Unit Audio
From Ultibo.org
Return to Unit Reference
Description
Ultibo Audio interface unit
This unit provides both the Audio device interface and the generic USB audio device driver.
Constants
Audio specific constants
AUDIO_* AUDIO_NAME_PREFIX = 'Audio';
|
Name prefix for Audio Devices |
Audio device types
AUDIO_TYPE_* AUDIO_TYPE_NONE = 0;
|
Audio device states
AUDIO_STATE_* AUDIO_STATE_DISABLED = 0;
|
|
AUDIO_STATE_ENABLED = 1;
|
Audio device flags
AUDIO_FLAG_* AUDIO_FLAG_NONE = $00000000;
|
Audio logging
AUDIO_LOG_* AUDIO_LOG_LEVEL_DEBUG = LOG_LEVEL_DEBUG;
|
Audio debugging messages |
AUDIO_LOG_LEVEL_INFO = LOG_LEVEL_INFO;
|
Audio informational messages, such as a device being attached or detached |
AUDIO_LOG_LEVEL_ERROR = LOG_LEVEL_ERROR;
|
Audio error messages |
AUDIO_LOG_LEVEL_NONE = LOG_LEVEL_NONE;
|
No Audio messages |
Type definitions
Audio properties
PAudioProperties = ^TAudioProperties;
TAudioProperties = record
Flags:LongWord;
|
Device flags (eg AUDIO_FLAG_????) |
Audio enumeration callback
TAudioEnumerate = function(Audio:PAudioDevice; Data:Pointer):LongWord;
|
Audio notification callback
TAudioNotification = function(Device:PDevice; Data:Pointer; Notification:LongWord):LongWord;
|
Audio device get properties
TAudioDeviceGetProperties = function(Audio:PAudioDevice; Properties:PAudioProperties):LongWord;
|
Audio device
PAudioDevice = ^TAudioDevice;
TAudioDevice = record
| Device Properties | |
Device:TDevice;
|
The Device entry for this Audio device |
| Audio Properties | |
AudioId:LongWord;
|
Unique Id of this Audio device in the Audio device table |
AudioState:LongWord;
|
Audio device state (eg AUDIO_STATE_ENABLED) |
DeviceGetProperties:TAudioDeviceGetProperties;
|
A Device specific DeviceGetProperties method implementing the standard Audio device interface (Or nil if the default method is suitable) |
| Driver Properties | |
Lock:TMutexHandle;
|
Device lock |
Properties:TAudioProperties;
|
Device properties |
| Internal Properties | |
Prev:PAudioDevice;
|
Previous entry in Audio device table |
Next:PAudioDevice;
|
Next entry in Audio device table |
Public variables
To be documented
Function declarations
To be documented
Return to Unit Reference
