WO2008019606A1

WO2008019606A1 - A method and apparatus for adjusting the quality of video communication of instant messaging

Info

Publication number: WO2008019606A1
Application number: PCT/CN2007/070353
Authority: WO
Inventors: Jing Lv
Original assignee: Tencent Technology (Shenzhen) Company Limited
Priority date: 2006-07-28
Filing date: 2007-07-25
Publication date: 2008-02-21
Also published as: CN101115021A; CN101115021B

Abstract

A method for adjusting the quality of video communication of instant messaging. It includes: getting main frequency of CPU and dividing the frequency of the present terminal into several video levels according to the get main frequency, then determining the elementary frequency and adjusting the video levels through cache and secondary information. The highest frame rate of the terminal is determined through the final video level to make the video quality up to the best in the range of processing ability of CPU, then video image is organized into code streams to transmitted to receiver. Further, the corresponding apparatus is disclosed.

Description

Instant communication video quality adjustment method and device

The present invention relates to data processing technologies in the field of computers and communications, and in particular, to an instant messaging (IM) video quality adjustment method and apparatus. Background of the invention

With the development and popularization of the Internet, IM has gradually become one of the most important applications of the Internet. More and more Internet users regard instant messaging as an important communication tool.

IM video communication is a popular IM application. The existing IM video communication basically does not consider the impact of terminal performance on video communication. For a low-configuration terminal, because its central processing unit (CPU) has poor data processing capability, when it processes IM video communication data, the CPU usage is high, which affects other work of the user, and also makes the connection The success rate is degraded. For a highly configured terminal, when it processes IM video communication data, it does not fully reflect the data processing capability of the CPU, so that the user does not get a good video experience, and also causes waste of resources. Summary of the invention

The embodiment of the invention provides a method for adjusting the quality of instant communication video to rationally utilize resources.

The embodiment of the invention also provides an instant communication video quality adjustment device for rationally utilizing resources.

An instant communication video quality adjustment method provided by an embodiment of the present invention includes: acquiring instantaneous performance communication terminal CPU performance index information, and adjusting an instant communication video quality according to the CPU performance indicator information. An instant communication video quality adjustment apparatus provided by the embodiment of the present invention includes: a performance index acquisition unit, configured to acquire CPU performance index information of the terminal, and send the obtained CPU performance indicator information to a video quality adjustment unit;

The video quality adjustment unit is configured to adjust the instantaneous communication video quality of the terminal according to the received CPU performance indicator information.

In the embodiment of the present invention, by obtaining the performance information of the terminal CPU and adjusting the quality of the instant communication video according to the information, resources can be better utilized to avoid waste of resources. BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 is a schematic diagram of a process for determining a video level according to a terminal capability according to an embodiment of the present invention; FIG. 2 is a schematic diagram of a video quality adjustment apparatus according to an embodiment of the present invention. Mode for carrying out the invention

In the embodiment of the present invention, the video level is adjusted by acquiring information about the performance index of the terminal CPU, thereby adjusting the video quality. The main factors affecting the CPU performance of the terminal include: CPU frequency information, cache (Cache) information, multimedia instruction set supported by the CPU, and other video level auxiliary information. Adjust the video level according to the information, and then determine the highest frame rate of the local encoding according to the obtained video level, and use the highest frame rate to encode the data of the instant communication to obtain the highest limit of the video encoding of the terminal, so that the CPU can Better video data processing to make rational use of resources and avoid waste of resources.

The method of the embodiments of the present invention will be further described in detail below with reference to the accompanying drawings. FIG. 1 is a schematic flowchart of determining a video level according to a terminal capability according to an embodiment of the present invention. As shown in FIG. 1, when the terminal sends a video command to the opposite end or the terminal accepts the video command from the opposite end, or when the video command is initiated by the terminal period in the process of instant communication, immediately The terminal capability information is obtained. This process is a self-test of the performance indicators of the local CPU by the terminal. The terminal level is used to determine the video level. The method includes the following steps:

Step 101: Obtain the CPU frequency information, and initially obtain the video level.

It is first determined whether static detection can be performed before acquiring the main frequency information. Whether static detection is possible is determined by the operating system of this machine. For example: Windows 98 and previous operating systems do not support static detection, but the operating system after Windows 98 supports static detection. If the operating system supports static detection, the CPU's frequency information is written in the registry. In the embodiment of the present invention, the frequency information of the CPU is read from the registry. The CPU's frequency information usually has a fixed location in the registry. The application interface provided by Windows can directly open the registry and determine whether there is relevant information in this location. If there is information, it supports static detection. If no information exists, static detection is not supported.

