Create FATFS FileSource for ESP8266Audio

Author: SciLor

AudioFileSourceFatFs.cpp

@@ -0,0 +1,81 @@
+/*
+  AudioFileSourceSPIFFS
+  Input SD card "file" to be used by AudioGenerator
+  
+  Copyright (C) 2017  Earle F. Philhower, III
+
+  This program is free software: you can redistribute it and/or modify
+  it under the terms of the GNU General Public License as published by
+  the Free Software Foundation, either version 3 of the License, or
+  (at your option) any later version.
+
+  This program is distributed in the hope that it will be useful,
+  but WITHOUT ANY WARRANTY; without even the implied warranty of
+  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+  GNU General Public License for more details.
+
+  You should have received a copy of the GNU General Public License
+  along with this program.  If not, see <http://www.gnu.org/licenses/>.
+*/
+
+#include "AudioFileSourceFatFs.h"
+
+AudioFileSourceFatFs::AudioFileSourceFatFs()
+{
+  _isOpen = false;
+}
+
+AudioFileSourceFatFs::AudioFileSourceFatFs(const char *filename)
+{
+  _isOpen = false;
+  open(filename);
+}
+
+bool AudioFileSourceFatFs::open(const char *filename)
+{
+  if (_isOpen) file.close();
+  _isOpen = file.open((char*)filename, FA_OPEN_EXISTING | FA_READ);
+  return _isOpen;
+}
+
+AudioFileSourceFatFs::~AudioFileSourceFatFs()
+{
+  if (_isOpen) file.close();
+}
+
+uint32_t AudioFileSourceFatFs::read(void *data, uint32_t len)
+{
+  return file.read(data, len);
+}
+
+bool AudioFileSourceFatFs::seek(int32_t pos, int dir)
+{
+  if (!_isOpen) return false;
+  if (dir==SEEK_SET) return file.seekSet(pos);
+  else if (dir==SEEK_CUR) return file.seekSet(file.curPosition() + pos);
+  else if (dir==SEEK_END) return file.seekSet(file.fileSize() + pos);
+  return false;
+}
+
+bool AudioFileSourceFatFs::close()
+{
+  _isOpen = false;
+  return file.close();
+}
+
+bool AudioFileSourceFatFs::isOpen()
+{
+  return _isOpen;
+}
+
+uint32_t AudioFileSourceFatFs::getSize()
+{
+  if (!_isOpen) return 0;
+  return file.fileSize();
+}
+
+uint32_t AudioFileSourceFatFs::getPos()
+{
+  if (!_isOpen) return 0;
+  return file.curPosition();
+}

AudioFileSourceFatFs.h

@@ -0,0 +1,49 @@
+/*
+  AudioFileSourceSPIFFS
+  Input SD card "file" to be used by AudioGenerator
+  
+  Copyright (C) 2017  Earle F. Philhower, III
+
+  This program is free software: you can redistribute it and/or modify
+  it under the terms of the GNU General Public License as published by
+  the Free Software Foundation, either version 3 of the License, or
+  (at your option) any later version.
+
+  This program is distributed in the hope that it will be useful,
+  but WITHOUT ANY WARRANTY; without even the implied warranty of
+  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+  GNU General Public License for more details.
+
+  You should have received a copy of the GNU General Public License
+  along with this program.  If not, see <http://www.gnu.org/licenses/>.
+*/
+
+#ifndef _AUDIOFILESOURCEFATFS_H
+#define _AUDIOFILESOURCEFATFS_H
+
+#include "AudioFileSource.h"
+#include <FatFs.h>
+
+class AudioFileSourceFatFs : public AudioFileSource
+{
+  public:
+    AudioFileSourceFatFs();
+    AudioFileSourceFatFs(const char *filename);
+    virtual ~AudioFileSourceFatFs() override;
+    
+    virtual bool open(const char *filename) override;
+    virtual uint32_t read(void *data, uint32_t len) override;
+    virtual bool seek(int32_t pos, int dir) override;
+    virtual bool close() override;
+    virtual bool isOpen() override;
+    virtual uint32_t getSize() override;
+    virtual uint32_t getPos() override;
+
+  private:
+    FileFs file;
+    bool _isOpen;
+};
+
+
+#endif
+