nguyen nam / SD_PlayerSkeleton

SPKT

Dependencies:   SDFileSystem_Warning_Fixed

SD_WavReader.hpp@20:84ca69a520f9, 2019-06-07 (annotated)

Committer:
phungductung
Date:
Fri Jun 07 05:39:43 2019 +0000
Revision:
20:84ca69a520f9
Parent:
18:6631cd0fbbcd 
12

Who changed what in which revision?

UserRevisionLine numberNew contents of line
phungductung 18:6631cd0fbbcd 1
MikamiUitOpen 0:d310bb78455d 2 //--------------------------------------------------------------
MikamiUitOpen 0:d310bb78455d 3
MikamiUitOpen 0:d310bb78455d 4 #ifndef SD_WAV_READER_HPP
MikamiUitOpen 0:d310bb78455d 5 #define SD_WAV_READER_HPP
MikamiUitOpen 0:d310bb78455d 6
MikamiUitOpen 16:299cc1052baa 7 #include "stm32746g_discovery_audio.h"
MikamiUitOpen 0:d310bb78455d 8 #include "SDFileSystem.h"
MikamiUitOpen 0:d310bb78455d 9 #include "BlinkLabel.hpp"
MikamiUitOpen 0:d310bb78455d 10 #include "Array.hpp"
MikamiUitOpen 0:d310bb78455d 11 #include <string>
MikamiUitOpen 0:d310bb78455d 12
MikamiUitOpen 0:d310bb78455d 13 namespace Mikami
MikamiUitOpen 0:d310bb78455d 14 {
MikamiUitOpen 0:d310bb78455d 15 class SD_WavReader
MikamiUitOpen 0:d310bb78455d 16 {
MikamiUitOpen 0:d310bb78455d 17 public:
MikamiUitOpen 0:d310bb78455d 18 SD_WavReader(int32_t bufferSize);
MikamiUitOpen 0:d310bb78455d 19 virtual ~SD_WavReader();
MikamiUitOpen 0:d310bb78455d 20
MikamiUitOpen 0:d310bb78455d 21 void Open(const string fileName);
MikamiUitOpen 0:d310bb78455d 22
MikamiUitOpen 0:d310bb78455d 23 void Close() { fclose(fp_); }
MikamiUitOpen 0:d310bb78455d 24
phungductung 18:6631cd0fbbcd 25 // Đọc tiêu đề của tệp
MikamiUitOpen 0:d310bb78455d 26 bool IsWavFile();
MikamiUitOpen 0:d310bb78455d 27
phungductung 18:6631cd0fbbcd 28 // Nhận dữ liệu âm thanh nổi từ tệp
MikamiUitOpen 0:d310bb78455d 29 void ReadStereo(Array<int16_t>& dataL, Array<int16_t>& dataR);
MikamiUitOpen 0:d310bb78455d 30
phungductung 18:6631cd0fbbcd 31 // Chuyển đổi dữ liệu từ tệp thành đơn âm
MikamiUitOpen 0:d310bb78455d 32 void ReadAndToMono(Array<int16_t>& data);
MikamiUitOpen 0:d310bb78455d 33
phungductung 18:6631cd0fbbcd 34 // Lấy kích thước dữ liệu (số điểm lấy mẫu)
MikamiUitOpen 0:d310bb78455d 35 int32_t GetSize();
MikamiUitOpen 0:d310bb78455d 36
MikamiUitOpen 0:d310bb78455d 37 private:
MikamiUitOpen 0:d310bb78455d 38 const string STR_;
MikamiUitOpen 0:d310bb78455d 39
MikamiUitOpen 0:d310bb78455d 40 struct WaveFormatEx
MikamiUitOpen 0:d310bb78455d 41 {
MikamiUitOpen 0:d310bb78455d 42 uint16_t wFormatTag; // 1: PCM
phungductung 18:6631cd0fbbcd 43 uint16_t nChannels; // 1: 1: đơn âm, 2: âm thanh nổi
phungductung 18:6631cd0fbbcd 44 uint32_t nSamplesPerSec; // Tần số lấy mẫu (Hz)
phungductung 18:6631cd0fbbcd 45 uint32_t nAvgBytesPerSec; // Tốc độ truyền (byte / s)
phungductung 18:6631cd0fbbcd 46 uint16_t nBlockAlign; // 4: Trong trường hợp âm thanh nổi 16 bit
phungductung 18:6631cd0fbbcd 47 uint16_t wBitsPerSample; // Số bit dữ liệu, 8 hoặc 16
phungductung 18:6631cd0fbbcd 48 uint16_t cbSize; // Không được sử dụng cho PCM
MikamiUitOpen 0:d310bb78455d 49 };
MikamiUitOpen 0:d310bb78455d 50
MikamiUitOpen 0:d310bb78455d 51 SDFileSystem *sd_;
MikamiUitOpen 0:d310bb78455d 52 FILE *fp_;
MikamiUitOpen 0:d310bb78455d 53
MikamiUitOpen 0:d310bb78455d 54 bool ok_;
phungductung 18:6631cd0fbbcd 55 int32_t size_; // Kích thước dữ liệu (số điểm lấy mẫu)
phungductung 18:6631cd0fbbcd 56 Array<int16_t> buffer; // Khu vực làm việc
MikamiUitOpen 0:d310bb78455d 57
MikamiUitOpen 0:d310bb78455d 58 void ErrorMsg(char msg[])
MikamiUitOpen 0:d310bb78455d 59 { BlinkLabel errLabel(240, 100, msg, Label::CENTER); }
phungductung 18:6631cd0fbbcd 60 // Không sử dụng hàm tạo sao chép và toán tử gán đối tượng
MikamiUitOpen 0:d310bb78455d 61 SD_WavReader(const SD_WavReader&);
MikamiUitOpen 0:d310bb78455d 62 SD_WavReader& operator=(const SD_WavReader&);
MikamiUitOpen 0:d310bb78455d 63 };
MikamiUitOpen 0:d310bb78455d 64 }
MikamiUitOpen 0:d310bb78455d 65 #endif // SD_BINARY_READER_HPP