Android mediaplayer發生錯誤時會顯示
E/MediaPlayer( 1598): error (1, -19)
E/MediaPlayer( 1598): Error (1,-19)
並呼叫
onErrorListener.onError(MediaPlayer mp, int what, int extra)
就是對應 what = 1, extra = 19
what的定義可以在下面位置找到
frameworks/base/include/media/mediaplayer.h
要注意的一點是, Android從2.x開始已把Media Framework從Opencore換成StageFright, Error Code不是參考OpenCore的, 應該要參考標準的errno.h, 所以這邊發生的是
#define ENODEV 19 /* No such device */
ErrorCode參照
what:
enum media_player_states {
MEDIA_PLAYER_STATE_ERROR = 0,
MEDIA_PLAYER_IDLE = 1 << 0, // 1
MEDIA_PLAYER_INITIALIZED = 1 << 1, // 2
MEDIA_PLAYER_PREPARING = 1 << 2, // 4
MEDIA_PLAYER_PREPARED = 1 << 3, // 8
MEDIA_PLAYER_STARTED = 1 << 4, // 16
MEDIA_PLAYER_PAUSED = 1 << 5, // 32
MEDIA_PLAYER_STOPPED = 1 << 6, // 64
MEDIA_PLAYER_PLAYBACK_COMPLETE = 1 << 7
};
extra: (ref: kernel/include/asm-generic/errno-base.h)
#define EPERM 1 /* Operation not permitted */
#define ENOENT 2 /* No such file or directory */
#define ESRCH 3 /* No such process */
#define EINTR 4 /* Interrupted system call */
#define EIO 5 /* I/O error */
#define ENXIO 6 /* No such device or address */
#define E2BIG 7 /* Argument list too long */
#define ENOEXEC 8 /* Exec format error */
#define EBADF 9 /* Bad file number */
#define ECHILD 10 /* No child processes */
#define EAGAIN 11 /* Try again */
#define ENOMEM 12 /* Out of memory */
#define EACCES 13 /* Permission denied */
#define EFAULT 14 /* Bad address */
#define ENOTBLK 15 /* Block device required */
#define EBUSY 16 /* Device or resource busy */
#define EEXIST 17 /* File exists */
#define EXDEV 18 /* Cross-device link */
#define ENODEV 19 /* No such device */
#define ENOTDIR 20 /* Not a directory */
#define EISDIR 21 /* Is a directory */
#define EINVAL 22 /* Invalid argument */
#define ENFILE 23 /* File table overflow */
#define EMFILE 24 /* Too many open files */
#define ENOTTY 25 /* Not a typewriter */
#define ETXTBSY 26 /* Text file busy */
#define EFBIG 27 /* File too large */
#define ENOSPC 28 /* No space left on device */
#define ESPIPE 29 /* Illegal seek */
#define EROFS 30 /* Read-only file system */
#define EMLINK 31 /* Too many links */
#define EPIPE 32 /* Broken pipe */
#define EDOM 33 /* Math argument out of domain of func */
#define ERANGE 34 /* Math result not representable */
參考連結
- http://stackoverflow.com/questions/3857578/android-mediaplayer-error-codes
- http://univasity.iteye.com/blog/898613
