From 3a19563278e17a310377ec9a5de5de2c4667e7ea Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Patrick=20Ha=C3=9Fel?= <git@patrick-hassel.de>
Date: Thu, 5 Jun 2025 14:33:16 +0200
Subject: [PATCH] playlist

---
 src/main.cpp     |  3 ++
 src/player.cpp   | 13 +++----
 src/player.h     |  6 ----
 src/playlist.cpp | 91 ++++++++++++++++++++++++++++++++++++++++++++++++
 src/playlist.h   | 20 +++++++++++
 5 files changed, 119 insertions(+), 14 deletions(-)
 create mode 100644 src/playlist.cpp
 create mode 100644 src/playlist.h

diff --git a/src/main.cpp b/src/main.cpp
index c172687..6acbfdb 100644
--- a/src/main.cpp
+++ b/src/main.cpp
@@ -2,11 +2,14 @@
 
 #include "wifi.h"
 #include "player.h"
+#include "playlist.h"
 
 void setup() {
   delay(500);
   Serial.begin(115200);
   playerSetup();
+  playlistClear();
+  playlistAdd("http://liveradio.sr.de/sr/sr1/mp3/128/stream.mp3");
 }
 
 void loop() {
diff --git a/src/player.cpp b/src/player.cpp
index 4c45674..4962ed3 100644
--- a/src/player.cpp
+++ b/src/player.cpp
@@ -3,6 +3,7 @@
 #include <Arduino.h>
 
 #include "audio.h"
+#include "playlist.h"
 
 #define DELAY_MS_ADD    250UL
 #define DELAY_MS_MAX    5000UL
@@ -23,14 +24,10 @@ void playerLoop() {
   if (errorMs > 0 && millis() - errorMs < delayMs) {
     return;
   }
-  playerNext();
-}
-
-void playerNext() {
-  playerPlay("http://liveradio.sr.de/sr/sr1/mp3/128/stream.mp3");
-}
-
-void playerPlay(const String &url) {
+  const auto url = playlistNextOrRepeatOneIfEnabled();
+  if (url.isEmpty()) {
+    return;
+  }
   if (audioPlay(url)) {
     errorMs = 0;
     delayMs = 0;
diff --git a/src/player.h b/src/player.h
index cb73716..c280aa6 100644
--- a/src/player.h
+++ b/src/player.h
@@ -1,12 +1,6 @@
 #ifndef PLAYER_H
 #define PLAYER_H
 
-#include <WString.h>
-
-void playerNext();
-
-void playerPlay(const String &url);
-
 void playerSetup();
 
 void playerLoop();
diff --git a/src/playlist.cpp b/src/playlist.cpp
new file mode 100644
index 0000000..881d025
--- /dev/null
+++ b/src/playlist.cpp
@@ -0,0 +1,91 @@
+#include "playlist.h"
+
+#include <SD.h>
+
+#include "AudioTools/AudioLibs/I2SCodecStream.h"
+#include <vector>
+
+bool playlistRepeatOne = false;
+
+bool playlistRepeatAll = false;
+
+bool playlistRandom = false;
+
+String playlistTitle = "";
+
+size_t playlistIndex = 0;
+
+std::vector<String> playlistEntries;
+
+void playlistClear() {
+  playlistTitle = "";
+  playlistIndex = 0;
+  playlistEntries.clear();
+  std::vector<String>().swap(playlistEntries);
+}
+
+void playlistAdd(String url) {
+  url.trim();
+  if (url.startsWith("http://") || url.startsWith("https://") || url.startsWith("sd://") || url.startsWith("snap://")) {
+    playlistEntries.push_back(url);
+  } else if (url.startsWith("title://")) {
+    playlistTitle = url.substring(8);
+  }
+}
+
+void playlistLoad(const String &path) {
+  playlistClear();
+  Serial.println("[PLAYLIST] Loading playlist: " + path);
+  if (!SD.begin(PIN_AUDIO_KIT_SD_CARD_CS)) {
+    Serial.println("[PLAYLIST] Failed to initialize SD card.");
+    return;
+  }
+  if (!SD.exists(path)) {
+    Serial.println("[PLAYLIST] File not found.");
+    return;
+  }
+  auto file = SD.open(path, FILE_READ);
+  if (!file) {
+    Serial.println("[PLAYLIST] Failed to open file.");
+  }
+
+  while (file.available() > 0) {
+    String entry = file.readStringUntil('\n');
+    playlistAdd(entry);
+  }
+  file.close();
+}
+
+String playlistSet(const size_t index) {
+  const auto size = playlistEntries.size();
+  if (size == 0) {
+    return "";
+  }
+  playlistIndex = (index % size + size) % size;
+  return playlistEntries[playlistIndex];
+}
+
+String playlistCurrent() {
+  return playlistSet(playlistIndex);
+}
+
+String playlistNext() {
+  if (playlistIndex >= playlistEntries.size() - 1 && !playlistRepeatAll) {
+    return "";
+  }
+  return playlistSet(playlistIndex + 1);
+}
+
+String playlistNextOrRepeatOneIfEnabled() {
+  if (playlistRepeatOne) {
+    return playlistCurrent();
+  }
+  return playlistNext();
+}
+
+String playlistPrevious() {
+  if (playlistIndex <= 0 && !playlistRepeatAll) {
+    return "";
+  }
+  return playlistSet(playlistIndex - 1);
+}
diff --git a/src/playlist.h b/src/playlist.h
new file mode 100644
index 0000000..8e37571
--- /dev/null
+++ b/src/playlist.h
@@ -0,0 +1,20 @@
+#ifndef PLAYLIST_H
+#define PLAYLIST_H
+
+#include <WString.h>
+
+void playlistClear();
+
+void playlistAdd(String url);
+
+void playlistLoad(const String &path);
+
+String playlistCurrent();
+
+String playlistNext();
+
+String playlistNextOrRepeatOneIfEnabled();
+
+String playlistPrevious();
+
+#endif