CN105430481A - Method and device for automatically testing code stream subtitle - Google Patents
Method and device for automatically testing code stream subtitle Download PDFInfo
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- CN105430481A CN105430481A CN201510776708.0A CN201510776708A CN105430481A CN 105430481 A CN105430481 A CN 105430481A CN 201510776708 A CN201510776708 A CN 201510776708A CN 105430481 A CN105430481 A CN 105430481A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
- H04N21/43—Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
- H04N21/434—Disassembling of a multiplex stream, e.g. demultiplexing audio and video streams, extraction of additional data from a video stream; Remultiplexing of multiplex streams; Extraction or processing of SI; Disassembling of packetised elementary stream
- H04N21/4345—Extraction or processing of SI, e.g. extracting service information from an MPEG stream
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
- H04N21/43—Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
- H04N21/434—Disassembling of a multiplex stream, e.g. demultiplexing audio and video streams, extraction of additional data from a video stream; Remultiplexing of multiplex streams; Extraction or processing of SI; Disassembling of packetised elementary stream
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
- H04N21/43—Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
- H04N21/434—Disassembling of a multiplex stream, e.g. demultiplexing audio and video streams, extraction of additional data from a video stream; Remultiplexing of multiplex streams; Extraction or processing of SI; Disassembling of packetised elementary stream
- H04N21/4348—Demultiplexing of additional data and video streams
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
- H04N21/43—Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
- H04N21/435—Processing of additional data, e.g. decrypting of additional data, reconstructing software from modules extracted from the transport stream
- H04N21/4351—Processing of additional data, e.g. decrypting of additional data, reconstructing software from modules extracted from the transport stream involving reassembling additional data, e.g. rebuilding an executable program from recovered modules
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
- H04N21/43—Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
- H04N21/435—Processing of additional data, e.g. decrypting of additional data, reconstructing software from modules extracted from the transport stream
- H04N21/4355—Processing of additional data, e.g. decrypting of additional data, reconstructing software from modules extracted from the transport stream involving reformatting operations of additional data, e.g. HTML pages on a television screen
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
- H04N21/43—Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
- H04N21/442—Monitoring of processes or resources, e.g. detecting the failure of a recording device, monitoring the downstream bandwidth, the number of times a movie has been viewed, the storage space available from the internal hard disk
- H04N21/44204—Monitoring of content usage, e.g. the number of times a movie has been viewed, copied or the amount which has been watched
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
- H04N21/45—Management operations performed by the client for facilitating the reception of or the interaction with the content or administrating data related to the end-user or to the client device itself, e.g. learning user preferences for recommending movies, resolving scheduling conflicts
- H04N21/458—Scheduling content for creating a personalised stream, e.g. by combining a locally stored advertisement with an incoming stream; Updating operations, e.g. for OS modules ; time-related management operations
- H04N21/4586—Content update operation triggered locally, e.g. by comparing the version of software modules in a DVB carousel to the version stored locally
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/80—Generation or processing of content or additional data by content creator independently of the distribution process; Content per se
- H04N21/85—Assembly of content; Generation of multimedia applications
- H04N21/854—Content authoring
- H04N21/8547—Content authoring involving timestamps for synchronizing content
Abstract
The present invention discloses a method for automatically testing a code stream subtitle. The method comprises the following steps: decoding a code stream of a current program to obtain subtitle information, and generating a pre-formatted program subtitle text by using the subtitle information; reading a font type of subtitles in a control subtitle text corresponding to the program subtitle text, and judging whether the font type of the subtitles in the program subtitle text is consistent with the font type of the subtitles in the control subtitle text; if so, conducting a subtitle content comparison test according to time stamps of the program subtitle text and the control subtitle text, and outputting a comparison testing result. The present invention also discloses a device for automatically testing a code stream subtitle. According to the present invention, the code stream subtitle can be tested automatically, so as to increase the testing efficiency and testing speed of the code stream subtitle, also avoid errors caused by a human test, and improve the testing accuracy of the code stream subtitle.
Description
Technical field
The present invention relates to digital television techniques field, particularly relate to automatic test approach and the device of code stream captions.
Background technology
Captions are text versions that TV, film and computer picture explain orally, and are the conventional miscellaneous functions in video, such as, CC captions (closedcaption) in North American television, the picture and text captions etc. in eurovision.The target of exploitation captions is generally to there be the personage of obstacle to use to hearing, but also use in particular circumstances, as in a riot of sound environment such as camera field, or just can read captions in the place needed peace and quiet as hospital to understand the content of TV.
Because captions illustrate the synchronous text of voice in video, therefore requirement can not parse mess code, error code, or loses character, or the shape of the mouth as one speaks of picture personage and word inconsistent etc., therefore captions test is extremely important.And now way is all by playing same code stream usually, then contrastive test model machine, when playing same test content, to be compared test by human eye.Because human eye judges that speed is slower than the display speed of captions, simultaneously when artificially judging, the factor impacts such as the diverting one's attention of tester, visual fatigue, thus cause the inefficiency for the test of code stream captions, test error is large, thus need often repeatedly to test, this greatly reduces the speed to introduce of program and consumes more development and testing resource.
Summary of the invention
Main purpose of the present invention is the automatic test approach and the device that provide a kind of code stream captions, is intended to solve the testing efficiency and test speed that how to improve code stream captions, reduces the technical problem of the test error of code stream captions simultaneously.
