jpeg交叉编译(国外英语资料).docVIP

jpeg交叉编译(国外英语资料) Cross compiling of digital photo frame based on FrameBuffer and Libjpeg Library Author: Li Yu read times: 470 Abstract: the cross compiler is running in a computer environment compiler can compile operation in an environment under the code, simply said, is to generate another platform executable code on a platform. Taking Mini2440+Fedora12 embedded development platform as an example, this paper mainly introduces the cross compiling of digital photo frame based on FrameBuffer and Libjpeg library. Key words: cross compiling, FrameBuffer, Libjpeg library, digital photo frame Digital photo frame has attracted much attention in the electronic product market because of its novelty and portability. It has become a fashion to have digital photo frames. Because of its lower threshold, the size of various electronics manufacturers have tried to do this, the purpose of this thesis is the development environment and process to become familiar with the embedded Linux through the digital photo frame project, grasp the process and principle of embedded cross compiler. Is a cross compiler run in a computer environment compiler can compile operation in an environment under the code, simply said, is to generate another platform executable code on a platform. This paper takes Mini2440+Fedora12 embedded development platform as an example, mainly expounds the cross compiling work of digital photo frame based on FrameBuffer and Libjpeg library. 1.FrameBuffer 1.1 what is FrameBuffer? FrameBuffer is a driver interface that appears in the Linux 2.2.xx kernel. Linux Abstract FrameBuffer this device, for the user process, realize direct write screen. The Framebuffer mechanism of imitating graphics function, the graphics hardware structure are abstracted by Framebuffer, read and write operation of the memory directly. Users can view Framebuffer as an image that displays memory and maps it to the address space of the process, which can be read and written directly, while the w