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ESP32-audioI2S
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/*
* Audio.cpp
*
* Created on: Oct 26,2018
* Updated on: Dec 16,2018
* Author: Wolle
*
* This library plays mp3 files from SD card or icy-webstream via I2S
* no DAC, no DeltSigma
*
* etrernal HW on I2S nessesary, e.g.MAX98357A
*/
#include "Audio.h"
#include "mp3_decoder/mp3_decoder.h"
HMP3Decoder mp3decoder; // Helix MP3 decoder
//---------------------------------------------------------------------------------------------------------------------
Audio::Audio() {
//i2s configuration
m_i2s_num = I2S_NUM_0; // i2s port number
i2s_config_t i2s_config = {
.mode = (i2s_mode_t)(I2S_MODE_MASTER | I2S_MODE_TX),
.sample_rate = 16000,
.bits_per_sample = I2S_BITS_PER_SAMPLE_16BIT,
.channel_format = I2S_CHANNEL_FMT_RIGHT_LEFT,
.communication_format = (i2s_comm_format_t)(I2S_COMM_FORMAT_I2S | I2S_COMM_FORMAT_I2S_MSB),
.intr_alloc_flags = ESP_INTR_FLAG_LEVEL1, // high interrupt priority
.dma_buf_count = 8,
.dma_buf_len = 64, //Interrupt level 1
.use_apll=APLL_DISABLE,
.tx_desc_auto_clear=true, // new in V1.0.1
.fixed_mclk=-1
};
i2s_driver_install((i2s_port_t)m_i2s_num, &i2s_config, 0, NULL);
m_BCLK=26; // Bit Clock
m_LRC=25; // Left/Right Clock
m_DOUT=27; // Data Out
setPinout(m_BCLK, m_LRC, m_DOUT);
}
//---------------------------------------------------------------------------------------------------------------------
esp_err_t Audio::I2Sstart(uint8_t i2s_num){
return i2s_start((i2s_port_t) i2s_num);
}
esp_err_t Audio::I2Sstop(uint8_t i2s_num){
return i2s_stop((i2s_port_t) i2s_num);
}
//---------------------------------------------------------------------------------------------------------------------
Audio::~Audio() {
I2Sstop(m_i2s_num);
}
//---------------------------------------------------------------------------------------------------------------------
bool Audio::connecttohost(String host){
int inx; // Position of ":" in hostname
int port=80; // Port number for host
String extension="/"; // May be like "/mp3" in "skonto.ls.lv:8002/mp3"
String hostwoext; // Host without extension and portnumber
String headerdata="";
stopSong();
m_f_localfile=false;
m_f_webstream=true;
if(m_lastHost!=host){ // New host or reconnection?
m_lastHost=host; // Remember the current host
}
sprintf(chbuf, "Connect to new host: %s", host.c_str());
if(audio_info) audio_info(chbuf);
// initializationsequence
m_f_ctseen=false; // Contents type not seen yet
m_f_mp3=false; // Set if stream is mp3
m_f_aac=false; // Set if stream is aac
m_f_firststream_ready=false;
m_f_firstmetabyte=false;
m_f_chunked=false; // Assume not chunked
m_f_ssl=false;
m_f_swm=true; // Assume no metaint
m_f_playing=false;
m_count=0;
m_chunkcount=0;
m_metaint=0; // No metaint yet
m_LFcount=0; // For detection end of header
m_bitrate=0; // Bitrate still unknown
m_totalcount=0; // Reset totalcount
m_metaline=""; // No metadata yet
m_icyname=""; // No StationName yet
m_st_remember=""; // Delete the last streamtitle
m_inBuffwindex=0;
m_inbuffrindex=0;
setDatamode(AUDIO_HEADER); // Handle header
// for(int i=0; i< sizeof(m_outBuff)/sizeof(m_outBuff[0]); i++) m_outBuff[i]=0;//Clear OutputBuffer
if(host.startsWith("http://")) {host=host.substring(7); m_f_ssl=false; ;}
if(host.startsWith("https://")){host=host.substring(8); m_f_ssl=true; port=443;}
clientsecure.stop(); clientsecure.flush(); // release memory
if(host.endsWith(".m3u")||
host.endsWith(".pls")||
host.endsWith("asx")){ // Is it an m3u or pls or asx playlist?
m_playlist=host; // Save copy of playlist URL
m_datamode=AUDIO_PLAYLISTINIT; // Yes, start in PLAYLIST mode
if(m_playlist_num == 0){ // First entry to play?
m_playlist_num=1; // Yes, set index
}
sprintf(chbuf, "Playlist request, entry %d", m_playlist_num);
if(audio_info) audio_info(chbuf); // Most of the time there are zero bytes of metadata
}
// In the URL there may be an extension, like noisefm.ru:8000/play.m3u&t=.m3u
inx=host.indexOf("/"); // Search for begin of extension
if(inx > 0){ // Is there an extension?
extension=host.substring(inx); // Yes, change the default
hostwoext=host.substring(0, inx); // Host without extension
}
// In the URL there may be a portnumber
inx=host.indexOf(":"); // Search for separator
if(inx >= 0){ // Portnumber available?
port=host.substring(inx + 1).toInt(); // Get portnumber as integer
hostwoext=host.substring(0, inx); // Host without portnumber
}
sprintf(chbuf, "Connect to %s on port %d, extension %s",
hostwoext.c_str(), port, extension.c_str());
if(audio_info) audio_info(chbuf);
if(audio_showstreaminfo) audio_showstreaminfo(chbuf);
String resp=String("GET ") + extension +
String(" HTTP/1.1\r\n") +
String("Host: ") + hostwoext +
String("\r\n") +
String("Icy-MetaData:1\r\n") +
String("Connection: close\r\n\r\n");
if(m_f_ssl==false){
if(client.connect(hostwoext.c_str(), port)){
if(audio_info) audio_info("Connected to server");
client.print(resp);
m_f_running=true;
return true;
}
}
if(m_f_ssl==true){
if(clientsecure.connect(hostwoext.c_str(), port)){
if(audio_info) audio_info("SSL/TLS Connected to server");
clientsecure.print(resp);
m_f_running=true;
return true;
}
}
sprintf(chbuf, "Request %s failed!", host.c_str());
if(audio_info) audio_info(chbuf);
if(audio_showstation) audio_showstation("");
if(audio_showstreamtitle) audio_showstreamtitle("");
if(audio_showstreaminfo) audio_showstreaminfo("");
return false;
}
//-----------------------------------------------------------------------------------------------------------------------------------
bool Audio::connecttoSD(String sdfile){
const uint8_t ascii[60]={
//196, 197, 198, 199, 200, 201, 202, 203, 204, 205, 206, 207, 208, 209, 210, 211, 212, 213, 214, 215, ISO
142, 143, 146, 128, 000, 144, 000, 000, 000, 000, 000, 000, 000, 165, 000, 000, 000, 000, 153, 000, //ASCII
//216, 217, 218, 219, 220, 221, 222, 223, 224, 225, 226, 227, 228, 229, 230, 231, 232, 233, 234, 235, ISO
000, 000, 000, 000, 154, 000, 000, 225, 133, 000, 000, 000, 132, 143, 145, 135, 138, 130, 136, 137, //ASCII
