CN108989680B - Camera shooting process starting method, computer device and computer readable storage medium - Google Patents

Camera shooting process starting method, computer device and computer readable storage medium Download PDF

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Publication number
CN108989680B
CN108989680B CN201810877122.7A CN201810877122A CN108989680B CN 108989680 B CN108989680 B CN 108989680B CN 201810877122 A CN201810877122 A CN 201810877122A CN 108989680 B CN108989680 B CN 108989680B
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application process
camera shooting
shooting application
simplified
complete
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CN108989680A (en
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李培锋
吴书耕
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Allwinner Technology Co Ltd
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Allwinner Technology Co Ltd
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    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04NPICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N23/00Cameras or camera modules comprising electronic image sensors; Control thereof
    • H04N23/60Control of cameras or camera modules
    • GPHYSICS
    • G06COMPUTING; CALCULATING OR COUNTING
    • G06FELECTRIC DIGITAL DATA PROCESSING
    • G06F9/00Arrangements for program control, e.g. control units
    • G06F9/06Arrangements for program control, e.g. control units using stored programs, i.e. using an internal store of processing equipment to receive or retain programs
    • G06F9/44Arrangements for executing specific programs
    • G06F9/445Program loading or initiating
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04NPICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N23/00Cameras or camera modules comprising electronic image sensors; Control thereof
    • H04N23/60Control of cameras or camera modules
    • H04N23/64Computer-aided capture of images, e.g. transfer from script file into camera, check of taken image quality, advice or proposal for image composition or decision on when to take image

Abstract

The invention discloses a camera shooting process starting method, a computer device and a computer readable storage medium, wherein the method comprises the steps of starting a kernel file of an operating system, and running a simplified camera shooting application process, wherein the simplified camera shooting application process is used for acquiring an image shot by a camera shooting device and displaying the acquired image on a display screen; loading a file system of an operating system, setting a running environment of a complete camera shooting application process after initializing an application layer tool of the operating system, and running the complete camera shooting application process, wherein the complete camera shooting application process is used for acquiring an image shot by a camera shooting device and displaying the acquired image on a display screen and is also used for executing at least one of the following steps: setting resolution, taking a picture and receiving a touch instruction. The invention also provides a computer device and a computer readable storage medium for realizing the method. The invention can reduce the time from the power-on of the electronic equipment to the image display of the display screen, thereby reducing the waiting time of a user.

Description

Camera shooting process starting method, computer device and computer readable storage medium
Technical Field
The present invention relates to the field of image processing of computers, and in particular, to a method for starting a camera process, a computer device for implementing the method, and a computer-readable storage medium.
Background
Most of the existing electronic equipment has a camera shooting function, for example, the common electronic equipment such as a smart phone and a tablet personal computer has a camera shooting device, and functions such as shooting and recording can be realized. For light-weight electronic devices such as motion DV and mainly having a camera function, a user has a very strict requirement on the time from power-on start to video recording and image display of the electronic device. Generally, a user wants to enable an electronic device to record and display images on a display screen within an extreme time after the electronic device is powered on and started.
Because most of current DV equipment is implemented based on the L inux operating system, after the electronic equipment is powered on and started, the kernel file of the operating system needs to be started first, and after a series of operations such as loading a file system, the camera shooting application process can be run.
As shown in fig. 1, after the electronic device is powered on and started, it takes T1 to start the kernel file of the operating system first, and after the kernel file is started, it takes T2 to load the file system of the operating system. Then, it takes T3 time to initialize an application layer tool, such as a busy box. Next, it takes T4 time to load a hardware driver file, for example, a driver file of an image pickup device, a driver file of a touch panel, or the like. Then, the time taken to set the execution environment MPP of the image pickup application process is T5. After the setting and loading, the camera shooting application process can be run, and therefore, before the camera shooting application process is driven to run, a lot of time is needed, and the time is often needed to be 5 seconds or even longer, so that a user needs to wait for a long time to start recording a video, and the use of the user is affected.
