WO2017166587A1 - 音视频数据处理方法、装置以及车载终端 - Google Patents

音视频数据处理方法、装置以及车载终端 Download PDF

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Publication number
WO2017166587A1
WO2017166587A1 PCT/CN2016/096050 CN2016096050W WO2017166587A1 WO 2017166587 A1 WO2017166587 A1 WO 2017166587A1 CN 2016096050 W CN2016096050 W CN 2016096050W WO 2017166587 A1 WO2017166587 A1 WO 2017166587A1
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Prior art keywords
audio
video data
buffer queue
processing
circular buffer
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English (en)
French (fr)
Inventor
周星杰
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Baidu Online Network Technology Beijing Co Ltd
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Baidu Online Network Technology Beijing Co Ltd
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
    • H04N21/41—Structure of client; Structure of client peripherals
    • H04N21/414—Specialised client platforms, e.g. receiver in car or embedded in a mobile appliance
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
    • H04N21/41—Structure of client; Structure of client peripherals
    • H04N21/414—Specialised client platforms, e.g. receiver in car or embedded in a mobile appliance
    • H04N21/41407—Specialised client platforms, e.g. receiver in car or embedded in a mobile appliance embedded in a portable device, e.g. video client on a mobile phone, PDA, laptop
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
    • H04N21/43—Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
    • H04N21/439—Processing of audio elementary streams
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
    • H04N21/43—Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
    • H04N21/439—Processing of audio elementary streams
    • H04N21/4392—Processing of audio elementary streams involving audio buffer management
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
    • H04N21/43—Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
    • H04N21/44—Processing of video elementary streams, e.g. splicing a video clip retrieved from local storage with an incoming video stream or rendering scenes according to encoded video stream scene graphs
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
    • H04N21/43—Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
    • H04N21/44—Processing of video elementary streams, e.g. splicing a video clip retrieved from local storage with an incoming video stream or rendering scenes according to encoded video stream scene graphs
    • H04N21/44004—Processing of video elementary streams, e.g. splicing a video clip retrieved from local storage with an incoming video stream or rendering scenes according to encoded video stream scene graphs involving video buffer management, e.g. video decoder buffer or video display buffer
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
    • H04N21/43—Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
    • H04N21/442—Monitoring of processes or resources, e.g. detecting the failure of a recording device, monitoring the downstream bandwidth, the number of times a movie has been viewed, the storage space available from the internal hard disk
    • H04N21/44204—Monitoring of content usage, e.g. the number of times a movie has been viewed, copied or the amount which has been watched

Definitions

  • the present invention relates to the field of vehicle-mounted terminal technologies, and in particular, to an audio-video data processing method and apparatus, and an in-vehicle terminal.
  • the current vehicle terminal In the process of synchronously playing the multimedia information stream of the terminal device, the current vehicle terminal has a defect that the audio data is not continuously played and the screen does not jump due to the single-thread processing.
  • the object of the present invention is to solve at least one of the technical problems in the related art described above to some extent.
  • the first object of the present invention is to provide an audio and video data processing method, which improves the efficiency and quality of the in-vehicle terminal to simultaneously play the information of the terminal device, and improves the user experience.
  • a second object of the present invention is to provide an audio and video data processing apparatus.
  • a third object of the present invention is to provide an in-vehicle terminal.
  • a fourth object of the present invention is to provide a storage medium.
  • a fifth object of the present invention is to provide an in-vehicle terminal.
  • an embodiment of the present invention provides an audio and video data processing method, including the following steps: a receiving thread receives audio and video data sent by a terminal device connected in advance with an in-vehicle terminal, and the audio and video data is pre-emptive.
  • the first-out sequence is written to the preset circular buffer queue; the processing thread monitors the audio and video data writing of the circular buffer queue, and sequentially reads the audio and video data according to the audio and video data writing sequence in the circular buffer queue. , sent to the decoder for playback processing.
  • the audio and video data processing method provided in this embodiment introduces a circular buffer between a receiving thread and a processing thread.
  • the queue writes the audio and video data sent by the terminal device to the circular buffer queue in a predetermined order, and reads the audio and video data written into the circular buffer queue through the processing thread, and sends the audio and video data to the decoder for playback processing.
  • the efficiency and quality of the information of the terminal device synchronously playing the terminal device are improved, and the user experience is improved.
  • audio and video data processing method of the foregoing embodiment of the present invention may further have the following additional technical features:
  • the writing the audio and video data to the preset circular buffer queue in a first-in first-out order includes: writing the currently received audio and video data into the circular buffer queue, and incrementing The writing position of the next audiovisual data is such that the next received audiovisual data is written after the currently received audiovisual data.
  • the method further includes: the receiving thread sending a data write to the processing thread. And notifying the message, so that the processing thread monitors the audio and video data writing situation of the circular buffer queue according to the data writing notification message.
  • the audio and video data is sequentially read according to the audio and video data writing sequence in the circular buffer queue, and sent to the decoder for playing processing, including: determining the current in the circular buffer queue Whether the amount of audio and video data is greater than a preset threshold; if the current amount of audio and video data is greater than a preset threshold, the audio and video data of the preset bit amount is sequentially read according to the writing order of the audio and video data, and is sent to the decoder at one time. Playback processing.
  • the receiving thread has a higher processing priority than the processing thread.
  • the second aspect of the present invention provides an audio and video data processing apparatus, including: a receiving thread, a circular buffer queue, and a processing thread, wherein the receiving thread includes: a receiving module, configured to receive a connection with the vehicle terminal in advance The audio and video data sent by the terminal device; the writing module, configured to write the audio and video data into a preset circular buffer queue in a first-in first-out order; the processing thread includes: a monitoring module, configured to monitor the loop The audio and video data is written in the buffer queue; the processing module is configured to sequentially read the audio and video data according to the audio and video data writing sequence in the circular buffer queue, and send the data to the decoder for playing processing.
