CN103826167A - Micro-lecture playing engine and micro-lecture playing method - Google Patents
Micro-lecture playing engine and micro-lecture playing method Download PDFInfo
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Abstract
The invention discloses a micro-lecture playing engine, comprising a loader, a logic controller, a resource stacking unit, a rendering controller, a timer and an audio controller. Meanwhile, the invention provides a micro-lecture playing method based on the micro-lecture playing engine. By optimizing an algorithm, the recorded unlimited line-clearing, screen-clearing and cancel in case of pausing at a zero time point and an end time point and the loss of resource data in case of restoring operation and play are avoided in the product manufacturing process; caching data and a zero-time disc file are replaced to prevent memory leak of a courseware longer than half an hour, thus the usability and the stability are guaranteed; a plurality of arrays are designed to store different actions and a reverse frame and a full frame are combined to improve the performance, and therefore the waiting time of dragging play of a user is shortened and the user can feel no delay on the subsequent play.
Description
Technical field
The present invention relates to a kind of micro-class playback engine and micro-class player method, is mainly the Miniature courseware of recording in the dull and stereotyped terminal plays of android, is applied to explanation and the enterprise staff training of school's knowledge key content.
Background technology
There is corresponding broadcasting application in PC terminal, mainly to video file or Flash animation file, the multimedia file of production standard, this class multimedia file is larger, the courseware tens of a few minutes, it is a bottleneck that logarithm reportedly send, the broadcasting application of the dull and stereotyped terminal of IOS is that the self-defined multimedia file format producing according to own recording engine application is play, but terminal is a bottleneck to ordinary consumer consuming capacity, also there is not similar product as IOS in Android terminal, the content of multimedia that can record at the dull and stereotyped terminal first person user is play.Traditional playback engine exists and plays up defect, there will be the meticulous incomplete phenomenon of lines, owing to there being performance deficiency, cause dragging playing and have hundreds of millisecond delay, because playing up interface without buffered data and buffering is prepared, simultaneously owing to there is functional defect, play after needing disposable loading complete.
Summary of the invention
The object of the present invention is to provide a kind of micro-class playback engine and micro-class player method, can overcome above-mentioned defect, used thread queue management pond, texture render engine, user can download content of multimedia, play whenever and wherever possible in dull and stereotyped terminal, also can play online, filled up the market vacancy.
The present invention is achieved through the following technical solutions:
A kind of micro-class playback engine, comprising:
Loader: andlogic control device is connected, for reading micro-text part and the data that read being sent to logic controller;
Logic controller: respectively with resource heap stack cell, play up controller and be connected, for parsing that a resource data for classification is classified, data operation, by 1 o'clock data be pressed into resource storehouse, check whether data stack reaches threshold values, send data, assembling data;
Resource heap stack cell: the 1 o'clock data assembling for receive logic controller;
Play up controller: for controlling mode and the algorithm policy played up, data are played up and shown;
Timer: andlogic control device is connected, for recording the time point the timing that obtain from logic controller;
Audio Controller: be connected with timer, carry out micro-class broadcasting or stop playing for receiving timer information.
Further, for realizing better the present invention, also comprise displacer, described displacer respectively andlogic control device, resource heap stack cell is connected.
Further, for realizing better the present invention, described logic controller is full dose frame and reverse frames by data assembling, and full dose frame generates current time demonstration data from zero time point and every 10 seconds, show data the quarter at that time before the each destruction operation of reverse frames.
Further, for realizing better the present invention, described in play up controller the mode of playing up after writing bitmap bitmap, put into painting canvas canvas for showing data.
Further, for realizing better the present invention, described in play up controller play up strategy for using two buffer memorys, the follow-up demonstration data of caching record, data are played up in the current demonstration of another buffer memory, two buffer memory alternations.
Further, for realizing better the present invention, also comprise General controller, described General controller respectively with loader, logic controller, resource heap stack cell, play up controller, timer, Audio Controller, displacer and be connected.
