CN113727181B - Screen-throwing time delay dynamic configuration method, equipment and computer readable storage medium - Google Patents
Screen-throwing time delay dynamic configuration method, equipment and computer readable storage medium Download PDFInfo
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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
- H04N21/436—Interfacing a local distribution network, e.g. communicating with another STB or one or more peripheral devices inside the home
- H04N21/4363—Adapting the video stream to a specific local network, e.g. a Bluetooth® network
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N19/00—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals
- H04N19/42—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals characterised by implementation details or hardware specially adapted for video compression or decompression, e.g. dedicated software implementation
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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
- H04N21/44—Processing of video elementary streams, e.g. splicing a video clip retrieved from local storage with an incoming video stream or rendering scenes according to encoded video stream scene graphs
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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
- H04N21/44—Processing of video elementary streams, e.g. splicing a video clip retrieved from local storage with an incoming video stream or rendering scenes according to encoded video stream scene graphs
- H04N21/4402—Processing of video elementary streams, e.g. splicing a video clip retrieved from local storage with an incoming video stream or rendering scenes according to encoded video stream scene graphs involving reformatting operations of video signals for household redistribution, storage or real-time display
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Abstract
The invention discloses a method, equipment and a computer-readable storage medium for dynamically configuring screen-throwing time delay, wherein the method comprises the following steps: counting the video decoding time obtained in the screen throwing process of one section to obtain average decoding time; obtaining drawing time according to each frame time in the current screen throwing process; comparing the average decoding time with the drawing time; and if the average decoding time is longer than the drawing time, reducing the image code rate in the screen throwing process, and if the image code rate is shorter than a preset code rate, reducing the image frame rate in the screen throwing process. The humanized dynamic configuration scheme of the screen-throwing time delay is realized, so that the code rate and the frame rate in the screen-throwing process can be adaptively adjusted according to different screen-throwing time delays, and the requirements of users on the consistency and the fluency of screen-throwing experience of different screen-throwing ends are met.
Description
Technical Field
The present invention relates to the field of mobile communications, and in particular, to a method and apparatus for dynamically configuring a screen-throwing delay, and a computer readable storage medium.
Background
In the prior art, with the continuous development of intelligent terminal equipment, the application requirements of users on screen throwing are also higher and higher.
But the processing performance is uneven due to the variety of the screen-throwing end equipment. Therefore, for the mobile phone and the like used by the user, the screen-throwing experience of running the same screen-throwing application at different screen-throwing ends is different, the consistency of the smoothness, stability and the like of the screen throwing is poor, and the screen-throwing experience of the user is still to be promoted.
Disclosure of Invention
In order to solve the technical defects in the prior art, the invention provides a dynamic configuration method for screen-throwing time delay, which comprises the following steps:
and counting the video decoding time obtained in the screen projection process of one section to obtain the average decoding time.
And obtaining drawing time according to each frame time in the current screen throwing process.
Comparing the average decoding time and the rendering time.
And if the average decoding time is longer than the drawing time, reducing the image code rate in the screen throwing process, and if the image code rate is shorter than a preset code rate, reducing the image frame rate in the screen throwing process.
Optionally, the counting the video decoding time obtained in the screen projection process of a period to obtain an average decoding time includes:
And monitoring touch time delay of the screen throwing end in the screen throwing process.
If the touch time delay exceeds the preset time delay, starting to count video decoding time of a preset time to obtain the average decoding time.
Optionally, the obtaining the drawing time according to each frame time in the current screen projection process includes:
And acquiring an image frame rate in the screen projection process, and acquiring the time per frame corresponding to the image frame rate.
And taking one half of the time per frame as the drawing time.
Optionally, the comparing the average decoding time and the drawing time includes:
and determining a preset comparison frequency in a preset detection time.
And comparing the average decoding time with the drawing time according to the comparison frequency in the detection time.
Optionally, the comparing the average decoding time and the drawing time further includes:
And if the average decoding time is greater than the drawing time times and is greater than the average decoding time by times less than the drawing time at the detection time, determining that the average decoding time is greater than the drawing time.
And if the average decoding time is more than the drawing time times and less than the average decoding time is less than the drawing time times at the detection time, determining that the average decoding time is less than the drawing time.
Optionally, the comparing the average decoding time and the drawing time further includes:
and if the frequency of the average decoding time being greater than the drawing time is increasing at the detection time, determining that the average decoding time is greater than the drawing time.
And if the frequency of the average decoding time being greater than the drawing time is decreasing at the detection time, determining that the average decoding time is less than the drawing time.
Optionally, if the average decoding time is greater than the drawing time, reducing an image code rate in the screen projection process, and if the image code rate is less than a preset code rate, reducing an image frame rate in the screen projection process, including:
and if the average decoding time is longer than the drawing time, gradually reducing the image code rate in the screen throwing process according to a first amplitude value until the average decoding time is shorter than the drawing time.
And if the image code rate is smaller than the preset code rate and the average decoding time is longer than the drawing time in the process of gradually reducing the image code rate according to the first amplitude, gradually reducing the image frame rate in the screen throwing process according to the second amplitude.
