高效的Java音乐播放类 2

/** *//**
     * 直接播放url文件
     * 
     * @param uri
     * @param ftype
     * @param loop
     * @return
     */
    public boolean load(URI uri, int ftype, boolean loop) ...{

        // 刷新数据
        reset();
        if (uri == null) ...{
            return false;
        }
        // 获得SoundData
        SoundData data = new SoundData(uri, ftype, loop);
        if (data == null || data.getData() == null) ...{
            return false;
        }
        return init(data.getData(), data.getType(), data.getLoop());

    }

    /** *//**
     * 初始化sound相关数据
     * 
     * @param data
     * @param ftype
     * @param loop
     * @return
     */
    private boolean init(byte[] data, int ftype, boolean loop) ...{
        boolean result = false;

        ByteArrayInputStream bis = null;

        try ...{
            bis = new ByteArrayInputStream(data);
        } catch (Exception e) ...{
            bis = null;
        }

        if (bis == null) ...{
            return false;
        }

        // 判断类型
        switch (ftype) ...{

        // MIDI
        case SoundData._L_SOUNDTYPE_MIDI:

            // 当MIDI不存在时
            if (_midi == null) ...{

                try ...{
                    // 获得Sequencer
                    _midi = MidiSystem.getSequencer();
                    _midi.open();

                } catch (Exception ex) ...{
                    _midi = null;
                }

                if (_midi != null) ...{
                    _midi.addMetaEventListener(this);
                }

            }

            // 当MIDI依旧未获得时
            if (_midi != null) ...{
                // 重新创建Sequence
                Sequence sc = null;

                try ...{
                    sc = MidiSystem.getSequence(bis);
                } catch (Exception e) ...{
                    sc = null;
                }

                if (sc != null) ...{

                    try ...{

                        _midi.setSequence(sc);

                        // 获得是否循环播放
                        _loop = loop;

                        // 获得是否载入
                        result = true;

                    } catch (Exception ee) ...{
                    }

                    // 获得声音类型
                    _soundType = SoundData._L_SOUNDTYPE_MIDI;

                }

            }

            try ...{
                bis.close();
            } catch (Exception ee) ...{
            }

            break;

        // Wav
        case SoundData._L_SOUNDTYPE_WAV:

            AudioFileFormat type = null;

            // 获得Audio
            try ...{
                type = AudioSystem.getAudioFileFormat(bis);
            } catch (Exception e) ...{
                type = null;
            }

            // 关闭流
            try ...{
                bis.close();
            } catch (Exception ex) ...{
            }

            if (type == null) ...{
                return false;
            }

            // 根据指定信息构造数据行的信息对象
            DataLine.Info di = new DataLine.Info(Clip.class, type.getFormat());

            // 转为Clip
            try ...{
                _audio = (Clip) AudioSystem.getLine(di);
            } catch (Exception e) ...{
            }

            // 播放文件
            try ...{

                _audio.open(type.getFormat(), data, 0, data.length);

                _loop = loop;

                result = true;

            } catch (Exception e) ...{
            }

            // 获得文件类型
            _soundType = SoundData._L_SOUNDTYPE_WAV;

            break;

        }

        return result;
    }

    public boolean play(SoundData data) ...{

        if (!load(data)) ...{
            return false;
        }

        return play();

    }

    public boolean play() ...{

        switch (_soundType) ...{

        case SoundData._L_SOUNDTYPE_MIDI:

            try ...{

                _midi.start();

                _playing = true;

                _soundType = SoundData._L_SOUNDTYPE_MIDI;

            } catch (Exception ee) ...{
            }

            break;

        case SoundData._L_SOUNDTYPE_WAV:

            if (_audio != null) ...{

                if (_loop) ...{

                    // 设定循环
                    _audio.setLoopPoints(0, -1);
                    _audio.setFramePosition(0);

                    _audio.loop(Clip.LOOP_CONTINUOUSLY);

                } else ...{

                    // 强制设定播放位置至0
                    _audio.setFramePosition(0);

                    _audio.start();

                }

                _playing = true;

            }

            break;

        }

        return _playing;

    }

    /** *//**
     * 自动播放，循环停止后结束。
     * 
     * @param data
     * @return
     */
    public boolean AutoPlay(SoundData data) ...{
        if (!load(data)) ...{
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