//236, 237, 238, 239, 240, 241, 242, 243, 244, 245, 246, 247, 248, 249, 250, 251, 252, 253, 254, 255 ISO
000, 161, 140, 139, 000, 164, 000, 162, 147, 000, 148, 000, 000, 000, 163, 150, 129, 000, 000, 152};//ASCII
uint16_t i=0, s=0;
stopSong();
m_f_playing=false;
m_inBuffwindex=0;
m_inbuffrindex=0;
clientsecure.stop(); clientsecure.flush(); // release memory if allocated
m_f_localfile=true;
m_f_webstream=false;
m_f_stream=false;
m_f_mp3=true;
memset(m_outBuff, 0, sizeof(m_outBuff)); //Clear OutputBuffer
if(!sdfile.startsWith("/")) sdfile="/"+sdfile;
while(sdfile[i] != 0){ //convert UTF8 to ASCII
path[i]=sdfile[i];
if(path[i] > 195){
s=ascii[path[i]-196];
if(s!=0) path[i]=s; // found a related ASCII sign
} i++;
}
path[i]=0;
m_mp3title=sdfile.substring(sdfile.lastIndexOf('/') + 1, sdfile.length());
sprintf(chbuf, "Reading file: %s", m_mp3title.c_str());
if(audio_info) audio_info(chbuf);
fs::FS &fs=SD;
mp3file=fs.open(path);
if(!mp3file){
if(audio_info) audio_info("Failed to open file for reading");
return false;
}
mp3file.readBytes(chbuf, 10);
if ((chbuf[0] != 'I') || (chbuf[1] != 'D') || (chbuf[2] != '3')) {
if(audio_info) audio_info("file has no mp3 tag, skip metadata");
setFilePos(0);
m_f_running=true;
return false;
}
m_rev = chbuf[3];
switch (m_rev) {
case 2:
m_f_unsync = (chbuf[5] & 0x80);
m_f_exthdr = false;
break;
case 3:
case 4:
m_f_unsync = (chbuf[5] & 0x80); // bit7
m_f_exthdr = (chbuf[5] & 0x40); // bit6 extended header
break;
};
m_id3Size = chbuf[6]; m_id3Size = m_id3Size << 7;
m_id3Size |= chbuf[7]; m_id3Size = m_id3Size << 7;
m_id3Size |= chbuf[8]; m_id3Size = m_id3Size << 7;
m_id3Size |= chbuf[9];
// Every read from now may be unsync'd
sprintf(chbuf, "ID3 version=%i", m_rev);
if(audio_info) audio_info(chbuf);
sprintf(chbuf,"ID3 framesSize=%i", m_id3Size);
if(audio_info) audio_info(chbuf);
readID3Metadata();
m_f_running=true;
return true;
}
//---------------------------------------------------------------------------------------------------------------------
bool Audio::connecttospeech(String speech, String lang){
String host="translate.google.com";
String path="/translate_tts";
uint16_t free=0;
m_f_playing=false;
// m_f_firststream_ready=false;
m_f_localfile=false;
m_f_webstream=false;
m_f_ssl=true;
stopSong();
clientsecure.stop(); clientsecure.flush(); // release memory if allocated
String resp= String("GET / HTTP/1.0\r\n") +
String("Host: ") + host + String("\r\n") +
String("User-Agent: GoogleTTS for ESP32/1.0.0\r\n") +
String("Accept-Encoding: identity\r\n") +
String("Accept: text/html\r\n\r\n");
if (!clientsecure.connect(host.c_str(), 443)) {
Serial.println("Connection failed");
return false;
}
clientsecure.print(resp);
while (clientsecure.connected()) { // read the header
String line = clientsecure.readStringUntil('\n');
line+="\n";
if (line == "\r\n") break;
}
String tkkFunc="";
char ch;
do { // search for TKK
tkkFunc = "";
clientsecure.readBytes(&ch, 1);
if (ch != 't') continue;
tkkFunc += String(ch);
clientsecure.readBytes(&ch, 1);
if (ch != 'k') continue;
tkkFunc += String(ch);
clientsecure.readBytes(&ch, 1);
if (ch != 'k') continue;
tkkFunc += String(ch);
clientsecure.readBytes(&ch, 1);
if (ch != ':') continue;
tkkFunc += String(ch);
} while(tkkFunc.length() < 4);
tkkFunc += clientsecure.readStringUntil(','); // "TKK='xxxxxxxxx.yyyyyyyyy'"
tkkFunc = tkkFunc.substring(5 /* length of "TKK='" */, tkkFunc.lastIndexOf('\''));
log_i("tkkFunc_%s", tkkFunc.c_str());
// create token
int periodPos = tkkFunc.indexOf('.');
String key1 = tkkFunc.substring(0,periodPos);
String key2 = tkkFunc.substring(periodPos + 1);
long long int a, b;
a = b = strtoll(key1.c_str(), NULL, 10);
int f;
int len = strlen(speech.c_str());
for (f = 0; f < len; f++) {
a += speech[f];
a = XL(a, "+-a^+6");
}
a = XL(a, "+-3^+b+-f");
a = a ^ (strtoll(key2.c_str(), NULL, 10));
if (0 > a) {
a = (a & 2147483647) + 2147483648;
}
a = a % 1000000;
String token=String(lltoa(a, 10)) + '.' + lltoa(a ^ b, 10);
int i,j;
const char* t = speech.c_str();
for(i=0,j=0;i<strlen(t);i++) {
if (t[i] < 0x80 || t[i] > 0xbf) {
j++;
}
}
// log_i("Token=%s", token.c_str());
String tts= String("https://") + host + path +
"?ie=UTF-8&q=" + urlencode(speech) +
"&tl=" + lang +
"&textlen=" + String(j) +
"&tk=" + token +
"&total=1&idx=0&client=t&prev=input&ttsspeed=1";
clientsecure.stop(); clientsecure.flush();
resp= String("GET ") + tts + String("HTTP/1.1\r\n") +
String("Host: ") + host + String("\r\n") +
String("Connection: close\r\n\r\n");
if (!clientsecure.connect(host.c_str(), 443)) {
Serial.println("Connection failed");
return false;
}
clientsecure.print(resp);
while (clientsecure.connected()) {
String line = clientsecure.readStringUntil('\n');
line+="\n";
// if(audio_info) audio_info(line.c_str());
if (line == "\r\n") break;
}
m_inBuffwindex=0;
m_f_mp3=true;
uint16_t res;
while(clientsecure.available()==0){;}
while(clientsecure.available() > 0) {
free=m_inBuffsize-m_inBuffwindex;// free space
res=clientsecure.read(m_inBuff + m_inBuffwindex, free);
if(res>0){
m_inBuffwindex+=res;
free-=res;
}
if(free==0){
int x=sendBytes(m_inBuff, m_inBuffsize);
m_inBuffwindex-=x;
memmove(m_inBuff, m_inBuff + x , m_inBuffsize-x);
}
}
m_inBuffwindex-=sendBytes(m_inBuff, m_inBuffsize-free);
if(audio_eof_mp3) audio_eof_mp3(chbuf);
stopSong();
clientsecure.stop(); clientsecure.flush();
m_f_mp3=false;
if(audio_eof_speech) audio_eof_speech(speech.c_str());
return true;
}
//---------------------------------------------------------------------------------------------------------------------
long long int Audio::XL (long long int a, const char* b) {
int len = strlen(b);
for (int c = 0; c < len - 2; c += 3) {
int d = (long long int)b[c + 2];
d = d >= 97 ? d - 87 : d - 48;
d = (b[c + 1] == '+' ? a >> d : a << d);
a = b[c] == '+' ? (a + d) & 4294967295 : a ^ d;
}
return a;
}
//---------------------------------------------------------------------------------------------------------------------
char* Audio::lltoa(long long val, int base){
