CN117241043B - Method, system and storage medium for recovering decoding error of video hardware - Google Patents
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Abstract
The invention discloses a method, a system and a storage medium for recovering decoding errors of video hardware, wherein the method comprises the following steps: the method comprises the steps of distributing unique output sequence numbers to coded data of frames to be decoded; establishing a GOP buffer zone for buffering GOP sequences being decoded by a current hardware decoder; if the hardware decoder has errors, recording the output sequence number of the decoding data of the last frame when the errors occur; resetting a hardware decoder, removing decoding related cache data on a current video memory and obtaining data in a GOP buffer area; starting decoding from the first frame of encoded data in the GOP buffer zone, judging whether the output sequence number of the decoded video frame is equal to the output sequence number of the decoded data of the last frame when an error occurs in a hardware decoder, and if so, sending the decoded data to display; and if the video frame data are not equal, discarding the video frame data which are decoded currently, and continuing to decode the next frame data in the GOP buffer. All recovery work is driven and completed in the user layer, the player does not need to be restarted, and the use experience is improved.
Description
Technical Field
The invention belongs to the technical field of video coding and decoding, and particularly relates to a method, a system and a storage medium for recovering decoding errors of video hardware.
Background
With the improvement of video resolution and code rate and the use of more and more efficient video coding technology, the CPU decodes high-resolution and high-code rate video more and more hard. Video hardware decoding becomes an essential feature of today's graphics card manufacturers. When the video card is used for decoding hardware, the problem of decoder abnormality can be encountered, decoding errors are stopped at the moment, and the player is usually required to be restarted to decode and play, so that time is consumed, and experience is further affected.
Disclosure of Invention
The invention aims at the problems and provides a method, a system and a storage medium for recovering decoding errors of video hardware, when the decoder has errors, the driver can automatically reset the hardware decoder, and the video is continuously decoded and played from the video frame when the errors occur, so that the application is basically not influenced, and the use experience is improved.
According to a first aspect of embodiments of the present disclosure, there is provided a method of video hardware decoding error recovery, the method comprising the steps of:
the method comprises the steps of distributing a unique output sequence number to coded data of each frame to be decoded, which is sent by a data application layer;
establishing a GOP buffer zone for buffering a GOP sequence being decoded by a current hardware decoder, wherein each frame of coded data in the GOP sequence comprises a data position and an output sequence number;
if the hardware decoder has errors, recording the output sequence number of the decoding data of the last frame when the errors occur;
resetting a hardware decoder, removing decoding related cache data on a current video memory and obtaining data in a GOP buffer area;
starting decoding from the first frame of encoded data in the GOP buffer zone, judging whether the output sequence number of the decoded video frame is equal to the output sequence number of the decoded data of the last frame when an error occurs in a hardware decoder, if so, sending the decoded data to display, and sending the data to be decoded of the next frame from a data application layer; and if the video frame data are not equal, discarding the video frame data which are decoded currently, and continuing to decode the next frame data in the GOP buffer.
In an embodiment, for each frame of encoded data to be decoded sent by the data application layer, it is determined whether the frame of encoded data is the first frame of a GOP, if so, a complete GOP data currently stored in the GOP buffer is deleted and the first frame of encoded data is stored in the GOP buffer, if not, the frame of encoded data is directly stored in the GOP buffer, and the data is stored using a linear data structure of a linked list.
According to a second aspect of embodiments of the present disclosure, there is provided a video hardware decoding error recovery system, the system comprising:
the output sequence number distribution module is used for distributing a unique output sequence number to each frame of coded data to be decoded, which is sent by the data application layer;
the GOP buffer storage module is used for establishing a GOP buffer for caching a GOP sequence being decoded by a current hardware decoder, wherein each frame of encoded data in the GOP sequence comprises a data position and an output sequence number;
the decoding error processing module is used for recording the output sequence number of the decoding data of the last frame when the error occurs to the hardware decoder; resetting a hardware decoder, removing decoding related cache data on a current video memory and obtaining data in a GOP buffer area; starting decoding from the first frame of encoded data in the GOP buffer zone, judging whether the output sequence number of the decoded video frame is equal to the output sequence number of the decoded data of the last frame when an error occurs in a hardware decoder, if so, sending the decoded data to display, and sending the data to be decoded of the next frame from a data application layer; and if the video frame data are not equal, discarding the video frame data which are decoded currently, and continuing to decode the next frame data in the GOP buffer.
