The Development Of MP3 Player Based On SP Platform

The SP mobile phone developing platform is the only platform which provides the entire mobile phone developing plan support to the customer. This platform's two biggest merits are low power loss and low cost. At present in the world, the universal popular mobile phone platform divides into two kinds from the hardware architecture, one is one base hand with a multimedia chip, the other is single chip plan. The SP mobile phone platform uses latter. Looked from the mobile phone development tendency,the single chip solution will certainly is the future mobile phone plan leadership which largely simplify the development time and cost, meanwhile does not reduce the mobile phone's performance.This article takes the SP mobile phone developing platform as a foundation. First briefly introduces the mobile termination technology from inborn to the mature development course, the technical characteristic, as well as the current domestic and foreign development present situation, discusses inserts the type real-time operating system (RTOS) the principle of work, introduces the MP3 document structure and the MP3 document decoding flow. After the discussion of the rationale above, this article introduces the SP mobile phone developing platform's development environment in detail and makes a detailed demand analysis to MP3 player based on the SP mobile phone developing plat form. Demand analysis includes carrying on the demand modeling and the formulation instructions of software specification to it. After the demand analysis, this article gives a detailed software design of MP3 player. Based on the SP developing platform's feature, I divide into the MP3 player's development two parts to carry on the analysis and the design. One part is the window design, mainly defines the window attribute and the connected window processing function; Another part is function realization, mainly unifies the resources which the SP mobile phone platform provides and function analysis to the MP3 player. Finally it carries on the function test.