mirror of https://github.com/FFmpeg/FFmpeg.git
You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
119 lines
3.9 KiB
119 lines
3.9 KiB
/* |
|
* JPEG 2000 image decoder |
|
* Copyright (c) 2007 Kamil Nowosad |
|
* Copyright (c) 2013 Nicolas Bertrand <nicoinattendu@gmail.com> |
|
* Copyright (c) 2022 Caleb Etemesi <etemesicaleb@gmail.com> |
|
* |
|
* This file is part of FFmpeg. |
|
* |
|
* FFmpeg is free software; you can redistribute it and/or |
|
* modify it under the terms of the GNU Lesser General Public |
|
* License as published by the Free Software Foundation; either |
|
* version 2.1 of the License, or (at your option) any later version. |
|
* |
|
* FFmpeg is distributed in the hope that it will be useful, |
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of |
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
|
* Lesser General Public License for more details. |
|
* |
|
* You should have received a copy of the GNU Lesser General Public |
|
* License along with FFmpeg; if not, write to the Free Software |
|
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA |
|
*/ |
|
|
|
#ifndef AVCODEC_JPEG2000DEC_H |
|
#define AVCODEC_JPEG2000DEC_H |
|
|
|
#include "bytestream.h" |
|
#include "jpeg2000.h" |
|
#include "jpeg2000dsp.h" |
|
|
|
|
|
#define MAX_POCS 32 |
|
|
|
typedef struct Jpeg2000POCEntry { |
|
uint16_t LYEpoc; |
|
uint16_t CSpoc; |
|
uint16_t CEpoc; |
|
uint8_t RSpoc; |
|
uint8_t REpoc; |
|
uint8_t Ppoc; |
|
} Jpeg2000POCEntry; |
|
|
|
typedef struct Jpeg2000POC { |
|
Jpeg2000POCEntry poc[MAX_POCS]; |
|
int nb_poc; |
|
int is_default; |
|
} Jpeg2000POC; |
|
|
|
typedef struct Jpeg2000TilePart { |
|
uint8_t tile_index; // Tile index who refers the tile-part |
|
const uint8_t *tp_end; |
|
GetByteContext header_tpg; // bit stream of header if PPM header is used |
|
GetByteContext tpg; // bit stream in tile-part |
|
} Jpeg2000TilePart; |
|
|
|
/* RMK: For JPEG2000 DCINEMA 3 tile-parts in a tile |
|
* one per component, so tile_part elements have a size of 3 */ |
|
typedef struct Jpeg2000Tile { |
|
Jpeg2000Component *comp; |
|
uint8_t properties[4]; |
|
Jpeg2000CodingStyle codsty[4]; |
|
Jpeg2000QuantStyle qntsty[4]; |
|
Jpeg2000POC poc; |
|
Jpeg2000TilePart tile_part[32]; |
|
uint8_t has_ppt; // whether this tile has a ppt marker |
|
uint8_t *packed_headers; // contains packed headers. Used only along with PPT marker |
|
int packed_headers_size; // size in bytes of the packed headers |
|
GetByteContext packed_headers_stream; // byte context corresponding to packed headers |
|
uint16_t tp_idx; // Tile-part index |
|
int coord[2][2]; // border coordinates {{x0, x1}, {y0, y1}} |
|
} Jpeg2000Tile; |
|
|
|
typedef struct Jpeg2000DecoderContext { |
|
AVClass *class; |
|
AVCodecContext *avctx; |
|
GetByteContext g; |
|
|
|
int width, height; |
|
int image_offset_x, image_offset_y; |
|
int tile_offset_x, tile_offset_y; |
|
uint8_t cbps[4]; // bits per sample in particular components |
|
uint8_t sgnd[4]; // if a component is signed |
|
uint8_t properties[4]; |
|
|
|
uint8_t has_ppm; |
|
uint8_t *packed_headers; // contains packed headers. Used only along with PPM marker |
|
int packed_headers_size; |
|
GetByteContext packed_headers_stream; |
|
uint8_t in_tile_headers; |
|
|
|
int cdx[4], cdy[4]; |
|
int precision; |
|
int ncomponents; |
|
int colour_space; |
|
uint32_t palette[256]; |
|
int8_t pal8; |
|
int cdef[4]; |
|
int tile_width, tile_height; |
|
unsigned numXtiles, numYtiles; |
|
int maxtilelen; |
|
AVRational sar; |
|
|
|
Jpeg2000CodingStyle codsty[4]; |
|
Jpeg2000QuantStyle qntsty[4]; |
|
Jpeg2000POC poc; |
|
uint8_t roi_shift[4]; |
|
|
|
int bit_index; |
|
|
|
int curtileno; |
|
|
|
Jpeg2000Tile *tile; |
|
Jpeg2000DSPContext dsp; |
|
|
|
/*options parameters*/ |
|
int reduction_factor; |
|
} Jpeg2000DecoderContext; |
|
|
|
#endif //AVCODEC_JPEG2000DEC_H
|
|
|