When static detection is enabled, the CPU's main frequency information is read from the registry. When static detection is not possible, dynamic detection is performed. The built-in CPU instruction can be used to obtain the CPU's main frequency information.

The CPU's main frequency directly reflects the data processing capability of the CPU. Therefore, after acquiring the main frequency information, the video level of the local machine can be divided according to the main frequency information. The division method is as follows: First, the video level is divided into n levels, respectively, S1 Level, S2 level...Sn level, then divide the range of the main frequency value into n segments in descending order, each segment contains several possible main frequency values. Corresponding to the n-level of the video level and the n-segment of the main frequency division, the highest level of the video level corresponds to the main frequency band with the highest frequency value, and so on, and then the detected main frequency of the CPU is used to match the corresponding main frequency band. According to the main frequency band, the corresponding video level is the video level initially obtained by the local machine.

Step 102: Detect the Cache information and adjust the video level.

Cache size is an important indicator of CPU processing power. For example: Detect LI Cache and L2 Cache separately. LI Cache is a cache that is encapsulated inside the CPU, access speed and CPU The main frequency is the same, and its capacity has a greater impact on the performance of the CPU. The larger the capacity, the higher the performance of the CPU. L2 Cache is a cache integrated outside the CPU. The access speed is the same as the CPU frequency or the motherboard frequency. The main function is to store the backup data and instructions. Its capacity has a great impact on the performance of the CPU, because the video The amount of data that needs to be processed is large. If the L2 Cache has a large capacity, the number of data access exchanges can be reduced, and the video processing speed can be optimized.

In the embodiment of the present invention, the capacity of the LI Cache and the L2 Cache is detected by a built-in CPU instruction, and the video level of the local device is adjusted according to their capacity. Take L2 Cache as an example to illustrate the adjustment method as follows:

First, the L2 Cache is divided into n levels according to capacity. Each level corresponds to a video level correction value (this correction range is from -X to +Y, X and Y are positive numbers), and then the detected L2 Cache capacity is used. Match the corresponding level and read the correction value to adjust the video level.

The size of the LI Cache is the same as the video level adjustment method and L2 Cache. Therefore, the larger the capacity of LI Cache and L2 Cache, the higher the video level of this unit.

However, for some CPUs whose detection results may be inaccurate (typically the CPU for notebooks), Cache is only used as a post-fix. If the Cache failure is detected by the built-in CPU detection command, the level determined by the original frequency is taken as the standard.

Step 103: Detect other video level auxiliary information and adjust the video level. Other video level auxiliary information mainly includes:

(1) Whether dual core: Because the actual performance of the processor is the total number of instructions that the processor can process in each clock cycle, theoretically, adding a core, the number of units that can be executed in each clock cycle of the processor It will double, so the performance of dual-core CPU is much higher than that of single core. The built-in CPU command detects if the terminal is dual-core. For dual-core hosts, the video level will increase. The adjustment method is as follows:

Set the level correction value to Z. If it detects that the terminal is dual-core, read the correction value Z to adjust the view. At the frequency level, if the terminal is detected as a single core, the video level is not adjusted.

(2) Whether the multimedia instruction set is supported: MMX, SSE, SSE2 and 3DNow! are all extended instruction sets of the CPU. Supporting the instruction set is an important basis for reflecting the multimedia processing capability of the terminal. The built-in CPU command detects whether the terminal supports the multimedia instruction set. If it is supported, the video level is higher. This adjustment method is consistent with the above-mentioned dual-core adjustment method.

(3) Whether Hyper-Threading Technology (HTT) is supported: Hyper-Threading Technology can reduce CPU idle time and improve CPU operating efficiency. The built-in CPU command detects whether the terminal supports Hyper-Threading Technology. For hosts that support Hyper-Threading Technology, the video level will be improved. This adjustment method is consistent with the above-mentioned dual-core adjustment method.

Step 104: After obtaining the local video level, determine the highest frame rate of the local encoding, and encode the video data of the instant communication by the highest frame rate, as follows:

First, the terminal frame rate is divided into n levels, and each level of frame rate corresponds to a video level, which is from large to small - corresponding, and then the highest frame rate is obtained by adjusting the final obtained video level corresponding to the corresponding frame rate level. , in turn, to obtain the highest limit of terminal video coding.

Obtain the maximum limit of the terminal video coding before starting the video call, ensure that the resources are occupied within the processing capability of the local machine, the video quality is optimal, and then enter the video transmission process.

