OpenJPEG 2.3.0

Macros | Functions | Variables
jp2.c File Reference
`#include "opj_includes.h"`

## Macros
#define | OPJ_BOX_SIZE 1024
#define | OPJ_UNUSED(x) (void)x

## Functions
static OPJ_BOOL | opj_jp2_setup_end_header_writing (opj_jp2_t *jp2, opj_event_mgr_t *p_manager)
| Sets up the procedures to do on writing header after the codestream. More...
static OPJ_BOOL | opj_jp2_setup_end_header_reading (opj_jp2_t *jp2, opj_event_mgr_t *p_manager)
| Sets up the procedures to do on reading header after the codestream. More...
static OPJ_BOOL | opj_jp2_read_header_procedure (opj_jp2_t *jp2, opj_stream_private_t *stream, opj_event_mgr_t *p_manager)
| Reads a jpeg2000 file header structure. More...
static OPJ_BOOL | opj_jp2_exec (opj_jp2_t *jp2, opj_procedure_list_t *p_procedure_list, opj_stream_private_t *stream, opj_event_mgr_t *p_manager)
| Executes the given procedures on the given codec. More...
static OPJ_BOOL | opj_jp2_read_boxhdr (opj_jp2_box_t *box, OPJ_UINT32 *p_number_bytes_read, opj_stream_private_t *cio, opj_event_mgr_t *p_manager)
| Reads a box header. More...
static OPJ_BOOL | opj_jp2_setup_encoding_validation (opj_jp2_t *jp2, opj_event_mgr_t *p_manager)
| Sets up the validation ,i.e. More...
static OPJ_BOOL | opj_jp2_setup_header_writing (opj_jp2_t *jp2, opj_event_mgr_t *p_manager)
| Sets up the procedures to do on writing header. More...
static OPJ_BOOL | opj_jp2_default_validation (opj_jp2_t *jp2, opj_stream_private_t *cio, opj_event_mgr_t *p_manager)
static const opj_jp2_header_handler_t * | opj_jp2_img_find_handler (OPJ_UINT32 p_id)
| Finds the image execution function related to the given box id. More...
static const opj_jp2_header_handler_t * | opj_jp2_find_handler (OPJ_UINT32 p_id)
| Finds the execution function related to the given box id. More...
static OPJ_BOOL | opj_jp2_read_boxhdr_char (opj_jp2_box_t *box, OPJ_BYTE *p_data, OPJ_UINT32 *p_number_bytes_read, OPJ_UINT32 p_box_max_size, opj_event_mgr_t *p_manager)
| Reads a box header. More...
static OPJ_BOOL | opj_jp2_setup_decoding_validation (opj_jp2_t *jp2, opj_event_mgr_t *p_manager)
| Sets up the validation ,i.e. More...
static OPJ_BOOL | opj_jp2_setup_header_reading (opj_jp2_t *jp2, opj_event_mgr_t *p_manager)
| Sets up the procedures to do on reading header. More...
static OPJ_BOOL | opj_jp2_check_color (opj_image_t *image, opj_jp2_color_t *color, opj_event_mgr_t *p_manager)
OPJ_BOOL | opj_jp2_decode (opj_jp2_t *jp2, opj_stream_private_t *p_stream, opj_image_t *p_image, opj_event_mgr_t *p_manager)
| Decode an image from a JPEG-2000 file stream. More...
void | opj_jp2_setup_decoder (opj_jp2_t *jp2, opj_dparameters_t *parameters)
| Setup the decoder decoding parameters using user parameters. More...
OPJ_BOOL | opj_jp2_set_threads (opj_jp2_t *jp2, OPJ_UINT32 num_threads)
| Allocates worker threads for the compressor/decompressor. More...
OPJ_BOOL | opj_jp2_setup_encoder (opj_jp2_t *jp2, opj_cparameters_t *parameters, opj_image_t *image, opj_event_mgr_t *p_manager)
| Setup the encoder parameters using the current image and using user parameters. More...
OPJ_BOOL | opj_jp2_encode (opj_jp2_t *jp2, opj_stream_private_t *stream, opj_event_mgr_t *p_manager)
