How to fine tune thumbnail generation, setting size, aspect, frames, quality and so on. More...

Typedefs
typedef enum _Ethumb_Thumb_FDO_Size	Ethumb_Thumb_FDO_Size

typedef enum _Ethumb_Thumb_Format	Ethumb_Thumb_Format

typedef enum _Ethumb_Thumb_Aspect	Ethumb_Thumb_Aspect

typedef enum _Ethumb_Thumb_Orientation	Ethumb_Thumb_Orientation

Enumerations
enum	_Ethumb_Thumb_FDO_Size { ETHUMB_THUMB_NORMAL , ETHUMB_THUMB_LARGE }

enum	_Ethumb_Thumb_Format { ETHUMB_THUMB_FDO , ETHUMB_THUMB_JPEG , ETHUMB_THUMB_EET }

enum	_Ethumb_Thumb_Aspect { ETHUMB_THUMB_KEEP_ASPECT , ETHUMB_THUMB_IGNORE_ASPECT , ETHUMB_THUMB_CROP }

enum	_Ethumb_Thumb_Orientation { ETHUMB_THUMB_ORIENT_NONE , ETHUMB_THUMB_ROTATE_90_CW , ETHUMB_THUMB_ROTATE_180 , ETHUMB_THUMB_ROTATE_90_CCW , ETHUMB_THUMB_FLIP_HORIZONTAL , ETHUMB_THUMB_FLIP_VERTICAL , ETHUMB_THUMB_FLIP_TRANSPOSE , ETHUMB_THUMB_FLIP_TRANSVERSE , ETHUMB_THUMB_ORIENT_ORIGINAL }

Functions
EAPI Eina_Bool	ethumb_frame_set (Ethumb e, const char theme_file, const char group, const char swallow)
	Set the Ethumb Frame.

EAPI void	ethumb_frame_get (const Ethumb e, const char theme_file, const char group, const char *swallow)
	Retreives the current ethumb frame of and Ethumb instance.

EAPI void	ethumb_thumb_dir_path_set (Ethumb e, const char path)
	Set the ethumb thumbnails path.

EAPI const char *	ethumb_thumb_dir_path_get (const Ethumb *e)
	Get the ethumb thumbnails path.

EAPI void	ethumb_thumb_category_set (Ethumb e, const char category)
	Set the thumbnails category.

EAPI const char *	ethumb_thumb_category_get (const Ethumb *e)
	Get the thumbnails category.

EAPI void	ethumb_thumb_path_set (Ethumb e, const char path, const char *key)

EAPI void	ethumb_thumb_path_get (Ethumb e, const char path, const char *key)

EAPI void	ethumb_thumb_hash (Ethumb *e)

EAPI void	ethumb_thumb_hash_copy (Ethumb dst, const Ethumb src)

EAPI void	ethumb_thumb_fdo_set (Ethumb *e, Ethumb_Thumb_FDO_Size s)

EAPI void	ethumb_thumb_size_set (Ethumb *e, int tw, int th)
	Set the size of thumbnails.

EAPI void	ethumb_thumb_size_get (const Ethumb e, int tw, int *th)
	Get the size of thumbnails.

EAPI void	ethumb_thumb_format_set (Ethumb *e, Ethumb_Thumb_Format f)
	Set the fileformat of the thumbnails.

EAPI Ethumb_Thumb_Format	ethumb_thumb_format_get (const Ethumb *e)
	Get the fileformat of the thumbnails.

EAPI void	ethumb_thumb_aspect_set (Ethumb *e, Ethumb_Thumb_Aspect aspect)
	Set the aspect ratio policy.

EAPI Ethumb_Thumb_Aspect	ethumb_thumb_aspect_get (const Ethumb *e)
	Get the aspect ratio policy.

EAPI void	ethumb_thumb_orientation_set (Ethumb *e, Ethumb_Thumb_Orientation orientation)
	Set the thumbnail rotation or flip.