Because hardware devices such as a camera device and a touch screen need to be used for running the camera application process, and the existing camera application process needs to use various virtual keys, that is, an operating environment needs to be configured first, that is, a hardware driver file needs to be loaded first, the operating environment needs to be set, and the like, the time for loading the hardware driver file and setting the operating environment cannot be saved before the existing electronic device runs the camera application process, and therefore, an image cannot be displayed on a display screen in a short time.
The existing electronic equipment adopts the scheme, although the file setting of the operating system is simple, the kernel file and the camera shooting application process of the operating system can be realized by adopting the existing mature file, and the scheme with the lowest cost is adopted for the electronic equipment developer. However, this solution has the disadvantage that the time from the start of powering up the electronic device to the start of recording the video is long, and the user needs to wait for a long time before being able to see the display screen image on the display screen.
Disclosure of Invention
The invention mainly aims to provide a shooting process starting method for quickly running a shooting application process after electronic equipment is powered on.
Another object of the present invention is to provide a computer apparatus capable of implementing the above method for starting an image capturing process.
Still another object of the present invention is to provide a computer-readable storage medium capable of implementing the above-mentioned method for starting a camera process.
In order to achieve the main purpose, the camera shooting process starting method provided by the invention comprises the steps of starting a kernel file of an operating system, and running a simplified camera shooting application process, wherein the simplified camera shooting application process is used for acquiring an image shot by a camera shooting device and displaying the acquired image on a display screen; loading a file system of an operating system, setting a running environment of a complete camera shooting application process after initializing an application layer tool of the operating system, and running the complete camera shooting application process, wherein the complete camera shooting application process is used for acquiring an image shot by a camera shooting device and displaying the acquired image on a display screen and is also used for executing at least one of the following steps: setting resolution, taking a picture and receiving a touch instruction.
According to the scheme, after the electronic equipment is powered on, the kernel file of the operating system is started at first, and the simplified camera application process is run immediately. The simplified camera application process only needs to realize simple functions, such as acquiring images shot by the camera device and displaying the acquired images on the display screen, so that only simple drive files need to be loaded without initializing application layer tools, loading all the drive files, setting running environments and the like, the camera device can be started in a short time and the acquired images are displayed on the display screen, and long-time waiting of a user after the electronic equipment is powered on is avoided.
And after the file system is loaded and the application layer tool is initialized, the complete camera shooting application process is operated, so that functions such as setting resolution, shooting pictures and receiving touch instructions are realized, and the use of a user is not influenced.
Preferably, before the running of the compact camera application process, the following steps are also executed: and loading a drive file of hardware used by the compact camera application process.
Therefore, before the compact camera application process is run, only the necessary drive files need to be loaded, such as the drive file of the camera device and the display drive file of the display screen, and the like, but all the drive files do not need to be loaded, so that the waiting time of a user is reduced.
The further scheme is that after the running environment of the whole camera shooting application process is set, before the whole camera shooting application process is run, the following steps are executed: and loading the residual drive files of the hardware used by the complete camera application process.
Therefore, before the complete camera shooting application process is operated, the remaining drive files of the complete camera shooting application process also need to be loaded, for example, the complete camera shooting application process needs to use the function of a touch screen, and then the drive files of the touch screen need to be loaded, so that the complete camera shooting application process can realize all functions.
According to a further scheme, after the complete camera shooting application process is operated, a closing instruction is sent to the simplified camera shooting application process, and the simplified camera shooting application process quits the operation after receiving the closing instruction.
Therefore, after the complete camera shooting application process is started to operate, the simplified camera shooting application process needs to be closed, so that the simplified camera shooting application process and the complete camera shooting application process cannot operate simultaneously, and a large amount of memory data is prevented from being occupied.
A further scheme is that before the complete camera shooting application process sends a closing instruction to the compact camera shooting application process, the compact camera shooting application process is determined to be currently running.
Therefore, in order to avoid the complete camera shooting application process from issuing an instruction mistakenly, it is necessary to confirm that the compact camera shooting application process is running before issuing a closing instruction, and also avoid that the complete camera shooting application process spends unnecessary time sending the closing instruction.
According to a further scheme, after receiving the closing instruction and before exiting the operation, the simplified camera shooting application process sends closing feedback information to the complete camera shooting application process.