| Encode an image into a JPEG-2000 file stream. More...
OPJ_BOOL | opj_jp2_end_decompress (opj_jp2_t *jp2, opj_stream_private_t *cio, opj_event_mgr_t *p_manager)
| Ends the decompression procedures and possibiliy add data to be read after the codestream. More...
OPJ_BOOL | opj_jp2_end_compress (opj_jp2_t *jp2, opj_stream_private_t *cio, opj_event_mgr_t *p_manager)
| Ends the compression procedures and possibiliy add data to be read after the codestream. More...
OPJ_BOOL | opj_jp2_start_compress (opj_jp2_t *jp2, opj_stream_private_t *stream, opj_image_t *p_image, opj_event_mgr_t *p_manager)
| Starts a compression scheme, i.e. More...
static OPJ_BOOL | opj_jpip_skip_iptr (opj_jp2_t *jp2, opj_stream_private_t *stream, opj_event_mgr_t *p_manager)
OPJ_BOOL | opj_jp2_read_header (opj_stream_private_t *p_stream, opj_jp2_t *jp2, opj_image_t **p_image, opj_event_mgr_t *p_manager)
| Reads a jpeg2000 file header structure. More...
OPJ_BOOL | opj_jp2_read_tile_header (opj_jp2_t *p_jp2, OPJ_UINT32 *p_tile_index, OPJ_UINT32 *p_data_size, OPJ_INT32 *p_tile_x0, OPJ_INT32 *p_tile_y0, OPJ_INT32 *p_tile_x1, OPJ_INT32 *p_tile_y1, OPJ_UINT32 *p_nb_comps, OPJ_BOOL *p_go_on, opj_stream_private_t *p_stream, opj_event_mgr_t *p_manager)
| Reads a tile header. More...
OPJ_BOOL | opj_jp2_write_tile (opj_jp2_t *p_jp2, OPJ_UINT32 p_tile_index, OPJ_BYTE *p_data, OPJ_UINT32 p_data_size, opj_stream_private_t *p_stream, opj_event_mgr_t *p_manager)
| Writes a tile. More...
OPJ_BOOL | opj_jp2_decode_tile (opj_jp2_t *p_jp2, OPJ_UINT32 p_tile_index, OPJ_BYTE *p_data, OPJ_UINT32 p_data_size, opj_stream_private_t *p_stream, opj_event_mgr_t *p_manager)
| Decode tile data. More...
void | opj_jp2_destroy (opj_jp2_t *jp2)
| Destroy a JP2 decompressor handle. More...
OPJ_BOOL | opj_jp2_set_decoded_components (opj_jp2_t *p_jp2, OPJ_UINT32 numcomps, const OPJ_UINT32 *comps_indices, opj_event_mgr_t *p_manager)
| Sets the indices of the components to decode. More...
OPJ_BOOL | opj_jp2_set_decode_area (opj_jp2_t *p_jp2, opj_image_t *p_image, OPJ_INT32 p_start_x, OPJ_INT32 p_start_y, OPJ_INT32 p_end_x, OPJ_INT32 p_end_y, opj_event_mgr_t *p_manager)
| Sets the given area to be decoded. More...
OPJ_BOOL | opj_jp2_get_tile (opj_jp2_t *p_jp2, opj_stream_private_t *p_stream, opj_image_t *p_image, opj_event_mgr_t *p_manager, OPJ_UINT32 tile_index)
opj_jp2_t * | opj_jp2_create (OPJ_BOOL p_is_decoder)
| Creates a jpeg2000 file decompressor. More...
void | jp2_dump (opj_jp2_t *p_jp2, OPJ_INT32 flag, FILE *out_stream)
| Dump some elements from the JP2 decompression structure . More...
opj_codestream_index_t * | jp2_get_cstr_index (opj_jp2_t *p_jp2)
| Get the codestream index from a JPEG2000 codec. More...
opj_codestream_info_v2_t * | jp2_get_cstr_info (opj_jp2_t *p_jp2)
| Get the codestream info from a JPEG2000 codec. More...
OPJ_BOOL | opj_jp2_set_decoded_resolution_factor (opj_jp2_t *p_jp2, OPJ_UINT32 res_factor, opj_event_mgr_t *p_manager)
Local static functions
static OPJ_BOOL | opj_jp2_read_ihdr (opj_jp2_t *jp2, OPJ_BYTE *p_image_header_data, OPJ_UINT32 p_image_header_size, opj_event_mgr_t *p_manager)