static char buf[64] = {0};
static char chn=0;
int i = 62;
int sign = (val < 0);
if(sign) val = -val;
if(val == 0) return &chn;
for(; val && i ; --i, val /= base) {
buf[i] = "0123456789abcdef"[val % base];
}
if(sign) {
buf[i--] = '-';
}
return &buf[i+1];
}
//---------------------------------------------------------------------------------------------------------------------
String Audio::urlencode(String str){
String encodedString="";
char c;
char code0;
char code1;
for (int i =0; i < str.length(); i++){
c=str.charAt(i);
if (c == ' ') encodedString+= '+';
else if (isalnum(c)) encodedString+=c;
else{
code1=(c & 0xf)+'0';
if ((c & 0xf) >9) code1=(c & 0xf) - 10 + 'A';
c=(c>>4)&0xf;
code0=c+'0';
if (c > 9) code0=c - 10 + 'A';
encodedString+='%';
encodedString+=code0;
encodedString+=code1;
}
}
return encodedString;
}
//---------------------------------------------------------------------------------------------------------------------
void Audio::readID3Metadata(){
char frameid[5];
int framesize=0;
bool compressed;
char value[256];
bool bitorder=false;
uint8_t uni_h=0;
uint8_t uni_l=0;
String tag="";
if (m_f_exthdr) {
if(audio_info) audio_info("ID3 extended header");
int ehsz = (mp3file.read() << 24) | (mp3file.read() << 16)
| (mp3file.read() << 8) | (mp3file.read());
m_id3Size -= 4;
for (int j = 0; j < ehsz - 4; j++) {
mp3file.read();
m_id3Size--;
} // Throw it away
} else
if(audio_info) audio_info("ID3 normal frames");
do {
frameid[0] = mp3file.read();
frameid[1] = mp3file.read();
frameid[2] = mp3file.read();
m_id3Size -= 3;
if (m_rev == 2) frameid[3] = 0;
else {frameid[3] = mp3file.read(); m_id3Size--;}
frameid[4]=0; // terminate the string
tag=frameid;
if(frameid[0]==0 && frameid[1]==0 && frameid[2]==0 && frameid[3]==0){
// We're in padding
while (m_id3Size != 0){mp3file.read(); m_id3Size--;}
}
else{
if(m_rev==2){
framesize = (mp3file.read() << 16) | (mp3file.read() << 8) | (mp3file.read());
m_id3Size -= 3;
compressed = false;
}
else{
framesize = (mp3file.read() << 24) | (mp3file.read() << 16) | (mp3file.read() << 8) | (mp3file.read());
m_id3Size -= 4;
mp3file.read(); // skip 1st flag
m_id3Size--;
compressed = mp3file.read() & 0x80;
m_id3Size--;
}
if(compressed){
log_i("iscompressed");
int decompsize=(mp3file.read()<<24) | (mp3file.read()<<16) | (mp3file.read()<<8) | (mp3file.read());
m_id3Size -= 4;
(void) decompsize;
for (int j = 0; j < framesize; j++){
mp3file.read();
m_id3Size--;
}
}
// Read the value
uint32_t i=0; uint16_t j=0, k=0, m=0;
bool isUnicode;
if(framesize>0){
isUnicode = (mp3file.read() == 1) ? true : false;
m_id3Size--;
if(framesize<256){
mp3file.readBytes(value, framesize-1); m_id3Size-=framesize-1;
i=framesize-1; value[framesize-1]=0;
}
else{
if(tag=="APIC"){ // a image embedded in file, skip it
//log_i("it's a image");
setFilePos(getFilePos()+framesize-1); m_id3Size-=framesize-1;
}
else{
// store the first 255 bytes in buffer and cut the remains
mp3file.readBytes(value, 255); m_id3Size-=255;
value[255]=0; i=255;
// big block, skip it
setFilePos(getFilePos()+framesize-1-255); m_id3Size-=framesize-1;
}
}
if(isUnicode){ // convert unicode to utf-8 U+0020...U+07FF
j=0; m=0;
while(m<i-1){
if((value[m]==0xFE)&&(value[m+1]==0xFF)){bitorder=true; j=m+2;}// MSB/LSB
if((value[m]==0xFF)&&(value[m+1]==0xFE)){bitorder=false; j=m+2;}//LSB/MSB
m++;
} // seek for last bitorder
m=0;
if(j>0){
for(k=j; k<i-1; k+=2){
if(bitorder==true){uni_h=value[k]; uni_l=value[k+1];}
else {uni_l=value[k]; uni_h=value[k+1];}
uint16_t uni_hl=(uni_h<<8)+uni_l;
uint8_t utf8_h=(uni_hl>>6); // div64
uint8_t utf8_l=uni_l;
if(utf8_h>3){
utf8_h+=0xC0;
if (uni_l<0x40) utf8_l=uni_l+0x80;
else if(uni_l<0x80) utf8_l=uni_l+=0x40;
else if(uni_l<0xC0) utf8_l=uni_l;
else utf8_l=uni_l-0x40;
}
if(utf8_h>3) {value[m]= utf8_h; m++;}
value[m]=utf8_l; m++;
}
}value[m]=0; i=m;
}
}
chbuf[0]=0; j=0; k=0;
while(j<i){if(value[j]>0x19){value[k]=value[j]; k++;}else{i--;} j++;} //remove non printables
value[i]=0; // new termination
// Revision 2
if(tag=="CNT") sprintf(chbuf, "Play counter: %s", value);
if(tag=="COM") sprintf(chbuf, "Comments: %s", value);
if(tag=="CRA") sprintf(chbuf, "Audio encryption: %s", value);
if(tag=="CRM") sprintf(chbuf, "Encrypted meta frame: %s", value);
if(tag=="ETC") sprintf(chbuf, "Event timing codes: %s", value);
if(tag=="EQU") sprintf(chbuf, "Equalization: %s", value);
if(tag=="IPL") sprintf(chbuf, "Involved people list: %s", value);
if(tag=="PIC") sprintf(chbuf, "Attached picture: %s", value);
if(tag=="SLT") sprintf(chbuf, "Synchronized lyric/text: %s", value);
if(tag=="TAL") sprintf(chbuf, "Album/Movie/Show title: %s", value);
if(tag=="TBP") sprintf(chbuf, "BPM (Beats Per Minute): %s", value);
if(tag=="TCM") sprintf(chbuf, "Composer: %s", value);
if(tag=="TCO") sprintf(chbuf, "Content type: %s", value);
if(tag=="TCR") sprintf(chbuf, "Copyright message: %s", value);
if(tag=="TDA") sprintf(chbuf, "Date: %s", value);
if(tag=="TDY") sprintf(chbuf, "Playlist delay: %s", value);
if(tag=="TEN") sprintf(chbuf, "Encoded by: %s", value);
if(tag=="TFT") sprintf(chbuf, "File type: %s", value);
if(tag=="TIM") sprintf(chbuf, "Time: %s", value);
if(tag=="TKE") sprintf(chbuf, "Initial key: %s", value);
if(tag=="TLA") sprintf(chbuf, "Language(s): %s", value);
if(tag=="TLE") sprintf(chbuf, "Length: %s", value);
if(tag=="TMT") sprintf(chbuf, "Media type: %s", value);
if(tag=="TOA") sprintf(chbuf, "Original artist(s)/performer(s): %s", value);
if(tag=="TOF") sprintf(chbuf, "Original filename: %s", value);
if(tag=="TOL") sprintf(chbuf, "Original Lyricist(s)/text writer(s): %s", value);
if(tag=="TOR") sprintf(chbuf, "Original release year: %s", value);
if(tag=="TOT") sprintf(chbuf, "Original album/Movie/Show title: %s", value);
if(tag=="TP1") sprintf(chbuf, "Lead artist(s)/Lead performer(s)/Soloist(s)/Performing group: %s", value);
if(tag=="TP2") sprintf(chbuf, "Band/Orchestra/Accompaniment: %s", value);
if(tag=="TP3") sprintf(chbuf, "Conductor/Performer refinement: %s", value);
