CN104093063B - The method and apparatus for reducing title - Google Patents
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- CN104093063B CN104093063B CN201410346247.9A CN201410346247A CN104093063B CN 104093063 B CN104093063 B CN 104093063B CN 201410346247 A CN201410346247 A CN 201410346247A CN 104093063 B CN104093063 B CN 104093063B
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Abstract
A kind of method and apparatus for reducing title are provided, methods described includes：Obtain the subtitle file of the multimedia file；Header data to the subtitle file is parsed, and obtains the global property of the subtitle file；Obtain current subtitle row data and current subtitle row data are parsed, obtain string attribute in the row attribute of current subtitle row data and the row of current subtitle row data；The current subtitle row data are divided at least one text filed, each is text filed to include a merging attribute；Each attribute type that the merging attribute includes is created as a corresponding attribute item；The all properties item that the current subtitle row data are included is created as the data syntax structure of the current subtitle row data；Data syntax structure according to the current subtitle row data is reduced to current subtitle row data.Methods described and device are directed to captions row data creation data syntax structure, effectively reduce the occupancy of memory headroom.
Description
Technical field
This invention relates generally to parsing and reduction to title, more particularly, it is related to a kind of reduction captions
The method and apparatus of attribute.
Background technology
Captions refer to non-visual contents such as the dialogues inside written form display TV, film, stage works, also refer to shadow
It is regarded as the word of product post-production.With the development of multimedia technology, can add many for subtitle file when subtitle file is made
The title of type, to enrich the result of broadcast of captions.
It is existing reduction title method be：First by the subtitle file to multimedia file (for example, embedded word
Curtain or plug-in captions) parsed, captioned test and title are obtained, title is gone back using subtitle template then
It is former.When being reduced to title using the above method, when subtitle file updates, new captioned test replaces subtitle template
In old captioned test, and keep title constant.This is presently the most conventional captions alternative patterns, simple and fast.
If there is polytype title in subtitle file, title is gone back by subtitle template
After original, the subtitle file for restoring will be changed into unified title, therefore, the method for existing reduction title cannot be right
Polytype title present in subtitle file is reduced well.If additionally, will exist in subtitle file
Polytype title all reduced, then need to make and polytype captions present in whole subtitle file belong to
The corresponding multiple subtitle templates of property, so can excessive committed memory space.
The content of the invention
The purpose of exemplary embodiment of the present is regarding to the issue above, it is proposed that a kind of method for reducing title
And device, to read, reduce the title of captions row data in real time, abandon the use to subtitle template.
The one side of exemplary embodiment of the present provides a kind of method for reducing title, and methods described includes：From
The subtitle file of the multimedia file is obtained in multimedia file；Header data to the subtitle file is parsed, and is obtained
To the global property of the subtitle file；Obtain current subtitle row data and current subtitle row data are parsed, worked as
String attribute in the row attribute of preceding captions row data and the row of current subtitle row data；The current subtitle row data are divided
For at least one text filed, wherein, each is text filed to include a merging attribute, and the merging attribute is the overall situation
The superposition of string attribute in attribute, the row attribute, the row；Each attribute type that the merging attribute is included
It is created as a corresponding attribute item；The all properties that the current subtitle row data are included are created as the current word
The data syntax structure of curtain row data；Data syntax structure according to the current subtitle row data is entered to current subtitle row data
Row reduction.
Alternatively, the current subtitle row data are divided into described at least one text filed step may include：Inspection
Whether survey in the current subtitle row data comprising unique identifier；When in the current subtitle row data do not include specific identifier
Fu Shi, by the current subtitle row data be defined as one it is text filed；When in the current subtitle row data include specific mark
When knowing symbol, using the unique identifier as text filed decollator is divided, the current subtitle row data are divided into
It is multiple text filed, wherein, the unique identifier is to be marked between the two neighboring character of the current subtitle row data
Two neighboring character has the symbol of interior string attribute of not going together.
Alternatively, the attribute item may include the text filed a kind of attribute type for including, described text filed
Starting character position and termination character position, a kind of property value of attribute type.
Alternatively, during the data syntax structure may include the form of the subtitle file, the current subtitle row data
Including the number of all properties, all properties that include of the current subtitle row data.
Alternatively, any one text filed merging attribute for including can be obtained by following steps：To described complete
Property under a bureau and the row attribute are merged, and obtain the text filed initial attribute；To the initial attribute and the row
Interior string attribute is merged, and obtains the text filed merging attribute.
Alternatively, the global property and the row attribute are merged, obtains the text filed initial attribute
The step of may include：Detect the attribute type with the presence or absence of row attribute in the attribute type of the global property；When the overall situation
When there is the attribute type of row attribute in the attribute type of attribute, then updated with the property value of the attribute type of the row attribute
Property value in the attribute type of the global property, using the global property after Update attribute value as initial attribute；When described
When in the attribute type of global property in the absence of the attribute type of row attribute, then by the attribute type and the row of the row attribute
The property value of the attribute type of attribute is added in global property, using the global property after addition as initial attribute.
