xufulong
4 years ago
parent
d52b84ef84
commit
ec4f9ee641
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package com.frank.ffmpeg.activity |
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|
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import android.Manifest |
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import android.media.MediaPlayer |
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import android.media.audiofx.* |
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import android.os.Build |
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import androidx.appcompat.app.AppCompatActivity |
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import android.os.Bundle |
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import android.os.Environment |
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import android.util.Log |
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import android.util.Pair |
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import android.view.View |
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import android.widget.* |
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import androidx.annotation.RequiresApi |
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import androidx.recyclerview.widget.LinearLayoutManager |
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import androidx.recyclerview.widget.RecyclerView |
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import com.frank.ffmpeg.R |
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import com.frank.ffmpeg.adapter.EqualizerAdapter |
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import com.frank.ffmpeg.format.AudioVisualizer |
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import com.frank.ffmpeg.listener.OnSeeBarListener |
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import com.frank.ffmpeg.view.VisualizerView |
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import java.io.IOException |
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import java.util.ArrayList |
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|
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/** |
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* Audio effect: equalizer, enhancer, visualizer |
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* Created by frank on 2020/10/20. |
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*/ |
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class AudioEffectActivity : AppCompatActivity(), OnSeeBarListener { |
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companion object { |
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private val TAG = AudioEffectActivity::class.java.simpleName |
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private val AUDIO_PATH = Environment.getExternalStorageDirectory().path + "/heart.mp3" |
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} |
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private var mPlayer: MediaPlayer? = null |
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private var mEqualizer: Equalizer? = null |
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private var mBass: BassBoost? = null |
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private var mPresetReverb: PresetReverb? = null |
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private val reverbValues = ArrayList<String>() |
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private var seekBarList: List<SeekBar>? = ArrayList() |
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private var bands: Short = 0 |
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private var minEQLevel: Short = 0 |
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private var spinnerStyle: Spinner? = null |
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private var spinnerReverb: Spinner? = null |
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private var barBassBoost: SeekBar? = null |
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private var equalizerAdapter: EqualizerAdapter? = null |
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private val enableEqualizer = true |
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private var loudnessEnhancer: LoudnessEnhancer? = null |
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private var barEnhancer: SeekBar? = null |
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private var visualizerView: VisualizerView? = null |
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private var mVisualizer: AudioVisualizer? = null |
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private val presetReverb = arrayOf("None", "SmallRoom", "MediumRoom", "LargeRoom", |
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"MediumHall", "LargeHall", "Plate") |
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private val permissions = arrayOf( |
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Manifest.permission.WRITE_EXTERNAL_STORAGE, |
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Manifest.permission.RECORD_AUDIO, |
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Manifest.permission.MODIFY_AUDIO_SETTINGS) |
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private val onPreparedListener = MediaPlayer.OnPreparedListener { |
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setupEqualizer() |
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setupPresetStyle() |
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setupReverberation() |
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setupBassBoost() |
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setLoudnessEnhancer() |
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setupVisualizer() |
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mPlayer!!.start() |
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} |
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public override fun onCreate(savedInstanceState: Bundle?) { |
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super.onCreate(savedInstanceState) |
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checkPermission() |
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setContentView(R.layout.activity_audio_effect) |
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initView() |
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initPlayer() |
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} |
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private fun initView() { |
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spinnerStyle = findViewById(R.id.spinner_style) |
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spinnerReverb = findViewById(R.id.spinner_reverb) |
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barBassBoost = findViewById(R.id.bar_bassboost) |
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barEnhancer = findViewById(R.id.bar_enhancer) |
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visualizerView = findViewById(R.id.visualizer_view) |
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val equalizerView = findViewById<RecyclerView>(R.id.equalizer_view) |