In an embodiment, the GOP buffer storage module determines, for each frame of encoded data to be decoded sent by the data application layer, whether the frame of encoded data is a first frame of a GOP, if yes, deletes a complete GOP data currently stored in the GOP buffer and stores the first frame of encoded data in the GOP buffer, if not, directly stores the frame of encoded data in the GOP buffer, and the data is stored using a linear data structure of a linked list.
According to a third aspect of embodiments of the present disclosure, there is provided an electronic device including a memory, a processor, and a computer program stored on the memory and executable on the processor, the processor implementing a method of video hardware decoding error recovery as described above when executing the program.
According to a fourth aspect of embodiments of the present disclosure, there is provided a non-transitory computer-readable storage medium having stored thereon computer instructions that, when executed by a processor, implement a method of video hardware decoding error recovery as described above.
The technical scheme provided by the embodiment of the disclosure is as follows: a method, a system and a storage medium for recovering decoding errors of video hardware, wherein all recovery works are driven to be completed at a user layer without restarting a player, so that the method, the system and the storage medium are basically noninductive to upper-layer application and improve the use experience; and only one GOP data at most needs to be cached, so that the use of the memory space is reduced as much as possible, and the efficiency is higher.
It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the disclosure.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the invention and together with the description, serve to explain the principles of the invention
FIG. 1 is a flow chart of a method for recovering decoding errors of video hardware according to an embodiment of the present invention;
FIG. 2 is a schematic diagram of a decoding error recovery system of video hardware according to an embodiment of the present invention;
fig. 3 is a block diagram of an electronic device in an embodiment of the invention.
Description of the embodiments
The invention is described in further detail below with reference to the drawings and examples. It is to be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the invention. It should be further noted that, for convenience of description, only some, but not all of the structures related to the present invention are shown in the drawings.
Before discussing exemplary embodiments in more detail, it should be mentioned that some exemplary embodiments are described as processes or methods depicted as flowcharts. Although a flowchart depicts steps as a sequential process, many of the steps may be implemented in parallel, concurrently, or with other steps. Furthermore, the order of the steps may be rearranged. The process may be terminated when its operations are completed, but may have additional steps not included in the figures. The processes may correspond to methods, functions, procedures, subroutines, and the like.
The embodiment of the invention provides a method, a system and a storage medium for recovering decoding errors of video hardware, which comprises the following steps:
embodiment 1 is a method for explaining video hardware decoding error recovery, referring to fig. 1, which is a flowchart of a method for video hardware decoding error recovery in an embodiment, and the steps include:
the method comprises the steps of distributing a unique output sequence number to coded data of each frame to be decoded, which is sent by a data application layer;
establishing a GOP buffer zone for buffering a GOP sequence being decoded by a current hardware decoder, wherein each frame of coded data in the GOP sequence comprises a data position and an output sequence number;
if the hardware decoder has errors, recording the output sequence number of the decoding data of the last frame when the errors occur;
resetting a hardware decoder, removing decoding related cache data on a current video memory and obtaining data in a GOP buffer area;
starting decoding from the first frame of encoded data in the GOP buffer zone, judging whether the output sequence number of the decoded video frame is equal to the output sequence number of the decoded data of the last frame when an error occurs in a hardware decoder, if so, sending the decoded data to display, and sending the data to be decoded of the next frame from a data application layer; and if the video frame data are not equal, discarding the video frame data which are decoded currently, and continuing to decode the next frame data in the GOP buffer.
And judging whether the frame coding data is the first frame of one GOP or not according to the frame coding data to be decoded sent by the data application layer, if so, deleting one complete GOP data currently stored in the GOP buffer zone and storing the first frame coding data into the GOP buffer zone, and if not, directly storing the frame coding data into the GOP buffer zone and storing the data by using a linear data structure of a linked list.
