libopenjpegdec.c File Reference

JPEG 2000 decoder using libopenjpeg. More...

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

Go to the source code of this file.

Data Structures
struct	LibOpenJPEGContext
struct	BufferReader

Macros
#define	JP2_SIG_TYPE   0x6A502020
#define	JP2_SIG_VALUE   0x0D0A870A
#define	RGB_PIXEL_FORMATS
#define	GRAY_PIXEL_FORMATS
#define	YUV_PIXEL_FORMATS
#define	XYZ_PIXEL_FORMATS   AV_PIX_FMT_XYZ12
#define	OFFSET(x)   offsetof(LibOpenJPEGContext, x)
#define	VD   AV_OPT_FLAG_VIDEO_PARAM | AV_OPT_FLAG_DECODING_PARAM

Functions
static void	error_callback (const char *msg, void *data)
static void	warning_callback (const char *msg, void *data)
static void	info_callback (const char *msg, void *data)
static OPJ_SIZE_T	stream_read (void *out_buffer, OPJ_SIZE_T nb_bytes, void *user_data)
static OPJ_OFF_T	stream_skip (OPJ_OFF_T nb_bytes, void *user_data)
static OPJ_BOOL	stream_seek (OPJ_OFF_T nb_bytes, void *user_data)
static int	libopenjpeg_matches_pix_fmt (const opj_image_t *image, 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 *picture, opj_image_t *image)
static av_cold int	libopenjpeg_decode_init (AVCodecContext *avctx)
static int	libopenjpeg_decode_frame (AVCodecContext *avctx, void *data, int *got_frame, AVPacket *avpkt)

Variables
static enum AVPixelFormat	libopenjpeg_rgb_pix_fmts []
static enum AVPixelFormat	libopenjpeg_gray_pix_fmts []
static enum AVPixelFormat	libopenjpeg_yuv_pix_fmts []
static enum AVPixelFormat	libopenjpeg_all_pix_fmts []
static const AVOption	options []
static const AVClass	openjpeg_class
AVCodec	ff_libopenjpeg_decoder

Detailed Description

JPEG 2000 decoder using libopenjpeg.

Definition in file libopenjpegdec.c.

Macro Definition Documentation

JP2_SIG_TYPE

#define JP2_SIG_TYPE   0x6A502020

Definition at line 39 of file libopenjpegdec.c.

Referenced by libopenjpeg_decode_frame().

JP2_SIG_VALUE

#define JP2_SIG_VALUE   0x0D0A870A

Definition at line 40 of file libopenjpegdec.c.

Referenced by libopenjpeg_decode_frame().

RGB_PIXEL_FORMATS

#define RGB_PIXEL_FORMATS

Value:

AV_PIX_FMT_RGB24, AV_PIX_FMT_RGBA,                 \
                           AV_PIX_FMT_RGB48, AV_PIX_FMT_RGBA64

Definition at line 44 of file libopenjpegdec.c.

GRAY_PIXEL_FORMATS

#define GRAY_PIXEL_FORMATS

Value:

AV_PIX_FMT_GRAY8, AV_PIX_FMT_YA8,                  \
                           AV_PIX_FMT_GRAY16, AV_PIX_FMT_YA16

Definition at line 47 of file libopenjpegdec.c.

YUV_PIXEL_FORMATS

#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_YUVA422P, \
                           AV_PIX_FMT_YUV440P, AV_PIX_FMT_YUV444P, AV_PIX_FMT_YUVA444P, \
                           AV_PIX_FMT_YUV420P9, AV_PIX_FMT_YUV422P9, AV_PIX_FMT_YUV444P9, \
                           AV_PIX_FMT_YUVA420P9, AV_PIX_FMT_YUVA422P9, AV_PIX_FMT_YUVA444P9, \
                           AV_PIX_FMT_YUV420P10, AV_PIX_FMT_YUV422P10, AV_PIX_FMT_YUV444P10, \
                           AV_PIX_FMT_YUVA420P10, AV_PIX_FMT_YUVA422P10, AV_PIX_FMT_YUVA444P10, \
                           AV_PIX_FMT_YUV420P12, AV_PIX_FMT_YUV422P12, AV_PIX_FMT_YUV444P12, \
                           AV_PIX_FMT_YUV420P14, AV_PIX_FMT_YUV422P14, AV_PIX_FMT_YUV444P14, \
                           AV_PIX_FMT_YUV420P16, AV_PIX_FMT_YUV422P16, AV_PIX_FMT_YUV444P16, \
                           AV_PIX_FMT_YUVA420P16, AV_PIX_FMT_YUVA422P16, AV_PIX_FMT_YUVA444P16

Definition at line 50 of file libopenjpegdec.c.

XYZ_PIXEL_FORMATS

#define XYZ_PIXEL_FORMATS   AV_PIX_FMT_XYZ12

Definition at line 62 of file libopenjpegdec.c.

OFFSET

#define OFFSET

(

x

)

offsetof(LibOpenJPEGContext, x)

Definition at line 488 of file libopenjpegdec.c.

VD

#define VD   AV_OPT_FLAG_VIDEO_PARAM | AV_OPT_FLAG_DECODING_PARAM

Definition at line 489 of file libopenjpegdec.c.

Function Documentation

error_callback()

static void error_callback ( const char *  msg, void *  data  )

static

Definition at line 83 of file libopenjpegdec.c.

