p, opj_image_t *  image  )

static

Definition at line 218 of file libopenjpegdec.c.

Referenced by libopenjpeg_decode_frame().

static void libopenjpeg_copyto8 ( AVFrame *  picture, opj_image_t *  image  )

static

Definition at line 199 of file libopenjpegdec.c.

Referenced by libopenjpeg_decode_frame().

static av_cold int libopenjpeg_decode_close ( AVCodecContext *  avctx )

static

Definition at line 424 of file libopenjpegdec.c.

static int libopenjpeg_decode_frame ( AVCodecContext *  avctx, void *  data, int *  got_frame, AVPacket *  avpkt  )

static

Definition at line 255 of file libopenjpegdec.c.

static av_cold int libopenjpeg_decode_init ( AVCodecContext *  avctx )

static

Definition at line 237 of file libopenjpegdec.c.

static av_cold int libopenjpeg_decode_init_thread_copy ( AVCodecContext *  avctx )

static

Definition at line 247 of file libopenjpegdec.c.

static enum AVPixelFormat libopenjpeg_guess_pix_fmt ( const opj_image_t *  image )

static

Definition at line 113 of file libopenjpegdec.c.

Referenced by libopenjpeg_decode_frame().

static int libopenjpeg_ispacked ( enum AVPixelFormat  pix_fmt )

inlinestatic

Definition at line 147 of file libopenjpegdec.c.

Referenced by libopenjpeg_decode_frame().

static int libopenjpeg_matches_pix_fmt ( const opj_image_t *  img, enum AVPixelFormat  pix_fmt  )

static

Definition at line 75 of file libopenjpegdec.c.

Referenced by libopenjpeg_decode_frame(), and libopenjpeg_guess_pix_fmt().

Variable Documentation

const { ... }

enum AVPixelFormat any_pix_fmts[]

static

Initial value:

= {RGB_PIXEL_FORMATS,
                                                 GRAY_PIXEL_FORMATS,
                                                 YUV_PIXEL_FORMATS}

Definition at line 63 of file libopenjpegdec.c.

Referenced by libopenjpeg_guess_pix_fmt().

class_name = "libopenjpeg"

Definition at line 443 of file libopenjpegdec.c.

AVCodec ff_libopenjpeg_decoder

Initial value:

= {
    .name             = "libopenjpeg",
    .type             = AVMEDIA_TYPE_VIDEO,
    .id               = AV_CODEC_ID_JPEG2000,
    .priv_data_size   = sizeof(LibOpenJPEGContext),
    .init             = libopenjpeg_decode_init,
    .close            = libopenjpeg_decode_close,
    .decode           = libopenjpeg_decode_frame,
    .capabilities     = CODEC_CAP_DR1 | CODEC_CAP_FRAME_THREADS,
    .long_name        = NULL_IF_CONFIG_SMALL("OpenJPEG JPEG 2000"),
    .priv_class       = &class,
    .init_thread_copy = ONLY_IF_THREADS_ENABLED(libopenjpeg_decode_init_thread_copy),
}

Definition at line 449 of file libopenjpegdec.c.

enum AVPixelFormat gray_pix_fmts[] = {GRAY_PIXEL_FORMATS}

static

Definition at line 61 of file libopenjpegdec.c.

Referenced by libopenjpeg_guess_pix_fmt().

item_name = av_default_item_name

Definition at line 444 of file libopenjpegdec.c.

option = options

Definition at line 445 of file libopenjpegdec.c.

const AVOption options[]

static

Initial value:

= {
    { "lowqual", "Limit the number of layers used for decoding",    OFFSET(lowqual), AV_OPT_TYPE_INT, { .i64 = 0 }, 0, INT_MAX, VD },
    { "lowres",  "Lower the decoding resolution by a power of two", OFFSET(lowres),  AV_OPT_TYPE_INT, { .i64 = 0 }, 0, INT_MAX, VD },
    { NULL },
}

Definition at line 436 of file libopenjpegdec.c.

enum AVPixelFormat rgb_pix_fmts[] = {RGB_PIXEL_FORMATS}

static

Definition at line 60 of file libopenjpegdec.c.

Referenced by libopenjpeg_guess_pix_fmt().

version = LIBAVUTIL_VERSION_INT

Definition at line 446 of file libopenjpegdec.c.

enum AVPixelFormat yuv_pix_fmts[] = {YUV_PIXEL_FORMATS}

static

Definition at line 62 of file libopenjpegdec.c.

Referenced by libopenjpeg_guess_pix_fmt().