EAPI Ethumb_Thumb_Orientation	ethumb_thumb_orientation_get (const Ethumb *e)
	Get the thumbnail rotation.

EAPI void	ethumb_thumb_crop_align_set (Ethumb *e, float x, float y)

EAPI void	ethumb_thumb_crop_align_get (const Ethumb e, float x, float *y)

EAPI void	ethumb_thumb_quality_set (Ethumb *e, int quality)
	Set the thumbnail compression quality.

EAPI int	ethumb_thumb_quality_get (const Ethumb *e)
	Get the thumbnail compression quality.

EAPI void	ethumb_thumb_compress_set (Ethumb *e, int compress)
	Set the compression rate.

EAPI int	ethumb_thumb_compress_get (const Ethumb *e)
	Get the compression rate.

EAPI void	ethumb_video_start_set (Ethumb *e, float start)
	set the video play start point

EAPI float	ethumb_video_start_get (const Ethumb *e)
	get the video play start point

EAPI void	ethumb_video_time_set (Ethumb *e, float time)
	Set the video time (duration) in seconds.

EAPI float	ethumb_video_time_get (const Ethumb *e)
	Get the video time (duration) in seconds.

EAPI void	ethumb_video_interval_set (Ethumb *e, float interval)
	Set the video frame interval, in seconds.

EAPI float	ethumb_video_interval_get (const Ethumb *e)
	Get the video frame interval, in seconds.

EAPI void	ethumb_video_ntimes_set (Ethumb *e, unsigned int ntimes)
	Set the number of times the video loops (if applicable).

EAPI unsigned int	ethumb_video_ntimes_get (const Ethumb *e)
	Get the number of times the video loops (if applicable).

EAPI void	ethumb_video_fps_set (Ethumb *e, unsigned int fps)
	Set the thumbnail framerate.

EAPI unsigned int	ethumb_video_fps_get (const Ethumb *e)
	Get the thumbnail framerate.

EAPI void	ethumb_document_page_set (Ethumb *e, unsigned int page)
	Set the page number to thumbnail in paged documents.

EAPI unsigned int	ethumb_document_page_get (const Ethumb *e)
	Get the page number thumbnailed in paged documents.

Detailed Description

How to fine tune thumbnail generation, setting size, aspect, frames, quality and so on.

Enumeration Type Documentation

◆ _Ethumb_Thumb_FDO_Size

enum _Ethumb_Thumb_FDO_Size

Enumerator
ETHUMB_THUMB_NORMAL	128x128 as defined by FreeDesktop.Org standard
ETHUMB_THUMB_LARGE	256x256 as defined by FreeDesktop.Org standard

◆ _Ethumb_Thumb_Format

enum _Ethumb_Thumb_Format

Enumerator
ETHUMB_THUMB_FDO	PNG as defined by FreeDesktop.Org standard.
ETHUMB_THUMB_JPEG	JPEGs are often smaller and faster to read/write.
ETHUMB_THUMB_EET	EFL's own storage system, supports key parameter.

◆ _Ethumb_Thumb_Aspect

enum _Ethumb_Thumb_Aspect

Enumerator
ETHUMB_THUMB_KEEP_ASPECT	keep original proportion between width and height
ETHUMB_THUMB_IGNORE_ASPECT	ignore aspect and foce it to match thumbnail's width and height
ETHUMB_THUMB_CROP	keep aspect but crop (cut) the largest dimension

◆ _Ethumb_Thumb_Orientation

enum _Ethumb_Thumb_Orientation

Enumerator
ETHUMB_THUMB_ORIENT_NONE	keep orientation as pixel data is
ETHUMB_THUMB_ROTATE_90_CW	rotate 90° clockwise
ETHUMB_THUMB_ROTATE_180	rotate 180°
ETHUMB_THUMB_ROTATE_90_CCW	rotate 90° counter-clockwise
ETHUMB_THUMB_FLIP_HORIZONTAL	flip horizontally
ETHUMB_THUMB_FLIP_VERTICAL	flip vertically
ETHUMB_THUMB_FLIP_TRANSPOSE	transpose
ETHUMB_THUMB_FLIP_TRANSVERSE	transverse
ETHUMB_THUMB_ORIENT_ORIGINAL	use orientation from metadata (EXIF-only currently)

