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<!DOCTYPE html>
<html lang="es">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Galería de Efectos Sonoros - Con Controles y Visualización</title>
    <style>
        :root {
            --color1: #6a11cb;
            --color2: #2575fc;
        }
        body {
            font-family: Arial, sans-serif;
            display: flex;
            justify-content: center;
            align-items: center;
            height: 100vh;
            margin: 0;
            background: linear-gradient(to right, var(--color1), var(--color2));
            animation: backgroundChange 30s infinite;
            transition: background 2s ease;
        }
        @keyframes backgroundChange {
            0%, 100% {
                background: linear-gradient(to right, var(--color1), var(--color2));
            }
            50% {
                background: linear-gradient(to right, var(--color2), var(--color1));
            }
        }
        .galeria {
            background: white;
            border-radius: 10px;
            padding: 20px;
            box-shadow: 0 0 15px rgba(0,0,0,0.2);
            text-align: center;
            width: 80%;
            max-width: 600px;
        }
        .control {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            margin: 5px;
            padding: 10px;
            font-size: 40px;
            background: white;
            color: #ff6a5f;
            border: none;
            border-radius: 50%;
            cursor: pointer;
            transition: background 0.3s ease, color 0.3s ease, box-shadow 0.3s ease;
        }
        .control img {
            width: 30px;
            height: 30px;
        }
        .control:hover {
            background: #ff6a5f;
            color: white;
            box-shadow: 0 0 15px rgba(0,0,0,0.3);
        }
        .control:active {
            transform: scale(0.95);
        }
        .control.play-pause {
            background: #2575fc;
            color: yellow;
        }
        .control.previous-next {
            background: #76b852;
            color: white;
        }
        .control.first-last {
            background: #ff7e5f;
            color: white;
        }
        .control.loop {
            background: #d17eff;
            color: white;
            position: relative;
        }
        .control.loop.active {
            background: #8e44ad;
            color: yellow;	
        }
        #progresoContainer {
            width: 100%;
            background-color: #ddd;
            margin-top: 10px;
            border-radius: 5px;
            overflow: hidden;
            position: relative;
            cursor: pointer;
        }
        #barraProgreso {
            width: 0;
            height: 20px;
            background: linear-gradient(to right, #76b852, #8dc26f);
            transition: width 0.1s ease;
        }
        #tiempoInfo {
            margin-top: 10px;
            color: #333;
            font-weight: bold;
        }
        .waveform-container {
            margin-top: 20px;
            height: 100px;
            display: flex;
            align-items: flex-end;
            background: #f0f0f0;
            border-radius: 5px;
            overflow: hidden;
            box-shadow: inset 0 0 10px rgba(0, 0, 0, 0.1);
        }
        .waveform-bar {
            flex: 1;
            background: linear-gradient(to top, #2575fc, #6a11cb);
            transition: height 0.1s ease;
            margin: 0 1px;
            border-radius: 2px 2px 0 0;
            min-height: 5px;
        }
        #audioIndicator {
            margin-top: 10px;
            font-size: 18px;
            color: white;
            background: linear-gradient(to right, #6a11cb, #2575fc);
            padding: 5px 10px;
            border-radius: 5px;
            display: inline-block;
            line-height: 1.5;
        }
        .control-container {
            display: flex;
            justify-content: space-between;
            align-items: center;
            margin: 20px 0;
        }
        .audio-info {
            font-size: 14px;
            color: #666;
            margin-top: 5px;
        }
        .speed-control {
            display: flex;
            justify-content: center;
            align-items: center;
            margin-top: 10px;
        }
        .speed-control button {
            margin: 0 10px;
            padding: 10px;
            font-size: 20px;
            background: #2575fc;
            color: white;
            border: none;
            border-radius: 5px;
            cursor: pointer;
            transition: background 0.3s ease;
        }
        .speed-control button:hover {
            background: #1b5fc6;
        }
        .speed-control span {
            font-size: 20px;
            color: #333;
        }
		
