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libopenjpegdec.c File Reference

JPEG 2000 decoder using libopenjpeg. More...

#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"
#include <openjpeg.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   AV_PIX_FMT_RGB24,AV_PIX_FMT_RGBA,AV_PIX_FMT_RGB48,AV_PIX_FMT_RGBA64
 
#define GRAY_PIXEL_FORMATS   AV_PIX_FMT_GRAY8,AV_PIX_FMT_GRAY8A,AV_PIX_FMT_GRAY16
 
#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 *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 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 libopenjpeg_rgb_pix_fmts [] = {RGB_PIXEL_FORMATS}
 
static enum AVPixelFormat libopenjpeg_gray_pix_fmts [] = {GRAY_PIXEL_FORMATS}
 
static enum AVPixelFormat libopenjpeg_yuv_pix_fmts [] = {YUV_PIXEL_FORMATS}
 
static enum AVPixelFormat libopenjpeg_all_pix_fmts [] = {RGB_PIXEL_FORMATS,GRAY_PIXEL_FORMATS,YUV_PIXEL_FORMATS}
 
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 OPJ_STATIC

Definition at line 27 of file libopenjpegdec.c.

#define JP2_SIG_TYPE   0x6A502020

Definition at line 43 of file libopenjpegdec.c.

Referenced by libopenjpeg_decode_frame().

#define JP2_SIG_VALUE   0x0D0A870A

Definition at line 44 of file libopenjpegdec.c.

Referenced by libopenjpeg_decode_frame().

Definition at line 48 of file libopenjpegdec.c.

#define GRAY_PIXEL_FORMATS   AV_PIX_FMT_GRAY8,AV_PIX_FMT_GRAY8A,AV_PIX_FMT_GRAY16

Definition at line 49 of file libopenjpegdec.c.

#define YUV_PIXEL_FORMATS
#define OFFSET (   x)    offsetof(LibOpenJPEGContext, x)

Definition at line 407 of file libopenjpegdec.c.

Definition at line 408 of file libopenjpegdec.c.

Function Documentation

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

Definition at line 74 of file libopenjpegdec.c.

Referenced by libopenjpeg_decode_frame(), and libopenjpeg_guess_pix_fmt().

static enum AVPixelFormat libopenjpeg_guess_pix_fmt ( const opj_image_t *  image)
inlinestatic

Definition at line 103 of file libopenjpegdec.c.

Referenced by libopenjpeg_decode_frame().

static int libopenjpeg_ispacked ( enum AVPixelFormat  pix_fmt)
inlinestatic

Definition at line 136 of file libopenjpegdec.c.

Referenced by libopenjpeg_decode_frame().

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

Definition at line 152 of file libopenjpegdec.c.

Referenced by libopenjpeg_decode_frame().

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

Definition at line 166 of file libopenjpegdec.c.

Referenced by libopenjpeg_decode_frame().

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

Definition at line 184 of file libopenjpegdec.c.

Referenced by libopenjpeg_decode_frame().

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

Definition at line 202 of file libopenjpegdec.c.

Referenced by libopenjpeg_decode_frame().

static av_cold int libopenjpeg_decode_init ( AVCodecContext avctx)
static

Definition at line 219 of file libopenjpegdec.c.

static av_cold int libopenjpeg_decode_init_thread_copy ( AVCodecContext avctx)
static

Definition at line 229 of file libopenjpegdec.c.

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

Definition at line 237 of file libopenjpegdec.c.

static av_cold int libopenjpeg_decode_close ( AVCodecContext avctx)
static

Definition at line 398 of file libopenjpegdec.c.

Variable Documentation

enum AVPixelFormat libopenjpeg_rgb_pix_fmts[] = {RGB_PIXEL_FORMATS}
static

Definition at line 62 of file libopenjpegdec.c.

Referenced by libopenjpeg_guess_pix_fmt().

enum AVPixelFormat libopenjpeg_gray_pix_fmts[] = {GRAY_PIXEL_FORMATS}
static

Definition at line 63 of file libopenjpegdec.c.

Referenced by libopenjpeg_guess_pix_fmt().

enum AVPixelFormat libopenjpeg_yuv_pix_fmts[] = {YUV_PIXEL_FORMATS}
static

Definition at line 64 of file libopenjpegdec.c.

Referenced by libopenjpeg_guess_pix_fmt().

enum AVPixelFormat libopenjpeg_all_pix_fmts[] = {RGB_PIXEL_FORMATS,GRAY_PIXEL_FORMATS,YUV_PIXEL_FORMATS}
static

Definition at line 65 of file libopenjpegdec.c.

Referenced by libopenjpeg_guess_pix_fmt().

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 410 of file libopenjpegdec.c.

class_name = "libopenjpeg"

Definition at line 416 of file libopenjpegdec.c.

item_name = av_default_item_name

Definition at line 417 of file libopenjpegdec.c.

option = options

Definition at line 418 of file libopenjpegdec.c.

Definition at line 419 of file libopenjpegdec.c.

const { ... }
AVCodec ff_libopenjpeg_decoder
Initial value:
= {
.name = "libopenjpeg",
.priv_data_size = sizeof(LibOpenJPEGContext),
.max_lowres = 31,
.long_name = NULL_IF_CONFIG_SMALL("OpenJPEG JPEG 2000"),
.priv_class = &class,
}

Definition at line 422 of file libopenjpegdec.c.