Therefore, before the simplified camera shooting application process quits operation, closing feedback information is sent to the complete camera shooting application process, so that the complete camera shooting application process is ensured to know that the simplified camera shooting application process is closed and quitted, and normal operation of the complete camera shooting application process is ensured.
In a further aspect, the streamlined camera application process is run while the memory file system is running when the kernel file is started.
Therefore, when the kernel file of the operating system is started, the simplified camera shooting application process is operated in the time period of operating the memory file system, and the simplified camera shooting application process can be started and operated in extreme time.
In order to achieve the above another object, the present invention further provides a computer device including a processor and a memory, wherein the memory stores a computer program, and the computer program realizes the steps of the above image capturing process starting method when executed by the processor.
In order to achieve the above-mentioned further object, the present invention further provides a computer-readable storage medium having a computer program stored thereon, where the computer program is executed by a processor to implement the steps of the above-mentioned image capturing process starting method.
Drawings
Fig. 1 is a time chart of a conventional image pickup application process.
Fig. 2 is a flowchart of an embodiment of a method for starting an image capturing process according to the present invention.
Fig. 3 is a time-course diagram of an embodiment of a method for starting a camera process according to the present invention.
Fig. 4 is a time-course diagram when a kernel file of an operating system is started in the embodiment of the image pickup process starting method of the present invention.
The invention is further explained with reference to the drawings and the embodiments.
Detailed Description
The computer device of the present invention may be the electronic device described above, and the computer readable storage medium may be various storage media having a data storage function, including but not limited to non-volatile memories such as F L ASH, EEPROM, and the like.
The embodiment of the starting method of the camera shooting process comprises the following steps:
the terminal device to which the method for starting the camera shooting process of the embodiment is applied runs an operating system, such as L inux operating system, of course, the invention is not limited to the electronic device running L inux operating system, and can also be applied to the electronic device running an android operating system or other operating systems.
Referring to fig. 2, after the electronic device is powered on, step S1 is first executed to start a Kernel file of the operating system, for example, a file for running L inux Kernel, which is a file that the L inux operating system must run when starting the runtime.
Preferably, when the kernel file of the operating system is started, the memory file system of the operating system needs to be started, for example, the RAMFS system is started, and when the memory file system is executed, the compact camera application process is executed. Generally, the operating system of the electronic device is fixed on the circuit board in the form of firmware, for example, the kernel file is a fixed program, which is generally called firmware.
In this embodiment, since the compact camera application process needs to be started and run in the process of starting and running the kernel file of the operating system, the code of the compact camera application process may be integrated into the kernel file of the operating system, that is, the code of the compact camera application process is solidified in the kernel file in the form of firmware.
The condensed camera application process may implement the basic camera function, but may not implement the full camera function. For example, electronic devices such as motion DV and a vehicle event data recorder that use a camera function as a main function often have relatively powerful functions, for example, video recording, photographing, and image resolution adjustment can be achieved.
Therefore, the conventional image capturing application process of the electronic device needs to implement all image capturing related functions, and needs to load a large amount of driver files, for example, when an image capturing device, such as a CCD sensor, is required to be used during image capturing, the driver files of the image capturing device need to be loaded. For another example, when the touch screen receives a touch instruction of a user, a driver file of the touch screen needs to be loaded. However, as the functions implemented by the electronic device increase, the number of driver files that need to be loaded is also large, resulting in the inability to display a captured image at any time after the electronic device is powered on.
In this embodiment, the compact camera application process only needs to implement a necessary camera function, for example, only implements a video recording function, that is, drives the camera to work, obtains an image captured by the camera, and displays the image captured by the camera on the display screen. If the simplified camera application process only realizes the video recording function, the driver files needing to be loaded are few, for example, only the driver files of the camera device need to be loaded, and at the moment, a large number of driver files do not need to be loaded, so that the time for executing the video recording after the electronic equipment is powered on can be shortened.
