CN113613047A - Media file playing control method and display device - Google Patents
Media file playing control method and display device Download PDFInfo
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Abstract
The invention discloses a media file playing control method and display equipment, which are used for positioning a target video file selected by a user in a storage equipment directory; before a user starts playing the target video file, decoding information configured in a thumbnail of the target video file is acquired, and image quality configuration data generated according to the decoding information in a matching mode is injected into a graphic processor; when receiving an operation that a user starts playing the target video file, firstly controlling a graphic processor to refresh the image quality according to the image quality configuration data, and then controlling a display to display the target video file. The method and the device can eliminate the display abnormity such as image quality effect mutation, screen splash or screen flashing and the like existing when the video is played, and the time synchronism of the video playing and image quality refreshing actions is not required to be corrected, so that the time consumed by video drawing is shortened, the performance of a video player is ensured, and the playing efficiency and the display effect of the video file are improved.
Description
Technical Field
The present invention relates to the field of display devices, and in particular, to a media file playing control method and a display device.
Background
USB (Universal Serial Bus) is one of physical interfaces of a display device, and the display device can be connected to an external storage device, such as a USB disk, a hard disk, and a card reader, through the USB interface. In some application scenarios, a user stores media files such as videos, images and audios which are interested in a U disk in advance, connects the U disk to a USB interface of a display device, and then selects the media files in the U disk to play locally at the display device.
After a user clicks a video file in a playing U disk, the display device starts the video player, acquires image quality configuration data of a video in the starting process of the video player, and refreshes the image quality according to the image quality configuration data, so that a video picture displayed by the display device has a preset image quality effect. However, the inventor finds that, in the practical application process, when the video player is started and outputs a video picture, the image quality configuration data may not be valid yet, so that image quality effects such as brightness and color of the picture suddenly change, and even abnormal display states such as instantaneous screen flashing and screen blurring occur during video display.
Disclosure of Invention
In order to solve the technical problems discussed in the background art, the present invention provides a media file playing control method and a display device.
A first aspect provides a display device comprising:
a display for displaying a local media file;
the USB interface is used for externally connecting storage equipment;
a controller configured to perform:
positioning a target video file selected by a user in a storage device directory;
before a user starts playing the target video file, decoding information configured in a thumbnail of the target video file is acquired, and image quality configuration data generated according to the decoding information in a matching mode is injected into a graphic processor;
when receiving an operation that a user starts playing the target video file, firstly controlling a graphic processor to refresh the image quality according to the image quality configuration data, and then controlling a display to display the target video file.
In a first exemplary implementation manner of the first aspect, the controller is configured to locate the target video file as follows:
after the storage device is accessed, in response to receiving an operation of opening the storage device, controlling a display to display the storage device directory; the storage device directory comprises preview images of various local media files stored in the storage device, wherein the preview images of the video files are thumbnails of one frame of image in the video;
and when the fact that the stay time of the focus of the remote controller on a certain video file reaches a preset duration is detected, recording the video file where the current focus is located as the target video file.
In a second exemplary implementation manner of the first aspect, the controller is further configured to perform: and after the image quality configuration data is injected into the graphics processor, controlling the graphics processor to keep a waiting state, wherein the waiting state refers to that the graphics processor does not execute the action of refreshing the image quality temporarily.
In a third exemplary implementation manner of the first aspect, the controller is further configured to perform: and if receiving an operation that a user starts playing the target video file, switching the graphics processor from a waiting state to a refreshing state, wherein the refreshing state refers to that the graphics processor triggers the image quality configuration data to take effect so as to execute an action of refreshing the image quality.
In a fourth exemplary implementation manner of the first aspect, the controller is further configured to perform: and if the operation that the user starts playing the target video file is not received all the time within the overtime, or if the current focus is detected to be separated from the target video file, controlling the image processor to clear the injected image quality configuration data, and enabling the image processor to be recovered to the initial state.
A media file playing control method provided in a second aspect includes:
positioning a target video file selected by a user in a storage device directory;
before a user starts playing the target video file, decoding information configured in a thumbnail of the target video file is acquired, and image quality configuration data generated according to the decoding information in a matching mode is injected into a graphic processor;
when receiving an operation that a user starts playing the target video file, firstly controlling a graphic processor to refresh the image quality according to the image quality configuration data, and then controlling a display to display the target video file.
In a first exemplary implementation manner of the second aspect, the locating a target video file selected by a user in a storage device directory includes:
after the storage device is accessed, in response to receiving an operation of opening the storage device, controlling a display to display the storage device directory; the storage device directory comprises preview images of various local media files stored in the storage device, wherein the preview images of the video files are thumbnails of one frame of image in the video;
and when the fact that the stay time of the focus of the remote controller on a certain video file reaches a preset duration is detected, recording the video file where the current focus is located as the target video file.
In a second exemplary implementation manner of the second aspect, the method further includes: and after the image quality configuration data is injected into the graphics processor, controlling the graphics processor to keep a waiting state, wherein the waiting state refers to that the graphics processor does not execute the action of refreshing the image quality temporarily.
In a third exemplary implementation manner of the second aspect, the method further includes: and if receiving an operation that a user starts playing the target video file, switching the graphics processor from a waiting state to a refreshing state, wherein the refreshing state refers to that the graphics processor triggers the image quality configuration data to take effect so as to execute an action of refreshing the image quality.
