WO2023179136A1 - 一种视频压缩系统及服务器 - Google Patents
一种视频压缩系统及服务器 Download PDFInfo
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- WO2023179136A1 WO2023179136A1 PCT/CN2022/141690 CN2022141690W WO2023179136A1 WO 2023179136 A1 WO2023179136 A1 WO 2023179136A1 CN 2022141690 W CN2022141690 W CN 2022141690W WO 2023179136 A1 WO2023179136 A1 WO 2023179136A1
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N19/00—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals
- H04N19/42—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals characterised by implementation details or hardware specially adapted for video compression or decompression, e.g. dedicated software implementation
- H04N19/423—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals characterised by implementation details or hardware specially adapted for video compression or decompression, e.g. dedicated software implementation characterised by memory arrangements
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N19/00—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals
- H04N19/70—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals characterised by syntax aspects related to video coding, e.g. related to compression standards
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- the present application relates to the field of video processing technology, and in particular, to a video compression system and server.
- the transmission process of the video compression system in the traditional baseboard management control chip is: first, the VGA (Video Graphics Array) transfers the video information of the host (HOST) to the video compression control module (Video CMP IP) for video compression, and completes After compression, the data is written to DDR (Double Data Rate, double rate synchronous dynamic random access memory), the EMAC (network card) driver reads the compressed data, and transmits the video data to the remote (REMOTE) through the network for remote display.
- VGA Video Graphics Array
- Video CMP IP Video CMP IP
- DDR Double Data Rate, double rate synchronous dynamic random access memory
- the EMAC network card
- the video data on the host side is transmitted to the baseboard management control chip through PCIe (Peripheral Component Interconnect express, high-speed serial computer expansion bus), and then the original RGB format video data is converted into YUV (a color encoding method, Y represents brightness (Luminance, Luma), U and V represent chroma, density (Chrominance, Chroma)) format data, and then the Y, U, and V data are stored in the on-chip Resources (for example: RAM (Random Access Memory, random access memory abbreviation)) are cached according to the BLOCK (block) format conversion requirements, which require 16 Y_RAM, 16 U_RAM, and 16 V_RAM.
- PCIe Peripheral Component Interconnect express, high-speed serial computer expansion bus
- Such a large amount of concentrated RAM is placed in the chip layout, which causes great problems in the comprehensive constraints of the chip back-end, layout and routing, packaging and manufacturing, etc.
- Risk there are often problems with individual or multiple RAMs, such as inconsistent writing and reading of data, or even the inability to read data. Therefore, the video compression function of the substrate management control chip with integrated video compression function is stable after tape-out. The performance is relatively poor, and in severe cases, numbers may be lost and images may be disordered, posing a risk of project failure.
- this application proposes a video compression system and server, which optimizes the traditional video compression system, increases the stability of the video compression function, and avoids data loss or image disorder during the video compression process.
- a video compression system which may include:
- Central processing unit, hardware detection module, write control module, read control module, FIFO array module, the FIFO array module includes a selection switch;
- the central processing unit is configured to send a first enable signal to the hardware detection module, the read control module, and the selection switch;
- the selection switch is configured to select to write data to the FIFO array module through the hardware detection module in response to receiving the first enable signal
- the hardware detection module is configured to write the test data into the FIFO array module in response to receiving the first enable signal
- the read control module is configured to read test data from the FIFO array module in response to receiving the first enable signal, and transmit the read test data to the hardware detection module;
- the hardware detection module is also configured to compare the read test data with the test data written to the FIFO array module, and determine the compression format supported by the current video compression system based on the comparison results, and send the compression format supported by the current video compression system. to the central processing unit.
- the FIFO array module further includes multiple FIFOs
- the compression formats supported by the current video compression system are determined, including:
- the number of FIFOs with normal functions in the FIFO array module is determined based on the comparison results, and the compression format supported by the current video compression system is determined based on the number of FIFOs with normal functions.