For achieving the above object, the invention provides a kind of automatic test approach of code stream captions, the automatic test approach of described code stream captions comprises:
Described caption information to obtain caption information, and is generated the program credits text of preset format by decoding actual program code stream;
Read the character library type of captions in the contrast captioned test corresponding with described program credits text, judge that whether the character library type of captions in described program credits text is consistent with the character library type of captions in described contrast captioned test;
When the character library type of captions in described program credits text is with when in described contrast captioned test, the character library type of captions is consistent, according to timestamp and the described timestamp contrasting captioned test of described program credits text, carry out caption content contrastive test and export contrastive test result.
Preferably, described decoding actual program code stream to obtain caption information, and comprises before described caption information being generated the program credits text of preset format:
Receive transmission code stream and resolve, obtaining program stream;
Judge the bit stream data whether carrying predetermined word library package in the program stream that parsing obtains;
When carrying the bit stream data of predetermined word library package in the program stream that parsing obtains, determine the automatic test carrying out code stream captions.
Preferably, the character library type of captions in the contrast captioned test that described reading is corresponding with described program credits text, judges that the character library type of captions in described program credits text and the character library type of captions in described contrast captioned test also comprise after whether consistent:
When captions in described program credits text character library type with described contrast the character library Type-Inconsistencies of captions in captioned test time, according to the character library type of captions in described contrast captioned test, from the bit stream data of described word-base data bag, obtain the character library of corresponding character library type to upgrade the character library of described program credits text.
Preferably, the described character library type according to captions in described contrast captioned test, the character library obtaining corresponding character library type from the bit stream data of described word-base data bag comprises with the character library upgrading described program credits text:
According to the character library type of captions in described contrast captioned test, resolve the bit stream data of described word-base data bag to obtain the character library of corresponding character library type;
The character library of the described corresponding character library type obtained is write the memory location of described program credits text and triggers captions refresh command, to upgrade the character library of described program credits text.
Preferably, it is characterized in that, described in carry out caption content contrastive test and export contrastive test result comprising:
Judge that whether the captions coded format of described program credits text is identical with the captions coded format of described contrast captioned test;
When the captions coded format of described program credits text is not identical with the captions coded format of described contrast captioned test, the captions coded format of described program credits text is converted to the captions coded format of described contrast captioned test;
When the captions coded format of described program credits text is identical with the captions coded format of described contrast captioned test, whether the captions encoded radio of corresponding more described program credits text is equal with the captions encoded radio of described contrast captioned test respectively;
According to the comparison result of captions encoded radio, export corresponding captions test prompts.
Further, for achieving the above object, the present invention also provides a kind of automatic testing equipment of code stream captions, and the automatic testing equipment of described code stream captions comprises:
Captioned test generation module, for actual program code stream of decoding to obtain caption information, and generates the program credits text of preset format by described caption information;
Character library type judging module, for reading the character library type of captions in the contrast captioned test corresponding with described program credits text, judge that whether the character library type of captions in described program credits text is consistent with the character library type of captions in described contrast captioned test;
Caption content test module, for when the character library type of captions in described program credits text is with when in described contrast captioned test, the character library type of captions is consistent, according to timestamp and the described timestamp contrasting captioned test of described program credits text, carry out caption content contrastive test and export contrastive test result.
Preferably, the automatic testing equipment of described code stream captions also comprises:
Transmission code stream parsing module, for receiving transmission code stream and resolving, obtains program stream;
Word-base data bag judge module, for judging the bit stream data whether carrying predetermined word library package in the program stream that parsing obtains;
Program stream parsing module, for when carrying the bit stream data of predetermined word library package in the program stream that parsing obtains, determines the automatic test carrying out code stream captions.
Preferably, the automatic testing equipment of described code stream captions also comprises:
Character library type update module, for when captions in described program credits text character library type with described contrast the character library Type-Inconsistencies of captions in captioned test time, according to the character library type of captions in described contrast captioned test, from the bit stream data of described word-base data bag, obtain the character library of corresponding character library type to upgrade the character library of described program credits text.
Preferably, described character library type update module comprises:
Character library acquiring unit, for the character library type according to captions in described contrast captioned test, resolves the bit stream data of described word-base data bag to obtain the character library of corresponding character library type;
Character library updating block, for writing the character library of the described corresponding character library type obtained the memory location of described program credits text and trigger captions refresh command, to upgrade the character library of described program credits text.
Preferably, described caption content test module comprises:
Whether coded format judging unit is identical with the captions coded format of described contrast captioned test for judging the captions coded format of described program credits text;
Coded format converting unit, for when the captions coded format of described program credits text is not identical with the captions coded format of described contrast captioned test, the captions coded format of described program credits text is converted to the captions coded format of described contrast captioned test;
Encoded radio comparing unit, for when the captions coded format of described program credits text is identical with the captions coded format of described contrast captioned test, whether the captions encoded radio of corresponding more described program credits text is equal with the captions encoded radio of described contrast captioned test respectively;
Test prompts output unit, for the comparison result according to captions encoded radio, exports corresponding captions test prompts.
