File content as of revision 1:1e9ab332e036:

//--------------------------------------------------------------------
#include "VolumeCtrl.hpp"
#include "FileSelectorWav.hpp"
#include "SD_PlayerSkeleton.hpp"
#include "SD_WavReader.hpp"

using namespace Mikami;

int main()
{
    VolumeCtrl myPlayer("Music Player");
    myPlayer.Execute();
    
}
//-------------------------------------------------
//Chuong trình con di?u ch?nh biên d? âm thanh

namespace Mikami
{
   // Th?c thi x? lý tín hi?u cho m?t kh?i
    void VolumeCtrl::SignalProcessing()
    {
        // Ð?c giá tr? d? li?u âm thanh n?i c?a m?t kh?i t? SD và bi?n nó thành don âm
        sdReader_.ReadAndToMono(sn_);

        while (!mySai_.IsXferred()) {}  // Ch? cho d?n khi truy?n d? li?u hoàn t?t

        for (int n=0; n<BUFF_SIZE_; n++)
        {
            int16_t data = volume_*sn_[n];  //Thay d?i âm lu?ng d?u ra
            mySai_.Output(data, data);
        }
        //--------------------------------------------------------------
    }

    // Ði?u ch?nh âm lu?ng
    void VolumeCtrl::Modefy()
    {
        if (myBar_.Slide())
            volume_ = myBar_.GetValue();
    }
// Hi?n th? khi phát m?t bài hát
    void VolumeCtrl::Display()
    {
        Label musicTitle(207, 80, GetFileNameNoExt(), Label::CENTER, Font16);
        ctrl_.Draw();
        myBar_.Redraw();
    }
}
//--------------------------------------------------------------
namespace Mikami
{
    FileSelector::FileSelector(uint8_t x0, uint8_t y0, int maxFiles,
                               int maxNameLength, SD_WavReader &reader)
        : X_(x0), Y_(y0),
          MAX_FILES_(maxFiles), MAX_NAME_LENGTH_(maxNameLength),
          fileNames_(maxFiles), fileNameLabels_(MAX_LIST_PAGE_),
          next_(50, 238, 64, 36, 2, (string[]){"<", ">"}, 10, 0, 2, -1, Font24),
          pageLabel_(210, 250, Label::LEFT, Font16),
          lcd_(GuiBase::GetLcd()), sdReader_(reader), page_(1),
          nOld_(-1), kOld_(-1)
    {
        Array<string> nonString(MAX_LIST_PAGE_, "");
        rect_ = new ButtonGroup(X_, Y_, W_H_, W_H_, MAX_LIST_PAGE_,
                                nonString, 0, V_L_-W_H_, 1,
                                -1, Font12, 0, GuiBase::ENUM_BACK,
                                BASE_COLOR_, TOUCHED_COLOR_);
        rect_->EraseAll();
        next_.EraseAll();

        // T?o Label 
        for (int n=0; n<MAX_LIST_PAGE_; n++)
            fileNameLabels_[n] = new Label(X_+30, Y_+5+V_L_*n, "",
                                           Label::LEFT, Font16, BASE_COLOR_);
    }

    FileSelector::~FileSelector()
    {   
        delete rect_;
        for (int n=0; n<MAX_LIST_PAGE_; n++) delete fileNameLabels_[n];
    }

   // L?p danh sách các t?p tin. Tr? v? false n?u t?p WAV không t?n t?i
    bool FileSelector::CreateTable()
    {
        DIR* dp = opendir("/sd");
        fileCount_ = 0; 
        if (dp != NULL)
        {
            dirent* entry;
            for (int n=0; n<256; n++)
            {
                entry = readdir(dp);
                if (entry == NULL) break;

                string strName = entry->d_name;
                if ( (strName.find(".wav") != string::npos) ||
                     (strName.find(".WAV") != string::npos) )
                {
                    sdReader_.Open(strName);      // m? t?p tin

                    // Lo?i tr? các t?p không ph?i PCM, âm thanh n?i 16 bit, t?n s? l?y m?u 44,1 kHz
                    if (sdReader_.IsWavFile())
                        fileNames_[fileCount_++] = strName;
                    sdReader_.Close();
                }
                if (fileCount_ >= MAX_FILES_) break;
            }
            closedir(dp);
        }
        else
            return false;                   // n?u th? SD không du?c cài d?t
        if (fileCount_ == 0) return false;  //N?u t?p WAV tuong ?ng không t?n t?i

        div_t m = div(fileCount_, MAX_LIST_PAGE_);
        maxPage_ = (m.rem == 0) ? m.quot : m.quot+1;
        return true;                        //Khi t?p WAV tuong ?ng t?n t?i
    }

