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:
8bit gray, 8bit alpha
Definition: pixfmt.h:138
Y , 8bpp.
Definition: pixfmt.h:73

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:
packed RGB 8:8:8, 24bpp, RGBRGB...
Definition: pixfmt.h:67
packed RGBA 8:8:8:8, 32bpp, RGBARGBA...
Definition: pixfmt.h:94

Definition at line 43 of file libopenjpegdec.c.

Definition at line 434 of file libopenjpegdec.c.

#define YUV_PIXEL_FORMATS
Value:
planar YUV 4:4:4, 24bpp, (1 Cr & Cb sample per 1x1 Y samples)
Definition: pixfmt.h:70
planar YUV 4:2:0, 20bpp, (1 Cr & Cb sample per 2x2 Y & A samples)
Definition: pixfmt.h:102
planar YUV 4:2:2, 16bpp, (1 Cr & Cb sample per 2x1 Y samples)
Definition: pixfmt.h:69
planar YUV 4:1:0, 9bpp, (1 Cr & Cb sample per 4x4 Y samples)
Definition: pixfmt.h:71
planar YUV 4:2:0, 12bpp, (1 Cr & Cb sample per 2x2 Y samples)
Definition: pixfmt.h:65
planar YUV 4:1:1, 12bpp, (1 Cr & Cb sample per 4x1 Y samples)
Definition: pixfmt.h:72
planar YUV 4:4:0 (1 Cr & Cb sample per 1x2 Y samples)
Definition: pixfmt.h:100

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:
#define YUV_PIXEL_FORMATS
#define RGB_PIXEL_FORMATS
#define GRAY_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",
.priv_data_size = sizeof(LibOpenJPEGContext),
.long_name = NULL_IF_CONFIG_SMALL("OpenJPEG JPEG 2000"),
.priv_class = &class,
}
static int libopenjpeg_decode_frame(AVCodecContext *avctx, void *data, int *got_frame, AVPacket *avpkt)
static int decode(MimicContext *ctx, int quality, int num_coeffs, int is_iframe)
Definition: mimic.c:228
static av_cold int libopenjpeg_decode_init(AVCodecContext *avctx)
static int init(AVCodecParserContext *s)
Definition: h264_parser.c:335
#define NULL_IF_CONFIG_SMALL(x)
Return NULL if CONFIG_SMALL is true, otherwise the argument without modification. ...
Definition: internal.h:88
#define ONLY_IF_THREADS_ENABLED(x)
Define a function with only the non-default version specified.
Definition: internal.h:128
static void close(AVCodecParserContext *s)
Definition: h264_parser.c:326
static av_cold int libopenjpeg_decode_close(AVCodecContext *avctx)
static av_cold int libopenjpeg_decode_init_thread_copy(AVCodecContext *avctx)

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 },
}
NULL
Definition: eval.c:52
#define VD
#define OFFSET(x)

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().

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().