The present invention adopts the code stream captions test mode of automation, the program credits text of preset format is generated by caption information decoding obtained, and then realize contrasting with default the contrastive test that captioned test carries out captions, specifically comprise the comparison of character library type and the comparison of caption content of captions.In addition, when the character library type of captions in program credits text is with the character library Type-Inconsistencies contrasted in captioned test, corresponding character library can be obtained to upgrade the character library of described program credits text from actual program code stream.The present invention can carry out the test of code stream captions automatically, and then improves testing efficiency and the test speed of code stream captions, it also avoid the error of artificially testing and bringing simultaneously, improves the accuracy rate of code stream captions test.
Accompanying drawing explanation
Fig. 1 is the schematic flow sheet of automatic test approach first embodiment of code stream captions of the present invention;
Fig. 2 is the schematic flow sheet of automatic test approach second embodiment of code stream captions of the present invention;
Fig. 3 is the schematic flow sheet that in the present invention, code stream makes an embodiment;
Fig. 4 is the schematic flow sheet of automatic test approach the 3rd embodiment of code stream captions of the present invention;
Fig. 5 is step S40 refinement schematic flow sheet in Fig. 4;
Fig. 6 is the refinement schematic flow sheet of step S30 in Fig. 1;
Fig. 7 is the high-level schematic functional block diagram of automatic testing equipment first embodiment of code stream captions;
Fig. 8 is the high-level schematic functional block diagram of automatic testing equipment second embodiment of code stream captions;
Fig. 9 is the high-level schematic functional block diagram of automatic testing equipment the 3rd embodiment of code stream captions;
Figure 10 is the refinement high-level schematic functional block diagram of character library type update module in Fig. 9;
Figure 11 is the refinement high-level schematic functional block diagram of caption content test module in Fig. 7.
The realization of the object of the invention, functional characteristics and advantage will in conjunction with the embodiments, are described further with reference to accompanying drawing.
Embodiment
Should be appreciated that specific embodiment described herein only in order to explain the present invention, be not intended to limit the present invention.
With reference to the schematic flow sheet that Fig. 1, Fig. 1 are automatic test approach first embodiment of code stream captions of the present invention.In the present embodiment, the automatic test approach of described code stream captions comprises:
Step S10, described caption information to obtain caption information, and is generated the program credits text of preset format by decoding actual program code stream;
In the present embodiment, for ease of carrying out the automatic test of code stream captions, when actual program code stream of decoding is to obtain the caption information corresponding to actual program, the caption information obtained decoding generates the program credits text of preset format, to compare test with the captioned test that contrasts preset, the preset format of captioned test is not limit, and specifically arranges according to actual needs.Such as, captioned test can adopt XML format to edit, contrast captioned test such as follows form is set.
<xmlversion＝"1.0"encoding＝"ISO-8859-1">
<subtitle>
<font>Calibri</font>
<program>CCTV4</program>
<contenttime＝“10:10:00”>Helloworld！</content>
</subtitle>
Wherein, encoding represents the coded format that the equipment carrying out captions test is supported, such as ISO-8859-1 coded format, ASCII character coded format, UNICODE code coded format etc.; Font represents the character library type of contrast captions, such as font format; Program represents the channel name of contrast corresponding to captions; Content represents the character content of captions, and time represents the timestamp of captions, is also the Subtitle Demonstration time.
Step S20, reads the character library type of captions in the contrast captioned test corresponding with described program credits text, judges that whether the character library type of captions in described program credits text is consistent with the character library type of captions in described contrast captioned test;
In the present embodiment, need to further illustrate, the contrast captioned test preset can be pre-set at perform captions test equipment in, be such as preset in television set, or be preset in Set Top Box.When starting the automatic test carrying out code stream captions on the equipment performing captions test, automatically read preset corresponding contrast captioned test with test of comparing.Such as, the program credits obtained after current decoding corresponds to the program credits of CCTV4 channel, then corresponding acquisition program is the test that the contrast captioned test of CCTV4 channel starts to carry out code stream captions.
The display of captions specifically comprises the character library type (such as font) of captions, the display position of captions, the time of Subtitle Demonstration and corresponding subtitle content etc., therefore, in the present embodiment, preferably first the character library type of captions in the program credits text generated is judged, to judge that whether it is consistent with the character library type of captions in corresponding contrast captioned test.Such as, in program credits text, the character library type of captions is the Song typeface, and the character library type contrasting captions in captioned test is black matrix, character library Type-Inconsistencies then between the two, if inconsistent, then the font type test errors of captions, if and unanimously, then the font type test of captions is correct.
Step S30, when the character library type of captions in described program credits text is with when in described contrast captioned test, the character library type of captions is consistent, according to timestamp and the described timestamp contrasting captioned test of described program credits text, carry out caption content contrastive test and export contrastive test result.
When the character library type of captions in program credits text is with when in contrast captioned test, the character library type of captions is consistent, then proceed the contrastive test of caption content, specifically according to timestamp and the timestamp contrasting captioned test of program credits text, carry out caption content contrastive test and export contrastive test result.In the present embodiment, the mode for caption content comparison is not limit, and specifically arranges according to actual conditions.
"; then correspondence is compared after test respectively; because the character " world " in caption content in program credits text is not identical with the character " china " in contrast captioned test in caption content; therefore; caption content contrastive test makes a mistake; the contrastive test result of therefore corresponding output can be, such as, output " there is wrong captions world in program credits text ".