  • the receiving thread includes: a receiving module, configured to receive a connection with the vehicle terminal in advance The audio and video data sent by the terminal device; the writing module, configured to write the audio and video data into a preset circular buffer queue in a first-in first-out order; the processing thread includes: a monitoring module, configured to monitor the loop The audio and
  • the audio and video data processing apparatus provided in this embodiment, by introducing a circular buffer queue between the receiving thread and the processing thread, writes the audio and video data sent by the terminal device into the circular buffer queue in a predetermined order, and writes the loop through the processing thread.
  • the audio and video data of the buffer queue is read out and sent to the decoder for playback processing.
  • the efficiency and quality of the information of the terminal device synchronously playing the terminal device are improved, and the user experience is improved.
  • audio and video data processing apparatus of the above embodiment of the present invention may further have the following additional technical features:
  • the writing module is configured to write the currently received audio and video data into the circular buffer queue, and increment the writing position of the next audio and video data to make the next received sound.
  • the video data is written after the currently received audio and video data.
  • the receiving thread further includes: a notification module, configured to send a data write notification message to the processing thread, so that the processing thread monitors the data according to the data write notification message Cyclic buffer The audio and video data of the column is written.
  • a notification module configured to send a data write notification message to the processing thread, so that the processing thread monitors the data according to the data write notification message Cyclic buffer The audio and video data of the column is written.
  • the processing thread further includes: a determining module, configured to determine whether the current amount of audio and video data in the circular buffer queue is greater than a preset threshold; and the processing module is configured to: if current When the amount of audio and video data is greater than the preset threshold, the audio and video data of the preset bit amount is sequentially read according to the writing order of the audio and video data, and is sent to the decoder for playback processing at one time.
  • a determining module configured to determine whether the current amount of audio and video data in the circular buffer queue is greater than a preset threshold
  • the processing module is configured to: if current When the amount of audio and video data is greater than the preset threshold, the audio and video data of the preset bit amount is sequentially read according to the writing order of the audio and video data, and is sent to the decoder for playback processing at one time.
  • the receiving thread has a higher processing priority than the processing thread.
  • An embodiment of the third aspect of the present invention provides an in-vehicle terminal, comprising: the above audio and video data processing apparatus.
  • a storage medium for storing an application for performing an audio and video data processing method according to the first aspect of the present invention.
  • an in-vehicle terminal of an embodiment of the fifth aspect of the present invention includes: one or more processors; a memory; one or more modules, the one or more modules being stored in the memory, when When the one or more processors are executed, the following operations are performed: the receiving thread receives the audio and video data sent by the terminal device connected in advance with the in-vehicle terminal, and writes the audio and video data into the preset circular buffer queue in a first-in first-out order.
  • the processing thread monitors the audio and video data writing of the circular buffer queue, and sequentially reads the audio and video data according to the audio and video data writing sequence in the circular buffer queue, and sends the audio and video data to the decoder for playing processing.
  • FIG. 1 is a flow chart of a method for processing audio and video data according to an embodiment of the present invention
  • FIG. 2 is a schematic diagram of a circular buffer queue according to an embodiment of the present invention.
  • FIG. 3 is a flow chart of an audio and video data processing method according to an embodiment of the present invention.
  • FIG. 4 is a schematic structural diagram of an audio and video data processing apparatus according to an embodiment of the present invention.
  • FIG. 5 is a schematic structural diagram of an in-vehicle terminal according to an embodiment of the present invention.
  • FIG. 1 is a flow chart of a method of processing audio and video data in accordance with an embodiment of the present invention.
  • FIG. 2 is a schematic diagram of a circular buffer queue in accordance with an embodiment of the present invention.
  • the method includes the following steps:
  • the receiving thread receives the audio and video data sent by the terminal device connected in advance with the vehicle-mounted terminal, and writes the audio and video data into the preset circular buffer queue in a first-in first-out order.
  • the embodiment provided by the present invention is applied to an in-vehicle terminal having information of a synchronous playback terminal device.
  • a circular buffer queue is added.
  • the receiving thread After receiving the audio and video data sent by the terminal device, the receiving thread writes the received audio and video data into a preset circular buffer queue in a first-in first-out order. It should be noted that the currently received audio and video data is written into the circular buffer queue, and the writing position of the next audio and video data is automatically incremented, so that the next received audio and video data is written into the currently received audio and video data. . Therefore, the writing order of the audio and video data is first-in, first-out, and the processing thread can process the audio and video data in an orderly manner.
  • S102 The processing thread monitors the audio and video data writing of the circular buffer queue, and sequentially reads the audio and video data according to the audio and video data writing sequence in the circular buffer queue, and sends the audio and video data to the decoder for playing processing.
  • the processing thread writes the notification message according to the received data, and performs monitoring operation on the audio and video data written by the circular buffer queue.
  • the audio and video data is sequentially read in the order in which the audio and video data is written in the circular buffer queue. That is, the audio and video data is read from the queue head position of the circular buffer queue, and the read position is incremented. Therefore, it is ensured that the read audio and video data is read in the order in which the audio and video data is written.
  • the audio and video data in the circular buffer queue is read, it is sent to the decoder, and the corresponding playback processing is performed by the decoder.
  • the audio and video data processing method provided in this embodiment, by introducing a circular buffer queue between the receiving thread and the processing thread, writes the audio and video data sent by the terminal device into the circular buffer queue in a predetermined order, and processes the same.