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val layoutManager = LinearLayoutManager(this) |
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layoutManager.orientation = RecyclerView.VERTICAL |
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equalizerView.layoutManager = layoutManager |
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equalizerAdapter = EqualizerAdapter(this, this) |
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equalizerView.adapter = equalizerAdapter |
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} |
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private fun checkPermission() { |
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if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.M) { |
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requestPermissions(permissions, 456) |
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} |
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} |
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private fun initPlayer() { |
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try { |
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mPlayer = MediaPlayer() |
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mPlayer!!.setDataSource(AUDIO_PATH) |
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mPlayer!!.setOnPreparedListener(onPreparedListener) |
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mPlayer!!.prepareAsync() |
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} catch (e: IOException) { |
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e.printStackTrace() |
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} |
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} |
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override fun onProgress(index: Int, progress: Int) { |
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mEqualizer!!.setBandLevel(index.toShort(), (progress + minEQLevel).toShort()) |
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} |
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private fun setupEqualizer() { |
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val equalizerList = ArrayList<Pair<*, *>>() |
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mEqualizer = Equalizer(0, mPlayer!!.audioSessionId) |
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mEqualizer!!.enabled = enableEqualizer |
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// band level: min and max |
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minEQLevel = mEqualizer!!.bandLevelRange[0]//min level |
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val maxEQLevel = mEqualizer!!.bandLevelRange[1] // max level |
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bands = mEqualizer!!.numberOfBands |
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for (i in 0 until bands) { |
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val centerFreq = (mEqualizer!!.getCenterFreq(i.toShort()) / 1000).toString() + " Hz" |
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val pair = Pair.create(centerFreq, mEqualizer!!.getBandLevel(i.toShort()) - minEQLevel) |
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equalizerList.add(pair) |
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} |
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if (equalizerAdapter != null) { |
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equalizerAdapter!!.setMaxProgress(maxEQLevel - minEQLevel) |
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equalizerAdapter!!.setEqualizerList(equalizerList) |
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} |
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} |
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private fun setupPresetStyle() { |
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for (i in 0 until mEqualizer!!.numberOfPresets) { |
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reverbValues.add(mEqualizer!!.getPresetName(i.toShort())) |
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} |
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spinnerStyle!!.adapter = ArrayAdapter(this, android.R.layout.simple_spinner_item, reverbValues) |
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spinnerStyle!!.onItemSelectedListener = object : AdapterView.OnItemSelectedListener { |
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override fun onItemSelected(arg0: AdapterView<*>, arg1: View, arg2: Int, arg3: Long) { |
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try { |
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mEqualizer!!.usePreset(arg2.toShort()) |
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if (equalizerAdapter != null) { |
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seekBarList = equalizerAdapter!!.getSeekBarList() |
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} |
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if (bands > 0 && seekBarList != null && mEqualizer != null) { |
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for (band in 0 until bands) { |
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seekBarList!![band].progress = mEqualizer!!.getBandLevel(band.toShort()) - minEQLevel |
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} |
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} |
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} catch (e: Exception) { |
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Log.e(TAG, "preset style error=$e") |
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} |
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} |
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override fun onNothingSelected(arg0: AdapterView<*>) {} |
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} |
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} |
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private fun setupReverberation() { |
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mPresetReverb = PresetReverb(0, mPlayer!!.audioSessionId) |
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mPresetReverb!!.enabled = enableEqualizer |
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mPlayer!!.attachAuxEffect(mPresetReverb!!.id) |
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//sendLevel:0-1 |
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mPlayer!!.setAuxEffectSendLevel(1.0f) |
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spinnerReverb!!.adapter = ArrayAdapter(this, android.R.layout.simple_spinner_item, presetReverb) |
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spinnerReverb!!.onItemSelectedListener = object : AdapterView.OnItemSelectedListener { |
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override fun onItemSelected(arg0: AdapterView<*>, arg1: View, arg2: Int, arg3: Long) { |
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try { |
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mPresetReverb!!.preset = arg2.toShort() |
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} catch (e: Exception) { |
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Log.e(TAG, "preset reverberation error=$e") |