In a fourth exemplary implementation manner of the second aspect, the method further includes: and if the operation that the user starts playing the target video file is not received all the time within the overtime, or if the current focus is detected to be separated from the target video file, controlling the image processor to clear the injected image quality configuration data, and enabling the image processor to be recovered to the initial state.
In an application scenario applicable to the application, after a user accesses a storage device such as a USB disk, a hard disk, or a card reader to a display device through a USB interface, the user may open the storage device and enter a directory of the storage device, and on a directory page, the user may know the number of local media files currently stored in the storage device and the resource types, where the resource types include, but are not limited to, video, audio, images, documents, and the like, and the user may locate a target video file that the user wants to view through modes such as moving a focus, searching a file, and the like.
The local multimedia playing control mechanism provided by the application reads a thumbnail of a target video file before a user starts playing the target video file, wherein the thumbnail is an image obtained by compressing a certain frame of image in the target video file, and the thumbnail carries decoding information of the target video file, the decoding information comprises but is not limited to resolution, HDR type, refreshing frequency/frame rate and the like, a group of image quality configuration data can be generated by matching the decoding information, the image quality configuration data is loaded in advance and injected into a graphic processor, when the user starts playing the target video file, the image processor can enable the image quality configuration data to be instantly effective, namely the image quality refreshing action is finished before a display device outputs a video picture, and the video picture has a pre-configured image quality effect when the display device plays the video picture, therefore, display abnormalities such as abrupt change of image quality effect, screen splash or screen flashing and the like existing in the video playing process are eliminated, and the time synchronism of the video playing starting action and the image quality refreshing action does not need to be corrected, so that the time consumed by video drawing is shortened, the performance of a video player is ensured, and the playing efficiency and the display effect of a video file are improved.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings to be accessed in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.
FIG. 1 illustrates a usage scenario of a display device according to some embodiments;
fig. 2 illustrates a hardware configuration block diagram of the control apparatus 100 according to some embodiments;
fig. 3 illustrates a hardware configuration block diagram of the display apparatus 200 according to some embodiments;
FIG. 4 illustrates a software configuration diagram in the display device 200 according to some embodiments;
FIG. 5 illustrates a schematic diagram of a display device displaying a storage device directory;
FIG. 6 illustrates a schematic diagram of conventional playback control logic for a local video file;
FIG. 7 is a flow chart illustrating a method of controlling playback of a media file;
fig. 8 is a schematic diagram illustrating an improved local video file playback control logic according to the present application.
Detailed Description
To make the purpose and embodiments of the present application clearer, the following will clearly and completely describe the exemplary embodiments of the present application with reference to the attached drawings in the exemplary embodiments of the present application, and it is obvious that the described exemplary embodiments are only a part of the embodiments of the present application, and not all of the embodiments.
It should be noted that the brief descriptions of the terms in the present application are only for the convenience of understanding the embodiments described below, and are not intended to limit the embodiments of the present application. These terms should be understood in their ordinary and customary meaning unless otherwise indicated.
The terms "first," "second," "third," and the like in the description and claims of this application and in the above-described drawings are used for distinguishing between similar or analogous objects or entities and not necessarily for describing a particular sequential or chronological order, unless otherwise indicated. It is to be understood that the terms so used are interchangeable under appropriate circumstances.
The terms "comprises" and "comprising," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a product or apparatus that comprises a list of elements is not necessarily limited to all elements expressly listed, but may include other elements not expressly listed or inherent to such product or apparatus.
The term "module" refers to any known or later developed hardware, software, firmware, artificial intelligence, fuzzy logic, or combination of hardware and/or software code that is capable of performing the functionality associated with that element.
Fig. 1 is a schematic diagram of a usage scenario of a display device according to an embodiment. As shown in fig. 1, the display apparatus 200 is also in data communication with a server 400, and a user can operate the display apparatus 200 through the smart device 300 or the control device 100.
In some embodiments, the control apparatus 100 may be a remote controller, and the communication between the remote controller and the display device includes at least one of an infrared protocol communication or a bluetooth protocol communication, and other short-distance communication methods, and controls the display device 200 in a wireless or wired manner. The user may control the display apparatus 200 by inputting a user instruction through at least one of a key on a remote controller, a voice input, a control panel input, and the like.
In some embodiments, the smart device 300 may include any of a mobile terminal, a tablet, a computer, a laptop, an AR/VR device, and the like.
In some embodiments, the smart device 300 may also be used to control the display device 200. For example, the display device 200 is controlled using an application program running on the smart device.
In some embodiments, the smart device 300 and the display device may also be used for communication of data.
In some embodiments, the display device 200 may also be controlled in a manner other than the control apparatus 100 and the smart device 300, for example, the voice instruction control of the user may be directly received by a module configured inside the display device 200 to obtain a voice instruction, or may be received by a voice control apparatus provided outside the display device 200.
In some embodiments, the display device 200 is also in data communication with a server 400. The display device 200 may be allowed to be communicatively connected through a Local Area Network (LAN), a Wireless Local Area Network (WLAN), and other networks. The server 400 may provide various contents and interactions to the display apparatus 200. The server 400 may be a cluster or a plurality of clusters, and may include one or more types of servers.
In some embodiments, software steps executed by one step execution agent may be migrated on demand to another step execution agent in data communication therewith for execution. Illustratively, software steps performed by the server may be migrated to be performed on a display device in data communication therewith, and vice versa, as desired.