Optionally, if the average decoding time is greater than the drawing time, reducing an image code rate in the screen projection process, and if the image code rate is less than a preset code rate, reducing an image frame rate in the screen projection process, including:
and setting the image code rate as the preset code rate.
And if the average decoding time is smaller than the drawing time in the process of gradually reducing the image frame rate according to the second amplitude, taking the current image frame rate as the screen projection frame rate corresponding to the preset code rate.
The invention also provides a device for dynamically configuring the screen-throwing time delay, which comprises a memory, a processor and a computer program stored on the memory and capable of running on the processor, wherein the computer program realizes the steps of the method for dynamically configuring the screen-throwing time delay according to any one of the above steps when being executed by the processor.
The invention also provides a computer readable storage medium, wherein the computer readable storage medium stores a screen-throwing time delay dynamic configuration program, and the screen-throwing time delay dynamic configuration program realizes the steps of the screen-throwing time delay dynamic configuration method according to any one of the above steps when being executed by a processor.
By implementing the method, the device and the computer readable storage medium for dynamically configuring the screen-throwing time delay, the average decoding time is obtained by counting the video decoding time obtained in the screen-throwing process of one section; obtaining drawing time according to each frame time in the current screen throwing process; comparing the average decoding time with the drawing time; and if the average decoding time is longer than the drawing time, reducing the image code rate in the screen throwing process, and if the image code rate is shorter than a preset code rate, reducing the image frame rate in the screen throwing process. The humanized dynamic configuration scheme of the screen-throwing time delay is realized, so that the code rate and the frame rate in the screen-throwing process can be adaptively adjusted according to different screen-throwing time delays, and the requirements of users on the consistency and the fluency of screen-throwing experience of different screen-throwing ends are met.
Drawings
The invention will be further described with reference to the accompanying drawings and examples, in which:
fig. 1 is a schematic diagram of a hardware structure of a mobile terminal according to the present invention;
Fig. 2 is a schematic diagram of a communication network system according to an embodiment of the present invention;
FIG. 3 is a flowchart of a first embodiment of a method for dynamic configuration of a screen-break delay according to the present invention;
FIG. 4 is a flow chart of a second embodiment of the method for dynamic configuration of a screen-break delay of the present invention;
FIG. 5 is a flow chart of a third embodiment of the method for dynamic configuration of a screen-break delay of the present invention;
FIG. 6 is a flowchart of a fourth embodiment of the method for dynamically configuring a screen-break delay of the present invention;
FIG. 7 is a flowchart of a fifth embodiment of a method for dynamic configuration of a screen-break delay according to the present invention;
FIG. 8 is a flowchart of a sixth embodiment of a method for dynamic configuration of a screen-break delay according to the present invention;
FIG. 9 is a flowchart of a seventh embodiment of a method for dynamic configuration of a screen-break delay according to the present invention;
fig. 10 is a flowchart of an eighth embodiment of the method for dynamically configuring a screen-break delay according to the present invention.
Detailed Description
It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the invention.
In the following description, suffixes such as "module", "component", or "unit" for representing elements are used only for facilitating the description of the present invention, and have no specific meaning per se. Thus, "module," "component," or "unit" may be used in combination.
The terminal may be implemented in various forms. For example, the terminals described in the present invention may include mobile terminals such as a mobile phone, a tablet computer, a notebook computer, a palm computer, a Personal digital assistant (Personal DIGITAL ASSISTANT, PDA), a Portable media player (Portable MEDIA PLAYER, PMP), a navigation device, a wearable device, a smart bracelet, a pedometer, and the like, as well as fixed terminals such as a digital TV, a desktop computer, and the like.
The following description will be given taking a mobile terminal as an example, and those skilled in the art will understand that the configuration according to the embodiment of the present invention can be applied to a fixed type terminal in addition to elements particularly used for a moving purpose.
Referring to fig. 1, which is a schematic diagram of a hardware structure of a mobile terminal implementing various embodiments of the present invention, the mobile terminal 100 may include: an RF (Radio Frequency) unit 101, a WiFi module 102, an audio output unit 103, an a/V (audio/video) input unit 104, a sensor 105, a display unit 106, a user input unit 107, an interface unit 108, a memory 109, a processor 110, and a power supply 111. Those skilled in the art will appreciate that the mobile terminal structure shown in fig. 1 is not limiting of the mobile terminal and that the mobile terminal may include more or fewer components than shown, or may combine certain components, or a different arrangement of components.
The following describes the components of the mobile terminal in detail with reference to fig. 1:
The radio frequency unit 101 may be used for receiving and transmitting signals during the information receiving or communication process, specifically, after receiving downlink information of the base station, processing the downlink information by the processor 110; and, the uplink data is transmitted to the base station. Typically, the radio frequency unit 101 includes, but is not limited to, an antenna, at least one amplifier, a transceiver, a coupler, a low noise amplifier, a duplexer, and the like. In addition, the radio frequency unit 101 may also communicate with networks and other devices via wireless communications. The wireless communication may use any communication standard or protocol, including but not limited to GSM (Global System of Mobile communication, global System for Mobile communications), GPRS (GENERAL PACKET Radio Service), CDMA2000 (Code Division Multiple Access, code Division multiple Access 2000), WCDMA (Wideband Code Division Multiple Access ), TD-SCDMA (Time Division-Synchronous Code Division Multiple Access, time Division synchronous code Division multiple Access), FDD-LTE (Frequency Division Duplexing-Long Term Evolution, frequency Division Duplex Long term evolution) and TDD-LTE (Time Division Duplexing-Long Term Evolution, time Division Duplex Long term evolution), etc.