Referring to fig. 1, in the implementation process:
1) The upper layer application program sends the demultiplexed coded data of one frame to a user layer driver;
2) The user layer driver allocates an output sequence number for the frame of encoded data, wherein the output sequence number is globally unique in the process of decoding a video file;
3) The user layer driver receives the coded data sent by the upper layer application, judges whether the coded data is the first frame of a GOP, if so, the step 4) is carried out, and if not, the step 5) is carried out;
4) Deleting the currently stored GOP data and continuing the step 5) if the current GOP buffer area has a complete GOP data;
5) Storing a frame of coded data sent by an upper layer application into a GOP buffer area, storing the data by using a linear data structure of a linked list, and marking the position and sequence number of the data;
6) If the hardware decoder has errors, recording the output sequence number of the decoded data of the last frame before the errors;
7) Resetting a hardware decoder, and clearing cache data related to decoding on the current video memory;
8) Acquiring data in a GOP buffer area, and decoding frame data in the GOP buffer area from first frame data;
9) Judging whether the display sequence number of the decoded video frame is equal to the output sequence number of the video frame when the decoder has errors, if so, sending the decoded data to display, and the next frame of data to be decoded is from a frame of encoded data sent by an application layer; and if the video frame data are not equal, discarding the video frame data which are decoded currently, and continuing to decode the next frame data in the GOP buffer.
It should be noted that, before the first frame of the next GOP arrives, the GOP buffer will store the encoded data sent from the application layer, and will not be deleted, and will remain (i.e. buffer one GOP sequence while playing). When an abnormality occurs in the decoder, a frame of data currently decoded is stored in the GOP buffer (the GOP buffer at this time already stores a plurality of frames of encoded data, and these are all already decoded and displayed, and a frame of encoded data at the time of decoding abnormality is added to the tail of the GOP buffer data queue.) when an abnormality occurs, it is assumed that the output sequence number of the last frame played before the abnormality is n, this frame is stored in the GOP buffer, and thus the hardware decoder is reinitialized, and then when the data in the GOP buffer is decoded, a frame whose output sequence number is n (because this frame is in the buffered GOP sequence and is the last frame displayed) is decoded, and this frame of video is displayed. Subsequent decoding will not take from the GOP buffer and will continue to decode video frames from the upper layer application.
Another embodiment is used to illustrate a video hardware decoding error recovery system, see fig. 2, the system 200 comprising:
an output sequence number distribution module 210, configured to distribute a unique output sequence number to each frame of encoded data to be decoded, which is sent by the data application layer;
the GOP buffer storage module 220 establishes a GOP buffer for buffering a GOP sequence being decoded by the current hardware decoder, where each frame of encoded data in the GOP sequence includes a data location and an output sequence number;
the decoding error processing module 230 is configured to record an output sequence number of the decoded data of the last frame when an error occurs in the hardware decoder; resetting a hardware decoder, removing decoding related cache data on a current video memory and obtaining data in a GOP buffer area; starting decoding from the first frame of encoded data in the GOP buffer zone, judging whether the output sequence number of the decoded video frame is equal to the output sequence number of the decoded data of the last frame when an error occurs in a hardware decoder, if so, sending the decoded data to display, and sending the data to be decoded of the next frame from a data application layer; and if the video frame data are not equal, discarding the video frame data which are decoded currently, and continuing to decode the next frame data in the GOP buffer.
The GOP buffer storage module 220 determines, for each frame of encoded data to be decoded sent by the data application layer, whether the frame of encoded data is the first frame of a GOP, if so, deletes a complete GOP data currently stored in the GOP buffer and stores the first frame of encoded data in the GOP buffer, if not, directly stores the frame of encoded data in the GOP buffer, and stores the data using a linear data structure of a linked list.
In addition to the above modules, the system 200 may include other components, however, since these components are not related to the contents of the embodiments of the present disclosure, illustration and description thereof are omitted herein.
Other specific working procedures of the video hardware decoding error recovery system 200 are described with reference to the above embodiments of the method for video hardware decoding error recovery, and are not repeated.