- the hardware detection module can be configured as:
- test data read from the FIFO is the same as the test data written to the FIFO, the FIFO function is normal;
- test data read from the FIFO is different from the test data written to the FIFO, the FIFO function is not normal;
- the hardware detection module is further configured to send the number of functioning FIFOs to the write control module;
- the central processor is also configured to deliver the compression format for YUV data storage to the write control module and the read control module based on the compression format supported by the current video compression system;
- the write control module is configured to reorder the functioning FIFOs based on the number of functioning FIFOs and the compression format issued by the central processor, and to generate an interrupt signal after the reordering is completed to send the functioning FIFO reordering to the central processor. Complete the message.
- the central processor is further configured to send a second enable signal to the write control module, the read control module, and the selection switch in response to the completion of the functional FIFO reordering;
- the selection switch is further configured to control the write control module to write YUV data to the FIFO array module in response to receiving the second enable signal;
- the write control module is further configured to write YUV data into the corresponding FIFO based on the delivered compression format and the reordered FIFO in response to receiving the second enable signal;
- the read control module is further configured to, in response to receiving the second enable signal, read YUV data from the corresponding FIFO based on the issued compression format and the reordered FIFO, and transmit the read YUV data to the video compression control module for data compression.
- the compression formats include: YUV444, YUV422, YUV420;
- the compression formats supported by the current video compression system are YUV444, YUV422 and YUV420;
- the compression formats supported by the current video compression system are YUV444 and YUV420;
- reordering the FIFOs with normal functions based on the number of FIFOs with normal functions and the compression format issued by the central processor includes:
- sending the compression format supported by the current video compression system to the central processor includes:
- the first enable signal is one of high level or low level
- the corresponding second enable signal is the other one of low level or high level
- Another aspect of the embodiment of the present application also provides a server, including the above video compression system.
- the solution of this application detects the quality of the FIFO function before performing the video compression function, determines the compression format of the video compression system based on the number of FIFOs with normal functions, and performs video compression based on the determined compression format. , thereby increasing the stability of the video compression function.
- Figure 1 is a schematic structural diagram of an embodiment of a video compression system provided by this application.
- Figure 2 is a schematic structural diagram of a traditional video compression system in a baseboard management control chip
- Figure 3 is a schematic diagram of converting YUV format data into BLOCK format for storage
- Figure 4 is a flow chart of an embodiment of video compression performed by the video compression system provided by this application.
- FIG. 5 is a schematic structural diagram of an embodiment of the server provided by this application.
- a video compression system can include:
- Central processing unit 110, hardware detection module 120, write control module 130, read control module 140, FIFO array module 150, FIFO array module 150 includes a selection switch 151;
- the central processing unit 110 is configured to send a first enable signal to the hardware detection module 120, the read control module 140, and the selection switch 151;
- the selection switch 151 is configured to select to write data to the FIFO array module 150 through the hardware detection module 120 in response to receiving the first enable signal;
- the hardware detection module 120 is configured to write the test data to the FIFO array module 150 in response to receiving the first enable signal;
- the read control module 140 is configured to read the test data from the FIFO array module 150 in response to receiving the first enable signal, and transmit the read test data to the hardware detection module 120;
- the hardware detection module 120 is also configured to compare the read test data with the test data written to the FIFO array module 150, and determine the compression format supported by the current video compression system based on the comparison result, and compare the compression format supported by the current video compression system.
- the format is sent to the central processor 110.
- the traditional video compression system in the baseboard management control chip is shown in Figure 2.
- the video compression process is as follows:
- the original video information of the host is in RGB format.
- the RGB format video data is converted into YUV format (according to the matrix conversion formula) through the color space conversion module (RGB2YUV), and then through FIFO (First in First out, advanced First out) write control module (FIFO_WR_CTRL), FIFO array module (FIFO_ARRAY), FIFO read control module (FIFO_RD_CTRL), convert YUV format data into BLOCK format data and input it to the video compression control module (Video CMP IP).
- FIFO_WR_CTRL First in First out, advanced First out
- FIFO_ARRAY FIFO array module
- FIFO_RD_CTRL FIFO read control module
- Video CMP IP Video CMP IP
- Figure 3 is a schematic diagram of converting YUV format data into BLOCK format for storage.
- Cb represents the U component and Cr represents the V component.
- the left side of Figure 3 is the source image picture (Source Image Picture) of the YUV format video data. After Discrete Cosine Transform (DCT), it is stored in BLOCK order.
