Method for playing multimedia file of a master controller side and mobile termination

Abstract

The invention relates to the multimedia technology and discloses a method for playing a multimedia file of a master controller side and a mobile termination. A first in first out memory location is arranged in a coprocessor, the multimedia file data of the master controller side is read into the first in first out memory location step by step so as to use a playing mechanism playing the multimedia file of the coprocessor side in the coprocessor, and the playing of the multimedia file of the master controller side is realized by reading the data in the first in first out memory location, thus simplifying the playing procedure, being convenient for management and increasing the reliability and maintainability.

Description

technical field [0001] The invention relates to multimedia technology, in particular to a playing technology of multimedia files on the main controller side. Background technique [0002] With the popularization of network streaming media and large-capacity mobile terminals, more and more users start to use mobile terminals to watch online multimedia files in the network or watch locally stored multimedia files. [0003] In current mobile terminals, generally there is a main controller and a coprocessor, and the two are connected through a BIU (Bus Interface Unit, Bus Interface Unit) bus. The main controller is mainly used to be responsible for the communication function of the mobile terminal. The playback of multimedia files is performed by the coprocessor. In the coprocessor, there is a complete set of playback mechanism for playing multimedia files stored in the coprocessor or the memory card connected to the coprocessor side. However, the coprocessor is a passive proce...

AI Technical Summary

Problems solved by technology

[0003] In current mobile terminals, generally there is a main controller and a coprocessor, and the two are connected through a BIU (Bus Interface Unit, Bus Interface Unit) bus. The main controller is mainly used to be responsible for the communication function of the mobile terminal. The playback of multimedia files is performed by the coprocessor. In the coprocessor, there is a complete set of playback mechanism for playing multimedia files stored in the coprocessor or the memory card connected to the coprocessor side. However, the coprocessor is a passive processor on the main controller bus, so it cannot directly read the data on the main controller side. In this way, when it is necessary to play the multimedia files in the network streaming media received by the main controller , or when it is necessary to play the multimedia files stored in the main controller or stored in the memory card connected to the main controller side, another set of playback mechanism is needed to read the multimedia file data. In the prior art, the main Use ping-pong transmission to transmit multimedia file data to the coprocessor. Because ping-pong transmission uses two buffers, the main controller and the coprocessor perform alternate access. If the main processor sends data to the coprocessor, the main The controller alternately writes data to the two buffers, and the coprocessor also reads out alternately. Both parties read and write in the same order as agreed to ensure the order of data transmission. At the same time, both parties do not operate a buffer at the same time to avoid Cause access conflicts, although this playback mechanism achieves the purpose of playing multimedia files on the main controller side, but because a set of playback mechanisms for multimedia files in the main controller is designed in the coprocessor, two sets of multimedia files are used in this way. The file playback mechanism is used to respectively realize the playback of multimedia files in the main controller and coprocessor, which inevitably makes the program complicated and difficult to manage, and the reliability and maintainability are also inevitably reduced.

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