Alternatively, string attribute in the initial attribute and the row is merged, obtains described text filed
The step of merging attribute may include：Detect in the attribute type of the initial attribute with the presence or absence of string attribute in the row
Attribute type；When there is the attribute type of string attribute in the row in the attribute type of the initial attribute, then institute is used
The property value of the attribute type of string attribute in row is stated come the property value in the attribute type for updating the initial attribute, will more
Initial attribute after new property value is used as the merging attribute；When in the attribute type of the initial attribute in the absence of in the row
During the attribute type of string attribute, then by string attribute in the attribute type and the row of string attribute in the row
The property value of attribute type is added in initial attribute, using the initial attribute after addition as the merging attribute.
Alternatively, the data syntax structure according to the current subtitle row data is reduced to current subtitle row data
Step may include：The ith attribute that a data syntax structure that () obtains the current subtitle row data includes, 1≤i≤
The initial value of m, i is the number that 1, m is all properties that the current subtitle row data include, m is the natural number more than zero；
B () is based on the attribute type that ith attribute item includes, the property value of the attribute type includes to ith attribute item
The character that starting character position includes with termination character position is reduced；Whether (c) detection i is equal to m, as i ≠ m, makes
I=i+1 is obtained, and returns to execution step (a), as i=m, terminate the step of being reduced to current subtitle row data.
The another aspect of exemplary embodiment of the present provides a kind of device for reducing title, and described device includes：
Subtitle file acquiring unit, obtains the subtitle file of the multimedia file from multimedia file；First resolution unit, to institute
The header data for stating subtitle file is parsed, and obtains the global property of the subtitle file；Second resolution unit, obtains current
Captions row data are simultaneously parsed to current subtitle row data, obtain the row attribute and current subtitle line number of current subtitle row data
According to row in string attribute；Division unit, it is text filed by being divided at least one in the current subtitle row data, its
In, each is text filed to include a merging attribute, and the merging attribute is the global property, the row attribute, described
The superposition of string attribute in row；Attribute item creating unit, each attribute type that the merging attribute includes is created
It is a corresponding attribute item；Data syntax Structure Creating unit, all properties that the current subtitle row data are included
Item is created as the data syntax structure of the current subtitle row data；Title reduction unit, according to the current subtitle row
The data syntax structure of data is reduced to current subtitle row data.
Alternatively, division unit may include：Whether detection unit, specific mark is included in the detection current subtitle row data
Know symbol；Text filed determining unit, when unique identifier is not included in the current subtitle row data, by the current subtitle
Row data be defined as one it is text filed, when in the current subtitle row data include unique identifier when, by the specific mark
Symbol is known as dividing text filed decollator, and it is text filed that the current subtitle row data are divided into multiple, wherein, institute
It is that two neighboring character is marked between the two neighboring character of the current subtitle row data with difference to state unique identifier
The symbol of string attribute in row.
Alternatively, the attribute item may include the text filed a kind of attribute type for including, an attribute
The property value of type, the text filed starting character position and termination character position.
Alternatively, during the data syntax structure may include the form of the subtitle file, the current subtitle row data
Including the number of all properties, all properties that include of the current subtitle row data.
Alternatively, division unit can also include：Initial attribute determining unit, enters to the global property and the row attribute
Row merges, and obtains the text filed initial attribute；Merge attribute determining unit, to word in the initial attribute and the row
Symbol string attribute is merged, and obtains the text filed merging attribute.
Alternatively, initial attribute determining unit can detect in the attribute type of the global property with the presence or absence of row attribute
Attribute type, when there is the attribute type of row attribute in the attribute type of the global property, then with the category of the row attribute
The property value of property type come the property value in the attribute type for updating the global property, by the global property after Update attribute value
As initial attribute, when in the attribute type of the global property in the absence of the attribute type of row attribute, then the row is belonged to
The property value of the attribute type of property and the attribute type of the row attribute is added in global property, by the global property after addition
As initial attribute.
Alternatively, merge attribute determining unit to can detect in the attribute type of the initial attribute with the presence or absence of in the row
The attribute type of string attribute, when the Attribute class that there is string attribute in the row in the attribute type of the initial attribute
During type, then with the property value of the attribute type of string attribute in the row come in the attribute type for updating the initial attribute
Property value, using the initial attribute after Update attribute value as the merging attribute, when in the attribute type of the initial attribute not
When there is the attribute type of string attribute in the row, then by the attribute type and the row of string attribute in the row
The property value of the attribute type of string attribute is added in initial attribute, and initial attribute after addition is merged into category as described
Property.
Alternatively, title reduction unit can obtain what the data syntax structure of the current subtitle row data included
Ith attribute, the initial value of 1≤i≤m, i is the number that 1, m is all properties that the current subtitle row data include,
M is the natural number more than zero, and attribute type, the property value of the attribute type included based on ith attribute item are to i-th
The character that the starting character position that attribute item includes includes with termination character position is reduced, and whether detection i is equal to m,
As i ≠ m so that i=i+1, and obtain the ith attribute that the data syntax structure of the current subtitle row data includes
, as i=m, end is reduced to current subtitle row data.
Using the method and apparatus of the reduction title of exemplary embodiment of the present, by by captions row data creation
It is a data syntactic structure, and captions row data are reduced according to the data syntax structure, can effectively reduces internally
The occupancy in space is deposited, the real-time to title reduction is improved.
