FFmpeg
|
Go to the source code of this file.
Functions | |
int | ff_tis_ifd (unsigned tag) |
Returns a value > 0 if the tag is a known IFD-tag. More... | |
unsigned | ff_tget_short (GetByteContext *gb, int le) |
Reads a short from the bytestream using given endianness. More... | |
unsigned | ff_tget_long (GetByteContext *gb, int le) |
Reads a long from the bytestream using given endianness. More... | |
double | ff_tget_double (GetByteContext *gb, int le) |
Reads a double from the bytestream using given endianness. More... | |
unsigned | ff_tget (GetByteContext *gb, int type, int le) |
Reads a byte from the bytestream using given endianness. More... | |
int | ff_tadd_rational_metadata (int count, const char *name, const char *sep, GetByteContext *gb, int le, AVDictionary **metadata) |
Adds count rationals converted to a string into the metadata dictionary. More... | |
int | ff_tadd_long_metadata (int count, const char *name, const char *sep, GetByteContext *gb, int le, AVDictionary **metadata) |
Adds count longs converted to a string into the metadata dictionary. More... | |
int | ff_tadd_doubles_metadata (int count, const char *name, const char *sep, GetByteContext *gb, int le, AVDictionary **metadata) |
Adds count doubles converted to a string into the metadata dictionary. More... | |
int | ff_tadd_shorts_metadata (int count, const char *name, const char *sep, GetByteContext *gb, int le, int is_signed, AVDictionary **metadata) |
Adds count shorts converted to a string into the metadata dictionary. More... | |
int | ff_tadd_bytes_metadata (int count, const char *name, const char *sep, GetByteContext *gb, int le, int is_signed, AVDictionary **metadata) |
Adds count bytes converted to a string into the metadata dictionary. More... | |
int | ff_tadd_string_metadata (int count, const char *name, GetByteContext *gb, int le, AVDictionary **metadata) |
Adds a string of count characters into the metadata dictionary. More... | |
int | ff_tdecode_header (GetByteContext *gb, int *le, int *ifd_offset) |
Decodes a TIFF header from the input bytestream and sets the endianness in *le and the offset to the first IFD in *ifd_offset accordingly. More... | |
int | ff_tread_tag (GetByteContext *gb, int le, unsigned *tag, unsigned *type, unsigned *count, int *next) |
Reads the first 3 fields of a TIFF tag, which are the tag id, the tag type and the count of values for that tag. More... | |
Variables | |
static const uint8_t | type_sizes [14] |
sizes of various TIFF field types (string size = 100) More... | |
static const uint16_t | ifd_tags [] |
TIFF Common Routines
Definition in file tiff_common.h.
int ff_tis_ifd | ( | unsigned | tag | ) |
Returns a value > 0 if the tag is a known IFD-tag.
The return value is the array index + 1 within ifd_tags[].
Definition at line 33 of file tiff_common.c.
Referenced by exif_decode_tag(), and ff_tread_tag().
unsigned ff_tget_short | ( | GetByteContext * | gb, |
int | le | ||
) |
Reads a short from the bytestream using given endianness.
Definition at line 45 of file tiff_common.c.
Referenced by decode_frame(), exif_decode_tag(), exif_parse_ifd_list(), exif_read_values(), ff_tadd_shorts_metadata(), ff_tdecode_header(), ff_tget(), ff_tread_tag(), and tiff_decode_tag().
unsigned ff_tget_long | ( | GetByteContext * | gb, |
int | le | ||
) |
Reads a long from the bytestream using given endianness.
Definition at line 51 of file tiff_common.c.
Referenced by decode_frame(), dng_decode_tiles(), exif_decode_tag(), exif_parse_ifd_list(), exif_read_values(), ff_tadd_long_metadata(), ff_tadd_rational_metadata(), ff_tdecode_header(), ff_tget(), ff_tread_tag(), and tiff_decode_tag().
double ff_tget_double | ( | GetByteContext * | gb, |
int | le | ||
) |
Reads a double from the bytestream using given endianness.
Definition at line 57 of file tiff_common.c.
Referenced by exif_read_values(), ff_tadd_doubles_metadata(), and tiff_decode_tag().
unsigned ff_tget | ( | GetByteContext * | gb, |
int | type, | ||
int | le | ||
) |
Reads a byte from the bytestream using given endianness.
Definition at line 64 of file tiff_common.c.
Referenced by decode_frame(), and tiff_decode_tag().
int ff_tadd_rational_metadata | ( | int | count, |
const char * | name, | ||
const char * | sep, | ||
GetByteContext * | gb, | ||
int | le, | ||
AVDictionary ** | metadata | ||
) |
Adds count rationals converted to a string into the metadata dictionary.
Definition at line 100 of file tiff_common.c.
int ff_tadd_long_metadata | ( | int | count, |
const char * | name, | ||
const char * | sep, | ||
GetByteContext * | gb, | ||
int | le, | ||
AVDictionary ** | metadata | ||
) |
Adds count longs converted to a string into the metadata dictionary.
Definition at line 124 of file tiff_common.c.
int ff_tadd_doubles_metadata | ( | int | count, |
const char * | name, | ||
const char * | sep, | ||
GetByteContext * | gb, | ||
int | le, | ||
AVDictionary ** | metadata | ||
) |
Adds count doubles converted to a string into the metadata dictionary.
Definition at line 145 of file tiff_common.c.
Referenced by add_metadata().
int ff_tadd_shorts_metadata | ( | int | count, |
const char * | name, | ||
const char * | sep, | ||
GetByteContext * | gb, | ||
int | le, | ||
int | is_signed, | ||
AVDictionary ** | metadata | ||
) |
Adds count shorts converted to a string into the metadata dictionary.
Definition at line 166 of file tiff_common.c.
Referenced by add_metadata().
int ff_tadd_bytes_metadata | ( | int | count, |
const char * | name, | ||
const char * | sep, | ||
GetByteContext * | gb, | ||
int | le, | ||
int | is_signed, | ||
AVDictionary ** | metadata | ||
) |
Adds count bytes converted to a string into the metadata dictionary.
Definition at line 188 of file tiff_common.c.
int ff_tadd_string_metadata | ( | int | count, |
const char * | name, | ||
GetByteContext * | gb, | ||
int | le, | ||
AVDictionary ** | metadata | ||
) |
Adds a string of count characters into the metadata dictionary.
Definition at line 209 of file tiff_common.c.
Referenced by add_metadata().
int ff_tdecode_header | ( | GetByteContext * | gb, |
int * | le, | ||
int * | ifd_offset | ||
) |
Decodes a TIFF header from the input bytestream and sets the endianness in *le and the offset to the first IFD in *ifd_offset accordingly.
Definition at line 229 of file tiff_common.c.
Referenced by av_exif_parse_buffer(), and decode_frame().
int ff_tread_tag | ( | GetByteContext * | gb, |
int | le, | ||
unsigned * | tag, | ||
unsigned * | type, | ||
unsigned * | count, | ||
int * | next | ||
) |
Reads the first 3 fields of a TIFF tag, which are the tag id, the tag type and the count of values for that tag.
Afterwards the bytestream is located at the first value to read and *next holds the bytestream offset of the following tag.
Definition at line 254 of file tiff_common.c.
Referenced by tiff_decode_tag().
|
static |
sizes of various TIFF field types (string size = 100)
Definition at line 37 of file tiff_common.h.
Referenced by add_entry(), ff_tread_tag(), and tiff_decode_tag().
|
static |
Definition at line 41 of file tiff_common.h.
Referenced by ff_tis_ifd().