This enforcement adopts the code stream captions test mode of automation, the program credits text of preset format is generated by caption information decoding obtained, and then realize contrasting with default the contrastive test that captioned test carries out captions, by carrying out the automatic test of code stream captions, and then improve testing efficiency and the test speed of code stream captions, it also avoid the error of artificially testing and bringing simultaneously, improve the accuracy rate of code stream captions test.In addition, it should be noted that, in the displaying contents of captions, due to captions display position arrange relatively fixing, and the character library type of the different program of same channel, captions corresponding to same program different time and content may not be identical, therefore, in the present embodiment, the preferred character library type to captions and caption content are tested, but are not limited to only test character library type and caption content.
With reference to the schematic flow sheet that Fig. 2, Fig. 2 are automatic test approach second embodiment of code stream captions of the present invention.Based on above-described embodiment, in the present embodiment, comprise before step S10:
Step S01, receives transmission code stream and resolves, obtaining program stream;
Step S02, judges the bit stream data whether carrying predetermined word library package in the program stream that parsing obtains;
Step S03, when carrying the bit stream data of predetermined word library package in the program stream that parsing obtains, determines the automatic test carrying out code stream captions.
In the present embodiment, for ease of fast finding to needing the program carrying out captions test, therefore in the NIT table of code stream, define a link descriptor Linkage_Descriptor, its organization definition is as table 1.
Table 1
Wherein, Service_id specifically points to the program number program_number of the self-defining data in the pat table of code stream, need for ease of quick position the program carrying out captions test, preferably the value of Service_id is set to identical with the value of program number program_number.
As shown in Figure 3, in the present embodiment, hold (such as the audio, video data editing equipment of operator's end) the editor of program, by default word-base data bag and the NIT with linkage descriptor, audiovisual data and other Program Specific Information carry out together packing formed transmission code stream to be broadcast on network, and then through receiving terminal (such as television set, Set Top Box) decoding process and form program stream.In the present embodiment, using the program corresponding to the program stream carrying the bit stream data of word-base data bag as needing the program carrying out the test of code stream captions, wherein, the corresponding a kind of font type of a kind of word-base data bag, such as, Song typeface packet, black matrix packet etc., the magnitude setting, font type etc. of word-base data bag are not limit, and specifically arrange according to actual needs.
In addition, what needs further illustrated is, due to the PID (PacketIdentifier of program, Packet Identifier) value uniquely exists in code stream, therefore the pre-defined pid value carrying out the program of captions test is also needed at editor's end of program, the program needing to carry out captions test can be defined as by the pid value of the program preset, also be the corresponding bit stream data determining to carry in the packet corresponding with the pid value of the program preset predetermined word library package, and then parse the video data of program again, voice data, the program stream such as caption data, to carry out the automatic test of code stream captions.The decode procedure to transmission code stream of receiving terminal is roughly as follows:
First, resolve the link descriptor Linkage_Descriptor in NIT table, obtain Service_id value, and then obtain the program number program_number needing the program carrying out captions test according to Service_id;
Secondly, search pat table according to program number program_number, obtain the pid value of the program stream of corresponding program in pmt table, and judge that whether the pid value of this program stream is equal with the pid value carrying out the program of captions test pre-set; If equal, then illustrate and resolve correctly, the test of code stream captions can be carried out, otherwise prompting make mistakes;
Finally, the program stream such as video data, voice data, caption data of program is parsed according to the pid value of resolving the program stream obtained, to carry out the automatic test of code stream captions.
In the present embodiment, word-base data bag is packed in transmission code stream, thus as needing a part for the program carrying out the test of code stream captions, by judge whether to carry in program stream predetermined word library package bit stream data to determine that program that actual program code stream is corresponding is the need of the test carrying out code stream captions.In addition, for judging that the mode of the bit stream data whether carrying predetermined word library package in program stream is not limit, such as pre-set the pid value of the program stream carrying the bit stream data establishing word-base data bag, by in succession searching NIT table, pat table and pmt table, and then whether the pid value determining the program stream that current parse obtains is equal with the pid value carrying out the program of captions test pre-set, if equal, then determine the bit stream data carrying predetermined word library package in program stream, thus need the test carrying out code stream captions.
With reference to the schematic flow sheet that Fig. 4, Fig. 4 are automatic test approach the 3rd embodiment of code stream captions of the present invention.Based on above-described embodiment, in the present embodiment, also comprise after above-mentioned steps S20:
Step S40, when captions in described program credits text character library type with described contrast the character library Type-Inconsistencies of captions in captioned test time, according to the character library type of captions in described contrast captioned test, from the bit stream data of described word-base data bag, obtain the character library of corresponding character library type to upgrade the character library of described program credits text.
The present embodiment is to contrast the character library type of captions in captions for reference standard, when the character library type of captions in program credits text is with when contrasting the character library Type-Inconsistencies of captions in captioned test, by the character library type according to captions in contrast captions, the character library identical with the character library type of captions in contrast captions is obtained from the bit stream data of word-base data bag, thus in order to upgrade the character library of program credits text.
Such as, in program credits text, the character library type of captions is the Song typeface, and the character library type contrasting captions in captioned test is black matrix, therebetween the character library type of captions is different, thus need to obtain black matrix character library from the bit stream data of word-base data bag, and by the black matrix character library of acquisition in order to upgrade the Song typeface character library of program credits text.
