MediaPlayer常見錯誤碼

先看下mediaplayer.h對error類型的定義：

// Generic error codes for the media player framework.  Errors are fatal, the// playback must abort.//// Errors are communicated back to the client using the// MediaPlayerListener::notify method defined below.// In this situation, 'notify' is invoked with the following://   'msg' is set to MEDIA_ERROR.//   'ext1' should be a value from the enum media_error_type.//   'ext2' contains an implementation dependant error code to provide//          more details. Should default to 0 when not used.//// The codes are distributed as follow://   0xx: Reserved//   1xx: Android Player errors. Something went wrong inside the MediaPlayer.//   2xx: Media errors (e.g Codec not supported). There is a problem with the//        media itself.//   3xx: Runtime errors. Some extraordinary condition arose making the playback//        impossible.//enum media_error_type {    // 0xx    MEDIA_ERROR_UNKNOWN = 1,    // 1xx    MEDIA_ERROR_SERVER_DIED = 100,    // 2xx    MEDIA_ERROR_NOT_VALID_FOR_PROGRESSIVE_PLAYBACK = 200,    // 3xx};

常見錯誤類型

1. -2147483648 未知錯誤

例如log輸出：

MediaPlayer: error (1, -2147483648)

error的第一個參數1表示未知錯誤。

錯誤碼-2147483648是十進位表示的，對應16進位的0x80000000。

它定義在檔案：/frameworks/native/include/utils/Errors.h

UNKNOWN_ERROR       = 0x80000000,

此錯誤一般是在framework的libmediaplayerservice，libstagefright目錄中拋出的。

在執行某個動作時被取消或者中斷，就會拋出此錯誤。

也是一個通用錯誤，在不知道錯誤原因時，也可以拋出此錯誤。

2. -107 網路連結錯誤

例如log輸出：

MediaPlayer: error (1, -107)