Class unaWaveInDevice

Unit

unaMsAcmClasses

Declaration

type unaWaveInDevice = class(unaWaveDevice)

Description

Use this class to record live audio. deviceID parameter used to construct instances of this class can be from 0 to unaWaveInDevice.getDeviceCount() - 1, or you can use WAVE_MAPPER value instead.

After opening the device check periodically output stream by calling read() method, or use onDataAvailable() event to receive new data chunks.

Hierarchy

• TObject
• unaObject
• unaThread
• unaMsAcmStreamDevice
• unaWaveDevice
• unaWaveInDevice

Overview

Methods

	constructor create(deviceID: uint = WAVE_MAPPER; mapped: bool = false; direct: bool = true; overNum: unsigned = 0);
	function formatChoose(var format: pWAVEFORMATEX; const title: wString = ''; style: unsigned = ACMFORMATCHOOSE_STYLEF_INITTOWFXSTRUCT; enumFlag: unsigned = ACM_FORMATENUMF_HARDWARE + ACM_FORMATENUMF_INPUT; enumFormat: pWAVEFORMATEX = nil): MMRESULT;
	class function getCaps(deviceID: uint; var caps: WAVEINCAPSW): bool; overload;
	class function getDeviceCount(): unsigned;
	class function getErrorText(errorCode: MMRESULT): string;
	function getInCaps(): pWAVEINCAPSW;
	function addHeader(header: unaWaveHeader): MMRESULT; override;
	function afterOpen(): MMRESULT; override;
	function doClose(timeout: tTimeout = 1): MMRESULT; override;
	function doGetErrorText(errorCode: MMRESULT): string; override;
	function doGetPosition(): int64; override;
	function doOpen(flags: uint): MMRESULT; override;
	function formatChooseDef2(var format: pWAVEFORMATEX): MMRESULT; override;
	function getMasterIsSrc2(): bool; override;
	function onHeaderDone(header: unaWaveHeader; wakeUpByHeaderDone: bool): bool; override;
	function prepareHeader(header: pointer): MMRESULT; override;
	function unprepareHeader(header: pointer): MMRESULT; override;
	procedure startIn(); override;
	procedure startOut(); override;

Properties

property handle;

Description

Methods

	constructor create(deviceID: uint = WAVE_MAPPER; mapped: bool = false; direct: bool = true; overNum: unsigned = 0);
Creates wave recording device.

	function formatChoose(var format: pWAVEFORMATEX; const title: wString = ''; style: unsigned = ACMFORMATCHOOSE_STYLEF_INITTOWFXSTRUCT; enumFlag: unsigned = ACM_FORMATENUMF_HARDWARE + ACM_FORMATENUMF_INPUT; enumFormat: pWAVEFORMATEX = nil): MMRESULT;
Displays format selection dialog.

	class function getCaps(deviceID: uint; var caps: WAVEINCAPSW): bool; overload;
MME only. Returns device caps.

	class function getDeviceCount(): unsigned;
MME only. Returns recording device count.

	class function getErrorText(errorCode: MMRESULT): string;
MME only. Returns device error text.

	function getInCaps(): pWAVEINCAPSW;
MME only. Returns device caps.

	function addHeader(header: unaWaveHeader): MMRESULT; override;

	function afterOpen(): MMRESULT; override;

	function doClose(timeout: tTimeout = 1): MMRESULT; override;

	function doGetErrorText(errorCode: MMRESULT): string; override;

	function doGetPosition(): int64; override;

	function doOpen(flags: uint): MMRESULT; override;

	function formatChooseDef2(var format: pWAVEFORMATEX): MMRESULT; override;
Displays a format choose dialog. Reallocates (if necessary) given format.

	function getMasterIsSrc2(): bool; override;
Returns false.

	function onHeaderDone(header: unaWaveHeader; wakeUpByHeaderDone: bool): bool; override;

	function prepareHeader(header: pointer): MMRESULT; override;

	function unprepareHeader(header: pointer): MMRESULT; override;

	procedure startIn(); override;

	procedure startOut(); override;

Properties

	property handle;
WinAPI MME handle

(c) 2012 Lake of Soft