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} |
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} |
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override fun onNothingSelected(arg0: AdapterView<*>) {} |
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} |
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} |
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private fun setupBassBoost() { |
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mBass = BassBoost(0, mPlayer!!.audioSessionId) |
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mBass!!.enabled = enableEqualizer |
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// 0--1000 |
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barBassBoost!!.max = 1000 |
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barBassBoost!!.progress = 0 |
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barBassBoost!!.setOnSeekBarChangeListener(object : SeekBar.OnSeekBarChangeListener { |
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override fun onProgressChanged(seekBar: SeekBar, progress: Int, fromUser: Boolean) { |
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// set the strength of bass boost |
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mBass!!.setStrength(progress.toShort()) |
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} |
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override fun onStartTrackingTouch(seekBar: SeekBar) {} |
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override fun onStopTrackingTouch(seekBar: SeekBar) {} |
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}) |
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} |
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@RequiresApi(Build.VERSION_CODES.KITKAT) |
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private fun setLoudnessEnhancer() { |
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loudnessEnhancer = LoudnessEnhancer(mPlayer!!.audioSessionId) |
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loudnessEnhancer!!.enabled = true |
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// Unit: mB |
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loudnessEnhancer!!.setTargetGain(500) |
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barEnhancer!!.max = 1000 |
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barEnhancer!!.setOnSeekBarChangeListener(object : SeekBar.OnSeekBarChangeListener { |
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override fun onProgressChanged(seekBar: SeekBar?, progress: Int, fromUser: Boolean) { |
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if (fromUser) { |
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loudnessEnhancer!!.setTargetGain(progress) |
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} |
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} |
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override fun onStartTrackingTouch(seekBar: SeekBar?) { |
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} |
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override fun onStopTrackingTouch(seekBar: SeekBar?) { |
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} |
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}) |
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} |
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private fun setupVisualizer() { |
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mVisualizer = AudioVisualizer() |
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mVisualizer?.initVisualizer(mPlayer!!.audioSessionId, false, true, object: Visualizer.OnDataCaptureListener{ |
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override fun onFftDataCapture(visualizer: Visualizer?, fft: ByteArray?, samplingRate: Int) { |
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if (visualizerView != null && fft != null) { |
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visualizerView!!.post { visualizerView!!.setWaveData(fft) } |
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} |
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} |
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override fun onWaveFormDataCapture(visualizer: Visualizer?, waveform: ByteArray?, samplingRate: Int) { |
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} |
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}) |
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} |
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private fun releaseVisualizer() { |
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mVisualizer?.releaseVisualizer() |
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} |
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override fun onDestroy() { |
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super.onDestroy() |
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mEqualizer!!.release() |
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mPresetReverb!!.release() |
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mBass!!.release() |
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loudnessEnhancer!!.release() |
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releaseVisualizer() |
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mPlayer!!.release() |
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} |
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} |
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@ -0,0 +1,89 @@ |
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package com.frank.ffmpeg.adapter |
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import android.content.Context |
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import android.util.Pair |
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import android.view.LayoutInflater |
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import android.view.View |
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import android.view.ViewGroup |
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import android.widget.SeekBar |
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import android.widget.TextView |
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import androidx.recyclerview.widget.RecyclerView |
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import com.frank.ffmpeg.R |
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import com.frank.ffmpeg.listener.OnSeeBarListener |
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import java.util.ArrayList |
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/** |
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* @author frank |
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* @date 2020-10-19 0:19 |
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* @desc Adapter of equalizer |
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*/ |
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class EqualizerAdapter(private val context: Context, private val onSeeBarListener: OnSeeBarListener?) : RecyclerView.Adapter<RecyclerView.ViewHolder>() { |
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private var equalizerList: List<Pair<*, *>>? = ArrayList() |
