IEnumerator DownloadCoroutine()
{
string url = "https://api.apigw.smt.docomo.ne.jp/aiTalk/v1/textToSpeech?APIKEY=" + docomoApiKey;
Dictionary <string, string> aiTalksParams = new Dictionary <string, string>();
aiTalksParams["pitch"] = "1";
aiTalksParams["range"] = "1";
aiTalksParams["rate"] = "1";
aiTalksParams["volume"] = "1.5";
var ssml = CreateSSML(aiTalksParams);
byte[] postData = System.Text.Encoding.UTF8.GetBytes(ssml);
Dictionary <string, string> headers = new Dictionary <string, string>();
headers["Content-Type"] = "application/ssml+xml";
headers["Accept"] = "audio/L16";
WWW www = new WWW(url, postData, headers);
yield return(www);
if (!string.IsNullOrEmpty(www.error))
{
Debug.LogError(www.error);
yield break;
}
uint fs = 16000; // 16K
WAVHDR wavHdr = new WAVHDR()
{
formatid = 0x0001, //PCM 非圧縮
channel = 1, // ch=1 モノラル
fs = fs, //
bytespersec = fs * 2, // 16bit 16K
blocksize = 2, // ブロックサイズ (Byte/sample×チャンネル数)->→16ビットモノラルなので 2
bitspersample = 16, // サンプルあたりのビット数 (bit/sample)
size = 10 * fs * 2, // 波形データのバイト数
};
wavHdr.fileSize = wavHdr.size + (uint)Marshal.SizeOf(wavHdr); // 全体のバイト数
Debug.Log("SaveWaveFile");
SaveWaveFile(wavHdr, ConvertBytesEndian(www.bytes));
}
private void SaveWaveFile(WAVHDR hdr, byte[] databuf)
{
using (FileStream fs = new FileStream(SaveSoundFileName, FileMode.Create, FileAccess.Write))
using (BinaryWriter bWriter = new BinaryWriter(fs))
{
// ヘッダ書きだし
foreach (byte b in hdr.getByteArray())
{
bWriter.Write(b);
}
// 波形書きだし
foreach (var data in databuf)
{
bWriter.Write(data);
}
bWriter.Flush();
}
}