#volumeLabel {
    margin-left: 20px;
    font-size: 20px;
    color: #333;
}

#volumeControl {
    margin-left: 10px;
    width: 300px;
}		
    </style>
</head>
<body style="overflow: hidden">
    <div class="galeria">
        <h2 id="titulo">Galería de Efectos Sonoros</h2>
        <div id="fileInfo" class="audio-info"></div>
        <div class="control-container">
            <button class="control first-last" onclick="irPrimerAudio()">
                <img src="img/first_page.png" alt="First Page">
            </button>
            <button class="control previous-next" onclick="cambiarAudio(-1)">
                <img src="img/skip_previous.png" alt="Previous">
            </button>
            <button class="control play-pause" onclick="pausarReanudar()" id="playPauseButton">
                <img src="img/play.png" alt="Play" id="playPauseIcon">
            </button>
            <button class="control previous-next" onclick="cambiarAudio(1)">
                <img src="img/skip_next.png" alt="Next">
            </button>
            <button class="control first-last" onclick="irUltimoAudio()">
                <img src="img/last_page.png" alt="Last Page">
            </button>
            <button class="control loop" onclick="toggleLoop()" id="loopButton">
                <img src="img/loop.png" alt="Loop" id="loopIcon">
            </button>
        </div>
        <div id="progresoContainer">
            <div id="barraProgreso"></div>
        </div>
        <div id="tiempoInfo">0:00 / 0:00</div>
        <div id="audioIndicator">1 / 3</div>
        <div class="waveform-container" id="waveform"></div>
<div class="speed-control">
    <button onclick="adjustSpeed(-0.1)">-</button>
    <span id="speedDisplay">1.0x</span>
    <button onclick="adjustSpeed(0.1)">+</button>
    <span id="volumeLabel">🔊</span> <!-- Distintivo de volumen -->
    <input type="range" id="volumeControl" min="0" max="1" step="0.01" value="1" onchange="adjustVolume(this.value)">
</div>
		
        <audio id="audioPlayer"></audio>
    </div>

    <script>
const audioFiles = [
    { src: "audios/un-ano-mas.m4a", title: "Un año más" },
    { src: "audios/a-cantaros.mp3", title: "A cántaros" },
    { src: "audios/romance-rosabella-y-domingo.mp3", title: "Romance de Rosabella y Domingo" }
];

let currentAudioIndex = 0;
let isPlaying = false; 
let currentPlaybackRate = 1.0; // Variable para la velocidad de reproducción

const audioPlayer = document.getElementById('audioPlayer');
const playPauseButton = document.getElementById('playPauseButton');
const playPauseIcon = document.getElementById('playPauseIcon');
const loopButton = document.getElementById('loopButton');
const progresoContainer = document.getElementById('progresoContainer');
const barraProgreso = document.getElementById('barraProgreso');
const tiempoInfo = document.getElementById('tiempoInfo');
const audioIndicator = document.getElementById('audioIndicator');
const fileInfo = document.getElementById('fileInfo');
const speedDisplay = document.getElementById('speedDisplay');
const waveformContainer = document.getElementById('waveform');

audioPlayer.addEventListener('loadedmetadata', actualizarDuracion);
audioPlayer.addEventListener('timeupdate', actualizarProgreso);
audioPlayer.addEventListener('ended', handleAudioEnd);
progresoContainer.addEventListener('click', seek);

function cargarAudio(index) {
    const audio = audioFiles[index];
    audioPlayer.src = audio.src;
    fileInfo.textContent = audio.title;
    audioIndicator.textContent = `${index + 1} / ${audioFiles.length}`;
    playPauseIcon.src = "img/play.png"; 
    resetWaveform(); 
    audioPlayer.playbackRate = currentPlaybackRate; // <-- Añade esta línea
}

function pausarReanudar() {
  if (!isPlaying) {
    audioPlayer.play();
    audioPlayer.playbackRate = currentPlaybackRate; // Aplica la velocidad guardada
    playPauseIcon.src = "img/pause.png";
    isPlaying = true;
  } else {
    audioPlayer.pause();
    playPauseIcon.src = "img/play.png";
    isPlaying = false;
    resetWaveform(); 
  }
}