Optionally, the compact camera application process may further implement one or more simple functions, for example, implement YUV color rotation or ISP optimization, and implement these functions without loading a driver file of hardware, and also implement a function of recording video on the electronic device in a short time. Therefore, in step S2, immediately after the kernel file for running the operating system is started, the driver file of the hardware required by the compact camera application process, for example, the driver file required by the camera device is loaded, and then the compact camera application process is run.
Generally, a kernel file of an operating system is started and a driver file of an image pickup device is loaded, which often only needs 1 to 2 seconds, that is, after an electronic device is powered on, a user only needs to wait for about 1 to 2 seconds to see an image shot by the image pickup device displayed on a display screen.
After the compact camera application process is started, the compact camera application process continuously acquires images shot by the camera device and displays the acquired images on the display screen. In this way, the user will continue to see the images taken by the camera through the display screen. However, since the compact camera application process does not implement functions such as image resolution adjustment and a touch screen, a user cannot adjust the resolution of an image captured by the camera device or use the touch screen function of the touch screen during a time period in which the compact camera application process is running.
Then, step S3 is executed to load the file system of the operating system, for example, load the mount rootfs system, and then initialize the application layer tool of the operating system, for example, initialize the busy box. The file system of the operating system and the initialized application layer tool are loaded for subsequently setting the running environment of the complete camera shooting application process.
Next, step S4 is executed, a running environment in which the full camera application process runs is set, and the remaining driver file of the full camera application process is loaded. Because the touch screen is needed to be used when the complete camera application process runs, and a plurality of graphical interfaces, namely UI interfaces, are displayed on the touch screen, before the complete camera application process runs, a running environment needs to be set, for example, the UI interfaces are configured, and controls needed by various virtual keys are called.
In addition, since the complete camera application process needs to implement multiple functions, for example, the function of a touch screen, a driver file of the touch screen needs to be loaded so that the touch screen receives a click and slide instruction of a user. In addition, if the electronic device also has a recording and voice control function, driver files of hardware devices such as a speaker and a microphone need to be loaded. Therefore, in step S4, driver files of hardware such as touch screen, speaker, microphone, etc. also need to be loaded. It should be noted that, since the driver file of the hardware used by the compact camera application process, for example, the driver file of the image pickup apparatus, has already been loaded in step S2, the driver file of the image pickup apparatus does not need to be loaded in step S4, but the driver file of the hardware not loaded in step S2, that is, the driver file of the hardware not loaded by the compact camera application process, is loaded.
After preparing the preparation file for the full camera application process to run, i.e., executing step S3 and step S4, the electronic device may run the full camera application process, i.e., execute step S5. In this embodiment, the functions that can be realized by the full camera application process are often relatively powerful, and besides all the functions that can be realized by the simplified camera application process, that is, the functions of video recording, YUV rotation, ISP optimization, and the like, the functions such as photographing, image resolution adjustment, and the like can be realized.
However, since the full camera application process can implement all functions of the compact camera application process, that is, an image acquired by the camera device can be acquired and displayed on the display screen, if the compact camera application process and the full camera application process run simultaneously, the memory usage of the electronic device is too large and repeated work is performed, and therefore, the compact camera application process needs to be closed while the full camera application process is started.
Therefore, immediately after the full camera application process is started, step S6 is executed to determine whether the compact camera application process is currently running, for example, to obtain a process list currently running, and determine whether the compact camera application process is currently running. If the compact camera application process is running, the complete camera application process sends a close instruction to the compact camera application process, that is, step S7 is executed to request the compact camera application process to exit from running. When the compact camera application process receives the close instruction, step S8 is executed to send close feedback information to the full camera application process, which indicates that the compact camera application process receives the close instruction and is about to exit from operation.
And when the simplified camera shooting application process sends the closing feedback information, closing and quitting the operation, wherein at the moment, the electronic equipment executes the video recording operation by the complete camera shooting application process, namely executing all the operations of the simplified camera shooting application process. Because the time from the exit of the compact camera application process to the running of the complete camera application process is very short, the work of the camera device is not influenced, and a user hardly feels the switching between the compact camera application process and the complete camera application process.