The present invention has designed a kind of micro-class player method in having designed a kind of micro-class playback engine, comprises the following steps:
When user starts micro-text part, comprise the following steps:
(1) start: click micro-text part, start use-case;
(2) read micro-text part: loader reads micro-text part;
(3) decompose resource data: resolve according to filespec agreement, action resource, voice resource, picture materials resource classification are put into pending queue, and sound and picture generate 1 o'clock cache file;
(4) send resource data: loader sends to logic controller data;
(5) data operation: logic controller is resource data parsings of classify of classification, action resource resolves to paintbrush action, eraser action, cancels action, recovers action, clear line action, cls are moved, insert pictures moves, the action of deletion picture, rotating image, put preposition rear picture; If picture resource escape becomes corresponding numbering and reference address; If paintbrush action is with eraser, action becomes tracing point coordinate array to be stored in lines object message escape;
(6) be pressed into storehouse: logic controller is pressed into resource heap stack cell the 1 o'clock data assembling, the data for the treatment of calculation process are provided during for broadcasting;
(7) whether exceed heap stack capability: check the threshold values that whether exceedes storehouse queue definitions, the size of picture total quantity or sound entity data are excessive;
(8) send data buffer storage to disk buffering: 1 o'clock data that transmission assembles are to displacer, and displacer is saved in disk buffering district data;
(9) data that request is specified: after stacked data is disposed, the data of request fixed time sheet;
(10) eject data: resource heap stack cell ejects the internal memory stacked data that meets the time according to timeslice mark;
(11) assembling data: logic controller is assembled into full dose frame and reverse frames; Full dose frame, from zero time point, then generated a current time every 10 seconds and shows data, and reverse frames is to show data the quarter at that time before each destruction operation; The former be for drag broadcasting do not need to start anew computing show data, the latter be for destruction operation do not need to start anew yet computing show data;
(12) data of transmission zero time point: send the full dose data of 0 timeslice to playing up controller;
(13) play up and show: playing up mode and algorithm policy that controller control is played up, the mode of playing up is for showing that data write bitmap and then put into canvas, algorithm policy has used two buffer memorys, the follow-up demonstration data of caching record, data are played up in the current demonstration of another buffer memory, these two buffer memory alternations, play up performance issue thereby solve.
User starts after micro-text part, starts to play micro-text part, comprises the following steps:
(14) play: user plays, playing may be again to drag to play or continue to play, and use-case starts;
(15) start timer: if drag events logic controller obtains the time point of progress bar, play the time of obtaining in internal memory time tag if continue, playing internal memory time tag if start anew is zero, then startup/wake-up counters thread, timer starts timing simultaneously;
(16) starting sound plays: start Audio Controller decoding and play;
(17) start and show data: enable logic controller starts display logic;
(18) obtain the data of current point in time: the data of logic controller request fixed time sheet;
(19) eject data: resource heap stack cell ejects the internal memory stacked data that meets the time according to timeslice mark;
(20) assembling data: logic controller assembling shows data and appends in full dose frame or reverse frames;
(21) propelling data: send the full dose data of current time sheet to playing up controller;
(22) play up and show: playing up controller showing that data write bitmap and then put into canvas; Ceaselessly read, assemble and play up by timeslice like this, thereby having formed dynamic display effect;
(23) suspend: if user clicks time-out, timer stops timing;
(24) stopping sound playing: when user carries out step (23) operation, timer sends and stops play instruction to Audio Controller, and sound is play and suspended;
(25) notice stops: when user carries out step (23) operation, timer sends and stops assembling instruction to logic controller, and assembling thread suspends;
(26) check data: in resource heap stack cell, a thread checks resource storehouse remaining data;
(27) if do not installed, replace: if resource heap stack cell finds that follow-up data, not in the queue of resource storehouse, send the data that need pack the next time period into displacer;
(28) return data: displacer indicated the data of reading disk buffer memory and returns according to the time period;
(29) replace storehouse queuing data: resource heap stack cell is pressed into corresponding storehouse queue according to the data of returning.
The present invention compared with prior art, has following beneficial effect:
(1) the present invention is by optimized algorithm, avoids making in the process of product, the unconfined clear line, the cls that occur recording when zero time point and most end time point suspend, cancels with recovery operation and plays the loss that occurs resource data;
(2) the present invention is by displacer is set, and during by data cached and disk zero, file displacement, prevents that memory overflow from appearring in the courseware exceeding more than 30 minutes at duration, guaranteed availability and stability;
(3) the present invention preserves different actions by designing multiple queue, and carries out performance boost in conjunction with reverse frames, full dose frame, has shortened like this user and has dragged waiting time, can feel without postponing in follow-up play.
Accompanying drawing explanation
Fig. 1 is starting state logic module connection layout of the present invention;
Fig. 2 is broadcast state logic module connection layout of the present invention;
Fig. 3 is starting state sequential chart of the present invention;
Fig. 4 is broadcast state sequential chart of the present invention.
Embodiment
Below in conjunction with specific embodiment, the present invention is described in further detail, but embodiments of the present invention are not limited to this.