Function Documentation

◆ ethumb_frame_set()

EAPI Eina_Bool ethumb_frame_set	(	Ethumb *	e,
		const char *	theme_file,
		const char *	group,
		const char *	swallow
	)

Set the Ethumb Frame.

This can be used to simulate wood frames in the Thumbnails

Parameters

e	handle of the current thumbnailer.
theme_file	the edje theme file
group	the edje group in theme
swallow	the edje swallow in theme

Returns: EINA_TRUE on success and EINA_FALSE on failure

References edje_object_add(), edje_object_file_set(), edje_object_part_swallow(), edje_object_part_swallow_get(), edje_object_part_unswallow(), EINA_FALSE, EINA_SAFETY_ON_NULL_RETURN_VAL, eina_stringshare_replace(), and EINA_TRUE.

Referenced by ethumb_client_frame_set().

◆ ethumb_frame_get()

EAPI void ethumb_frame_get	(	const Ethumb *	e,
		const char **	theme_file,
		const char **	group,
		const char **	swallow
	)

Retreives the current ethumb frame of and Ethumb instance.

Parameters

e	handle of the current thumbnailer.
theme_file	will be setted with the edje theme
group	will be setted with the edje group
swallow	will be setted with the edje swallow

References EINA_SAFETY_ON_NULL_RETURN.

Referenced by ethumb_client_ethumb_setup().

◆ ethumb_thumb_dir_path_set()

EAPI void ethumb_thumb_dir_path_set	(	Ethumb *	e,
		const char *	path
	)

Set the ethumb thumbnails path.

Parameters

e	handle of the current thumbnailer.
path	The thumbnails path

References eina_file_path_sanitize(), EINA_SAFETY_ON_NULL_RETURN, and eina_stringshare_replace().

Referenced by ethumb_client_dir_path_set().

◆ ethumb_thumb_dir_path_get()

EAPI const char * ethumb_thumb_dir_path_get ( const Ethumb * e )

Get the ethumb thumbnails path.

Parameters

e	handle of the current thumbnailer.

Returns: The thumbnails path for the current thumbnailer

References EINA_SAFETY_ON_NULL_RETURN_VAL.

Referenced by ethumb_client_dir_path_get(), and ethumb_client_ethumb_setup().

◆ ethumb_thumb_category_set()

EAPI void ethumb_thumb_category_set	(	Ethumb *	e,
		const char *	category
	)

Set the thumbnails category.

Parameters

e	handle of the current thumbnailer.
category	the category to set

References EINA_SAFETY_ON_NULL_RETURN, and eina_stringshare_replace().

Referenced by ethumb_client_category_set().

◆ ethumb_thumb_category_get()

EAPI const char * ethumb_thumb_category_get ( const Ethumb * e )

Get the thumbnails category.

Parameters

e	handle of the current thumbnailer

Returns: the current thumbnailer thumbnails category

References EINA_SAFETY_ON_NULL_RETURN_VAL.

Referenced by ethumb_client_category_get(), and ethumb_client_ethumb_setup().

◆ ethumb_thumb_size_set()

EAPI void ethumb_thumb_size_set	(	Ethumb *	e,
		int	tw,
		int	th
	)

Set the size of thumbnails.

Parameters

e	A pointer to an Ethumb object.
tw	Thumbnail width.
th	Thumbnail height.

References EINA_SAFETY_ON_FALSE_RETURN, and EINA_SAFETY_ON_NULL_RETURN.

Referenced by ethumb_client_size_set().