if(tag=="TP4") sprintf(chbuf, "Interpreted, remixed, or otherwise modified by: %s", value);
if(tag=="TPA") sprintf(chbuf, "Part of a set: %s", value);
if(tag=="TPB") sprintf(chbuf, "Publisher: %s", value);
if(tag=="TRC") sprintf(chbuf, "ISRC (International Standard Recording Code): %s", value);
if(tag=="TRD") sprintf(chbuf, "Recording dates: %s", value);
if(tag=="TRK") sprintf(chbuf, "Track number/Position in set: %s", value);
if(tag=="TSI") sprintf(chbuf, "Size: %s", value);
if(tag=="TSS") sprintf(chbuf, "Software/hardware and settings used for encoding: %s", value);
if(tag=="TT1") sprintf(chbuf, "Content group description: %s", value);
if(tag=="TT2") sprintf(chbuf, "Title/Songname/Content description: %s", value);
if(tag=="TT3") sprintf(chbuf, "Subtitle/Description refinement: %s", value);
if(tag=="TXT") sprintf(chbuf, "Lyricist/text writer: %s", value);
if(tag=="TXX") sprintf(chbuf, "User defined text information frame: %s", value);
if(tag=="TYE") sprintf(chbuf, "Year: %s", value);
if(tag=="UFI") sprintf(chbuf, "Unique file identifier: %s", value);
if(tag=="ULT") sprintf(chbuf, "Unsychronized lyric/text transcription: %s", value);
if(tag=="WAF") sprintf(chbuf, "Official audio file webpage: %s", value);
if(tag=="WAR") sprintf(chbuf, "Official artist/performer webpage: %s", value);
if(tag=="WAS") sprintf(chbuf, "Official audio source webpage: %s", value);
if(tag=="WCM") sprintf(chbuf, "Commercial information: %s", value);
if(tag=="WCP") sprintf(chbuf, "Copyright/Legal information: %s", value);
if(tag=="WPB") sprintf(chbuf, "Publishers official webpage: %s", value);
if(tag=="WXX") sprintf(chbuf, "User defined URL link frame: %s", value);
// Revision 3
if(tag=="COMM") sprintf(chbuf, "Comment: %s", value);
if(tag=="OWNE") sprintf(chbuf, "Ownership: %s", value);
if(tag=="PRIV") sprintf(chbuf, "Private: %s", value);
if(tag=="SYLT") sprintf(chbuf, "SynLyrics: %s", value);
if(tag=="TALB") sprintf(chbuf, "Album: %s", value);
if(tag=="TBPM") sprintf(chbuf, "BeatsPerMinute: %s", value);
if(tag=="TCMP") sprintf(chbuf, "Compilation: %s", value);
if(tag=="TCOM") sprintf(chbuf, "Composer: %s", value);
if(tag=="TCOP") sprintf(chbuf, "Copyright: %s", value);
if(tag=="TDAT") sprintf(chbuf, "Date: %s", value);
if(tag=="TEXT") sprintf(chbuf, "Lyricist: %s", value);
if(tag=="TIME") sprintf(chbuf, "Time: %s", value);
if(tag=="TIT1") sprintf(chbuf, "Grouping: %s", value);
if(tag=="TIT2") sprintf(chbuf, "Title: %s", value);
if(tag=="TIT3") sprintf(chbuf, "Subtitle: %s", value);
if(tag=="TLAN") sprintf(chbuf, "Language: %s", value);
if(tag=="TLEN") sprintf(chbuf, "Length: %s", value);
if(tag=="TMED") sprintf(chbuf, "Media: %s", value);
if(tag=="TOAL") sprintf(chbuf, "OriginalAlbum: %s", value);
if(tag=="TOPE") sprintf(chbuf, "OriginalArtist: %s", value);
if(tag=="TORY") sprintf(chbuf, "OriginalReleaseYear: %s", value);
if(tag=="TPE1") sprintf(chbuf, "Artist: %s", value);
if(tag=="TPE2") sprintf(chbuf, "Band: %s", value);
if(tag=="TPE3") sprintf(chbuf, "Conductor: %s", value);
if(tag=="TPE4") sprintf(chbuf, "InterpretedBy: %s", value);
if(tag=="TPOS") sprintf(chbuf, "PartOfSet: %s", value);
if(tag=="TPUB") sprintf(chbuf, "Publisher: %s", value);
if(tag=="TRCK") sprintf(chbuf, "Track: %s", value);
if(tag=="TRDA") sprintf(chbuf, "RecordingDates: %s", value);
if(tag=="TXXX") sprintf(chbuf, "UserDefinedText: %s", value);
if(tag=="TYER") sprintf(chbuf, "Year: %s", value);
if(tag=="USER") sprintf(chbuf, "TermsOfUse: %s", value);
if(tag=="USLT") sprintf(chbuf, "Lyrics: %s", value);
if(tag=="XDOR") sprintf(chbuf, "OriginalReleaseTime: %s", value);
if(chbuf[0]!=0) if(audio_id3data) audio_id3data(chbuf);
}
} while (m_id3Size > 0);
}
//---------------------------------------------------------------------------------------------------------------------
void Audio::stopSong(){
if(m_f_running){
m_f_running = false;
mp3file.close();
}
i2s_zero_dma_buffer((i2s_port_t)m_i2s_num);
memset(m_outBuff, 0, sizeof(m_outBuff)); //Clear OutputBuffer
}
//---------------------------------------------------------------------------------------------------------------------
bool Audio::playChunk(){
// If we've got data, try and pump it out...
if(m_channels==1){
while (m_validSamples) {
m_lastSample[0] = m_outBuff[m_curSample];
m_lastSample[1] = m_outBuff[m_curSample];
if (!playSample(m_lastSample)) {return false;} // Can't send
m_validSamples--;
m_curSample++;
}
}
if(m_channels==2){
while (m_validSamples) {
m_lastSample[0] = m_outBuff[m_curSample * 2];
m_lastSample[1] = m_outBuff[m_curSample * 2 + 1];
if (!playSample(m_lastSample)) {return false;} // Can't send
m_validSamples--;
m_curSample++;
}
}
return true;
}
//---------------------------------------------------------------------------------------------------------------------
void Audio::loop() {
uint16_t bcw=0; // bytes can write
int16_t res=0; // number of bytes getting from client
static uint32_t i=0; // Count loops if clientbuffer is empty
static uint32_t chunksize=0; // Chunkcount read from stream
if(!m_f_running) return; // Nothing to do here!
// - localfile - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
if(m_f_localfile){
bcw=m_inBuffsize-m_inBuffwindex;
res=mp3file.read(m_inBuff + m_inBuffwindex, bcw);
if(res<0){;} // nothing to do
if(res>0){
m_inBuffwindex+=res;
}
if(m_inBuffwindex==m_inBuffsize){
if(m_f_stream==false){
m_f_stream=true;
if(audio_info) audio_info("stream ready");
}
m_inbuffrindex=sendBytes(m_inBuff, m_inBuffsize);
memmove(m_inBuff, m_inBuff + m_inbuffrindex , m_inBuffsize-m_inbuffrindex);
//log_i("%i bytes moved", m_inBuffsize-m_rbrindex);
m_inBuffwindex-=m_inbuffrindex;
}
if(res==0){// eof
memmove(m_inBuff, m_inBuff + m_inbuffrindex , m_inBuffsize-m_inbuffrindex);
mp3file.close();
m_f_stream=false;
m_f_localfile=false;
sprintf(chbuf,"End of mp3file %s", m_mp3title.c_str());
if(audio_info) audio_info(chbuf);
if(audio_eof_mp3) audio_eof_mp3(m_mp3title.c_str());
}
}
// - webstream - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
if(m_f_webstream){ // Playing file from URL?
