WO2021004343A1 - Switching analysis method for signal source - Google Patents

Abstract

The present invention relates to the technical field of signal processing, and particularly relates to a switching analysis method for a signal source. A hardware interface and a hardware driver are provided, and the hardware driver starts the hardware interface. The switching analysis method specifically comprises: step S1, providing at least one signal source interface, and starting the signal source interface by the hardware driver; step S2, adding a printing mark to the signal source interface; step S3, switching the signal source interface, and generating, recording, and saving the debugging and printing report of the signal source interface; and step S4, exporting the debugging and printing report, and parsing the debugging and printing report to collect statistics about the average value output result of each stage of data. The technical solution of the present invention has the following beneficial effects: automatically collecting statistics about the interface switching data of the signal source interface, being capable of fast and accurately providing the signal source interface switching data, and greatly improving the efficiency of data statistics, thereby improving research and development efficiency.

Description

A signal source switching analysis method Technical field

The present invention relates to the technical field of signal processing, in particular to a switching analysis method of a signal source.

Background technique

In the prior art, TVs usually support the input of multiple signal source interfaces, such as ATV (analog TV signal), DTV (digital TV signal), HDMI (audio image signal), AV (analog video signal), etc. When using a TV, users often connect multiple input devices, such as connecting ATV signal lines to watch analog TV, connecting to PS4 to play games, and connecting to DVDs to watch movies.

When the user finishes watching the analog TV and wants to play a PS4 game, he needs to switch the ATV signal source interface to the HDMI signal source interface on the TV. At this time, if the speed of switching to the HDMI signal source interface is very slow, the user experience will be poor, and the performance of this TV will be considered poor.

Therefore, the switching performance of the signal source interface is also an important indicator of TV research and development. The code logic of signal source interface switching is a very complicated process. Taking the TV with logic chip as an example, the switching process from the ATV signal source interface to the HDMI signal source interface is shown in Figure 1. From Figure 1, we can see that this process is relatively long, and involves the java layer, c++ layer, and driver layer. , And even the hardware level, and the R&D personnel involved are at least four people (usually one person is responsible for one module). If we want to optimize the switching speed of the signal source interface, we need to figure out which module needs to be optimized, and even which piece of code needs to be optimized.

At present, everyone counts the time consumed by each segment by printing, and then counts each data into a table to calculate the time consumed by a certain process. Take the partial debugging and printing of the HDMI1 signal source interface switching from the ATV signal source interface as an example. From pressing the button of the HDMI1 signal source interface to the java layer TV service starting HDMI playback, it takes a total of time, for example, 0.436 seconds (109.025s minus Go to 108.589s and get 0.436s). It's just a small part of the process of switching between the ATV signal source interface and the HDMI1 signal source interface. It is not a complete process of printing. We have already seen that there are 7 data, and we need these data minus the initial playback time 108.589s to get the intuitive The process consumes time.

Even scary is that, taking a TV that supports 1 ATV signal source interface, 1 DTV signal source interface, 3 HDMI signal source interfaces, and 1 AV signal source interface as an example, there are a total of 12 signal source interface channel switching combinations. . And, for the accuracy of the data, we usually have to test 5 times, and then take the average value to get the final signal source interface switching performance result. Therefore, a complete test needs to switch the signal source interface channel at least 60 times, and then count and print the data thousands of times. If you want to know which code segments the signal source interface switching time consumes, or want to know whether a code change optimizes the signal source interface switching performance, and whether there are side effects. If you use the previous manual statistics, debugging and printing methods, a complete data statistics may take an engineer about 1 week. This is a great test for human resources arrangements, and at the same time, research and development related to the performance of signal source interfaces will progress very slowly.

Summary of the invention

In view of the above-mentioned problems in the prior art, a signal source switching analysis method is now provided.

The specific technical solutions are as follows:

A signal source switching analysis method, wherein a hardware interface and a hardware driver are provided, the hardware driver starts the hardware interface, and the switching analysis method specifically includes:

Step S1: Provide at least one signal source interface, and the hardware driver activates the signal source interface;

Step S2: Add a print mark to the signal source interface;

Step S3: Switch the signal source interface, generate, record and save the debugging print report of the signal source interface;

Step S4: Export the debugging print report, and analyze the debugging print report to count the average value of the data at each stage and output the result.

