This makes the functions extensible, as future behavior change flags can be
introduced.
This is strictly speaking not an API break. Only if a user was setting
recursive to anything other than 1 it would now behave differently, but given
these functions have been in the tree for only a few days, the chances for that
are practically zero.
Signed-off-by: James Almer <jamrial@gmail.com>
Add an API function to retrieve am AVExifEntry struct with a given TIFF
tag ID from the AVExifMetadata ifd struct.
Signed-off-by: Leo Izen <leo.izen@gmail.com>
Add an API function that allows popping an exif entry out of the struct
entirely rather than requiring it be replaced with a default value.
Signed-off-by: Leo Izen <leo.izen@gmail.com>
Takes existing code that makes display matricies work with EXIF
orientation tags and expose the conversion as a public API.
Signed-off-by: Leo Izen <leo.izen@gmail.com>
Add FF_API_OLD_EXIF deprecation guard based on lavc version < 62 in
order to allow removing the avpriv_ next major version bump.
Signed-off-by: Leo Izen <leo.izen@gmail.com>
This commit adds a structure to contain parsed EXIF metadata, as well
as code to read and write that struct from/to binary EXIF buffers. Some
internal functions have been moved to exif_internal.h. Code to read
from this new struct and write to an AVDictionary **dict has been added
as well in order to preserve interoperability with existing callers.
The only codec changes so far as of this commit are to call these
interop functions, but in future commits there will be codec changes to
use the new parsing routines instead.
Signed-off-by: Leo Izen <leo.izen@gmail.com>
This makes the enum TiffTypes public by moving it to the public header
exif.h and renaming it to AVTiffDataType, as well as adding an AV_
prefix in front of each of the entry names. This allows callers to use
enum AVTiffDataType without pulling in all of tiff_common.h, as that
header is not public.
Signed-off-by: Leo Izen <leo.izen@gmail.com>
It is only used by exif.c (and e.g. EXIF_TAG_NAME_LENGTH
is an implementation detail anyway).
Also remove the sentinel, as it is used in conjunction
with FF_ARRAY_ELEMS.
Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>
The exif.h header doesn't use anything from tiff.h. We also just need
to include tiff_common.h in .c files where it actually used.
Signed-off-by: Andreas Schneider <asn@cryptomilk.org>
Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>
bytestream.h should be directly included for GetByteContext and not
rely on other headers to include it. It could be removed from there.
Signed-off-by: Andreas Schneider <asn@cryptomilk.org>
Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>
The AVCodecContext is only used for logging, so instead take any valid log context.
This allows reusing the exif functions more easily in avformat.
Signed-off-by: Derek Buitenhuis <derek.buitenhuis@gmail.com>