Another embodiment is provided to illustrate that the system of the present invention may also be implemented by means of the architecture of the computing device shown in fig. 3. Fig. 3 illustrates an architecture of the computing device. As shown in fig. 3, a computer system 310, a system bus 330, one or more CPUs 340, input/output 320, memory 350, and the like. Memory 350 may store various data or files used for computer processing and/or communication and program instructions executed by the CPU including methods for embodiment video hardware decoding error recovery. The architecture shown in fig. 3 is merely exemplary, and one or more of the components in fig. 3 may be adapted as needed to implement different devices. The memory 350 is used as a computer readable storage medium for storing software programs, computer executable programs, and modules, such as program instructions/modules corresponding to the method for recovering video hardware decoding errors in the embodiment of the present invention (e.g., the output sequence number allocation module 210, the GOP buffer storage module 220, and the decoding error processing module 230 in the video hardware decoding error recovery system 200). The one or more CPUs 340 execute various functional applications and data processing of the system of the present invention by running software programs, instructions and modules stored in the memory 350, i.e., a method for implementing the above-mentioned video hardware decoding error recovery, the method comprising:
the method comprises the steps of distributing a unique output sequence number to coded data of each frame to be decoded, which is sent by a data application layer;
establishing a GOP buffer zone for buffering a GOP sequence being decoded by a current hardware decoder, wherein each frame of coded data in the GOP sequence comprises a data position and an output sequence number;
if the hardware decoder has errors, recording the output sequence number of the decoding data of the last frame when the errors occur;
resetting a hardware decoder, removing decoding related cache data on a current video memory and obtaining data in a GOP buffer area;
starting decoding from the first frame of encoded data in the GOP buffer zone, judging whether the output sequence number of the decoded video frame is equal to the output sequence number of the decoded data of the last frame when an error occurs in a hardware decoder, if so, sending the decoded data to display, and sending the data to be decoded of the next frame from a data application layer; and if the video frame data are not equal, discarding the video frame data which are decoded currently, and continuing to decode the next frame data in the GOP buffer.
Of course, the processor of the server provided by the embodiment of the present invention is not limited to performing the method operations described above, and may also perform the related operations in the method for recovering decoding errors of video hardware provided by any embodiment of the present invention.
Memory 350 may include primarily a program storage area and a data storage area, wherein the program storage area may store an operating system, at least one application program required for functionality; the storage data area may store data created according to the use of the terminal, etc. In addition, memory 350 may include high-speed random access memory, and may also include non-volatile memory, such as at least one magnetic disk storage device, flash memory device, or other non-volatile solid-state storage device. In some examples, memory 350 may further include memory remotely located with respect to one or more CPUs 340, which may be connected to the device via a network. Examples of such networks include, but are not limited to, the internet, intranets, local area networks, mobile communication networks, and combinations thereof.
Input/output 320 may be used to receive input numeric or character information and to generate key signal inputs related to user settings and function control of the device. Input/output 320 may also include a display device such as a display screen.
The embodiment of the invention also provides a non-transitory computer readable storage medium, on which a computer program is stored, which when executed by a processor, implements the method for recovering decoding errors of video hardware described in the above embodiment. The computer readable medium may be a computer readable signal medium or a computer readable storage medium. The computer readable storage medium can be, for example, but not limited to, an electronic, magnetic, optical, electromagnetic, infrared, or semiconductor system, apparatus, or device, or a combination of any of the foregoing. More specific examples (a non-exhaustive list) of the computer-readable storage medium would include the following: an electrical connection having one or more wires, a portable computer diskette, a hard disk, a Random Access Memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), an optical fiber, a portable compact disc read-only memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination of the foregoing. In this document, a computer readable storage medium may be any tangible medium that can contain, or store a program for use by or in connection with an instruction execution system, apparatus, or device.
The computer readable signal medium may include a propagated data signal with computer readable program code embodied therein, either in baseband or as part of a carrier wave. Such a propagated data signal may take any of a variety of forms, including, but not limited to, electro-magnetic, optical, or any suitable combination of the foregoing. A computer readable signal medium may also be any computer readable medium that is not a computer readable storage medium and that can communicate, propagate, or transport a program for use by or in connection with an instruction execution system, apparatus, or device.