   // ch?n t?p tin
    bool FileSelector::Select(string &fileName)
    {
        int m;
        if (next_.GetTouchedNumber(m))
        {
            if (m==0) page_--;
            else      page_++;
            DisplayFileList(false);
            nOld_ = -1;
            wait_ms(300);
        }
        
        int n;
        if (rect_->GetTouchedNumber(n))
        {
            int k = (page_ - 1)*MAX_LIST_PAGE_ + n;
            fileNameLabels_[n]->Draw(GetFileNameNoExt(k),
                                     TOUCHED_COLOR_);
            fileName = fileNames_[k];
          // Tr? v? màu c?a tên t?p dã ch?n tru?c dó trên cùng m?t trang
            if (nOld_ != -1)
                fileNameLabels_[nOld_]->Draw(GetFileNameNoExt(kOld_),
                                             BASE_COLOR_);
            if (page_ == maxPage_)      // xóa hình ch? nh?t ph? trên trang cu?i
                for (int j=fileCount_ % MAX_LIST_PAGE_ + 1;
                     j < MAX_LIST_PAGE_; j++) rect_->Erase(j);
            nOld_ = n;
            kOld_ = k;
            wait_ms(300);
            return true;
        }
        else
            return false;
    }

    // Hi?n th? danh sách các t?p tin
    void FileSelector::DisplayFileList(bool sortEnable)
    {
        if (sortEnable)
            std::sort((string *)fileNames_,
                      (string *)fileNames_+fileCount_); 
        
        Erase(X_, Y_, MAX_NAME_LENGTH_*((sFONT *)(&Font16))->Width, 272-Y_);

        div_t m = div(fileCount_, MAX_LIST_PAGE_);
        int count = (m.quot >= page_) ? MAX_LIST_PAGE_ : m.rem;
        for (int n=0; n<count; n++) rect_->Draw(n);
        for (int n=0; n<count; n++)
            fileNameLabels_[n]->Draw(GetFileNameNoExt(n+(page_-1)*MAX_LIST_PAGE_));
// Hi?n th? trang tru?c, nút ch?n trang ti?p theo, v.v.
        next_.InactivateAll();
        if (page_ > 1) next_.Activate(0);          // "<" h?p l?
        if (page_ < maxPage_) next_.Activate(1);   // ">" h?p l?
        char page[6];
        sprintf(page, "%d/%d", page_, maxPage_);
        pageLabel_.Draw(page);
    }

    // xóa danh sách các t?p tin
    void FileSelector::Erase(uint16_t x, uint16_t y, uint16_t width, uint16_t height,
                             uint32_t color)
    {
        lcd_.SetTextColor(color);
        lcd_.FillRect(x, y, width, height);
    }

   // L?y tên t?p v?i ph?n m? r?ng b? xóa
    string FileSelector::GetFileNameNoExt(int n)
    {
        string name = fileNames_[n];
        int k = name.rfind(".");
        if (k != string::npos)
            return name.erase(k);
        else
            return name;
    }
}
//--------------------------------------------------------------
//chuong trình hi?n th? giao di?n & di?u khi?n

namespace Mikami
{
    SD_PlayerSkeleton::SD_PlayerSkeleton(string str, bool resetButton)
        : BUFF_SIZE_(2048), sn_(BUFF_SIZE_),
          mySai_(SaiIO::OUTPUT, BUFF_SIZE_, AUDIO_FREQUENCY_44K),
          sdReader_(BUFF_SIZE_),
          fileName_(""),
          title_(214, 4, str, Label::CENTER, Font16),
          selector_(0, 22, 256, 37, sdReader_),
          menu_(BG_LEFT_, 2, BG_WIDTH_, BG_HEIGHT_, 5,
                (string[]){"SELECT", "PLAY", "PAUSE", "RESUME", "STOP"},
                0, 2, 1)
    {
        menu_.InactivateAll();
        menu_.Activate(0);

        if (!selector_.CreateTable())
            BlinkLabel errLabel(240, 100, "SD CARD ERROR", Label::CENTER);

        if (resetButton) reset_ = new ResetButton();
        else             reset_ = NULL;
    }