In the present embodiment, when captions in test code streams character library type with pre-set contrast the character library Type-Inconsistencies of captions time, by word-base data bag is bundled in transmission code stream, thus can directly obtain the character library of corresponding character library type fast to upgrade the character library of program credits text from the bit stream data of word-base data bag, to realize the automatic amendment process to such test errors further, thus captions of the present invention test is made to possess certain error correction.
Reference Fig. 5, Fig. 5 are step S40 refinement schematic flow sheet in Fig. 4.Based on above-described embodiment, in the present embodiment, step S40 comprises:
Step S401, according to the character library type of captions in described contrast captioned test, resolves the bit stream data of described word-base data bag to obtain the character library of corresponding character library type;
Step S402, writes the character library of the described corresponding character library type obtained the memory location of described program credits text and triggers captions refresh command, to upgrade the character library of described program credits text.
In the present embodiment, when the character library type of captions in program credits text is with when contrasting the character library Type-Inconsistencies of captions in captioned test, from the bit stream data of word-base data bag, resolve the word-base data bag obtained in code stream, and in the word-base data bag analytically obtained, obtain the character library identical with the character library type of captions in contrast captioned test.
In addition, because decoded caption information needs audiovisual data to be kept at terminal equipment (such as Set Top Box, television set) together above so that show on the terminal device, therefore need the memory location character library obtained from word-base data bag also being write the program credits text on terminal equipment.Simultaneously, the order of trigger word bank refresh is to carry out the update process of character library type to the captions in program credits text, and each module on notification terminal equipment carries out relevant refresh operation to upgrade the character library of program credits text, thus the most at last in program credits text the character library type of all captions to be updated to and according to the identical character library type of captions in captioned test.The present embodiment by obtaining corresponding character library to realize further automatically revising process to the test errors of character library type, thus makes captions of the present invention test possess certain error correction.
With reference to the refinement schematic flow sheet that Fig. 6, Fig. 6 are step S30 in Fig. 1.In the present embodiment, above-mentioned steps S30 comprises:
Step S301, judges that whether the captions coded format of described program credits text is identical with the captions coded format of described contrast captioned test;
Step S302, when the captions coded format of described program credits text is not identical with the captions coded format of described contrast captioned test, is converted to the captions coded format of described contrast captioned test by the captions coded format of described program credits text;
Step S303, when the captions coded format of described program credits text is identical with the captions coded format of described contrast captioned test, whether the captions encoded radio of corresponding more described program credits text is equal with the captions encoded radio of described contrast captioned test respectively;
Step S304, according to the comparison result of captions encoded radio, exports corresponding captions test prompts.
In the present embodiment, preferably adopt the method for carrying out caption content comparison according to the encoded radio of subtitle characters, the captions of program credits text are tested.Consider equipment (the such as Set Top Box of carrying out the test of code stream captions, TV) character encoding format do not supported may be there is, the equipment that such as certain money carries out the test of code stream captions is supported ASCII coding but is not supported UNICODE coded format, the captions coded format of preset contrast captioned test can not adopt UNICODE coded format, such as adopt ASCII coding, if and the captions coded format of program credits text adopts UNICODE coded format, thus the coded format corresponding to same character is inconsistent and then cause corresponding encoded radio possibility inconsistent, finally can not carry out the accurate comparison of character.
Therefore, when carrying out the comparison of captions, need the captions coded format judging program credits text whether identical with the captions coded format of contrast captioned test; If not identical, then the captions coded format of program credits text is converted to the captions coded format of contrast captioned test, and then makes the captions coded format of the two unified; And if identical, then directly carry out the contrastive test of captions, and according to the comparison result of captions encoded radio, export corresponding captions test prompts, such as, whole comparison is correct, then export captions test successfully prompting, if and there is any comparison mistake, then export the character of corresponding comparison mistake and carry out error prompting.
In the present embodiment, preferred employing carries out the method for caption content comparison according to the encoded radio of subtitle characters, test the captions of program credits text, but the present invention is not limited to the test mode of above-mentioned caption content, such as Direct Recognition subtitle characters is compared test.In the present embodiment, by carrying out automatic comparison test to caption content, and then without the need to passing through artificial vision's comparison, thus improve speed and the efficiency of captions test, also improve the accuracy rate of test simultaneously, decrease error when adopting manpower comparing pair, thus accelerate the speed to introduce of program further and decrease more development and testing resource.
With reference to the high-level schematic functional block diagram that Fig. 7, Fig. 7 are automatic testing equipment first embodiment of code stream captions.In the present embodiment, the automatic testing equipment of code stream captions comprises:
Captioned test generation module 10, for actual program code stream of decoding to obtain caption information, and generates the program credits text of preset format by described caption information;
In the present embodiment, for ease of carrying out the automatic test of code stream captions, when actual program code stream of decoding is to obtain the caption information corresponding to actual program, the caption information that captioned test generation module 10 obtains decoding generates the program credits text of preset format, to compare test with the captioned test that contrasts preset, the preset format of captioned test is not limit, and specifically arranges according to actual needs.