Brief description of the drawings
By the detailed description for carrying out below in conjunction with the accompanying drawings, above and other purpose of exemplary embodiment of the present, spy
Point and advantage will become apparent, wherein：
Fig. 1 is the flow chart of the method for showing reduction title according to an exemplary embodiment of the present invention；
Fig. 2 is to show flow the step of reduced to current subtitle row data according to an exemplary embodiment of the present invention
Figure；
Fig. 3 is the block diagram of the device for showing reduction title according to an exemplary embodiment of the present invention.
Specific embodiment
The embodiment of the present invention is described in detail now, its example is illustrated in the accompanying drawings, wherein, identical label begins
Same parts are represented eventually.Below with reference to the accompanying drawings embodiment is described to explain the present invention.
Fig. 1 is the flow chart of the method for showing reduction title according to an exemplary embodiment of the present invention.
Reference picture 1, in step slo, obtains the subtitle file of the multimedia file from multimedia file.Here,
As an example, subtitle file can be the embedded captions or plug-in captions of multimedia file.Here, using existing decoding side
Method is parsed to multimedia file, obtains the subtitle file of multimedia file.
In step S20, the header data to the subtitle file is parsed, and obtains the global category of the subtitle file
Property.Typically when subtitle file is made, captions producer can pre-define captions text in the header data of subtitle file
The global property (for example, global property 1, global property 2 ... ..., global property N) of part.By the head number to subtitle file
According to being parsed, you can obtain the global property of subtitle file, here, can be using existing analytic method come from subtitle file
The global property of subtitle file is parsed in header data.
Alternatively, the title of subtitle file may include text attribute, renderer property, special efficacy attribute.For example, text belongs to
Property may include the attribute types such as font, font size, font color, background color；Renderer property may include caption area background color,
The attribute types such as character edge sharpening, inside and outside back gauge；The attribute types such as special efficacy attribute may include to enter, wipe, mosaic.This
In, at least one of above-mentioned attribute type is may include in each global property.
In step s 30, current subtitle row data are obtained and the current subtitle row data is parsed, obtain current
String attribute in the row attribute of captions row data and the row of current subtitle row data.Alternatively, the action scope of row attribute is word
The all characters included in curtain row data, the action scope of string attribute is the bebinning character of string attribute in the row in row
The character included in position and termination character position.Here, captions row data refer to the corresponding caption data of setting time section, and
The final a line captions for showing are not implied that.
In one example, subtitle file may include following content：
Header data：
Global property 1：
Global property 2：
……
Global property N：
Time period 1：Global property 1：Row attribute：<String attribute 1 in row, starting character position>Character string 1<Terminate word
Symbol position><String attribute 2 in row, starting character position>Character string 2<Termination character position>
……
Time period N：Global property N：Row attribute：<String attribute 1 in row, starting character position>Character string 1<Terminate word
Symbol position>……<String attribute M, starting character position in row>Character string M<Termination character position>
In the examples described above, 1~time period of time period N represents N number of time period of setting, with the corresponding captions of time period 1
Data：Global property 1；Row attribute；<String attribute 1 in row, starting character position>Character string 1<Termination character position><OK
Interior string attribute 2, starting character position>Character string 2<Termination character position>, as one captions row data are (hereinafter referred to as
First captions row data).
Based on above-mentioned form, finally it is shown as with the first captions row data：As a example by.Assuming that global
Attribute 1 is font attribute type (for example, regular script), and the row attribute of the first captions row data is font size attribute type (for example, No. four
Word), string attribute 1 is font format attribute type (for example, italic) in row, and the interior string attribute 2 of row belongs to for font format
Property type (for example, underscore), then the corresponding first captions row data of the time period 1 in subtitle file may include following interior
Hold：
00:10~00:40：Font attribute type：Font size attribute type：<Font format attribute type, 1>Samsung<2><Word
Physique formula attribute type, 3>China Electronics<6>.
After being parsed to the first captions row data in step s 30, the row attribute of available first captions row data is
Font size attribute type (for example, No. four words), and string attribute in two rows of current subtitle row data is obtained, character string in row
Attribute 1 is font format attribute (for example, italic), and starting character position is the 1st character in row, and termination character position is row
The 2nd interior character；String attribute 2 is font format attribute (for example, underscore) in row, and starting character position is in row
3rd character, termination character position is the 6th character in row.
In step s 40, that the current subtitle row data are divided into at least one is text filed.Alternatively, each text
A merging attribute is may include in one's respective area, the merging attribute can be global property, the current subtitle row data of subtitle file
Row attribute, in the row of current subtitle row data string attribute superposition.
Alternatively, the current subtitle row data are divided into described at least one text filed step may include：Inspection
Whether survey in the current subtitle row data comprising unique identifier；When in the current subtitle row data do not include specific identifier
Fu Shi, by the current subtitle row data be defined as one it is text filed；When in the current subtitle row data include specific mark
When knowing symbol, using the unique identifier as text filed decollator is divided, the current subtitle row data are divided into
It is multiple text filed.Here, unique identifier can be to mark institute between the two neighboring character of the current subtitle row data
Stating two neighboring character has the symbol of interior string attribute of not going together.
