File content as of revision 7:e5500683781b:

#include "tts.h"


void playTTS(VS1053 *player, TCPSocket *socket, char* buf) {
    int content_length;
    char text[200] = "";
    char c; 
    socket->connect("api.voicerss.org", 80);
    url_encode(text, buf);
    sprintf(buf, "GET /?key=fb82492d22b541ce8983bbea7d0d984b&hl=en-us&src=%s&c=mp3&f=8khz_8bit_mono&r=1 HTTP/1.1\nHost: api.voicerss.org\n\n", text);
    socket->send(buf, MAX_BUF_SIZE);
    extractVoiceData(socket, content_length);
    printf("play start! : %d\n", content_length);
    player->sendDataBlock(socket, content_length);
}

void playTTS(TCPSocket *socket, char* buf) {
    int content_length;
    char text[200] = "";
    char c; 
    socket->connect("api.voicerss.org", 80);
    url_encode(text, buf);
    sprintf(buf, "GET /?key=fb82492d22b541ce8983bbea7d0d984b&hl=en-us&src=%s&c=mp3&f=8khz_8bit_mono&r=1 HTTP/1.1\nHost: api.voicerss.org\n\n", text);
    socket->send(buf, MAX_BUF_SIZE);
    extractVoiceData(socket, content_length);
    printf("play start! : %d\n", content_length);
    int sizeSent = 0;
    while (sizeSent < content_length) {
        if (socket->recv(&c, sizeof(c)) >= 0) {
            //printf("%d: %c\n", sizeSent, c);
            sizeSent++;
        }
    }
    printf("\nplay size: %d\n", sizeSent);
}

void url_encode(char *dst, const char* src ) {
    int i, j = 0, len;
    char* tmp;
    
    len = strlen( src );
    tmp = (char*) malloc( (sizeof(char) * 3 * len) +1 );

    for( i = 0 ; i < len ; i++ ){
        if( IS_ALNUM( src[i] ) ) {
          tmp[j] = src[i];
        }
        else{
          snprintf( &tmp[j], 4, "%%%02X\n", (unsigned char)src[i] );
          j += 2;
        }
        j++;
    }
    
    tmp[j] = 0;
    strcpy(dst, tmp);
}

uint16_t strToUint16(char* str, int size)
{
  uint16_t result = 0;
  for (int i = 0; i < size; i++) {
    if (str[i] > '9' || str[i] < '0') {
      break;
    }

    result *= 10;
    result += str[i] - '0';
  }

  return result;
}

bool extractVoiceData(TCPSocket *socket, int &content_length) {
    bool isGetLength = false;
    char c;
    content_length = 0;
    char buf[MAX_NUMBER_SIZE] = "";
    while (socket->recv(&c, sizeof(c)) >= 0) {
        if (isGetLength == false && c == '\n') {
            for (int i = 0; i < MAX_HEADER_SIZE; i++) {
                if (socket->recv(&c, sizeof(c)) >= 0 && c == 'C' && socket->recv(&c, sizeof(c)) >= 0 && c == 'o' && socket->recv(&c, sizeof(c)) >= 0 && c == 'n' && 
                    socket->recv(&c, sizeof(c)) >= 0 && c == 't' && socket->recv(&c, sizeof(c)) >= 0 && c == 'e' && socket->recv(&c, sizeof(c)) >= 0 && c == 'n' && 
                    socket->recv(&c, sizeof(c)) >= 0 && c == 't' && socket->recv(&c, sizeof(c)) >= 0 && c == '-' && socket->recv(&c, sizeof(c)) >= 0 && c == 'L' &&
                    socket->recv(&c, sizeof(c)) >= 0 && c == 'e' && socket->recv(&c, sizeof(c)) >= 0 && c == 'n' && socket->recv(&c, sizeof(c)) >= 0 && c == 'g' && 
                    socket->recv(&c, sizeof(c)) >= 0 && c == 't' && socket->recv(&c, sizeof(c)) >= 0 && c == 'h' && socket->recv(&c, sizeof(c)) >= 0 && c == ':' &&
                    socket->recv(&c, sizeof(c)) >= 0 && c == ' ') {   
                    for(int j = 0; j < MAX_NUMBER_SIZE; j++) {
                        if (socket->recv(&c, sizeof(c)) >= 0 && c == '\n') {
                            buf[j] = 0;
                            content_length = strToUint16(buf, sizeof(buf));
                            isGetLength = true;
                            break;
                        }
                        buf[j] = c;
                    }
                }
                else {
                    break;
                }
            }
        }
        
        if (isGetLength == true && c == '\n') {
            for (int i = 0; i < 3; i++) {
                if (socket->recv(&c, sizeof(c)) >= 0 && c == '\n') {
                    printf("content_length: %d\n", content_length);
                    return true;
                }
            }
        }
    }
    
    return false;
}

void strcpy(unsigned char *dst, unsigned char *src)
{
    int idx = 0;
    for (idx = 0; src[idx] != '\0'; idx++) {
        dst[idx] = src[idx];
    }
    dst[idx] = src[idx];
}