Preferably, in the step S2, the print mark includes the currently switched signal source interface and/or the current sub-stage executed by the signal source interface and/or the current execution time of the sub-stage.

Preferably, in the step S4, the debugging print report is exported in the form of text;

The average value of each stage data is statistically output in the form of a table.

Preferably, in the step S4, an analysis tool is used to analyze the debugging print report.

Preferably, the analysis tool is written in shell and/or phython and/or java and/or c++ language to analyze the debugging print report.

Preferably, in the step S4, the specific steps of parsing the debugging print report include:

Step 40: Scan the debugging print report in a bottom-up order;

Step S41: Determine whether it is the first scan of the print mark of the currently switched signal source interface;

If yes, go to step S42;

If not, continue scanning;

Step S42: Create a new data data array, in which data of each stage of each data element of the signal source interface currently switched will be saved;

Create a new variable array, and record the number of operations of each variable element of the signal source interface currently switched in the variable array, and each scan is performed, the data element corresponds to the variable element one-to-one.

Preferably, in the step S40, when the print marks of the current sub-stage executed by the signal source interface and the execution time of the current sub-stage are scanned, they will correspond to the current sub-stage executed by the signal source interface. The data of and the data corresponding to the execution time of the current sub-phase are stored in the data data array according to the scanning order.

Preferably, after the step S42, the method further includes:

Step S43: Determine whether it is the second scan of the print mark of the currently switched signal source interface;

If yes, go to step S44;

If not, continue scanning;

Step S44: Determine whether the currently switched signal source interface is the same type of signal source interface switching operation;

If yes, go to step 45;

If not, return to the step S41;

Step 45: Add one to the number of operations of the variable array, and respectively update the data corresponding to the current sub-stage executed by the signal source interface and the data corresponding to the current execution time of the sub-stage into the data data array ；

Step S46: It is judged whether the scanning of the debugging print report is finished;

If yes, go to step S47;

If not, return to the step S43;

Step S47: Divide the data corresponding to the execution time of the current sub-phase in each data element in the data data array by the number of operations corresponding to each variable element in the variable array to obtain statistics The average value of each stage data of each data element in each data data array is output.

Preferably, the signal source interface includes at least an analog TV signal interface and/or a digital TV signal interface and/or an analog video signal interface and/or an audio image signal interface.

The technical solution of the present invention has the beneficial effects of providing a signal source switching analysis method to realize the automatic statistical work of signal source interface interface switching data. The signal source interface switching data can be provided quickly and accurately, which greatly improves data statistics. Efficiency, which in turn improves R&D efficiency

Description of the drawings

With reference to the attached drawings, the embodiments of the present invention are described more fully. However, the attached drawings are only for illustration and illustration, and do not constitute a limitation on the scope of the present invention.

Figure 1 is a flow chart of the steps of switching from an ATV signal source interface to an HDMI signal source interface in the prior art;

2 is a flowchart of steps of a signal source switching analysis method according to an embodiment of the present invention;

FIG. 3 is a step flowchart 1 of the specific steps of analyzing, debugging, and printing a report according to an embodiment of the present invention;

FIG. 4 is a second step flowchart of the specific steps of analyzing, debugging and printing a report according to an embodiment of the present invention.

Detailed ways

The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work shall fall within the protection scope of the present invention.

It should be noted that the embodiments of the present invention and the features in the embodiments can be combined with each other if there is no conflict.

The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments, but it is not a limitation of the present invention.

The present invention includes a signal source switching analysis method, wherein a hardware interface and a hardware driver are provided, the hardware driver activates the hardware interface, and the switching analysis method specifically includes:

Step S1: Provide at least one signal source interface, and the hardware driver activates the signal source interface;

Step S2: Add a print mark to the signal source interface;

Step S3, switch the signal source interface, generate, record and save the debugging print report of the signal source interface;

Step S4: Export the debugging print report, and analyze the debugging print report to count the average value of the data at each stage and output the result.