In one example, finally it is shown as with the first captions row data with step S30：
Example as a example by.Particularly, in the first captions row data comprising string attribute in two rows, then can in each row character
Unique identifier is set before the starting character position of string attribute, comprising unique identifier in the first captions row data are detected
When, can be divided with to the first captions row data using unique identifier as text filed decollator is divided.
Particularly, the starting character position of string attribute is respectively the 1st in two rows in the first captions row data
Character and the 3rd character, then be respectively arranged with two unique identifiers at the 1st character and at the 3rd character, when detecting the 1st word
Before symbol include unique identifier when, then by the 1st character and the later character of the 1st character be divided into one it is text filed, when
When before detecting the 3rd character comprising unique identifier, then the 3rd character and the later character of the 3rd character are divided into another
It is individual text filed.Based on above-mentioned dividing mode can by the first captions row data be divided into two it is text filed, first is text filed
Starting character position be row in the 1st character, termination character position be row in the 2nd character, second is text filed
Starting character position is the 3rd character in row, and termination character position is the 6th character in row.
Alternatively, any one text filed merging attribute for including can be obtained by following steps：To captions text
The global property of part and the row attribute of current subtitle row data are merged, and obtain the text filed initial attribute；To institute
State string attribute in the row of initial attribute and current subtitle row data to merge, obtain the text filed merging category
Property.
For example, the row attribute of the global property and current subtitle row data to subtitle file is merged, the text is obtained
The step of initial attribute of one's respective area, may include：Detect the attribute with the presence or absence of row attribute in the attribute type of the global property
Type；When there is the attribute type of row attribute in the attribute type of the global property, then with the Attribute class of the row attribute
The property value of type come the property value in the attribute type for updating the global property, using the global property after Update attribute value as
Initial attribute；When in the attribute type of the global property in the absence of the attribute type of row attribute, then by the row attribute
The property value of the attribute type of attribute type and the row attribute is added in global property, using the global property after addition as
Initial attribute.
For example, being merged to string attribute in the row of the initial attribute and current subtitle row data, obtain described
The step of text filed merging attribute, may include：Detect in the attribute type of the initial attribute with the presence or absence of word in the row
Accord with the attribute type of string attribute；When the attribute type that there is string attribute in the row in the attribute type of the initial attribute
When, then with the property value of the attribute type of string attribute in the row come the category in the attribute type for updating the initial attribute
Property value, using the initial attribute after Update attribute value as the merging attribute；Do not deposited when in the attribute type of the initial attribute
In the row during attribute type of string attribute, then by word in the attribute type and the row of string attribute in the row
The property value for according with the attribute type of string attribute is added in initial attribute, and initial attribute after addition is merged into category as described
Property.
In one example, finally it is shown as with the first captions row data with step S30：
Example as a example by.Particularly, after execution of step S20, the global property 1 that can obtain the subtitle file in example is font
Attribute type (for example, regular script).After execution of step S30, the row attribute that can obtain the first captions row data is font size attribute class
Type (for example, No. four words), string attribute in two rows of the first captions row data, string attribute 1 is font format in row
String attribute 2 is font format attribute type (for example, underscore), and the first word in attribute type (for example, italic), row
Curtain row data be divided into two it is text filed, correspondingly the first captions row data have two merging attributes.
Here, introduced as a example by determining the first text filed merging attribute and obtain any one text filed middle bag
The step of merging attribute for including.Particularly, because global property 1 is font attribute type (for example, regular script), and the first captions
The row attribute of row data is font size attribute type (for example, No. four words), then show in the attribute type of global property 1 in the absence of the
, then be added to the property value of font size attribute type and font size attribute type entirely by the attribute type of the row attribute of one captions row data
In property 1 under a bureau, the global property 1 of property value of font size attribute type and font size attribute type will be with the addition of as initial attribute.
In the case, initial attribute includes font attribute type (for example, regular script) and font size attribute type (for example, No. four words).
Then, because initial attribute includes font attribute type (for example, regular script) and font size attribute type (for example, four
Number word), and string attribute 1 is font format attribute type (for example, italic) in row, then show in initial attribute in the absence of row
, then be added to the property value of font format attribute type and font format attribute type in initial attribute by interior string attribute 1,
The initial attribute that the property value of font format attribute type and font format attribute type will be with the addition of is text filed as first
Merging attribute.
From above-mentioned example, the starting character position of the first text filed merging attribute is the 1st character in row,
Termination character position is the 2nd character in row, and the attribute type of the first text filed merging attribute includes font attribute class
Type, font size attribute type, font format attribute type, i.e. in the first captions row dataTwo merging category of character
Property is regular script, No. four, italic.Similarly, the attribute type of the second text filed merging attribute includes font attribute type, word
Number attribute type, font format attribute type, i.e. in the first captions row dataFour merging category of character
Property be regular script, No. four, underline.
In step s 50, each attribute type that the merging attribute includes is created as a corresponding attribute
.Alternatively, the attribute item may include the text filed a kind of attribute type for including, a kind of attribute type
Property value, the text filed starting character position and termination character position.