| Reads a IHDR box - Image Header box. More...
static OPJ_BYTE * | opj_jp2_write_ihdr (opj_jp2_t *jp2, OPJ_UINT32 *p_nb_bytes_written)
| Writes the Image Header box - Image Header box. More...
static OPJ_BYTE * | opj_jp2_write_bpcc (opj_jp2_t *jp2, OPJ_UINT32 *p_nb_bytes_written)
| Writes the Bit per Component box. More...
static OPJ_BOOL | opj_jp2_read_bpcc (opj_jp2_t *jp2, OPJ_BYTE *p_bpc_header_data, OPJ_UINT32 p_bpc_header_size, opj_event_mgr_t *p_manager)
| Reads a Bit per Component box. More...
static OPJ_BOOL | opj_jp2_read_cdef (opj_jp2_t *jp2, OPJ_BYTE *p_cdef_header_data, OPJ_UINT32 p_cdef_header_size, opj_event_mgr_t *p_manager)
static void | opj_jp2_apply_cdef (opj_image_t *image, opj_jp2_color_t *color, opj_event_mgr_t *)
static OPJ_BYTE * | opj_jp2_write_cdef (opj_jp2_t *jp2, OPJ_UINT32 *p_nb_bytes_written)
| Writes the Channel Definition box. More...
static OPJ_BYTE * | opj_jp2_write_colr (opj_jp2_t *jp2, OPJ_UINT32 *p_nb_bytes_written)
| Writes the Colour Specification box. More...
static OPJ_BOOL | opj_jp2_write_ftyp (opj_jp2_t *jp2, opj_stream_private_t *cio, opj_event_mgr_t *p_manager)
| Writes a FTYP box - File type box. More...
static OPJ_BOOL | opj_jp2_read_ftyp (opj_jp2_t *jp2, OPJ_BYTE *p_header_data, OPJ_UINT32 p_header_size, opj_event_mgr_t *p_manager)
| Reads a a FTYP box - File type box. More...
static OPJ_BOOL | opj_jp2_skip_jp2c (opj_jp2_t *jp2, opj_stream_private_t *stream, opj_event_mgr_t *p_manager)
static OPJ_BOOL | opj_jp2_read_jp2h (opj_jp2_t *jp2, OPJ_BYTE *p_header_data, OPJ_UINT32 p_header_size, opj_event_mgr_t *p_manager)
| Reads the Jpeg2000 file Header box - JP2 Header box (warning, this is a super box). More...
static OPJ_BOOL | opj_jp2_write_jp2h (opj_jp2_t *jp2, opj_stream_private_t *stream, opj_event_mgr_t *p_manager)
| Writes the Jpeg2000 file Header box - JP2 Header box (warning, this is a super box). More...
static OPJ_BOOL | opj_jp2_write_jp2c (opj_jp2_t *jp2, opj_stream_private_t *cio, opj_event_mgr_t *p_manager)
| Writes the Jpeg2000 codestream Header box - JP2C Header box. More...
static OPJ_BOOL | opj_jp2_read_jp (opj_jp2_t *jp2, OPJ_BYTE *p_header_data, OPJ_UINT32 p_header_size, opj_event_mgr_t *p_manager)
| Reads a jpeg2000 file signature box. More...
static OPJ_BOOL | opj_jp2_write_jp (opj_jp2_t *jp2, opj_stream_private_t *cio, opj_event_mgr_t *p_manager)
| Writes a jpeg2000 file signature box. More...
static OPJ_BOOL | opj_jp2_apply_pclr (opj_image_t *image, opj_jp2_color_t *color, opj_event_mgr_t *p_manager)
| Apply collected palette data. More...
static void | opj_jp2_free_pclr (opj_jp2_color_t *color)
static OPJ_BOOL | opj_jp2_read_pclr (opj_jp2_t *jp2, OPJ_BYTE *p_pclr_header_data, OPJ_UINT32 p_pclr_header_size, opj_event_mgr_t *p_manager)
| Collect palette data. More...
static OPJ_BOOL | opj_jp2_read_cmap (opj_jp2_t *jp2, OPJ_BYTE *p_cmap_header_data, OPJ_UINT32 p_cmap_header_size, opj_event_mgr_t *p_manager)
| Collect component mapping data. More...
static OPJ_BOOL | opj_jp2_read_colr (opj_jp2_t *jp2, OPJ_BYTE *p_colr_header_data, OPJ_UINT32 p_colr_header_size, opj_event_mgr_t *p_manager)
| Reads the Color Specification box. More...

