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Audio track switching method and system of multimedia player, and corresponding player and device

A multimedia player and switching system technology, applied in the field of audio track switching of multimedia players, can solve the problems of low buffer utilization rate and inability to solve the problem of low buffer buffer utilization rate

Active Publication Date: 2017-06-30
ALLWINNER TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This method can solve the above-mentioned problem of staccato audio track switching, but it cannot solve the problem of low buffer buffer utilization. On the contrary, the more buffers are applied for by this method, the lower the buffer utilization.

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  • Audio track switching method and system of multimedia player, and corresponding player and device
  • Audio track switching method and system of multimedia player, and corresponding player and device

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Experimental program
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Embodiment Construction

[0056] refer to figure 1 As shown, the present invention provides a kind of audio track switching method of multimedia player, comprising:

[0057] (1) Create the same number of first-in-first-out data management modules StreamManager[n-1] according to the total number n of audio tracks contained in the code stream, and the data management module StreamManager[n-1] is used for audio data storage management;

[0058] (2) For the audio data transmitted by the data analysis terminal, according to the audio track index value m corresponding to the audio data, write the audio data into the corresponding StreamManager[m], where 0<=m<n;

[0059] (3) When the user is playing, if the audio track index value of the audio data currently to be played selected by the user is i, assign the variable k that records the current audio track index value to i, and read the corresponding audio data from StreamManager[k] , and transmit the read audio data to the audio decoding module for decoding...

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Abstract

The invention discloses a method and system for switching audio tracks of a multimedia player, and a corresponding player and equipment. The method creates a first-in-first-out data management module with the same number of audio tracks; According to the corresponding audio track index value, write the audio data into the corresponding data management module; then, when the user plays, assign the variable that records the current audio track index value to the audio data of the audio data that needs to be played currently. The track index value is used to read the corresponding audio data from the data management module, and transmit the read audio data to the audio decoding module for decoding and playback; after that, clear outdated audio data in each data management module. The invention can save multi-channel audio data in a small memory space and realize seamless switching of audio tracks.

Description

technical field [0001] The invention relates to the field of data storage, in particular to a method and system for switching audio tracks of a multimedia player, and a corresponding player and equipment. Background technique [0002] During multimedia playback, how to realize seamless switching of audio is a difficult problem faced by users. Therefore, in order to store and manage multi-channel audio data, an efficient and practical data storage method must be adopted. [0003] There are two main types of existing audio track switching technologies. One is to only transfer the currently playing audio data to the audio buffer buffer. Audio data for the track. However, during the playback process, in order to ensure the smoothness of audio playback, the data analysis end will send the data into the audio buffer buffer in advance (usually 2s in advance). After the audio track is cut in this way, the new buffer data in the buffer corresponds to The playback time will be 2s l...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G11B27/10G11B20/10
Inventor 刘小燕陈小川
Owner ALLWINNER TECH CO LTD