In one example, finally it is shown as with the first captions row data with step S30：
Example as a example by, the font format attribute type that the first text filed merging attribute includes is created as attribute item, the category
Property include：Font format attribute type, the first text filed starting character position (that is, the 1st character in row), end
Character position (that is, the 2nd character in row), the property value of font format attribute type.
In step S60, all properties that the current subtitle row data are included are created as the current subtitle
The data syntax structure of row data.Alternatively, the data syntax structure may include the form of the subtitle file, described current
The all properties that the number of all properties that captions row data include, the current subtitle row data include.
In one example, finally it is shown as with the first captions row data with step S30：
Example as a example by, all properties that current subtitle row data are included item is created as the data syntax knot of current subtitle row data
Structure.Particularly, the data syntax structure of current subtitle row data may include：The form (for example, ssa) of subtitle file, attribute
The content that the number 6 of item, each attribute item include.
Specifically, the first attribute item includes：Font format attribute type, the 2nd in the 1st character, row in row
Character, the property value of font format attribute type；Second attribute item includes：Font size attribute type, the 1st character, OK in row
The 2nd interior character, the property value of font size attribute type；3rd attribute item includes：Font attribute type, the 1st word in row
The 2nd character in symbol, row, the property value of font attribute type；4th attribute item includes：Font attribute type, the in row the 3rd
The 6th character in individual character, row, the property value of font attribute type；5th attribute item includes：Font size attribute type, in row
The 3rd character, the 6th character in row, the property value of font size attribute type；6th attribute item includes：Font format attribute
Type, the 3rd character, the 6th character in row, the property value of font format attribute type in row.
In step S70, the data syntax structure according to the current subtitle row data is to the current subtitle row data
Reduced.
Fig. 2 is to show flow the step of reduced to current subtitle row data according to an exemplary embodiment of the present invention
Figure.
Reference picture 2, in step s 701, obtains the data syntax structure of the current subtitle row data includes i-th
Individual attribute item.Here, the initial value of 1≤i≤m, i is the individual of all properties that the current subtitle row data include for 1, m
Number, m is the natural number more than zero.
In step S702, attribute type, the property value of the attribute type included based on ith attribute item are to the
The character that the starting character position that i attribute item includes includes with termination character position is reduced.For example, can be by i-th
The attribute type that individual attribute item includes is applied in the starting character position and termination character position that ith attribute item includes
Including character on, and the property value of the attribute type is updated to the ith attribute property value that includes of item.
In step S703, whether detection i is equal to m.As i ≠ m so that i=i+1, and return to execution step S701.This
The method of the reduction title of invention exemplary embodiment is that captions row data are reduced one by one, as i=m, is then terminated
The step of current subtitle row data are reduced, and return to the execution step S30 next captions row data of acquisition.
In one example, finally it is shown as with the first captions row data with step S30：
Example as a example by.Particularly, due to including 6 attribute items in the data syntax structure of the first captions row data altogether, then can be first
Obtain first attribute item in the data syntax structure of current subtitle row data, and the word included using first attribute item
Physique formula attribute type, the property value of font format attribute type are carried out to the 2nd character in the 1st character and row in row
Reduction, then detects whether i is equal to m, due to i=1 and m=6 here, then i ≠ m so that i=i+1, i.e. i=2 continue to obtain the
Second attribute item in the data syntax structure of one captions row data, until during i=m=6, being gone back to the first captions row data
Original terminates, then the next captions row data of continuation acquisition, and repeats the reduction title of exemplary embodiment of the present
Step S30~step S70, until whole caption data reduction are finished.
Moreover, it should be understood that the method for above-mentioned reduction title according to an exemplary embodiment of the present invention can be implemented
It is the computer code in computer readable recording medium storing program for performing.Those skilled in the art can be according to the description to the above method come real
The existing computer code.The upper of exemplary embodiment of the present is realized when the computer code is performed in a computer
State method.
Fig. 3 is the block diagram of the device for showing reduction title according to an exemplary embodiment of the present invention.
As shown in figure 3, the device of reduction title according to an exemplary embodiment of the present invention includes：Subtitle file is obtained
Unit 10, the first resolution unit 20, the second resolution unit 30, division unit 40, attribute item creating unit 50, data syntax structure
Creating unit 60, title reduction unit 70.These units can be logical by digital signal processor, field programmable gate array etc.
Realized with hardware processor, can also be realized by dedicated hardware processors such as special chips, can also completely pass through computer
Program is realized with software mode.
Specifically, subtitle file acquiring unit 10 obtains the captions text of the multimedia file from multimedia file
Part.Here, as an example, the subtitle file can be the embedded captions or plug-in captions of multimedia file.Here, captions text
Part acquiring unit 10 can realize parsing multimedia file for existing decoder, obtain the captions of multimedia file
File.
The header data of first 20 pairs of subtitle files of resolution unit is parsed, and obtains the overall situation of the subtitle file
Attribute.Typically when subtitle file is made, captions producer can pre-define captions in the header data of subtitle file
The global property (for example, global property 1, global property 2 ... ..., global property N) of file.By the head to subtitle file
Data are parsed, you can obtain the global property of subtitle file, and here, the first resolution unit 20 can utilize existing parsing side
Method parses the global property of subtitle file from the header data of subtitle file.