The video quality adjustment method of the embodiment of the present invention can greatly reduce the resource occupancy rate of the terminal with low configuration, does not affect other work of the user, and can also improve the success rate of connection establishment; and for the highly configured terminal, The video level is improved accordingly, which enables users to get a better video experience and avoid waste of resources.

As shown in FIG. 2, the present invention also provides an instant communication video quality adjustment apparatus having the above functions, which is applied to a terminal for performing instant communication. The video quality adjustment device mainly includes two parts: a performance index acquisition unit 21 and a video quality adjustment unit 22. The performance indicator obtaining unit 21 is configured to acquire CPU performance indicator information of the terminal, and obtain the The CPU performance indicator information is sent to the video quality adjustment unit. The video quality adjustment unit 22 is configured to adjust the video quality of the terminal according to the received CPU performance indicator information.

The video quality adjustment unit 22 may further include a video level adjustment module 31 and a video quality adjustment module 32. The video level adjustment module 31 is configured to adjust a video level of the terminal according to the CPU performance indicator information, and output the video level to the video quality adjustment module 32. The video quality adjustment module 32 is configured to determine the highest code according to the video level. Frame rate, and output the highest frame rate to the terminal.

After the application of the embodiment of the present invention, the method for obtaining the performance index information of the terminal CPU and adjusting the quality of the instant communication video according to the information can better utilize resources, avoid waste of resources, and improve the success rate of connection establishment. To improve the user's video experience. It is within the spirit and scope of the invention. Thus, it is intended that the present invention cover the modifications and modifications of the invention

Claims

Claim

An instant communication video quality adjustment method, the method is: obtaining terminal CPU performance indicator information, and adjusting an instant communication video quality according to the CPU performance indicator information.

2. The instant messaging video quality adjustment method according to claim 1, wherein the step of adjusting the quality of the instant communication video comprises:

A. obtaining the video level of the local device according to the CPU performance indicator information;

B. Determine the highest frame rate of the native encoding according to the video level, and encode the video data for instant communication according to the highest frame rate.

The method for adjusting an instant communication video quality according to claim 1, wherein the step of adjusting the quality of the instant communication video is performed when the terminal sends a video command to the opposite end or the terminal accepts the video command from the opposite end. of.

The instant messaging video quality adjustment method according to claim 1, wherein the terminal CPU performance indicator information comprises CPU frequency information and/or cache capacity information.

The instant messaging video quality adjustment method according to claim 2, wherein the terminal CPU performance indicator information includes CPU frequency information and cache capacity information, and step A includes:

Al, obtain the local CPU frequency information, and determine the initial video level of the local machine according to the corresponding relationship between the acquired CPU frequency information and the video level;

A2: The local cache capacity information is detected, and the initial video level is corrected according to the detected cache capacity information.

The method for adjusting the quality of the instant communication video according to claim 5, wherein the correspondence between the CPU frequency information and the video level comprises:

The higher the CPU clock speed, the higher the video level; The correcting the initial video level according to the detected cache capacity information includes: if the detected buffer capacity is larger, the initial video level is adjusted upwards, so that the final obtained video level is higher.

The instant communication video quality adjustment method according to claim 5, wherein in step A1, the terminal reads the CPU frequency information from the registry, or uses the built-in CPU instruction to detect the CPU frequency. Information

In step A2, the terminal acquires the cache capacity information by using built-in CPU command detection.

The method for adjusting the quality of the instant communication video quality according to claim 5, wherein the CPU performance indicator information further includes video level auxiliary information, and the video level auxiliary information includes: determining whether it is a dual-core CPU, whether to support multimedia The instruction set and whether to support any combination of one or more of the Hyper-Threading techniques;

After step A2, further comprising:

A3. The video level auxiliary information is obtained by the built-in CPU instruction detection, and the corrected video level in step A2 is adjusted according to the video level auxiliary information. When the CPU supports the video level auxiliary information, the video level is adjusted upward. .

9. An instant communication video quality adjustment device for use in a terminal for performing instant communication, characterized in that the device comprises:

The performance indicator obtaining unit is configured to obtain CPU performance indicator information of the terminal, and send the obtained CPU performance indicator information to the video quality adjustment unit;

The instant communication video quality adjustment apparatus according to claim 9, wherein the video quality adjustment unit comprises:

a video level adjustment module, configured to adjust a video level of the terminal according to the CPU performance indicator information, and output the video level to the video quality adjustment module; The video quality adjustment module is configured to determine a highest frame rate of the encoding according to the video level, and output the highest frame rate to the terminal.