Fig. 2 exemplarily shows a block diagram of a configuration of the control apparatus 100 according to an exemplary embodiment. As shown in fig. 2, the control device 100 includes a controller 110, a communication interface 130, a user input/output interface 140, a memory, and a power supply. The control apparatus 100 may receive an input operation instruction from a user and convert the operation instruction into an instruction recognizable and responsive by the display device 200, serving as an interaction intermediary between the user and the display device 200.
In some embodiments, the communication interface 130 is used for external communication, and includes at least one of a WIFI chip, a bluetooth module, NFC, or an alternative module.
In some embodiments, the user input/output interface 140 includes at least one of a microphone, a touchpad, a sensor, a key, or an alternative module.
Fig. 3 shows a hardware configuration block diagram of the display apparatus 200 according to an exemplary embodiment.
In some embodiments, the display apparatus 200 includes at least one of a tuner demodulator 210, a communicator 220, a detector 230, an external device interface 240, a controller 250, a display 260, an audio output interface 270, a memory, a power supply, a user interface.
In some embodiments the controller comprises a central processor, a video processor, an audio processor, a graphics processor, a RAM, a ROM, a first interface to an nth interface for input/output.
In some embodiments, the display 260 includes a display screen component for displaying pictures, and a driving component for driving image display, a component for receiving image signals from the controller output, displaying video content, image content, and menu manipulation interface, and a user manipulation UI interface, etc.
In some embodiments, the display 260 may be at least one of a liquid crystal display, an OLED display, and a projection display, and may also be a projection device and a projection screen.
In some embodiments, the tuner demodulator 210 receives broadcast television signals via wired or wireless reception, and demodulates audio/video signals, such as EPG data signals, from a plurality of wireless or wired broadcast television signals.
In some embodiments, communicator 220 is a component for communicating with external devices or servers according to various communication protocol types. For example: the communicator may include at least one of a Wifi module, a bluetooth module, a wired ethernet module, and other network communication protocol chips or near field communication protocol chips, and an infrared receiver. The display apparatus 200 may establish transmission and reception of control signals and data signals with the control device 100 or the server 400 through the communicator 220.
In some embodiments, the detector 230 is used to collect signals of the external environment or interaction with the outside. For example, detector 230 includes a light receiver, a sensor for collecting ambient light intensity; alternatively, the detector 230 includes an image collector, such as a camera, which may be used to collect external environment scenes, attributes of the user, or user interaction gestures, or the detector 230 includes a sound collector, such as a microphone, which is used to receive external sounds.
In some embodiments, the external device interface 240 may include, but is not limited to, the following: high Definition Multimedia Interface (HDMI), analog or data high definition component input interface (component), composite video input interface (CVBS), USB input interface (USB), RGB port, and the like. The interface may be a composite input/output interface formed by the plurality of interfaces.
In some embodiments, the controller 250 and the modem 210 may be located in different separate devices, that is, the modem 210 may also be located in an external device of the main device where the controller 250 is located, such as an external set-top box.
In some embodiments, the controller 250 controls the operation of the display device and responds to user operations through various software control programs stored in memory. The controller 250 controls the overall operation of the display apparatus 200. For example: in response to receiving a user command for selecting a UI object to be displayed on the display 260, the controller 250 may perform an operation related to the object selected by the user command.
In some embodiments, the object may be any one of selectable objects, such as a hyperlink, an icon, or other actionable control. The operations related to the selected object are: displaying an operation connected to a hyperlink page, document, image, or the like, or performing an operation of a program corresponding to the icon.
In some embodiments the controller comprises at least one of a Central Processing Unit (CPU), a video processor, an audio processor, a Graphics Processing Unit (GPU), a RAM Random Access Memory (RAM), a ROM (Read-Only Memory), a first to nth interface for input/output, a communication Bus (Bus), and the like.
A CPU processor. For executing operating system and application program instructions stored in the memory, and executing various application programs, data and contents according to various interactive instructions receiving external input, so as to finally display and play various audio-video contents. The CPU processor may include a plurality of processors. E.g. comprising a main processor and one or more sub-processors.
In some embodiments, a graphics processor for generating various graphics objects, such as: at least one of an icon, an operation menu, and a user input instruction display figure. The graphic processor comprises an arithmetic unit, which performs operation by receiving various interactive instructions input by a user and displays various objects according to display attributes; the system also comprises a renderer for rendering various objects obtained based on the arithmetic unit, wherein the rendered objects are used for being displayed on a display.
In some embodiments, the video processor is configured to receive an external video signal, and perform at least one of video processing such as decompression, decoding, scaling, noise reduction, frame rate conversion, resolution conversion, and image synthesis according to a standard codec protocol of the input signal, so as to obtain a signal displayed or played on the direct display device 200.
In some embodiments, the video processor includes at least one of a demultiplexing module, a video decoding module, an image composition module, a frame rate conversion module, a display formatting module, and the like. The demultiplexing module is used for demultiplexing the input audio and video data stream. And the video decoding module is used for processing the video signal after demultiplexing, including decoding, scaling and the like. And the image synthesis module is used for carrying out superposition mixing processing on the GUI signal input by the user or generated by the user and the video image after the zooming processing by the graphic generator so as to generate an image signal for display. And the frame rate conversion module is used for converting the frame rate of the input video. And the display formatting module is used for converting the received video output signal after the frame rate conversion, and changing the signal to be in accordance with the signal of the display format, such as an output RGB data signal.
In some embodiments, the audio processor is configured to receive an external audio signal, decompress and decode the received audio signal according to a standard codec protocol of the input signal, and perform at least one of noise reduction, digital-to-analog conversion, and amplification processing to obtain a sound signal that can be played in the speaker.