   // th?c thi x? lý trình phát SD
    void SD_PlayerSkeleton::Execute()
    {
        bool playOk = false;
        int32_t loopCount;

        while (true)
        {
            if (playOk)             // Trong tru?ng h?p PLAY sau PAUSE
                loopCount = SD_Open();
            else                    // N?u không PLAY sau PAUSE
            {
                if (0 == WaitTouched()) SelectFile();
                loopCount = SD_Open();
                while (1 != WaitTouched()) {}   // Ð?i cho d?n khi PLAY du?c ch?m
            }

            Display();  // X? lý hi?n th? dành riêng cho ?ng d?ng (ch?c nang ?o)
            if (reset_ != NULL) reset_->Draw();

            menu_.Inactivate(0);    // SELECT b? vô hi?u hóa
            menu_.Activate(2);      // PAUSE b? vô hi?u hóa
            menu_.Activate(4);      // STOP b? vô hi?u hóa

            playOk = false;
            bool stopOk = false;

            Clear();   // Quá trình xóa ?ng d?ng c? th? (ch?c nang ?o)

            mySai_.PlayOut();       // Play

            // L?p l?i cho d?n khi h?t d? li?u t?p
            for (int k=0; k<loopCount; k++)
            {
                int touch42 = -1;
                menu_.GetTouchedNumber(touch42);
                if (touch42 == 4) break;    // STOP
                if (touch42 == 2)           // PAUSE X? lý khi ch?m vào nút
                {
                    menu_.Inactivate(2);    // PAUSE Nút không h?p l?
                    menu_.Activate(3);      // RESUME Ðã b?t nút
                    mySai_.PauseOut();

                    // PLAY Ð?i cho d?n khi 'RESUME' ho?c 'STOP' du?c ch?m vào
                    switch (WaitTouched())
                    {
                        case 1: playOk = true;      // PLAY t? d?u
                                break;
                        case 3: mySai_.ResumeOut(); // Ti?p t?c PLAY t? di?m PAUSE
                                menu_.Activate(2);
                                menu_.Inactivate(3);
                                menu_.TouchedColor(1);
                                break;
                        case 4: stopOk = true;      // STOP
                                break;
                    }
                }
                if (playOk || stopOk) break;

                DoIfHandled();
               // X? lý tín hi?u cho m?t kh?i dành riêng cho ?ng d?ng (hàm ?o thu?n túy)
                SignalProcessing();
            }
            mySai_.StopOut();
            if (!playOk) menu_.Activate(0); // SELECT h?p l?
            menu_.Draw(1);                  // Kh?i t?o màu c?a nút PLAY
            for (int n=2; n<5; n++)         // Các nút khác b? vô hi?u hóa
                menu_.Inactivate(n);

            sdReader_.Close();   // Ðóng t?p SD
        }
    }

    // L?y tên t?p dã ch?n mà không c?n ph?n m? r?ng
    string SD_PlayerSkeleton::GetFileNameNoExt()
    {
        string fName = fileName_;
        int k = fName.rfind(".");
        if (k != string::npos)
            return fName.erase(k);
        else
            return fName;
    }

    // M? t?p th? SD
    int32_t SD_PlayerSkeleton::SD_Open()
    {
        if (fileName_.empty()) SelectFile();
        sdReader_.Open(fileName_);
        sdReader_.IsWavFile();
        return sdReader_.GetSize()/BUFF_SIZE_;
    }

    // L?a ch?n t?p tin
    void SD_PlayerSkeleton::SelectFile()
    {
        selector_.DisplayFileList();
        title_.Draw("Select file");
        menu_.Inactivate(0);        // SELECT vô hi?u hóa
        menu_.Inactivate(1);        // PLAY vô hi?u hóa
        do
            if (selector_.Select(fileName_))
                menu_.Activate(1);  // PLAY dã b?t
        while (!menu_.Touched(1));  // PLAY L?p l?i cho d?n khi nút du?c ch?m

        selector_.Erase(0, 0, BG_LEFT_-4, 272);
        title_.Draw();
    }

    // X? lý khi b?ng di?u khi?n du?c v?n hành
    void SD_PlayerSkeleton::DoIfHandled()
    {
        if (reset_ != NULL) reset_->DoIfTouched();
        Modefy();   // ?ng d?ng thay d?i tham s? c? th? (ch?c nang ?o)
    }

