Closed

DirectSound implementation in Delphi for sound recording/output classes

This project received 2 bids from talented freelancers with an average bid price of $183 USD.

Get free quotes for a project like this
Employer working
Project Budget
N/A
Total Bids
2
Project Description

Write DirectSound interface for the listed below wrapper (sound playback/recording). For use in Delphi XE4. Objects should allow re-creation

(freeing an object and creating another copy should work without restrictions). Wave output (TAudioOutput) should work with default output device,

should support simultaneous playback (adding several buffers at the same time should result their mixing).

TAudioInput is should work with default system input device, and return recorded buffers via callback routine; the size of the buffer should be controlled at the time of initialization (in the code below through "chunk" parameter, or any other interface that allows to control the buffer size).

type

TAudioOutput = class

public

constructor Create(Hz:integer; Stereo:boolean; Is8Bit:boolean); //Is8Bit = if true the sound discretion is 8 bit

procedure AddBuffer(p:pointer; cbSize:integer); ;//p - buffer, cbSize - buffer size

destructor Destroy; override;

end;

TAudioCallbackRoutine = procedure (p:pointer; cbSize:integer);

TAudioInput = class

public

property CallBack:TAudioCallbackRoutine read FCallback write FCallback; //callback routine for the sound recording, called when an input buffer is full

constructor Create(Hz:integer; Stereo:boolean; Is8bit:boolean; ChunkSize:integer); //ChunkSize is a size of the input buffer

procedure Start;

procedure Pause;

procedure Stop;

destructor Destroy; override;

end;

Looking to make some money?

  • Set your budget and the timeframe
  • Outline your proposal
  • Get paid for your work

Hire Freelancers who also bid on this project

    • Forbes
    • The New York Times
    • Time
    • Wall Street Journal
    • Times Online