- height represents the height of the box
- width represents the width of the box
- each small box represents the left side of Figure 3.
- the 8*8 pixels on the side the large box represents 16*16 pixels
- the long box represents 8*16 pixels.
- the Y block represents the Y component of four 8*8 pixels
- the Cb block represents the U component of one 8*8 block
- the Cr block represents the V component of one 8*8 block.
- FIFO_WR_CTRL is based on the current CPU
- the compression mode (YUV444/YUV422/YUV420) is used to control the writing of the FIFO array, and FIFO_RD_CTRL also receives the control information of reading data from Video CMP IP according to the current compression mode. It is worth noting that FIFO_RD_CTRL does not care about Video CMP IP Instead of sending a read address, FIFO_RD_CTRL generates its own read control logic (according to the current compression mode) to read the corresponding FIFO.
- FIFO_WR_CTRL The YUV data writing control logic through FIFO_WR_CTRL is as follows:
- V_RAM_15 Write the V data of the 15/31/47/63... rows and even columns into V_RAM_15.
- V_RAM_1 Write the V data of rows 1/9/17/25... into V_RAM_1;
- FIFO_WR_CTRL The YUV data read control logic through FIFO_WR_CTRL is as follows:
- RAM_RD_CTRL does not care about the read address issued by Video CMPIP, but only cares about the read enable issued by Video CMP IP. It reads Y_RAM_0 16 times, Y_RAM_1 16 times,..., Y_RAM_15 16 times, U_RAM_0, 8 times 8 times. Times U_RAM_1,..., 8 times U_RAM_7, 8 times V_RAM_0, 8 times V_RAM_1,..., 8 times V_RAM_7 (the required number of FIFOs is 32).
- RAM_RD_CTRL does not care about the read address issued by Video CMP IP, but only cares about the read enable issued by Video CMP IP. It reads Y_RAM_0 16 times, Y_RAM1 16 times... Y_RAM_15 16 times, U_RAM_0 8 times, and U_RAM_1 8 times in sequence. ,...8 times U_RAM_15, 8 times V_RAM_0, 8 times V_RAM_1,...8 times V_RAM_15 (the required number of FIFOs is 48).
- RAM_RD_CTRL does not care about the read address issued by Video CMP_IP, but only cares about the read enable issued by Video CMP IP. It reads Y_RAM_0 8 times, Y_RAM_1 8 times,..., Y_RAM_7 8 times, U_RAM_0 8 times, 8 times in sequence. U_RAM_1,..., 8 times U_RAM_7, 8 times V_RAM_0, 8 times V_RAM_1,..., 8 times V_RAM_7 (the required number of FIFOs is 24).
- Such a large amount of concentrated RAM causes great risks in the comprehensive constraints of the chip back-end, layout and wiring, packaging and manufacturing, etc., and there are often individual /
- There are problems with multiple RAMs such as the data being written and read out is inconsistent, or even the data cannot be read out. Therefore, the functional stability of the traditional video compression system after tape-out is relatively poor, and in serious cases, data loss or even data loss may occur. Image disorder and other issues.
- the embodiment of the present application proposes a video compression system, which optimizes the traditional video compression system.
- a hardware detection module FIFO_HARDWARE_CHECK
- SWITCH traditional video compression system.
- SWITCH modified the read and write control logic of the FIFO write control module (FIFO_WR_CTRL) and FIFO read control module (FIFO_RD_CTRL) to optimize the traditional video compression system and increase the stability of the video compression function.
- the video compression system in the embodiment of the present application is applied to the substrate management control chip. As shown in Figure 4, it is a flow chart of video compression performed by the video compression system according to the embodiment of the present application.
- the optional video compression process is as follows:
- Step S101 The central processing unit (CPU) sends a first enable signal to the hardware detection module, read control module, and selection switch;
- Step S103 After receiving the first enable signal, the selection switch selects to write data to the FIFO array module through the hardware detection module;
- Step S105 After receiving the first enable signal, the hardware detection module writes the test data into the FIFO array module;
- Step S107 The read control module receives the first enable signal, reads the test data from the FIFO array module, and transmits the read test data to the hardware detection module;
- Step S109 After receiving the test data read by the read control module, the hardware detection module compares the read test data with the test data previously written to the FIFO array module, and determines based on the comparison result what the current video compression system supports. Compression format, and sends the compression format supported by the current video compression system to the central processor.