Alternatively, the title of the subtitle file may include text attribute, renderer property, special efficacy attribute.For example, literary
This attribute may include the attribute types such as font, font size, font color, background color；Renderer property may include caption area background
The attribute types such as color, character edge sharpening, inside and outside back gauge；The Attribute class such as special efficacy attribute may include to enter, wipe, mosaic
Type.Here, may include at least one of above-mentioned attribute type in each global property.
Second resolution unit 30 obtains current subtitle row data and current subtitle row data is parsed, and obtains current word
String attribute in the curtain row attribute of row data and the row of current subtitle row data.Here, captions row data refer to setting time
The corresponding caption data of section, and do not imply that a line captions of final display.Alternatively, the action scope of row attribute is captions line number
The all characters included in, row in string attribute action scope be in the row starting character position of string attribute and
The character included in termination character position.
Due in Fig. 1 the step of S30 in the function of the second resolution unit 30 has been described in detail, herein not
Repeat again.
It is text filed that the current subtitle row data are divided at least one by division unit 40.Alternatively, each text
A merging attribute is may include in region, the merging attribute can be the global property of subtitle file, current subtitle row data
The superposition of string attribute in row attribute, the row of current subtitle row data.
Alternatively, division unit 40 may include：Detection unit and text filed determining unit.
For example, whether detection unit can detect in the current subtitle row data comprising unique identifier.Here, the spy
It is that the two neighboring character is marked between the two neighboring character of the current subtitle row data with difference to determine identifier
The symbol of string attribute in row.
When unique identifier is not included in the current subtitle row data, text filed determining unit is by the current word
Curtain row data be defined as one it is text filed；It is text filed true when unique identifier is included in the current subtitle row data
Used as text filed decollator is divided, the current subtitle row data are divided into the unique identifier many by order unit
It is individual text filed.
Due in Fig. 1 the step of S40 in the detection unit in division unit 40 and text filed determining unit
Function be described in detail, will not be repeated here.
Alternatively, division unit 40 can also include initial category in addition to including detection unit and text filed determining unit
Property determining unit and merge attribute determining unit.
Initial attribute determining unit is merged to the global property of subtitle file and the row attribute of current subtitle row data,
Obtain the text filed initial attribute.
For example, with the presence or absence of the row attribute in the attribute type of the initial attribute determining unit detection global property
Attribute type, when there is the attribute type of row attribute in the attribute type of the global property, then with the category of the row attribute
The property value of property type come the property value in the attribute type for updating the global property, by the global property after Update attribute value
As initial attribute, when in the attribute type of the global property in the absence of the attribute type of row attribute, then the row is belonged to
The property value of the attribute type of property and the attribute type of the row attribute is added in global property, by the global property after addition
As initial attribute.
Merge attribute determining unit to close string attribute in the row of the initial attribute and current subtitle row data
And, obtain the text filed merging attribute.
For example, with the presence or absence of character in the row in the attribute type of the merging attribute determining unit detection initial attribute
The attribute type of string attribute, when the attribute type that there is string attribute in the row in the attribute type of the initial attribute
When, then with the property value of the attribute type of string attribute in the row come the category in the attribute type for updating the initial attribute
Property value, the initial attribute after Update attribute value as the merging attribute is not deposited when in the attribute type of the initial attribute
In the row during attribute type of string attribute, then by word in the attribute type and the row of string attribute in the row
The property value for according with the attribute type of string attribute is added in initial attribute, and initial attribute after addition is merged into category as described
Property.
Due in Fig. 1 the step of S40 in the initial attribute determining unit in division unit 40 and merge attribute
The function of determining unit has been described in detail, and will not be repeated here.
Each attribute type that the merging attribute includes is created as corresponding one by attribute item creating unit 50
Attribute item.Alternatively, the attribute item may include the text filed a kind of attribute type for including, a kind of Attribute class
The property value of type, the text filed starting character position and termination character position.
Due in Fig. 1 the step of S50 in the function of attribute item creating unit 50 has been described in detail, herein
Repeat no more.
The all properties that data syntax Structure Creating unit 60 includes the current subtitle row data are created as institute
State the data syntax structure of current subtitle row data.Alternatively, the data syntax structure may include the lattice of the subtitle file
It is all that the number of all properties that formula, the current subtitle row data include, the current subtitle row data include
Attribute item.
Due in Fig. 1 the step of S60 in the function of attribute item creating unit 60 has been described in detail, herein
Repeat no more.
Title reduction unit 70 is according to the data syntax structure of the current subtitle row data to the current subtitle
Row data are reduced.
Particularly, during title reduction unit 70 obtains the data syntax structure of the current subtitle row data first
Including ith attribute, here, the initial value of 1≤i≤m, i is all category that the current subtitle row data include for 1, m
Property number, m is the natural number more than zero, then attribute type, the attribute type included based on ith attribute item
Property value is reduced to the character that the starting character position that ith attribute item includes includes with termination character position, so
Afterwards whether detection i is equal to m, as i ≠ m so that i=i+1, and obtains the data syntax structure of the current subtitle row data
Including ith attribute, as i=m, end is reduced to current subtitle row data.Here, title reduction unit
70 is that captions row data are reduced one by one, as i=m, then terminates the step of being reduced to current subtitle row data, and by
Second resolution unit 30 continues to obtain next captions row data, until whole caption data reduction are finished.