WiFi belongs to a short-distance wireless transmission technology, and a mobile terminal can help a user to send and receive e-mails, browse web pages, access streaming media and the like through the WiFi module 102, so that wireless broadband Internet access is provided for the user. Although fig. 1 shows a WiFi module 102, it is understood that it does not belong to the necessary constitution of a mobile terminal, and can be omitted entirely as required within a range that does not change the essence of the invention.
The audio output unit 103 may convert audio data received by the radio frequency unit 101 or the WiFi module 102 or stored in the memory 109 into an audio signal and output as sound when the mobile terminal 100 is in a call signal reception mode, a talk mode, a recording mode, a voice recognition mode, a broadcast reception mode, or the like. Also, the audio output unit 103 may also provide audio output (e.g., a call signal reception sound, a message reception sound, etc.) related to a specific function performed by the mobile terminal 100. The audio output unit 103 may include a speaker, a buzzer, and the like.
The a/V input unit 104 is used to receive an audio or video signal. The a/V input unit 104 may include a graphics processor (Graphics Processing Unit, GPU) 1041 and a microphone 1042, the graphics processor 1041 processing image data of still pictures or video obtained by an image capturing device (e.g. a camera) in a video capturing mode or an image capturing mode. The processed image frames may be displayed on the display unit 106. The image frames processed by the graphics processor 1041 may be stored in the memory 109 (or other storage medium) or transmitted via the radio frequency unit 101 or the WiFi module 102. The microphone 1042 can receive sound (audio data) via the microphone 1042 in a phone call mode, a recording mode, a voice recognition mode, and the like, and can process such sound into audio data. The processed audio (voice) data may be converted into a format output that can be transmitted to the mobile communication base station via the radio frequency unit 101 in the case of a telephone call mode. The microphone 1042 may implement various types of noise cancellation (or suppression) algorithms to cancel (or suppress) noise or interference generated in the course of receiving and transmitting the audio signal.
The mobile terminal 100 also includes at least one sensor 105, such as a light sensor, a motion sensor, and other sensors. Specifically, the light sensor includes an ambient light sensor and a proximity sensor, wherein the ambient light sensor can adjust the brightness of the display panel 1061 according to the brightness of ambient light, and the proximity sensor can turn off the display panel 1061 and/or the backlight when the mobile terminal 100 moves to the ear. As one of the motion sensors, the accelerometer sensor can detect the acceleration in all directions (generally three axes), and can detect the gravity and direction when stationary, and can be used for applications of recognizing the gesture of a mobile phone (such as horizontal and vertical screen switching, related games, magnetometer gesture calibration), vibration recognition related functions (such as pedometer and knocking), and the like; as for other sensors such as fingerprint sensors, pressure sensors, iris sensors, molecular sensors, gyroscopes, barometers, hygrometers, thermometers, infrared sensors, etc. that may also be configured in the mobile phone, the detailed description thereof will be omitted.
The display unit 106 is used to display information input by a user or information provided to the user. The display unit 106 may include a display panel 1061, and the display panel 1061 may be configured in the form of a Liquid crystal display (Liquid CRYSTAL DISPLAY, LCD), an Organic Light-Emitting Diode (OLED), or the like.
The user input unit 107 may be used to receive input numeric or character information and to generate key signal inputs related to user settings and function control of the mobile terminal. In particular, the user input unit 107 may include a touch panel 1071 and other input devices 1072. The touch panel 1071, also referred to as a touch screen, may collect touch operations thereon or thereabout by a user (e.g., operations of the user on the touch panel 1071 or thereabout by using any suitable object or accessory such as a finger, a stylus, etc.) and drive the corresponding connection device according to a predetermined program. The touch panel 1071 may include two parts of a touch detection device and a touch controller. The touch detection device detects the touch azimuth of a user, detects a signal brought by touch operation and transmits the signal to the touch controller; the touch controller receives touch information from the touch detection device, converts it into touch point coordinates, and sends the touch point coordinates to the processor 110, and can receive and execute commands sent from the processor 110. Further, the touch panel 1071 may be implemented in various types such as resistive, capacitive, infrared, and surface acoustic wave. The user input unit 107 may include other input devices 1072 in addition to the touch panel 1071. In particular, other input devices 1072 may include, but are not limited to, one or more of a physical keyboard, function keys (e.g., volume control keys, switch keys, etc.), a trackball, mouse, joystick, etc., as specifically not limited herein.
