import esp audio lib

FW/leo_muziekdoos_sam51/lib/ESP8266Audio/src/libtinysoundfont/LICENSE

@@ -0,0 +1,20 @@
+Copyright (C) 2017 Bernhard Schelling
+Based on SFZero, Copyright (C) 2012 Steve Folta (https://github.com/stevefolta/SFZero)
+
+Permission is hereby granted, free of charge, to any person obtaining a copy of
+this software and associated documentation files (the "Software"), to deal in
+the Software without restriction, including without limitation the rights to
+use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies
+of the Software, and to permit persons to whom the Software is furnished to do
+so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.

FW/leo_muziekdoos_sam51/lib/ESP8266Audio/src/libtinysoundfont/README.ESP8266

@@ -0,0 +1,40 @@
+This is a ported and significantly modified version of TinySoundFont by
+Bernhard Schelling.   https://github.com/schellingb/TinySoundFont
+
+TinySoundFont lets you use a SoundFont2 library (sampled MIDI instruments)
+to play high quality music with a single #include.
+
+Porting and modifications done by Earle F. Philhower, III 
+<earlephilhower@yahoo.com> and released under the GPL v3 or later.
+
+The changes to allow it to work on the ESP8266 consisted mostly in making
+it significantly less memory intensive and speeding up the inner loops by
+ using fixed point arithmetic instead of floating point.  This change to
+fixed point lets us use simple integer math, which is massively faster than
+the software FP libraries on the ESP8266, but does come at the cost of a
+slightly increased noise floor.
+
+On the memory side, all data structures were converted into a "lazy"
+allocation which means that instead of loading the full contents of the
+header bits into RAM (which is often WAY more than the 40KB available on
+the EPS8266), only those bits needed are loaded, and only when they are
+needed.
+
+Also, instead of loading the entire sample array into memory (i.e. nearly
+500MB for a good piano sample), only a very small portion is loaded into a
+LRU *cache* area.
+
+Even with the caching, it was found that SPIFFS, while having great
+functionality, was horrbly slow.  So I wrote a new "faster" ROM filesystem
+called, surprisingly, FastROMFilesystem.
+https://github.com/earlephilhower/ESP8266FastROMFS
+If you are getting choppy playback, try this new filesytem or using a SD
+card (not tested by myself, but it'd be hard top be slower than SPIFFS).
+Simply going from SPIFFS to FastROMFilesystem took my testing of
+FURELISE.MID and 1MGM.SF2 from 0.5x realtime to 2.5x (i.e. from unusable
+stuttering to plenty of time to do other tings on the ESP8266) for the
+first 20 seconds or so tested.
+
+-Earle F. Philhower, III
+ earlephilhower@yahoo.com
+

FW/leo_muziekdoos_sam51/lib/ESP8266Audio/src/libtinysoundfont/README.md

@@ -0,0 +1,37 @@
+# TinySoundFont
+SoundFont2 synthesizer library in a single C/C++ file
+
+## Overview
+
+TinySoundFont is a software synthesizer using SoundFont2 sound bank files.
+
+The library is a single C header file so it is extremely simple to integrate in your C/C++ projects.
+
+```c++
+#define TSF_IMPLEMENTATION
+#include "tsf.h"
+
+...
+
+tsf* TinySoundFont = tsf_load_filename("soundfont.sf2");
+tsf_set_output(TinySoundFont, TSF_MONO, 44100, 0); //sample rate
+tsf_note_on(TinySoundFont, 0, 60, 1.0f); //preset 0, middle C
+short HalfSecond[22050]; //synthesize 0.5 seconds
+tsf_render_short(TinySoundFont, HalfSecond, 22050, 0);
+```
+
+The library code is based on [SFZero by Steve Folta](https://github.com/stevefolta/SFZero).
+
+## Documentation
+
+The API documentation can be found on [top of the library source code](https://github.com/schellingb/TinySoundFont/blob/master/tsf.h).
+
+There are also [examples available](https://github.com/schellingb/TinySoundFont/tree/master/examples) which come with a sample SoundFont file and build and play sound on Win32, Win64, Linux and MacOSX with no further dependencies.
+
+## Dependencies
+
+C standard libraries for fopen, math and malloc (can be removed by providing custom functions with #defines).
+
+## License
+
+TinySoundFont is available under the [MIT license](https://choosealicense.com/licenses/mit/).