In some embodiments, a user may enter user commands on a Graphical User Interface (GUI) displayed on display 260, and the user input interface receives the user input commands through the Graphical User Interface (GUI). Alternatively, the user may input the user command by inputting a specific sound or gesture, and the user input interface receives the user input command by recognizing the sound or gesture through the sensor.
In some embodiments, a "user interface" is a media interface for interaction and information exchange between an application or operating system and a user that enables conversion between an internal form of information and a form that is acceptable to the user. A commonly used presentation form of the User Interface is a Graphical User Interface (GUI), which refers to a User Interface related to computer operations and displayed in a graphical manner. It may be an interface element such as an icon, a window, a control, etc. displayed in the display screen of the electronic device, where the control may include at least one of an icon, a button, a menu, a tab, a text box, a dialog box, a status bar, a navigation bar, a Widget, etc. visual interface elements.
In some embodiments, user interface 280 is an interface that may be used to receive control inputs (e.g., physical buttons on the body of the display device, or the like).
In some embodiments, a system of a display device may include a Kernel (Kernel), a command parser (shell), a file system, and an application program. The kernel, shell, and file system together make up the basic operating system structure that allows users to manage files, run programs, and use the system. After power-on, the kernel is started, kernel space is activated, hardware is abstracted, hardware parameters are initialized, and virtual memory, a scheduler, signals and interprocess communication (IPC) are operated and maintained. And after the kernel is started, loading the Shell and the user application program. The application program is compiled into machine code after being started, and a process is formed.
Referring to fig. 4, in some embodiments, the system is divided into four layers, which are an Application (Applications) layer (abbreviated as "Application layer"), an Application Framework (Application Framework) layer (abbreviated as "Framework layer"), an Android runtime (Android runtime) and system library layer (abbreviated as "system runtime library layer"), and a kernel layer from top to bottom.
In some embodiments, at least one application program runs in the application program layer, and the application programs may be windows (windows) programs carried by an operating system, system setting programs, clock programs or the like; or an application developed by a third party developer. In particular implementations, the application packages in the application layer are not limited to the above examples.
The framework layer provides an Application Programming Interface (API) and a programming framework for the application program of the application layer. The application framework layer includes a number of predefined functions. The application framework layer acts as a processing center that decides to let the applications in the application layer act. The application program can access the resources in the system and obtain the services of the system in execution through the API interface.
As shown in fig. 4, in the embodiment of the present application, the application framework layer includes a manager (Managers), a Content Provider (Content Provider), and the like, where the manager includes at least one of the following modules: an Activity Manager (Activity Manager) is used for interacting with all activities running in the system; the Location Manager (Location Manager) is used for providing the system service or application with the access of the system Location service; a Package Manager (Package Manager) for retrieving various information related to an application Package currently installed on the device; a Notification Manager (Notification Manager) for controlling display and clearing of Notification messages; a Window Manager (Window Manager) is used to manage the icons, windows, toolbars, wallpapers, and desktop components on a user interface.
In some embodiments, the activity manager is used to manage the lifecycle of the various applications as well as general navigational fallback functions, such as controlling exit, opening, fallback, etc. of the applications. The window manager is used for managing all window programs, such as obtaining the size of a display screen, judging whether a status bar exists, locking the screen, intercepting the screen, controlling the change of the display window (for example, reducing the display window, displaying a shake, displaying a distortion deformation, and the like), and the like.
In some embodiments, the system runtime layer provides support for the upper layer, i.e., the framework layer, and when the framework layer is used, the android operating system runs the C/C + + library included in the system runtime layer to implement the functions to be implemented by the framework layer.
In some embodiments, the kernel layer is a layer between hardware and software. As shown in fig. 4, the core layer includes at least one of the following drivers: audio drive, display driver, bluetooth drive, camera drive, WIFI drive, USB drive, HDMI drive, sensor drive (like fingerprint sensor, temperature sensor, pressure sensor etc.) and power drive etc..
The above embodiments describe the hardware/software architecture and functional implementation of the display device. In some application scenarios, the display device is externally provided with multiple types of physical interfaces, where the USB interface is used to connect an external storage device, such as a USB disk, a hard disk, and a card reader. The storage device can store local media files of different resource types, such as video files, audio files, images, texts, documents and the like, and the media files stored in the storage device can be displayed or played at the display device end.
In some exemplary implementations, when the storage device is connected to the display device through the USB interface, the display device may automatically pop up the storage device directory; alternatively, the user may access the connected storage device through the designated path/entry, and after clicking to open the storage device, the UI automatically displays the storage device directory.
In an exemplary implementation, fig. 5 provides a UI example of a storage device directory that includes various local media files saved by the storage device, and optionally, the local media files are visually and vividly presented to a user for browsing in the form of preview images, such as folder icons, audio icons, thumbnails of videos and images, and the like. To facilitate accurate user resolution and distinction of files, file information, such as folder names, file media asset information, etc., may be annotated below each preview image, where the file media asset information includes, but is not limited to, asset names, video profiles, asset formats (e.g., AVI, mp3, etc.), etc., of related content.
In an exemplary implementation, a thumbnail of a video file is actually a snapshot of a file resource, and it is understood that a video file is organized by consecutive frames of still images, and a thumbnail is essentially an image formed by compressing a frame of still image in a video file. For example, the video a with the refresh frequency of 30hz and the play time of 60 seconds has 1800 frames in total, and a thumbnail of the video a is obtained by compressing one frame selected from the 1800 frames. Alternatively, for video files in the storage device directory, referring to fig. 5, the playback time length of the video file may be noted on the thumbnail.