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private val seekBarList = ArrayList<SeekBar>() |
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private var maxProgress: Int = 0 |
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override fun onCreateViewHolder(viewGroup: ViewGroup, i: Int): RecyclerView.ViewHolder { |
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return EqualizerHolder(LayoutInflater.from(context).inflate(R.layout.adapter_equalizer, null)) |
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} |
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override fun onBindViewHolder(viewHolder: RecyclerView.ViewHolder, i: Int) { |
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val holder = viewHolder as EqualizerHolder |
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if (equalizerList != null) { |
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val centerFreq = equalizerList!![i].first as String |
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holder.txtFrequency.text = centerFreq |
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} |
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seekBarList.add(holder.barEqualizer) |
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holder.barEqualizer.max = maxProgress |
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val currentProgress = equalizerList!![i].second as Int |
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holder.barEqualizer.progress = currentProgress |
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holder.barEqualizer.setOnSeekBarChangeListener(object : SeekBar.OnSeekBarChangeListener { |
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override fun onProgressChanged(seekBar: SeekBar, progress: Int, fromUser: Boolean) { |
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if (fromUser) { |
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onSeeBarListener?.onProgress(i, progress) |
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} |
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} |
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override fun onStartTrackingTouch(seekBar: SeekBar) { |
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} |
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override fun onStopTrackingTouch(seekBar: SeekBar) { |
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} |
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}) |
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} |
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override fun getItemCount(): Int { |
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return if (equalizerList != null) equalizerList!!.size else 0 |
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} |
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private inner class EqualizerHolder internal constructor(itemView: View) : RecyclerView.ViewHolder(itemView) { |
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val txtFrequency: TextView = itemView.findViewById(R.id.txt_frequency) |
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val barEqualizer: SeekBar = itemView.findViewById(R.id.bar_equalizer) |
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} |
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fun setMaxProgress(maxProgress: Int) { |
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if (maxProgress > 0) { |
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this.maxProgress = maxProgress |
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} |
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} |
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fun setEqualizerList(equalizerList: List<Pair<*, *>>?) { |
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if (equalizerList != null) { |
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this.equalizerList = equalizerList |
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notifyDataSetChanged() |
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} |
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} |
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fun getSeekBarList(): List<SeekBar> { |
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return seekBarList |
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} |
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} |
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@ -0,0 +1,35 @@ |
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package com.frank.ffmpeg.format; |
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import android.media.audiofx.Visualizer; |
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import android.os.Build; |
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/** |
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* Visualizer of Audio frequency |
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* Created by frank on 2020/10/20. |
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*/ |
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public class AudioVisualizer { |
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private Visualizer visualizer; |
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public void initVisualizer(int audioSession, boolean waveform, boolean fft, Visualizer.OnDataCaptureListener dataCaptureListener) { |
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visualizer = new Visualizer(audioSession); |
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int captureSize = Visualizer.getCaptureSizeRange()[1]; |
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int captureRate = Visualizer.getMaxCaptureRate() / 2; |
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visualizer.setCaptureSize(captureSize); |
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visualizer.setDataCaptureListener(dataCaptureListener, captureRate, waveform, fft); |
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visualizer.setScalingMode(Visualizer.SCALING_MODE_NORMALIZED); |
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visualizer.setEnabled(true); |
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} |
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public void releaseVisualizer() { |
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if (visualizer != null) { |
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int captureRate = Visualizer.getMaxCaptureRate() / 2; |
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visualizer.setEnabled(false); |
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visualizer.setDataCaptureListener(null, captureRate, false, false); |
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visualizer.release(); |
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visualizer = null; |
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} |
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} |
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} |
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@ -0,0 +1,5 @@ |
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package com.frank.ffmpeg.listener |
