Multimedia video playing system applied to Android platform and multimedia video playing method applied to multimedia video playing system of Android platform

Abstract

The invention provides a multimedia video playing system applied to an Android platform and a multimedia video playing method applied to the multimedia video playing system of the Android platform. According to the invention, two buffer groups (input and output) are provided for a file parser, an OMXCodec, a video decoder, a display image layer module, a Stagefright and an image synthesis module to use through a memory allocator, thereby being capable of avoiding problems in the prior art that the number of buffer groups is large, a requirement for the memory size is high in playing, a large amount of data copy exists among different buffer groups, CPU resources are occupied, and the overall playing performance is affected.

Description

technical field [0001] The invention relates to the technical field of multimedia video playback, in particular to a multimedia video playback system and method applied to an Android platform. Background technique [0002] In the field of smart phone terminals, the multimedia video playback function has become an indispensable requirement, and at the same time, users' requirements for the image quality of mobile phone terminals are also gradually increasing. At present, high-definition video with 1080P resolution (1920×1080) is very common, which puts forward higher requirements for the multimedia video playback capability of mobile terminals. [0003] Specifically, please refer to figure 1 , which is a schematic diagram of a frame structure of an existing multimedia video playback system applied to an Android platform. Such as figure 1 As shown, the existing multimedia video playback system applied to the Android platform includes: file parser 10, OMXCodec11, video decod...

AI Technical Summary

Problems solved by technology

[0012] 1. There are a lot of data copies between different buffer (cache) groups, which occupy CPU resources and affect the overall playback performance;

[0013] 2. The number of buffer (cache) groups is relatively large, and the demand for memory size during playback is relatively high;

[0014] 3. The output video data must be synthesized by the GPU to be displayed on the LCD, which increases the overhead of time and power consumption;

[0015] 4. The Framebuffer of the LCD adopts the mechanism of ping-pong buffer. When switching, it must be ensured that the previous buffer has been refreshed. That is to say, the operation of switching buffers can only be performed at each refreshed sync point, which will cause blocking and delay.

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