SPKT
Dependencies: SDFileSystem_Warning_Fixed
Dependents: DISCO-F746_WAV_PLAYER WAV
SD_WavReader.hpp@16:299cc1052baa, 2017-03-22 (annotated)
- Committer:
- MikamiUitOpen
- Date:
- Wed Mar 22 09:20:13 2017 +0000
- Revision:
- 16:299cc1052baa
- Parent:
- 11:c33c711a5712
- Child:
- 18:6631cd0fbbcd
17
Who changed what in which revision?
User | Revision | Line number | New 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 | 16:299cc1052baa | 7 | // 2017/03/22, 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 | 16:299cc1052baa | 13 | #include "stm32746g_discovery_audio.h" |
MikamiUitOpen | 0:d310bb78455d | 14 | #include "SDFileSystem.h" |
MikamiUitOpen | 0:d310bb78455d | 15 | #include "BlinkLabel.hpp" |
MikamiUitOpen | 0:d310bb78455d | 16 | #include "Array.hpp" |
MikamiUitOpen | 0:d310bb78455d | 17 | #include <string> |
MikamiUitOpen | 0:d310bb78455d | 18 | |
MikamiUitOpen | 0:d310bb78455d | 19 | namespace Mikami |
MikamiUitOpen | 0:d310bb78455d | 20 | { |
MikamiUitOpen | 0:d310bb78455d | 21 | class SD_WavReader |
MikamiUitOpen | 0:d310bb78455d | 22 | { |
MikamiUitOpen | 0:d310bb78455d | 23 | public: |
MikamiUitOpen | 0:d310bb78455d | 24 | SD_WavReader(int32_t bufferSize); |
MikamiUitOpen | 0:d310bb78455d | 25 | virtual ~SD_WavReader(); |
MikamiUitOpen | 0:d310bb78455d | 26 | |
MikamiUitOpen | 0:d310bb78455d | 27 | void Open(const string fileName); |
MikamiUitOpen | 0:d310bb78455d | 28 | |
MikamiUitOpen | 0:d310bb78455d | 29 | void Close() { fclose(fp_); } |
MikamiUitOpen | 0:d310bb78455d | 30 | |
MikamiUitOpen | 0:d310bb78455d | 31 | // ファイルのヘッダ読み込み |
MikamiUitOpen | 0:d310bb78455d | 32 | bool IsWavFile(); |
MikamiUitOpen | 0:d310bb78455d | 33 | |
MikamiUitOpen | 0:d310bb78455d | 34 | // ファイルからステレオデータの取得 |
MikamiUitOpen | 0:d310bb78455d | 35 | void ReadStereo(Array<int16_t>& dataL, Array<int16_t>& dataR); |
MikamiUitOpen | 0:d310bb78455d | 36 | |
MikamiUitOpen | 0:d310bb78455d | 37 | // 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 | 38 | void ReadAndToMono(Array<int16_t>& data); |
MikamiUitOpen | 0:d310bb78455d | 39 | |
MikamiUitOpen | 0:d310bb78455d | 40 | // データサイズ(標本化点の数)の取得 |
MikamiUitOpen | 0:d310bb78455d | 41 | int32_t GetSize(); |
MikamiUitOpen | 0:d310bb78455d | 42 | |
MikamiUitOpen | 0:d310bb78455d | 43 | private: |
MikamiUitOpen | 0:d310bb78455d | 44 | const string STR_; |
MikamiUitOpen | 0:d310bb78455d | 45 | |
MikamiUitOpen | 0:d310bb78455d | 46 | struct WaveFormatEx |
MikamiUitOpen | 0:d310bb78455d | 47 | { |
MikamiUitOpen | 0:d310bb78455d | 48 | uint16_t wFormatTag; // 1: PCM |
MikamiUitOpen | 0:d310bb78455d | 49 | uint16_t nChannels; // 1:モノラル,2: ステレオ |
MikamiUitOpen | 0:d310bb78455d | 50 | uint32_t nSamplesPerSec; // 標本化周波数 (Hz) |
MikamiUitOpen | 0:d310bb78455d | 51 | uint32_t nAvgBytesPerSec; // 転送速度 (bytes/s) |
MikamiUitOpen | 0:d310bb78455d | 52 | uint16_t nBlockAlign; // 4: 16ビットステレオの場合 |
MikamiUitOpen | 0:d310bb78455d | 53 | uint16_t wBitsPerSample; // データのビット数,8 または 16 |
MikamiUitOpen | 0:d310bb78455d | 54 | uint16_t cbSize; // PCM の場合使わない |
MikamiUitOpen | 0:d310bb78455d | 55 | }; |
MikamiUitOpen | 0:d310bb78455d | 56 | |
MikamiUitOpen | 0:d310bb78455d | 57 | SDFileSystem *sd_; |
MikamiUitOpen | 0:d310bb78455d | 58 | FILE *fp_; |
MikamiUitOpen | 0:d310bb78455d | 59 | |
MikamiUitOpen | 0:d310bb78455d | 60 | bool ok_; |
MikamiUitOpen | 0:d310bb78455d | 61 | int32_t size_; // データサイズ(標本化点の数) |
MikamiUitOpen | 11:c33c711a5712 | 62 | Array<int16_t> buffer; // 作業領域 |
MikamiUitOpen | 0:d310bb78455d | 63 | |
MikamiUitOpen | 0:d310bb78455d | 64 | void ErrorMsg(char msg[]) |
MikamiUitOpen | 0:d310bb78455d | 65 | { BlinkLabel errLabel(240, 100, msg, Label::CENTER); } |
MikamiUitOpen | 0:d310bb78455d | 66 | |
MikamiUitOpen | 2:511479736d6e | 67 | // 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 | 68 | SD_WavReader(const SD_WavReader&); |
MikamiUitOpen | 0:d310bb78455d | 69 | SD_WavReader& operator=(const SD_WavReader&); |
MikamiUitOpen | 0:d310bb78455d | 70 | }; |
MikamiUitOpen | 0:d310bb78455d | 71 | } |
MikamiUitOpen | 0:d310bb78455d | 72 | #endif // SD_BINARY_READER_HPP |