Using the method and apparatus of the reduction title of exemplary embodiment of the present, the word in subtitle file can be directed to
Curtain row data create data syntax structure one by one, and are reduced line by line, make have real-time to the reduction of captions row data.This
Outward, due to being, to captions row data creation data syntax structure, to be effectively reduced the occupancy to memory headroom.
Although the present invention, those skilled in the art are particularly shown and described with reference to its exemplary embodiment
It should be understood that in the case where the spirit and scope of the present invention that claim is limited are not departed from, form can be carried out to it
With the various changes in details.
Claims (16)
1. a kind of method for reducing title, methods described includes：
The subtitle file of the multimedia file is obtained from multimedia file；
Header data to the subtitle file is parsed, and obtains the global property of the subtitle file；
Obtain current subtitle row data and the current subtitle row data are parsed, obtain the row category of current subtitle row data
String attribute in the row of property and current subtitle row data, wherein, the action scope of row attribute is the institute included in captions row data
There is character, the action scope of string attribute is the starting character position of string attribute and termination character position in the row in row
In the character that includes；
The current subtitle row data are divided into it is at least one text filed, wherein, each is text filed to include a conjunction
And attribute, the merging attribute is the global property, the row attribute, in the row string attribute superposition；
Each attribute type that the merging attribute includes is created as a corresponding attribute item；
The all properties item that the current subtitle row data are included is created as the data syntax of the current subtitle row data
Structure；
Data syntax structure according to the current subtitle row data is reduced to the current subtitle row data.
2. method according to claim 1, wherein, the current subtitle row data are divided at least one text
The step of region, includes：
Whether detect in the current subtitle row data comprising unique identifier；
When unique identifier is not included in the current subtitle row data, the current subtitle row data are defined as a text
One's respective area；
It is when unique identifier is included in the current subtitle row data, the unique identifier is text filed as dividing
Decollator, the current subtitle row data are divided into it is multiple text filed,
Wherein, the unique identifier is that described adjacent two are marked between the two neighboring character of the current subtitle row data
Individual character has the symbol of interior string attribute of not going together.
3. method according to claim 1, wherein, the attribute item includes the text filed attribute for including
Type, a kind of property value of attribute type, the text filed starting character position and termination character position.
4. method according to claim 1, wherein, the data syntax structure includes form, the institute of the subtitle file
State the number of all properties that current subtitle row data include, all properties that the current subtitle row data include
.
5. method according to claim 1, wherein, any one text filed merging attribute for including is by following step
It is rapid obtained：
The global property and the row attribute are merged, the text filed initial attribute is obtained；
String attribute in the initial attribute and the row is merged, the text filed merging attribute is obtained.
6. method according to claim 5, wherein, the global property and the row attribute are merged, obtain institute
The step of stating text filed initial attribute includes：
Detect the attribute type with the presence or absence of row attribute in the attribute type of the global property；
When there is the attribute type of row attribute in the attribute type of the global property, then with the attribute type of the row attribute
Property value come the property value in the attribute type for updating the global property, using the global property after Update attribute value as first
Beginning attribute；
When in the attribute type of the global property in the absence of the attribute type of row attribute, then by the Attribute class of the row attribute
The property value of the attribute type of type and the row attribute is added in global property, using the global property after addition as initial category
Property.
7. method according to claim 5, wherein, string attribute in the initial attribute and the row is closed
And, include the step of obtain the text filed merging attribute：
Detect the attribute type with the presence or absence of string attribute in the row in the attribute type of the initial attribute；
When there is the attribute type of string attribute in the row in the attribute type of the initial attribute, then with the row
The property value of the attribute type of string attribute come the property value in the attribute type for updating the initial attribute, by Update attribute
Initial attribute after value is used as the merging attribute；
When in the attribute type of the initial attribute in the absence of the attribute type of string attribute in the row, then by the row
The property value of the attribute type of string attribute is added in initial attribute in the attribute type of interior string attribute and the row,
Using the initial attribute after addition as the merging attribute.
8. method according to claim 3, wherein, the data syntax structure according to the current subtitle row data is to current
The step of captions row data are reduced includes：
The ith attribute that a data syntax structure that () obtains the current subtitle row data includes, 1≤i's≤m, i is first
It is number that 1, m is all properties that include of the current subtitle row data to be worth, and m is the natural number more than zero；
B attribute type, the property value of the attribute type that () is included based on ith attribute item in ith attribute to wrapping
The character that the starting character position for including includes with termination character position is reduced；
Whether (c) detection i is equal to m, as i ≠ m so that i=i+1, and returns to execution step (a), as i=m, terminates to working as
The step of preceding captions row data are reduced.