Further, the touch panel 1071 may overlay the display panel 1061, and when the touch panel 1071 detects a touch operation thereon or thereabout, the touch panel 1071 is transferred to the processor 110 to determine the type of touch event, and then the processor 110 provides a corresponding visual output on the display panel 1061 according to the type of touch event. Although in fig. 1, the touch panel 1071 and the display panel 1061 are two independent components for implementing the input and output functions of the mobile terminal, in some embodiments, the touch panel 1071 may be integrated with the display panel 1061 to implement the input and output functions of the mobile terminal, which is not limited herein.
The interface unit 108 serves as an interface through which at least one external device can be connected with the mobile terminal 100. For example, the external devices may include a wired or wireless headset port, an external power (or battery charger) port, a wired or wireless data port, a memory card port, a port for connecting a device having an identification module, an audio input/output (I/O) port, a video I/O port, an earphone port, and the like. The interface unit 108 may be used to receive input (e.g., data information, power, etc.) from an external device and transmit the received input to one or more elements within the mobile terminal 100 or may be used to transmit data between the mobile terminal 100 and an external device.
Memory 109 may be used to store software programs as well as various data. The memory 109 may mainly include a storage program area that may store an operating system, application programs required for at least one function (such as a sound playing function, an image playing function, etc.), and a storage data area; the storage data area may store data (such as audio data, phonebook, etc.) created according to the use of the handset, etc. In addition, memory 109 may include high-speed random access memory, and may also include non-volatile memory, such as at least one magnetic disk storage device, flash memory device, or other volatile solid-state storage device.
The processor 110 is a control center of the mobile terminal, connects various parts of the entire mobile terminal using various interfaces and lines, and performs various functions of the mobile terminal and processes data by running or executing software programs and/or modules stored in the memory 109 and calling data stored in the memory 109, thereby performing overall monitoring of the mobile terminal. Processor 110 may include one or more processing units; preferably, the processor 110 may integrate an application processor that primarily handles operating systems, user interfaces, applications, etc., with a modem processor that primarily handles wireless communications. It will be appreciated that the modem processor described above may not be integrated into the processor 110.
The mobile terminal 100 may further include a power source 111 (e.g., a battery) for supplying power to the respective components, and preferably, the power source 111 may be logically connected to the processor 110 through a power management system, so as to perform functions of managing charging, discharging, and power consumption management through the power management system.
Although not shown in fig. 1, the mobile terminal 100 may further include a bluetooth module or the like, which is not described herein.
In order to facilitate understanding of the embodiments of the present invention, a communication network system on which the mobile terminal of the present invention is based will be described below.
Referring to fig. 2, fig. 2 is a schematic diagram of a communication network system according to an embodiment of the present invention, where the communication network system is an LTE system of a general mobile communication technology, and the LTE system includes a UE (User Equipment) 201, an e-UTRAN (Evolved UMTS Terrestrial Radio Access Network ) 202, an epc (Evolved Packet Core, evolved packet core) 203, and an IP service 204 of an operator that are sequentially connected in communication.
Specifically, the UE201 may be the terminal 100 described above, and will not be described herein.
The E-UTRAN202 includes eNodeB2021 and other eNodeB2022, etc. The eNodeB2021 may be connected with other eNodeB2022 by a backhaul (e.g., an X2 interface), the eNodeB2021 is connected to the EPC203, and the eNodeB2021 may provide access from the UE201 to the EPC 203.
EPC203 may include MME (Mobility MANAGEMENT ENTITY ) 2031, hss (Home Subscriber Server, home subscriber server) 2032, other MMEs 2033, SGW (SERVING GATE WAY ) 2034, pgw (PDN GATE WAY, packet data network gateway) 2035, PCRF (Policy AND CHARGING Rules Function) 2036, and so on. The MME2031 is a control node that handles signaling between the UE201 and EPC203, providing bearer and connection management. HSS2032 is used to provide registers to manage functions such as home location registers (not shown) and to hold user specific information about service characteristics, data rates, etc. All user data may be sent through SGW2034 and PGW2035 may provide IP address allocation and other functions for UE201, PCRF2036 is a policy and charging control policy decision point for traffic data flows and IP bearer resources, which selects and provides available policy and charging control decisions for a policy and charging enforcement function (not shown).
IP services 204 may include the internet, intranets, IMS (IP Multimedia Subsystem ), or other IP services, etc.
Although the LTE system is described above as an example, it should be understood by those skilled in the art that the present invention is not limited to LTE systems, but may be applied to other wireless communication systems, such as GSM, CDMA2000, WCDMA, TD-SCDMA, and future new network systems.
Based on the above mobile terminal hardware structure and the communication network system, various embodiments of the method of the present invention are provided.
Example 1
Fig. 3 is a flowchart of a first embodiment of the method for dynamically configuring a screen-break delay according to the present invention. A method for dynamically configuring screen-throwing time delay comprises the following steps:
S1, counting video decoding time obtained in a screen projection process of one section, and obtaining average decoding time.
S2, drawing time is obtained according to each frame time in the current screen throwing process.
S3, comparing the average decoding time with the drawing time.
S4, if the average decoding time is longer than the drawing time, reducing the image code rate in the screen projection process, and if the image code rate is shorter than a preset code rate, reducing the image frame rate in the screen projection process.