Embodiment 1:
As shown in Figure 1 and Figure 2, a kind of micro-class playback engine, comprising:
Loader: andlogic control device is connected, for reading micro-text part and the data that read being sent to logic controller; Logic controller: respectively with resource heap stack cell, play up controller and be connected, for parsing that a resource data for classification is classified, data operation, by 1 o'clock data be pressed into resource storehouse, check whether data stack reaches threshold values, send data, assembling data; Resource heap stack cell: the 1 o'clock data assembling for receive logic controller; Play up controller: for controlling mode and the algorithm policy played up, data are played up and shown; Timer: andlogic control device is connected, for recording the time point the timing that obtain from logic controller; Audio Controller: be connected with timer, carry out micro-class broadcasting or stop playing for receiving timer information.
For realizing better the present invention, guarantee availability and stability, also comprise displacer, described displacer respectively andlogic control device, resource heap stack cell is connected.File displacement, prevents that memory overflow from appearring in the courseware exceeding more than 30 minutes at duration, thereby can guarantee availability and stability when by data cached and disk zero.
For realizing better the present invention, avoid playout-delay phenomenon, described logic controller is full dose frame and reverse frames by data assembling, and full dose frame generates current time demonstration data from zero time point and every 10 seconds, show data the quarter at that time before the each destruction operation of reverse frames.Preserve different actions by designing multiple queue, and carry out performance boost in conjunction with reverse frames, full dose frame, shortened like this user and dragged waiting time, in follow-up play, can feel without postponing.
For realizing better the present invention, described in play up controller the mode of playing up after writing bitmap bitmap, put into painting canvas canvas for showing data.Simultaneously for realizing better the present invention, described in play up controller play up strategy for using two buffer memorys, the follow-up demonstration data of caching record, data are played up in the current demonstration of another buffer memory, two buffer memory alternations can prevent loss of data.
For realizing better the present invention, be convenient to close and exit application, also comprise General controller, described General controller respectively with loader, logic controller, resource heap stack cell, play up controller, timer, Audio Controller, displacer and be connected.When user need to exit application, destroy all controllers by General controller, close all threads and exit application.
Embodiment 2:
The present embodiment has proposed a kind of micro-class player method on the basis of embodiment 1, as shown in Figure 3, in the time that user starts micro-text part by step (1), by clicking user interface components (UI), clicks micro-text part, starts use-case;
Loader reads micro-text part by step (2), loader is resolved according to filespec agreement by step (3), action resource, voice resource, picture materials resource classification are put into pending queue, sound and picture generate 1 o'clock cache file, and loader sends the data to logic controller by step (4);
Logic controller is by step (5) resource data parsings of classify of classification, and action resource resolves to paintbrush action, eraser action, cancels action, recovers action, clear line action, cls are moved, insert pictures moves, the action of deletion picture, rotating image, put preposition rear picture; If picture resource escape becomes corresponding numbering and reference address; If paintbrush action is with eraser, action becomes tracing point coordinate array to be stored in lines object message escape; Logic controller is pressed into resource storehouse by step (6) the 1 o'clock data assembling, and the data for the treatment of calculation process are provided during for broadcasting; Whether logic controller exceedes the threshold values of storehouse queue definitions by step (7) inspection, the size of picture total quantity or sound entity data are excessive; After stacked data is disposed, the data of the timeslice that logic controller is specified by step (9) request; Resource ejects the internal memory stacked data that meets the time according to timeslice mark by step (10); The full dose data that logic controller sends 0 timeslice by step (12), to playing up controller, are played up controller and data are played up and shown by step (13).
As shown in Figure 4, in the time that user need to play micro-text part, by clicking user interface components (UI), click micro-text part and carry out play operation:
Play micro-text part by step (14), playing is likely to drag to play or continue to play, and use-case starts; As shown in step (15), if drag events logic controller obtains the time point of progress bar, play the time of obtaining in internal memory time tag if continue, playing internal memory time tag if start anew is zero, then startup/wake-up counters thread, timer starts timing simultaneously; Timer starts Audio Controller decoding by step (16) to be play, and timer starts display logic by step (17) enable logic controller;
Logic controller is the data to resource heap stack cell request fixed time sheet by step (18), thereby obtain the data of current point in time to resource heap stack cell, resource heap stack cell ejects the internal memory stacked data that meets the time according to timeslice mark by step (19);
Logic controller is empty to be crossed step (20) assembling and shows data and append in full dose frame or reverse frames, logic controller by step (21) to the full dose data of playing up controller transmission current time sheet;
In the time that user clicks time-out by step (23), timer stops timing, and timer is sent and stops play instruction to Audio Controller by step (24), and sound is play and suspended; Timer is sent and stops assembling instruction to logic controller by step (25), and assembling thread suspends.
