diff options
Diffstat (limited to 'libavcodec/jpeg2000dec.h')
| -rw-r--r-- | libavcodec/jpeg2000dec.h | 119 |
1 files changed, 119 insertions, 0 deletions
diff --git a/libavcodec/jpeg2000dec.h b/libavcodec/jpeg2000dec.h new file mode 100644 index 0000000000..d0ca6e7a79 --- /dev/null +++ b/libavcodec/jpeg2000dec.h @@ -0,0 +1,119 @@ +/* + * 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 |