## Variables
static const opj_jp2_header_handler_t | jp2_header []
static const opj_jp2_header_handler_t | jp2_img_header []

## Function Documentation

## ◆ opj_jp2_check_color()

static OPJ_BOOL opj_jp2_check_color | ( | opj_image_t * | image,
|  | opj_jp2_color_t * | color,
|  | opj_event_mgr_t * | p_manager
| ) |  |
| static

References opj_jp2_pclr::cmap, EVT_ERROR, EVT_WARNING, opj_jp2_cdef::info, opj_jp2_color::jp2_cdef, opj_jp2_color::jp2_pclr, opj_jp2_cmap_comp::mtyp, opj_jp2_cdef::n, opj_jp2_pclr::nr_channels, opj_image::numcomps, opj_calloc(), opj_event_msg(), OPJ_FALSE, opj_free(), OPJ_TRUE, and opj_jp2_cmap_comp::pcol.

Referenced by opj_jp2_decode(), and opj_jp2_get_tile().

## ◆ opj_jp2_default_validation()

static OPJ_BOOL opj_jp2_default_validation | ( | opj_jp2_t * | jp2,
|  | opj_stream_private_t * | cio,
|  | opj_event_mgr_t * | p_manager
| ) |  |
| static

References opj_jp2_comps::bpcc, opj_jp2::comps, opj_jp2::h, opj_jp2::j2k, opj_jp2::jp2_img_state, JP2_IMG_STATE_NONE, opj_jp2::jp2_state, JP2_STATE_NONE, opj_jp2::m_procedure_list, opj_jp2::m_validation_list, opj_jp2::meth, opj_jp2::numcl, opj_jp2::numcomps, opj_stream_has_seek(), OPJ_TRUE, OPJ_UNUSED, and opj_jp2::w.

Referenced by opj_jp2_setup_encoding_validation().

## ◆ opj_jp2_exec()

static OPJ_BOOL opj_jp2_exec | ( | opj_jp2_t * | jp2,
|  | opj_procedure_list_t * | p_procedure_list,
|  | opj_stream_private_t * | stream,
|  | opj_event_mgr_t * | p_manager
| ) |  |
| static

Executes the given procedures on the given codec.

Parameters

  p_procedure_list | the list of procedures to execute
  jp2 | the jpeg2000 file codec to execute the procedures on.
  stream | the stream to execute the procedures on.
  p_manager | the user manager.

Returns
  true if all the procedures were successfully executed.

References opj_procedure_list_clear(), opj_procedure_list_get_first_procedure(), opj_procedure_list_get_nb_procedures(), and OPJ_TRUE.

Referenced by opj_jp2_end_compress(), opj_jp2_end_decompress(), opj_jp2_read_header(), and opj_jp2_start_compress().

## ◆ opj_jp2_find_handler()

static const opj_jp2_header_handler_t * opj_jp2_find_handler | ( | OPJ_UINT32 | p_id | ) |
| static

Finds the execution function related to the given box id.

Parameters

  p_id | the id of the handler to fetch.

Returns
  the given handler or NULL if it could not be found.

References jp2_header.

Referenced by opj_jp2_read_header_procedure().

## ◆ opj_jp2_img_find_handler()

static const opj_jp2_header_handler_t * opj_jp2_img_find_handler | ( | OPJ_UINT32 | p_id | ) |
| static

Finds the image execution function related to the given box id.

Parameters

  p_id | the id of the handler to fetch.

Returns
  the given handler or NULL if it could not be found.

Parameters

  p_id | the id of the handler to fetch.