In one exemplary implementation, the thumbnails may be associated with playback links of the video files, such that when a user clicks on a thumbnail, the display device automatically launches a video player, which initiates playback of the corresponding video file via the playback link associated with the thumbnail.
If a user wants to start a certain target video file in the playing directory, the user needs to locate the position of the thumbnail of the target video file first and then click the thumbnail, so that the user jumps to a video playing interface. In an exemplary implementation, a user may switch the focus of a file in a directory by operating a remote control, for example, the user may move the remote control or press a direction key on the remote control. Alternatively, the display device may highlight the file in which the focus is located, and referring to fig. 5, the current focus is moved to "jubilation 10 th set", and a focus frame may be provided at the periphery of the thumbnail of this video file of "jubilation 10 th set", and the presentation effect (including thickness, line type, etc.) of the focus frame is not limited. Of course, other possible focus reminding manners may also be adopted, such as appropriately zooming the thumbnail pointed by the focus, and the like, so that the user can quickly and intuitively distinguish the focus.
In some exemplary implementations, referring to fig. 5, a search control may be further set in a page of a storage device directory, a user may input at least one keyword related to a file in the search control, and then click to confirm, if a display device retrieves a target file matching the keyword from the storage device, only the searched target file is displayed in a search result page, and other files are filtered out. For example, the user may input a keyword "song" in the search control, that is, may search for a target video file "song 10 th set". In other possibilities, if the display device does not retrieve the target file matched with the keyword, that is, the current search target is empty, the display device may prompt that the file meeting the requirement is not searched in the search result page.
In some exemplary implementations, referring to fig. 5, a voice control may also be set in the page of the storage device directory, and the user may click on the voice control to input voice information according to his behavior and intention. For example, the user inputs "search song" by voice, the display device learns that the user intends to be a search document and that the search target is related to "song" by semantic analysis, that is, a video document of "song 10 th set" can be searched; for another example, the user inputs "play song" by voice, and the display device starts playing a video file of "song set 10" in response to the voice information.
In a conventional implementation manner, the conventional play control logic for the local video file illustrated with reference to fig. 6 includes two independently running processes, namely a Player startup process and a PQ (Picture Quality) processing process, respectively, where the Player startup process corresponds to the video Player and the PQ processing process corresponds to the GPU. And when the Player starting process detects that the user starts playing the target video file, the video Player is started immediately, and in the starting process of the video Player, the video Player acquires the decoding information of the target video file, sends the decoding information to the PQ processing process and further triggers the PQ processing process. The decoding information includes, but is not limited to, resolution, HDR (High-Dynamic Range) type, scan format (i/p), refresh frequency, and the like, and is used to limit the quality of the video pictures to be displayed on the screen.
The GPU is a graphics processor, and its functions include adjusting the image quality of a video frame, and the GPU can set various image quality parameters including but not limited to brightness, saturation, contrast, sharpness, etc. when the configuration of the image quality parameters is valid, an adaptive image quality effect can be generated or the image quality can be refreshed. Therefore, after receiving the decoding information, the PQ processing process needs to generate image quality configuration data according to the decoding information in a matching manner, which is called loading the image quality configuration data. The image quality configuration data comprises configuration values of various image quality parameters of the GPU, and when the GPU triggers the image quality configuration data to take effect, the output video image has the image quality effect specified by the decoding information.
After the image quality configuration data is loaded, the PQ processing process injects the image quality configuration data into the GPU, and the GPU triggers the image quality configuration data to take effect immediately after refreshing the configuration values of all image quality parameters. However, the loading and injecting of the image configuration data will take time, and the generated time consumption is slightly different along with the system state, during this period, the video player is still continuously started, once the processing time consumption of the PQ processing process exceeds the start time of the video player, the video player is started completely, that is, when the video picture can be displayed, the image configuration data is not yet valid, that is, the GPU in fig. 6 is in the PQ in absolute case state, and when the image configuration data becomes valid after the picture is displayed, the image effects such as brightness, color and the like of the picture may suddenly change, even generate phenomena such as flickering and blooming.
One conceivable solution is to consider optimizing the speed of loading and injecting the picture quality configuration data to shorten the processing time of the PQ processing process, but in a practical application scenario, the loading and injecting of the picture quality configuration data is limited by the system performance of the display device, and thus has a limitation in actually optimizing the local media playback.
Another conceivable solution is to consider to delay the drawing time of the video frame, that is, to relatively increase the start-up duration of the video player, for example, after the GPU triggers the image quality configuration data to take effect, feedback the information indicating that the image has taken effect to the video player; when the video player receives the effective indication information, the video player can know that the image quality configuration is refreshed, and then plays the video file and displays the corresponding video picture. However, the scheme has the defect that the video player is started for a long time, so that a picture is displayed after a long-time black screen is presented, and the performance of the video player is reduced to a certain extent.
To solve the problems and defects in the application scenarios described above, as shown in fig. 7, the present application provides a media file playing control method, which is described from the perspective of execution and control of a controller 250, and includes the following program steps:
step S01, locate the target video file selected by the user in the storage device directory.