◆ ethumb_thumb_size_get()

EAPI void ethumb_thumb_size_get	(	const Ethumb *	e,
		int *	tw,
		int *	th
	)

Get the size of thumbnails.

Parameters

	e	A pointer to an Ethumb object.
[out]	tw	Pointer to an int to store the thumbnail width.
[out]	th	Pointer to an int to store the thumbnail height.

References EINA_SAFETY_ON_NULL_RETURN.

Referenced by ethumb_client_ethumb_setup(), and ethumb_client_size_get().

◆ ethumb_thumb_format_set()

EAPI void ethumb_thumb_format_set	(	Ethumb *	e,
		Ethumb_Thumb_Format	f
	)

Set the fileformat of the thumbnails.

Thumbnails are sent compressed; possible formats are PNG, JPEG and EET.

Parameters

e	A pointer to an Ethumb object.

References EINA_SAFETY_ON_FALSE_RETURN, EINA_SAFETY_ON_NULL_RETURN, ETHUMB_THUMB_EET, ETHUMB_THUMB_FDO, and ETHUMB_THUMB_JPEG.

Referenced by ethumb_client_format_set().

◆ ethumb_thumb_format_get()

EAPI Ethumb_Thumb_Format ethumb_thumb_format_get ( const Ethumb * e )

Get the fileformat of the thumbnails.

Parameters

e	A pointer to an Ethumb object.

Returns: The thumbnail fileformat

See also: ethumb_thumb_format_set

References EINA_SAFETY_ON_NULL_RETURN_VAL.

Referenced by ethumb_client_ethumb_setup(), and ethumb_client_format_get().

◆ ethumb_thumb_aspect_set()

EAPI void ethumb_thumb_aspect_set	(	Ethumb *	e,
		Ethumb_Thumb_Aspect	aspect
	)

Set the aspect ratio policy.

When the source and thumbnail aspect ratios don't match, this policy sets how to adapt from the former to the latter: resize keeping source aspect ratio, resize ignoring it or crop.

Parameters

e	A pointer to an Ethumb object.
aspect	The new aspect ratio policy.

References EINA_SAFETY_ON_FALSE_RETURN, EINA_SAFETY_ON_NULL_RETURN, ETHUMB_THUMB_CROP, ETHUMB_THUMB_IGNORE_ASPECT, and ETHUMB_THUMB_KEEP_ASPECT.

Referenced by ethumb_client_aspect_set().

◆ ethumb_thumb_aspect_get()

EAPI Ethumb_Thumb_Aspect ethumb_thumb_aspect_get ( const Ethumb * e )

Get the aspect ratio policy.

Parameters

e	A pointer to an Ethumb object.

Returns: The aspect ratio policy.

References EINA_SAFETY_ON_NULL_RETURN_VAL.

Referenced by ethumb_client_aspect_get(), and ethumb_client_ethumb_setup().

◆ ethumb_thumb_orientation_set()

EAPI void ethumb_thumb_orientation_set	(	Ethumb *	e,
		Ethumb_Thumb_Orientation	orientation
	)

Set the thumbnail rotation or flip.

Parameters

e	A pointer to an Ethumb object.
orientation	The new orientation.

References EINA_SAFETY_ON_FALSE_RETURN, EINA_SAFETY_ON_NULL_RETURN, ETHUMB_THUMB_FLIP_HORIZONTAL, ETHUMB_THUMB_FLIP_TRANSPOSE, ETHUMB_THUMB_FLIP_TRANSVERSE, ETHUMB_THUMB_FLIP_VERTICAL, ETHUMB_THUMB_ORIENT_NONE, ETHUMB_THUMB_ORIENT_ORIGINAL, ETHUMB_THUMB_ROTATE_180, ETHUMB_THUMB_ROTATE_90_CCW, and ETHUMB_THUMB_ROTATE_90_CW.

Referenced by ethumb_client_orientation_set().