Returns
  the given handler or 00 if it could not be found.

References jp2_img_header.

Referenced by opj_jp2_read_header_procedure(), and opj_jp2_read_jp2h().

## ◆ opj_jp2_read_boxhdr()

static OPJ_BOOL opj_jp2_read_boxhdr | ( | opj_jp2_box_t * | box,
|  | OPJ_UINT32 * | p_number_bytes_read,
|  | opj_stream_private_t * | cio,
|  | opj_event_mgr_t * | p_manager
| ) |  |
| static

Reads a box header.

The box is the way data is packed inside a jpeg2000 file structure.

Parameters

  cio | the input stream to read data from.
  box | the box structure to fill.
  p_number_bytes_read | pointer to an int that will store the number of bytes read from the stream (shoul usually be 2).
  p_manager | user event manager.

Returns
  true if the box is recognized, false otherwise

References EVT_ERROR, opj_jp2_box::init_pos, JP2_URL, opj_jp2_box::length, opj_event_msg(), OPJ_FALSE, opj_read_bytes, opj_stream_get_number_byte_left(), opj_stream_read_data(), OPJ_TRUE, and opj_jp2_box::type.

Referenced by opj_jp2_read_header_procedure().

## ◆ opj_jp2_read_boxhdr_char()

static OPJ_BOOL opj_jp2_read_boxhdr_char | ( | opj_jp2_box_t * | box,
|  | OPJ_BYTE * | p_data,
|  | OPJ_UINT32 * | p_number_bytes_read,
|  | OPJ_UINT32 | p_box_max_size,
|  | opj_event_mgr_t * | p_manager
| ) |  |
| static

Reads a box header.

The box is the way data is packed inside a jpeg2000 file structure. Data is read from a character string

Parameters

  box | the box structure to fill.
  p_data | the character string to read data from.
  p_number_bytes_read | pointer to an int that will store the number of bytes read from the stream (shoul usually be 2).
  p_box_max_size | the maximum number of bytes in the box.
  p_manager | FIXME DOC

Returns
  true if the box is recognized, false otherwise

References EVT_ERROR, opj_jp2_box::length, opj_event_msg(), OPJ_FALSE, opj_read_bytes, OPJ_TRUE, and opj_jp2_box::type.

Referenced by opj_jp2_read_jp2h().

## ◆ opj_jp2_read_header_procedure()

static OPJ_BOOL opj_jp2_read_header_procedure | ( | opj_jp2_t * | jp2,
|  | opj_stream_private_t * | stream,
|  | opj_event_mgr_t * | p_manager
| ) |  |
| static

Reads a jpeg2000 file header structure.

Parameters

  jp2 | the jpeg2000 file header structure.
  stream | the stream to read data from.
  p_manager | the user event manager.

Returns
  true if the box is valid.

References EVT_ERROR, EVT_WARNING, opj_jp2_header_handler::handler, JP2_JP2C, opj_jp2::jp2_state, JP2_STATE_CODESTREAM, JP2_STATE_FILE_TYPE, JP2_STATE_HEADER, JP2_STATE_SIGNATURE, JP2_STATE_UNKNOWN, opj_jp2_box::length, OPJ_BOX_SIZE, opj_calloc(), opj_event_msg(), OPJ_FALSE, opj_free(), opj_jp2_find_handler(), opj_jp2_img_find_handler(), opj_jp2_read_boxhdr(), opj_realloc(), opj_stream_get_number_byte_left(), opj_stream_read_data(), opj_stream_skip(), OPJ_TRUE, and opj_jp2_box::type.

Referenced by opj_jp2_setup_end_header_reading(), and opj_jp2_setup_header_reading().

## ◆ opj_jp2_setup_decoding_validation()

static OPJ_BOOL opj_jp2_setup_decoding_validation | ( | opj_jp2_t * | jp2,
|  | opj_event_mgr_t * | p_manager
| ) |  |
| static

Sets up the validation ,i.e.

adds the procedures to launch to make sure the codec parameters are valid. Developpers wanting to extend the library can add their own validation procedures.

References OPJ_TRUE, and OPJ_UNUSED.

Referenced by opj_jp2_read_header().