  • the thread reads the audio and video data written to the circular buffer queue and sends it to the decoder for playback processing.
  • the efficiency and quality of the information of the terminal device synchronously playing the terminal device are improved, and the user experience is improved.
  • FIG. 3 is a flow chart of an audio and video data processing method in accordance with an embodiment of the present invention.
  • the audio and video data processing method includes the following steps:
  • the receiving thread receives the audio and video data sent by the terminal device connected to the vehicle terminal in advance, writes the audio and video data into a preset circular buffer queue in a first-in first-out order, and sends a data writing notification message to the processing thread.
  • the receiving thread After receiving the audio and video data sent by the terminal device, the receiving thread writes the received audio and video data into a preset circular buffer queue in a first-in first-out order. It should be noted that the currently received audio and video data is written into the circular buffer queue, and the writing position of the next audio and video data is automatically incremented, so that the next received audio and video data is written into the currently received audio and video data. . Therefore, the writing order of the audio and video data is first-in, first-out, and the processing thread can process the audio and video data in an orderly manner.
  • the receiving thread After the audio and video data sent by the terminal device is written into the circular buffer queue in a first-in first-out order, the receiving thread sends a data write notification message to the processing thread, so that the processing thread monitors the circular buffer queue according to the data write notification message. Audio and video data is written.
  • the data write notification message may include the amount of bits written by the data, or the number of frames. Of course, it can be other content, and will not be described in detail here.
  • S302 The processing thread monitors audio and video data writing of the circular buffer queue according to the data write notification message.
  • the processing thread performs a monitoring operation on the audio and video data written by the circular buffer queue according to the data writing notification message sent by the receiving thread.
  • S303 Determine whether the current amount of audio and video data in the cyclic buffer queue is greater than a preset threshold.
  • the preset threshold is a standard value for measuring the amount of audio data currently written by the circular buffer queue. Therefore, according to the preset threshold, it can be determined whether the current written audio data amount satisfies a preset condition, and if the preset condition is met, the corresponding processing is performed.
  • the queue header from the circular buffer queue is The position reads audio and video data and increments the reading position. Therefore, it is ensured that the read audio and video data is read in the order in which the audio and video data is written.
  • the decoder determines whether the audio and video data in the circular buffer queue has been completely read. If it is determined that the audio and video data in the circular buffer queue is read, all the audio and video data read is sent to the decoder at one time, and the corresponding playback processing is performed by the decoder.
  • the receiving thread and the processing thread shown in this embodiment are two threads of different priorities.
  • the processing priority of the receiving thread is higher than the processing priority of the processing thread.
  • the receiving thread after receiving the audio and video data and writing to the circular buffer queue, the receiving thread sends a data write notification.
  • the processing thread is processed; the processing thread performs corresponding audio and video data processing after receiving the data writing notification message.
  • the receiving thread has a fast processing speed and can be set as a high-priority thread, thereby ensuring that audio and video data is acquired in real time and written into the circular buffer queue and occupying a short CPU time; the processing thread takes a long time and can be set to a low priority. Avoid reading audio and video data delays.
  • the audio and video data processing method provided in this embodiment, by introducing a circular buffer queue between the receiving thread and the processing thread, writes the audio and video data sent by the terminal device into the circular buffer queue in a predetermined order, and writes the loop through the processing thread.
  • the audio and video data of the buffer queue is read out and sent to the decoder for playback processing.
  • the efficiency and quality of the information of the terminal device synchronously playing the terminal device are further improved, and the synchronization of the audio and video data is ensured, thereby improving the user experience.
  • the apparatus 10 includes a receiving thread 100, a circular buffer queue 200, and a processing thread 300.
  • the receiving thread 100 includes: a receiving module 110, a writing module 120, and a notification module 130.
  • the receiving module 110 is configured to receive audio and video data sent by the terminal device that is connected to the in-vehicle terminal in advance; the writing module 120 is configured to write the audio and video data into a preset circular buffer queue in a first-in first-out order; the writing The ingress module 120 is configured to write the currently received audio and video data into the circular buffer queue, and increment the writing position of the next audio and video data so that the next received audio and video data is written after the currently received audio and video data.
  • the notification module 130 is configured to send a data write notification message to the processing thread, so that the processing thread monitors an audio and video data write situation of the circular buffer queue according to the data write notification message.
  • the embodiment provided by the present invention is applied to an in-vehicle terminal having information of a synchronous playback terminal device.
  • a circular buffer queue is added.
  • the receiving thread After receiving the audio and video data sent by the terminal device, the receiving thread writes the received audio and video data into a preset circular buffer queue in a first-in first-out order. It should be noted that the currently received audio and video data is written into the circular buffer queue, and the writing position of the next audio and video data is automatically incremented, so that the next received audio and video data is written into the currently received audio and video data. . Therefore, the writing order of the audio and video data is first-in, first-out, and the processing thread can process the audio and video data in an orderly manner.
  • the receiving thread After the audio and video data sent by the terminal device is written into the circular buffer queue in a first-in first-out order, the receiving thread sends a data write notification message to the processing thread, so that the processing thread monitors the circular buffer queue according to the data write notification message. Audio and video data is written.
  • the data write notification message may include the amount of bits written by the data, or the number of frames. Of course, it can be other content, and will not be described in detail here.
  • the processing thread 300 includes a monitoring module 310, a processing module 320, and a determining module 330.
  • the monitoring module 310 is configured to monitor audio and video data writing of the circular buffer queue.
  • the processing module 320 is configured to sequentially read the audio and video data according to the audio and video data writing sequence in the circular buffer queue, and send the data to the decoder for playing processing.
