fork from github

tests/host/mp3.cpp

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+#include <Arduino.h>
+#include "AudioFileSourceSTDIO.h"
+#include "AudioOutputSTDIO.h"
+#include "AudioGeneratorMP3.h"
+#include "AudioFileSourceID3.h"
+#include "AudioFileSourceBuffer.h"
+#include "AudioOutputMixer.h"
+
+#define MP3 "../../examples/PlayMP3FromSPIFFS/data/pno-cs.mp3"
+
+// Called when a metadata event occurs (i.e. an ID3 tag, an ICY block, etc.
+void MDCallback(void *cbData, const char *type, bool isUnicode, const char *string)
+{
+  (void)cbData;
+  Serial.printf("ID3 callback for: %s = '", type);
+
+  if (isUnicode) {
+    string += 2;
+  }
+  
+  while (*string) {
+    char a = *(string++);
+    if (isUnicode) {
+      string++;
+    }
+    Serial.printf("%c", a);
+  }
+  Serial.printf("'\n");
+  Serial.flush();
+}
+
+
+// Called when there's a warning or error (like a buffer underflow or decode hiccup)
+void StatusCallback(void *cbData, int code, const char *string)
+{
+  const char *ptr = reinterpret_cast<const char *>(cbData);
+  // Note that the string may be in PROGMEM, so copy it to RAM for printf
+  char s1[64];
+  strncpy_P(s1, string, sizeof(s1));
+  s1[sizeof(s1)-1]=0;
+  Serial.printf("STATUS(%s) '%d' = '%s'\n", ptr, code, s1);
+  Serial.flush();
+}
+
+
+int main(int argc, char **argv)
+{
+    (void) argc;
+    (void) argv;
+    AudioFileSourceSTDIO *in = new AudioFileSourceSTDIO(MP3);
+    AudioFileSourceBuffer *buff = new AudioFileSourceBuffer(in, 2048);
+    buff->RegisterStatusCB(StatusCallback, (void*)"buffer");
+    AudioFileSourceID3 *id3 = new AudioFileSourceID3(buff);
+    id3->RegisterMetadataCB(MDCallback, (void*)"ID3TAG");
+    AudioOutputSTDIO *out = new AudioOutputSTDIO();
+    out->SetFilename("jamonit.wav");
+    AudioOutputMixer *mix = new AudioOutputMixer(17, out);
+    AudioOutputMixerStub *stub = mix->NewInput();
+    void *space = malloc(29192);
+    AudioGeneratorMP3 *mp3 = new AudioGeneratorMP3(space, 29192);
+
+    mp3->begin(id3, stub);
+    while (mp3->loop()) { /*noop*/ }
+    mp3->stop();
+    out->stop();
+
+    free(space);
+    delete stub;
+    delete mix;
+    delete mp3;
+    delete out;
+    delete id3;
+    delete buff;
+    delete in;
+}