- step S101 by adding and configuring a hardware detection module, the functions of the video compression system are divided into hardware detection functions and video compression functions, and the central processor sends an enabling signal to control which function is turned on.
- this implementation first performs hardware function detection, that is, detecting whether each FIFO function in the FIFO array module is normal.
- the central processor sends the first enable signal to the hardware detection module, read control module, and selection switch respectively.
- the first enable signal can be either 1 (high level) or 0 (low level).
- step S103 after the selection switch receives the first enable signal, the selection switch selects the hardware detection module to be connected to the FIFO array module to write data to the FIFO array module through the hardware detection module.
- step S105 after receiving the first enable signal, the hardware detection module writes the test data into the FIFO array module, where the number of test data is 8 bits.
- step S107 the read control module receives the first enable signal, reads the test data from the FIFO array module, and transmits the read test data to the hardware detection module.
- step S109 after receiving the test data read by the read control module, the hardware detection module traverses all the storage spaces of each FIFO in the FIFO array module, and compares the value written in each storage space of each FIFO with the value read Is the value of The compressed format is sent to the central processor.
- the FIFO array module further includes multiple FIFOs
- the compression formats supported by the current video compression system are determined, including:
- the number of FIFOs with normal functions in the FIFO array module is determined based on the comparison results, and the compression format supported by the current video compression system is determined based on the number of FIFOs with normal functions.
- the hardware detection module can be configured as:
- test data read from the FIFO is the same as the test data written to the FIFO, the FIFO function is normal;
- test data read from the FIFO is different from the test data written to the FIFO, the FIFO function is not normal;
- the hardware detection module is further configured to send the number of functioning FIFOs to the write control module;
- the central processor is also configured to deliver the compression format for YUV data storage to the write control module and the read control module based on the compression format supported by the current video compression system;
- the write control module is configured to reorder the functioning FIFOs based on the number of functioning FIFOs and the compression format issued by the central processor, and to generate an interrupt signal after the reordering is completed to send the functioning FIFO reordering to the central processor. Complete the message.
- the central processor After the central processor receives the compression format supported by the current video compression system, it issues the compression format to be applied to the write control module and the read control module; the write control module is based on the number of FIFOs with normal functions and the compression format issued by the central processor. Reorder the FIFO with normal functions, and generate an interrupt signal after the reordering is completed to send the FIFO reordering completion information with normal functions to the central processor. At this point, the hardware detection function ends, and the normal video compression function can be turned on through the CPU.
- This implementation reorders the FIFOs with normal functions by writing the control module, so that even if some FIFOs in the FIFO array module function abnormally, video compression in the corresponding compression format can still be performed, which improves the video compression function of the video compression system. stability.
- the central processor is further configured to send a second enable signal to the write control module, the read control module, and the selection switch in response to the completion of the functional FIFO reordering;
- the selection switch is further configured to control the write control module to write YUV data to the FIFO array module in response to receiving the second enable signal;
- the write control module is further configured to write YUV data into the corresponding FIFO based on the delivered compression format and the reordered FIFO in response to receiving the second enable signal;
- the read control module is further configured to, in response to receiving the second enable signal, read YUV data from the corresponding FIFO based on the issued compression format and the reordered FIFO, and transmit the read YUV data to the video compression control module for data compression.
- the compression formats include: YUV444, YUV422, YUV420;
- the compression formats supported by the current video compression system are YUV444, YUV422 and YUV420;
- the compression formats supported by the current video compression system are YUV444 and YUV420;
- the number of FIFOs used in each compression format is different: 32 for YUV420, 48 for YUV422, and 24 for YUV444.
- Determine the compression format supported by the current video compression system by combining the number of FIFOs used for each compression format and the number of normal-functioning FIFOs to ensure that the video compression system can perform video compression normally to avoid data loss or image disorder.