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interface OnSeeBarListener { |
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fun onProgress(index: Int, progress: Int) |
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} |
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@ -0,0 +1,168 @@ |
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package com.frank.ffmpeg.view |
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import android.content.Context |
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import android.graphics.Canvas |
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import android.graphics.Color |
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import android.graphics.Paint |
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import android.graphics.Path |
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import android.graphics.Point |
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import android.util.AttributeSet |
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import android.view.View |
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import java.util.ArrayList |
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/** |
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* the custom view of audio visualizer |
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* Created by frank on 2020/10/19. |
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*/ |
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class VisualizerView : View { |
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private var upShowStyle = ShowStyle.STYLE_HOLLOW_LUMP |
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private var waveData: ByteArray? = null |
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private var pointList: MutableList<Point>? = null |
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private var lumpPaint: Paint? = null |
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private var wavePath = Path() |
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constructor(context: Context) : super(context) { |
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init() |
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} |
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constructor(context: Context, attrs: AttributeSet?) : super(context, attrs) { |
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init() |
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} |
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constructor(context: Context, attrs: AttributeSet?, defStyleAttr: Int) : super(context, attrs, defStyleAttr) { |
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init() |
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} |
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private fun init() { |
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lumpPaint = Paint() |
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lumpPaint!!.isAntiAlias = true |
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lumpPaint!!.color = LUMP_COLOR |
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lumpPaint!!.strokeWidth = 2f |
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lumpPaint!!.style = Paint.Style.STROKE |
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} |
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fun setWaveData(data: ByteArray) { |
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this.waveData = readyData(data) |
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genSamplingPoint(data) |
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invalidate() |
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} |
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fun setStyle(upShowStyle: ShowStyle) { |
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this.upShowStyle = upShowStyle |
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} |
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override fun onDraw(canvas: Canvas) { |
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super.onDraw(canvas) |
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wavePath.reset() |
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for (i in 0 until LUMP_COUNT) { |
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if (waveData == null) { |
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canvas.drawRect(((LUMP_WIDTH + LUMP_SPACE) * i).toFloat(), |
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(LUMP_MAX_HEIGHT - LUMP_MIN_HEIGHT).toFloat(), |
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((LUMP_WIDTH + LUMP_SPACE) * i + LUMP_WIDTH).toFloat(), |
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LUMP_MAX_HEIGHT.toFloat(), |
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lumpPaint!!) |
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continue |
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} |
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when (upShowStyle) { |
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ShowStyle.STYLE_HOLLOW_LUMP -> drawLump(canvas, i, false) |
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ShowStyle.STYLE_WAVE -> drawWave(canvas, i, false) |
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else -> { |
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} |
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} |
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} |
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} |
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private fun drawWave(canvas: Canvas, i: Int, reversal: Boolean) { |
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if (pointList == null || pointList!!.size < 2) { |
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return |
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} |
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val ratio = SCALE * if (reversal) -1 else 1 |
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if (i < pointList!!.size - 2) { |
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val point = pointList!![i] |
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val nextPoint = pointList!![i + 1] |
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val midX = point.x + nextPoint.x shr 1 |
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if (i == 0) { |
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wavePath.moveTo(point.x.toFloat(), LUMP_MAX_HEIGHT - point.y * ratio) |
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} |
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wavePath.cubicTo(midX.toFloat(), LUMP_MAX_HEIGHT - point.y * ratio, |
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midX.toFloat(), LUMP_MAX_HEIGHT - nextPoint.y * ratio, |
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nextPoint.x.toFloat(), LUMP_MAX_HEIGHT - nextPoint.y * ratio) |
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canvas.drawPath(wavePath, lumpPaint!!) |
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} |
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} |
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private fun drawLump(canvas: Canvas, i: Int, reversal: Boolean) { |