    //Ð?i trong khi th?c hi?n Do IfHandled () cho d?n khi b?t k? nút nào trên menu du?c ch?m vào
    int SD_PlayerSkeleton::WaitTouched()
    {
        int touchNum;
        while (!menu_.GetTouchedNumber(touchNum)) DoIfHandled();
        return touchNum;
    }
}
//-------------------------------------------------
//chuong trình con d?c file WAV-PCM-16bit-44.1KHz

namespace Mikami
{
    SD_WavReader::SD_WavReader(int32_t bufferSize)
        : STR_("sd"), ok_(false)
    {
        sd_ = new SDFileSystem(STR_.c_str());
        sd_->mount();      
        buffer.SetSize(bufferSize*2);
    }

    SD_WavReader::~SD_WavReader()
    {
        sd_->unmount();
        delete sd_;
    }
    
    void SD_WavReader::Open(const string fileName)
    {
        string name = (string)"/" + STR_ + "/" + fileName;
        fp_ = fopen(name.c_str(), "rb");
        if (fp_ == NULL) ErrorMsg("Loi The SD!!!");
    }
    
    
    // Ð?c m?t ph?n c?a tiêu d? t?p "RIFFxxxxWAVEfmt"
    // Giá tr? tr? v?: true n?u âm thanh n?i 16 bit, t?n s? l?y m?u là 44,1 kHz
    bool SD_WavReader::IsWavFile()
    {
        char data[17];
        fread(data, 1, 16, fp_);    // Ð?c 16 byte
        string strRead = "";
        for (int n=0; n<4; n++) strRead += data[n];
        // Không ki?m tra 4 ký t? gi?a 
        for (int n=8; n<16; n++) strRead += data[n];

        // Ki?m tra xem "RIFF", "WAVE", "fmt" có t?n t?i không
        if (strRead != "RIFFWAVEfmt ") return false;

        // có du?c kích thu?c c?a fmt chunck
        uint32_t fmtChunkSize;
        fread(&fmtChunkSize, sizeof(uint32_t), 1, fp_);

        // Xác nh?n r?ng dó là PCM, Stereo, 44.1 kHz, 16 bit
        WaveFormatEx fmtData;
        fread(&fmtData, fmtChunkSize, 1, fp_);
        if ((fmtData.wFormatTag     != 1)   ||
            (fmtData.nChannels      != 2)   ||
            (fmtData.nSamplesPerSec != AUDIO_FREQUENCY_44K) ||
            (fmtData.wBitsPerSample != 16)
           ) return false;

        // Tìm d? li?u
        char dataId[5];
        dataId[4] = 0;
        fread(dataId, 1, 4, fp_);
        if ("data" != (string)dataId)
            for (int n=0; n<100; n++)
            {
                char oneByte;
                fread(&oneByte, 1, 1, fp_);
                for (int k=0; k<3; k++)
                    dataId[k] = dataId[k+1];
                dataId[3] = oneByte;
                if ("data" == (string)dataId) break;
                
                if (n == 99) return false;
            }

        // Nh?n kích thu?c d? li?u (byte)
        int32_t sizeByte;
        fread(&sizeByte, sizeof(int32_t), 1, fp_);
        size_ = sizeByte/4;

        ok_ = true;
        return true;
    }

    // Nh?n d? li?u âm thanh n?i t? t?p tin
    void SD_WavReader::ReadStereo(Array<int16_t>& dataL,
                                  Array<int16_t>& dataR)
    {
        if (!ok_) ErrorMsg("Get data FAILED");
        uint32_t size = dataL.Length();
        fread(buffer, sizeof(int16_t), size*2, fp_);       
        for (int n=0; n<size; n++)
        {
            dataL[n] = buffer[2*n];
            dataR[n] = buffer[2*n+1];
        }
    }

    // Chuy?n d?i d? li?u t? t?p tin sang don âm
    void SD_WavReader::ReadAndToMono(Array<int16_t>& data)
    {
        if (!ok_) ErrorMsg("Get data FAILED");
        uint32_t size = data.Length();
        fread(buffer, sizeof(int16_t), size*2, fp_);
        for (int n=0; n<size; n++)
            data[n] = (buffer[2*n] + buffer[2*n+1])/2;
    }        
    
    // Thu th?p kích thu?c d? li?u (s? di?m l?y m?u)
    int32_t SD_WavReader::GetSize()
    {
        if (!ok_) ErrorMsg("Get data size FAILED");
        return size_;
    }
}