The operation of the electronic device will be described with reference to fig. 3 and the time chart of fig. 4. First, after the electronic device is powered on, it takes T11 to start the os kernel file. Referring to fig. 4, the process of starting the kernel file of the operating system includes loading the memory file system, which takes T21, and during the process of loading the memory file system, it is also necessary to load a driver file of hardware required by the compact camera application process, for example, a driver file of the camera device, which takes T22. After loading the hardware driver files required by the compact camera application process, the running of the compact camera application process may be started, and the time taken is T23.
Generally, the time required for loading the memory file system, loading the driver file of the hardware required by the compact camera application process, and starting the compact camera application process, that is, the sum of T21, T22, and T23 is 1 second to 2 seconds, that is, after the user powers on the electronic device, the user only needs to wait 1 to 2 seconds to perform the video recording operation, and can view the image acquired by the camera device on the display screen.
After the compact camera application process is started, the electronic device needs to load the file system of the operating system, which takes T12, and then initializes the application layer tool, which takes T13. Then, the electronic apparatus sets the execution environment of the full camera application process, taking time to be T14, and loads the driver file of the remaining hardware required for the full camera application process to be executed, taking time to be T15.
The full camera application process may be started after the driver files of the remaining hardware required for the full camera application process to run are loaded, the time for starting the full camera application process is T16, and the full camera application process may be applied after the user waits for a time from T11 to T16. For example, the time from the power-on of the electronic device to the start-up of the full camera application process is approximately 5 seconds to 6 seconds.
It should be noted that after the compact camera application process is started, until the full camera application process is started, the compact camera application process is continuously operated, that is, after the compact camera application process is started, the user can perform the video recording operation and see the image shot by the camera on the display screen. Therefore, after the electronic equipment is powered on, the time for the user to wait for the display screen to display the image is greatly shortened, and the requirement that the user hopes the electronic equipment to start the video recording operation as soon as possible is met.
Because the simplified camera shooting application process only realizes simple functions such as video recording and the like and does not realize functions such as operation of a touch screen and the like, the running environment of the simplified camera shooting application process does not need to be set, namely, the step of loading the running environment of the camera shooting application process can be omitted before the simplified camera shooting application process is run, and the starting running time of the simplified camera shooting application process is accelerated. In addition, because the running environment of the compact camera application process does not need to be set, a file system and an application layer initialization tool do not need to be loaded before the compact camera application process is started, so that the starting time of the compact camera application process is further shortened, and the waiting time of a user is greatly reduced.
The embodiment of the computer device comprises:
the computer device of the embodiment includes a processor, a memory, and a computer program stored in the memory and executable on the processor, such as an information processing program for implementing the information processing method. The processor realizes the steps of the image pickup process starting method when executing the computer program.
For example, a computer program may be partitioned into one or more modules that are stored in a memory and executed by a processor to implement the modules of the present invention. One or more of the modules may be a series of computer program instruction segments capable of performing certain functions, which are used to describe the execution of the computer program in the terminal device.
It should be noted that the terminal device may be a desktop computer, a notebook, a palm computer, a cloud server, or other computing devices. The terminal device may include, but is not limited to, a processor, a memory. It will be understood by those skilled in the art that the schematic diagram of the present invention is merely an example of a terminal device, and does not constitute a limitation of the terminal device, and may include more or less components than those shown, or combine some components, or different components, for example, the terminal device may further include an input-output device, a network access device, a bus, etc.
The Processor may be a Central Processing Unit (CPU), or may be other general-purpose Processor, a Digital Signal Processor (DSP), an Application Specific Integrated Circuit (ASIC), an off-the-shelf Programmable Gate Array (FPGA) or other Programmable logic device, a discrete Gate or transistor logic device, a discrete hardware component, or the like. The general-purpose processor may be a microprocessor or the processor may be any conventional processor or the like, the processor being the control center of the terminal device and connecting the various parts of the entire terminal device using various interfaces and lines.