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val minus = if (reversal) -1 else 1 |
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val top = LUMP_MAX_HEIGHT - (LUMP_MIN_HEIGHT + waveData!![i] * SCALE) * minus |
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canvas.drawRect((LUMP_SIZE * i).toFloat(), |
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top, |
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(LUMP_SIZE * i + LUMP_WIDTH).toFloat(), |
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LUMP_MAX_HEIGHT.toFloat(), |
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lumpPaint!!) |
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} |
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/** |
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* generate the waveform of sampling points |
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* |
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* @param data data |
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*/ |
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private fun genSamplingPoint(data: ByteArray) { |
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if (upShowStyle != ShowStyle.STYLE_WAVE) { |
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return |
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} |
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if (pointList == null) { |
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pointList = ArrayList() |
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} else { |
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pointList!!.clear() |
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} |
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pointList!!.add(Point(0, 0)) |
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var i = WAVE_SAMPLING_INTERVAL |
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while (i < LUMP_COUNT) { |
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pointList!!.add(Point(LUMP_SIZE * i, waveData!![i].toInt())) |
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i += WAVE_SAMPLING_INTERVAL |
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} |
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pointList!!.add(Point(LUMP_SIZE * LUMP_COUNT, 0)) |
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} |
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enum class ShowStyle { |
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STYLE_HOLLOW_LUMP, |
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STYLE_WAVE, |
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STYLE_NOTHING |
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} |
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companion object { |
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private const val LUMP_COUNT = 128 |
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private const val LUMP_WIDTH = 6 |
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private const val LUMP_SPACE = 2 |
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private const val LUMP_MIN_HEIGHT = LUMP_WIDTH |
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private const val LUMP_MAX_HEIGHT = 200 |
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private const val LUMP_SIZE = LUMP_WIDTH + LUMP_SPACE |
||||
private val LUMP_COLOR = Color.parseColor("#6de6f6") |
||||
|
||||
private const val WAVE_SAMPLING_INTERVAL = 3 |
||||
|
||||
private const val SCALE = (LUMP_MAX_HEIGHT / LUMP_COUNT).toFloat() |
||||
|
||||
private fun readyData(fft: ByteArray): ByteArray { |
||||
val newData = ByteArray(LUMP_COUNT) |
||||
var abs: Byte |
||||
for (i in 0 until LUMP_COUNT) { |
||||
abs = kotlin.math.abs(fft[i].toInt()).toByte() |
||||
newData[i] = if (abs < 0) 127 else abs |
||||
} |
||||
return newData |
||||
} |
||||
} |
||||
} |
||||
@ -0,0 +1,80 @@ |
||||
<?xml version="1.0" encoding="utf-8"?> |
||||
<LinearLayout |
||||
xmlns:android="http://schemas.android.com/apk/res/android" |
||||
android:layout_width="match_parent" |
||||
android:layout_height="match_parent" |
||||
android:layout_marginStart="16dp" |
||||
android:orientation="vertical"> |
||||
|
||||
<TextView |
||||
android:layout_width="match_parent" |
||||
android:layout_height="wrap_content" |
||||
android:layout_marginTop="10dp" |
||||
android:text="@string/audio_equalizer"> |
||||
</TextView> |
||||
|
||||
<androidx.recyclerview.widget.RecyclerView |
||||
android:id="@+id/equalizer_view" |
||||
android:layout_width="match_parent" |
||||
android:layout_height="wrap_content"> |
||||
</androidx.recyclerview.widget.RecyclerView> |
||||
|
||||
<TextView |
||||
android:layout_width="match_parent" |
||||
android:layout_height="wrap_content" |
||||
android:layout_marginTop="10dp" |
||||
android:text="@string/audio_style"/> |
||||
|
||||
<Spinner |
||||
android:id="@+id/spinner_style" |
||||
android:layout_width="match_parent" |
||||
android:layout_height="wrap_content" |
||||
android:layout_marginTop="5dp"> |
||||
</Spinner> |
||||
|
||||
<TextView |
||||
android:layout_width="match_parent" |
||||
android:layout_height="wrap_content" |
||||
android:layout_marginTop="10dp" |
||||
android:text="@string/audio_reverb"/> |
||||
|
||||
<Spinner |
||||
android:id="@+id/spinner_reverb" |
||||
android:layout_width="match_parent" |
||||
android:layout_height="wrap_content" |
||||
android:layout_marginTop="5dp"> |
||||
</Spinner> |
||||
|
||||
<TextView |
||||
android:layout_width="match_parent" |
||||
android:layout_height="wrap_content" |
||||
android:layout_marginTop="10dp" |
||||
android:text="@string/audio_bass_boost"/> |
||||
|
||||
<SeekBar |
||||
android:id="@+id/bar_bassboost" |
||||
android:layout_width="match_parent" |
||||
android:layout_height="wrap_content" |
||||
android:layout_marginTop="5dp"> |
||||
</SeekBar> |
||||
|
||||
<TextView |
||||
android:layout_width="match_parent" |
||||
android:layout_height="wrap_content" |
||||
android:layout_marginTop="10dp" |
||||
android:text="@string/audio_voice_enhancer"/> |
||||
|
||||
<SeekBar |
||||
android:id="@+id/bar_enhancer" |
||||
android:layout_width="match_parent" |
||||
android:layout_height="wrap_content" |
||||
android:layout_marginTop="5dp"> |
||||
</SeekBar> |
||||
|
||||
<com.frank.ffmpeg.view.VisualizerView |
||||
android:id="@+id/visualizer_view" |
||||
android:layout_width="match_parent" |
||||
android:layout_height="180dp" |
||||
android:layout_marginEnd="16dp"/> |
||||
|
||||
</LinearLayout> |
||||
@ -0,0 +1,18 @@ |
||||
<?xml version="1.0" encoding="utf-8"?> |
||||
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android" |
||||
android:layout_width="match_parent" |
||||
android:layout_height="match_parent"> |
||||
|
||||
<TextView |
||||
android:id="@+id/txt_frequency" |
||||
android:layout_width="wrap_content" |
||||
android:layout_height="wrap_content" |
||||
android:layout_centerHorizontal="true" /> |
||||
|
||||
<SeekBar |
||||
android:id="@+id/bar_equalizer" |
||||
android:layout_width="match_parent" |
||||
android:layout_height="wrap_content" |
||||
android:layout_below="@+id/txt_frequency"/> |
||||
|
||||
</RelativeLayout> |
||||
Loading…
Reference in new issue