  • the processing module 320 is further configured to sequentially read the audio and video data of the preset bit amount according to the writing order of the audio and video data, and send the audio and video data of the preset bit amount to the decoder for playing processing, if the current audio and video data amount is greater than the preset threshold.
  • the determining module 330 is configured to determine whether the current amount of audio and video data in the circular buffer queue is greater than a preset threshold;
  • the processing thread performs a monitoring operation on the audio and video data written by the circular buffer queue according to the data writing notification message sent by the receiving thread.
  • the preset threshold is a standard value for measuring the amount of audio data currently written by the circular buffer queue. Therefore, according to the preset threshold, it can be determined whether the current written audio data amount satisfies a preset condition, and if the preset condition is met, the corresponding processing is performed.
  • the queue head position of the cyclic buffer queue is read. Audio and video data and increment the reading position. Therefore, it is ensured that the read audio and video data is read in the order in which the audio and video data is written.
  • the decoder determines whether the audio and video data in the circular buffer queue has been completely read. If it is determined that the audio and video data in the circular buffer queue is read, all the audio and video data read is sent to the decoder at one time, and the corresponding playback processing is performed by the decoder.
  • the receiving thread and the processing thread shown in this embodiment are two threads of different priorities.
  • the processing priority of the receiving thread is higher than the processing priority of the processing thread.
  • the receiving thread after receiving the audio and video data and writing to the circular buffer queue, the receiving thread sends a data write notification message to the processing thread; the processing thread performs the corresponding audio and video data processing after receiving the data write notification message.
  • the receiving thread has a fast processing speed and can be set as a high-priority thread, thereby ensuring that audio and video data is acquired in real time and written into the circular buffer queue and occupying a short CPU time; the processing thread takes a long time and can be set to a low priority. Avoid reading audio and video data delays.
  • the audio and video data processing apparatus provided in this embodiment, by introducing a circular buffer queue between the receiving thread and the processing thread, writes the audio and video data sent by the terminal device into the circular buffer queue in a predetermined order, and processes the same.
  • the thread reads the audio and video data written to the circular buffer queue and sends it to the decoder for playback processing.