static uint16_t inBuffSize=m_inBuffsize;
static int bytesdecoded=0;
if(m_f_ssl==false) m_av=client.available(); // Available from stream
if(m_f_ssl==true) m_av=clientsecure.available(); // Available from stream
if((m_f_firststream_ready==false)&&(m_av>0)){ // first streamdata recognised
m_f_firststream_ready=true;
m_f_stream=false;
inBuffSize=m_inBuffsize;
}
if(((m_datamode==AUDIO_DATA)||(m_datamode==AUDIO_SWM))&&((m_count>0))){
bcw=inBuffSize-m_inBuffwindex;
uint x;
if(m_count>=bcw) x=bcw; else x=m_count;
if((m_f_chunked)&&(x>m_chunkcount)) x=m_chunkcount;
if(m_f_ssl==false) res=client.read(m_inBuff + m_inBuffwindex, x);
if(m_f_ssl==true) res=clientsecure.read(m_inBuff + m_inBuffwindex, x);
if(res<0){;} // nothing to do
if(res>0){
m_count-=res;
if(m_f_chunked) m_chunkcount-=res;
m_inBuffwindex+=res;
}
if(m_inBuffwindex==inBuffSize){
if(m_f_stream==false){
m_f_stream=true;
if(audio_info) audio_info("stream ready");
}
bytesdecoded=sendBytes(m_inBuff, inBuffSize);
if(bytesdecoded<0){ // no syncword found or decode error, try next chunk
m_inbuffrindex=200; // try next chunk
memmove(m_inBuff, m_inBuff + m_inbuffrindex , inBuffSize-m_inbuffrindex);
m_inBuffwindex-=m_inbuffrindex;
inBuffSize=m_inBuffsize;
return;
}
else{
m_inbuffrindex=bytesdecoded;
memmove(m_inBuff, m_inBuff + m_inbuffrindex , inBuffSize-m_inbuffrindex);
m_inBuffwindex-=m_inbuffrindex;
// log_i("bytesdecoded %i moved %i", bytesdecoded,inBuffSize-m_inbuffrindex );
// if(m_inBuffwindex>m_inbuffrindex) inBuffSize=m_inBuffwindex+1;
// else inBuffSize=m_inbuffrindex+1;
}
}
if(res==0){
if(m_f_stream==true){
m_f_stream=false;
i2s_zero_dma_buffer((i2s_port_t)m_i2s_num);
if(audio_info) audio_info("stream lost");
}
}
if(m_count==0){
if(m_datamode==AUDIO_SWM){
m_count=16000; //mms has no metadata
}
else{
m_datamode=AUDIO_METADATA;
m_f_firstmetabyte=true;
}
}
}
else { //!=DATA
if (m_datamode == AUDIO_PLAYLISTDATA) {
if (m_t0 + 49 < millis()) {
handlebyte('\n'); // send LF
}
}
int16_t x=0;;
if(m_f_chunked&&(m_datamode!=AUDIO_HEADER)){
if(m_chunkcount>0){
if(m_f_ssl==false) x = (client.read());
if(m_f_ssl==true) x = (clientsecure.read());
if (x >= 0){
handlebyte(x);
m_chunkcount--;
}
}
}
else{
if(m_f_ssl==false) x = (client.read());
if(m_f_ssl==true) x = (clientsecure.read());
if (x >= 0){
handlebyte(x);
}
}
if (m_datamode == AUDIO_DATA) {
m_count = m_metaint;
if (m_metaint == 0)
m_datamode = AUDIO_SWM; // stream without metadata, can be mms
}
if (m_datamode == AUDIO_SWM) {
m_count =16000;
}
}
if(m_f_firststream_ready==true){
if(m_av==0){ // empty buffer, broken stream or bad bitrate?
i++;
if(i>200000){ // wait several seconds
i=0;
if(audio_info) audio_info("Stream lost -> try new connection");
connecttohost(m_lastHost); // try a new connection
}
}
else i=0;
}
if(m_f_chunked==false){return;}
else{
if(m_datamode==AUDIO_HEADER) return;
if((m_chunkcount) == 0){ // Expecting a new chunkcount?
int b = (client.read());
if(b<1) return;
if(b=='\r'){}
else if(b=='\n'){
m_chunkcount=chunksize;
chunksize=0;
}
else{
// We have received a hexadecimal character. Decode it and add to the result.
b=toupper(b) - '0'; // Be sure we have uppercase
if(b > 9) b = b - 7; // Translate A..F to 10..15
chunksize=(chunksize << 4) + b;
}
}
}
}
}
//---------------------------------------------------------------------------------------------------------------------
void Audio::handlebyte(uint8_t b){
static uint16_t playlistcnt; // Counter to find right entry in playlist
String lcml; // Lower case metaline
static String ct; // Contents type
static String host;
int inx; // Pointer in metaline
static boolean f_entry=false; // entryflag for asx playlist
if(m_datamode == AUDIO_HEADER){ // Handle next byte of MP3 header
if((b>0x7F)||(b=='\r')||(b =='\0')){ // Ignore unprintable characters, ignore CR, ignore NULL
; // Yes, ignore
}
else if(b == '\n'){ // Linefeed ?
m_LFcount++; // Count linefeeds
if(chkhdrline(m_metaline.c_str())){ // Reasonable input?
lcml=m_metaline; // Use lower case for compare
lcml.toLowerCase();
lcml.trim();
if(lcml.indexOf("content-type:") >= 0){ // Line with "Content-Type: xxxx/yyy"
if(lcml.indexOf("audio") >= 0){ // Is ct audio?
m_ctseen=true; // Yes, remember seeing this
ct=m_metaline.substring(13); // Set contentstype. Not used yet
ct.trim();
sprintf(chbuf, "%s seen.", ct.c_str());
if(audio_info) audio_info(chbuf);
if(ct.indexOf("mpeg")>=0){
m_f_mp3=true;
if(audio_info) audio_info("format is mp3"); //ok is likely mp3
}
else if(ct.indexOf("aac")>=0){
m_f_aac=true;
if(audio_info) audio_info("format is aac");
stopSong();
}
else if(ct.indexOf("mp4")>=0){
m_f_aac=true;
if(audio_info) audio_info("format is aac");
stopSong();
}
else if(ct.indexOf("ogg")>=0){
m_f_running=false;
if(audio_info) audio_info("can't play ogg");
stopSong();
}
else{
m_f_running=false;
if(audio_info) audio_info("unknown audio format");
}
}
if(lcml.indexOf("ogg") >= 0){ // Is ct ogg?
m_f_running=false;
m_ctseen=true; // Yes, remember seeing this
ct=m_metaline.substring(13);
ct.trim();
sprintf(chbuf, "%s seen.", ct.c_str());
if(audio_info) audio_info(chbuf);
if(audio_info) audio_info("no ogg decoder implemented");
stopSong();
// m_metaint=0; // has no metadata
// m_bitrate=0;
// m_icyname=="";
// m_f_swm=true;
}
}
else if(lcml.startsWith("location:")){
host=m_metaline.substring(lcml.indexOf("http"),lcml.length());// use metaline instead lcml
if(host.indexOf("&")>0)host=host.substring(0,host.indexOf("&")); // remove parameter
sprintf(chbuf, "redirect to new host %s", host.c_str());
if(audio_info) audio_info(chbuf);
connecttohost(host);
}
else if(lcml.startsWith("icy-br:")){
m_bitrate=m_metaline.substring(7).toInt(); // Found bitrate tag, read the bitrate
sprintf(chbuf,"%d", m_bitrate);
if(audio_bitrate) audio_bitrate(chbuf);
}
else if(lcml.startsWith("icy-metaint:")){
m_metaint=m_metaline.substring(12).toInt(); // Found metaint tag, read the value
if(m_metaint>0) m_f_swm=false; // Multimediastream
}
else if(lcml.startsWith("icy-name:")){
m_icyname=m_metaline.substring(9); // Get station name
m_icyname.trim(); // Remove leading and trailing spaces
if(m_icyname!=""){
if(audio_showstation) audio_showstation(m_icyname.c_str());
}
}
else if(lcml.startsWith("transfer-encoding:")){ // Station provides chunked transfer
if(m_metaline.endsWith("chunked")){
m_f_chunked=true;
if(audio_info) audio_info("chunked data transfer");
m_chunkcount=0; // Expect chunkcount in DATA
}
}
else if(lcml.startsWith("icy-url:")){
m_icyurl=m_metaline.substring(8); // Get the URL
m_icyurl.trim();
if(audio_icyurl) audio_icyurl(m_icyurl.c_str());
}
else{ // all other
sprintf(chbuf, "%s", m_metaline.c_str());
if(audio_info) audio_info(chbuf);
}
}
m_metaline=""; // Reset this line
if((m_LFcount == 2) && m_ctseen){ // Some data seen and a double LF?
