Example usage for javax.sound.sampled TargetDataLine open

Introduction

In this page you can find the example usage for javax.sound.sampled TargetDataLine open.

Prototype

void open(AudioFormat format, int bufferSize) throws LineUnavailableException;

Source Link

Document

Opens the line with the specified format and requested buffer size, causing the line to acquire any required system resources and become operational.

Usage

From source file:com.arkatay.yada.codec.AudioEncoder.java

public void startModule(TargetDataLine inputLine, int audioFormatIndex) throws LineUnavailableException {
    capturedFrameSizeInNanos = 20L * millisToNanos;

    if (state != STATE_OFF)
        throw new IllegalStateException("Trying to re-start the encoder");

    // Check bounds
    AudioFormat[] audioFormats = getSupportedAudioFormats();
    if (audioFormatIndex < 0 || audioFormatIndex >= audioFormats.length)
        throw new LineUnavailableException("Audio format array out of bounds");

    // Get format
    AudioFormat audioFormat = audioFormats[audioFormatIndex];

    // Create line if created internally
    if (inputLine == null) {
        inputLine = createLine(audioFormat);
    }/*from  w ww .  ja va2  s  . co m*/

    // Validate the audio format if external
    else if (!audioFormat.matches(inputLine.getFormat())) {
        throw new LineUnavailableException("Audio format not supported");
    }

    this.inputLine = inputLine;
    this.audioFormatIndex = audioFormatIndex;

    // Call init on the sub-class implementation
    init();

    // Calculate stuff
    capturedFrameSizeInBytes = (int) (audioFormat.getFrameRate() * audioFormat.getFrameSize()
            * capturedFrameSizeInNanos / (1000 * millisToNanos));
    diffTimeNanosLimit = diffTimeMillisLimit * millisToNanos;

    // Open the input line, the wanted buffer size is N times as big as the frame size
    inputLine.open(audioFormat, 4 * capturedFrameSizeInBytes);
    inputLineBufferSize = inputLine.getBufferSize();
    log.debug("Input line is open with buffer size " + inputLineBufferSize);

    // Create a buffer for the captured frame
    captureBuffer = new byte[capturedFrameSizeInBytes];

    // Go to state idle
    state = STATE_IDLE;

    // Start the capturing thread, it will block until startProcessing is called
    thread.start();
}

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