- reordering the FIFOs with normal functions based on the number of FIFOs with normal functions and the compression format issued by the central processor includes:
- sending the compression format supported by the current video compression system to the central processor includes:
- the first enable signal is one of high level or low level
- the corresponding second enable signal is the other one of low level or high level
- the central processing unit sends a first enable signal to the hardware detection module, read control module, and selection switch to start detecting the FIFO memory hardware function.
- the hardware detection module After receiving the first enable signal sent by the CPU, the hardware detection module (FIFO_HARDWARE_CHECK) begins to detect the FIFO hardware in the FIFO array module (FIFO_ARRAY) and writes test data to the FIFO array module (FIFO_ARRAY).
- the first enable signal is also sent to the selection switch (SWITCH) in FIFO_ARRAY.
- SWITCH selects the hardware detection module to be connected to the FIFO array module (corresponding to arrow 2 in Figure 1) to Write data to the FIFO array module through the hardware detection module.
- SWITCH also determines which FIFO the test data is written to during FIFO hardware detection.
- the first enable signal is also sent to FIFO_RD_CTRL.
- FIFO_RD_CTRL will sequentially read the 48 FIFO values of Y_FIFO_0...U_FIFO_15 (corresponding to arrow 3 in Figure 1). The read The test data is transferred to FIFO_HARDWARE_CHECK (corresponding to arrow 5 in Figure 1).
- FIFO_HARDWARE_CHECK compares the test data written to FIFO_ARRAY and the test data read back by the received FIFO_RD_CTRL, traverses all the storage spaces of each FIFO in FIFO_ARRAY, and compares the test data written to the storage space with the test data read back from the storage space. Whether the test data is the same; if it is found that the test data written in the FIFO is different from the test data read back, it means that the FIFO function is abnormal.
- test data written in the FIFO is the same as the test data read back, it means the FIFO
- the function is normal; the number of FIFOs with normal functions is counted, and based on this number, the compression format supported by the hardware under the current FIFO condition is obtained, and an interrupt is reported to the CPU, so that the CPU can learn the compression format supported by the current compression system.
- FIFO_WR_CTRL reorders the FIFOs with normal functions based on the FIFO function detection results of FIFO_HARDWARE_CHECK, which interrupts the original FIFO read and write enable signal generation logic and produces new FIFO read and write enable signals.
- Write enable control logic for example, if Y_FIFO_15 is found to be broken after hardware detection, U_FIFO_0 will be incremented as the position of Y_FIFO_15 to realize the function of Y_FIFO_15, and its subsequent U_FIFO_1 will be incremented as the position of the original U_FIFO_0 to realize the function of U_FIFO_0.
- the optional reordering process is as follows:
- the first 32 FIFOs with normal function will be reordered, and the first 16 FIFOs will be used as Y_FIFO_0,..., Y_FIFO_15, and the middle 8 FIFOs will be used as U_FIFO_0,... , U_FIFO_7, the next 8 FIFOs are used as V_FIFO_0,..., V_FIFO_7.
- the CPU supports YUV444/YUV420 compression format, and the CPU can issue any one of the YUV444/YUV420 compression formats;
- the first 24 FIFOs with normal function will be reordered, and the first 8 FIFOs will be used as Y_FIFO_0,..., Y_FIFO_7, and the middle 8 FIFOs will be used as U_FIFO_0,... , U_FIFO_7, the next 8 FIFOs are used as V_FIFO_0,..., V_FIFO_7.
- YUV444 compression format is supported at this time).
- the CPU supports the YUV444 compression format, and the CPU can issue the YUV444 compression format.
- the CPU sends the second enable signal to the write control module (FIFO_WR_CTRL), the read control module (FIFO_RD_CTRL) and the selection switch (SWITCH) to enable the video compression function.
- the second enable signal is connected to the first The first enable signal is opposite, for example, if the second enable signal is 0, then the first enable signal is 1;
- the selection switch After the selection switch receives the second enable signal, it controls the write control module to be connected to the FIFO array module to write YUV data to the FIFO array module through the write control module;
- the write control module After receiving the second enable signal, the write control module writes YUV data into the corresponding FIFO based on the delivered compression format and the reordered FIFO;
- the read control module After the read control module receives the second enable signal, it reads the YUV data from the corresponding FIFO based on the delivered compression format and the reordered FIFO (corresponding to arrow 3 in Figure 1), and converts the read YUV data into The BLOCK format is transmitted to the video compression control module (Video CMP IP) (corresponding to arrow 4 in Figure 1) for data compression.