## ◆ opj_jp2_setup_encoding_validation()

static OPJ_BOOL opj_jp2_setup_encoding_validation | ( | opj_jp2_t * | jp2,
|  | opj_event_mgr_t * | p_manager
| ) |  |
| static

Sets up the validation ,i.e.

adds the procedures to launch to make sure the codec parameters are valid. Developpers wanting to extend the library can add their own validation procedures.

References opj_jp2::m_validation_list, OPJ_FALSE, opj_jp2_default_validation(), opj_procedure_list_add_procedure(), and OPJ_TRUE.

Referenced by opj_jp2_start_compress().

## ◆ opj_jp2_setup_end_header_reading()

static OPJ_BOOL opj_jp2_setup_end_header_reading | ( | opj_jp2_t * | jp2,
|  | opj_event_mgr_t * | p_manager
| ) |  |
| static

Sets up the procedures to do on reading header after the codestream.

Developpers wanting to extend the library can add their own writing procedures.

References opj_jp2::m_procedure_list, OPJ_FALSE, opj_jp2_read_header_procedure(), opj_procedure_list_add_procedure(), and OPJ_TRUE.

Referenced by opj_jp2_end_decompress().

## ◆ opj_jp2_setup_end_header_writing()

static OPJ_BOOL opj_jp2_setup_end_header_writing | ( | opj_jp2_t * | jp2,
|  | opj_event_mgr_t * | p_manager
| ) |  |
| static

Sets up the procedures to do on writing header after the codestream.

Developpers wanting to extend the library can add their own writing procedures.

References opj_jp2::jpip_on, opj_jp2::m_procedure_list, OPJ_FALSE, opj_jp2_write_jp2c(), opj_procedure_list_add_procedure(), and OPJ_TRUE.

Referenced by opj_jp2_end_compress().

## ◆ opj_jp2_setup_header_reading()

static OPJ_BOOL opj_jp2_setup_header_reading | ( | opj_jp2_t * | jp2,
|  | opj_event_mgr_t * | p_manager
| ) |  |
| static

Sets up the procedures to do on reading header.

Developpers wanting to extend the library can add their own writing procedures.

References opj_jp2::m_procedure_list, OPJ_FALSE, opj_jp2_read_header_procedure(), opj_procedure_list_add_procedure(), and OPJ_TRUE.

Referenced by opj_jp2_read_header().

## ◆ opj_jp2_setup_header_writing()

static OPJ_BOOL opj_jp2_setup_header_writing | ( | opj_jp2_t * | jp2,
|  | opj_event_mgr_t * | p_manager
| ) |  |
| static

Sets up the procedures to do on writing header.

Developpers wanting to extend the library can add their own writing procedures.

References opj_jp2::jpip_on, opj_jp2::m_procedure_list, OPJ_FALSE, opj_jp2_skip_jp2c(), opj_jp2_write_ftyp(), opj_jp2_write_jp(), opj_jp2_write_jp2h(), opj_jpip_skip_iptr(), opj_procedure_list_add_procedure(), and OPJ_TRUE.

Referenced by opj_jp2_start_compress().

## ◆ opj_jpip_skip_iptr()

static OPJ_BOOL opj_jpip_skip_iptr | ( | opj_jp2_t * | jp2,
|  | opj_stream_private_t * | stream,
|  | opj_event_mgr_t * | p_manager
| ) |  |
| static

References opj_jp2::jpip_iptr_offset, OPJ_FALSE, opj_stream_skip(), opj_stream_tell(), and OPJ_TRUE.

Referenced by opj_jp2_setup_header_writing().