  • the efficiency and quality of the information of the terminal device synchronously playing the terminal device are improved, and the user experience is improved.
  • the in-vehicle terminal 1 includes the above-described audio and video data processing device 10.
  • the in-vehicle terminal introduces a loop buffer queue between the receiving thread and the processing thread, and writes the audio and video data sent by the terminal device into the circular buffer queue in a predetermined order, and slows the writing cycle through the processing thread.
  • the audio and video data of the rush queue is read out and sent to the decoder for playback processing.
  • the efficiency and quality of the information of the terminal device synchronously playing the terminal device are improved, and the user experience is improved.
  • the present invention also provides a storage medium for storing an application for performing an audio and video data processing method according to any of the embodiments of the present invention.
  • the present invention also provides an in-vehicle terminal comprising: one or more processors; a memory; one or more modules, one or more modules stored in the memory, when processed by one or more When the device is executed, do the following:
  • the receiving thread receives the audio and video data sent by the terminal device connected in advance with the in-vehicle terminal, and writes the audio and video data into the preset circular buffer queue in a first-in first-out order.
  • S102' the processing thread monitors the audio and video data writing of the circular buffer queue, and sequentially reads the audio and video data according to the audio and video data writing sequence in the circular buffer queue, and sends the audio and video data to the decoder for playing processing.
  • portions of the invention may be implemented in hardware, software, firmware or a combination thereof.
  • multiple steps or methods may be implemented in software or firmware stored in a memory and executed by a suitable instruction execution system.
  • a suitable instruction execution system For example, if implemented in hardware, as in another embodiment, it can be implemented by any one or combination of the following techniques well known in the art: having logic gates for implementing logic functions on data signals. Discrete logic circuits, application specific integrated circuits with suitable combinational logic gates, programmable gate arrays (PGAs), field programmable gate arrays (FPGAs), etc.

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  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Databases & Information Systems (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • General Engineering & Computer Science (AREA)
  • Signal Processing For Digital Recording And Reproducing (AREA)
  • Two-Way Televisions, Distribution Of Moving Picture Or The Like (AREA)

Abstract

本发明公开了一种音视频数据处理方法、装置以及车载终端，其中方法包括以下步骤：接收线程接收预先与车载终端连接的终端设备发送的音视频数据，将所述音视频数据按照先入先出的顺序写入预设的循环缓冲队列；处理线程监测所述循环缓冲队列的音视频数据写入情况，并按照所述循环缓冲队列中的音视频数据写入顺序依次读取音视频数据，发送给解码器进行播放处理。从而提高了车载终端同步播放终端设备信息的效率和质量，提升用户体验。