- Video CMP IP Video CMP IP
- Video CMP IP performs video compression, writes the compressed video data to DDR, and the network driver reads the compressed video data and sends it to the remote through EMAC for display.
- an embodiment of the present application also provides a server, including the above video compression system.
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Abstract
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- 一种视频压缩系统,其特征在于,包括:中央处理器、硬件检测模块、写控制模块、读控制模块、FIFO阵列模块,所述FIFO阵列模块包括选择开关;所述中央处理器配置为发送第一使能信号到所述硬件检测模块、所述读控制模块、所述选择开关;所述选择开关配置为响应于接收到所述第一使能信号,选择通过所述硬件检测模块向所述FIFO阵列模块写入数据;所述硬件检测模块配置为响应于接收到所述第一使能信号,将测试数据写入所述FIFO阵列模块;所述读控制模块配置为响应于接收到所述第一使能信号,从FIFO阵列模块读出测试数据,并将读出的测试数据传输到所述硬件检测模块;所述硬件检测模块还配置为将所述读出的测试数据与向所述FIFO阵列模块写入的测试数据进行对比,并基于对比结果确定当前视频压缩系统支持的压缩格式,并将所述当前视频压缩系统支持的压缩格式发送给所述中央处理器。
- 根据权利要求1所述的系统,其中,所述视频压缩系统的功能被划分为硬件检测功能和视频压缩功能,其中,所述中央处理器配置为通过下发使能信号来控制开启硬件检测功能或者视频压缩功能。
- 根据权利要求2所述的系统,其中,所述中央处理器配置为在控制所述视频压缩系统开启所述视频压缩功能之前,检测所述FIFO阵列模块中的每一个FIFO功能是否正常。
- 根据权利要求3所述的系统,其中,所述中央处理器配置为下发所述第一使能信号至所述硬件检测模块、所述读控制模块和所述选择开关以进行FIFO功能检测。
- 根据权利要求1所述的系统,其特征在于,所述硬件检测模块配置为结合每种压缩格式所要用到的FIFO数量和功能正常的FIFO数量确定当前视频压缩系统支持的压缩格式。
- 根据权利要求1所述的系统,其特征在于,所述FIFO阵列模块还包括多个 FIFO;基于对比结果确定当前视频压缩系统支持的压缩格式,包括:基于对比结果确定所述FIFO阵列模块中功能正常的FIFO数量,并基于所述功能正常的FIFO数量确定当前视频压缩系统支持的压缩格式。
- 根据权利要求6所述的系统,其特征在于,所述硬件检测模块配置为:遍历所述FIFO阵列模块中的每一个FIFO,对比从所述FIFO读出的测试数据与向所述FIFO写入的测试数据是否相同;若是从所述FIFO读出的测试数据与向所述FIFO写入的测试数据相同,则所述FIFO的功能正常;若是从所述FIFO读出的测试数据与向所述FIFO写入的测试数据不相同,则所述FIFO的功能不正常;统计功能正常的FIFO数量,基于所述功能正常的FIFO数量确定当前视频压缩系统支持的压缩格式;将所述当前视频压缩系统支持的压缩格式发送给所述中央处理器。
- 根据权利要求7所述的系统,其特征在于,所述硬件检测模块还配置为:遍历FIFO阵列模块中每一个FIFO的所有存储空间,对比每一个FIFO的每一个存储空间写入的值和读出的值是否相同。
- 根据权利要求7所述的系统,其特征在于,所述硬件检测模块还配置为将所述功能正常的FIFO数量发送给所述写控制模块;所述中央处理器还配置为基于所述当前视频压缩系统支持的压缩格式,向所述写控制模块和所述读控制模块下发用于YUV数据存储的压缩格式;所述写控制模块配置为基于所述功能正常的FIFO数量和所述中央处理器下发的压缩格式对所述功能正常的FIFO进行重排序,并在重排序完成后生成中断信号以向所述中央处理器发送功能正常的FIFO重排序完成信息。
