SUB_Q_HEADER structure (ntddcdrm.h)
The SUB_Q_HEADER structure contains audio status information and the length of the Q subchannel data being returned. This structure is used in conjunction with SUB_Q_CHANNEL_DATA.
Syntax
typedef struct _SUB_Q_HEADER {
UCHAR Reserved;
UCHAR AudioStatus;
UCHAR DataLength[2];
} SUB_Q_HEADER, *PSUB_Q_HEADER;
Members
Reserved
Reserved.
AudioStatus
Reports the audio status with one of the following flags:
AUDIO_STATUS_NOT_SUPPORTED
Audio status byte not supported or not valid.
AUDIO_STATUS_IN_PROGRESS
Audio play operation is in progress.
AUDIO_STATUS_PAUSED
Audio play operation is paused.
AUDIO_STATUS_PLAY_COMPLETE
Audio play operation completed successfully.
AUDIO_STATUS_PLAY_ERROR
Audio play operation stopped due to error.
AUDIO_STATUS_NO_STATUS
No current audio status to return.
DataLength[2]
Gives the length of Q subchannel data that follows this header structure. The bytes in this array are arranged in big-endian order. DataLength[0] contains the most significant byte, and DataLength[1] contains the least significant byte.
Requirements
| Requirement | Value |
|---|---|
| Header | ntddcdrm.h (include Ntddcdrm.h) |