if(m_icyname==""){if(audio_showstation) audio_showstation("");} // no icyname available
if(m_bitrate==0){if(audio_bitrate) audio_bitrate("");} // no bitrate received
if(m_f_swm==true){ // stream without metadata
m_datamode=AUDIO_SWM; // Overwrite m_datamode
sprintf(chbuf, "Switch to SWM, bitrate is %d, metaint is %d", m_bitrate, m_metaint); // Show bitrate and metaint
if(audio_info) audio_info(chbuf);
String lasthost=m_lastHost;
uint idx=lasthost.indexOf('?');
if(idx>0) lasthost=lasthost.substring(0, idx);
if(audio_lasthost) audio_lasthost(lasthost.c_str());
m_f_swm=false;
}
else{
m_datamode=AUDIO_DATA; // Expecting data now
sprintf(chbuf, "Switch to DATA, bitrate is %d, metaint is %d", m_bitrate, m_metaint); // Show bitrate and metaint
if(audio_info) audio_info(chbuf);
String lasthost=m_lastHost;
uint idx=lasthost.indexOf('?');
if(idx>0) lasthost=lasthost.substring(0, idx);
if(audio_lasthost) audio_lasthost(lasthost.c_str());
}
delay(1000);
}
}
else{
m_metaline+=(char)b; // Normal character, put new char in metaline
m_LFcount=0; // Reset double CRLF detection
}
return;
} // end AUDIO_HEADER
if(m_datamode == AUDIO_METADATA){ // Handle next byte of metadata
if(m_f_firstmetabyte){ // First byte of metadata?
m_f_firstmetabyte=false; // Not the first anymore
m_metacount=b*16+1; // New count for metadata including length byte
if(m_metacount > 1){
sprintf(chbuf, "Metacount=%d bytes", // Most of the time there are zero bytes of metadata
m_metacount-1);
if(audio_info) audio_info(chbuf);
}
m_metaline=""; // Set to empty
}
else{
m_metaline+=(char)b; // Normal character, put new char in metaline
}
if(--m_metacount == 0){
if(m_metaline.length() > 1500){ // Unlikely metaline length?
if(audio_info) audio_info("Metadata block to long! Skipping all Metadata from now on.");
m_metaint=16000; // Probably no metadata
m_metaline=""; // Do not waste memory on this
m_datamode=AUDIO_SWM; // expect stream without metadata
}
else{
m_datamode=AUDIO_DATA; // Expecting data
}
if(m_metaline.length()){ // Any info present?
// metaline contains artist and song name. For example:
// "StreamTitle='Don McLean - American Pie';StreamUrl='';"
// Sometimes it is just other info like:
// "StreamTitle='60s 03 05 Magic60s';StreamUrl='';"
// Isolate the StreamTitle, remove leading and trailing quotes if present.
//log_i("ST %s", m_metaline.c_str());
if( !m_f_localfile) showstreamtitle(m_metaline.c_str(), true); // Show artist and title if present in metadata
}
}
}
if(m_datamode == AUDIO_PLAYLISTINIT) // Initialize for receive .m3u file
{
// We are going to use metadata to read the lines from the .m3u file
// Sometimes this will only contain a single line
f_entry=false; // no entry found yet (asx playlist)
m_metaline=""; // Prepare for new line
m_LFcount=0; // For detection end of header
m_datamode=AUDIO_PLAYLISTHEADER; // Handle playlist data
playlistcnt=1; // Reset for compare
m_totalcount=0; // Reset totalcount
if(audio_info) audio_info("Read from playlist");
}
if(m_datamode == AUDIO_PLAYLISTHEADER){ // Read header
if((b>0x7F)||(b=='\r')||(b == '\0')){ // Ignore unprintable characters, ignore CR, ignore NULL // Ignore CR
; // Yes, ignore
}
else if(b == '\n'){ // Linefeed ?
m_LFcount++; // Count linefeeds
sprintf(chbuf, "Playlistheader: %s", m_metaline.c_str()); // Show playlistheader
if(audio_info) audio_info(chbuf);
lcml=m_metaline; // Use lower case for compare
lcml.toLowerCase();
lcml.trim();
if(lcml.startsWith("location:")){
host=m_metaline.substring(lcml.indexOf("http"),lcml.length());// use metaline instead lcml
if(host.indexOf("&")>0)host=host.substring(0,host.indexOf("&")); // remove parameter
sprintf(chbuf, "redirect to new host %s", host.c_str());
if(audio_info) audio_info(chbuf);
connecttohost(host);
}
m_metaline=""; // Ready for next line
if(m_LFcount == 2)
{
if(audio_info) audio_info("Switch to PLAYLISTDATA");
m_datamode=AUDIO_PLAYLISTDATA; // Expecting data now
m_t0=millis();
return;
}
}
else{
m_metaline+=(char)b; // Normal character, put new char in metaline
m_LFcount=0; // Reset double CRLF detection
}
}
if(m_datamode == AUDIO_PLAYLISTDATA){ // Read next byte of .m3u file data
m_t0=millis();
if((b > 0x7F) || // Ignore unprintable characters
(b == '\r') || // Ignore CR
(b == '\0')) // Ignore NULL
{ /* Yes, ignore */ }
else if(b == '\n'){ // Linefeed or end of string?
sprintf(chbuf, "Playlistdata: %s", m_metaline.c_str()); // Show playlistdata
if(audio_info) audio_info(chbuf);
if(m_playlist.endsWith("m3u")){
if(m_metaline.length() < 5) { // Skip short lines
m_metaline=""; // Flush line
return;}
if(m_metaline.indexOf("#EXTINF:") >= 0){ // Info?
if(m_playlist_num == playlistcnt){ // Info for this entry?
inx=m_metaline.indexOf(","); // Comma in this line?
if(inx > 0){
// Show artist and title if present in metadata
//if(vs1053_showstation) vs1053_showstation(m_metaline.substring(inx + 1).c_str());
if(audio_info) audio_info(m_metaline.substring(inx + 1).c_str());
}
}
}
if(m_metaline.startsWith("#")){ // Commentline?
m_metaline="";
return;} // Ignore commentlines
// Now we have an URL for a .mp3 file or stream. Is it the rigth one?
