Example usage for java.nio FloatBuffer get

Introduction

In this page you can find the example usage for java.nio FloatBuffer get.

Prototype

public FloatBuffer get(float[] dest, int off, int len) 

Source Link

Document

Reads floats from the current position into the specified float array, starting from the specified offset, and increases the position by the number of floats read.

Usage

From source file:Main.java

public static void main(String[] args) {
    FloatBuffer floatBuffer = FloatBuffer.allocate(10);

    floatBuffer.put(0, 1.23F);/* w w  w .j a va  2 s . c  o m*/

    floatBuffer.rewind();

    float[] floatArray = new float[10];

    floatBuffer.get(floatArray, 0, 3);

    System.out.println(Arrays.toString(floatArray));

}

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From source file:Main.java

static void toArray(FloatBuffer src, float[] dst, int offset) {
    src.position(0);/*  w  w  w  . j  a va 2  s .  com*/
    src.get(dst, offset, dst.length - offset);
}

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From source file:uk.co.modularaudio.service.jnajackaudioprovider.JNAJackAppRenderingSession.java

private void masterInBuffersResetOrCopy(final int numFrames, final long periodStartFrameTime) {
    final int numProducersUsed = (masterInBuffers.numAudioBuffers < numProducerAudioPorts
            ? masterInBuffers.numAudioBuffers
            : numProducerAudioPorts);//  w w w  .j a v  a2s .  c om
    int pac = 0;
    for (; pac < numProducersUsed; ++pac) {
        final JackPort pp = producerAudioPorts[pac];
        final FloatBuffer fb = pp.getFloatBuffer();
        final MadChannelBuffer aucb = masterInBuffers.audioBuffers[pac];
        final float[] mifb = aucb.floatBuffer;
        //         if( fb.hasArray() )
        //         {
        //            aucb.floatBuffer = fb.array();
        //         }
        //         else
        //         {
        // Slow copy
        fb.get(mifb, 0, numFrames);
        //         }
    }
    // Point the other channels at silence
    for (int r = pac; r < masterInBuffers.numAudioBuffers; ++r) {
        masterInBuffers.audioBuffers[r].floatBuffer = emptyFloatBuffer.floatBuffer;
    }
    // Should do midi in here
    for (int pmc = 0; pmc < numProducerMidiPorts; ++pmc) {
        try {
            final JackPort mp = producerMidiPorts[pmc];
            final int numMidiEvents = JackMidi.getEventCount(mp);
            if (numMidiEvents > 0) {
                //               log.debug("Processing " + numMidiEvents + " midi events");
            }
            for (int i = 0; i < numMidiEvents; ++i) {
                JackMidi.eventGet(jme, mp, i);
                final int bufferSize = jme.size();
                final byte[] jjmmb = jnaJackMidiMessage.getBuffer();
                if (bufferSize > jjmmb.length) {
                    log.error("Failed midi event byte size during get :-(");
                } else {
                    jme.read(jjmmb);

                    final long jackMidiEventTime = jme.time();
                    //                  log.debug("Within process() call at time " + periodStartFrameTime + " midi event with time " + jackMidiEventTime );

                    final long timestamp = periodStartFrameTime + jackMidiEventTime;

                    midiToEventRingDecoder.decodeMessage(jnaJackMidiMessage.getCommand(),
                            jnaJackMidiMessage.getChannel(), jnaJackMidiMessage.getData1(),
                            jnaJackMidiMessage.getData2(), timestamp);
                }
            }
            // Now push from the ring into the master in buffer
            // Should do some magic to massage them into the right channels....
            for (int c = 0; c < masterInBuffers.numMidiBuffers; ++c) {
                masterInBuffers.noteBuffers[c].numElementsInBuffer = 0;
            }
            //            MadChannelNoteEvent[] noteBuf = masterInBuffers.noteBuffers[0].noteBuffer;
            //            noteEventRing.readUpToMaxNum(target, pos, maxNum)
            final long startCandidateFrameTime = periodStartFrameTime;
            final long endCandidateFrameTime = startCandidateFrameTime + numFrames;
            final int numRead = noteEventRing.readUpToMaxNumAndFrameTime(tmpNoteEventArray, 0,
                    tmpNoteEventArrayLength, endCandidateFrameTime);

            for (int n = 0; n < numRead; ++n) {
                final HardwareMidiNoteEvent midiEvent = tmpNoteEventArray[n];
                final int eventMidiChannel = midiEvent.channel;
                final long eventFrameTime = midiEvent.eventFrameTime;

                if (eventMidiChannel <= masterInBuffers.numMidiBuffers) {
                    final MadChannelBuffer midiChannelBuffer = masterInBuffers.noteBuffers[eventMidiChannel];
                    final MadChannelNoteEvent noteEvent = midiChannelBuffer.noteBuffer[midiChannelBuffer.numElementsInBuffer++];
                    final int sampleIndex = frameTimeToIndex(startCandidateFrameTime, endCandidateFrameTime,
                            eventFrameTime);

                    noteEvent.set(midiEvent.channel, sampleIndex, midiEvent.eventType, midiEvent.paramOne,
                            midiEvent.paramTwo, midiEvent.paramThree);
                }
            }
        } catch (final JackException je) {
            if (log.isErrorEnabled()) {
                log.error("JackException caught in midi process ports: " + je.toString(), je);
            }
        }
    }
}

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