nguyen nam / SD_PlayerSkeleton

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Dependencies:   SDFileSystem_Warning_Fixed

SD_WavReader.hpp@11:c33c711a5712, 2017-03-15 (annotated)

Committer:
MikamiUitOpen
Date:
Wed Mar 15 23:45:48 2017 +0000
Revision:
11:c33c711a5712
Parent:
2:511479736d6e
Child:
16:299cc1052baa
12

Who changed what in which revision?

UserRevisionLine numberNew contents of line
MikamiUitOpen 0:d310bb78455d 1 //--------------------------------------------------------------
MikamiUitOpen 0:d310bb78455d 2 // SD_WavReader class ---- Header
MikamiUitOpen 0:d310bb78455d 3 // SD カードの *.wav ファイルの内容を読み出す
MikamiUitOpen 11:c33c711a5712 4 // 以下の型式のファイルのみ扱う
MikamiUitOpen 0:d310bb78455d 5 // PCM，16 ビットステレオ，標本化周波数 44.1 kHz
MikamiUitOpen 0:d310bb78455d 6 //
MikamiUitOpen 11:c33c711a5712 7 // 2017/03/09, Copyright (c) 2017 MIKAMI, Naoki
MikamiUitOpen 0:d310bb78455d 8 //--------------------------------------------------------------
MikamiUitOpen 0:d310bb78455d 9
MikamiUitOpen 0:d310bb78455d 10 #ifndef SD_WAV_READER_HPP
MikamiUitOpen 0:d310bb78455d 11 #define SD_WAV_READER_HPP
MikamiUitOpen 0:d310bb78455d 12
MikamiUitOpen 0:d310bb78455d 13 #include "SDFileSystem.h"
MikamiUitOpen 0:d310bb78455d 14 #include "BlinkLabel.hpp"
MikamiUitOpen 0:d310bb78455d 15 #include "Array.hpp"
MikamiUitOpen 0:d310bb78455d 16 #include <string>
MikamiUitOpen 0:d310bb78455d 17
MikamiUitOpen 0:d310bb78455d 18 namespace Mikami
MikamiUitOpen 0:d310bb78455d 19 {
MikamiUitOpen 0:d310bb78455d 20 class SD_WavReader
MikamiUitOpen 0:d310bb78455d 21 {
MikamiUitOpen 0:d310bb78455d 22 public:
MikamiUitOpen 0:d310bb78455d 23 SD_WavReader(int32_t bufferSize);
MikamiUitOpen 0:d310bb78455d 24 virtual ~SD_WavReader();
MikamiUitOpen 0:d310bb78455d 25
MikamiUitOpen 0:d310bb78455d 26 void Open(const string fileName);
MikamiUitOpen 0:d310bb78455d 27
MikamiUitOpen 0:d310bb78455d 28 void Close() { fclose(fp_); }
MikamiUitOpen 0:d310bb78455d 29
MikamiUitOpen 0:d310bb78455d 30 // ファイルのヘッダ読み込み
MikamiUitOpen 0:d310bb78455d 31 bool IsWavFile();
MikamiUitOpen 0:d310bb78455d 32
MikamiUitOpen 0:d310bb78455d 33 // ファイルからステレオデータの取得
MikamiUitOpen 0:d310bb78455d 34 void ReadStereo(Array<int16_t>& dataL, Array<int16_t>& dataR);
MikamiUitOpen 0:d310bb78455d 35
MikamiUitOpen 0:d310bb78455d 36 // ファイルからデータをモノラルに変換しての取得
MikamiUitOpen 0:d310bb78455d 37 void ReadAndToMono(Array<int16_t>& data);
MikamiUitOpen 0:d310bb78455d 38
MikamiUitOpen 0:d310bb78455d 39 // データサイズ（標本化点の数）の取得
MikamiUitOpen 0:d310bb78455d 40 int32_t GetSize();
MikamiUitOpen 0:d310bb78455d 41
MikamiUitOpen 0:d310bb78455d 42 private:
MikamiUitOpen 0:d310bb78455d 43 const string STR_;
MikamiUitOpen 0:d310bb78455d 44
MikamiUitOpen 0:d310bb78455d 45 struct WaveFormatEx
MikamiUitOpen 0:d310bb78455d 46 {
MikamiUitOpen 0:d310bb78455d 47 uint16_t wFormatTag; // 1: PCM
MikamiUitOpen 0:d310bb78455d 48 uint16_t nChannels; // 1：モノラル，2: ステレオ
MikamiUitOpen 0:d310bb78455d 49 uint32_t nSamplesPerSec; // 標本化周波数 (Hz)
MikamiUitOpen 0:d310bb78455d 50 uint32_t nAvgBytesPerSec; // 転送速度 (bytes/s)
MikamiUitOpen 0:d310bb78455d 51 uint16_t nBlockAlign; // 4: 16ビットステレオの場合
MikamiUitOpen 0:d310bb78455d 52 uint16_t wBitsPerSample; // データのビット数，8 または 16
MikamiUitOpen 0:d310bb78455d 53 uint16_t cbSize; // PCM の場合使わない
MikamiUitOpen 0:d310bb78455d 54 };
MikamiUitOpen 0:d310bb78455d 55
MikamiUitOpen 0:d310bb78455d 56 SDFileSystem *sd_;
MikamiUitOpen 0:d310bb78455d 57 FILE *fp_;
MikamiUitOpen 0:d310bb78455d 58
MikamiUitOpen 0:d310bb78455d 59 bool ok_;
MikamiUitOpen 0:d310bb78455d 60 int32_t size_; // データサイズ（標本化点の数）
MikamiUitOpen 11:c33c711a5712 61 Array<int16_t> buffer; // 作業領域
MikamiUitOpen 0:d310bb78455d 62
MikamiUitOpen 0:d310bb78455d 63 void ErrorMsg(char msg[])
MikamiUitOpen 0:d310bb78455d 64 { BlinkLabel errLabel(240, 100, msg, Label::CENTER); }
MikamiUitOpen 0:d310bb78455d 65
MikamiUitOpen 2:511479736d6e 66 // コピー･コンストラクタとオブジェクトの代入演算子は使用禁止
MikamiUitOpen 0:d310bb78455d 67 SD_WavReader(const SD_WavReader&);
MikamiUitOpen 0:d310bb78455d 68 SD_WavReader& operator=(const SD_WavReader&);
MikamiUitOpen 0:d310bb78455d 69 };
MikamiUitOpen 0:d310bb78455d 70 }
MikamiUitOpen 0:d310bb78455d 71 #endif // SD_BINARY_READER_HPP