The Research And Design Of Android Video Telephony Based On CP324M

Video phones are3G network multimedia services combining voice and image features,users use a different mobile phone, video phone line with relevant regulations, which can beachieved during the simultaneous display call each other image features, including videotelephony based on a set of protocol stack324suitable for media transmission protocol,including. Overall, the realization of a video telephony features, mainly related to the3Gnetwork-related protocols, transmission and scheduling data flow and control flow, multimediaaudio and video codec module function, affecting solutions and technologies, including W andTD network environment Under CS domain data transmission, video and audio data packetswith324stacks of newspaper-based solution, multiple instances simultaneously codec codecand down rows of data.This paper studies the principle of knowledge related to video telephony, including keytechnologies and protocols, as well as a whole from the hardware to the various functions of theupper module. For the more popular smartphone platform, analyzes the structure of theprogram to select the video phone function modules to China Mobile’s specifications for thesample, the demand began to describe the entire video phone module project implementationson smart phones.This article focuses on the program select the video phone, the functions and the keytechnologies to achieve contrast and resolution, writing not only aims to achieve a completevideo calls on an Android smartphone platform, also includes video telephony multimediaservices in major projects Some Thoughts on technology and video phones more commondifficult problems.This paper describes a video phone based on Android4.0or later, multimedia engine and onaspects of the code that the expansion of StageFright, including major analysis of the two-waydata flow up and down the line and synchronize audio and video codecs and other issues. Then the phone for video streams related issues, put forward some optimization.Application and verification, based on CP side video phone solutions can be applied on aseparate AP and CP-side intelligence platform has been implemented on the Android mobilephone project and through the relevant test specifications and performance requirements, andAndroid4.0and more than version of the transplant, the realization of software modularity anddecoupling. In addition, the paper also calls for a deeper level of video optimization prospected.