Character library type judging module 20, for reading the character library type of captions in the contrast captioned test corresponding with described program credits text, judge that whether the character library type of captions in described program credits text is consistent with the character library type of captions in described contrast captioned test;
In the present embodiment, need to further illustrate, the contrast captioned test preset can be pre-set at perform captions test equipment in, be such as preset in television set, or be preset in Set Top Box.When starting the automatic test carrying out code stream captions on the equipment performing captions test, automatically read preset corresponding contrast captioned test with test of comparing.Such as, the program credits obtained after current decoding corresponds to the program credits of CCTV4 channel, then corresponding acquisition program is the test that the contrast captioned test of CCTV4 channel starts to carry out code stream captions.
The display of captions specifically comprises the character library type (such as font) of captions, the display position of captions, the time of Subtitle Demonstration and corresponding subtitle content etc., therefore, in the present embodiment, character library type judging module 20 judges the character library type of captions in the program credits text generated, to judge that whether it is consistent with the character library type of captions in corresponding contrast captioned test.Such as, in program credits text, the character library type of captions is the Song typeface, and the character library type contrasting captions in captioned test is black matrix, character library Type-Inconsistencies then between the two, if inconsistent, then the font type test errors of captions, if and unanimously, then the font type test of captions is correct.
Caption content test module 30, for when the character library type of captions in described program credits text is with when in described contrast captioned test, the character library type of captions is consistent, according to timestamp and the described timestamp contrasting captioned test of described program credits text, carry out caption content contrastive test and export contrastive test result.
When the character library type of captions in program credits text is with when in contrast captioned test, the character library type of captions is consistent, then caption content test module 30 proceeds the contrastive test of caption content, specifically according to timestamp and the timestamp contrasting captioned test of program credits text, carry out caption content contrastive test and export contrastive test result.In the present embodiment, the mode for caption content comparison is not limit, and specifically arranges according to actual conditions.
"; then correspondence is compared after test respectively; because the character " world " in caption content in program credits text is not identical with the character " china " in contrast captioned test in caption content; therefore; caption content contrastive test makes a mistake; the contrastive test result of therefore corresponding output can be, such as, output " there is wrong captions world in program credits text ".
This enforcement adopts the code stream captions test mode of automation, the program credits text of preset format is generated by caption information decoding obtained, and then realize contrasting with default the contrastive test that captioned test carries out captions, by carrying out the automatic test of code stream captions, and then improve testing efficiency and the test speed of code stream captions, it also avoid the error of artificially testing and bringing simultaneously, improve the accuracy rate of code stream captions test.In addition, it should be noted that, in the displaying contents of captions, due to captions display position arrange relatively fixing, and the character library type of the different program of same channel, captions corresponding to same program different time and content may not be identical, therefore, in the present embodiment, the preferred character library type to captions and caption content are tested, but are not limited to only test character library type and caption content.
With reference to the high-level schematic functional block diagram that Fig. 8, Fig. 8 are automatic testing equipment second embodiment of code stream captions.In the present embodiment, the automatic testing equipment of code stream captions also comprises:
Transmission code stream parsing module 40, for receiving transmission code stream and resolving, obtains program stream;
Word-base data bag judge module 50, for judging the bit stream data whether carrying predetermined word library package in the program stream that parsing obtains;
Captions test determination module 60, for when carrying the bit stream data of predetermined word library package in the program stream that parsing obtains, determines the automatic test carrying out code stream captions.
In the present embodiment, word-base data bag is packed in transmission code stream, thus as needing a part for the program carrying out the test of code stream captions, the transmission code stream received is resolved by transmission code stream parsing module 40, obtain program stream, then judge by word-base data bag judge module 50 bit stream data whether carrying predetermined word library package in program stream, and then determine that program that actual program code stream is corresponding is the need of the test carrying out code stream captions by captions test determination module 60.In addition, for judging that the mode of the bit stream data whether carrying predetermined word library package in program stream is not limit, such as pre-set the pid value of the program stream carrying the bit stream data establishing word-base data bag, by in succession searching NIT table, pat table and pmt table, and then whether the pid value determining the program stream that current parse obtains is equal with the pid value carrying out the program of captions test pre-set, if equal, then determine the bit stream data carrying predetermined word library package in program stream, thus need the test carrying out code stream captions.
With reference to the high-level schematic functional block diagram that Fig. 9, Fig. 9 are automatic testing equipment the 3rd embodiment of code stream captions.In the present embodiment, the automatic testing equipment of code stream captions also comprises:
Character library type update module 70, for when captions in described program credits text character library type with described contrast the character library Type-Inconsistencies of captions in captioned test time, according to the character library type of captions in described contrast captioned test, from the bit stream data of described word-base data bag, obtain the character library of corresponding character library type to upgrade the character library of described program credits text.
The present embodiment is to contrast the character library type of captions in captions for reference standard, when the character library type of captions in program credits text is with when contrasting the character library Type-Inconsistencies of captions in captioned test, character library type update module 70 is by the character library type according to captions in contrast captions, the character library identical with the character library type of captions in contrast captions is obtained from the bit stream data of word-base data bag, thus in order to upgrade the character library of program credits text.
Such as, in program credits text, the character library type of captions is the Song typeface, and the character library type contrasting captions in captioned test is black matrix, therebetween the character library type of captions is different, thus need to obtain black matrix character library from the bit stream data of word-base data bag, and by the black matrix character library of acquisition in order to upgrade the Song typeface character library of program credits text.