Description

音视频数据处理方法、装置以及车载终端
相关申请的交叉引用
本申请要求百度在线网络技术(北京)有限公司于2016年03月31日提交的、发明名称为“音视频数据处理方法、装置以及车载终端”的、中国专利申请号“201610201410.1”的优先权。
技术领域
本发明涉及车载终端技术领域，特别涉及一种音视频数据处理方法、装置以及车载终端。
背景技术
随着终端设备的普及，发展和利用终端设备与车机互联技术，实现应用共享、屏幕互动等实用功能成为了众多车厂和车载电子设备商的研究热点。
目前的车载终端在同步播放终端设备多媒体信息流的过程中，由于是单线程处理，导致音频数据播放不连续、画面会出现不跳变的缺陷。
发明内容
本发明的目的旨在至少在一定程度上解决上述相关技术中的技术问题之一。
为此，本发明的第一个目的在于提出一种音视频数据处理方法，该方法提高了车载终端同步播放终端设备信息的效率和质量，提升用户体验。
本发明的第二个目的在于提出一种音视频数据处理装置。
本发明的第三个目的在于提出一种车载终端。
本发明的第四个目的在于提出一种存储介质。
本发明的第五个目的在于提出一种车载终端。
为达到上述目的，本发明一方面实施例提出了一种音视频数据处理方法，包括以下步骤：接收线程接收预先与车载终端连接的终端设备发送的音视频数据，将所述音视频数据按照先入先出的顺序写入预设的循环缓冲队列；处理线程监测所述循环缓冲队列的音视频数据写入情况，并按照所述循环缓冲队列中的音视频数据写入顺序依次读取音视频数据，发送给解码器进行播放处理。
本实施例提供的音视频数据处理方法，通过在接收线程和处理线程之间引入循环缓冲 队列，将终端设备发送的音视频数据按照预定顺序写入循环缓冲队列，并通过处理线程将写入循环缓冲队列的音视频数据读取出来，发送给解码器进行播放处理。提高了车载终端同步播放终端设备信息的效率和质量，提升用户体验。
另外，本发明上述实施例的音视频数据处理方法还可以具有如下附加的技术特征：
在本发明的一个实施例中，所述将所述音视频数据按照先入先出的顺序写入预设的循环缓冲队列，包括：将当前接收的音视频数据写入所述循环缓冲队列，递增下一个音视频数据的写入位置，以使下一个接收的音视频数据写入当前接收的音视频数据之后。
在本发明的一个实施例中，在所述将所述音视频数据按照先入先出的顺序写入预设的循环缓冲队列之后，还包括：所述接收线程向所述处理线程发送数据写入通知消息，以使所述处理线程根据所述数据写入通知消息监测所述循环缓冲队列的音视频数据写入情况。
在本发明的一个实施例中，所述按照所述循环缓冲队列中的音视频数据写入顺序依次读取音视频数据，发送给解码器进行播放处理，包括：判断所述循环缓冲队列中当前的音视频数据量是否大于预设阈值；如果当前的音视频数据量大于预设阈值，则按照音视频数据的写入顺序依次读取预设比特量的音视频数据，一次性发送到解码器进行播放处理。
在本发明的一个实施例中，所述接收线程的处理优先级高于所述处理线程。
本发明第二方面实施例提出了一种音视频数据处理装置，包括：接收线程、循环缓冲队列、以及处理线程，其中，所述接收线程包括：接收模块，用于接收预先与车载终端连接的终端设备发送的音视频数据；写入模块，用于将所述音视频数据按照先入先出的顺序写入预设的循环缓冲队列；所述处理线程包括：监测模块，用于监测所述循环缓冲队列的音视频数据写入情况；处理模块，用于按照所述循环缓冲队列中的音视频数据写入顺序依次读取音视频数据，发送给解码器进行播放处理。
本实施例提供的音视频数据处理装置，通过在接收线程和处理线程之间引入循环缓冲队列，将终端设备发送的音视频数据按照预定顺序写入循环缓冲队列，并通过处理线程将写入循环缓冲队列的音视频数据读取出来，发送给解码器进行播放处理。提高了车载终端同步播放终端设备信息的效率和质量，提升用户体验。
另外，本发明上述实施例的音视频数据处理装置还可以具有如下附加的技术特征：
在本发明的一个实施例中，所述写入模块，用于将当前接收的音视频数据写入所述循环缓冲队列，递增下一个音视频数据的写入位置，以使下一个接收的音视频数据写入当前接收的音视频数据之后。
在本发明的一个实施例中，所述接收线程还包括：通知模块，用于向所述处理线程发送数据写入通知消息，以使所述处理线程根据所述数据写入通知消息监测所述循环缓冲队 列的音视频数据写入情况。
在本发明的一个实施例中，所述处理线程还包括：判断模块，用于判断所述循环缓冲队列中当前的音视频数据量是否大于预设阈值；所述处理模块，用于如果当前的音视频数据量大于预设阈值，则按照音视频数据的写入顺序依次读取预设比特量的音视频数据，一次性发送到解码器进行播放处理。
在本发明的一个实施例中，所述接收线程的处理优先级高于所述处理线程。
本发明第三方面实施例提出了一种车载终端，包括：上述音视频数据处理装置。
为了实现上述目的，本发明第四方面实施例的存储介质，用于存储应用程序，所述应用程序用于执行本发明第一方面实施例所述的音视频数据处理方法。
为了实现上述目的，本发明第五方面实施例的车载终端，包括：一个或者多个处理器；存储器；一个或者多个模块，所述一个或者多个模块存储在所述存储器中，当被所述一个或者多个处理器执行时进行如下操作：接收线程接收预先与车载终端连接的终端设备发送的音视频数据，将所述音视频数据按照先入先出的顺序写入预设的循环缓冲队列；处理线程监测所述循环缓冲队列的音视频数据写入情况，并按照所述循环缓冲队列中的音视频数据写入顺序依次读取音视频数据，发送给解码器进行播放处理。
本发明附加的方面和优点将在下面的描述中部分给出，部分将从下面的描述中变得明显，或通过本发明的实践了解到。
附图说明
本发明的上述和/或附加的方面和优点从结合下面附图对实施例的描述中将变得明显和容易理解，其中：
图1是根据本发明实施例的音视频数据处理方法的流程图；
图2是根据本发明实施例的循环缓冲队列的示意图；
图3是根据本发明实施例的一个音视频数据处理方法的流程图；
图4是根据本发明实施例的音视频数据处理装置的结构示意图；
图5是根据本发明实施例的一个车载终端的结构示意图。
具体实施方式
下面详细描述本发明的实施例，所述实施例的示例在附图中示出，其中自始至终相同或类似的标号表示相同或类似的元件或具有相同或类似功能的元件。下面通过参考附图描述的实施例是示例性的，旨在用于解释本发明，而不能理解为对本发明的限制。
下面参照附图描述根据本发明实施例提出的音视频数据处理方法、装置以及车载终端。
图1是根据本发明实施例的音视频数据处理方法的流程图。
图2是根据本发明实施例的循环缓冲队列的示意图。
参见图1和图2，该方法包括以下步骤：
S101：接收线程接收预先与车载终端连接的终端设备发送的音视频数据，将音视频数据按照先入先出的顺序写入预设的循环缓冲队列。
具体地，本发明提供的实施例应用于具有同步播放终端设备信息的车载终端上。为了提高车载终端同步播放终端设备信息的效率和质量，增加循环缓冲队列。
接收线程接收到终端设备发送的音视频数据后，将接收的音视频数据按照先入先出的顺序写入预设的循环缓冲队列。其中，需要说明的是，将当前接收的音视频数据写入循环缓冲队列，自动递增下一个音视频数据的写入位置，以使下一个接收的音视频数据写入当前接收的音视频数据之后。从而满足音视频数据先入先出的写入顺序，便于处理线程对音视频数据进行有序处理。
