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A library for processing Amiga and Atari still images, video, audio and meta-data.
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/*
 * @(#)Main.java
 * Copyright © 2023 Werner Randelshofer, Switzerland. MIT License.
 */
package org.monte.media.seq;

import org.monte.media.amigabitmap.AmigaBitmapImage;

import java.awt.image.ColorModel;
import java.util.ArrayList;

/**
 * Represents a frame in a movie track.
 *
 * @author Werner Randelshofer, Hausmatt 10, CH-6405 Goldau, Switzerland
 */
public abstract class SEQFrame {
    protected ColorModel colorModel;
    protected byte[] data;
    private int operation;
    private int storageMethod;
    private long reltime;
    private int interleave;
    private int bits;
    protected final static int
            // common BITs
            BadBitsOP_GeneralDelta = 0xffc0,
            BIT_LongData = 1,
            BIT_XOR = 2,
            BIT_OneInfoListForAllPlanes = 4,
            BIT_RLC = 8,
            BIT_Vertical = 16,
            BIT_LongInfoOffsets = 32,
    // BITs for Vertical Delta 5 Kompression
    BadBitsOP_ByteVertical = 0xfff7;

    /**
     * Holds an array of audio commands associated with this ANM frame.
     */
    private SEQAudioCommand[] audioCommands;

    /**
     * Adds an audio command to this anim frame.
     */
    public void addAudioCommand(SEQAudioCommand command) {
        if (audioCommands == null) {
            audioCommands = new SEQAudioCommand[1];
        } else {
            SEQAudioCommand[] old = audioCommands;
            audioCommands = new SEQAudioCommand[old.length + 1];
            System.arraycopy(old, 0, audioCommands, 0, old.length);
        }
        audioCommands[audioCommands.length - 1] = command;
    }

    /**
     * Returns audio commands associated with this frame.
     * Returns null if there are no audio commands available for this frame.
     */
    public SEQAudioCommand[] getAudioCommands() {
        return audioCommands;
    }

    /**
     * Removes duplicate audio commands.
     */
    public void cleanUpAudioCommands() {
        if (audioCommands != null && audioCommands.length > 1) {
            int i, j;
            ArrayList v = new ArrayList();
            v.add(audioCommands[0]);
            for (i = 1; i < audioCommands.length; i++) {
                for (j = 0; j < i; j++) {
                    if ((audioCommands[j].getChannelMask() & audioCommands[i].getChannelMask()) != 0) {
                        break;
                    }
                }
                if (j == i) v.add(audioCommands[i]);
                //else System.out.println("AudioCommand eliminiert "+audioCommands[i].getSound());
            }
            audioCommands = v.toArray(new SEQAudioCommand[v.size()]);
        }

    }


    public void setColorModel(ColorModel cm) {
        colorModel = cm;
    }

    public ColorModel getColorModel() {
        return colorModel;
    }

    public void setData(byte[] data) {
        this.data = data;
    }

    public void setOperation(int operation) {
        this.operation = operation;
    }

    public void setStorageMethod(int storageMethod) {
        this.storageMethod = storageMethod;
    }

    public void setWidth(int w) { /*w_ = w;*/ }

    public void setHeight(int h) { /*h_ = h;*/ }

    public void setX(int x) { /*x_ = x;*/ }

    public void setY(int y) { /*y_ = y;*/ }

    public void setAbsTime(long abstime) { /*abstime_ = abstime;*/ }

    public void setRelTime(long reltime) {
        this.reltime = reltime;
    }

    public void setInterleave(int interleave) {
        this.interleave = interleave;
    }

    public void setBits(int bits) {
        this.bits = bits;
    }

    public int getOperation() {
        return this.operation;
    }

    public int getStorageMethod() {
        return this.storageMethod;
    }

    public int getBits() {
        return this.bits;
    }

    //  public int getWidth() { /*return w_;*/ }
    //  public int getHeight() { /*return h_;*/ }
    public long getRelTime() {
        return this.reltime;
    }

    public int getInterleave() {
        return this.interleave;
    }

    public abstract void decode(AmigaBitmapImage bitmap, SEQMovieTrack track);

    public int getTopBound(SEQMovieTrack track) {
        return 0;
    }

    public int getBottomBound(SEQMovieTrack track) {
        return track.getHeight() - 1;
    }

    public int getLeftBound(SEQMovieTrack track) {
        return 0;
    }

    public int getRightBound(SEQMovieTrack track) {
        return track.getWidth() - 1;
    }

    /**
     * Returns true if the frame can be decoded over both the previous frame
     * or the subsequent frame. Bidirectional frames can be used efficiently
     * for forward and backward playing a movie.
     * 
     * All key frames are bidirectional. Delta frames which use an XOR OP-mode
     * are bidirectional as well.
     */
    public boolean isBidirectional() {
        return true;
    }
}