Difference between revisions of "Unit Audio"

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''To be documented''
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'''Audio properties'''
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<div class="toccolours mw-collapsible mw-collapsed" style="border: 1; font-family: arial;">
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<code>PAudioProperties = ^TAudioProperties;</code>
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<code>TAudioProperties = record</code>
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<div class="mw-collapsible-content" style="text-align: left; padding-left: 5px;">
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{| class="wikitable" style="font-size: 14px; background: white;"
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|-
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| <code>Flags:LongWord;</code>
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| Device flags (eg AUDIO_FLAG_????)
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|-
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|}
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</div></div>
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'''Audio enumeration callback'''
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{| class="wikitable" style="font-size: 14px; text-align: left; width: 100%; height: 50px;"
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|-
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| <code>TAudioEnumerate = function(Audio:PAudioDevice; Data:Pointer):LongWord;</code>
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| style="width: 40%;"|
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|-
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|}
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'''Audio notification callback'''
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{| class="wikitable" style="font-size: 14px; text-align: left; width: 100%; height: 50px;"
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|-
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| <code>TAudioNotification = function(Device:PDevice; Data:Pointer; Notification:LongWord):LongWord;</code>
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| style="width: 40%;"|
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|-
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|}
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'''Audio device get properties'''
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{| class="wikitable" style="font-size: 14px; text-align: left; width: 100%; height: 50px;"
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|-
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| <code>TAudioDeviceGetProperties = function(Audio:PAudioDevice; Properties:PAudioProperties):LongWord;</code>
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| style="width: 40%;"|
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|-
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|}
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'''Audio device'''
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<div class="toccolours mw-collapsible mw-collapsed" style="border: 1; font-family: arial;">
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<code>PAudioDevice = ^TAudioDevice;</code>
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<code>TAudioDevice = record</code>
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<div class="mw-collapsible-content" style="text-align: left; padding-left: 5px;">
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{| class="wikitable" style="font-size: 14px; background: white;"
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|-
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|colspan="2"|''Device Properties''
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|-
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| <code>Device:TDevice;</code>
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| The Device entry for this Audio device
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|-
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|colspan="2"|''Audio Properties''
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|-
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| <code>AudioId:LongWord;</code>
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| Unique Id of this Audio device in the Audio device table
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|-
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| <code>AudioState:LongWord;</code>
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| Audio device state (eg AUDIO_STATE_ENABLED)
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|-
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| <code>DeviceGetProperties:TAudioDeviceGetProperties;</code>
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| A Device specific DeviceGetProperties method implementing the standard Audio device interface (Or nil if the default method is suitable)
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|-
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|colspan="2"|''Driver Properties''
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|-
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| <code>Lock:TMutexHandle;</code>
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| Device lock
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|-
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| <code>Properties:TAudioProperties;</code>
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| Device properties
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|-
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|colspan="2"|''Internal Properties''
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|-
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| <code>Prev:PAudioDevice;</code>
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| Previous entry in Audio device table
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|-
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| <code>Next:PAudioDevice;</code>
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| Next entry in Audio device table
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|-
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|}
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</div></div>
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<br />
  
 
=== Public variables ===
 
=== Public variables ===

Revision as of 03:38, 19 June 2017

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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


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