//if(metaline.indexOf("&")>0)metaline=host.substring(0,metaline.indexOf("&"));
sprintf(chbuf, "Entry %d in playlist found: %s", playlistcnt, m_metaline.c_str());
if(audio_info) audio_info(chbuf);
if(m_metaline.indexOf("&")){
m_metaline=m_metaline.substring(0, m_metaline.indexOf("&"));}
if(m_playlist_num == playlistcnt){
inx=m_metaline.indexOf("http://"); // Search for "http://"
if(inx >= 0){ // Does URL contain "http://"?
host=m_metaline.substring(inx + 7);} // Yes, remove it and set host
else{
host=m_metaline;} // Yes, set new host
//log_i("connecttohost %s", host.c_str());
connecttohost(host); // Connect to it
}
m_metaline="";
host=m_playlist; // Back to the .m3u host
playlistcnt++; // Next entry in playlist
} //m3u
if(m_playlist.endsWith("pls")){
if(m_metaline.startsWith("File1")){
inx=m_metaline.indexOf("http://"); // Search for "http://"
if(inx >= 0){ // Does URL contain "http://"?
m_plsURL=m_metaline.substring(inx + 7); // Yes, remove it
if(m_plsURL.indexOf("&")>0)m_plsURL=m_plsURL.substring(0,m_plsURL.indexOf("&")); // remove parameter
// Now we have an URL for a .mp3 file or stream in host.
m_f_plsFile=true;
}
}
if(m_metaline.startsWith("Title1")){
m_plsStationName=m_metaline.substring(7);
if(audio_showstation) audio_showstation(m_plsStationName.c_str());
sprintf(chbuf, "StationName: %s", m_plsStationName.c_str());
if(audio_info) audio_info(chbuf);
m_f_plsTitle=true;
}
if(m_metaline.startsWith("Length1")) m_f_plsTitle=true; // if no Title is available
if((m_f_plsFile==true)&&(m_metaline.length()==0)) m_f_plsTitle=true;
m_metaline="";
if(m_f_plsFile && m_f_plsTitle){ //we have both StationName and StationURL
m_f_plsFile=false; m_f_plsTitle=false;
//log_i("connecttohost %s", m_plsURL.c_str());
connecttohost(m_plsURL); // Connect to it
}
}//pls
if(m_playlist.endsWith("asx")){
String ml=m_metaline;
ml.toLowerCase(); // use lowercases
if(ml.indexOf("<entry>")>=0) f_entry=true; // found entry tag (returns -1 if not found)
if(f_entry){
if(ml.indexOf("ref href")>0){
inx=ml.indexOf("http://");
if(inx>0){
m_plsURL=m_metaline.substring(inx + 7); // Yes, remove it
if(m_plsURL.indexOf('"')>0)m_plsURL=m_plsURL.substring(0,m_plsURL.indexOf('"')); // remove rest
// Now we have an URL for a stream in host.
m_f_plsFile=true;
}
}
if(ml.indexOf("<title>")>=0){
m_plsStationName=m_metaline.substring(7);
if(m_plsURL.indexOf('<')>0)m_plsURL=m_plsURL.substring(0,m_plsURL.indexOf('<')); // remove rest
if(audio_showstation) audio_showstation(m_plsStationName.c_str());
sprintf(chbuf, "StationName: %s", m_plsStationName.c_str());
if(audio_info) audio_info(chbuf);
m_f_plsTitle=true;
}
}//entry
m_metaline="";
if(m_f_plsFile && m_f_plsTitle){ //we have both StationName and StationURL
m_f_plsFile=false; m_f_plsTitle=false;
//log_i("connecttohost %s", host.c_str());
connecttohost(m_plsURL); // Connect to it
}
}//asx
}
else{
m_metaline+=(char)b; // Normal character, add it to metaline
}
return;
}
}
//---------------------------------------------------------------------------------------------------------------------
void Audio::showstreamtitle(const char *ml, bool full){
// example for ml:
// StreamTitle='Oliver Frank - Mega Hitmix';StreamUrl='www.radio-welle-woerthersee.at';
// or adw_ad='true';durationMilliseconds='10135';adId='34254';insertionType='preroll';
int16_t pos1=0, pos2=0, pos3=0, pos4=0;
String mline=ml, st="", su="", ad="", artist="", title="", icyurl="";
//log_i("%s",mline.c_str());
pos1=mline.indexOf("StreamTitle=");
if(pos1!=-1){ // StreamTitle found
pos1=pos1+12;
st=mline.substring(pos1); // remove "StreamTitle="
// log_i("st_orig %s", st.c_str());
if(st.startsWith("'{")){
// special codig like '{"t":"\u041f\u0438\u043a\u043d\u0438\u043a - \u0418...."m":"mdb","lAU":0,"lAuU":18}
pos2= st.indexOf('"', 8); // end of '{"t":".......", seek for double quote at pos 8
st=st.substring(0, pos2);
pos2= st.lastIndexOf('"');
st=st.substring(pos2+1); // remove '{"t":"
pos2=0;
String uni="";
String st1="";
uint16_t u=0;
uint8_t v=0, w=0;
for(int i=0; i<st.length(); i++){
if(pos2>1) pos2++;
if((st[i]=='\\')&&(pos2==0)) pos2=1; // backslash found
if((st[i]=='u' )&&(pos2==1)) pos2=2; // "\u" found
if(pos2>2) uni=uni+st[i]; // next 4 values are unicode
if(pos2==0) st1+=st[i]; // normal character
if(pos2>5){
pos2=0;
u=strtol(uni.c_str(), 0, 16); // convert hex to int
v=u/64 + 0xC0; st1+=char(v); // compute UTF-8
w=u%64 + 0x80; st1+=char(w);
//log_i("uni %i %i", v, w );
uni="";
}
}
log_i("st1 %s", st1.c_str());
st=st1;
}
else{
// normal coding
if(st.indexOf('&')!=-1){ // maybe html coded
st.replace("&Auml;", "Ä" ); st.replace("&auml;", "ä"); //HTML -> ASCII
st.replace("&Ouml;", "Ö" ); st.replace("&ouml;", "o");
st.replace("&Uuml;", "Ü" ); st.replace("&uuml;", "ü");
st.replace("&szlig;","ß" ); st.replace("&amp;", "&");
st.replace("&quot;", "\""); st.replace("&lt;", "<");
st.replace("&gt;", ">" ); st.replace("&apos;", "'");
}
pos2= st.indexOf(';',1); // end of StreamTitle, first occurence of ';'
if(pos2!=-1) st=st.substring(0,pos2); // extract StreamTitle
if(st.startsWith("'")) st=st.substring(1,st.length()-1); // if exists remove ' at the begin and end
pos3=st.lastIndexOf(" - "); // separator artist - title
if(pos3!=-1){ // found separator? yes
artist=st.substring(0,pos3); // artist not used yet
title=st.substring(pos3+3); // title not used yet
}
}
if(m_st_remember!=st){ // show only changes
if(audio_showstreamtitle) audio_showstreamtitle(st.c_str());
}
m_st_remember=st;
st="StreamTitle=" + st;
if(audio_info) audio_info(st.c_str());
}
pos4=mline.indexOf("StreamUrl=");
if(pos4!=-1){ // StreamUrl found
pos4=pos4+10;
su=mline.substring(pos4); // remove "StreamUrl="
pos2= su.indexOf(';',1); // end of StreamUrl, first occurence of ';'
if(pos2!=-1) su=su.substring(0,pos2); // extract StreamUrl
if(su.startsWith("'")) su=su.substring(1,su.length()-1); // if exists remove ' at the begin and end
su="StreamUrl=" + su;
if(audio_info) audio_info(su.c_str());
}
pos2=mline.indexOf("adw_ad="); // advertising,
if(pos2!=-1){
ad=mline.substring(pos2);
if(audio_info) audio_info(ad.c_str());
pos2=mline.indexOf("durationMilliseconds=");
if(pos2!=-1){
pos2+=22;
mline=mline.substring(pos2);
mline=mline.substring(0, mline.indexOf("'")-3); // extract duration in sec
if(audio_commercial) audio_commercial(mline.c_str());
}
}
if(!full){
m_icystreamtitle=""; // Unknown type
return; // Do not show
}
if(pos1==-1 && pos4==-1){
// Info probably from playlist
st=mline;
if(audio_showstreamtitle) audio_showstreamtitle(st.c_str());
st="Streamtitle: " + st;
if(audio_info) audio_info(chbuf);
}
}
//---------------------------------------------------------------------------------------------------------------------
bool Audio::chkhdrline(const char* str){
char b; // Byte examined
int len=0; // Lengte van de string
while((b= *str++)){ // Search to end of string
len++; // Update string length
if( !isalpha(b)){ // Alpha (a-z, A-Z)
if(b != '-'){ // Minus sign is allowed
if((b == ':') || (b == ';')){ // Found a colon or semicolon?