S102：处理线程监测循环缓冲队列的音视频数据写入情况，并按照循环缓冲队列中的音视频数据写入顺序依次读取音视频数据，发送给解码器进行播放处理。
具体地，处理线程根据接收的数据写入通知消息，对循环缓冲队列写入的音视频数据进行监测操作。当监测到循环缓冲队列写入的音频数据满足读取音视频数据条件时，按照循环缓冲队列中音视频数据写入顺序依次读取音视频数据。即就是，从循环缓冲队列的队列头位置读取音视频数据，并递增读取位置。从而保证读取音视频数据是按照音视频数据写入的顺序进行读取。
在将循环缓冲队列中的音视频数据读取后，发送给解码器，通过解码器对其进行相应播放处理。
其中，需要注意的是，在将读取的音视频数据发送给解码器时，需要按照先入先出顺序送入解码器中，保证解码器中实时有数据可以处理，使得音视频播放具有连贯性,不出现卡顿的情况。
综上所述，本实施例提供的音视频数据处理方法，通过在接收线程和处理线程之间引入循环缓冲队列，将终端设备发送的音视频数据按照预定顺序写入循环缓冲队列，并通过处理线程将写入循环缓冲队列的音视频数据读取出来，发送给解码器进行播放处理。提高了车载终端同步播放终端设备信息的效率和质量，提升用户体验。
图3是根据本发明实施例的一个音视频数据处理方法的流程图。
参见图3，该音视频数据处理方法包括以下步骤：
S301：接收线程接收预先与车载终端连接的终端设备发送的音视频数据，将音视频数据按照先入先出的顺序写入预设的循环缓冲队列，向所述处理线程发送数据写入通知消息。
具体地，接收线程接收到终端设备发送的音视频数据后，将接收的音视频数据按照先入先出的顺序写入预设的循环缓冲队列。其中，需要说明的是，将当前接收的音视频数据写入循环缓冲队列，自动递增下一个音视频数据的写入位置，以使下一个接收的音视频数据写入当前接收的音视频数据之后。从而满足音视频数据先入先出的写入顺序，便于处理线程对音视频数据进行有序处理。
在将终端设备发送的音视频数据按照先入先出的顺序写入循环缓冲队列之后，接收线程会向处理线程发送数据写入通知消息，以使处理线程根据数据写入通知消息监测循环缓冲队列的音视频数据写入情况。其中，数据写入通知消息可以包括，数据写入的比特量，或者帧数。当然还可以是其他内容，在此不对其进行详细赘述。
S302：处理线程根据所述数据写入通知消息监测所述循环缓冲队列的音视频数据写入情况。
其中，处理线程是根据接收到接收线程发送的数据写入通知消息，对循环缓冲队列写入的音视频数据进行监测操作。
S303：判断循环缓冲队列中当前的音视频数据量是否大于预设阈值。
其中，需要说明的是，预设阈值是对循环缓冲队列当前写入音频数据量进行衡量的一个标准值。从而根据预设阈值就可确定出当前写入音频数据量是否满足预设条件，如果满足预设条件，则进行相应处理。
S304：如果当前的音视频数据量大于预设阈值，则按照音视频数据的写入顺序依次读取预设比特量的音视频数据，一次性发送到解码器进行播放处理。
具体的，当判断出循环缓冲队列中当前的音视频数据量大于预设阈值，即就是，监测到循环缓冲队列写入的音频数据满足读取音视频数据条件，则从循环缓冲队列的队列头位置读取音视频数据，并递增读取位置。从而保证读取音视频数据是按照音视频数据写入的顺序进行读取。
进一步地，判断循环缓冲队列中的音视频数据是否已全部读完。如果判断出循环缓冲队列中的音视频数据读取完成，则将读取的所有音视频数据一次性发送给解码器，通过解码器对其进行相应播放处理。
需要注意的是，本实施例所示出的接收线程与处理线程是不同优先级的两个线程。其中，接收线程的处理优先级高于处理线程的处理优先级。
具体地，接收线程在接收音视频数据并写入循环缓冲队列后，会发送数据写入通知消 息给处理线程；处理线程在收到有数据写入通知消息后才进行对应的音视频数据处理。同时，接收线程的处理速度快，可以设置为高优先级的线程，从而保证实时获取音视频数据并写入循环缓冲队列且占用CPU时间短；处理线程耗时长，可以设置为低优先级，从而避免读取音视频数据延时。
本实施例提供的音视频数据处理方法，通过在接收线程和处理线程之间引入循环缓冲队列，将终端设备发送的音视频数据按照预定顺序写入循环缓冲队列，并通过处理线程将写入循环缓冲队列的音视频数据读取出来，发送给解码器进行播放处理。进一步地提高了车载终端同步播放终端设备信息的效率和质量，以及保证了音视频数据的同步，提升用户体验。
下面参照附图描述根据本发明实施例提出的音视频数据处理装置。参照图4所示，该装置10包括接收线程100、循环缓冲队列200，以及处理线程300。
具体地，接收线程100包括：接收模块110、写入模块120和通知模块130。
接收模块110用于接收预先与车载终端连接的终端设备发送的音视频数据；写入模块120用于将所述音视频数据按照先入先出的顺序写入预设的循环缓冲队列；所述写入模块120用于将当前接收的音视频数据写入所述循环缓冲队列，递增下一个音视频数据的写入位置，以使下一个接收的音视频数据写入当前接收的音视频数据之后。通知模块130用于向所述处理线程发送数据写入通知消息，以使所述处理线程根据所述数据写入通知消息监测所述循环缓冲队列的音视频数据写入情况。
具体地，本发明提供的实施例应用于具有同步播放终端设备信息的车载终端上。为了提高车载终端同步播放终端设备信息的效率和质量，增加循环缓冲队列。
接收线程接收到终端设备发送的音视频数据后，将接收的音视频数据按照先入先出的顺序写入预设的循环缓冲队列。其中，需要说明的是，将当前接收的音视频数据写入循环缓冲队列，自动递增下一个音视频数据的写入位置，以使下一个接收的音视频数据写入当前接收的音视频数据之后。从而满足音视频数据先入先出的写入顺序，便于处理线程对音视频数据进行有序处理。
在将终端设备发送的音视频数据按照先入先出的顺序写入循环缓冲队列之后，接收线程会向处理线程发送数据写入通知消息，以使处理线程根据数据写入通知消息监测循环缓冲队列的音视频数据写入情况。其中，数据写入通知消息可以包括，数据写入的比特量，或者帧数。当然还可以是其他内容，在此不对其进行详细赘述。
处理线程300包括：监测模块310、处理模块320和判断模块330。
其中，监测模块310用于监测所述循环缓冲队列的音视频数据写入情况；
处理模块320用于按照所述循环缓冲队列中的音视频数据写入顺序依次读取音视频数据，发送给解码器进行播放处理。处理模块320还用于如果当前的音视频数据量大于预设阈值，则按照音视频数据的写入顺序依次读取预设比特量的音视频数据，一次性发送到解码器进行播放处理。判断模块330用于判断所述循环缓冲队列中当前的音视频数据量是否大于预设阈值；
具体地，处理线程是根据接收到接收线程发送的数据写入通知消息，对循环缓冲队列写入的音视频数据进行监测操作。需要说明的是，预设阈值是对循环缓冲队列当前写入音频数据量进行衡量的一个标准值。从而根据预设阈值就可确定出当前写入音频数据量是否满足预设条件，如果满足预设条件，则进行相应处理。
当判断出循环缓冲队列中当前的音视频数据量大于预设阈值，即就是，监测到循环缓冲队列写入的音频数据满足读取音视频数据条件，则从循环缓冲队列的队列头位置读取音视频数据，并递增读取位置。从而保证读取音视频数据是按照音视频数据写入的顺序进行读取。