In an exemplary implementation manner, after the storage device is connected to the display device through the USB interface, and when the controller receives an operation of opening the storage device by a user, the controller controls the display to display a storage device directory, which may be referred to as an example in fig. 5, where the storage device directory includes a preview of a stored local media file, and the preview of a video file is a thumbnail of a frame image in a video.
In an exemplary implementation, a user may operate a remote control to move the focus to a location in a directory page, it being understood that when the focus is switched to a file that is not of interest to the user, the user will typically move the focus away quickly to more quickly locate a preferred target file, and thus may be able to locate the preferred target file by the dwell time T of the focus on a video filestayThe probability/probability that the video file is selected by the user and starts playing is measured, and a preset duration T is set based on the probability/probabilitypBy setting the residence time TstayAnd a preset time length TpAnd comparing to realize positioning and locking to the target video file in advance before the target video file is started to play. Wherein the preset time length TpThe value of (a) may be set according to practical application, for example, set to 500ms, and the application is not particularly limited.
In some exemplary implementations, the controller tracks the focus position in real-time as the storage device directory is displayed, and detects whether the file to which the focus is directed is a video file/image. If the focus point is not a video file/image, then the PQ processing process is not involved and the file is played in a conventional manner.
In some exemplary implementations, if the focus is directed to a video file/image, the dwell time T of the focus on the video file/image is detected in a timed mannerstayIf the dwell time T isstayLess than a preset time period TpThe dwell time of the focus on the file is short, and the focus may only flash, and the possibility that the user views the video file/image is considered to be low, and the video file/image is not the final positioned target video file; if the dwell time T isstayIs greater than or equal to the preset time length TpIf the video file/image is considered to be watched by the user with a high probability, the video file/image where the current focus is located is recorded as a target video file. Optionally, the resource ID of the target video file is recorded, and which file in the storage device is the target video file captured in advance can be accurately identified by the resource ID.
In other exemplary implementations, referring to the example of fig. 5, for example, a user searches for a target video file satisfying his interest preference and viewing desire through a search control in a storage device directory on a full-disc basis, and the controller records the resource ID of the target video file when the target video file is retrieved, that is, when the advance positioning capture of the target video file is completed.
In other exemplary implementations, referring to the example of fig. 5, for example, a user inputs voice information meeting the self behavioral intention by clicking a voice control in a storage device directory, a display device collects the voice information input by the user, performs parsing processing such as word segmentation and semantic analysis on the voice information, for example, the user says "play song" towards the voice control, and after parsing by the display device, can acquire a keyword of a target object therein as "song", searches for a file related to "song" in the whole disc, and searches for the target video file as the 10 th set of song, records a resource ID of the target video file, thereby capturing and positioning the target video file in advance before initiating a play action. It should be noted that, the implementation scheme for locating the target video file may be adapted according to the operation mode of the user for locating and triggering the playing of the video file in the storage device, and should not be limited to the example provided in the embodiment of the present application.
And step S02, before the user starts playing the target video file, acquiring the decoding information carried in the thumbnail of the target video file.
Before a user starts playing a target video file, the display device is positioned and captures the possible target video file in advance, the target video file is displayed in a directory page in a thumbnail mode, the controller can directly read a thumbnail of the target video file from the storage device, the thumbnail generally carries decoding information of the target video file, and the decoding information comprises but is not limited to resolution, HDR type, refreshing frequency and the like.
In step S03, image quality arrangement data is generated by matching the decoded information.
In step S03, the decoding information is converted into image configuration data adapted to be processed by the GPU, which is a loading link of the image configuration data, where the image configuration data includes configuration values of various image parameters in the GPU, and the image parameters include, but are not limited to, brightness, contrast, saturation, sharpness, and the like.
In step S04, the image quality configuration data is injected into a graphics processor.
And step S05, when receiving the operation that the user starts playing the target video file, firstly controlling the image processor to refresh the image quality according to the image quality configuration data, and then controlling the display to display the target video file.
Through the steps, loading and injection links of image quality configuration data which are relatively long in time consumption in a PQ processing process are completed in advance before a video player is started, and after the GPU receives and injects the image quality configuration data, the GPU has the capacity of immediately triggering the image quality configuration data to take effect, namely the time consumed by the GPU for executing the image quality refreshing action is very short (can be ignored), so that the image quality refreshing action is completed before a display device outputs the picture of a target video file, the video picture has a pre-configured image quality effect when the display shows the picture, the display abnormity such as image quality effect mutation, screen splash or screen flashing and the like existing in the video playing process is eliminated, the time synchronism of the video playing starting and the image quality refreshing action does not need to be corrected, the time consumed by the video playing is shortened, the performance of the video player is ensured, and the playing efficiency and the display effect of the video file are improved.
In some application scenarios, for example, a user moves a focus to a video file 1, and stays on the video file 1 for more than a preset time, and then the user starts playing the video file 1; or, the user leaves somehow, which causes the focus to stay on the video file 1 for a long time, but the video file 1 is not started to play all the time; or, the operation focus of the user is paused on the video file 1 for a while, image configuration data 1 corresponding to the video file 1 is injected into the GPU in advance, and if the user shifts the focus to the video file 2 later and starts playing the video file 2, if the GPU makes the image configuration data 1 effective, the video file 2 will present the image quality effect of the video file 1 when being played, and will not match with the image quality effect preset by itself, which inevitably causes the problems of abrupt change of image quality effect and the like when the subsequent image quality is refreshed and converted, and these display abnormalities will be perceived by the user and affect the viewing experience of the user.