In this embodiment, considering that more and more screen-casting applications support high frame rate screen casting, when the screen-casting is performed at high frame rate, the applicant finds a serious problem, when the screen-casting end is a computer and the refresh rate of the display of the computer is adjusted to 120Hz, because the mobile phone is used as the game program operated by the end to support 120Hz, the computer may have a serious jamming phenomenon, and the jamming degree may reach a touch display state that is seriously out of hands. The applicant carries out log analysis based on the method, firstly, the problem of data transmission is eliminated, namely, the fact that the computer side can receive about 120 frames per second is found from the started debugging log, and therefore, the part of data transmission is completely free of problems. The applicant again analyzes the data decoding section and finds that the decoding speed per second at this time does not reach 120 frames per second at all, typically 60 frames per second. The applicant has thus found that the decoding speed here is a real bottleneck, on the basis of which it has been thought to solve the above-mentioned latency problem by optimizing the decoding speed in a number of ways.
In this embodiment, the main idea of the applicant to solve the above technical problems is to perform reverse feedback according to actual encoding and decoding data, and adjust the reverse feedback to obtain a reasonable frame rate and/or code rate of a screen-throwing end of a computer or the like.
In the present embodiment, the applicant has considered that the problem cannot be solved substantially if the decoding speed is increased uniformly based on the main idea described above. Specifically, the software decoding can only increase the thread, but the processing capacity of a general computer under the condition of high frame rate is not strong, so that the load of the thread on the computer is larger, and the thread is increased on the computer with very good performance to cause the decoding speed to be too high, so that the frame rate of the picture display is fluctuated along with transmission, and the picture can be negligibly fast or slowly. This scheme of speeding up decoding is not feasible and cannot be adopted anymore.
In this embodiment, the applicant is also based on the main idea, and it is not preferable to increase the decoding speed by increasing the threads. Accordingly, the applicant has considered to try to reduce the picture quality a little and to limit a certain refresh rate in exchange for a shorter decoding time, i.e. from the viewpoint of picture quality. The applicant considers that this scheme is feasible, in particular, because the current rate of the picture quality of the screen is set to be 50m, which is relatively large, and its reduction does lead to a significant reduction in decoding time, for example, if the rate becomes smaller to be about 25m, at this time, it is very difficult for the average human eye to distinguish what is a significant quality degradation of the picture and 50m, and at the same time, if the refresh rate is kept unchanged, for example, the refresh rate of 60fps is a very smooth experience for the user. It will be appreciated that the smooth running experience at 60fps is more tolerable to the user than the fully unacceptable churning phenomenon for the user at 120fps, and therefore the processing scheme of this embodiment includes limiting the refresh rate to 60fps.
In this embodiment, based on the technical idea, the applicant proposes a dynamic configuration scheme of screen-throwing delay, which includes firstly, counting video decoding time obtained in a screen-throwing process to obtain average decoding time; then, drawing time is obtained according to each frame time in the current screen throwing process; finally, comparing the average decoding time with the drawing time; and if the average decoding time is longer than the drawing time, reducing the image code rate in the screen throwing process, and if the image code rate is shorter than a preset code rate, reducing the image frame rate in the screen throwing process.
The method has the beneficial effects that the average decoding time is obtained by counting the video decoding time obtained in the screen throwing process of one section; obtaining drawing time according to each frame time in the current screen throwing process; comparing the average decoding time with the drawing time; and if the average decoding time is longer than the drawing time, reducing the image code rate in the screen throwing process, and if the image code rate is shorter than a preset code rate, reducing the image frame rate in the screen throwing process. The humanized dynamic configuration scheme of the screen-throwing time delay is realized, so that the code rate and the frame rate in the screen-throwing process can be adaptively adjusted according to different screen-throwing time delays, and the requirements of users on the consistency and the fluency of screen-throwing experience of different screen-throwing ends are met.
Example two
Fig. 4 is a flowchart of a second embodiment of the method for dynamically configuring a screen-throwing delay according to the present invention, based on the above embodiment, the counting of video decoding time acquired in a screen-throwing process for a period of time to obtain an average decoding time includes:
S11, monitoring touch time delay of a screen throwing end in the screen throwing process.
And S12, if the touch time delay exceeds the preset time delay, starting to count video decoding time of a preset time to obtain the average decoding time.
In this embodiment, a mode and a frame rate that can reduce the picture quality rate have been found in consideration of the above embodiments, but it is a new problem how much to reduce, in what case.
In this embodiment, considering the existing computer performance, it is generally sufficient to have a 50m code rate and 120fps, but some computers have poor performance and cannot be sufficient. The present embodiment devised the following strategies: and counting video decoding time of video formats such as ffmpeg, wherein the counting mode adopts that the average decoding time of 100 frames is X.
The method has the beneficial effects that the touch time delay of the screen throwing end is monitored in the screen throwing process; if the touch time delay exceeds the preset time delay, starting to count video decoding time of a preset time to obtain the average decoding time. The humanized dynamic configuration scheme of the screen-throwing time delay is realized, so that the code rate and the frame rate in the screen-throwing process can be adaptively adjusted according to different screen-throwing time delays, and the requirements of users on the consistency and the fluency of screen-throwing experience of different screen-throwing ends are met.