◆ ethumb_thumb_orientation_get()

EAPI Ethumb_Thumb_Orientation ethumb_thumb_orientation_get ( const Ethumb * e )

Get the thumbnail rotation.

Parameters

e	A pointer to an Ethumb object.

Returns: The current rotation.

References EINA_SAFETY_ON_NULL_RETURN_VAL.

Referenced by ethumb_client_ethumb_setup(), and ethumb_client_orientation_get().

◆ ethumb_thumb_quality_set()

EAPI void ethumb_thumb_quality_set	(	Ethumb *	e,
		int	quality
	)

Set the thumbnail compression quality.

Parameters

e	A pointer to an Ethumb object.
quality	Compression quality (from 0 to 100, 100 being the best; default is 80)

References EINA_SAFETY_ON_NULL_RETURN.

Referenced by ethumb_client_quality_set().

◆ ethumb_thumb_quality_get()

EAPI int ethumb_thumb_quality_get ( const Ethumb * e )

Get the thumbnail compression quality.

Parameters

e	A pointer to an Ethumb object.

Returns: The current compression quality (from 0 to 100, 100 being the best)

References EINA_SAFETY_ON_NULL_RETURN_VAL.

Referenced by ethumb_client_ethumb_setup(), and ethumb_client_quality_get().

◆ ethumb_thumb_compress_set()

EAPI void ethumb_thumb_compress_set	(	Ethumb *	e,
		int	compress
	)

Set the compression rate.

Parameters

e	handle of the current thumbnailer.
compress	the compression rate (in percentage)

References EINA_SAFETY_ON_NULL_RETURN.

Referenced by ethumb_client_compress_set().

◆ ethumb_thumb_compress_get()

EAPI int ethumb_thumb_compress_get ( const Ethumb * e )

Get the compression rate.

Parameters

e	handle of the current thumbnailer.

Returns: the compression rate (in percentage)

References EINA_SAFETY_ON_NULL_RETURN_VAL.

Referenced by ethumb_client_compress_get(), and ethumb_client_ethumb_setup().

◆ ethumb_video_start_set()

EAPI void ethumb_video_start_set	(	Ethumb *	e,
		float	start
	)

set the video play start point

Set the start point of video thumbnail

Parameters

e	handle of the current thumbnailer.
start	the start point (float from 0.0 to 1.0)

References EINA_SAFETY_ON_FALSE_RETURN, and EINA_SAFETY_ON_NULL_RETURN.

Referenced by ethumb_client_video_start_set().

◆ ethumb_video_start_get()

EAPI float ethumb_video_start_get ( const Ethumb * e )

get the video play start point

Get the start point of video thumbnail

Parameters

e	handle of the current thumbnailer.

Returns: the start point (float from 0.0 to 1.0)

References EINA_SAFETY_ON_NULL_RETURN_VAL.

Referenced by ethumb_client_ethumb_setup().

◆ ethumb_video_time_set()

EAPI void ethumb_video_time_set	(	Ethumb *	e,
		float	time
	)

Set the video time (duration) in seconds.

Parameters

e	handle of the current thumbnailer.
time	the video duration in seconds

References EINA_SAFETY_ON_NULL_RETURN.

Referenced by ethumb_client_video_time_set().

◆ ethumb_video_time_get()

EAPI float ethumb_video_time_get ( const Ethumb * e )

Get the video time (duration) in seconds.

Parameters

e	handle of the current thumbnailer.

Returns: the video duration in seconds

References EINA_SAFETY_ON_NULL_RETURN_VAL.

Referenced by ethumb_client_ethumb_setup().

◆ ethumb_video_interval_set()

EAPI void ethumb_video_interval_set	(	Ethumb *	e,
		float	interval
	)

Set the video frame interval, in seconds.

This is useful for animated thumbnail and will define skip time before going to the next frame. Note that video backends might not be able to precisely skip that amount as it will depend on various factors, including video encoding.

Parameters