In contrast, in some exemplary implementations, after the controller injects the image configuration data into the GPU, the GPU needs to be controlled to first keep a waiting state, that is, the GPU temporarily does not perform the image refresh operation, and at this time, the image configuration data is not yet validated. The embodiment aims to indicate that when a user stays a focus on a certain video file for longer than a preset time, the video file is more likely to be started to play than other files in the storage device, and referring to the scene likelihood example, the display device cannot actually predict the subsequent behavior of the user, so that the GPU waits first, and is in an observation stage at this time, and determines whether to trigger the image quality configuration data to take effect by observing the behavior operation of the subsequent user.
In some exemplary implementations, if the controller receives an operation that the user starts playing the current target video file, which indicates that the file object captured by the display device in advance is in line with the actual viewing will of the user, the GPU is switched from the waiting state to the refresh state, that is, the GPU immediately triggers the image quality configuration data to take effect, so that the image quality refresh action is performed before the target video file is drawn.
In some exemplary implementations, a timeout time T may be presettimeoutBy comparing the residence times TstayAnd a time-out time TtimeoutAnd whether the problem of starting playing timeout exists in the target video file which is captured in a pre-positioned mode can be measured. If at timeout TtimeoutReceiving the operation of starting playing the target video file by the user, namely, the retention time TstayLess than the time-out time TtimeoutThen, the GPU is switched from the waiting state to the refreshing state; if at timeout TtimeoutThe operation of starting playing the target video file by the user is not received, namely the retention time TstayGreater than or equal to the timeout period TtimeoutThe method includes that a user always does not transfer a focus, but does not start playing a current target video file all the time, and a problem of playing timeout exists, optionally, the GPU is controlled to clear image quality configuration data which are injected, the GPU is enabled to be recovered to an initial state before injection, the image quality configuration data are prevented from occupying GPU resources due to long-time invalidation, follow-up other programs or applications can effectively use corresponding resources of the GPU, and the problem of abnormal display caused by mistakenly triggering the image quality configuration data to take effect when the other programs or applications are started is avoided. Wherein the time-out time TtimeoutThe present invention is not particularly limited, and may be set as appropriate in accordance with the actual circumstances.
In some exemplary implementations, after the focus stays in a certain video file for a preset duration, the user may also shift the focus to make the focus depart from the currently positioned and captured target video file, and then the GPU needs to be controlled to clear the injected image quality configuration data to restore the GPU to the initial state, and the target video file is repositioned and captured according to the focus dynamics, which is equivalent to updating the recorded target video file, thereby avoiding the display abnormality problem caused by the mismatch between the initiated video file and the refreshed image quality parameters. The embodiment ensures that the playing start picture and the picture quality of the video player accord with the configuration of the same video file, and ensures the playing accuracy of the video file.
In some exemplary implementations, referring to the improved local video file playback control logic illustrated in FIG. 8, the difference compared to the conventional logic illustrated in FIG. 6 is that when the storage device accesses the display device, the UI displays the storage device directory, the Player startup process tracks the focus and detects the dwell time T of the focusstayUpon detection of the dwell time TstayReaches the preset time length TpAnd then, acquiring a thumbnail of the target video file where the current focus is located, so as to acquire decoding information carried by the thumbnail, and sending the decoding information to the PQ processing process, so that the PQ processing process finishes loading and injecting image quality configuration data into a GPU before the video player is started according to the received decoding information, and controls the GPU to keep a waiting state. When the Player starting process receives an operation instruction of starting playing of a target video file by a user, the video Player is controlled to start, and meanwhile, an image quality refreshing instruction is sent to the GPU; the GPU responds to the received image quality refreshing instruction, exits from the waiting state, and triggers the image quality configuration data which is injected previously to take effect, so that the image quality refreshing action is executed and completed before the video player is started. When the video Player is started, the Player starts the playing process.
In the improved local video file playing control logic, the PQ processing process mainly includes two types of large links, one is the loading and injection of the image quality configuration Data to the GPU (Load & Send PQ Data to GPU), which is a time-consuming processing link in the PQ processing process, and the other is the triggering of the image quality configuration Data to take effect (PQ take effect). Firstly, an operation instruction input by a user to start playing a target video file is taken as a time sequence node, and the Load & Send PQ Data to GPU and the PQ take effect are separated, so that image quality refreshing action is performed in advance when a video Player is started, the actions are not interspersed during the video Player starting period in logic of FIG. 6, and the integrity and continuity of a Player starting process are ensured. Secondly, based on the improved logic of the application, the Player starting process and the PQ processing process do not need to be synchronized, and the video Player does not need to delay the drawing time of the video picture, thereby ensuring the performance of the video Player. And thirdly, by means of prejudging and positioning capture of the target video file and the thumbnail characteristic, the Load & Send PQ Data to GPU is executed and completed in advance before the video player is started, the PQ take effect can be instantly triggered and completed when the video player is started, and the image quality refreshing action of the video player is completed before the video player draws, so that the problems of display abnormity such as sudden change of image quality effect, screen flashing or screen flashing existing when the local video file in the storage device is played are effectively solved, the playing effect and efficiency of the local video file are improved, and the watching experience of a user is optimized.
It should be noted that, according to the aspects of the requirements of the actual application scenario, the user interaction operation, the characteristics of the file storage in the storage device, and the like, the method logic of the present scheme can be adaptively adjusted, modified, and expanded to adapt to the feasibility of more scenarios, which is not listed in this application. In addition, the UIs provided in the embodiments and the drawings of the present application are merely exemplary, and are subject to practical application and design.