Example III
Fig. 5 is a flowchart of a third embodiment of the method for dynamically configuring a screen-casting delay according to the present invention, based on the above embodiment, the drawing time is obtained according to each frame time in the current screen-casting process, including:
s21, acquiring an image frame rate in the screen projection process and acquiring the time per frame corresponding to the image frame rate.
S22, taking one half of each frame time as the drawing time.
Alternatively, in the present embodiment, considering that the basic decoding time plus the drawing time may be regarded as the time consuming from the whole one frame to the screen, the half of the time per frame is taken as the drawing time.
Alternatively, in the present embodiment, as described above for example, the average decoding time is X and the currently displayed frame rate per frame time, for example, 1000/90=11 ms in the case of 90hz, and X and 11/2=6 ms are compared.
The method has the advantages that the image frame rate in the screen projection process is obtained, and the time per frame corresponding to the image frame rate is obtained; and taking one half of the time per frame as the drawing time. The humanized dynamic configuration scheme of the screen-throwing time delay is realized, so that the code rate and the frame rate in the screen-throwing process can be adaptively adjusted according to different screen-throwing time delays, and the requirements of users on the consistency and the fluency of screen-throwing experience of different screen-throwing ends are met.
Example IV
Fig. 6 is a flowchart of a fourth embodiment of the method for dynamically configuring a screen-projection delay according to the present invention, based on the above embodiment, the comparing the average decoding time and the drawing time includes:
s31, determining a preset comparison frequency in a preset detection time.
S32, comparing the average decoding time with the drawing time according to the comparison frequency in the detection time.
Alternatively, in this embodiment, for example, 1-10 times per second is compared, and if X is all less than 11/2=6 ms, then the current decoding speed can be considered to be capable of smooth operation of the current frame rate and code rate.
Alternatively, in the present embodiment, if X occurs for more than 6ms, it is determined that the current decoding is too slow, and it is necessary to appropriately reduce the code rate.
The embodiment has the beneficial effects that the preset comparison frequency is determined in the preset detection time; and comparing the average decoding time with the drawing time according to the comparison frequency in the detection time. The humanized dynamic configuration scheme of the screen-throwing time delay is realized, so that the code rate and the frame rate in the screen-throwing process can be adaptively adjusted according to different screen-throwing time delays, and the requirements of users on the consistency and the fluency of screen-throwing experience of different screen-throwing ends are met.
Example five
Fig. 7 is a flowchart of a fifth embodiment of the method for dynamically configuring a screen-projection delay according to the present invention, based on the above embodiment, the comparing the average decoding time with the drawing time further includes:
And S33, if the average decoding time is greater than the drawing time in the detection time and is greater than the average decoding time in the drawing time, determining that the average decoding time is greater than the drawing time.
And S34, if the average decoding time is greater than the drawing time times and is less than the drawing time times at the detection time, determining that the average decoding time is less than the drawing time.
Optionally, in this embodiment, if the number of times that the average decoding time is greater than the drawing time and the number of times that the average decoding time is less than the drawing time are greater than a first preset ratio at the detection time, the average decoding time is determined to be greater than the drawing time.
Optionally, in this embodiment, if the number of times the average decoding time is greater than the drawing time and the number of times the average decoding time is less than the drawing time are less than the first preset ratio at the detection time, the average decoding time is determined to be less than the drawing time.
The embodiment has the beneficial effects that if the average decoding time is larger than the drawing time times and is larger than the average decoding time and is smaller than the drawing time times in the detection time, the average decoding time is determined to be larger than the drawing time; and if the average decoding time is more than the drawing time times and less than the average decoding time is less than the drawing time times at the detection time, determining that the average decoding time is less than the drawing time. The humanized dynamic configuration scheme of the screen-throwing time delay is realized, so that the code rate and the frame rate in the screen-throwing process can be adaptively adjusted according to different screen-throwing time delays, and the requirements of users on the consistency and the fluency of screen-throwing experience of different screen-throwing ends are met.
Example six
Fig. 8 is a flowchart of a sixth embodiment of the method for dynamically configuring a screen-projection delay according to the present invention, based on the above embodiment, the comparing the average decoding time with the drawing time further includes:
And S35, if the frequency of the average decoding time being greater than the drawing time is increasing at the detection time, determining that the average decoding time is greater than the drawing time.
And S36, if the frequency of the average decoding time being greater than the drawing time is reduced at the detection time, determining that the average decoding time is less than the drawing time.
Optionally, in this embodiment, if at the detection time, an increasing proportion of the frequency of the average decoding time being greater than the drawing time is greater than a second preset proportion, it is determined that the average decoding time is greater than the drawing time.
Optionally, in this embodiment, if an increasing proportion of the frequency of the average decoding time being greater than the drawing time is smaller than the second preset proportion at the detection time, it is determined that the average decoding time is smaller than the drawing time.