The memory may be used to store computer programs and/or modules, and the processor may implement various functions of the terminal device by running or executing the computer programs and/or modules stored in the memory and invoking data stored in the memory. The memory may mainly include a storage program area and a storage data area, wherein the storage program area may store an operating system, an application program required by at least one function (such as a sound playing function, an image playing function, etc.), and the like; the storage data area may store data (such as audio data, a phonebook, etc.) created according to the use of the cellular phone, and the like. In addition, the memory may include high speed random access memory, and may also include non-volatile memory, such as a hard disk, a memory, a plug-in hard disk, a Smart Media Card (SMC), a Secure Digital (SD) Card, a Flash memory Card (Flash Card), at least one magnetic disk storage device, a Flash memory device, or other volatile solid state storage device.
A computer-readable storage medium:
the module integrated with the terminal device may be stored in a computer-readable storage medium if it is implemented in the form of a software functional unit and sold or used as a separate product. Based on such understanding, all or part of the flow in the method according to the above embodiments may be implemented by a computer program, which may be stored in a computer readable storage medium and used by a processor to implement the steps of the method for starting the respective image capturing processes.
Wherein the computer program comprises computer program code, which may be in the form of source code, object code, an executable file or some intermediate form, etc. The computer readable medium may include: any entity or device capable of carrying computer program code, recording medium, U.S. disk, removable hard disk, magnetic disk, optical disk, computer Memory, Read-Only Memory (ROM), Random Access Memory (RAM), electrical carrier wave signals, telecommunications signals, software distribution media, and the like. It should be noted that the computer readable medium may contain other components which may be suitably increased or decreased as required by legislation and patent practice in jurisdictions, for example, in some jurisdictions, in accordance with legislation and patent practice, the computer readable medium does not include electrical carrier signals and telecommunications signals.
Of course, the above-mentioned solution is only a preferred embodiment of the present invention, and the practical application may also have more changes, for example, a change of a specific function implemented by the compact camera application process, or a change of a specific function implemented by the full camera application process, or a change of a hardware driver that is loaded, which do not affect the implementation of the present invention, and should also be included in the protection scope of the present invention.

Claims (9)

1. The method for starting the shooting process is characterized by comprising the following steps:
starting a kernel file of an operating system, and running a simplified camera shooting application process, wherein the simplified camera shooting application process is used for acquiring an image shot by a camera shooting device and displaying the acquired image on a display screen, and a code of the simplified camera shooting application process is a firmware;
loading a file system of an operating system, setting a running environment of a complete camera shooting application process after initializing an application layer tool of the operating system, and running the complete camera shooting application process, wherein the complete camera shooting application process is used for acquiring an image shot by a camera shooting device and displaying the acquired image on a display screen, and is also used for executing at least one of the following steps: setting resolution, taking a picture and receiving a touch instruction.
2. The image capturing process starting method according to claim 1, characterized in that:
before the simplified camera shooting application process is operated, the following steps are also executed: and loading a drive file of hardware used by the simplified camera shooting application process.
3. The image capturing process starting method according to claim 2, characterized in that:
after the running environment of the complete camera shooting application process is set, before the complete camera shooting application process is run, the following steps are executed: and loading the residual drive files of the hardware used by the complete camera shooting application process.
4. A method for starting an image capturing process according to any one of claims 1 to 3, characterized in that:
and after the complete camera shooting application process runs, sending a closing instruction to the simplified camera shooting application process, and after receiving the closing instruction, the simplified camera shooting application process quits running.
5. The image capturing process starting method according to claim 4, characterized in that:
and before the complete camera shooting application process sends a closing instruction to the simplified camera shooting application process, determining that the simplified camera shooting application process is currently running.
6. The image capturing process starting method according to claim 4, characterized in that:
and after receiving the closing instruction and before exiting the operation, the simplified camera shooting application process sends closing feedback information to the complete camera shooting application process.
7. A method for starting an image capturing process according to any one of claims 1 to 3, characterized in that:
and when the kernel file is started, the simplified camera shooting application process is operated when the memory file system is operated.
8. Computer arrangement, characterized in that it comprises a processor and a memory, said memory storing a computer program which, when executed by the processor, carries out the steps of the camera process activation method according to any one of claims 1 to 7.
9. A computer-readable storage medium having stored thereon a computer program, characterized in that: the computer program, when being executed by a processor, carries out the steps of the camera process startup method according to any one of claims 1 to 7.
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