9. a kind of device for reducing title, described device includes：
Subtitle file acquiring unit, obtains the subtitle file of the multimedia file from multimedia file；
First resolution unit, the header data to the subtitle file is parsed, and obtains the global property of the subtitle file；
Second resolution unit, obtains current subtitle row data and current subtitle row data is parsed, and obtains current subtitle row
String attribute in the row attribute of data and the row of current subtitle row data, wherein, the action scope of row attribute is captions row data
In all characters for including, the action scope of string attribute is the starting character position of string attribute and knot in the row in row
The character included in beam character position；
Division unit, the current subtitle row data are divided into it is at least one text filed, wherein, each text filed middle bag
A merging attribute is included, the merging attribute is the global property, the row attribute, string attribute is folded in the row
Plus；
Attribute item creating unit, a corresponding attribute is created as by each attribute type that the merging attribute includes
；
Data syntax Structure Creating unit, all properties item that the current subtitle row data are included is created as described current
The data syntax structure of captions row data；
Title reduction unit, the data syntax structure according to the current subtitle row data is carried out to current subtitle row data
Reduction.
10. device according to claim 9, wherein, division unit includes：
Whether detection unit, unique identifier is included in the detection current subtitle row data；
Text filed determining unit, when unique identifier is not included in the current subtitle row data, by the current subtitle
Row data be defined as one it is text filed, when in the current subtitle row data include unique identifier when, by the specific mark
Symbol is known as dividing text filed decollator, and it is text filed that the current subtitle row data are divided into multiple,
Wherein, the unique identifier is that described adjacent two are marked between the two neighboring character of the current subtitle row data
Individual character has the symbol of interior string attribute of not going together.
11. devices according to claim 9, wherein, the attribute item includes the text filed kind for including
Property type, a kind of property value of attribute type, the text filed starting character position and termination character position.
12. devices according to claim 9, wherein, the data syntax structure includes form, the institute of the subtitle file
State the number of all properties that current subtitle row data include, all properties that the current subtitle row data include
.
13. devices according to claim 9, wherein, division unit also includes：
Initial attribute determining unit, merges to the global property and the row attribute, obtain it is described it is text filed just
Beginning attribute；
Merge attribute determining unit, string attribute in the initial attribute and the row is merged, obtain the text
The merging attribute in region.
14. devices according to claim 13, wherein, initial attribute determining unit detects the Attribute class of the global property
With the presence or absence of the attribute type of row attribute in type, when the attribute type that there is row attribute in the attribute type of the global property
When, then with the property value of the attribute type of the row attribute come the property value in the attribute type for updating the global property, will
Global property after Update attribute value as initial attribute, when the category in the attribute type of the global property in the absence of row attribute
During property type, then the property value of the attribute type of the row attribute and the attribute type of the row attribute is added to global property
In, using the global property after addition as initial attribute.
15. devices according to claim 13, wherein, merge the Attribute class that attribute determining unit detects the initial attribute
With the presence or absence of the attribute type of string attribute in the row in type, when there is the row in the attribute type of the initial attribute
During the attribute type of interior string attribute, then update described first with the property value of the attribute type of string attribute in the row
Property value in the attribute type of beginning attribute, using the initial attribute after Update attribute value as the merging attribute, when described first
When not existing the attribute type of string attribute in the row in the attribute type of beginning attribute, then by string attribute in the row
Attribute type and the row in the property value of attribute type of string attribute be added in initial attribute, by addition after just
Beginning attribute is used as the merging attribute.
16. devices according to claim 9, wherein, title reduction unit obtains the current subtitle row data
The ith attribute that data syntax structure includes, the initial value of 1≤i≤m, i is that 1, m is bag in the current subtitle row data
The number of all properties for including, m is the natural number more than zero, based on attribute type, the category that ith attribute item includes
Property type property value the character that the starting character position that includes of ith attribute item includes with termination character position is carried out
Whether reduction, detection i is equal to m, as i ≠ m so that i=i+1, and obtains the data syntax knot of the current subtitle row data
The ith attribute that structure includes, as i=m, end is reduced to current subtitle row data.
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|---|---|---|---|---|
| EP1855479A1 (en) * | 2005-02-28 | 2007-11-14 | Matsushita Electric Industrial Co., Ltd. | Subtitle display |
| CN101355697A (en) * | 2008-09-17 | 2009-01-28 | 深圳市同洲电子股份有限公司 | Method and device for displaying caption |
| CN102082934A (en) * | 2009-11-30 | 2011-06-01 | 新奥特（北京）视频技术有限公司 | Caption object updating method and device |
| CN102082933A (en) * | 2009-11-30 | 2011-06-01 | 新奥特（北京）视频技术有限公司 | Subtitle making system |
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| CN1879403A (en) * | 2003-11-10 | 2006-12-13 | 皇家飞利浦电子股份有限公司 | Adaptation of close-captioned text based on surrounding video content |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1855479A1 (en) * | 2005-02-28 | 2007-11-14 | Matsushita Electric Industrial Co., Ltd. | Subtitle display |
| CN101355697A (en) * | 2008-09-17 | 2009-01-28 | 深圳市同洲电子股份有限公司 | Method and device for displaying caption |
| CN102082934A (en) * | 2009-11-30 | 2011-06-01 | 新奥特（北京）视频技术有限公司 | Caption object updating method and device |
| CN102082933A (en) * | 2009-11-30 | 2011-06-01 | 新奥特（北京）视频技术有限公司 | Subtitle making system |
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