Through the above-mentioned technical solution of the signal source switching analysis method, as shown in FIG. 2, a hardware interface and a hardware driver are provided. The hardware driver activates the hardware interface, that is, switches the signal source signal by switching the interface, wherein the signal source The interface includes at least an analog television signal interface ATV and/or a digital television signal interface DTV and/or an analog video signal interface AV and/or an audio image signal interface HDMI. In the code of the TV system, each module is in accordance with a unified printing mark. At each stage of the code execution process, debugging printing is added, and a debugging printing report is generated. Then, an automated tool is used to calculate statistics based on the printing mark and output the result as text , Among them, the debugging print report is exported in the form of text; the average value of the data of each stage is statistically output in the form of a table.

Further, to realize the automatic statistics of the signal source interface switching data, the signal source interface switching data can be provided quickly and accurately, which greatly improves the efficiency of data statistics, thereby improving the efficiency of research and development.

In the above technical solution, in step S2, the printing mark includes the currently switched signal source interface and/or the sub-phase executed by the current signal source interface and/or the execution time of the current sub-phase.

For example, the currently switched signal source interface refers to the “Operation” keyword that records which signal source interface is currently switched to; the sub-stage executed by the current signal source interface refers to the “Step” keyword that records the current code flow execution to the operation Which sub-phase; the execution time of the current sub-phase refers to when the “Time” keyword records the execution of the sub-phase.

Furthermore, after adding these debugging prints to the running code of the TV system, the user can switch the signal source interface while at the same time through the serial port or output the debug print with a fixed mark. Among them, all serial tools such as SecureCRT have automatic saving. The printing function is saved in the form of text.

In the above technical solution, in step S4, an analysis tool is used to analyze and debug the printed report.

For example, the analysis tool adopts the tv_profile_tool tool, and the tv_profile_tool adopts the shell and/or phython and/or java and/or c++ language to write to analyze and debug the print report.

Further, as shown in Figure 3, the specific steps of parsing and debugging the print report include:

Step 40: Scan, debug and print the report in the order from bottom to top;

Step S41: Judge whether it is the first time to scan the print mark of the currently switched signal source interface;

If yes, go to step S42;

If not, continue scanning;

Step S42: Create a new data data array, and save the data of each data element of each data element of the currently switched signal source interface in the data data array;

Create a new variable array. In the variable array, the number of operations of each variable element of the currently switched signal source interface will be recorded, and each time a scan is performed, the data element corresponds to the variable element one by one.

In the above technical solution, in step S40, when the print marks of the sub-stage executed by the current signal source interface and the execution time of the current sub-stage are scanned, the data corresponding to the sub-stage executed by the current signal source interface and the data corresponding to the current sub-stage are respectively scanned. The data of the execution time of the stage is saved in the data group according to the scanning order.

Further, as shown in FIG. 4, after step S42, the method further includes:

Step S43: Determine whether it is the second scan of the print mark of the currently switched signal source interface;

If yes, go to step S44;

If not, continue scanning;

Step S44: Determine whether the currently switched signal source interface is the same type of signal source interface switching operation;

If yes, go to step 45;

If not, return to step S41;

Step 45: Add one to the number of operations of the variable array, and respectively update the data corresponding to the sub-stage executed by the current signal source interface and the data corresponding to the execution time of the current sub-stage into the data array;

Step S46: It is judged whether the scanning of the debugging print report is finished;

If yes, go to step S47;

If not, return to step S43;

Step S47: Divide the data corresponding to the execution time of the current sub-stage in each data array by the number of operations of the corresponding variable array to obtain statistics and output the average value of the data in each stage in each data array.

In the above technical solution, as a preferred embodiment, taking the ATV cut HDMI1 audio image signal interface as an example, the content of the HashMap data array scanned for the first time is:

Operation	ATV->HDMI1
count (counter)	1
TvSourceFragment pressed UI button	108.589
stop TV play start	108.636635
tvserver stop TV play end	108.712952s
DroidLogicTvInputService start tuning source	109.025
(More follow-up processes)	(More follow-up data)

(2) The content of the HashMap data array of the second scan is:

Before calculation:

After calculation:

(3) Assuming that ATV cut HDMI1 audio image signal interface is only done twice, then after debugging, printing and parsing, the final HashMap data array after average calculation is:

Among them, the above calculation method is: the data of each stage minus the data of the previous stage, and then divided by the number of times corresponding to count.

