IDiscFormat2Data::get_CurrentRotationTypeIsPureCAV method (imapi2.h)
Retrieves the current rotational-speed control used by the recorder.
Syntax
HRESULT get_CurrentRotationTypeIsPureCAV(
[out] VARIANT_BOOL *value
);
Parameters
[out] value
Is VARIANT_TRUE if constant angular velocity (CAV) rotational-speed control is in use. Otherwise, VARIANT_FALSE to indicate that another rotational-speed control that the recorder supports is in use.
Return value
S_OK is returned on success, but other success codes may be returned as a result of implementation. The following error codes are commonly returned on operation failure, but do not represent the only possible error values:
| Return code | Description |
|---|---|
|
The request requires a current disc recorder to be selected.
Value: 0xC0AA0003 |
|
One or more arguments are not valid.
Value: 0x80070057 |
|
Pointer is not valid.
Value: 0x80004003 |
|
Unspecified failure.
Value: 0x80004005 |
|
Failed to allocate the required memory.
Value: 0x8007000E |
|
The device failed to accept the command within the timeout period. This may be caused by the device having entered an inconsistent state, or the timeout value for the command may need to be increased.
Value: 0xC0AA020D |
|
The device reported unexpected or invalid data for a command.
Value: 0xC0AA02FF |
|
The media is inserted upside down.
Value: 0xC0AA0204 |
|
The drive reported that it is in the process of becoming ready. Please try the request again later.
Value: 0xC0AA0205 |
|
There is no media in the device.
Value: 0xC0AA0202 |
|
The media is currently being formatted. Please wait for the format to complete before attempting to use the media.
Value: 0xC0AA0206 |
|
The drive reported that it is performing a long-running operation, such as finishing a write. The drive may be unusable for a long period of time.
Value: 0xC0AA0207 |
|
The write failed because the drive did not receive data quickly enough to continue writing. Moving the source data to the local computer, reducing the write speed, or enabling a "buffer underrun free" setting may resolve this issue.
Value: 0xC0AA0300 |
|
The media is not compatible or of unknown physical format.
Value: 0xC0AA0203 |
|
The DVD structure is not present. This may be caused by incompatible drive/medium used.
Value: 0xC0AA020E |
|
The device reported that the requested mode page (and type) is not present.
Value: 0xC0AA0201 |
|
The drive reported that the combination of parameters provided in the mode page for a MODE SELECT command were not supported.
Value: 0xC0AA0208 |
|
The drive reported that the media is write protected.
Value: 0xC0AA0209 |
|
The media's speed is incompatible with the device. This may be caused by using higher or lower speed media than the range of speeds supported by the device.
Value: 0xC0AA020F |
|
The specified handle is invalid.
Value: 6 |
|
The specified network resource or device is no longer available.
Value: 55 |
|
The device associated with this recorder during the last operation has been exclusively locked, causing this operation to failed.
Value: 0xC0AA0210 |
Remarks
To retrieve the requested rotational-speed control, call the IDiscFormat2Data::get_RequestedRotationTypeIsPureCAV method.
Rotational-speed control types include the following:
- CLV (Constant Linear Velocity). The disc is written at a constant speed. Standard rotational control.
- CAV (Constant Angular Velocity). The disc is written at a constantly increasing speed.
- ZCAV (Zone Constant Linear Velocity). The disc is divided into zones. After each zone, the write speed increases. This is an impure form of CAV.
- PCAV (Partial Constant Angular Velocity). The disc speed increases up to a specified velocity. Once reached, the disc spins at the specified velocity for the duration of the disc writing.
Requirements
| Requirement | Value |
|---|---|
| Minimum supported client | Windows Vista, Windows XP with SP2 [desktop apps only] |
| Minimum supported server | Windows Server 2003 [desktop apps only] |
| Target Platform | Windows |
| Header | imapi2.h |