In the present embodiment, when captions in test code streams character library type with pre-set contrast the character library Type-Inconsistencies of captions time, by word-base data bag is bundled in transmission code stream, thus can directly obtain the character library of corresponding character library type fast to upgrade the character library of program credits text from the bit stream data of word-base data bag, to realize the automatic amendment process to such test errors further, thus captions of the present invention test is made to possess certain error correction.
With reference to the refinement high-level schematic functional block diagram that Figure 10, Figure 10 are character library type update module in Fig. 9.In the present embodiment, described character library type update module 70 comprises:
Character library acquiring unit 701, for the character library type according to captions in described contrast captioned test, resolves the bit stream data of described word-base data bag to obtain the character library of corresponding character library type;
Character library updating block 702, for writing the character library of the described corresponding character library type obtained the memory location of described program credits text and trigger captions refresh command, to upgrade the character library of described program credits text.
In the present embodiment, when the character library type of captions in program credits text is with when contrasting the character library Type-Inconsistencies of captions in captioned test, character library acquiring unit 701 resolves the word-base data bag obtained in code stream from the bit stream data of word-base data bag, and obtains the character library identical with the character library type of captions in contrast captioned test in the word-base data bag analytically obtained.
In addition, because decoded caption information needs audiovisual data to be kept at terminal equipment (such as Set Top Box, television set) together above so that show on the terminal device, therefore character library updating block 702 needs the memory location character library obtained from word-base data bag also being write the program credits text on terminal equipment.Simultaneously, the order of character library updating block 702 trigger word bank refresh is to carry out the update process of character library type to the captions in program credits text, and each module on notification terminal equipment carries out relevant refresh operation to upgrade the character library of program credits text, thus the most at last in program credits text the character library type of all captions to be updated to and according to the identical character library type of captions in captioned test.The present embodiment by obtaining corresponding character library to realize further automatically revising process to the test errors of character library type, thus makes captions of the present invention test possess certain error correction.
With reference to the refinement high-level schematic functional block diagram that Figure 11, Figure 11 are caption content test module in Fig. 7.In the present embodiment, described caption content test module 30 comprises:
Whether coded format judging unit 301 is identical with the captions coded format of described contrast captioned test for judging the captions coded format of described program credits text;
Coded format converting unit 302, for when the captions coded format of described program credits text is not identical with the captions coded format of described contrast captioned test, the captions coded format of described program credits text is converted to the captions coded format of described contrast captioned test;
Encoded radio comparing unit 303, for when the captions coded format of described program credits text is identical with the captions coded format of described contrast captioned test, whether the captions encoded radio of corresponding more described program credits text is equal with the captions encoded radio of described contrast captioned test respectively;
Test prompts output unit 304, for the comparison result according to captions encoded radio, exports corresponding captions test prompts.
In the present embodiment, preferably adopt the method for carrying out caption content comparison according to the encoded radio of subtitle characters, the captions of program credits text are tested.Consider equipment (the such as Set Top Box of carrying out the test of code stream captions, TV) character encoding format do not supported may be there is, the equipment that such as certain money carries out the test of code stream captions is supported ASCII coding but is not supported UNICODE coded format, the captions coded format of preset contrast captioned test can not adopt UNICODE coded format, such as adopt ASCII coding, if and the captions coded format of program credits text adopts UNICODE coded format, thus the coded format corresponding to same character is inconsistent and then cause corresponding encoded radio possibility inconsistent, finally can not carry out the accurate comparison of character.
Therefore, when carrying out the comparison of captions, whether coded format judging unit 301 needs the captions coded format judging program credits text identical with the captions coded format of contrast captioned test; If not identical, then the captions coded format of program credits text is converted to the captions coded format of contrast captioned test by coded format converting unit 302, and then makes the captions coded format of the two unified; And if identical, then encoded radio comparing unit 303 directly carries out the contrastive test of captions, test prompts output unit 304 comparison results according to captions encoded radio, export corresponding captions test prompts, such as, whole comparison is correct, then test prompts output unit 304 exports captions test successfully prompting, if and there is any comparison mistake, then test prompts output unit 304 exports the character of corresponding comparison mistake and carries out error prompting.
In the present embodiment, preferred employing carries out the method for caption content comparison according to the encoded radio of subtitle characters, test the captions of program credits text, but the present invention is not limited to the test mode of above-mentioned caption content, such as Direct Recognition subtitle characters is compared test.In the present embodiment, by carrying out automatic comparison test to caption content, and then without the need to passing through artificial vision's comparison, thus improve speed and the efficiency of captions test, also improve the accuracy rate of test simultaneously, decrease error when adopting manpower comparing pair, thus accelerate the speed to introduce of program further and decrease more development and testing resource.
These are only the preferred embodiments of the present invention; not thereby the scope of the claims of the present invention is limited; every utilize specification of the present invention and accompanying drawing content to do equivalent structure or equivalent flow process conversion; or be directly or indirectly used in other relevant technical fields, be all in like manner included in scope of patent protection of the present invention.
Claims (10)
1. an automatic test approach for code stream captions, is characterized in that, the automatic test approach of described code stream captions comprises:
Described caption information to obtain caption information, and is generated the program credits text of preset format by decoding actual program code stream;
Read the character library type of captions in the contrast captioned test corresponding with described program credits text, judge that whether the character library type of captions in described program credits text is consistent with the character library type of captions in described contrast captioned test;
When the character library type of captions in described program credits text is with when in described contrast captioned test, the character library type of captions is consistent, according to timestamp and the described timestamp contrasting captioned test of described program credits text, carry out caption content contrastive test and export contrastive test result.