return ((len > 5) && (len < 200)); // Yes, okay if length is okay
}
else{
return false; // Not a legal character
}
}
}
}
return false; // End of string without colon
}
//---------------------------------------------------------------------------------------------------------------------
int Audio::sendBytes(uint8_t *data, size_t len) {
if(m_validSamples>0) {playChunk(); return 0;} //outputbuffer full or not ready, try again?
static int lastret=0, count=0;
if(!m_f_playing){
// mad_stream_buffer(stream, data, len);
if(m_f_mp3) m_nextSync = mp3decoder.MP3FindSyncWord(data, len);
if(m_nextSync==-1) {
if(audio_info) audio_info("syncword not found");
return -1;
}
if(m_nextSync > 0){
sprintf(chbuf, "syncword found at pos %i", m_nextSync);
if(audio_info) audio_info(chbuf);
return m_nextSync;
}
if(audio_info) audio_info("syncword found at pos 0");
count=0;
m_lastRate=0;
m_lastChannels=0;
m_bps=0;
m_bitrate=0;
m_f_playing=true;
}
m_bytesLeft=len;
int ret=0;
if(m_f_mp3) ret = mp3decoder.MP3Decode(data, &m_bytesLeft, m_outBuff, 0);
if(ret==0) lastret=0;
int bytesDecoded=len-m_bytesLeft;
if(bytesDecoded==0){ // unlikely framesize
if(audio_info) audio_info("mp3 framesize is 0, start decoding again");
m_f_playing=false; // seek for new syncword
return -1; // send error
}
if(ret){ // Error, skip the frame...
m_f_playing=false; // seek for new syncword
if(count==0){
i2s_zero_dma_buffer((i2s_port_t)m_i2s_num);
if(m_f_mp3){
sprintf(chbuf, "MP3 decode error %d", ret);
if(audio_info) audio_info(chbuf);
}
}
if(lastret==ret) count++;
if(count>10){ count=0; lastret=0; } // more than 100 errors
if(ret!=lastret){
lastret=ret; count=0;
}
return bytesDecoded;
}
else{
if(m_f_mp3){
if ((int) mp3decoder.MP3GetSampRate() != (int) m_lastRate) {
m_lastRate = mp3decoder.MP3GetSampRate();
setSampleRate(mp3decoder.MP3GetSampRate());
sprintf(chbuf,"SampleRate=%i",mp3decoder.MP3GetSampRate());
if(audio_info) audio_info(chbuf);
}
if((int) mp3decoder.MP3GetSampRate() ==0){ // error can't be
if(audio_info) audio_info("SampleRate=0, try new frame");
m_f_playing=false;
return 1;
}
if (mp3decoder.MP3GetChannels() != m_lastChannels) {
setChannels(mp3decoder.MP3GetChannels());
m_lastChannels = mp3decoder.MP3GetChannels();
sprintf(chbuf,"Channels=%i", mp3decoder.MP3GetChannels());
if(audio_info) audio_info(chbuf);
}
if (mp3decoder.MP3GetBitsPerSample() != (int)m_bps){
m_bps=mp3decoder.MP3GetBitsPerSample();
sprintf(chbuf,"BitsPerSample=%i", mp3decoder.MP3GetBitsPerSample());
if(audio_info) audio_info(chbuf);
}
if (mp3decoder.MP3GetBitrate() != m_bitrate){
if(m_bitrate==0){
sprintf(chbuf,"Bitrate=%i", mp3decoder.MP3GetBitrate()); // show only the first rate
if(audio_info) audio_info(chbuf);
}
m_bitrate=mp3decoder.MP3GetBitrate();
}
m_curSample = 0;
m_validSamples = mp3decoder.MP3GetOutputSamps() / m_lastChannels;
}
}
playChunk();
return bytesDecoded;
}
//---------------------------------------------------------------------------------------------------------------------
bool Audio::setPinout(uint8_t BCLK, uint8_t LRC, uint8_t DOUT){
m_BCLK=BCLK; // Bit Clock
m_LRC=LRC; // Left/Right Clock
m_DOUT=DOUT; // Data Out
i2s_pin_config_t pins = {
.bck_io_num = m_BCLK,
.ws_io_num = m_LRC, // wclk,
.data_out_num = m_DOUT,
.data_in_num = I2S_PIN_NO_CHANGE
};
i2s_set_pin((i2s_port_t)m_i2s_num, &pins);
return true;
}
//---------------------------------------------------------------------------------------------------------------------
uint32_t Audio::getFileSize(){
if (!mp3file) return 0;
return mp3file.size();
}
//---------------------------------------------------------------------------------------------------------------------
uint32_t Audio::getFilePos(){
if (!mp3file) return 0;
return mp3file.position();
}
//---------------------------------------------------------------------------------------------------------------------
bool Audio::setFilePos(uint32_t pos){
if (!mp3file) return false;
return mp3file.seek(pos);
}
//---------------------------------------------------------------------------------------------------------------------
bool Audio::setSampleRate(int freq) {
i2s_set_sample_rates((i2s_port_t)m_i2s_num, freq);
return true;
}
//---------------------------------------------------------------------------------------------------------------------
bool Audio::setBitsPerSample(int bits) {
//return sink->SetBitsPerSample(bits);
if ( (bits != 16) && (bits != 8) ) return false;
m_bps = bits;
return true;
}
//---------------------------------------------------------------------------------------------------------------------
bool Audio::setChannels(int ch) {
if ( (ch < 1) || (ch > 2) ) return false;
m_channels = ch;
return true;
}
//---------------------------------------------------------------------------------------------------------------------
bool Audio::playSample(int16_t sample[2]) {
if (m_bps == 8) {
// Upsample from unsigned 8 bits to signed 16 bits
sample[LEFTCHANNEL] = (((int16_t)(sample[LEFTCHANNEL]&0xff)) - 128) << 8;
sample[RIGHTCHANNEL] = (((int16_t)(sample[RIGHTCHANNEL]&0xff)) - 128) << 8;
}
uint32_t s32;
s32 = ((Gain(sample[RIGHTCHANNEL]))<<16) | (Gain(sample[LEFTCHANNEL]) & 0xffff); // volume
esp_err_t err=i2s_write((i2s_port_t)m_i2s_num, (const char*)&s32, sizeof(uint32_t), &m_bytesWritten, 1000);
if(err!=ESP_OK){
log_e("ESP32 Errorcode %i", err);
return false; // Can't stuff any more in I2S...
}
return true;
}
//---------------------------------------------------------------------------------------------------------------------
void Audio::setVolume(uint8_t vol){ // vol 22 steps, 0...21
if(vol>21) vol=21;
m_vol=volumetable[vol];
}
//---------------------------------------------------------------------------------------------------------------------
uint8_t Audio::getVolume(){
return m_vol;
}
//---------------------------------------------------------------------------------------------------------------------
int16_t Audio::Gain(int16_t s) {
int32_t v;
v= (s * m_vol)>>6;
return (int16_t)(v&0xffff);
}
//---------------------------------------------------------------------------------------------------------------------
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