- 根据权利要求9所述的系统,其特征在于,所述中央处理器配置为在接收到功能正常的FIFO重排序完成信息之后,控制所述视频压缩系统开启视频压缩功能。
- 根据权利要求9所述的系统,其特征在于,所述中央处理器还配置为响应于所 述功能正常的FIFO重排序完成,发送第二使能信号到所述写控制模块、所述读控制模块、所述选择开关;所述选择开关还配置为响应于接收到第二使能信号,控制所述写控制模块向所述FIFO阵列模块写入YUV数据;所述写控制模块还配置为响应于接收到所述第二使能信号,基于所述下发的压缩格式和重排序后的FIFO,将所述YUV数据写入对应的FIFO;所述读控制模块还配置为响应于接收到所述第二使能信号,基于所述下发的压缩格式和重排序后的FIFO从对应的FIFO读出所述YUV数据,并将读出的所述YUV数据传输到视频压缩控制模块以进行数据压缩。
- 根据权利要求7所述的系统,其特征在于,所述压缩格式包括:YUV444、YUV422、YUV420;基于所述功能正常的FIFO数量确定当前视频压缩系统支持的压缩格式,包括:若所述功能正常的FIFO数量大于等于48,则确定当前视频压缩系统支持的压缩格式为YUV444、YUV422和YUV420;若所述功能正常的FIFO数量大于等于32且小于48,则确定当前视频压缩系统支持的压缩格式为YUV444和YUV420;若所述功能正常的FIFO数量大于等于24且小于32,则确定当前视频压缩系统支持的压缩格式为YUV444。
- 根据权利要求9所述的系统,其特征在于,基于所述功能正常的FIFO数量和所述中央处理器下发的压缩格式对所述功能正常的FIFO进行重排序,包括:基于所述功能正常的FIFO数量和所述中央处理器下发的压缩格式修改所述FIFO阵列模块中FIFO的读写控制逻辑。
- 根据权利要求13所述的系统,其特征在于,所述基于所述功能正常的FIFO数量和所述中央处理器下发的压缩格式修改所述FIFO阵列模块中FIFO的读写控制逻辑,包括:若FIFO功能正常的数据大于等于32且小于48,则将前32个功能正常的FIFO进行重排序,将前16个FIFO用作Y_FIFO_0,……,Y_FIFO_15,中间8个FIFO用作 U_FIFO_0,……,U_FIFO_7,后面8个FIFO用作V_FIFO_0,……,V_FIFO_7。
- 根据权利要求14所述的系统,其特征在于,所述基于所述功能正常的FIFO数量和所述中央处理器下发的压缩格式修改所述FIFO阵列模块中FIFO的读写控制逻辑,包括:若FIFO功能正常的数据大于等于24且小于32,则将前24个功能正常的FIFO进行重排序,将前8个FIFO用作Y_FIFO_0,……,Y_FIFO_7,中间8个FIFO用作U_FIFO_0,……,U_FIFO_7,后面8个FIFO用作V_FIFO_0,……,V_FIFO_7。
- 根据权利要求1所述的系统,其特征在于,将所述当前视频压缩系统支持的压缩格式发送给所述中央处理器包括:生成中断信号以将所述当前视频压缩系统支持的压缩格式发送给所述中央处理器。
- 根据权利要求11所述的系统,其特征在于,所述第一使能信号为高电平或低电平中的一个,对应的所述第二使能信号为低电平或高电平中的另一个。
- 根据权利要求1所述的系统,其特征在于,所述选择开关配置为确定在FIFO硬件检测的时候所述测试数据所写入的FIFO。
- 根据权利要求1所述的系统,其特征在于,所述读控制模块配置为接收到所述第二使能信号后,基于下发的压缩格式和重排序后的FIFO从对应的FIFO读出YUV数据,并将读出的YUV数据将块格式传输到视频压缩控制模块;所述视频压缩控制模块配置为进行视频压缩,将完成压缩的视频数据写到DDR双倍速率同步动态随机存储器,网络驱动读取压缩完成的视频数据通过EMAC网卡发送至远程进行显示。
- 一种服务器,其特征在于,包括如权利要求1至19任意一项所述的视频压缩系统。
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