2. the automatic test approach of code stream captions as claimed in claim 1, is characterized in that, described decoding actual program code stream to obtain caption information, and comprises before described caption information being generated the program credits text of preset format:
Receive transmission code stream and resolve, obtaining program stream;
Judge the bit stream data whether carrying predetermined word library package in the program stream that parsing obtains;
When carrying the bit stream data of predetermined word library package in the program stream that parsing obtains, determine the automatic test carrying out code stream captions.
3. the automatic test approach of code stream captions as claimed in claim 2, it is characterized in that, the character library type of captions in the contrast captioned test that described reading is corresponding with described program credits text, judges that the character library type of captions in described program credits text and the character library type of captions in described contrast captioned test also comprise after whether consistent:
When captions in described program credits text character library type with described contrast the character library Type-Inconsistencies of captions in captioned test time, according to the character library type of captions in described contrast captioned test, from the bit stream data of described word-base data bag, obtain the character library of corresponding character library type to upgrade the character library of described program credits text.
4. the automatic test approach of code stream captions as claimed in claim 3, it is characterized in that, the described character library type according to captions in described contrast captioned test, the character library obtaining corresponding character library type from the bit stream data of described word-base data bag comprises with the character library upgrading described program credits text:
According to the character library type of captions in described contrast captioned test, resolve the bit stream data of described word-base data bag to obtain the character library of corresponding character library type;
The character library of the described corresponding character library type obtained is write the memory location of described program credits text and triggers captions refresh command, to upgrade the character library of described program credits text.
5. the automatic test approach of the code stream captions according to any one of claim 1-4, is characterized in that, described in carry out caption content contrastive test and export contrastive test result comprising:
Judge that whether the captions coded format of described program credits text is identical with the captions coded format of described contrast captioned test;
When the captions coded format of described program credits text is not identical with the captions coded format of described contrast captioned test, the captions coded format of described program credits text is converted to the captions coded format of described contrast captioned test;
When the captions coded format of described program credits text is identical with the captions coded format of described contrast captioned test, whether the captions encoded radio of corresponding more described program credits text is equal with the captions encoded radio of described contrast captioned test respectively;
According to the comparison result of captions encoded radio, export corresponding captions test prompts.
6. an automatic testing equipment for code stream captions, is characterized in that, the automatic testing equipment of described code stream captions comprises:
Captioned test generation module, for actual program code stream of decoding to obtain caption information, and generates the program credits text of preset format by described caption information;
Character library type judging module, for reading the character library type of captions in the contrast captioned test corresponding with described program credits text, judge that whether the character library type of captions in described program credits text is consistent with the character library type of captions in described contrast captioned test;
Caption content test module, for when the character library type of captions in described program credits text is with when in described contrast captioned test, the character library type of captions is consistent, according to timestamp and the described timestamp contrasting captioned test of described program credits text, carry out caption content contrastive test and export contrastive test result.
7. the automatic testing equipment of code stream captions as claimed in claim 6, it is characterized in that, the automatic testing equipment of described code stream captions also comprises:
Transmission code stream parsing module, for receiving transmission code stream and resolving, obtains program stream;
Word-base data bag judge module, for judging the bit stream data whether carrying predetermined word library package in the program stream that parsing obtains;
Program stream parsing module, for when carrying the bit stream data of predetermined word library package in the program stream that parsing obtains, determines the automatic test carrying out code stream captions.
8. the automatic testing equipment of code stream captions as claimed in claim 7, it is characterized in that, the automatic testing equipment of described code stream captions also comprises:
Character library type update module, for when captions in described program credits text character library type with described contrast the character library Type-Inconsistencies of captions in captioned test time, according to the character library type of captions in described contrast captioned test, from the bit stream data of described word-base data bag, obtain the character library of corresponding character library type to upgrade the character library of described program credits text.
9. the automatic testing equipment of code stream captions as claimed in claim 8, it is characterized in that, described character library type update module comprises:
Character library acquiring unit, for the character library type according to captions in described contrast captioned test, resolves the bit stream data of described word-base data bag to obtain the character library of corresponding character library type;
Character library updating block, for writing the character library of the described corresponding character library type obtained the memory location of described program credits text and trigger captions refresh command, to upgrade the character library of described program credits text.
10. the automatic testing equipment of the code stream captions according to any one of claim 6-9, is characterized in that, described caption content test module comprises:
Whether coded format judging unit is identical with the captions coded format of described contrast captioned test for judging the captions coded format of described program credits text;
Coded format converting unit, for when the captions coded format of described program credits text is not identical with the captions coded format of described contrast captioned test, the captions coded format of described program credits text is converted to the captions coded format of described contrast captioned test;
Encoded radio comparing unit, for when the captions coded format of described program credits text is identical with the captions coded format of described contrast captioned test, whether the captions encoded radio of corresponding more described program credits text is equal with the captions encoded radio of described contrast captioned test respectively;
Test prompts output unit, for the comparison result according to captions encoded radio, exports corresponding captions test prompts.
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| CN105430481B (en) | 2019-03-12 |
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