function toggleLoop() {
    loopButton.classList.toggle('active'); 
}

function actualizarProgreso() {
    const porcentaje = (audioPlayer.currentTime / audioPlayer.duration) * 100;
    barraProgreso.style.width = porcentaje + '%';
    tiempoInfo.textContent = `${formatearTiempo(audioPlayer.currentTime)} / ${formatearTiempo(audioPlayer.duration)}`;
    if (isPlaying) {
        actualizarFormaDeOnda(); 
    }
}

function actualizarDuracion() {
    tiempoInfo.textContent = `0:00 / ${formatearTiempo(audioPlayer.duration)}`;
}

function formatearTiempo(segundos) {
    const minutos = Math.floor(segundos / 60);
    const seg = Math.floor(segundos % 60);
    return `${minutos}:${seg < 10 ? '0' : ''}${seg}`;
}

function cambiarAudio(direccion) {
    currentAudioIndex += direccion;
    if (currentAudioIndex < 0) {
        currentAudioIndex = audioFiles.length - 1;
    } else if (currentAudioIndex >= audioFiles.length) {
        currentAudioIndex = 0;
    }
    cargarAudio(currentAudioIndex);
    if (isPlaying) {
        audioPlayer.play();
        playPauseIcon.src = "img/pause.png";
    }
}

function irPrimerAudio() {
    currentAudioIndex = 0;
    cargarAudio(currentAudioIndex);
    if (isPlaying) {
        audioPlayer.play();
        playPauseIcon.src = "img/pause.png";
    }
}

function irUltimoAudio() {
    currentAudioIndex = audioFiles.length - 1;
    cargarAudio(currentAudioIndex);
    if (isPlaying) {
        audioPlayer.play();
        playPauseIcon.src = "img/pause.png";
    }
}

function seek(event) {
    const clickX = event.offsetX;
    const width = progresoContainer.clientWidth;
    const duration = audioPlayer.duration;
    audioPlayer.currentTime = (clickX / width) * duration;
}

function adjustSpeed(change) {
  currentPlaybackRate = Math.max(0.1, Math.min(4.0, audioPlayer.playbackRate + change));
  audioPlayer.playbackRate = currentPlaybackRate; // Actualiza la velocidad
  speedDisplay.textContent = `${currentPlaybackRate.toFixed(1)}x`;
}

function generarFormaDeOnda() {
    waveformContainer.innerHTML = '';
    const barCount = 50;
    for (let i = 0; i < barCount; i++) {
        const bar = document.createElement('div');
        bar.className = 'waveform-bar';
        bar.style.height = '5px'; 
        waveformContainer.appendChild(bar);
    }
}

function actualizarFormaDeOnda() {
    const bars = waveformContainer.children;
    for (let i = 0; i < bars.length; i++) {
        bars[i].style.height = `${Math.random() * 100}%`;
    }
}

function resetWaveform() {
    const bars = waveformContainer.children;
    for (let i = 0; i < bars.length; i++) {
        bars[i].style.height = '5px'; 
    }
}

function handleAudioEnd() {
  if (loopButton.classList.contains('active')) {
    currentAudioIndex = (currentAudioIndex + 1) % audioFiles.length;
    cargarAudio(currentAudioIndex);
    audioPlayer.play();
  } else {
    if (currentAudioIndex < audioFiles.length - 1) {
      currentAudioIndex++;
      cargarAudio(currentAudioIndex);
      audioPlayer.play();
    } else {
      isPlaying = false;
      playPauseIcon.src = "img/play.png";
      resetWaveform();
    }
  }
}

function adjustVolume(volume) {
    audioPlayer.volume = volume;
}

document.getElementById('volumeControl').value = audioPlayer.volume;


cargarAudio(currentAudioIndex);
generarFormaDeOnda(); 
resetWaveform();
    </script>
</body>
</html>