fix length is 0

bug: 解决centerCrop问题 close Tencent#276

Update README.md

fix: 修复部分渲染宏与GPUImage冲突

Merge branch 'master' of https://github.com/Tencent/vap

feat: src点击回调增加位置信息

Update README.md

bugfix: 重写box解析部分

Merge pull request Tencent#195 from Tencent/bugfix/android_state_error

bug: 解决recycleview view复用导致无法播放的问题 close Tencent#189

Merge pull request Tencent#186 from Tencent/feature/ios_caton

bugfix：修复5s、6机型解码性能差，导致停止任务未立即执行，陷入渲染死循环，画面卡在最后一帧