Program code embodied on a storage medium may be transmitted using any appropriate medium, including but not limited to wireless, wireline, optical fiber cable, RF, etc., or any suitable combination of the foregoing.
In addition, the description of the embodiments of the method for recovering decoding errors of video hardware is referred to in other specific working processes of a non-transitory computer readable storage medium, and is not repeated.
In summary, the technical schemes provided by the embodiments above, a method, a system and a storage medium for recovering decoding errors of video hardware, wherein all recovery works are driven and completed at a user layer without restarting a player, are basically noninductive to upper layer applications, and improve the use experience; and only one GOP data at most needs to be cached, so that the use of the memory space is reduced as much as possible, and the efficiency is higher.
In this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, or apparatus.
The foregoing is a further detailed description of the invention in connection with the preferred embodiments, and it is not intended that the invention be limited to the specific embodiments described. It will be apparent to those skilled in the art that several simple deductions or substitutions may be made without departing from the spirit of the invention, and these should be considered to be within the scope of the invention.
Claims (4)
1. A method for video hardware decoding error recovery, the method comprising:
the method comprises the steps of distributing a unique output sequence number to coded data of each frame to be decoded, which is sent by a data application layer;
establishing a GOP buffer zone for buffering a GOP sequence being decoded by a current hardware decoder, wherein each frame of coded data in the GOP sequence comprises a data position and an output sequence number;
if the hardware decoder has errors, recording the output sequence number of the decoding data of the last frame when the errors occur;
resetting a hardware decoder, removing decoding related cache data on a current video memory and obtaining data in a GOP buffer area;
starting decoding from the first frame of encoded data in the GOP buffer zone, judging whether the output sequence number of the decoded video frame is equal to the output sequence number of the decoded data of the last frame when an error occurs in a hardware decoder, if so, sending the decoded data to display, and sending the data to be decoded of the next frame from a data application layer; if not, discarding the currently decoded video frame data, and continuing to decode the next frame data in the GOP buffer;
and judging whether the frame coding data is the first frame of one GOP or not according to the frame coding data to be decoded sent by the data application layer, if so, deleting one complete GOP data currently stored in the GOP buffer zone and storing the first frame coding data into the GOP buffer zone, and if not, directly storing the frame coding data into the GOP buffer zone and storing the data by using a linear data structure of a linked list.
2. A video hardware decoding error recovery system, the system comprising:
the output sequence number distribution module is used for distributing a unique output sequence number to each frame of coded data to be decoded, which is sent by the data application layer;
the GOP buffer storage module is used for establishing a GOP buffer for caching a GOP sequence being decoded by a current hardware decoder, wherein each frame of encoded data in the GOP sequence comprises a data position and an output sequence number;
the decoding error processing module is used for recording the output sequence number of the decoding data of the last frame when the error occurs to the hardware decoder; resetting a hardware decoder, removing decoding related cache data on a current video memory and obtaining data in a GOP buffer area; starting decoding from the first frame of encoded data in the GOP buffer zone, judging whether the output sequence number of the decoded video frame is equal to the output sequence number of the decoded data of the last frame when an error occurs in a hardware decoder, if so, sending the decoded data to display, and sending the data to be decoded of the next frame from a data application layer; if not, discarding the currently decoded video frame data, and continuing to decode the next frame data in the GOP buffer;
and the GOP buffer storage module judges whether the frame coding data is the first frame of a GOP for each frame coding data to be decoded, which is sent by the data application layer, if so, deleting one complete GOP data currently stored in the GOP buffer and storing the first frame coding data into the GOP buffer, and if not, directly storing the frame coding data into the GOP buffer and storing the data by using a linear data structure of a linked list.
3. An electronic device comprising a memory, a processor, and a computer program stored on the memory and executable on the processor, wherein the processor implements the method of video hardware decoding error recovery of claim 1 when the program is executed by the processor.
4. A non-transitory computer readable storage medium having stored thereon computer instructions that when executed by a processor implement the method of video hardware decoding error recovery of claim 1.
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