The present embodiment comprises following protocol specification:
1. file header length (4 byte int);
The file header of 2.XML form, has defined the Data Position of each resource in micro-text part, and form is as follows:
<Vke>
<TotalTime value=" ten Byte(less thaies ten mend 0 above) "/> // micro-class total time
<AudioCodecType value=" Byte(is defaulted as 0) "/> // audio coding type
<AudioSampleRate value=" ten Byte(less thaies ten mend 0 above) "/> // audio code rate
<AudioChannelCount value=" Byte(is defaulted as 1) "/> // audio track number
<AudioFrameSize value=" ten Byte(less thaies ten mend 0 above) "/> // audio frame size
The position of <AudioDataPosition value=" ten Byte(less thaies ten mend 0 above) "/> // voice data
The position of <ActionDataPosition value=" ten Byte(less thaies ten mend 0 above) "/> // action data
The position of <ResourceDataPosition value=" ten Byte(less thaies ten mend 0 above) "/> // resource data
Width when <VkeWidth value=" ten Byte(less thaies ten mend 0 above) "/> // micro-class is recorded
Height when <VkeHeight value=" ten Byte(less thaies ten mend 0 above) "/> // micro-class is recorded
The position of <AudioMappingDataPosition value=" ten Byte(less thaies ten mend 0 above) "/> // packets of audio data and document location mapping (enum) data
</Vke>
By self-defined multimedia file format, the file data of vke suffix is divided into header and resource information, and header has defined data protocol rule, and resource information is divided into vestige resource information, picture resource information and sound resource information.
Android environment assembly comprises Canvas, Media Framework etc., and Android holds self-defined multi-medium data playing function, and loading, parsing, resource queue's pop down pattern generate reverse frames, full dose frame, dynamic frame data according to resource.
UI assembly comprises playing progress bar, volume control strip, plays pause switch.
As shown in Figure 3, in the time that user starts playback engine, logic controller sends the 1 o'clock data assembling to displacer by step (8), and displacer is saved in disk region data; In the time that user plays micro-text part, as shown in Figure 4, resource heap stack cell checks resource heap stack cell remaining data by step (26), if find that follow-up data are not in the queue of resource storehouse, resource heap stack cell sends the data that need pack the next time period into displacer by step (27), displacer is by step (28) according to the data of time period mark reading disk buffer memory and return, and the data that resource heap stack cell returns by step (29) basis are pressed into corresponding storehouse queue.
Play up controller by step (22) showing that data write bitmap bitmap and then put into painting canvas canvas, ceaselessly read, assemble and play up by timeslice like this, thereby having formed dynamic display effect.
By optimized algorithm, can prevent unconfined clear line, the cls recorded when zero time point and most end time point suspend, cancel with recovery operation and play the loss that occurs resource data.Other parts of the present embodiment are identical with embodiment 1, repeat no more.
The above, be only preferred embodiment of the present invention, not the present invention done to any pro forma restriction, and any simple modification, equivalent variations that every foundation technical spirit of the present invention is done above embodiment, within all falling into protection scope of the present invention.
Claims (7)
1. a micro-class playback engine, is characterized in that, comprising:
Loader: andlogic control device is connected, for reading micro-text part and the data that read being sent to logic controller;
Loader: respectively with resource heap stack cell, play up controller and be connected, for parsing that a resource data for classification is classified, data operation, by 1 o'clock data be pressed into resource storehouse, check whether data stack reaches threshold values, send data, assembling data;
Resource heap stack cell: the 1 o'clock data assembling for receive logic controller;
Play up controller: for controlling mode and the algorithm policy played up, data are played up and shown;
Timer: andlogic control device is connected, for recording the time point the timing that obtain from logic controller;
Audio Controller: be connected with timer, carry out micro-class broadcasting or stop playing for receiving timer information.
2. the micro-class playback engine of one according to claim 1, is characterized in that: also comprise displacer, described displacer respectively andlogic control device, resource heap stack cell is connected.
3. the micro-class playback engine of one according to claim 2, is characterized in that: also comprise General controller, described General controller respectively with loader, logic controller, resource heap stack cell, play up controller, timer, Audio Controller, displacer and be connected.
4. the micro-class playback engine of one according to claim 1, it is characterized in that: described logic controller is full dose frame and reverse frames by data assembling, full dose frame generates current time demonstration data from zero time point and every 10 seconds, show data the quarter at that time before the each destruction operation of reverse frames.