The embodiment has the beneficial effects that if the frequency that the average decoding time is larger than the drawing time is increased in the detection time, the average decoding time is determined to be larger than the drawing time; and if the frequency of the average decoding time being greater than the drawing time is decreasing at the detection time, determining that the average decoding time is less than the drawing time. The humanized dynamic configuration scheme of the screen-throwing time delay is realized, so that the code rate and the frame rate in the screen-throwing process can be adaptively adjusted according to different screen-throwing time delays, and the requirements of users on the consistency and the fluency of screen-throwing experience of different screen-throwing ends are met.
Example seven
Fig. 9 is a flowchart of a seventh embodiment of a dynamic configuration method for screen-dropping delay according to the present invention, based on the above embodiment, the reducing the image code rate in the screen-dropping process if the average decoding time is longer than the drawing time, and reducing the image frame rate in the screen-dropping process if the image code rate is smaller than a preset code rate, including:
S41, if the average decoding time is longer than the drawing time, gradually reducing the image code rate in the screen projection process according to a first amplitude value until the average decoding time is shorter than the drawing time.
S42, if the image code rate is smaller than the preset code rate and the average decoding time is longer than the drawing time in the process of gradually reducing the image code rate according to the first amplitude, gradually reducing the image frame rate in the screen throwing process according to the second amplitude.
Alternatively, in the present embodiment, when it is judged that the current decoding is too slow, the code rate to be reduced is set to 10m, that is, as the first amplitude value of the present embodiment.
Optionally, in this embodiment, if the decoding time X is found to be less than 6ms after the code rate is reduced, it may be determined that the current code rate is appropriate, and the current code rate is recorded.
Alternatively, in the present embodiment, a threshold value of 25 is set for the code rate reduction. If X is found to be greater than 6ms when it is reduced to 25m, the frame rate is reduced, for example, from 90hz to 60hz, and the condition for the determination is switched to 1000/60/2=8 ms. It can be seen that, through the above dynamic adjustment strategy, the problem of serious blocking in a high frame rate screen projection scene on a computer at the screen projection end generally does not occur any more.
The method has the advantages that if the average decoding time is larger than the drawing time, the image code rate in the screen throwing process is gradually reduced according to the first amplitude until the average decoding time is smaller than the drawing time; and if the image code rate is smaller than the preset code rate and the average decoding time is longer than the drawing time in the process of gradually reducing the image code rate according to the first amplitude, gradually reducing the image frame rate in the screen throwing process according to the second amplitude. The humanized dynamic configuration scheme of the screen-throwing time delay is realized, so that the code rate and the frame rate in the screen-throwing process can be adaptively adjusted according to different screen-throwing time delays, and the requirements of users on the consistency and the fluency of screen-throwing experience of different screen-throwing ends are met.
Example eight
Fig. 10 is a flowchart of an eighth embodiment of the dynamic configuration method for screen-projection delay according to the present invention, based on the above embodiment, the reducing the image code rate in the screen-projection process if the average decoding time is longer than the drawing time, and reducing the image frame rate in the screen-projection process if the image code rate is smaller than a preset code rate, including:
s43, setting the image code rate as the preset code rate.
And S44, if the average decoding time is smaller than the drawing time in the process of gradually reducing the image frame rate according to the second amplitude, taking the current image frame rate as the screen projection frame rate corresponding to the preset code rate.
Optionally, in this embodiment, if the average decoding time is less than the drawing time in the process of gradually reducing the image frame rate according to the second amplitude, the image frame rate is stopped from being reduced, and the current image frame rate is taken as the screen frame rate corresponding to the preset code rate.
Alternatively, in this embodiment, after stopping decreasing the image frame rate and taking the current image frame rate as the screen-dropping frame rate corresponding to the preset code rate, if the user manually decreases the image frame rate, the code rate is appropriately increased within the above-mentioned determined range.
The beneficial effects of the embodiment are that the image code rate is set as the preset code rate; and if the average decoding time is smaller than the drawing time in the process of gradually reducing the image frame rate according to the second amplitude, taking the current image frame rate as the screen projection frame rate corresponding to the preset code rate. The humanized dynamic configuration scheme of the screen-throwing time delay is realized, so that the code rate and the frame rate in the screen-throwing process can be adaptively adjusted according to different screen-throwing time delays, and the requirements of users on the consistency and the fluency of screen-throwing experience of different screen-throwing ends are met.
Example nine
Based on the above embodiment, the present invention further provides a device for dynamically configuring a screen-casting delay, where the device includes a memory, a processor, and a computer program stored in the memory and capable of running on the processor, where the computer program when executed by the processor implements the steps of the method for dynamically configuring a screen-casting delay as set forth in any one of the above.
It should be noted that the above device embodiments and method embodiments belong to the same concept, the specific implementation process of the device embodiments is detailed in the method embodiments, and technical features in the method embodiments are correspondingly applicable to the device embodiments, which are not repeated herein.
Examples ten
Based on the above embodiment, the present invention further provides a computer readable storage medium, where a dynamic configuration program for screen-casting delay is stored, and when the dynamic configuration program for screen-casting delay is executed by a processor, the steps of the dynamic configuration method for screen-casting delay according to any one of the above steps are implemented.
