97 lines
2.5 KiB
C++
97 lines
2.5 KiB
C++
#include "playlist_manager.h"
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#include "spi_master.h"
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#include <SD.h>
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PlaylistManager::PlaylistManager() {
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SPIMaster::enable_sd();
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current_rfid_tag_id = String("");
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File root = SD.open("/");
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while(File entry = root.openNextFile()) {
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if (entry.isDirectory()) {
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String filename("/");
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filename.concat(entry.name());
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if (!filename.startsWith("/.")) {
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Serial.println(filename);
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dirs.push_back(filename);
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}
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}
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}
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if (!SD.exists("/_mapping.txt")) {
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Serial.println("WARNING: /_mapping.txt not found!");
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} else {
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map.clear();
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File f = SD.open("/_mapping.txt");
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Serial.println(" Reading /_mapping.txt...");
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while (f.available()) {
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char buffer[512];
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size_t pos = f.readBytesUntil('\n', buffer, 511);
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buffer[pos] = '\0';
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String data = buffer;
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uint8_t eq = data.indexOf('=');
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if (eq>0 && eq<data.length()-1) {
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String rfid_id = data.substring(0, eq);
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String folder = data.substring(eq + 1);
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Serial.printf(" Adding mapping: %s=>%s\n", rfid_id.c_str(), folder.c_str());
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map[rfid_id] = folder;
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if (folder.charAt(0)=='/') {
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bool found=false;
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for (String f: dirs) {
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if (f.equals(folder)) {
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found = true;
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break;
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}
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}
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if (!found) {
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Serial.printf("WARNING: Found mapping for RFID id %s which maps to non-existing folder %s!\n", rfid_id.c_str(), folder.c_str());
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}
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}
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}
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}
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f.close();
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}
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root.close();
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}
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Playlist PlaylistManager::get_playlist(String rfid_id) {
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if (rfid_id.equals(current_rfid_tag_id)) {
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return current_playlist;
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} else {
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if (map.count(rfid_id)==0) {
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Serial.printf("No known playlist for id %s.\n", rfid_id);
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return current_playlist;
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} else {
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current_playlist = Playlist(rfid_id);
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String path = map[rfid_id];
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if (path.startsWith("/")) {
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File dir = SD.open(path);
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while(File entry = dir.openNextFile()) {
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String filename = entry.name();
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String ext = filename.substring(filename.length()-4);
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if (!entry.isDirectory() &&
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!filename.startsWith(".") &&
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ext.equals(".mp3")) {
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Serial.printf("Adding %s to the list of files\n", (path + "/" + filename).c_str());
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current_playlist.add_file(path + "/" + filename);
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}
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entry.close();
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}
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dir.close();
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}
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current_playlist.sort();
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current_rfid_tag_id = rfid_id;
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return current_playlist;
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}
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}
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}
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void PlaylistManager::set_audio_current_time(uint32_t time) {
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audio_current_time = time;
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}
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bool PlaylistManager::has_playlist(String rfid_id) {
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return map.count(rfid_id) == 1;
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} |