5. the micro-class playback engine of one according to claim 1, is characterized in that: described in play up controller the mode of playing up after writing bitmap bitmap, put into painting canvas canvas for showing data.
6. the micro-class playback engine of one according to claim 1, is characterized in that: described in play up controller play up strategy for using two buffer memorys, the follow-up demonstration data of caching record, data are played up in the current demonstration of another buffer memory, two buffer memory alternations.
7. according to the micro-class player method of the one described in the claims, it is characterized in that: comprise the following steps:
When user starts micro-text part, comprise the following steps:
(1) start: click micro-text part, start use-case;
(2) read micro-text part: loader reads micro-text part;
(3) decompose resource data: resolve according to filespec agreement, action resource, voice resource, picture materials resource classification are put into pending queue, and sound and picture generate 1 o'clock cache file;
(4) send resource data: loader sends to logic controller data;
(5) data operation: logic controller is resource data parsings of classify of classification, action resource resolves to paintbrush action, eraser action, cancels action, recovers action, clear line action, cls are moved, insert pictures moves, the action of deletion picture, rotating image, put preposition rear picture; If picture resource escape becomes corresponding numbering and reference address; If paintbrush action is with eraser, action becomes tracing point coordinate array to be stored in lines object message escape;
(6) be pressed into storehouse: logic controller is pressed into resource heap stack cell the 1 o'clock data assembling, the data for the treatment of calculation process are provided during for broadcasting;
(7) whether exceed heap stack capability: check the threshold values that whether exceedes storehouse queue definitions, the size of picture total quantity or sound entity data are excessive;
(8) send data buffer storage to disk buffering: 1 o'clock data that transmission assembles are to displacer, and displacer is saved in disk buffering district data;
(9) data that request is specified: after stacked data is disposed, the data of request fixed time sheet;
(10) eject data: resource heap stack cell ejects the internal memory stacked data that meets the time according to timeslice mark;
(11) assembling data: logic controller is assembled into full dose frame and reverse frames; Full dose frame, from zero time point, then generated a current time every 10 seconds and shows data, and reverse frames is to show data the quarter at that time before each destruction operation; The former be for drag broadcasting do not need to start anew computing show data, the latter be for destruction operation do not need to start anew yet computing show data;
(12) data of transmission zero time point: send the full dose data of 0 timeslice to playing up controller;
(13) play up and show: playing up mode and algorithm policy that controller control is played up, the mode of playing up is for showing that data write bitmap and then put into canvas, algorithm policy has used two buffer memorys, the follow-up demonstration data of caching record, data are played up in the current demonstration of another buffer memory, these two buffer memory alternations, play up performance issue thereby solve;
User starts after micro-text part, starts to play micro-text part, comprises the following steps:
(14) play: user plays, playing may be again to drag to play or continue to play, and use-case starts;
(15) start timer: if drag events logic controller obtains the time point of progress bar, play the time of obtaining in internal memory time tag if continue, playing internal memory time tag if start anew is zero, then startup/wake-up counters thread, timer starts timing simultaneously;
(16) starting sound plays: start Audio Controller decoding and play;
(17) start and show data: enable logic controller starts display logic;
(18) obtain the data of current point in time: the data of logic controller request fixed time sheet;
(19) eject data: resource heap stack cell ejects the internal memory stacked data that meets the time according to timeslice mark;
(20) assembling data: logic controller assembling shows data and appends in full dose frame or reverse frames;
(21) propelling data: send the full dose data of current time sheet to playing up controller;
(22) play up and show: playing up controller showing that data write bitmap and then put into canvas; Ceaselessly read, assemble and play up by timeslice like this, thereby having formed dynamic display effect;
(23) suspend: if user clicks time-out, timer stops timing;
(24) stopping sound playing: when user carries out step (23) operation, timer sends and stops play instruction to Audio Controller, and sound is play and suspended;
(25) notice stops: when user carries out step (23) operation, timer sends and stops assembling instruction to logic controller, and assembling thread suspends;
(26) check data: in resource heap stack cell, a thread checks resource storehouse remaining data;
(27) if do not installed, replace: if resource heap stack cell finds that follow-up data, not in the queue of resource storehouse, send the data that need pack the next time period into displacer;
(28) return data: displacer indicated the data of reading disk buffer memory and returns according to the time period;
(29) replace storehouse queuing data: resource heap stack cell is pressed into corresponding storehouse queue according to the data of returning.
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| CN115509671B (en) * | 2022-11-21 | 2023-12-05 | 北京世纪好未来教育科技有限公司 | Interactive courseware playing method, device, equipment and storage medium |
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