It should be noted that the medium embodiment and the method embodiment belong to the same concept, the specific implementation process of the medium embodiment and the method embodiment are detailed, and technical features in the method embodiment are correspondingly applicable in the medium embodiment, which is not repeated herein.
It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.
The foregoing embodiment numbers of the present invention are merely for the purpose of description, and do not represent the advantages or disadvantages of the embodiments.
From the above description of the embodiments, it will be clear to those skilled in the art that the above-described embodiment method may be implemented by means of software plus a necessary general hardware platform, but of course may also be implemented by means of hardware, but in many cases the former is a preferred embodiment. Based on such understanding, the technical solution of the present invention may be embodied essentially or in a part contributing to the prior art in the form of a software product stored in a storage medium (e.g. ROM/RAM, magnetic disk, optical disk) comprising instructions for causing a terminal (which may be a mobile phone, a computer, a server, an air conditioner, or a network device, etc.) to perform the method according to the embodiments of the present invention.
The embodiments of the present invention have been described above with reference to the accompanying drawings, but the present invention is not limited to the above-described embodiments, which are merely illustrative and not restrictive, and many forms may be made by those having ordinary skill in the art without departing from the spirit of the present invention and the scope of the claims, which are to be protected by the present invention.
Claims (9)
1. The method for dynamically configuring the screen throwing time delay is characterized by comprising the following steps of:
counting the video decoding time obtained in the screen throwing process of one section to obtain average decoding time;
Obtaining drawing time according to each frame time in the current screen throwing process;
comparing the average decoding time with the drawing time;
If the average decoding time is longer than the drawing time, reducing the image code rate in the screen projection process, and if the image code rate is shorter than a preset code rate, reducing the image frame rate in the screen projection process;
The drawing time obtaining according to each frame time in the current screen projection process comprises the following steps:
Acquiring an image frame rate in the screen projection process, and acquiring the time per frame corresponding to the image frame rate;
and taking one half of the time per frame as the drawing time.
2. The method for dynamically configuring the screen-throwing delay according to claim 1, wherein the step of counting the video decoding time acquired in the screen-throwing process for one period to obtain an average decoding time comprises the steps of:
in the screen throwing process, monitoring touch time delay of a screen throwing end;
If the touch time delay exceeds the preset time delay, starting to count video decoding time of a preset time to obtain the average decoding time.
3. The method of claim 2, wherein the comparing the average decoding time and the rendering time comprises:
determining a preset comparison frequency within a preset detection time;
And comparing the average decoding time with the drawing time according to the comparison frequency in the detection time.
4. The method of dynamic configuration of a screen-break delay of claim 3, wherein said comparing said average decoding time and said rendering time further comprises:
If the average decoding time is greater than the drawing time times and is greater than the average decoding time and is less than the drawing time times at the detection time, determining that the average decoding time is greater than the drawing time;
and if the average decoding time is more than the drawing time times and less than the average decoding time is less than the drawing time times at the detection time, determining that the average decoding time is less than the drawing time.
5. The method of claim 4, wherein the comparing the average decoding time and the rendering time further comprises:
If the frequency of the average decoding time being greater than the drawing time is increasing at the detection time, determining that the average decoding time is greater than the drawing time;
and if the frequency of the average decoding time being greater than the drawing time is decreasing at the detection time, determining that the average decoding time is less than the drawing time.
6. The method for dynamically configuring the screen-projection delay according to claim 5, wherein if the average decoding time is longer than the drawing time, reducing the image code rate in the screen-projection process, and if the image code rate is smaller than a preset code rate, reducing the image frame rate in the screen-projection process, comprises:
if the average decoding time is longer than the drawing time, gradually reducing the image code rate in the screen throwing process according to a first amplitude value until the average decoding time is shorter than the drawing time;
and if the image code rate is smaller than the preset code rate and the average decoding time is longer than the drawing time in the process of gradually reducing the image code rate according to the first amplitude, gradually reducing the image frame rate in the screen throwing process according to the second amplitude.
7. The method for dynamically configuring the screen-projection delay according to claim 6, wherein if the average decoding time is longer than the drawing time, reducing the image code rate in the screen-projection process, and if the image code rate is smaller than a preset code rate, reducing the image frame rate in the screen-projection process, comprises:
setting the image code rate as the preset code rate;
And if the average decoding time is smaller than the drawing time in the process of gradually reducing the image frame rate according to the second amplitude, taking the current image frame rate as the screen projection frame rate corresponding to the preset code rate.
8. A device for dynamic configuration of a screen break time delay, characterized in that the device comprises a memory, a processor and a computer program stored on the memory and executable on the processor, which computer program, when executed by the processor, implements the steps of the method for dynamic configuration of a screen break time delay according to any of claims 1 to 7.
9. A computer readable storage medium, characterized in that the computer readable storage medium has stored thereon a screen-break delay dynamic configuration program, which when executed by a processor, implements the steps of the screen-break delay dynamic configuration method according to any one of claims 1 to 7.
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