(4) The final text output result can be sorted into a table with excel, so that you can intuitively see how much time is spent in each stage of each signal source interface operation.

Extensibly, this analysis tool does not limit the switching times of a certain signal source interface of a test plan, and can be combined in any combination. For example, ATV switches HDMI 20 times, HDMI switches DTV 15 times, DTV switches AV 16 times, and AV does not switch ATV. According to probability, the more switching times, the more accurate the statistical results.

Further, the work of automatic statistics of signal source interface switching data is realized, and the signal source interface switching data can be provided quickly and accurately, which greatly improves the efficiency of data statistics, thereby improving the efficiency of research and development.

The above descriptions are only preferred embodiments of the present invention, and do not limit the implementation and protection scope of the present invention. For those skilled in the art, they should be able to realize that all equivalents made by using the description and illustrations of the present invention The solutions obtained by substitutions and obvious changes should all be included in the protection scope of the present invention.

Claims (9)

1. A signal source switching analysis method, characterized in that a hardware interface and a hardware driver are provided, the hardware driver activates the hardware interface, and the switching analysis method specifically includes:

   Step S1: Provide at least one signal source interface, and the hardware driver activates the signal source interface;

   Step S2: Add a print mark to the signal source interface;

   Step S3: Switch the signal source interface, generate, record and save the debugging print report of the signal source interface;

   Step S4: Export the debugging print report, and analyze the debugging print report to count the average value of the data at each stage and output the result.
2. The signal source switching analysis method according to claim 1, wherein in the step S2, the printing mark includes the signal source interface currently switched and/or the current sub-stage executed by the signal source interface and / Or the execution time of the current sub-phase.
3. The signal source switching analysis method according to claim 1, wherein in the step S4, the debugging print report is exported in the form of text;

   The average value of each stage data is statistically output in the form of a table.
4. 4. The signal source switching analysis method according to claim 1, wherein in the step S4, an analysis tool is used to analyze the debugging print report.
5. The signal source switching analysis method according to claim 4, wherein the analysis tool is written in shell and/or phython and/or java and/or c++ language to analyze the debugging print report.
6. The signal source switching analysis method according to claim 2, wherein in the step S4, the specific step of parsing the debugging print report comprises:

   Step 40: Scan the debugging print report in a bottom-up order;

   Step S41: Determine whether it is the first scan of the print mark of the currently switched signal source interface;

   If yes, go to step S42;

   If not, continue scanning;

   Step S42: Create a new data array, and save the data of each stage of each data element of the signal source interface currently switched in the data array;

   Create a new variable array, and record the number of operations of each variable element of the signal source interface currently switched in the variable array, and each scan is performed, the data element corresponds to the variable element one-to-one.
7. The signal source switching analysis method according to claim 6, characterized in that, in the step S40, when the current sub-stage executed by the signal source interface and the current execution time of the sub-stage are scanned At the time, the data corresponding to the sub-phase currently executed by the signal source interface and the data corresponding to the execution time of the current sub-phase are respectively saved in the data array in the scanning order.
8. The signal source switching analysis method according to claim 6, characterized in that, after the step S42, it further comprises:

   Step S43: Determine whether it is the second scan of the print mark of the currently switched signal source interface;

   If yes, go to step S44;

   If not, continue scanning;

   Step S44: Determine whether the currently switched signal source interface is the same type of signal source interface switching operation;

   If yes, go to step 45;

   If not, return to the step S41;

   Step 45: Add one to the number of operations of the variable array, and respectively update the data corresponding to the sub-phase currently executed by the signal source interface and the data corresponding to the current execution time of the sub-phase into the data array;

   Step S46: It is judged whether the scanning of the debugging print report is finished;

   If yes, go to step S47;

   If not, return to the step S43;

   Step S47: Divide each data element in the data array corresponding to the current execution time of the sub-phase data by the number of operations corresponding to each variable element in the variable array to obtain statistics for each And output the average value of each stage data of each data element in the data array.
9. The signal source switching analysis method according to claim 1, wherein the signal source interface includes at least an analog TV signal interface and/or a digital TV signal interface and/or an analog video signal interface and/or an audio image signal interface .

Images