## Variable Documentation

## ◆ jp2_header

const opj_jp2_header_handler_t jp2_header[]
| static

Initial value:
= {
{JP2_JP, opj_jp2_read_jp},
{JP2_FTYP, opj_jp2_read_ftyp},
{JP2_JP2H, opj_jp2_read_jp2h}
}
opj_jp2_read_ftyp
static OPJ_BOOL opj_jp2_read_ftyp(opj_jp2_t *jp2, OPJ_BYTE *p_header_data, OPJ_UINT32 p_header_size, opj_event_mgr_t *p_manager)
Reads a a FTYP box - File type box.
Definition: jp2.c:2582
JP2_JP
#define JP2_JP
JPEG 2000 signature box.
Definition: jp2.h:49
JP2_JP2H
#define JP2_JP2H
JP2 header box (super-box)
Definition: jp2.h:51
JP2_FTYP
#define JP2_FTYP
File type box.
Definition: jp2.h:50
opj_jp2_read_jp
static OPJ_BOOL opj_jp2_read_jp(opj_jp2_t *jp2, OPJ_BYTE *p_header_data, OPJ_UINT32 p_header_size, opj_event_mgr_t *p_manager)
Reads a jpeg2000 file signature box.
Definition: jp2.c:2533
opj_jp2_read_jp2h
static OPJ_BOOL opj_jp2_read_jp2h(opj_jp2_t *jp2, OPJ_BYTE *p_header_data, OPJ_UINT32 p_header_size, opj_event_mgr_t *p_manager)
Reads the Jpeg2000 file Header box - JP2 Header box (warning, this is a super box).
Definition: jp2.c:2687

Referenced by opj_jp2_find_handler().

## ◆ jp2_img_header

const opj_jp2_header_handler_t jp2_img_header[]
| static

Initial value:
= {
{JP2_IHDR, opj_jp2_read_ihdr},
{JP2_COLR, opj_jp2_read_colr},
{JP2_BPCC, opj_jp2_read_bpcc},
{JP2_PCLR, opj_jp2_read_pclr},
{JP2_CMAP, opj_jp2_read_cmap},
{JP2_CDEF, opj_jp2_read_cdef}
}
opj_jp2_read_colr
static OPJ_BOOL opj_jp2_read_colr(opj_jp2_t *jp2, OPJ_BYTE *p_colr_header_data, OPJ_UINT32 p_colr_header_size, opj_event_mgr_t *p_manager)
Reads the Color Specification box.
Definition: jp2.c:1459
opj_jp2_read_bpcc
static OPJ_BOOL opj_jp2_read_bpcc(opj_jp2_t *jp2, OPJ_BYTE *p_bpc_header_data, OPJ_UINT32 p_bpc_header_size, opj_event_mgr_t *p_manager)
Reads a Bit per Component box.
Definition: jp2.c:721
JP2_IHDR
#define JP2_IHDR
Image header box.
Definition: jp2.h:52
opj_jp2_read_pclr
static OPJ_BOOL opj_jp2_read_pclr(opj_jp2_t *jp2, OPJ_BYTE *p_pclr_header_data, OPJ_UINT32 p_pclr_header_size, opj_event_mgr_t *p_manager)
Collect palette data.
Definition: jp2.c:1147
JP2_CDEF
#define JP2_CDEF
Channel Definition box.
Definition: jp2.h:58
JP2_BPCC
#define JP2_BPCC
Bits per component box.
Definition: jp2.h:60
opj_jp2_read_cmap
static OPJ_BOOL opj_jp2_read_cmap(opj_jp2_t *jp2, OPJ_BYTE *p_cmap_header_data, OPJ_UINT32 p_cmap_header_size, opj_event_mgr_t *p_manager)
Collect component mapping data.
Definition: jp2.c:1261
opj_jp2_read_ihdr
static OPJ_BOOL opj_jp2_read_ihdr(opj_jp2_t *jp2, OPJ_BYTE *p_image_header_data, OPJ_UINT32 p_image_header_size, opj_event_mgr_t *p_manager)
Reads a IHDR box - Image Header box.
Definition: jp2.c:561
JP2_CMAP
#define JP2_CMAP
Component Mapping box.
Definition: jp2.h:57
JP2_PCLR
#define JP2_PCLR
Palette box.
Definition: jp2.h:56
opj_jp2_read_cdef
static OPJ_BOOL opj_jp2_read_cdef(opj_jp2_t *jp2, OPJ_BYTE *p_cdef_header_data, OPJ_UINT32 p_cdef_header_size, opj_event_mgr_t *p_manager)
Definition: jp2.c:1387
JP2_COLR
#define JP2_COLR
Colour specification box.
Definition: jp2.h:53

Referenced by opj_jp2_img_find_handler().