Grok 10.0.0
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#include "grok.h"
Go to the source code of this file.
Typedefs | |
typedef grk_object | grk_stream |
typedef size_t(* | grk_stream_read_fn) (uint8_t *buffer, size_t numBytes, void *user_data) |
typedef size_t(* | grk_stream_write_fn) (const uint8_t *buffer, size_t numBytes, void *user_data) |
typedef bool(* | grk_stream_seek_fn) (uint64_t numBytes, void *user_data) |
typedef void(* | grk_stream_free_user_data_fn) (void *user_data) |
Functions | |
void | grk_stream_set_read_function (grk_stream *stream, grk_stream_read_fn func) |
Set read function. More... | |
void | grk_stream_set_write_function (grk_stream *stream, grk_stream_write_fn func) |
Set write function. More... | |
void | grk_stream_set_seek_function (grk_stream *stream, grk_stream_seek_fn func) |
Set (absolute) seek function (stream must be seekable) More... | |
void | grk_stream_set_user_data (grk_stream *stream, void *data, grk_stream_free_user_data_fn func) |
Set user data for JPEG 2000 stream. More... | |
void | grk_stream_set_user_data_length (grk_stream *stream, uint64_t data_length) |
Set the length of the user data for the stream. More... | |
grk_stream * | grk_stream_create_file_stream (const char *fname, size_t buffer_size, bool is_read_stream) |
Create stream from a file identified with its filename with a specific buffer size. More... | |
grk_stream * | grk_stream_create_mem_stream (uint8_t *buf, size_t buffer_len, bool ownsBuffer, bool is_read_stream) |
Create stream from buffer. More... | |
size_t | grk_stream_get_write_mem_stream_length (grk_stream *stream) |
Get length of memory stream. More... | |
grk_codec * | grk_compress_create (GRK_CODEC_FORMAT format, grk_stream *stream) |
Creates a J2K/JP2 compression codec. More... | |
bool | grk_compress_start (grk_codec *codec) |
Start compressing image. More... | |
typedef grk_object grk_stream |
typedef void(* grk_stream_free_user_data_fn) (void *user_data) |
typedef size_t(* grk_stream_read_fn) (uint8_t *buffer, size_t numBytes, void *user_data) |
typedef bool(* grk_stream_seek_fn) (uint64_t numBytes, void *user_data) |
typedef size_t(* grk_stream_write_fn) (const uint8_t *buffer, size_t numBytes, void *user_data) |
grk_codec * grk_compress_create | ( | GRK_CODEC_FORMAT | format, |
grk_stream * | stream | ||
) |
Creates a J2K/JP2 compression codec.
format | output format : j2k or jp2 |
stream | JPEG 2000 stream |
References GrkCodec::compressor_, GRK_CODEC_J2K, GRK_CODEC_JP2, and GrkCodec::obj.
Referenced by grk_compress_init().
bool grk_compress_start | ( | grk_codec * | codec | ) |
Start compressing image.
codec | compression codec |
References GrkCodec::getImpl().
Referenced by grk_compress_init().
grk_stream * grk_stream_create_file_stream | ( | const char * | fname, |
size_t | buffer_size, | ||
bool | is_read_stream | ||
) |
Create stream from a file identified with its filename with a specific buffer size.
fname | the name of the file to stream |
buffer_size | size of the chunk used to stream |
is_read_stream | whether the stream is a read stream (true) or not (false) |
References grk_decompress_buffer_detect_format(), grk::GRK_ERROR(), grk_get_data_length_from_file(), grk_read_from_file(), grk_seek_in_file(), grk_stream_new(), grk_stream_set_read_function(), grk_stream_set_seek_function(), grk_stream_set_user_data(), grk_stream_set_user_data_length(), grk_stream_set_write_function(), grk_write_to_file(), and grkFree_file().
Referenced by grk_compress_init().
grk_stream * grk_stream_create_mem_stream | ( | uint8_t * | buf, |
size_t | buffer_len, | ||
bool | ownsBuffer, | ||
bool | is_read_stream | ||
) |
Create stream from buffer.
buf | buffer |
buffer_len | length of buffer |
ownsBuffer | if true, library will delete[] buffer. Otherwise, it is the caller's responsibility to delete the buffer |
is_read_stream | whether the stream is a read stream (true) or not (false) |
References grk::create_mem_stream().
Referenced by grk_compress_init(), and grk_decompress_create_from_buffer().
size_t grk_stream_get_write_mem_stream_length | ( | grk_stream * | stream | ) |
Get length of memory stream.
stream | memory stream |
References grk::get_mem_stream_offset().
void grk_stream_set_read_function | ( | grk_stream * | stream, |
grk_stream_read_fn | func | ||
) |
Set read function.
stream | JPEG 2000 stream |
func | read function |
References GROK_STREAM_STATUS_INPUT.
Referenced by grk_stream_create_file_stream(), and grk::set_up_mem_stream().
void grk_stream_set_seek_function | ( | grk_stream * | stream, |
grk_stream_seek_fn | func | ||
) |
Set (absolute) seek function (stream must be seekable)
stream | JPEG 2000 stream |
func | (absolute) seek function. |
Referenced by grk_stream_create_file_stream(), and grk::set_up_mem_stream().
void grk_stream_set_user_data | ( | grk_stream * | stream, |
void * | data, | ||
grk_stream_free_user_data_fn | func | ||
) |
Set user data for JPEG 2000 stream.
stream | JPEG 2000 stream |
data | user data |
func | function to free data when grk_object_unref() is called. |
Referenced by grk::create_mapped_file_read_stream(), grk::create_mapped_file_write_stream(), grk::create_mem_stream(), and grk_stream_create_file_stream().
void grk_stream_set_user_data_length | ( | grk_stream * | stream, |
uint64_t | data_length | ||
) |
Set the length of the user data for the stream.
stream | JPEG 2000 stream |
data_length | length of data. |
Referenced by grk_stream_create_file_stream(), and grk::set_up_mem_stream().
void grk_stream_set_write_function | ( | grk_stream * | stream, |
grk_stream_write_fn | func | ||
) |
Set write function.
stream | JPEG 2000 stream |
func | write function |
References GROK_STREAM_STATUS_OUTPUT.
Referenced by grk_stream_create_file_stream(), and grk::set_up_mem_stream().