Those skilled in the art will readily appreciate that the techniques of the embodiments of the present invention may be implemented as software plus a required general purpose hardware platform. In a specific implementation, the invention also provides a computer storage medium, which can store a program. When the computer storage medium is located in the display device 200, the program may include the program steps involved in the media file playback control method in the foregoing embodiments when executed. The computer storage medium may be a magnetic disk, an optical disk, a Read-Only Memory (ROM) or a Random Access Memory (RAM).
Finally, it should be noted that: the above embodiments are only used for illustrating the technical solutions of the present application, and not for limiting the same; although the present application has been described in detail with reference to the foregoing embodiments, it should be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present application.
The foregoing description, for purposes of explanation, has been presented in conjunction with specific embodiments. However, the illustrative discussions above are not intended to be exhaustive or to limit the embodiments to the precise forms disclosed above. Many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles and the practical application, to thereby enable others skilled in the art to best utilize the embodiments and various embodiments with various modifications as are suited to the particular use contemplated.
Claims (10)
1. A display device, comprising:
a display for displaying a local media file;
the USB interface is used for externally connecting storage equipment;
a controller configured to perform:
positioning a target video file selected by a user in a storage device directory;
before a user starts playing the target video file, decoding information configured in a thumbnail of the target video file is acquired, and image quality configuration data generated according to the decoding information in a matching mode is injected into a graphic processor;
when receiving an operation that a user starts playing the target video file, firstly controlling a graphic processor to refresh the image quality according to the image quality configuration data, and then controlling a display to display the target video file.
2. The display device of claim 1, wherein the controller is configured to locate the target video file as follows:
after the storage device is accessed, in response to receiving an operation of opening the storage device, controlling a display to display the storage device directory; the storage device directory comprises preview images of various local media files stored in the storage device, wherein the preview images of the video files are thumbnails of one frame of image in the video;
and when the fact that the stay time of the focus of the remote controller on a certain video file reaches a preset duration is detected, recording the video file where the current focus is located as the target video file.
3. The display device according to claim 1 or 2, wherein the controller is further configured to perform:
and after the image quality configuration data is injected into the graphics processor, controlling the graphics processor to keep a waiting state, wherein the waiting state refers to that the graphics processor does not execute the action of refreshing the image quality temporarily.
4. The display device according to claim 3, wherein the controller is further configured to perform:
and if receiving an operation that a user starts playing the target video file, switching the graphics processor from a waiting state to a refreshing state, wherein the refreshing state refers to that the graphics processor triggers the image quality configuration data to take effect so as to execute an action of refreshing the image quality.
5. The display device according to claim 2, wherein the controller is further configured to perform:
and if the operation that the user starts playing the target video file is not received all the time within the overtime, or if the current focus is detected to be separated from the target video file, controlling the image processor to clear the injected image quality configuration data, and enabling the image processor to be recovered to the initial state.
6. A media file playing control method is characterized by comprising the following steps:
positioning a target video file selected by a user in a storage device directory;
before a user starts playing the target video file, decoding information configured in a thumbnail of the target video file is acquired, and image quality configuration data generated according to the decoding information in a matching mode is injected into a graphic processor;
when receiving an operation that a user starts playing the target video file, firstly controlling a graphic processor to refresh the image quality according to the image quality configuration data, and then controlling a display to display the target video file.
7. The method of claim 6, wherein locating the target video file selected by the user in the storage device directory comprises:
after the storage device is accessed, in response to receiving an operation of opening the storage device, controlling a display to display the storage device directory; the storage device directory comprises preview images of various local media files stored in the storage device, wherein the preview images of the video files are thumbnails of one frame of image in the video;
and when the fact that the stay time of the focus of the remote controller on a certain video file reaches a preset duration is detected, recording the video file where the current focus is located as the target video file.
8. The method according to claim 6 or 7, characterized in that the method further comprises:
and after the image quality configuration data is injected into the graphics processor, controlling the graphics processor to keep a waiting state, wherein the waiting state refers to that the graphics processor does not execute the action of refreshing the image quality temporarily.
9. The method of claim 8, further comprising:
and if receiving an operation that a user starts playing the target video file, switching the graphics processor from a waiting state to a refreshing state, wherein the refreshing state refers to that the graphics processor triggers the image quality configuration data to take effect so as to execute an action of refreshing the image quality.
10. The method of claim 7, further comprising:
and if the operation that the user starts playing the target video file is not received all the time within the overtime, or if the current focus is detected to be separated from the target video file, controlling the image processor to clear the injected image quality configuration data, and enabling the image processor to be recovered to the initial state.
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| CN202110959616.1A CN113613047B (en) | 2021-08-20 | 2021-08-20 | Media file playing control method and display device |
| CN202280037926.0A CN117882384A (en) | 2021-08-05 | 2022-06-07 | Display device and sound mode setting method |
| PCT/CN2022/097442 WO2023010993A1 (en) | 2021-08-05 | 2022-06-07 | Display device and sound mode setting method |
| US18/196,814 US20230280971A1 (en) | 2021-08-05 | 2023-05-12 | Display apparatus and method for sound processing |
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Effective date of registration: 20221028 Address after: 83 Intekte Street, Devon, Netherlands Applicant after: VIDAA (Netherlands) International Holdings Ltd. Address before: 266555, No. 218, Bay Road, Qingdao economic and Technological Development Zone, Shandong Applicant before: Hisense Visual Technology Co., Ltd. |