Referenced by libopenjpeg_decode_frame().

warning_callback()

static void warning_callback ( const char *  msg, void *  data  )

static

Definition at line 88 of file libopenjpegdec.c.

Referenced by libopenjpeg_decode_frame().

info_callback()

static void info_callback ( const char *  msg, void *  data  )

static

Definition at line 93 of file libopenjpegdec.c.

Referenced by libopenjpeg_decode_frame().

stream_read()

static OPJ_SIZE_T stream_read ( void *  out_buffer, OPJ_SIZE_T  nb_bytes, void *  user_data  )

static

Definition at line 104 of file libopenjpegdec.c.

Referenced by libopenjpeg_decode_frame().

stream_skip()

static OPJ_OFF_T stream_skip ( OPJ_OFF_T  nb_bytes, void *  user_data  )

static

Definition at line 121 of file libopenjpegdec.c.

Referenced by libopenjpeg_decode_frame().

stream_seek()

static OPJ_BOOL stream_seek ( OPJ_OFF_T  nb_bytes, void *  user_data  )

static

Definition at line 146 of file libopenjpegdec.c.

Referenced by libopenjpeg_decode_frame().

libopenjpeg_matches_pix_fmt()

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

inlinestatic

Definition at line 156 of file libopenjpegdec.c.

Referenced by libopenjpeg_decode_frame(), and libopenjpeg_guess_pix_fmt().

libopenjpeg_guess_pix_fmt()

static enum AVPixelFormat libopenjpeg_guess_pix_fmt ( const opj_image_t *  image )

inlinestatic

Definition at line 193 of file libopenjpegdec.c.

Referenced by libopenjpeg_decode_frame().

libopenjpeg_ispacked()

static int libopenjpeg_ispacked ( enum AVPixelFormat  pix_fmt )

inlinestatic

Definition at line 225 of file libopenjpegdec.c.

Referenced by libopenjpeg_decode_frame().

libopenjpeg_copy_to_packed8()

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

inlinestatic

Definition at line 240 of file libopenjpegdec.c.

Referenced by libopenjpeg_decode_frame().

libopenjpeg_copy_to_packed16()

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

inlinestatic

Definition at line 252 of file libopenjpegdec.c.

Referenced by libopenjpeg_decode_frame().

libopenjpeg_copyto8()

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

inlinestatic

Definition at line 270 of file libopenjpegdec.c.

Referenced by libopenjpeg_decode_frame().

libopenjpeg_copyto16()

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

inlinestatic

Definition at line 288 of file libopenjpegdec.c.

Referenced by libopenjpeg_decode_frame().

libopenjpeg_decode_init()

static av_cold int libopenjpeg_decode_init ( AVCodecContext *  avctx )

static

Definition at line 311 of file libopenjpegdec.c.

libopenjpeg_decode_frame()

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

static

Definition at line 319 of file libopenjpegdec.c.

Variable Documentation

libopenjpeg_rgb_pix_fmts

enum AVPixelFormat libopenjpeg_rgb_pix_fmts[]

static

Initial value:

= {
    RGB_PIXEL_FORMATS
}

Definition at line 64 of file libopenjpegdec.c.

Referenced by libopenjpeg_guess_pix_fmt().

libopenjpeg_gray_pix_fmts

enum AVPixelFormat libopenjpeg_gray_pix_fmts[]

static

Initial value:

= {
    GRAY_PIXEL_FORMATS
}

Definition at line 67 of file libopenjpegdec.c.

Referenced by libopenjpeg_guess_pix_fmt().

libopenjpeg_yuv_pix_fmts

enum AVPixelFormat libopenjpeg_yuv_pix_fmts[]

static

Initial value:

= {
    YUV_PIXEL_FORMATS
}

Definition at line 70 of file libopenjpegdec.c.

Referenced by libopenjpeg_guess_pix_fmt().

libopenjpeg_all_pix_fmts

enum AVPixelFormat libopenjpeg_all_pix_fmts[]

static

Initial value:

= {
    RGB_PIXEL_FORMATS, GRAY_PIXEL_FORMATS, YUV_PIXEL_FORMATS, XYZ_PIXEL_FORMATS
}

Definition at line 73 of file libopenjpegdec.c.

Referenced by libopenjpeg_guess_pix_fmt().

options

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 },
    { NULL },
}

Definition at line 491 of file libopenjpegdec.c.

openjpeg_class

const AVClass openjpeg_class

static

Initial value:

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

Definition at line 497 of file libopenjpegdec.c.

ff_libopenjpeg_decoder

AVCodec ff_libopenjpeg_decoder

Initial value:

= {
    .name           = "libopenjpeg",
    .long_name      = NULL_IF_CONFIG_SMALL("OpenJPEG JPEG 2000"),
    .type           = AVMEDIA_TYPE_VIDEO,
    .id             = AV_CODEC_ID_JPEG2000,
    .priv_data_size = sizeof(LibOpenJPEGContext),
    .init           = libopenjpeg_decode_init,
    .decode         = libopenjpeg_decode_frame,
    .capabilities   = AV_CODEC_CAP_DR1 | AV_CODEC_CAP_FRAME_THREADS,
    .max_lowres     = 31,
    .priv_class     = &openjpeg_class,
    .wrapper_name   = "libopenjpeg",
}

Definition at line 504 of file libopenjpegdec.c.