进一步地，判断循环缓冲队列中的音视频数据是否已全部读完。如果判断出循环缓冲队列中的音视频数据读取完成，则将读取的所有音视频数据一次性发送给解码器，通过解码器对其进行相应播放处理。
需要注意的是，本实施例所示出的接收线程与处理线程是不同优先级的两个线程。其中，接收线程的处理优先级高于处理线程的处理优先级。
具体地，接收线程在接收音视频数据并写入循环缓冲队列后，会发送数据写入通知消息给处理线程；处理线程在收到有数据写入通知消息后才进行对应的音视频数据处理。同时，接收线程的处理速度快，可以设置为高优先级的线程，从而保证实时获取音视频数据并写入循环缓冲队列且占用CPU时间短；处理线程耗时长，可以设置为低优先级，从而避免读取音视频数据延时。
综上所述，本实施例提供的音视频数据处理装置，通过在接收线程和处理线程之间引入循环缓冲队列，将终端设备发送的音视频数据按照预定顺序写入循环缓冲队列，并通过处理线程将写入循环缓冲队列的音视频数据读取出来，发送给解码器进行播放处理。提高了车载终端同步播放终端设备信息的效率和质量，提升用户体验。
下面参照附图描述根据本发明实施例提出的车载终端。
参照图5所示，该车载终端1包括：上述音视频数据处理装置10。
本实施例提供的车载终端，通过在接收线程和处理线程之间引入循环缓冲队列，将终端设备发送的音视频数据按照预定顺序写入循环缓冲队列，并通过处理线程将写入循环缓 冲队列的音视频数据读取出来，发送给解码器进行播放处理。提高了车载终端同步播放终端设备信息的效率和质量，提升用户体验。
为了实现上述实施例，本发明还提出了一种存储介质，用于存储应用程序，该应用程序用于执行本发明任一个实施例所述的音视频数据处理方法。
为了实现上述实施例，本发明还提出了一种车载终端，包括：一个或者多个处理器；存储器；一个或者多个模块，一个或者多个模块存储在存储器中，当被一个或者多个处理器执行时进行如下操作：
S101'：接收线程接收预先与车载终端连接的终端设备发送的音视频数据，将音视频数据按照先入先出的顺序写入预设的循环缓冲队列。
S102'：处理线程监测循环缓冲队列的音视频数据写入情况，并按照循环缓冲队列中的音视频数据写入顺序依次读取音视频数据，发送给解码器进行播放处理。
应当理解，本发明的各部分可以用硬件、软件、固件或它们的组合来实现。在上述实施方式中，多个步骤或方法可以用存储在存储器中且由合适的指令执行系统执行的软件或固件来实现。例如，如果用硬件来实现，和在另一实施方式中一样，可用本领域公知的下列技术中的任一项或他们的组合来实现：具有用于对数据信号实现逻辑功能的逻辑门电路的离散逻辑电路，具有合适的组合逻辑门电路的专用集成电路，可编程门阵列(PGA)，现场可编程门阵列(FPGA)等。
本技术领域的普通技术人员可以理解实现上述实施例方法携带的全部或部分步骤是可以通过程序来指令相关的硬件完成，所述的程序可以存储于一种计算机可读存储介质中，该程序在执行时，包括方法实施例的步骤之一或其组合。
尽管上面已经示出和描述了本发明的实施例，可以理解的是，上述实施例是示例性的，不能理解为对本发明的限制，本领域的普通技术人员在不脱离本发明的原理和宗旨的情况下在本发明的范围内可以对上述实施例进行变化、修改、替换和变型。

Claims (13)

  1. 一种音视频数据处理方法，其特征在于，包括以下步骤：
    接收线程接收预先与车载终端连接的终端设备发送的音视频数据，将所述音视频数据按照先入先出的顺序写入预设的循环缓冲队列；
    处理线程监测所述循环缓冲队列的音视频数据写入情况，并按照所述循环缓冲队列中的音视频数据写入顺序依次读取音视频数据，发送给解码器进行播放处理。
  2. 如权利要求1所述的方法，其特征在于，所述将所述音视频数据按照先入先出的顺序写入预设的循环缓冲队列，包括：
    将当前接收的音视频数据写入所述循环缓冲队列，递增下一个音视频数据的写入位置，以使下一个接收的音视频数据写入当前接收的音视频数据之后。
  3. 如权利要求1-2任一项所述的方法，其特征在于，在所述将所述音视频数据按照先入先出的顺序写入预设的循环缓冲队列之后，还包括：
    所述接收线程向所述处理线程发送数据写入通知消息，以使所述处理线程根据所述数据写入通知消息监测所述循环缓冲队列的音视频数据写入情况。
  4. 如权利要求1-3任一项所述的方法，其特征在于，所述按照所述循环缓冲队列中的音视频数据写入顺序依次读取音视频数据，发送给解码器进行播放处理，包括：
    判断所述循环缓冲队列中当前的音视频数据量是否大于预设阈值；
    如果当前的音视频数据量大于预设阈值，则按照音视频数据的写入顺序依次读取预设比特量的音视频数据，一次性发送到解码器进行播放处理。
  5. 如权利要求1-4任一项所述的方法，其特征在于，所述接收线程的处理优先级高于所述处理线程。
  6. 一种音视频数据处理装置，其特征在于，包括：接收线程、循环缓冲队列、以及处理线程，其中，
    所述接收线程包括：
    接收模块，用于接收预先与车载终端连接的终端设备发送的音视频数据；
    写入模块，用于将所述音视频数据按照先入先出的顺序写入预设的循环缓冲队列；
    所述处理线程包括：
    监测模块，用于监测所述循环缓冲队列的音视频数据写入情况；
    处理模块，用于按照所述循环缓冲队列中的音视频数据写入顺序依次读取音视频数据，发送给解码器进行播放处理。
  7. 如权利要求6所述的装置，其特征在于，
    所述写入模块，用于将当前接收的音视频数据写入所述循环缓冲队列，递增下一个音视频数据的写入位置，以使下一个接收的音视频数据写入当前接收的音视频数据之后。
  8. 如权利要求6-7任一项所述的装置，其特征在于，所述接收线程还包括：
    通知模块，用于向所述处理线程发送数据写入通知消息，以使所述处理线程根据所述数据写入通知消息监测所述循环缓冲队列的音视频数据写入情况。
  9. 如权利要求6-8任一项所述的装置，其特征在于，所述处理线程还包括：
    判断模块，用于判断所述循环缓冲队列中当前的音视频数据量是否大于预设阈值；
    所述处理模块，用于如果当前的音视频数据量大于预设阈值，则按照音视频数据的写入顺序依次读取预设比特量的音视频数据，一次性发送到解码器进行播放处理。
  10. 如权利要求6-9任一项所述的装置，其特征在于，所述接收线程的处理优先级高于所述处理线程。
  11. 一种车载终端，其特征在于，包括：如权利要求6-10任一项所述的音视频数据处理装置。
  12. 一种存储介质，其特征在于，用于存储应用程序，所述应用程序用于执行权利要求1至5中任一项所述的音视频数据处理方法。
  13. 一种车载终端，其特征在于，包括：
    一个或者多个处理器；
    存储器；
    一个或者多个模块，所述一个或者多个模块存储在所述存储器中，当被所述一个或者多个处理器执行时进行如下操作：
    接收线程接收预先与车载终端连接的终端设备发送的音视频数据，将所述音视频数据按照先入先出的顺序写入预设的循环缓冲队列；
    处理线程监测所述循环缓冲队列的音视频数据写入情况，并按照所述循环缓冲队列中的音视频数据写入顺序依次读取音视频数据，发送给解码器进行播放处理。
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